Outdoor portable intelligent sound box

Abstract

The application discloses an outdoor portable intelligent sound box, and relates to the technical field of sound box equipment, which comprises a sound box body, a loudspeaker, a knob and a supporting leg, the sound box body is internally provided with a playing unit, the playing unit comprises a conduction assembly and an adjusting assembly; the conduction assembly is fixed in the sound box body and is provided with an obliquely arranged resistance sheet and a magnet one, the length of the resistance sheet actually conducted is changed through the knob, and then the resistance value of the resistance sheet is changed, so that the volume is adjusted; in the case of power failure, the length of the resistance sheet actually conducted is changed through the magnetic attraction of the magnet one, and the resistance value of the resistance sheet is conducted to the maximum, so that the volume is closed; the adjusting assembly is arranged below the conduction assembly and is used for cooperating with the conduction assembly to adjust the volume; the technical effects of automatic volume zero adjustment, improved volume adjustment stability, improved volume adjustment precision, prevention of damage to human hearing and improved service life of the sound box can be achieved.

Description

Technical Field

[0001] This invention relates to the field of audio equipment technology, and more particularly to an outdoor portable smart speaker. Background Technology

[0002] Outdoor portable smart speakers are audio playback devices designed specifically for outdoor environments. They combine portability, intelligence, and high-quality sound to meet users' music playback needs during outdoor activities such as picnics, camping, concerts, and sports.

[0003] Chinese invention patent CN119277255B discloses an outdoor portable speaker, including a speaker body. A volume knob is located on one side of the top surface of the speaker body, and two speakers are symmetrically arranged on one side surface. Four support feet are evenly fixed to the bottom of the speaker body. This invention, through the cooperation of gears and gear rings, ensures that after use, regardless of how much the user turns the volume knob clockwise to increase the volume, the rotation of the gear ring will cause the volume knob to rotate counterclockwise. This prevents the volume from being at maximum when the speaker body is turned off. Therefore, when the speaker body is turned on again, the internal sound-producing components will not be suddenly under full load, thus protecting the internal sound-producing components and extending the lifespan of the speaker body.

[0004] While the above solutions improve the audio experience to some extent, in actual use, outdoor speakers are primarily powered by battery output. If a power outage occurs, the knob cannot automatically return to its original position to turn off the volume. Furthermore, the sudden volume change during a power outage may shock the user's hearing, especially in outdoor environments where noise interference is significant. This instability in volume adjustment affects the accuracy and stability of volume control, reduces the energy consumption of the audio equipment, and shortens battery life. Summary of the Invention

[0005] This application provides an outdoor portable smart speaker that solves the technical problems in the prior art, such as the inability to automatically zero the volume, unstable volume adjustment, reduced volume adjustment accuracy, damage to human hearing, and reduced speaker lifespan. It achieves the technical effects of automatic zeroing of the volume, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of damage to human hearing, and increased speaker lifespan.

[0006] This application provides an outdoor portable smart speaker, including a speaker body, a speaker, a knob and a stand. The speaker body is provided with a playback unit, and the playback unit includes a conduction component and an adjustment component.

[0007] The conductive component is fixed inside the speaker body and has an inclined resistor and a magnet. The actual length of the conductive resistor is changed by turning the knob, thereby changing the resistance value of the resistor and thus adjusting the volume. When the power is off, the magnetic attraction of the magnet changes the actual length of the conductive resistor and makes its resistance value conduct to the maximum value, thereby turning off the volume.

[0008] The adjustment component is located below the conduction component and is used in conjunction with the conduction component to adjust the volume.

[0009] Furthermore, the conductive assembly includes a support plate, a piston cylinder, a roller, and a magnet.

