Outdoor portable intelligent sound box

Abstract

The invention discloses outdoor portable intelligent sound equipment, and relates to the technical field of sound equipment, the outdoor portable intelligent sound equipment comprises a sound equipment body, a loudspeaker, a knob and supporting legs, the sound equipment body is internally provided with a playing unit, and the playing unit comprises a conduction assembly and an adjusting assembly; the conduction assembly is fixed in the sound equipment body and is provided with a resistor disc and a magnet I which are obliquely arranged, and the length of the actually conducted resistor disc is changed through a knob, so that the resistance value of the resistor disc is changed, and the volume adjustment is realized; under the condition of power failure, through the magnetic attraction effect of the first magnet, the length of the actually-conducted resistor disc is changed, and the resistance value of the resistor disc is conducted to the maximum value, so that the volume is turned off; the adjusting assembly is arranged below the conduction assembly and is used for being matched with the conduction assembly to adjust the volume; the technical effects that the volume is automatically zeroed, the volume adjustment stability is improved, the volume adjustment accuracy is improved, the damage to the hearing of a human body is avoided, and the service life of the sound equipment is prolonged can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of audio equipment, and in particular to an outdoor portable intelligent audio system. Background Art

[0002] An outdoor portable smart speaker is an audio playback device designed specifically for outdoor environments. It combines portability, intelligence, and high-quality sound effects to meet users' music playback needs during outdoor activities such as picnics, camping, concerts, sports and fitness, etc.

[0003] Chinese invention patent number CN119277255B discloses an outdoor portable speaker, comprising a speaker body, a volume knob disposed on one side of the top surface of the speaker body, two sound-emitting speakers symmetrically disposed on one side of the surface of the speaker body, and four support feet uniformly fixedly disposed on the bottom of the speaker body. This invention utilizes the coordination of components such as gears and a gear ring, so that after the speaker body is used, no matter how much the user turns the volume knob clockwise to increase the volume of the speaker body, the rotation of the gear ring will drive the volume knob to rotate counterclockwise after use, thereby avoiding the sound body being at the maximum volume when the speaker body is turned off. Thus, when the speaker body is turned on for use the next time, the sound-emitting components inside the speaker body will not suddenly be at full load, thereby protecting the sound-emitting components inside the speaker body and extending the service life of the speaker body.

[0004] Although the above solution improves the use effect to a certain extent when using the audio, in actual use, since the power drive of the outdoor audio is basically the battery output current, if there is a sudden power outage, the knob cannot automatically return to its original position, turning off the volume; and during a power outage, since the volume cannot automatically return to zero, the sudden volume change may cause an impact on the user's hearing, especially in outdoor environments with large noise interference and unstable volume adjustment process, which affects the accuracy and stability of the volume adjustment, damages the energy consumption of the audio equipment, and shortens the battery life. Summary of the Invention

[0005] This application solves the technical problems in the prior art that the volume cannot be automatically adjusted to zero, the volume adjustment is unstable, the volume adjustment accuracy is reduced, damage to human hearing is caused, and the service life of the speaker is reduced by providing an outdoor portable smart speaker. The application achieves the technical effects of automatic volume adjustment to zero, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of damage to human hearing, and increased service life of the speaker.

[0006] The present application provides an outdoor portable smart speaker, comprising a speaker body, a speaker, a knob and a support leg. A playback unit is provided inside the speaker body, and the playback unit includes a conduction component and an adjustment component;

[0007] The conduction component is fixed inside the speaker body and has an obliquely arranged resistor sheet and magnet 1. The actual length of the resistor sheet that is conducted is changed by turning the knob, thereby changing the resistance value of the resistor sheet, thereby achieving volume adjustment. When the power is off, the magnetic attraction of magnet 1 changes the actual length of the resistor sheet and makes its resistance value conduct to the maximum value, thereby achieving volume turning off.

[0008] The adjustment component is arranged below the conduction component and is used to cooperate with the conduction component to adjust the volume.

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

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

[0011] Furthermore, the connecting frame is made of iron and is used to cooperate with a magnet. Through magnetic attraction, the roller is driven to move downward along the support plate and automatically return to its original position, thereby realizing automatic volume reduction of the audio body after use.

