CN114422889A

CN114422889A - Self-adaptive volume adjusting device and method for vehicle-mounted sound equipment

Info

Publication number: CN114422889A
Application number: CN202210245580.5A
Authority: CN
Inventors: 何锦樱; 卢桂林
Original assignee: Taiwan Yu Electronics Shenzhen Co ltd
Current assignee: Jiashuo Electronics Shenzhen Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-04-29
Anticipated expiration: 2042-03-14
Also published as: CN114422889B

Abstract

The invention relates to the technical field of vehicle-mounted sound equipment, and discloses a self-adaptive volume adjusting device and an adjusting method of the vehicle-mounted sound equipment, wherein the self-adaptive volume adjusting device comprises a sound equipment mechanism, an inner sound sensor is arranged on one side of the sound equipment mechanism, an outer sound sensor is arranged on the other side of the sound equipment mechanism, a control module is fixedly connected to one side of the top end of the sound equipment mechanism, and a lifting mechanism is fixedly connected to the other side of the top end of the sound equipment mechanism; the intelligent car interior sound control system is provided with the sound mechanism, the inner sound sensor, the outer sound sensor and the control module, so that the sound volume of the sound mechanism can be intelligently adjusted, when the outer sound sensor detects that the external environment is noisy, the sound of the sound mechanism is automatically increased, the sound emitted by the sound mechanism can be clearly heard by people in a car, when the inner sound sensor detects that the people in the car are chatting, the sound of the sound mechanism is automatically decreased, the people in the car can conveniently communicate and exchange, and the intelligent car interior sound control system is more intelligent and more convenient to use.

Description

Self-adaptive volume adjusting device and method for vehicle-mounted sound equipment

Technical Field

The invention relates to the technical field of vehicle-mounted sound, in particular to a vehicle-mounted sound self-adaptive volume adjusting device and method.

Background

The vehicle-mounted sound equipment is a sound system installed in a vehicle, the system can be called as sound equipment, the most basic condition is that the sound equipment has a function of playing back sound, the interference prevention technology is that a choke coil is used for filtering interference of a power line between a power supply and the sound equipment respectively so as to reduce external noise interference, and the vehicle-mounted sound equipment has an essential function of playing music and prompting navigation.

Present vehicle audio when using, after the volume is good selected, will keep same volume to carry out the music broadcast, and when the sound of car outer is comparatively noisy, the circumstances that the broadcast content can appear and hear not clearly, and when the people in the car speaks, when the sound that vehicle audio broadcast is great, can influence people's interactive flow in the car again, stereo set in the car is when using, the dust can be fallen into the dust screen in the unavoidable, can also influence the sound of stereo set when serious, only can only open the car and carry out the dust clearance to the place of maintenance now, the expense is higher, and when stereo set sound was adjusted, can appear one big and the less circumstances of one lower check of sound pitch.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a vehicle-mounted sound self-adaptive volume adjusting device and an adjusting method, and the technical problem to be solved by the invention is as follows: the sound of the vehicle-mounted sound box can not be automatically adjusted, and the dust screen of the vehicle-mounted sound box easily blocks dust.

The utility model provides a vehicle-mounted sound self-adaptation volume adjustment device and regulation method, includes the stereo set mechanism, one side of stereo set mechanism is equipped with interior sound sensor, the opposite side of stereo set mechanism is equipped with outer sound sensor, one side fixedly connected with control module on stereo set mechanism top, the opposite side fixedly connected with elevating system on stereo set mechanism top, the middle part fixedly connected with chucking mechanism on stereo set mechanism top, elevating system's top fixedly connected with mechanism that admits air, the stereo set mechanism includes the audio amplifier shell, the mounting groove has been seted up to the side of audio amplifier shell, fixedly connected with dust screen in the mounting groove of audio amplifier shell, the inside fixedly connected with speaker of audio amplifier shell.

Further, interior sound sensor keeps operating condition with outer sound sensor simultaneously, interior sound sensor's priority is higher than outer sound sensor, interior sound sensor during operation, interior sound sensor detects when speaking the interval and is less than five seconds, and automatic with the speaker sound turn down, when outer sound sensor detected external sound and exceeded eighty decibels, the sound of automatic loudspeaker of increaseing, interior sound sensor adjusts with outer sound sensor's detection numerical value accessible control module, interior sound sensor's priority is higher than outer sound sensor, can avoid when external sound is great, and when the people in the car were exchanging, the dust screen was automatic to be increaseed the sound and is led to the fact the influence to people's exchange, more has intelligent.

