Sound production device, sound system assembly, and vehicle

Abstract

The application provides a sound generating device, a sound system assembly and a vehicle, wherein the sound generating device comprises a panel and a sound generating unit, the sound generating unit is mounted on the panel, the sound generating unit comprises a shell and an acoustic output unit, the shell forms an acoustic cavity, wherein the acoustic cavity contains at least part of the structure of the acoustic output unit, the acoustic output unit outputs sound waves in the acoustic cavity and transmits to the panel, thereby matching the vibration of the acoustic cavity and the uniform diffusion of the panel, so that the sound field forms a natural wrapped sky sound effect, the user can have a better sky sound auditory enjoyment, and because the vibration transmission is stable and the stray noise is small, even if used for a long time, the user will not feel sharp and harsh discomfort, and the user's use experience is improved.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to a sound-generating device, an audio system assembly, and a vehicle. Background Technology

[0002] In the traditional car audio field, due to limitations in power configuration and overall vehicle cost control, most acoustic output units need to be installed in the area near the ears of drivers and passengers. The sound surface is concentrated in a local space on the side, making it difficult to form a sound field that covers the entire cabin. This results in insufficient sound field width and an inability to provide users with an immersive surround sound experience. Furthermore, traditional audio systems often employ a strong directional design and concentrated high-frequency energy output. While this can improve the clarity of local high frequencies, as driving time increases, the excessively strong high-frequency energy can gradually make the sound become sharp and harsh. This not only disrupts the sound quality balance but also causes auditory fatigue and even irritability, seriously affecting the auditory comfort during long-term driving. Summary of the Invention

[0003] The purpose of this application is to provide a sound-generating device, an audio system assembly, and a vehicle to solve the technical problems mentioned in the background art.

[0004] To address the aforementioned problems, in a first aspect, this application provides a sound-generating device, including a panel and a sound-generating unit, wherein the sound-generating unit is mounted on the panel, and the sound-generating unit includes a housing acoustic output unit, the housing forming a sound cavity, wherein the sound cavity accommodates at least a portion of the structure of the acoustic output unit, and the acoustic output unit outputs sound waves within the sound cavity and transmits them to the panel.

[0005] In one possible embodiment of the first aspect, the housing includes a first cover and a second cover, the first cover and the second cover being disposed opposite to each other to form the acoustic cavity.

[0006] In one possible embodiment of the first aspect, the second cover includes a flat section and a guide section connected together, the guide section being located on the side of the flat section away from the center of the acoustic cavity, and the guide section extending toward the panel relative to the flat section.

[0007] In one possible embodiment of the first aspect, the first cover is mounted on the panel, the first cover including a mounting plate and a first connecting side plate and a second connecting side plate extending circumferentially along the edge of the mounting plate, wherein one end of the first connecting side plate extends to the second cover, the first cover is connected to the second cover via the first connecting side plate, and the ends of the first connecting side plate and the second connecting side plate away from the second cover are connected to the panel.

[0008] In one possible embodiment of the first aspect, the ends of the first connecting side plate and the second connecting side plate that are away from the second cover are integrally formed with the panel.

[0009] In one possible embodiment of the first aspect, the mounting plate is provided with a mounting hole that penetrates the mounting plate and is located in the region between the first connecting side plate and the second connecting side plate, wherein the acoustic output unit is embedded in the mounting hole to communicate with the acoustic cavity.

[0010] In one possible embodiment of the first aspect, the acoustic output unit is configured to output sound waves toward the second cover, such that the sound waves generated by the acoustic output unit propagate directly toward the second cover.

[0011] In one possible embodiment of the first aspect, the edge of the mounting hole is provided with a limiting structure protruding into the interior of the acoustic cavity, the limiting structure abutting against the outer peripheral wall of the acoustic output unit to limit the acoustic output unit.

[0012] In one possible embodiment of the first aspect, the acoustic output unit is fixedly connected to the wall of the mounting hole by at least one of the following methods: bonding, welding, threaded connection, and interference fit.