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

[0013] Furthermore, the roller is connected to the conduction end of the speaker through an output line, and the right end of the resistor is connected to the conduction end of the speaker through 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 becomes louder.

[0014] Furthermore, the adjustment assembly includes a first gear, a second gear, a rack, a first fixing plate and a second fixing plate;

[0015] The gear 1 is fixed under the knob through a rotating shaft; the fixed plate 1 is fixed to the top of the interior of the audio body and is used to support the gear 2; the gear 2 is slidably connected to the fixed plate 1 through a U-shaped frame, and the gear 2 and the U-shaped frame are rotatably connected through a rotating shaft; the fixed plate 2 is fixed to the top of the interior of the audio body and is located in front of the fixed plate 1, and is used to provide a moving track for the rack; the rack is slidably connected to the fixed plate 2 and meshes with the gear 2, and the rack is fixedly connected to the connecting frame through a connecting rod, and is used to drive the piston rod to move through transmission, thereby adjusting the volume.

[0016] Furthermore, an electromagnet 1 is fixed to the top of the interior of the audio body; the top of the U-shaped frame is made of iron, and magnetism is generated when the electromagnet 1 is energized. The U-shaped frame drives the gear 2 to move upward along the fixed plate 1 through magnetic attraction, and engages with the gear 1 and the rack, and then the volume is adjusted by turning the knob.

[0017] Furthermore, the rear end of the piston cylinder is connected to a valve through a torsion spring, and an electromagnet 2 is fixed on the rear end of the piston cylinder to cooperate with the valve, and the opening and closing of the piston cylinder is realized by magnetic attraction; during the volume adjustment process, the electromagnet 2 is powered off, and the valve automatically falls under its own gravity and the action of the torsion spring, so that the air in the piston cylinder is discharged from the valve. When the volume adjustment is completed, the electromagnet 2 is powered on and cooperates with the valve to realize the closing of the piston cylinder. At this time, the inside of the piston cylinder is in a negative pressure state, and the positioning of the piston block is realized by the negative pressure action, thereby realizing the fixed position after the volume adjustment.

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

[0019] The rigid layer is an arc-shaped structure, two of which are arranged on the left and right, and is made of a hard material; the flexible layer is an arc-shaped structure, and is made of a flexible rubber material, two of which are arranged on the top and bottom, and are fixed between the two rigid layers respectively.

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

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

[0022] Through the cooperation of magnet 1 and the roller, the volume is automatically turned off after power is cut off; through the cooperation of gears and racks and the negative pressure state in the piston cylinder, the volume is accurately adjusted and fixed, avoiding fluctuations and instability in the volume adjustment process; through the cooperation of electromagnet 1 and gear 2, the volume adjustment function is locked under specific circumstances (such as after power is cut off), effectively solving the technical problems in the prior art that the volume cannot be automatically adjusted to zero, the volume adjustment is unstable, the volume adjustment accuracy is reduced, damage to human hearing is caused, and the service life of the audio is reduced, and the technical effects of automatic volume adjustment to zero, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of damage to human hearing, and increased service life of the audio are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2This is a partial three-dimensional cross-sectional view of the structure 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 schematic diagram of the three-dimensional structure of the conducting component and the adjusting component of an outdoor portable intelligent speaker of the present invention.

[0027] Figure 5 The present invention is an outdoor portable intelligent speaker Figure 4 A partial enlarged schematic diagram of point A in the middle.

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

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of an outdoor portable smart speaker of the present invention when gear 2 is not engaged with gear 1 and the rack.

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the piston cylinder of an outdoor portable intelligent speaker of the present invention.

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

[0032] Figure 10 The present invention is an outdoor portable intelligent speaker Figure 9 Full cross-section view in the middle BB direction.

[0033] Figure 11 This is a schematic diagram of the state of the piston cylinder of an outdoor portable smart speaker of the present invention when its soft layer squeezes the ball under negative pressure.