[0010] The support plate has an L-shaped structure, is placed at an angle, and is fixed inside the speaker body; a resistor is embedded in the support plate, and a magnet is fixed to its vertical section; the resistor is a long strip structure; the piston cylinder is fixed to the right end of the support plate and located above the resistor, and a piston block is slidably connected to it through a piston rod; a roller is fixed to the left end of the piston rod through a connecting frame; the roller is slidably connected inside the resistor and is used to contact the resistor and realize the power conduction of the circuit.

[0011] Furthermore, the connecting frame is made of iron and is used to cooperate with the magnet. Through magnetic attraction, the roller moves downward along the support plate and automatically returns to its original position, so as to automatically turn off the volume of the speaker body after use.

[0012] Furthermore, the speaker is fixed to the speaker body via a conductive end and is connected to an external power source via a wire.

[0013] Furthermore, the roller is connected to the conducting terminal of the speaker via an output line, and the right end of the resistor is connected to the conducting terminal of the speaker via an input line; when the roller moves upward, as the length of the resistor decreases, the resistance value decreases, and the volume of the speaker increases.

[0014] Furthermore, the adjustment assembly includes gear one, gear two, rack, fixing plate one, and fixing plate two;

[0015] The first gear is fixed below the knob via a rotating shaft; the first fixing plate is fixed to the top inside the speaker body to support the second gear; the second gear is slidably connected to the first fixing plate via a U-shaped frame, and the second gear and the U-shaped frame are rotatably connected via a rotating shaft; the second fixing plate is fixed to the top inside the speaker body and located in front of the first fixing plate, providing a moving track for the rack; the rack is slidably connected to the second fixing plate and meshes with the second gear, and the rack is fixedly connected to the connecting frame via a connecting rod, used to drive the piston rod to move through transmission, thereby adjusting the volume.

[0016] Furthermore, an electromagnet is fixed at the top of the speaker body; the top of the U-shaped frame is made of iron, which generates magnetism when the electromagnet is energized. The U-shaped frame drives the gear two to move upward along the fixed plate through magnetic attraction and meshes with the gear one and the rack, thereby adjusting the volume by rotating the knob.

[0017] Furthermore, a valve is rotatably connected to the rear end of the piston cylinder via a torsion spring. An electromagnet, which cooperates with the valve, is fixed on the rear end of the piston cylinder, and the piston cylinder is opened and closed by magnetic attraction. During volume adjustment, the electromagnet is de-energized, and the valve automatically falls under its own weight and the action of the torsion spring, allowing the air in the piston cylinder to be discharged from the valve. When the volume adjustment is completed, the electromagnet is energized and cooperates with the valve to close the piston cylinder. At this time, the inside of the piston cylinder is in a negative pressure state, and the piston block is positioned by the negative pressure, thereby fixing the position after volume adjustment.

[0018] Furthermore, the inner wall of the piston cylinder has a curved structure, which is divided into two parts, including a flexible layer and a rigid layer;

[0019] The rigid layer has an arc-shaped structure, and there are two of them arranged horizontally, made of a rigid material; the flexible layer has an arc-shaped structure, made of flexible rubber, and there are two of them arranged vertically, fixed between the two rigid layers respectively.

[0020] Furthermore, the piston block has a spherical structure and a small ball is fixed at its right end. When the piston cylinder is under negative pressure, the flexible layer is concave towards the piston cylinder axis and wraps around the small ball, thereby improving the positioning accuracy.

[0021] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0022] By using magnet one in conjunction with the roller, the volume is automatically turned off after power failure. Through the interaction of gears and racks and the negative pressure within the piston cylinder, precise volume adjustment and fixation are achieved, avoiding fluctuations and instability during volume adjustment. By using electromagnet one in conjunction with gear two, the volume adjustment function is locked under specific conditions (such as after power failure). This effectively solves the technical problems of existing technologies, such as the inability to automatically zero the volume, unstable volume adjustment, reduced volume adjustment accuracy, damage to human hearing, and reduced speaker lifespan. It achieves the technical effects of automatic volume zeroing, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of damage to human hearing, and increased speaker lifespan. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an outdoor portable smart speaker according to the present invention.

