Bluetooth sound box and audio playing system

Abstract

The utility model relates to the technical field of audio playing equipment, and discloses a Bluetooth sound box and an audio playing system, the Bluetooth sound box comprises a shell, a loudspeaker assembly and an electric control assembly, the shell is provided with a bottom shell and a face shell, the face shell is provided with a first installation cavity, and the surface of the face shell is provided with a sound outlet net; the surface shell and the bottom shell are fixedly connected, and a second mounting cavity is defined by the surface shell and the bottom shell; the loudspeaker assembly is arranged in the first mounting cavity, and a sound outlet of the loudspeaker assembly is adjacent to the sound outlet net; the electric control assembly is arranged on the second installation cavity and electrically connected with the loudspeaker assembly, a first Bluetooth module is arranged in the electric control assembly, and the electric control assembly is connected with the audio playing device through the first Bluetooth module so that noise can be reduced by reducing the audio transmission distance. According to the utility model, the built-in Bluetooth module is directly connected with the audio equipment, physical distance loss in an audio signal transmission process is reduced, environmental noise interference is reduced, and the audio signal transmission device has the advantages of simple structure and capability of reducing noise propagation influence without complex hardware.

Description

Technical Field

[0001] This utility model belongs to the technical field of audio playback devices, specifically relating to a Bluetooth speaker and audio playback system. Background Technology

[0002] With the widespread adoption and development of audio playback devices, televisions, projectors, and stereos have become indispensable parts of people's daily lives. However, while providing a high-quality audio experience, these devices also bring significant noise pollution problems, especially in indoor environments. Because sound attenuates more slowly with distance as it travels through the air, noise can have a wide impact range, potentially disturbing others' work, rest, and even health.

[0003] Currently, common noise reduction technologies mainly focus on active noise cancellation (ANC) and passive sound insulation (such as sound-absorbing materials). However, these solutions typically require complex hardware designs or additional acoustic processing, resulting in high costs and limited applicability to ordinary consumer audio devices. Furthermore, most existing technologies focus on optimizing sound quality or reducing noise generation from the sound source itself, lacking solutions that reduce noise impact by intelligently adjusting the audio propagation distance.

[0004] Therefore, there is an urgent need for a technical solution that can effectively reduce the noise propagation distance by optimizing the audio propagation path or dynamically adjusting the audio output method without relying on complex hardware or environmental modifications, so as to improve the user experience and reduce noise interference to the surrounding environment. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a Bluetooth speaker and audio playback system, which solves the problem that existing technologies focus on optimizing sound quality or reducing noise generation from the sound source itself, but lack the ability to reduce noise impact by intelligently adjusting the audio propagation distance.

[0006] The technical effects to be achieved by this utility model are realized through the following aspects:

[0007] In a first aspect, this utility model provides a Bluetooth speaker, comprising:

[0008] The housing includes a bottom shell and a top shell. The top shell has a first mounting cavity and a sound outlet mesh on its surface. The top shell is fixedly connected to the bottom shell, and the top shell and the bottom shell together form a second mounting cavity.

[0009] A speaker assembly is disposed in the first mounting cavity, and the sound outlet of the speaker assembly is disposed adjacent to the sound outlet mesh;

[0010] And an electronic control component, disposed on the second mounting cavity and electrically connected to the speaker assembly, wherein the electronic control component has a built-in first Bluetooth module and is connected to the audio playback device through the first Bluetooth module, so as to reduce noise by reducing the audio propagation distance.

[0011] In some optional implementations, the bottom shell is in the shape of a triangular prism, with an opening on one side. The front shell is installed at the opening of the bottom shell, and the angle between the sound outlet mesh and the bottom surface of the bottom shell is an acute angle.

[0012] In some optional implementations, the bottom shell opening is provided with at least one limiting groove and at least one snap-fit ​​protrusion, and the front shell is provided with a limiting element and a snap-fit ​​groove; when the front shell is installed on the bottom shell, after the limiting element and the limiting groove are limited, the snap-fit ​​protrusion is snapped into the snap-fit ​​groove for installation.

[0013] In some optional implementations, a mounting plate is provided on the inner side of the face shell, and the mounting plate and the face shell enclose a first mounting cavity, and a first through hole for the wire harness to pass through is provided at the bottom of the mounting plate.

[0014] In some optional implementations, the second mounting cavity is provided with a first mounting portion and a second mounting portion, the second mounting portion being spaced apart above the first mounting portion; the electronic control assembly includes a control board and a battery module, the control board being mounted on the first mounting portion and the battery module being mounted on the second mounting portion; the control board is electrically connected to the battery module and the speaker assembly via a connecting wire harness.

[0015] In some optional implementations, the faceplate is further provided with a signal input module, the signal input module including a signal plate disposed in the first mounting cavity, the signal plate being provided with a control knob and / or control button protruding from the surface of the faceplate, the signal plate being electrically connected to the control plate; the signal plate is also provided with a signal lamp, the light source of the signal lamp being projected outward through a signal hole located on the surface of the faceplate.

[0016] In some optional implementations, the upper end of the bottom shell is provided with a first through groove, and the top shell is provided with a second through groove that matches the first through groove. When the top shell is installed on the bottom shell, the first through groove and the second through groove communicate to form a lifting handle.

[0017] In some alternative implementations, a headphone jack is also included, one end of which is electrically connected to the electronic control component, and the other end of which is disposed on the side of the bottom housing.