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

[0035] In the figure: 100, speaker body; 101, input line; 102, output line; 110, speaker; 111, conduction terminal; 120, knob; 121, shaft; 130, support foot; 140, electromagnet 1; 150, electromagnet 2; 200, conduction component; 210, support plate; 211, resistor; 220, piston cylinder; 221, piston rod; 222, piston block; 223, ball; 224, flexible layer; 225, rigid layer; 230, roller; 231, connecting frame; 240, magnet 1; 250, valve; 300, adjustment component; 310, gear 1; 320, gear 2; 330, rack; 331, connecting rod; 340, fixing plate 1; 341, U-shaped frame; 350, fixing plate 2. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

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

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

[0039] See also Figure 1 , which is a schematic diagram of the overall structure of an outdoor portable smart speaker of the present invention; the outdoor portable smart speaker of the present invention realizes automatic volume reduction after power failure through the cooperation of magnet 1 240 and roller 230; through the cooperation of gear rack and the negative pressure state in the piston cylinder 220, the volume is accurately adjusted and fixed, avoiding fluctuation and instability in the volume adjustment process; through the cooperation of electromagnet 1 140 and gear 2 320, the volume adjustment function is locked under specific circumstances (such as after power failure); the technical effects of automatic volume zeroing, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of damage to human hearing and increased service life of the speaker are achieved.

[0040] Example 1: Figures 1 to 7As shown, the present application discloses an outdoor portable smart speaker, comprising a speaker body 100, a speaker 110, a knob 120 and a support leg 130. A playback unit is provided inside the speaker body 100, and the playback unit comprises a conducting component 200 and an adjusting component 300;

[0041] The conduction assembly 200 is fixed inside the speaker body 100 and has an obliquely arranged resistor 211 and a magnet 1 240. The knob 120 is used to change the actual length of the resistor 211, thereby changing the resistance value of the resistor 211, thereby adjusting the volume. When the power is off, the magnetic attraction of the magnet 1 240 changes the actual length of the resistor 211 and makes its resistance value reach the maximum value, thereby turning off the volume.

[0042] The adjustment component 300 is disposed below the conduction component 200 and is used to cooperate with the conduction component 200 to adjust the volume.

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

[0044] The support plate 210 is an L-shaped structure, placed at an angle, and fixed in the speaker body 100; a resistor 211 is embedded in the support plate 210, and a magnet 240 is fixed to its vertical section. The resistor 211 is 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 1 240. Through magnetic attraction, the roller 230 moves downward along the support plate 210 and automatically returns to its original position, thereby automatically turning off the volume of the speaker body 100 after use.

[0046] The piston cylinder 220 is fixed to the right end of the support plate 210 and is located above the resistor 211. A piston block 222 is slidably connected to the interior of the piston cylinder 220 via a piston rod 221. A roller 230 is fixed to the left end of the piston rod 221 via a connecting frame 231. The roller 230 is slidably connected to the resistor 211 and is used to contact the resistor 211 and realize electrical conduction of the circuit.

[0047] The connecting frame 231 is made of iron and is used to cooperate with the magnet 1 240. Through the magnetic attraction, the roller 230 is driven to move downward along the support plate 210 and automatically return to its original position, so that the volume of the audio body 100 is automatically turned off after use.

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

[0049] The roller 230 is connected to the conductive end 111 of the speaker 110 through the output line 102, and the right end of the resistor 211 is connected to the conductive end 111 of the speaker 110 through 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 gear 1 310 , a gear 2 320 , a rack 330 , a fixing plate 1 340 , and a fixing plate 2 350 ;

[0051] The gear 1 310 is fixed below the knob 120 via the rotating shaft 121; the fixing plate 1 340 is fixed to the top of the interior of the audio body 100 for supporting the gear 2 320; the gear 2 320 is slidably connected to the fixing plate 1 340 via the U-shaped frame 341, and the gear 2 320 and the U-shaped frame 341 are rotatably connected via a rotating shaft; the fixing plate 2 350 is fixed to the top of the interior of the audio body 100 and is located in front of the fixing plate 1 340, for providing a moving track for the rack 330; the rack 330 is slidably connected to the fixing plate 2 350 and meshes with the gear 2 320, and the rack 330 is fixedly connected to the connecting frame 231 via a connecting rod 331, for driving the piston rod 221 to move through transmission, thereby adjusting the volume. By rotating the knob 120 through the gear rack, the piston rod 221 and the piston block 222 are driven 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 to the top of the speaker body 100; the top of the U-shaped frame 341 is made of iron. When the electromagnet 140 is energized, magnetism is generated. The U-shaped frame 341 drives the gear 2 320 to move upward along the fixed plate 1 340 through magnetic attraction, and engages with the gear 1 310 and the rack 330, and then the volume is adjusted by turning the knob 120.