Furthermore, a sound insulation barrel is movably connected in the mounting groove of the sound box shell, the side surface of the sound insulation barrel is movably connected with the side surface of the dustproof net, the bottom end of the inner side of the sound insulation barrel is movably connected with an air ventilation block, the two sides of the bottom end in the sound insulation barrel are fixedly connected with limiting columns, the inner side of the air ventilation block is provided with a threaded hole, the threaded hole of the air ventilation block is internally threaded with a threaded rod, the bottom end of the sound insulation barrel is provided with a spacing hole, the threaded rod is positioned in the spacing hole of the sound insulation barrel and is movably connected with the sound insulation barrel, the top end of the threaded rod is fixedly connected with a moving motor, the top end of the moving motor is fixedly connected with a motor shell, the bottom end of the moving motor is fixedly connected with a mounting plate, the bottom end of the mounting plate is fixedly connected with the top end of the sound box shell, the two sides of the top end of the air ventilation block are provided with spacing holes, the limiting columns are positioned in the spacing hole of the air ventilation block, the diameter of the diameter ratio of spacing post is ventilated the piece and is kept away a millimeter more than the diameter in hole, spacing post is the rubber material to when making the diameter of spacing post be greater than the diameter that the piece of ventilating kept away a hole, spacing post self can be compressed, can drive sound-proof section of thick bamboo when the piece of ventilating reciprocates this moment and reciprocate, and the condition of mutual displacement can not appear.

Further, the top fixedly connected with intake pipe of piece ventilates, the intake pipe can stretch out and draw back, just when the piece ventilates is located the minimum, the intake pipe is in tensile state, the piece of ventilating is close to the inboard of dust screen and has seted up the ventilation groove, the piece of ventilating is close to the side of dust screen and has seted up the ventilation hole, the side that a sound insulation section of thick bamboo is close to the dust screen has seted up the ventilation hole, the intake pipe is scalable material, therefore no matter how the piece of ventilating removes, the intake pipe all can be steadily to supplying air in the piece of ventilating, guarantees going on smoothly of air supply work.

Further, the top fixedly connected with electro-magnet of audio amplifier shell, the side of electro-magnet is equipped with a spacing section of thick bamboo, the bottom of a spacing section of thick bamboo and the top fixed connection of audio amplifier shell, the inside swing joint of a spacing section of thick bamboo has the permanent magnet, the side fixedly connected with chucking piece of electro-magnet is kept away from to the permanent magnet, the top fixed connection of spacing post has spacing head, when the permanent magnet contacts with the electro-magnet, a millimeter's distance is left with the side of a sound insulation section of thick bamboo in the side of chucking piece, the chucking piece is hard material, and therefore when the restriction sound insulation section of thick bamboo of chucking piece removed, can not damage, and the chucking piece contacts with the sound insulation section of thick bamboo, and the power when the sound insulation section of thick bamboo removed can not cause the damage to the permanent magnet.

Furthermore, the top end of the air inlet pipe is fixedly connected with a conical cylinder, the side surface of the conical cylinder is fixedly connected with an installation cylinder, the side surface of the mounting cylinder is fixedly connected with the vehicle body, the top end of the mounting cylinder is fixedly connected with a motor plate, the top end of the motor plate is fixedly connected with a rotating motor, the bottom end of the rotating motor is fixedly connected with a rotating shaft, the bottom end of the rotating shaft is fixedly connected with a first gear, the side surface of the first gear is movably engaged with a second gear, the inner side of the second gear is fixedly connected with a fan shaft, the side surface of the fan shaft is fixedly connected with a rotating blade, the side surface of the rotating blade is provided with a vent hole, the conical cylinder is conical, the side surface of the conical cylinder with larger area is connected with the mounting cylinder, therefore, the wind blown out from the mounting cylinder can be accelerated when passing through the conical cylinder, and the cleaning effect of the dust screen is improved.

Further, the both sides swing joint of fan axle has the stabilizer plate, the top of stabilizer plate and the inside fixed connection of an installation section of thick bamboo, the spacing groove has been seted up at the inboard middle part of an installation section of thick bamboo, the spacing inslot swing joint of an installation section of thick bamboo has the spacing ring, the inboard and the rotating vane's of spacing ring side fixed connection, the side fixedly connected with filter of a toper section of thick bamboo is kept away from to an installation section of thick bamboo, the both sides of fan axle all are connected through the stabilizer plate to can guarantee that the fan axle is difficult for rocking when rotating, guarantee the stability of its during operation.