[0018] In some optional implementations, a wrapping member is also provided on the side of the bottom shell. The wrapping member is detachably connected to the bottom shell and is disposed adjacent to the headphone jack. The wrapping member includes a connecting part and a limiting part connected to the connecting part. The projected area of ​​the limiting part on the side of the bottom shell is larger than the projected area of ​​the connecting part.

[0019] In a first aspect, this utility model provides an audio playback system, comprising:

[0020] The audio playback device is equipped with a second Bluetooth module.

[0021] And the aforementioned Bluetooth speaker, which communicates with the audio playback device via a first Bluetooth module and a second Bluetooth module to reduce noise by decreasing the audio propagation distance.

[0022] In summary, this utility model has at least the following advantages: The Bluetooth speaker provided by this utility model includes a shell, a speaker assembly, and an electronic control assembly. The shell has a bottom shell and a top shell. The top shell has a first mounting cavity and a sound-emitting mesh on its surface. The top shell and the bottom shell are fixedly connected, and the top shell and the bottom shell together form a second mounting cavity. The speaker assembly is disposed in the first mounting cavity, and the sound outlet of the speaker assembly is adjacent to the sound-emitting mesh. The electronic control assembly is disposed on the second mounting cavity and electrically connected to the speaker assembly. The electronic control assembly has a built-in first Bluetooth module and is connected to an audio playback device through the first Bluetooth module to reduce noise by reducing the audio propagation distance. This utility model directly connects to the audio device through the built-in Bluetooth module, reducing the physical distance loss during audio signal transmission, thereby reducing environmental noise interference. It has the advantages of simple structure and reducing the impact of noise propagation without complex hardware. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a Bluetooth speaker according to an embodiment of the present invention.

[0024] Figure 2 This is a side sectional view of a Bluetooth speaker according to an embodiment of the present invention.

[0025] Figure 3 This is a first exploded view of the Bluetooth speaker according to an embodiment of the present invention.

[0026] Figure 4 This is a second exploded view of the Bluetooth speaker according to an embodiment of the present invention.

[0027] Marked in the image:

[0028] 1. Shell;

[0029] 11. Bottom shell; 111. Second mounting cavity; 112. First mounting part; 113. Second mounting part; 114. First through groove; 115. Snap-fit ​​protrusion; 116. Limiting groove;

[0030] 12. Faceplate; 121. First mounting cavity; 122. Sound grille; 123. Signal hole; 124. Second through slot; 125. Slot;

[0031] 13. Mounting plate;

[0032] 2. Speaker assembly;

[0033] 3. Electronic control components; 31. Control board; 32. Battery module;

[0034] 4. Signal input module; 41. Signal board; 42. Control knob;

[0035] 5. Winding component; 51. Connecting part; 52. Limiting part;

[0036] 6. Headphone jack;

[0037] 7. Pull handle. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] Example 1:

[0041] Please see the appendix Figure 1-4 To address the aforementioned problems, this utility model provides a Bluetooth speaker, comprising a housing 1, a speaker assembly 2, and an electronic control assembly 3. The housing 1 includes a bottom shell 11 and a front shell 12. The front shell 12 has a first mounting cavity 121 and a sound outlet grille 122. The front shell 12 is connected to the bottom shell 11 to form a second mounting cavity 111. The speaker assembly 2 is disposed in the first mounting cavity 121, with its sound outlet adjacent to the sound outlet grille 122. The electronic control assembly 3 is disposed in the second mounting cavity 111, has a built-in Bluetooth module, and is electrically connected to the speaker assembly 2, communicating with external devices via the Bluetooth module.

[0042] The housing 1 refers to the combined structure comprising a bottom shell 11 and a front shell 12. Specifically, it can be designed as a separate unit using injection molding, with the bottom shell 11 and front shell 12 secured by clips or screws. This structure separates the sound-generating unit and electronic components into independent cavities, preventing vibration from interfering with circuit stability. The speaker assembly 2 is a module containing the sound-generating unit, which can be implemented using a moving-coil speaker. Its sound outlet is directly aligned with the sound outlet mesh 122 of the front shell 12, allowing sound waves to be output without a complex transmission path. The electronic control assembly 3 is an integrated unit containing signal processing circuitry and a Bluetooth communication module. Specifically, it can integrate a Bluetooth chip and power management circuitry on a PCB board, replacing traditional wired transmission with wireless connectivity to reduce signal attenuation.

[0043] Specifically, the dual-cavity structure formed by the front shell 12 and the bottom shell 11 physically isolates the sound-generating unit from the electronic components, preventing electromagnetic interference from affecting audio signal quality. The sound outlet of the speaker assembly 2 is adjacent to the sound outlet mesh 122, allowing sound waves to be directly transmitted to the external environment, shortening the propagation path. The electronic control assembly 3 has a built-in Bluetooth module that establishes a direct connection channel with external devices. After digital processing, the audio signal directly drives the speaker assembly 2, eliminating the signal loss caused by transmission through cables in traditional solutions. This end-to-end short-range transmission system achieves a physical reduction in the sound wave propagation path and simplification of the signal transmission link through the combination of structural optimization and wireless communication.

[0044] Compared with existing technologies, traditional speakers typically integrate electronic components and the sound-generating unit into the same cavity, which easily generates electromagnetic interference and prolongs the sound wave reflection path. This solution, however, avoids interference during signal transmission and optimizes the sound wave output path through a separate cavity design and wireless direct connection. Common noise reduction solutions in existing technologies require the addition of sound-absorbing materials or active noise-canceling circuits, while this solution achieves noise reduction through physical means of shortening the propagation distance, without requiring complex hardware modifications.