[0024] Figure 2This is a partial three-dimensional structural cross-sectional view of an outdoor portable smart speaker according to the present invention.

[0025] Figure 3 This is a rear view of an outdoor portable smart speaker according to the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the conduction component and adjustment component of an outdoor portable smart speaker according to the present invention.

[0027] Figure 5 This invention relates to an outdoor portable smart speaker. Figure 4 A magnified view of a portion of point A in the middle.

[0028] Figure 6 This is a longitudinal full sectional view of the conduction component and adjustment component of an outdoor portable smart speaker according to the present invention.

[0029] Figure 7 This is a three-dimensional structural diagram of the outdoor portable smart speaker of the present invention when gear two is not meshing with gear one and rack.

[0030] Figure 8 This is a three-dimensional structural diagram of the piston cylinder of an outdoor portable smart speaker according to the present invention.

[0031] Figure 9 This is a longitudinal full sectional view of the piston cylinder of an outdoor portable smart speaker according to the present invention.

[0032] Figure 10 This invention relates to an outdoor portable smart speaker. Figure 9 Full sectional view from the center BB direction.

[0033] Figure 11 This is a schematic diagram showing the state of the piston cylinder of an outdoor portable smart speaker under negative pressure, where its soft layer compresses the small ball.

[0034] Figure 12 This is a schematic diagram showing the piston cylinder of an outdoor portable smart speaker of the present invention positioning the piston under negative pressure.

[0035] In the diagram: 100, speaker body; 101, input cable; 102, output cable; 110, speaker; 111, conducting terminal; 120, knob; 121, rotating shaft; 130, support foot; 140, electromagnet one; 150, electromagnet two; 200, conducting assembly; 210, support plate; 211, resistor; 220, piston cylinder; 221, piston rod; 222, piston block; 223, small ball; 224, flexible layer; 225, rigid layer; 230, roller; 231, connecting frame; 240, magnet one; 250, valve; 300, adjusting assembly; 310, gear one; 320, gear two; 330, rack; 331, connecting rod; 340, fixing plate one; 341, U-shaped frame; 350, fixing plate two. Detailed Implementation

[0036] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0037] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Please see Figure 1 This is a schematic diagram of the overall structure of an outdoor portable smart speaker according to the present invention. The outdoor portable smart speaker of this application achieves automatic volume shutdown after power failure through the cooperation of magnet 240 and roller 230; through the cooperation of gears and racks and the negative pressure state within the piston cylinder 220, it achieves precise adjustment and fixation of the volume level, avoiding fluctuations and instability during volume adjustment; through the cooperation of electromagnet 140 and gear 320, it achieves volume adjustment function locking under specific conditions (such as after power failure); thus achieving the technical effects of automatic volume zeroing, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of harm to human hearing, and increased speaker lifespan.

[0040] Example 1: As Figures 1 to 7As shown, this application discloses an outdoor portable smart speaker, which includes a speaker body 100, a speaker 110, a knob 120 and a stand 130. The speaker body 100 is provided with a playback unit, which includes a conduction component 200 and an adjustment component 300.

[0041] The conductive component 200 is fixed inside the speaker body 100 and has an inclined resistor 211 and a magnet 240. The actual length of the conductive resistor 211 is changed by the knob 120, thereby changing the resistance value of the resistor 211 and thus adjusting the volume. When the power is off, the magnetic attraction of the magnet 240 changes the actual length of the conductive resistor 211 and makes its resistance value conduct to the maximum value, thereby turning off the volume.

[0042] The adjustment component 300 is located below the conduction component 200 and is used in conjunction with the conduction component 200 to adjust the volume.

[0043] The conductive assembly 200 includes a support plate 210, a piston cylinder 220, a roller 230, and a magnet 240.