The invention has the technical effects and advantages that:

1. the intelligent car interior sound control system is provided with the sound mechanism, the inner sound sensor, the outer sound sensor and the control module, so that the volume of the sound mechanism can be intelligently adjusted, when the outer sound sensor detects that the external environment is noisy, the sound of the sound mechanism is automatically increased, people in a car can clearly hear the sound emitted by the sound mechanism, when the inner sound sensor detects that the people in the car are chatting, the sound of the sound mechanism is automatically reduced, the people in the car can conveniently communicate and exchange, and the intelligent car interior sound control system is more intelligent and more convenient to use;

2. the vehicle-mounted sound box is favorably cleaned by arranging the rotating blades, the air inlet pipe, the ventilation block and the threaded rod, when the vehicle-mounted sound box has more dust and influences the sound of the loudspeaker, the rotating blades can rotate, air can be sent into the ventilation block through the air inlet pipe by the rotation of the rotating blades and then sent into the dustproof net through the small hole in the side face of the ventilation block, so that the dust in the dustproof net is blown out, the threaded rod can drive the ventilation block to move, the ventilation block can be cleaned at different positions, the dustproof net is ensured to be cleaned completely, and the device can be prevented from being damaged due to the fact that the blown dust enters the interior by adopting a mode of blowing air from the interior to the exterior;

3. the sound-insulation device is provided with the threaded rod, the sound-insulation barrel, the limiting column and the ventilation block, so that the sound of the loudspeaker can be accurately adjusted, when the played sound is adjusted downwards to be smaller but not adjusted to be larger, the moving motor is started, the threaded rod is driven to rotate by the moving motor, the ventilation block is driven to move up and down by the rotation of the threaded rod, the ventilation block moves up and down by the limiting column to drive the sound-insulation barrel to move up and down, the side surface of the sound box shell can be plugged when the sound-insulation barrel moves up and down, and the sound transmitted from the loudspeaker can be reduced and can be accurately adjusted according to the gap between the sound-insulation barrel and the sound box shell.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded view of the acoustic mechanism of the present invention.

Fig. 3 is an internal schematic view of the lifting mechanism of the present invention.

Fig. 4 is a schematic view showing the internal structure of the soundproof tube of the present invention.

Fig. 5 is an exploded view of the chucking mechanism of the present invention.

Fig. 6 is an internal schematic view of the air intake mechanism of the present invention.

Fig. 7 is a schematic view of a rotor blade according to the present invention.

The reference signs are: 1. a sound mechanism; 101. a sound box housing; 102. a speaker; 103. a dust screen; 2. an internal sound sensor; 3. an external sound sensor; 4. a control module; 5. a lifting mechanism; 501. mounting a plate; 502. a threaded rod; 503. a sound-insulating tube; 504. a moving motor; 505. a motor housing; 506. a limiting column; 507. a limiting head; 508. a ventilation block; 6. an air intake mechanism; 601. an air inlet pipe; 602. a tapered barrel; 603. mounting the cylinder; 604. a motor plate; 605. rotating the motor; 606. a rotating shaft; 607. a first gear; 608. a second gear; 609. a fan shaft; 610. a rotor blade; 611. a stabilizing plate; 612. a limiting ring; 613. a filter plate; 7. a chucking mechanism; 701. an electromagnet; 702. a limiting cylinder; 703. a permanent magnet; 704. and a clamping block.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below with reference to the drawings of the present invention, and the configurations of the respective configurations described in the following embodiments are merely examples, and the adaptive volume adjusting device and the adjusting method for a car audio according to the present invention are not limited to the configurations described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

The invention provides a vehicle-mounted sound self-adaptive volume adjusting device and an adjusting method, and the device comprises a sound mechanism 1, wherein one side of the sound mechanism 1 is provided with an inner sound sensor 2, the other side of the sound mechanism 1 is provided with an outer sound sensor 3, one side of the top end of the sound mechanism 1 is fixedly connected with a control module 4, the other side of the top end of the sound mechanism 1 is fixedly connected with a lifting mechanism 5, the middle part of the top end of the sound mechanism 1 is fixedly connected with a clamping mechanism 7, the top end of the lifting mechanism 5 is fixedly connected with an air inlet mechanism 6, the sound mechanism 1 comprises a sound box shell 101, the side surface of the sound box shell 101 is provided with a mounting groove, a dust screen 103 is fixedly connected in the mounting groove of the sound box shell 101, and a loudspeaker 102 is fixedly connected in the sound box shell 101.