[0045] Through the above technical solutions, this utility model can reduce interference and attenuation of audio signals during transmission, while shortening the propagation path of sound waves from the sound-generating unit to the outside world. The split cavity structure reduces the mutual influence between electronic components and the sound-generating unit, the Bluetooth direct connection eliminates the introduction of noise from wired transmission, and the adjacent arrangement of the sound outlet mesh 122 and the sound outlet avoids multiple reflections of sound waves within the cavity. These technical means work together to make noise attenuate more quickly during propagation, thereby reducing interference with the surrounding environment.

[0046] The present invention further proposes that the bottom shell 11 is in the shape of a triangular prism and has an opening on one side, the front shell 12 is installed at the opening of the bottom shell 11, and the included angle between the sound outlet mesh 122 and the bottom surface of the bottom shell 11 is an acute angle.

[0047] The triangular prism shape refers to a geometric structure with a triangular cross-section and three planar sides. Specifically, it can be achieved using a prism structure with an equilateral triangular cross-section, where the three planes form a sound wave reflecting surface. The opening design means that one side of the triangular cross-section of the bottom shell 11 is completely open. This opening structure can be formed through a molding process and is used to determine the mounting direction of the front shell 12. An acute angle refers to a tilt angle of less than 90 degrees between the plane containing the sound mesh 122 and the bottom surface of the bottom shell 11. This can be achieved by adjusting the mounting angle of the front shell 12, for example, using a tilt angle within the range of 15 to 75 degrees. By making the angle between the sound mesh 122 and the bottom surface of the bottom shell 11 an acute angle, the Bluetooth speaker has a larger surface area facing the user, which can further improve audio transmission performance.

[0048] Specifically, the triangular prism structure of the base shell 11 forms a stable triangular support surface when placed horizontally, and two of the three sides form a plane for reflecting sound waves with the support surface. The face shell 12 installed on the open side is set at an acute angle so that the sound outlet mesh 122 faces obliquely upward. When sound waves are emitted from the speaker assembly 2, the sound waves first contact the two reflective sides of the base shell 11, and after reflection, they superimpose with the directly emitted sound waves on the open side, generating an upward-sloping composite sound wave propagation path. This propagation path concentrates the sound wave energy to the user's location, avoiding direct horizontal diffusion or downward propagation of sound waves that impact the ground and generate secondary reflection noise, thereby shortening the straight-line distance for the effective sound waves to reach the target area.

[0049] Compared with existing technologies, traditional speakers often use a rectangular shell structure 1, which results in sound waves spreading uniformly in all directions. While cylindrical shells 1 have reflective surfaces, they lack directional control. This invention establishes a synergistic effect between two reflective surfaces and the opening side through a triangular prism structure, which, together with the inclined sound outlet mesh 122, forms a composite sound field. This achieves active control of the sound wave propagation path while maintaining structural stability.

[0050] Through the above technical solution, this utility model achieves precise control of the sound wave propagation direction, concentrating sound energy to the target area and reducing ineffective sound wave diffusion in non-target areas, thereby reducing the intensity of environmental noise interference. This structural design achieves optimized sound field distribution without the need for additional active noise cancellation components, solving the noise pollution problem caused by the disordered diffusion of sound waves in traditional speakers.

[0051] This invention further proposes that the bottom shell 11 has at least one limiting groove 116 and at least one snap-fit ​​protrusion 115 at its opening, and the front shell 12 has a limiting element and a snap-fit ​​groove 125. When the front shell 12 is installed on the bottom shell 11, after the limiting element and the limiting groove 116 complete the limiting, the snap-fit ​​protrusion 115 snaps into the snap-fit ​​groove 125 to achieve a fixed installation. The limiting groove 116 refers to a recessed structure formed at the edge of the opening of the bottom shell 11, which can be a U-shaped groove or a T-shaped groove, used to form a geometric constraint with the limiting element. The snap-fit ​​protrusion 115 refers to an elastic boss extending from the opening of the bottom shell 11, which can be injection molded from polycarbonate material, and the top of the protrusion can be provided with a barb structure to enhance the snap-fit ​​strength. The limiting element refers to a protrusion provided at the edge of the front shell 12, which can be a rectangular protrusion with a shape complementary to the limiting groove 116, used to limit the lateral displacement of the front shell 12. The slot 125 refers to the groove opened on the inner side of the face shell 12. Specifically, it can adopt a through-type groove structure, with a guide slope set on the inner wall of the groove to guide the snap-fit ​​protrusion 115 to slide in.

[0052] Specifically, during installation, the limiting component first embeds into the limiting groove 116, axially positioning the front shell 12 and the bottom shell 11 and eliminating positional deviations in the assembly direction. Then, vertical pressure is applied to cause the snap-fit ​​protrusion 115 to elastically deform and slide into the snap-fit ​​groove 125. The barb structure forms an interference fit with the inner wall of the snap-fit ​​groove 125, creating a mechanical interlocking effect. This dual locking mechanism, by constraining the displacement degrees of freedom step by step, ensures complete contact between the acoustic cavity sealing surfaces of the front shell 12 and the bottom shell 11, while avoiding stress concentration caused by single-point fixing. During disassembly, only a reverse force greater than the elastic deformation threshold needs to be applied to the snap-fit ​​protrusion 115 to release the lock, achieving tool-free rapid assembly and disassembly.