[0044] The support plate 210 has an L-shaped structure, is placed at an angle, and is fixed inside the speaker body 100; the support plate 210 has a resistor 211 embedded in it, and a magnet 240 is fixed in its vertical section. The resistor 211 has a long strip structure, and the magnet 240 is a permanent magnet made of ferrite permanent magnet material.

[0045] The connecting frame 231 is made of iron and is used to cooperate with the magnet 240. Through magnetic attraction, the roller 230 is driven to move downward along the support plate 210 and automatically return to its original position, so as to realize the automatic volume reduction of the speaker body 100 after use.

[0046] The piston cylinder 220 is fixed to the right end of the support plate 210 and located above the resistor piece 211. Inside the piston cylinder 220, a piston block 222 is slidably connected via a piston rod 221. The left end of the piston rod 221 is fixed with a roller 230 via a connecting frame 231. The roller 230 is slidably connected inside the resistor piece 211 and is used to contact the resistor piece 211 to achieve energization and conduction of the circuit.

[0047] The connecting frame 231 is made of iron and is used to cooperate with the magnet 240. Through magnetic attraction, the roller 230 is driven to move downward along the support plate 210 and automatically return to its original position, so as to automatically turn off the volume of the speaker body 100 after use.

[0048] The speaker 110 is fixed to the speaker body 100 through the conductive end 111 and is connected to an external power source through a wire.

[0049] The roller 230 is connected to the conducting terminal 111 of the speaker 110 via the output line 102, and the right end of the resistor 211 is connected to the conducting terminal 111 of the speaker 110 via the input line 101. When the roller 230 moves upward, as the length of the resistor 211 decreases, the resistance value decreases, and the volume of the speaker 110 increases.

[0050] The adjustment assembly 300 includes a first gear 310, a second gear 320, a rack 330, a first fixing plate 340, and a second fixing plate 350;

[0051] The first gear 310 is fixed below the knob 120 via a rotating shaft 121; the first fixing plate 340 is fixed inside the top of the speaker body 100 to support the second gear 320; the second gear 320 is slidably connected to the first fixing plate 340 via a U-shaped frame 341, and the second gear 320 and the U-shaped frame 341 are rotatably connected via a rotating shaft; the second fixing plate 350 is fixed inside the top of the speaker body 100 and located in front of the first fixing plate 340 to provide a moving track for the rack 330; the rack 330 is slidably connected to the second fixing plate 350 and meshes with the second gear 320; the rack 330 is fixedly connected to the connecting frame 231 via a connecting rod 331, and is used to drive the piston rod 221 to move via transmission, thereby adjusting the volume. By using a gear and rack mechanism, rotating the knob 120 causes the piston rod 221 and piston block 222 to move up and down along the inclined surface of the support plate 210, thereby changing the length of the connected resistor 211 and adjusting the volume.

[0052] An electromagnet 140 is fixed at the top of the speaker body 100; the top of the U-shaped frame 341 is made of iron, which generates magnetism after the electromagnet 140 is energized. The U-shaped frame 341 drives the gear 320 to move upward along the fixed plate 340 through magnetic attraction, and meshes with the gear 310 and the rack 330. The volume can then be adjusted by rotating the knob 120.

[0053] The piston cylinder 220 is rotatably connected to a valve 250 via a torsion spring at its rear end. An electromagnet 150, which cooperates with the valve 250, is fixed on the rear end of the piston cylinder 220. The piston cylinder 220 is opened and closed by magnetic attraction. During volume adjustment, the electromagnet 150 is de-energized, and the valve 250 automatically falls under its own weight and the action of the torsion spring, allowing the air inside the piston cylinder 220 to be discharged from the valve 250. When the volume adjustment is completed, the electromagnet 150 is energized and cooperates with the valve 250 to close the piston cylinder 220. At this time, the piston cylinder 220 is in a negative pressure state. The piston block 222 is positioned by the negative pressure, thereby fixing the position after volume adjustment.