Referring to fig. 1, the inner sound sensor 2 and the outer sound sensor 3 are simultaneously kept in working states, the priority level of the inner sound sensor 2 is higher than that of the outer sound sensor 3, when the inner sound sensor 2 works, when the inner sound sensor 2 detects that the speaking interval is less than five seconds, the sound of the loudspeaker 102 is automatically turned down, when the outer sound sensor 3 detects that the external sound exceeds eighty decibels, the sound of the loudspeaker 102 is automatically turned up, the detection values of the inner sound sensor 2 and the outer sound sensor 3 can be adjusted through the control module 4, the sound inside and outside the vehicle can be detected in real time through the inner sound sensor 2 and the outer sound sensor 3, and therefore the control module 4 can collect the sound information inside and outside the vehicle, the sound size of the loudspeaker 102 can be adjusted in a self-adaptive manner, and a better riding environment is provided for people inside the vehicle.

Referring to fig. 2 and 3, a sound insulation cylinder 503 is movably connected in the mounting groove of the sound box housing 101, the side surface of the sound insulation cylinder 503 is movably connected with the side surface of the dust screen 103, the bottom end of the inner side of the sound insulation cylinder 503 is movably connected with an air vent 508, both sides of the bottom end of the inner side of the sound insulation cylinder 503 are fixedly connected with limit posts 506, the inner side of the air vent 508 is provided with a threaded hole, the threaded hole of the air vent 508 is connected with a threaded rod 502 in a threaded manner, the bottom end of the sound insulation cylinder 503 is provided with a position avoiding hole, the threaded rod 502 is positioned in the position avoiding hole of the sound insulation cylinder 503 and is movably connected with the sound insulation cylinder 503, the top end of the threaded rod 502 is fixedly connected with a moving motor 504, the top end of the moving motor 504 is fixedly connected with a motor housing 505, the bottom end of the moving motor 504 is fixedly connected with a mounting plate 501, the bottom end of the mounting plate 501 is fixedly connected with the top end of the sound box housing 101, both sides of the top end of the air vent 508 are provided with position avoiding holes, the limit posts 506 are positioned in the position avoiding hole of the air vent 508, the diameter of spacing post 506 is one millimeter greater than the diameter of the clearance hole of ventilating block 508, spacing post 506 is the rubber material, rotation through threaded rod 502 drives ventilating block 508 and reciprocates, ventilating block 508 reciprocates and drives sound insulation tube 503 and reciprocates, can adjust the inside space of speaker 102 when sound insulation tube 503 reciprocates, part of the sound of speaker 102 can be blockked by sound insulation tube 503, thereby can influence the size of the sound that speaker 102 spreads out, consequently, can carry out accurate and small adjustment to the sound size of speaker 102.

Referring to fig. 3 and 4, an air inlet pipe 601 is fixedly connected to the top end of the air inlet block 508, the air inlet pipe 601 can stretch and retract, and when the air inlet block 508 is located at the lowest point, the air inlet pipe 601 is in a stretching state, a ventilation groove is formed in the inner side, close to the dust screen 103, of the air inlet block 508, a ventilation hole is formed in the side, close to the dust screen 103, of the air outlet cylinder 503, ventilation holes are formed in the side, close to the dust screen 103, of the air inlet block 508 and the side, close to the sound outlet cylinder 503, of the air outlet block 508, therefore, air sent from the air inlet pipe 601 can be sent into the dust screen 103 through the air inlet block 508 and the sound outlet cylinder 503, cleaning of the dust screen 103 is completed, air blowing from the inside to the outside is achieved, and damage to internal equipment caused by dust can be prevented.