[0053] Compared with existing technologies, the traditional assembly of the housing 1 relies on tightening threaded fasteners one by one, requiring multiple adjustments and taking a long time. This solution, through the synergistic effect of limiting and locking, combines the positioning and fixing steps into a single action, reducing assembly time by approximately 60%. In existing technologies, misalignment between the positioning pin and the screw hole can easily lead to misalignment of the housing 1, while the geometric constraints of the limiting groove 116 and the limiting component can control the assembly accuracy within ±0.5 mm.

[0054] Through the above technical solution, this utility model effectively solves the problem of accumulated positional deviation during the assembly process of the housing 1, achieving millimeter-level assembly precision control. Simultaneously, the elastic snap-fit ​​structure replaces the traditional threaded connection method, allowing disassembly and assembly operations to be completed within 10 seconds without special tools, significantly improving maintenance efficiency. This structural design also avoids thread wear caused by repeated disassembly and assembly, extending the service life of the connecting part 51 of the housing 1.

[0055] The present invention further proposes to provide an installation plate 13 on the inner side of the face shell 12, the installation plate 13 and the face shell 12 enclose to form a first installation cavity 121, and the bottom of the installation plate 13 is provided with a first through hole for the wire harness to pass through.

[0056] The mounting plate 13 refers to a plate-shaped support structure connected to the inner wall of the housing 12. It can be made of injection-molded metal or engineering plastic sheet. Its function is to provide a physical isolation boundary for the second mounting cavity 111 and to support the electronic control component 3. The second mounting cavity 111 is a sealed space formed by the mounting plate 13 and the inner wall of the housing 12. It can be formed by injection molding a cavity with a snap-fit ​​structure. Its function is to isolate the electronic control component 3 from the speaker assembly 2 to optimize the electromagnetic environment. The first through hole is a channel penetrating the bottom of the mounting plate 13 and having a smooth inner wall. It can be a circular hole with a diameter ranging from 3 to 5 mm. Its function is to provide a directional passage for the wiring harness connecting the speaker assembly 2 and the electronic control component 3.

[0057] Specifically, the mounting plate 13 is integrally formed with the inner wall of the housing 12 through injection molding, creating an independent cavity between the housing 12 and the mounting plate 13 for mounting the electronic control component 3. The wiring harness, after exiting the speaker assembly 2, passes through the first through hole into the second mounting cavity 111 and is constrained within a fixed path inside the through hole. Due to the isolation effect of the mounting plate 13, the electromagnetic interference generated by the electronic control component 3 is limited within the second mounting cavity 111, and the wiring harness's path is confined within the through hole channel, preventing contact and friction with other components within the cavity.

[0058] Compared with existing technologies, traditional Bluetooth speakers typically use an open wiring method for their internal wiring harnesses, directly exposing the wires inside the cavity, leading to signal crosstalk and complex assembly processes. This invention, however, uses a mounting plate 13 to form an independent cavity structure, forcing the wiring harness to be oriented through pre-set through holes, eliminating disorderly tangling of the wires. Existing technologies do not disclose a technical means to simultaneously solve the problems of electromagnetic interference and assembly efficiency by using mechanical structures to limit the wiring harness path.

[0059] Through the above technical solution, this utility model solves the signal interference problem caused by the chaotic internal wiring harness layout of Bluetooth speakers. It also allows for positioning and installation of the wiring harness without manual adjustment during assembly, shortening assembly time. Electromagnetic interference is confined within an independent cavity, preventing high-frequency signals from affecting audio transmission quality. The vibration amplitude of the wiring harness is reduced due to the constraint of the through-holes, thereby lowering the risk of poor contact caused by wire swaying.

[0060] This utility model further proposes that the second mounting cavity 111 is provided with a first mounting part 112 and a second mounting part 113, and the second mounting part 113 is spaced above the first mounting part 112; the electronic control component 3 includes a control board 31 and a battery module 32, the control board 31 is mounted on the first mounting part 112, and the battery module 32 is mounted on the second mounting part 113; the control board 31 is electrically connected to the battery module 32 and the speaker assembly 2 through a connecting wire harness.

[0061] The first mounting section 112 refers to the support structure located at the bottom of the cavity, which can be implemented using an injection-molded boss structure. It supports the control board 31 and forms a physical isolation between it and the battery module 32. The second mounting section 113 refers to the support platform set above the first mounting section 112, which can be implemented using a metal bracket welded to the inner wall of the cavity. Its spacing height can be adjusted to accommodate battery modules 32 of different specifications. The control board 31 refers to the core circuit board integrating the Bluetooth module and the signal processing unit. It can be implemented using a four-layer PCB board stacked structure and is securely connected to the first mounting section 112 through positioning posts. The battery module 32 refers to the energy storage unit containing lithium-ion cells. It can be implemented using an encapsulation structure with a thermal adhesive layer. Its bottom surface contacts the second mounting section 113 through thermally conductive silicone grease. The connecting harness refers to a multi-core cable with a shielding layer. It can be implemented using a stranded wire structure. The wire length is set according to the spacing of the mounting sections to keep the wiring straight.

[0062] Specifically, within the second mounting cavity 111, the first mounting portion 112 and the second mounting portion 113 form a vertically distributed load-bearing space. The control board 31 is fixed to the bottom first mounting portion 112, maintaining the shortest straight-line distance from the speaker assembly 2 of the cavity bottom shell 11, thus shortening the audio signal transmission path. The battery module 32 is independently mounted on the top second mounting portion 113, forming a vertical physical separation from the control board 31. The heat generated by the battery module 32 is conducted to the outer wall of the cavity through the metal bracket of the second mounting portion 113, preventing heat accumulation from affecting the operation of the control board 31. The connecting harness extends vertically from the second mounting portion 113 to the first mounting portion 112, its length limited to just meet the connection requirements, and the harness runs parallel to the edge of the cavity to avoid crossing and tangling. The electrical connection between the control board 31 and the battery module 32 is completed through a shielded harness, and the metal braided mesh covering the outer layer of the harness can block electromagnetic radiation interference.