[0053] The rear end of the piston cylinder 220 is connected to the valve 250 through a torsion spring. The rear end of the piston cylinder 220 is fixed with an electromagnet 2 150 that cooperates with the valve 250, and the opening and closing of the piston cylinder 220 is achieved by magnetic attraction. During the volume adjustment process, the electromagnet 2 150 is powered off, and the valve 250 automatically falls under its own gravity and the action of the torsion spring, so that the air in the piston cylinder 220 is discharged from the valve 250. When the volume adjustment is completed, the electromagnet 2 150 is powered on and cooperates with the valve 250 to achieve the closing of the piston cylinder 220. At this time, the interior of the piston cylinder 220 is in a negative pressure state, and the positioning of the piston block 222 is achieved by the negative pressure, thereby achieving the fixed position after the volume adjustment.

[0054] During actual operation of the embodiment of the present application, the steps are as follows: first, in the initial state, the electromagnet 2 150 is de-energized, the valve 250 is opened, and the air inside the piston cylinder 220 is circulated with the outside air. The power is turned on, and the knob 120 is rotated as needed to drive the piston block 222 to move upward, and the gas in the piston cylinder 220 is discharged from the valve 250; then, after the volume adjustment is completed, in order to achieve fixed volume (i.e., to achieve fixed position of the piston block 222), the electromagnet 2 150 is energized, the valve 250 is closed, the interior of the piston cylinder 220 is sealed, and a negative pressure state is maintained. At this time, the piston block 222 no longer moves due to the negative pressure, thereby achieving fixed position of the piston block 222 and volume; when it is necessary to reduce or turn off the volume, it is de-energized, the electromagnet 2 150 is de-energized, the valve 250 is opened, the air pressure in the piston cylinder 220 returns to normal, and the piston block 222 moves downward under the attraction of the magnet 1 240, the length of the resistor 211 becomes longer, the resistance increases, and the volume is reduced or turned off.

[0055] In order to prevent the sudden increase in volume caused by random volume adjustment and the impact on the audience's hearing, the power to the electromagnet 140 is cut off. At this time, the gear 2 320 can move downward along the fixed plate 1 340 under the action of its own gravity, and does not engage with the gear 1 310 and the rack 330. As a result, the volume cannot be adjusted by turning the knob 120, which ensures that the volume is fixed and plays a secondary protection role.

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

[0057] The present application achieves volume adjustment by placing an inclined support plate 210 in the speaker body 100 and embedding a resistor 211 therein, and connecting the roller 230 to the resistor 211 by moving it; the piston block 222 is connected to the 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 roller 230 automatically returns to its original position after power failure by utilizing the magnetic attraction of the magnet 1 240, thereby turning off the volume, solving the problem that the volume cannot be automatically turned off after power failure; the valve 250 is controlled to open and close by the electromagnet 2 150, and negative pressure is used to fix the position of the piston block 222 (that is, the position of the roller 230 is fixed, thereby controlling the resistance value of the resistor 211), thereby fixing the volume.

[0058] Through the cooperation of magnet 1 240 and roller 230, the volume is automatically turned off after power failure, which prevents the speaker from maintaining a high volume after power failure, protects the sound-generating components inside the speaker, and extends its service life; through the cooperation of the gear rack and the negative pressure state in the piston cylinder 220, the volume is accurately adjusted and fixed, avoiding fluctuations and instability during the volume adjustment process; through the cooperation of electromagnet 1 140 and gear 2 320, the volume adjustment function is locked under specific circumstances (such as after power failure), preventing the sudden increase in volume due to misoperation, and protecting the audience's hearing health; through precise volume adjustment and automatic protection functions, the user experience and satisfaction when using the speaker are improved; the technical effects of automatic volume zeroing, improved volume adjustment stability, improved volume adjustment accuracy, avoidance of damage to human hearing, and increased service life of the speaker are achieved.