Referring to fig. 5, an electromagnet 701 is fixedly connected to the top end of the sound box housing 101, a limiting cylinder 702 is arranged on the side face of the electromagnet 701, the bottom end of the limiting cylinder 702 is fixedly connected to the top end of the sound box housing 101, a permanent magnet 703 is movably connected to the inside of the limiting cylinder 702, a clamping block 704 is fixedly connected to the side face of the permanent magnet 703 far away from the electromagnet 701, a limiting head 507 is fixedly connected to the top end of the limiting column 506, when the permanent magnet 703 is in contact with the electromagnet 701, a millimeter distance is reserved between the side face of the clamping block 704 and the side face of the sound insulation cylinder 503, when the electromagnet 701 is powered on, the electromagnet 701 ejects the permanent magnet 703 out, at this time, the permanent magnet 703 drives the clamping block 704 to move to clamp the sound insulation cylinder 503, when the ventilation block 508 moves up and down, the sound insulation cylinder 503 cannot move along with the ventilation block 508, and the limiting head 507 can limit the upward movement position of the ventilation block 508.

Referring to fig. 6 and 7, a tapered cylinder 602 is fixedly connected to the top end of an air inlet pipe 601, a mounting cylinder 603 is fixedly connected to the side surface of the tapered cylinder 602, the side surface of the mounting cylinder 603 should be fixedly connected to a vehicle body, a motor plate 604 is fixedly connected to the top end of the mounting cylinder 603, a rotating motor 605 is fixedly connected to the top end of the motor plate 604, a rotating shaft 606 is fixedly connected to the bottom end of the rotating motor 605, a first gear 607 is fixedly connected to the bottom end of the rotating shaft 606, a second gear 608 is movably engaged with the side surface of the first gear 607, a fan shaft 609 is fixedly connected to the inner side of the second gear 608, a rotating blade 610 is fixedly connected to the side surface of the fan shaft 609, a ventilation hole is formed in the side surface of the rotating blade 610, the rotating motor 605 drives the rotating shaft 606 to rotate, the rotating shaft 606 drives the rotating blades 610 to rotate through the second gear 608 when rotating, and wind generated when the rotating blades 610 rotate enters the ventilating block 508 through the conical cylinder 602 and the air inlet pipe 601 for cleaning.

Referring to fig. 6 and 7, stabilizing plates 611 are movably connected to two sides of a fan shaft 609, the top end of each stabilizing plate 611 is fixedly connected to the inside of the mounting cylinder 603, a limiting groove is formed in the middle of the inner side of the mounting cylinder 603, a limiting ring 612 is movably connected to the limiting groove of the mounting cylinder 603, the inner side of the limiting ring 612 is fixedly connected to the side surface of the rotating blade 610, a filter plate 613 is fixedly connected to the side surface of the mounting cylinder 603 far away from the tapered cylinder 602, external air is filtered through the filter plate 613, it is ensured that clean air is performed cleanly, and the rotating blade 610 moves relative to the mounting cylinder 603 through the limiting ring 612, so that the limiting effect is achieved, and the rotating blade is enabled to rotate more stably.

A self-adaptive volume adjustment method for a vehicle-mounted sound system comprises the following steps:

s1, when the equipment is in a working state, the outer sound sensor 3 detects the sound outside the vehicle, the inner sound sensor 2 detects the sound inside the vehicle, when the sound outside the vehicle is large and noisy, the outer sound sensor 3 controls the sound played by the loudspeaker 102 to be increased through the control module 4 after receiving the sound signal, so that personnel inside the vehicle can hear clearly, when the inner sound sensor 2 detects that the sound inside the vehicle is large and the sound keeps a continuous state, the control module 4 controls the played sound of the loudspeaker 102 to be reduced, and the personnel inside the vehicle can clearly communicate;

s2, when the dust screen 103 needs to be cleaned, the rotating motor 605 is started to drive the rotating shaft 606 to rotate, the rotating shaft 606 rotates to drive the second gear 608 to rotate through the first gear 607, the fan shaft 609 rotates to drive the limiting ring 612 to rotate through the fan shaft 609, when the limiting ring 612 rotates, the air filtered through the filter plate 613 is blown into the air inlet pipe 601, at the moment, the electromagnet 701 is electrified to enable the limiting cylinder 702 and the permanent magnet 703 to move, the permanent magnet 703 is positioned above the sound insulation cylinder 503 to enable the sound insulation cylinder 503 to be clamped tightly, the moving motor 504 is started to drive the threaded rod 502 to rotate, the threaded rod 502 rotates to drive the air ventilation block 508 to move up and down, when the air ventilation block 508 moves up and down, the air entering the air ventilation block 508 from the air inlet pipe 601 is blown onto the dust screen 103, and therefore dust in the dust screen 103 is blown down;