[0063] Compared with existing technologies, traditional Bluetooth speakers typically arrange the control board 31 and battery module 32 side-by-side on the same plane, leading to increased temperature rise and electromagnetic interference in the circuit area. This solution, through a vertically layered layout, keeps the high-current battery module 32 away from sensitive control circuits, while utilizing underutilized space in the cavity's height direction. In existing technologies, the wiring harness connecting the battery and control board 31 often needs to wind around the inner wall of the cavity, easily creating wiring redundancy and introducing interference noise. This solution, however, maintains the shortest straight connection path for the wiring harness by precisely calculating the spacing between mounting parts.

[0064] Through the above technical solutions, this utility model achieves a rational layout of the electronic control component 3 in three-dimensional space. The heat generated by the battery module 32 is discharged through an independent heat dissipation path, avoiding thermal coupling with the control board 31. The signal transmission distance between the control board 31 and the speaker assembly 2 is shortened, effectively reducing signal attenuation and line interference noise. The standardized layout of the connecting harness eliminates parasitic capacitance caused by line crossings, reducing the impact of electromagnetic interference on the audio signal. The layered structural design improves the utilization rate of the internal space of the cavity and provides physical isolation conditions for heat dissipation and electromagnetic shielding of each functional module.

[0065] This utility model further proposes to set a signal input module 4 on the face shell 12. The signal input module 4 includes a signal plate 41 set in the first mounting cavity 121. The signal plate 41 is provided with a control knob 42 and / or control button protruding from the surface of the face shell 12. The signal plate 41 is electrically connected to the control plate 31. The signal plate 41 is also provided with a signal light. The light source of the signal light is projected outward through the signal hole 123 located on the surface of the face shell 12.

[0066] The control knob 42 is a rotary input device used to adjust volume or switch functions. It can be implemented as a metal knob with an encoder, generating an electrical signal through changes in rotation angle. The signal hole 123 is a light-transmitting hole structure on the surface of the housing 12, specifically a circular through-hole with a diameter of 0.5-2mm, used to limit the angle of light scattering. The signal board 41 is a printed circuit board integrating the control circuit and the signal light carrier, specifically implemented using a double-sided FR4 substrate, with the control knob 42 and the signal light fixed by soldering. The control button is a push-button input device that triggers the switching function, specifically a combination of a silicone button and a membrane switch, generating a control signal through contact conduction.

[0067] Specifically, the signal board 41 is installed inside the first mounting cavity 121 and electrically connected to the control board 31 via a ribbon cable or connector, allowing control commands generated by the user's operation of the control knob 42 or buttons to be directly transmitted to the control board 31 for processing. An indicator light is soldered to the surface of the signal board 41, its light emission direction aligned with the axis of the signal hole 123. When the indicator light is activated, the light passes through the signal hole 123 to form a focused beam projected onto the outer surface of the housing 12, preventing diffuse reflection within the cavity from interfering with other electronic components. The rotation axis of the control knob 42 passes through a pre-drilled mounting hole on the surface of the housing 12 and is axially positioned via a snap-fit ​​structure, ensuring no axial displacement occurs during rotation. The silicone cap of the control button protrudes from the surface of the housing 12, driving a membrane switch to generate a trigger signal when pressed, while simultaneously utilizing the elastic restoring force of the silicone material for automatic reset.

[0068] Compared with existing technologies, traditional Bluetooth speakers typically use external control panels or touchscreens to achieve interactive functions, requiring an additional independent housing 1 and connecting wiring harness, which increases structural complexity. Furthermore, existing technologies using status indicator lights often suffer from misidentification due to light scattering or require the addition of a light guide structure. This solution reuses the spatial layout of the first mounting cavity 121, integrating the signal board 41 within the cavity containing the speaker assembly 2. The solid structure of the housing 12 simultaneously carries the control elements and light guiding function, achieving interactive control and status feedback while avoiding the need for an additional independent mounting structure.

[0069] Through the above technical solution, this utility model achieves integrated operation control and status indication functions. Users can adjust the volume or switch modes by rotating or pressing the control elements on the surface of the housing 12. At the same time, they can intuitively obtain working status information by observing the light source color or flashing frequency of the signal hole 123. Since the signal input module 4 reuses the original cavity space and housing 1 structure, there is no need to add an independent control panel or external light guide component. While ensuring ease of operation and visual feedback, the overall structure of the device remains compact, reducing assembly complexity and maintenance costs.

[0070] This utility model further proposes that a first through groove 114 be provided at the upper end of the bottom shell 11, and a second through groove 124 be provided on the top shell 12 that matches the first through groove 114. When the top shell 12 is installed on the bottom shell 11, the first through groove 114 and the second through groove 124 are connected to form a lifting handle 7. The first through groove 114 refers to the opening structure through the side wall at the upper end of the bottom shell 11. Specifically, it can be implemented using a rectangular or arc-shaped groove reserved during the injection molding of the bottom shell 11. This through groove reduces the overall weight by reducing material usage, while providing space for fingers to accommodate the lifting operation. The second through groove 124 refers to the corresponding opening that forms a continuous through groove after the edge of the top shell 12 is assembled with the bottom shell 11. Specifically, it can be implemented using a U-shaped structure with the edge of the top shell 12 recessed inward. The matching design of this through groove and the first through groove 114 ensures that a smooth, protruding through channel is formed after assembly, avoiding discomfort when gripping.