[0059] Embodiment 2: In order to improve the positioning effect of the piston block 222 by the negative pressure effect, and thereby improve the contact stability between the roller 230 and the resistor 211, the present application proposes the following technical solutions to address the above technical problems, specifically:

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

[0061] The rigid layer 225 is an arc-shaped structure, two of which are arranged on the left and right, and is made of a hard material; the flexible layer 224 is an arc-shaped structure, made of a flexible rubber material, two of which are arranged on the top and bottom, and are fixed between the two rigid layers 225 respectively.

[0062] The present application designs the inner wall of the piston cylinder 220 into a curved structure, and includes a combination of a flexible layer 224 and a rigid layer 225. When the volume adjustment position is fixed, when 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 (the valve 250 is closed) will cause the flexible layer 224 to deform, thereby squeezing the piston block 222 and hindering its movement, thereby enhancing the fixity of the position of the piston block 222 and improving the accuracy of volume positioning.

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

[0064] At the same time, the rigid layer 225 is made of a hard material, which provides necessary structural support for the piston cylinder 220 and ensures its stability and durability during use; the flexible layer 224 is made of a flexible rubber material, which not only has good elastic deformation ability, but also can absorb and disperse external impact force to a certain extent, further protecting the stability of the piston block 222 and the entire volume adjustment mechanism.

[0065] Embodiment 3: In order to further improve the positioning accuracy of the piston block 222 and thereby improve the stability of the volume after adjustment, the present application proposes the following technical solutions to address the above technical issues, specifically:

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

[0067] The present application provides a clear reference point or positioning point for the piston block 222 by fixing the small ball 223. When the interior of the piston cylinder 220 is in a negative pressure state, 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 more accurately fixed, reducing the slight movement of the piston block 222 during the positioning process, thereby significantly improving the accuracy of volume positioning.

[0068] Furthermore, as part of piston block 222, ball 223's fixed position and shape can be precisely controlled during the manufacturing process, helping to reduce system errors and uncertainties. The use of flexible layer 224 to wrap ball 223 increases the contact area and friction between piston block 222 and piston cylinder 220, further improving system stability and reliability. When volume adjustment is required, piston block 222 responds more quickly to rotation of knob 120 because ball 223 provides a clear force transfer point, allowing force to be applied more directly to piston block 222, enhancing the speed of volume positioning.

[0069] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An outdoor portable intelligent speaker, comprising a speaker body (100), a speaker (110), a knob (120) and a support leg (130), characterized in that: A playback unit is provided inside the audio body (100), and the playback unit includes a conduction component (200) and an adjustment component (300); The conduction component (200) is fixed inside the speaker body (100) and is provided with an obliquely arranged resistor sheet (211) and a magnet (240). The length of the resistor sheet (211) actually conducted is changed by means of a knob (120), thereby changing the resistance value of the resistor sheet (211), thereby achieving volume adjustment. In the case of power failure, the length of the resistor sheet (211) actually conducted is changed by means of the magnetic attraction of the magnet (240), and the resistance value is conducted to a maximum value, thereby achieving volume turning off. The adjustment component (300) is arranged below the conduction component (200) and is used to cooperate with the conduction component (200) to adjust the volume.

2. The outdoor portable smart speaker according to claim 1, characterized in that: The conducting assembly (200) includes a support plate (210), a piston cylinder (220), a roller (230) and a magnet (240); The support plate (210) is an L-shaped structure, placed at an angle, and fixed in the speaker body (100); a resistor (211) is embedded in the support plate (210), and a magnet (240) is fixed to the vertical section of the support plate (210); the resistor (211) is a long strip structure; the piston cylinder (220) is fixed to the right end of the support plate (210) and is located above the resistor (211); a piston block (222) is slidably connected to the piston cylinder (220) via a piston rod (221); a roller (230) is fixed to the left end of the piston rod (221) via a connecting frame (231); the roller (230) is slidably connected to the resistor (211) and is used to contact the resistor (211) and realize the power supply and conduction of the circuit.