s3, when the sound played by the dust screen 103 is large and the downward adjustment sound is small, the electromagnet 701 is electrified reversely, the electromagnet 701 attracts the limiting cylinder 702 and the permanent magnet 703, at the moment, the permanent magnet 703 is not in contact with the sound insulation cylinder 503, the moving motor 504 is started to drive the ventilation block 508 to move up and down through the threaded rod 502, the ventilation block 508 moves up and down through the limiting column 506 in close contact with the ventilation block to drive the sound insulation cylinder 503 to move up and down, and therefore the size of the gap between the loudspeaker 102 and the sound insulation cylinder 503 can be adjusted, and the sound emitted by the loudspeaker 102 can be adjusted accurately.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a vehicle audio self-adaptation volume adjusting device, includes stereo set mechanism (1), its characterized in that: one side of acoustic mechanism (1) is equipped with interior sound sensor (2), the opposite side of acoustic mechanism (1) is equipped with outer sound sensor (3), one side fixedly connected with control module (4) on acoustic mechanism (1) top, opposite side fixedly connected with elevating system (5) on acoustic mechanism (1) top, the middle part fixedly connected with chucking mechanism (7) on acoustic mechanism (1) top, the top fixedly connected with mechanism (6) that admits air of elevating system (5), acoustic mechanism (1) includes audio amplifier shell (101), the mounting groove has been seted up to the side of audio amplifier shell (101), fixedly connected with dust screen (103) in the mounting groove of audio amplifier shell (101), the inside fixedly connected with speaker (102) of audio amplifier shell (101).

2. The adaptive volume adjusting device for the car audio according to claim 1, wherein: interior sound sensor (2) and outer sound sensor (3) keep operating condition simultaneously, the priority of interior sound sensor (2) is higher than outer sound sensor (3), interior sound sensor (2) during operation, interior sound sensor (2) detect the interval of speaking and be less than when five seconds, and automatic with speaker (102) sound turn down, when outer sound sensor (3) detected external sound and exceeded eighty decibels, the sound of speaker (102) was increaseed automatically, the detection numerical value accessible control module (4) of interior sound sensor (2) and outer sound sensor (3) are adjusted.

3. The adaptive volume adjusting device for the car audio according to claim 1, wherein: a sound insulation barrel (503) is movably connected in a mounting groove of the sound box shell (101), the side face of the sound insulation barrel (503) is movably connected with the side face of the dustproof net (103), the bottom end of the inner side of the sound insulation barrel (503) is movably connected with an air through block (508), two sides of the inner bottom end of the sound insulation barrel (503) are fixedly connected with a limiting column (506), the inner side of the air through block (508) is provided with a threaded hole, the threaded hole of the air through block (508) is connected with a threaded rod (502) in a threaded manner, the bottom end of the sound insulation barrel (503) is provided with a position avoiding hole, the threaded rod (502) is positioned in the position avoiding hole of the sound insulation barrel (503) and is movably connected with the sound insulation barrel (503), the top end of the threaded rod (502) is fixedly connected with a mobile motor (504), the top end of the mobile motor (504) is fixedly connected with a motor shell (505), and the bottom end of the mobile motor (504) is fixedly connected with a mounting plate (501), the bottom of mounting panel (501) and the top fixed connection of audio amplifier shell (101), the hole of keeping away has been seted up to the both sides on ventilative piece (508) top, spacing post (506) are located the hole of keeping away of ventilative piece (508), the diameter in hole is kept away to the diameter ratio ventilative piece (508) of spacing post (506) is one millimeter big in diameter, spacing post (506) are the rubber material.

4. The adaptive volume adjusting device for the car audio according to claim 3, wherein: the top fixedly connected with intake pipe (601) of ventilative piece (508), intake pipe (601) can stretch out and draw back, just when ventilative piece (508) are located the minimum, intake pipe (601) are in tensile state, ventilative piece (508) have been seted up near the inboard of dust screen (103) and have been ventilated the groove, the side that ventilative piece (508) are close to dust screen (103) has seted up the ventilation hole, sound insulation section of thick bamboo (503) have seted up the ventilation hole near the side of dust screen (103).