[0071] Specifically, during assembly, the edges of the through slots of the bottom shell 11 and the top shell 12 are precisely aligned using a positioning structure to form a lifting channel that runs through the shell 1. This channel utilizes the shell 1's own structure to provide a gripping space for the fingers, eliminating the need for an additional handle component on the outside of the shell 1. The symmetrical distribution of the through slots ensures that the shell 1 is subjected to uniform stress, avoiding structural deformation caused by localized stress concentration. The lifting channel is positioned at the top edge of the shell 1, conforming to the natural grip angle of the palm, while avoiding the mounting areas of the internal speaker assembly 2 and electronic control assembly 3, ensuring that acoustic performance is not affected.

[0072] Compared to existing technologies, traditional Bluetooth speakers typically use external plastic handles or metal hooks for portability. These separate components not only increase the overall size but are also prone to breakage due to frequent stress. This solution integrates the lifting function with the speaker body structure through the coordinated design of the through-slot in the housing 1, maintaining a compact appearance while avoiding the reliability issues of external components. Furthermore, the symmetrical layout of the through-slot structure enhances the rigidity of the housing 1's edges, providing higher resistance to bending compared to traditional single-side handle designs.

[0073] Through the above technical solution, this utility model achieves an integrated design of the Bluetooth speaker's lifting function and the shell 1 structure, providing portability without the need for additional external components. This solves the problems of increased size and reduced structural strength caused by external handles in traditional solutions. The smooth, continuous design of the grip channel improves user comfort, while the symmetrical layout of the slot structure maintains the overall strength of the shell 1 and extends the product's lifespan.

[0074] Example 2:

[0075] This embodiment is based on embodiment 1. This embodiment further adds a headphone jack 6 to the basis of embodiment 1, and outputs audio to the outside by connecting headphones.

[0076] This invention further proposes that the Bluetooth speaker also includes a headphone jack 6. One end of the headphone jack 6 is electrically connected to the electronic control component, and the other end of the headphone jack 6 is located on the side of the bottom shell 11. The headphone jack 6 refers to a physical connection port capable of transmitting audio signals, specifically a 3.5mm audio jack, used to directly transmit the audio signals output by the electronic control component to an external headphone device. The electrical connection refers to establishing an electrical path through a conductive medium, specifically achieved through soldering or plug-in terminals, ensuring stable transmission of audio signals from the electronic control component to the headphone jack 6. The side of the bottom shell 11 refers to the lateral surface area of ​​the Bluetooth speaker's outer shell, which can be formed into an interface mounting position through openings or insert molding processes, facilitating user operation and avoiding interference with the internal space of the shell 1.

[0077] Specifically, when a user connects external headphones via headphone jack 6, the audio signal output by the electronic control component is directly transmitted to the headphones through a conductive medium, eliminating the need for sound energy conversion by the speaker assembly 2 and thus eliminating noise generated by sound propagation through the air. The headphone jack 6 is located on the side of the bottom shell 11, conforming to ergonomic plugging and unplugging habits while avoiding the reduction in structural strength caused by adding openings in other areas of the shell 1. This solution switches the audio output mode from external speaker mode to wired headphone mode by changing the physical signal transmission path, thereby cutting off the noise propagation path at its source.

[0078] Compared with existing technologies, traditional Bluetooth speakers typically only support wireless audio playback or wireless headphone connection. The sound signal requires multiple conversions and spatial propagation, resulting in uncontrollable noise impact. This solution introduces a wired headphone jack 6, allowing the audio signal to be transmitted directly to the user's ear via cable, shortening the physical distance of the signal transmission link and reducing signal loss and environmental noise radiation in intermediate stages. Furthermore, in existing technologies, the headphone jack 6 is often located on the back or bottom of the housing 1, making plugging and unplugging inconvenient. This solution optimizes the jack location to improve the user experience.

[0079] Through the above technical solution, this utility model can directly suppress the propagation of speaker noise through the physical connection of the wired headphone interface 6 without relying on complex noise reduction circuits or acoustic structures, effectively reducing interference to the surrounding environment. At the same time, users can flexibly choose between speaker or headphone mode according to the usage scenario, achieving private audio playback in quiet environments, thus expanding the application range of Bluetooth speakers.

[0080] This invention further proposes that a winding member 5 is also provided on the side of the bottom shell 11. The winding member 5 is detachably connected to the bottom shell 11 and is arranged adjacent to the headphone interface 6. The winding member 5 includes a connecting part 51 and a limiting part 52 connected to the connecting part 51. The projected area of ​​the limiting part 52 on the side of the bottom shell 11 is larger than the projected area of ​​the connecting part 51. The winding member 5 refers to the physical structure used to store the headphone cable. Specifically, it can be implemented using injection-molded plastic. Its connecting part 51 serves as the supporting body for winding the cable, and the limiting part 52 forms an anti-detachment structure by expanding the lateral area, preventing the wound cable from detaching from the winding area due to external force. The detachable connection between the winding member 5 and the bottom shell 11 can be achieved by screwing a threaded rod. Specifically, the threaded rod refers to a fastening component with threads, which can be implemented using a metal screw or a plastic screw. The winding member 5 is detachably fixed by screwing into a pre-set threaded hole in the bottom shell 11, which facilitates maintenance or replacement. Furthermore, the detachable connection between the wrapping component 5 and the bottom shell 11 can also be achieved through snap-fit ​​fixing. Specifically, a female interface can be provided on the side of the bottom shell, and a male interface can be provided on the wrapping component. The wrapping component 5 and the bottom shell 11 can be detachably connected by snap-fitting the male and female interfaces. By designing the wrapping component and the bottom shell to be detachably connected, the wrapping component can be removed when the Bluetooth speaker is not connected to the headphone cable, thereby reducing the size of the Bluetooth speaker and making it easier to put away and remove.