[0054] In actual operation, the steps of this embodiment are as follows: First, in the initial state, electromagnet 150 is de-energized, valve 250 is open, and air circulates between the inside and outside of piston cylinder 220. Power is then connected, and knob 120 is rotated as needed to move piston block 222 upward, causing gas in piston cylinder 220 to be discharged from valve 250. Next, after the volume adjustment is completed, in order to fix the volume (i.e., fix the position of piston block 222), electromagnet 150 is energized, valve 250 is closed, piston cylinder 220 is sealed, and a negative pressure state is maintained. At this time, piston block 222 no longer moves due to the negative pressure, thereby fixing the position of piston block 222 and the volume. When it is necessary to reduce or turn off the volume, it is de-energized, electromagnet 150 is de-energized, valve 250 is opened, the air pressure in piston cylinder 220 returns to normal, piston block 222 moves downward under the attraction of magnet 240, the length of resistor 211 increases, the resistance increases, and the volume decreases or turns off.

[0055] To prevent sudden increases in volume caused by random volume adjustments from impacting the listener's hearing, the electromagnet 140 is de-energized. At this time, gear 2 320 can move downwards along the fixed plate 1 340 under its own gravity, without engaging with gear 1 310 or rack 330. This ensures that the volume cannot be adjusted by rotating knob 120, thus providing a secondary protection function.

[0056] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0057] This application achieves volume adjustment by placing an inclined support plate 210 inside the speaker body 100 and embedding a resistor 211 inside, and by having a roller 230 move and connect inside the resistor 211; a piston block 222 is connected by a piston rod 221, and the movement of the piston block 222 drives the roller 230 to move, changing the effective length of the resistor 211, thereby adjusting the volume; the magnetic attraction of magnet 240 is used to achieve automatic return of the roller 230 after power failure, thereby turning off the volume, solving the problem that the volume cannot be automatically turned off after power failure; the valve 250 is controlled by electromagnet 150, and a negative pressure is used to fix the position of the piston block 222 (i.e., fix the position of the roller 230, thereby controlling the resistance value of the resistor 211), thereby fixing the volume.

[0058] The automatic volume reduction after power failure is achieved through the cooperation of magnet 240 and roller 230, preventing the speaker from maintaining a high volume after power loss, protecting the internal sound-producing components, and extending its service life. The precise adjustment and fixation of the volume is achieved through the cooperation of gears and racks and the negative pressure within piston cylinder 220, avoiding fluctuations and instability during volume adjustment. The locking of the volume adjustment function under specific conditions (such as after power failure) is achieved through the cooperation of electromagnet 140 and gear 320, preventing sudden volume increases due to accidental operation and protecting the listener's hearing health. Precise volume adjustment and automatic protection functions enhance the user experience and satisfaction when using the speaker. This achieves the technical effects of automatic volume zeroing, improved volume adjustment stability, improved volume adjustment accuracy, prevention of hearing damage, and extended speaker lifespan.

[0059] Example 2: In order to improve the positioning effect of the piston block 222 achieved by negative pressure, and thus improve the contact stability between the roller 230 and the resistor sheet 211, this application proposes the following technical solution to address the above-mentioned technical problems, specifically:

[0060] like Figures 8 to 12 As shown, the inner wall of the piston cylinder 220 has a curved structure and is divided into two parts, including a flexible layer 224 and a rigid layer 225.

[0061] The rigid layer 225 has an arc-shaped structure, and there are two of them arranged side by side. They are made of rigid material. The flexible layer 224 has an arc-shaped structure, and there are two of them arranged vertically. They are fixed between the two rigid layers 225 respectively.

[0062] This application designs the inner wall of the piston cylinder 220 as a curved structure, and includes a combination of a flexible layer 224 and a rigid layer 225. When the volume adjustment position is fixed, and the roller 230 tends to move downward along the support plate 210 under the attraction of the magnet 240, the negative pressure state inside the piston cylinder 220 (valve 250 closed) will cause the flexible layer 224 to deform, thereby squeezing the piston block 222 and hindering its movement. This enhances the fixation of the piston block 222's position, thereby improving the accuracy of volume positioning.