3. The outdoor portable smart speaker according to claim 2, characterized in that: The connecting frame (231) is made of iron and is used to cooperate with the magnet (240). Through the magnetic attraction, the roller (230) is driven to move downward along the support plate (210) and automatically return to its original position, thereby realizing the automatic turning off of the volume of the audio body (100) after use.

4. The outdoor portable smart speaker according to claim 1, characterized in that: The speaker (110) is fixed to the audio body (100) via a conducting end (111) and is connected to an external power source via an electric wire.

5. The outdoor portable smart speaker according to claim 2, characterized in that: The roller (230) is connected to the conducting end (111) of the speaker (110) via the output line (102), and the right end of the resistor (211) is connected to the conducting end (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.

6. The outdoor portable smart speaker according to claim 1, characterized in that: The adjustment assembly (300) includes a gear 1 (310), a gear 2 (320), a rack (330), a fixing plate 1 (340) and a fixing plate 2 (350); the gear 1 (310) is fixed to the bottom of the knob (120) via a rotating shaft (121); the fixing plate 1 (340) is fixed to the top of the interior of the sound body (100) for supporting the gear 2 (320); the gear 2 (320) is slidably connected to the fixing plate 1 (340) via a U-shaped frame (341); the gear 2 (320) is fixed to the bottom of the knob (120) via a rotating shaft (121); the fixing plate 1 (340) is fixed to the top of the interior of the sound body (100) for supporting the gear 2 (320); the gear 2 (320) is slidably connected to the fixing plate 1 (340) via a U-shaped frame (341); the gear 2 (32 0) is rotatably connected to the U-shaped frame (341) through a rotating shaft; the second fixing plate (350) is fixed to the top of the interior of the sound body (100) and is located in front of the first fixing plate (340), and is used to provide a moving track for the rack (330); the rack (330) is slidably connected in the second fixing plate (350) and is engaged with the second gear (320); the rack (330) is fixedly connected to the connecting frame (231) through a connecting rod (331), and is used to drive the piston rod (221) to move through transmission, thereby adjusting the volume.

7. The outdoor portable smart speaker according to claim 6, characterized in that: An electromagnet 1 (140) is fixed to the top of the interior of the audio body (100); the top of the U-shaped frame (341) is made of iron, and generates magnetism after the electromagnet 1 (140) is energized. The U-shaped frame (341) drives the gear 2 (320) to move upward along the fixed plate 1 (340) through magnetic attraction, and engages with the gear 1 (310) and the rack (330), and then the volume is adjusted by turning the knob (120).

8. The outdoor portable smart speaker according to claim 2, characterized in that: The rear end of the piston cylinder (220) is connected to the valve (250) through a torsion spring. The rear end of the piston cylinder (220) is fixed with an electromagnet 2 (150) that cooperates with the valve (250). The opening and closing of the piston cylinder (220) is realized by magnetic attraction. During the volume adjustment process, the electromagnet 2 (150) is powered off, and the valve (250) automatically falls under its own gravity and the action of the torsion spring, so that the air in the piston cylinder (220) is discharged from the valve (250). When the volume adjustment is completed, the electromagnet 2 (150) is powered on and cooperates with the valve (250) to realize the closing of the piston cylinder (220). At this time, the interior of the piston cylinder (220) is in a negative pressure state, and the positioning of the piston block (222) is realized by the negative pressure action, thereby realizing the fixed position after the volume adjustment.

9. The outdoor portable smart speaker according to claim 8, characterized in that: The inner wall of the piston cylinder (220) is a curved structure and is divided into two parts, including a flexible layer (224) and a rigid layer (225); The rigid layer (225) is an arc-shaped structure, two of which are arranged on the left and right, and is made of a hard material; the flexible layer (224) is an arc-shaped structure, made of a flexible rubber material, two of which are arranged on the top and bottom, and respectively fixed between the two rigid layers (225).

10. The outdoor portable smart speaker according to claim 9, characterized in that: The piston block (222) is a spherical structure and a small ball (223) is fixed to its right end. When the piston cylinder (220) is in a negative pressure state, the flexible layer (224) is concave toward the axis of the piston cylinder (220) under the action of the negative pressure and wraps the small ball (223), thereby improving positioning accuracy.

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