[0081] The difference in projected area refers to the fact that the coverage area occupied by the limiting part 52 on the plane perpendicular to the side of the bottom shell 11 is larger than that of the connecting part 51. Specifically, this can be achieved by extending the limiting part 52 outward to form a flange or by enlarging the end shape, thus forming a blocking boundary after the wire is wound. In a specific example, the screw rod can be fixed to the positioning part on the side wall of the bottom shell 11 by its rod cap, and the rod body of the screw rod is provided with external threads; the winding part 5 is provided with threaded holes, and the winding part 5 is fixed to the bottom shell 11 by the screw rod.

[0082] Specifically, the winding member 5 is designed to be arranged adjacent to the headphone jack 6, allowing the user to easily wind the cable onto the connector 51 after plugging or unplugging the headphones. The connector 51 provides a base for winding the cable, and its diameter can be set to, for example, 3-5 mm to accommodate the thickness of the headphone cable. The limiting part 52, through its outwardly expanding shape, forms a physical barrier when winding the cable, for example, by adopting a mushroom-shaped structure, with its top diameter increased by 50%-100% compared to the connector 51, effectively preventing the cable from slipping off from the side. The screw fixing method ensures that the winding member 5 remains stable during frequent use, and can also be disassembled by twisting, facilitating the cleaning of dust accumulation between the winding member 5 and the bottom shell 11.

[0083] In some specific embodiments, the connecting part 51 can be designed as a cylinder or prism, and its surface is provided with anti-slip texture to increase the friction with the wire; the limiting part 52 can be set as a disc-shaped or polygonal plate-shaped structure, and its edges are rounded to avoid scratching the wire; the screw rod can be made of stainless steel, and its length is set to 1.2-1.5 times the thickness of the side wall of the bottom shell 11 to ensure the fixing strength.

[0084] Compared with existing technologies, traditional solutions often use simple hooks or slots 125 for wire storage, which suffers from problems such as easy wire slippage and irregular storage shape. This solution, through the coordinated design of the limiting part 52 and the connecting part 51, achieves directional winding and reliable limiting of the wire under the same space occupation conditions. At the same time, the use of a detachable screw rod structure makes maintenance easier than the traditional one-piece molding fixing method.

[0085] Through the above technical solution, this utility model realizes the orderly storage of headphone cables, avoids the tangling and knotting caused by the cables being hung randomly, prevents the cables from being pulled out of the storage position by the extended structure of the limiting part 52, and improves the convenience of maintenance by utilizing the detachable characteristics of the screw rod. It effectively improves the user experience of Bluetooth speakers without increasing the additional storage space.

[0086] Example 3:

[0087] This invention further proposes an audio playback system, including an audio playback device and a Bluetooth speaker. The audio playback device is equipped with a second Bluetooth module, and the Bluetooth speaker is equipped with a first Bluetooth module. The two communicate with each other through the Bluetooth modules to reduce the audio transmission distance and thus reduce noise.

[0088] The audio playback device refers to a terminal device with audio signal output capabilities, specifically a Bluetooth-enabled device such as a mobile phone, tablet, or computer, which transmits signals through a built-in second Bluetooth module. The Bluetooth speaker is an independent device with audio signal reception and playback capabilities, typically a portable speaker structure with a built-in speaker, audio decoding circuitry, and a first Bluetooth module, receiving signals from the audio playback device through the first Bluetooth module. The second Bluetooth module is a wireless transmission unit conforming to the Bluetooth communication protocol standard, specifically implemented using a Bluetooth 5.0 or later chip, used to establish a point-to-point connection with the first Bluetooth module, forming a directional transmission path. The communication connection between the first and second Bluetooth modules refers to a data transmission channel established through the Bluetooth protocol, specifically implemented using Bluetooth Low Energy mode to ensure direct signal transmission within a short range.

[0089] Specifically, the audio playback device sends audio signals to the Bluetooth speaker's first Bluetooth module via the second Bluetooth module. The Bluetooth connection between the two uses a direct connection mode, establishing a stable transmission link within the effective communication range. Because the audio signal is transmitted directly from the playback device to the speaker, the path extension caused by routers or multi-level relay devices in traditional wireless transmission is avoided. The shortened signal propagation path reduces the attenuation time of electromagnetic waves in the air, reducing noise superposition caused by environmental interference during signal transmission. Simultaneously, the point-to-point connection avoids signal delay and distortion caused by multiple devices competing for the channel, further suppressing noise generation. The directional transmission characteristics of the Bluetooth module concentrate signal energy within a limited spatial range, reducing electromagnetic radiation interference to the surrounding environment.

[0090] In addition, the second Bluetooth module of the audio playback device can be plugged into the Bluetooth receiver of the audio playback device for Bluetooth communication between the audio playback device and the Bluetooth speaker. For example, the second Bluetooth module can be plugged into a TV, projector, or other audio playback device, and the Bluetooth speaker can communicate and interact with the second Bluetooth module through the first Bluetooth module, thereby enabling the audio from the audio playback device to be transmitted to the Bluetooth speaker for playback via Bluetooth.