[0063] The elastic deformation properties of the flexible layer 224 provide additional resistance under negative pressure, preventing the piston block 222 from moving unnecessarily due to external disturbances or internal stress, thus ensuring the stability of the volume position after it is fixed and maintaining a constant volume even in complex usage environments.

[0064] Meanwhile, the rigid layer 225 is made of hard material, providing necessary structural support for the piston cylinder 220 and ensuring its stability and durability during use; the flexible layer 224 is made of flexible rubber material, which not only has good elastic deformation capability, but also absorbs and disperses external impact force to a certain extent, further protecting the stability of the piston block 222 and the entire volume adjustment mechanism.

[0065] Example 3: To further improve the positioning accuracy of piston block 222, and thus improve the stability of volume after adjustment, this application proposes the following technical solution to address the above-mentioned technical problems:

[0066] like Figures 8 to 12 As shown, the piston block 222 has a spherical structure and a small ball 223 is fixed at its right end. When the piston cylinder 220 is under negative pressure, the flexible layer 224 is concave towards the axis of the piston cylinder 220 and wraps the small ball 223 under the action of negative pressure, thereby improving the positioning accuracy.

[0067] This application provides a clear reference point or positioning point for the piston block 222 by fixing the small ball 223. When the piston cylinder 220 is under negative pressure, the deformation of the flexible layer 224 will directly act on the small ball 223. By wrapping the small ball 223, the position of the piston block 222 is fixed more accurately, reducing the slight movement of the piston block 222 during the positioning process, thereby significantly improving the accuracy of volume positioning.

[0068] Meanwhile, as part of the piston block 222, the fixed position and shape of the small ball 223 can be precisely controlled during manufacturing, which helps to reduce system errors and uncertainties. The fixing method of using a flexible layer 224 to wrap the small ball 223 increases the contact area and friction between the piston block 222 and the piston cylinder 220, further improving the stability and reliability of the system. When the volume needs to be adjusted, the piston block 222 can respond more quickly to the rotation of the knob 120 because the small ball 223 provides a clear force transmission point, allowing the force to act more directly on the piston block 222, improving the speed of volume positioning.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An outdoor portable smart sound box, comprising a sound box body (100), a loudspeaker (110), a knob (120) and a supporting leg (130), characterized in that, The sound body (100) is internally provided with a playing unit, which comprises a conducting assembly (200) and an adjusting assembly (300); The conducting assembly (200) is fixed in the sound body (100) and is provided with an obliquely arranged resistance sheet (211) and a magnet (240); the length of the resistance sheet (211) actually conducting is changed by a knob (120), so as to change the resistance value of the resistance sheet (211) and realize the adjustment of the volume; in the case of power failure, the length of the resistance sheet (211) actually conducting is changed by the magnetic attraction of the magnet (240) and the resistance value is conducted to the maximum, so as to realize the closing of the volume; The adjusting assembly (300) is arranged below the conducting assembly (200) and is used for cooperating with the conducting assembly (200) to adjust the volume. The conducting assembly (200) comprises a support plate (210), a piston cylinder (220), a roller (230) and a magnet (240); the support plate (210) is embedded with the resistance sheet (211), and a vertical section of the support plate (210) is fixed with the magnet (240); the piston cylinder (220) is fixed at the right end of the support plate (210) and above the resistance sheet (211), and a piston block (222) is slidably connected in the piston cylinder (220) through a piston rod (221), and the roller (230) is fixed on the left end of the piston rod (221) through a connecting frame (231). The connecting frame (231) is made of iron and is used for cooperating with the magnet (240) to drive the roller (230) to move downward along the support plate (210) and automatically return through the magnetic attraction, so as to realize the automatic closing of the volume after the sound body (100) is used. The rear end of the piston cylinder (220) is rotatably connected with a valve (250) through a torsional spring, and the rear end of the piston cylinder (220) is fixed with an electromagnet (150) matched with the valve (250), so as to realize the opening and closing of the piston cylinder (220) through the magnetic attraction. The inner wall of the piston cylinder (220) is of a curved structure and is divided into two parts, comprising a flexible layer (224) and a rigid layer (225); the piston block (222) is of a spherical structure and is fixed with a small ball (223) at the right end thereof; when the piston cylinder (220) is in a negative pressure state, the flexible layer (224) is concave to the axis of the piston cylinder (220) and wraps the small ball (223) under the action of the negative pressure, so as to improve the positioning accuracy.