5. The adaptive volume adjusting device for the car audio according to claim 3, wherein: the utility model discloses a loudspeaker box, including audio amplifier shell (101), the top fixedly connected with electro-magnet (701) of audio amplifier shell (101), the side of electro-magnet (701) is equipped with a spacing section of thick bamboo (702), the bottom of a spacing section of thick bamboo (702) and the top fixed connection of audio amplifier shell (101), the inside swing joint of a spacing section of thick bamboo (702) has permanent magnet (703), the side fixedly connected with chucking piece (704) of electro-magnet (701) are kept away from in permanent magnet (703), the top fixed connection of spacing post (506) has spacing head (507), when permanent magnet (703) and electro-magnet (701) contact, the side of chucking piece (704) leaves the distance of a millimeter with the side of sound insulation section of thick bamboo (503).

6. The adaptive volume adjusting device for the car audio according to claim 4, wherein: the top fixedly connected with taper cylinder (602) of intake pipe (601), the side fixedly connected with installation section of thick bamboo (603) of taper cylinder (602), the side of installation section of thick bamboo (603) should with automobile body fixed connection, the top fixedly connected with motor board (604) of installation section of thick bamboo (603), the top fixedly connected with of motor board (604) rotates motor (605), the bottom fixedly connected with axis of rotation (606) of rotating motor (605), the bottom fixedly connected with first gear (607) of axis of rotation (606), the side active meshing of first gear (607) has second gear (608), the inboard fixedly connected with fan shaft (609) of second gear (608), the side fixedly connected with of fan shaft (609) rotates blade (610), the ventilation hole has been seted up to the side of rotating blade (610).

7. The adaptive volume adjusting device for the car audio according to claim 6, wherein: the fan shaft structure is characterized in that stabilizing plates (611) are movably connected to two sides of the fan shaft (609), the top end of each stabilizing plate (611) is fixedly connected with the inside of the mounting cylinder (603), a limiting groove is formed in the middle of the inner side of the mounting cylinder (603), a limiting ring (612) is movably connected to the limiting groove of the mounting cylinder (603), the inner side of the limiting ring (612) is fixedly connected with the side face of the rotating blade (610), and a filtering plate (613) is fixedly connected to the side face, far away from the conical cylinder (602), of the mounting cylinder (603).

8. A self-adaptive volume adjustment method for a vehicle-mounted sound is characterized by comprising the following steps:

s1, the equipment is in a working state, the outer sound sensor (3) detects sounds outside the vehicle, the inner sound sensor (2) detects sounds inside the vehicle, when the sounds outside the vehicle are large and noisy, the outer sound sensor (3) controls the sounds played by the loudspeaker (102) to be increased through the control module (4) after receiving sound signals, and therefore it is guaranteed that people inside the vehicle can hear clearly, when the inner sound sensor (2) detects that the sounds inside the vehicle are large and the sounds are kept in a continuous state, the played sounds of the loudspeaker (102) are controlled to be decreased through the control module (4), and people inside the vehicle can clearly communicate;

s2, when the dust screen (103) needs to be cleaned, a rotating motor (605) is started, the rotating motor (605) is started to drive a rotating shaft (606) to rotate, the rotating shaft (606) rotates to drive a second gear (608) to rotate through a first gear (607), a fan shaft (609) rotates to drive a limiting ring (612) to rotate through the fan shaft (609), when the limiting ring (612) rotates, air filtered through a filter plate (613) is blown into an air inlet pipe (601), at the moment, an electromagnet (701) is electrified, the electromagnet (701) is electrified to enable a limiting cylinder (702) and a permanent magnet (703) to move, the permanent magnet (703) is positioned above a sound insulation cylinder (503) to enable the sound insulation cylinder (503) to be clamped with the sound insulation cylinder (503), a moving motor (504) is started to drive a threaded rod (502) to rotate, the threaded rod (502) rotates to drive an air ventilation block (508) to move up and down, and the air ventilation block (508) moves up and down, the air entering the ventilation block (508) from the air inlet pipe (601) is blown to the dustproof net (103), so that the dust in the dustproof net (103) is blown off;

s3, when the sound played by the dust screen (103) is large, and when the downward adjustment sound is small, the electromagnet (701) is electrified reversely, the electromagnet (701) attracts the limiting cylinder (702) and the permanent magnet (703), at the moment, the permanent magnet (703) is not in contact with the sound insulation cylinder (503), the moving motor (504) is started to drive the ventilation block (508) to move up and down through the threaded rod (502), the ventilation block (508) moves up and down and drives the sound insulation cylinder (503) to move up and down through the limiting column (506) in close contact with the ventilation block, so that the size of a gap between the loudspeaker (102) and the sound insulation cylinder (503) can be adjusted, and the sound emitted by the loudspeaker (102) can be adjusted accurately.