[0091] Compared to existing technologies, traditional audio systems typically use a single Bluetooth module or transmit audio via WiFi networks. This requires signals to travel a long propagation path or be relayed through multiple nodes, making them susceptible to environmental noise and equipment interference. Existing noise reduction solutions often add filters or sound-absorbing structures to the terminal device, increasing hardware complexity. This solution, however, utilizes a short-range direct connection with dual Bluetooth modules, eliminating the need for additional noise reduction circuitry or acoustic processing structures. Noise suppression is achieved simply by optimizing the signal transmission path. Compared to long-distance transmission systems requiring relay equipment, this solution reduces hardware costs while improving signal transmission stability.

[0092] Through the above technical solution, this utility model effectively solves the noise pollution problem caused by long-distance audio signal propagation. By establishing a point-to-point connection between Bluetooth modules, the signal transmission path is shortened, reducing the impact of environmental interference on audio quality. This solution does not rely on complex active noise cancellation circuits or sound-absorbing materials, reducing equipment manufacturing costs and maintenance difficulty, and is suitable for the noise control needs of ordinary consumer-grade audio equipment.

[0093] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0094] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0095] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0096] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0097] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A Bluetooth speaker, characterized in that, include: The housing (1) is provided with a bottom shell (11) and a front shell (12). The front shell (12) is provided with a first mounting cavity (121) and a sound outlet mesh (122) is provided on the surface of the front shell (12). The front shell (12) is fixedly connected to the bottom shell (11) and the front shell (12) and the bottom shell (11) enclose to form a second mounting cavity (111). The speaker assembly (2) is disposed in the first mounting cavity (121) and the sound outlet of the speaker assembly (2) is disposed adjacent to the sound outlet mesh (122); And an electronic control component (3), which is disposed on the second mounting cavity (111) and electrically connected to the speaker assembly (2), wherein the electronic control component (3) has a built-in first Bluetooth module and is connected to the audio playback device through the first Bluetooth module in order to reduce noise by reducing the audio propagation distance.

2. The Bluetooth speaker according to claim 1, characterized in that, The bottom shell (11) is a triangular prism shape, and one side of the bottom shell (11) is open. The front shell (12) is installed at the opening of the bottom shell (11), and the angle between the sound outlet mesh (122) and the bottom surface of the bottom shell (11) is an acute angle.

3. The Bluetooth speaker according to claim 2, characterized in that, The bottom shell (11) is provided with at least one limiting groove (116) and at least one snap-fit ​​protrusion (115) at the opening. The front shell (12) is provided with a limiting member and a snap-fit ​​groove (125). When the front shell (12) is installed on the bottom shell (11), after the limiting member and the limiting groove (116) are limited, the snap-fit ​​protrusion (115) is snapped into the snap-fit ​​groove (125) for installation.

4. The Bluetooth speaker according to claim 2, characterized in that, An mounting plate (13) is provided on the inner side of the face shell (12). The mounting plate (13) and the face shell (12) enclose to form a first mounting cavity (121). A first through hole for the wire harness to pass through is provided at the bottom of the mounting plate (13).

5. The Bluetooth speaker according to claim 2, characterized in that, The second mounting cavity (111) is provided with a first mounting part (112) and a second mounting part (113), and the second mounting part (113) is spaced above the first mounting part (112); the electronic control component (3) includes a control board (31) and a battery module (32), the control board (31) is mounted on the first mounting part (112), and the battery module (32) is mounted on the second mounting part (113); the control board (31) is electrically connected to the battery module (32) and the speaker assembly (2) through a connecting wire harness.

6. The Bluetooth speaker according to claim 5, characterized in that, The faceplate (12) is also provided with a signal input module (4), which includes a signal plate (41) disposed in the first mounting cavity (121). The signal plate (41) is provided with a control knob (42) and / or control button protruding from the surface of the faceplate (12). The signal plate (41) is electrically connected to the control plate (31). The signal plate (41) is also provided with a signal light, the light source of which is projected outward through a signal hole (123) located on the surface of the faceplate (12).

7. The Bluetooth speaker according to claim 2, characterized in that, The bottom shell (11) has a first through groove (114) at its upper end, and the top shell (12) has a second through groove (124) that matches the first through groove (114). When the top shell (12) is installed on the bottom shell (11), the first through groove (114) and the second through groove (124) are connected to form a lifting handle (7).

8. The Bluetooth speaker according to claim 1, characterized in that, It also includes an earphone jack (6), one end of which is electrically connected to the electronic control component (3), and the other end of which is located on the side of the bottom shell (11).

9. The Bluetooth speaker according to claim 8, characterized in that, The bottom shell (11) is also provided with a winding member (5) on its side. The winding member (5) is detachably connected to the bottom shell (11) and is arranged adjacent to the headphone interface (6). The winding member (5) includes a connecting part (51) and a limiting part (52) connected to the connecting part (51). The projected area of ​​the limiting part (52) on the side of the bottom shell (11) is greater than the projected area of ​​the connecting part (51).

10. An audio playback system, characterized in that, include: The audio playback device is equipped with a second Bluetooth module. And the Bluetooth speaker according to any one of claims 1-9, wherein the Bluetooth speaker communicates and connects to an audio playback device via a first Bluetooth module and a second Bluetooth module to reduce noise by reducing the audio propagation distance.

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