2. The outdoor portable smart sound system of claim 1, wherein, The support plate (210) is of an L-shaped structure and is obliquely arranged and fixed in the sound body (100); the resistance sheet (211) is of a strip structure; the roller (230) is slidably connected in the resistance sheet (211) and is used for contacting the resistance sheet (211) and realizing the conduction of the circuit.

3. The outdoor portable smart sound system of claim 1, wherein, The loudspeaker (110) is fixed on the sound body (100) through a conducting end (111) and is connected with an external power supply through a wire.

4. The outdoor portable smart sound system of claim 3, wherein, The roller (230) is communicated with the conducting end (111) of the loudspeaker (110) through the output line (102), and the right end of the resistance sheet (211) is communicated with the conducting end (111) of the loudspeaker (110) through the input line (101); when the roller (230) moves upward, the resistance value decreases with the decrease of the length of the resistance sheet (211), and the volume of the loudspeaker (110) is larger.

5. The outdoor portable smart sound system of claim 1, wherein, The adjusting assembly (300) comprises a gear one (310), a gear two (320), a rack (330), a fixed plate one (340) and a fixed plate two (350). The gear one (310) is fixed below the knob (120) through the rotating shaft (121); the fixed plate one (340) is fixed at the top end inside the sound body (100) and is used for supporting the gear two (320); the gear two (320) is slidably connected in the fixed plate one (340) through the U-shaped frame (341), and the gear two (320) is rotatably connected with the U-shaped frame (341) through a rotating shaft; the fixed plate two (350) is fixed at the top end inside the sound body (100) and is located in front of the fixed plate one (340) and is used for providing a moving track for the rack (330); the rack (330) is slidably connected in the fixed plate two (350) and is engaged with the gear two (320), and the rack (330) is fixedly connected with the connecting frame (231) through the connecting rod (331) and is used for driving the piston rod (221) to move through transmission and then adjusting the volume.

6. The outdoor portable smart sound system of claim 5, wherein, The top end inside the sound body (100) is fixed with the electromagnet one (140); the top of the U-shaped frame (341) is made of iron and generates magnetism after the electromagnet one (140) is powered on, the U-shaped frame (341) drives the gear two (320) to move upward along the fixed plate one (340) through magnetic attraction and is engaged with the gear one (310) and the rack (330), and then the volume adjustment is realized by rotating the knob (120).

7. The outdoor portable smart sound system of claim 1, wherein, During the volume adjustment process, the electromagnet two (150) is powered off, the valve (250) automatically falls down under the action of its own gravity and the torsional spring, so that the air in the piston cylinder (220) is discharged from the valve (250), when the volume adjustment is completed, the electromagnet two (150) is powered on and cooperates with the valve (250) to realize the closing of the piston cylinder (220), at this time, the inside of the piston cylinder (220) is in a negative pressure state, the positioning of the piston block (222) is realized through the negative pressure effect, and then the position fixing after the volume adjustment is realized.

8. The outdoor portable smart sound system of claim 1, wherein, The rigid layer (225) is in an arc structure, is provided with two and is arranged left and right, and is made of hard material; the flexible layer (224) is in an arc structure, is made of flexible rubber material, is provided with two and is arranged up and down, and is fixed between the two rigid layers (225) respectively.

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