[0013] In one possible embodiment of the first aspect, the first connecting side plate is provided with a through hole located in the middle region of the first connecting side plate along the length direction of the first cover, for the wires of the acoustic output unit to pass through to connect to an external circuit.

[0014] In one possible embodiment of the first aspect, the panel is a light-transmitting element.

[0015] In one possible embodiment of the first aspect, the edge of the panel is provided with a edging, and the first cover is integrally formed with the panel through the edging.

[0016] In one possible embodiment of the first aspect, a wiring groove is provided on the edging, the wiring groove being used to accommodate the wires of the sound-generating unit.

[0017] In one possible embodiment of the first aspect, a sealing fastener is provided at the connection between the first cover and the second cover, and the first cover and the second cover are fixedly connected by the sealing fastener.

[0018] In one possible embodiment of the first aspect, the number of sound-generating units is plurality of and spaced apart on the panel, the plurality of sound-generating units being configured to collectively drive the panel to vibrate in order to form an extended sound field in a space on one side of the panel.

[0019] In one possible embodiment of the first aspect, the sound-generating unit includes an opening for directing vibrational energy within the sound cavity to the panel.

[0020] In one possible embodiment of the first aspect, the opening is positioned toward the center line of the panel to transmit the energy generated by the vibration of the acoustic output unit to the central region of the panel through the opening, wherein the center line is the line connecting the midpoints of the two opposite sides in the width direction of the panel.

[0021] In a second aspect, an audio system assembly is provided, including a housing and a sound-generating device as described in the first aspect, wherein the housing is disposed on the outside of the sound-generating device and is fixedly connected to the sound-generating device.

[0022] Thirdly, a vehicle is provided, including a body and an audio system assembly as described in the second aspect, wherein the audio system assembly is connected to the body.

[0023] Therefore, the sound-generating device of this application forms a stable whole through the connection and cooperation of the various components of the sound-generating unit, avoiding energy loss due to structural loosening during vibration transmission. At the same time, the panel is a smooth surface, which can reduce frictional disturbances caused by surface roughness when it comes into contact with air or other media during vibration, thereby reducing additional airflow noise or structural friction noise. Combined with the vibration of the sound cavity and the uniform diffusion of acoustic energy by the panel, the sound field forms a natural and enveloping sky sound effect, allowing users to have a better sky sound listening experience. Moreover, due to the stable vibration transmission and low stray noise, even after long-term use, there will be no sharp and piercing discomfort, further enhancing the user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the sound-generating device in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of the sound-generating unit in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of the second cover in some embodiments of this application; Figure 4 This is another structural schematic diagram of the sound-generating unit in some embodiments of this application; Figure 5 for Figure 4 An enlarged view at point A; Figure 6 for Figure 1 An enlarged view at point B; Figure 7 This is another structural schematic diagram of the sound-generating device in some embodiments of this application; Figure 8 for Figure 7 Enlarged view at point C; Figure 9 This is a structural block diagram of the audio system assembly in some embodiments of this application; Figure 10 The following are structural block diagrams of vehicles in some embodiments of this application. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the sound-generating device in some embodiments of this application. Figure 2 This is a schematic diagram of the structure of the sound-generating unit in some embodiments of this application. In some instances, such as... Figure 1As shown, the sound-generating device 100 includes a panel 110 and a sound-generating unit 120, with the sound-generating unit 120 mounted on the panel 110.

[0030] The sound-generating unit 120 can be installed in two ways: direct installation or indirect installation. When the sound-generating unit 120 is directly installed on the panel 110, it can be directly bonded to the surface of the panel 110 with an adhesive, forming a rigid connection between the sound-generating unit 120 and the panel 110. When indirect installation is used, the sound-generating unit 120 can be connected to the panel 110 through intermediate connecting structures such as brackets or clips. For example, the sound-generating unit 120 can be fixed to the bracket first, and then bonded to the panel 110 through the bracket, so that the sound-generating unit 120 is indirectly fixed to the panel 110 after being fixed by the bracket.

[0031] like Figure 2 As shown, the sound-generating unit 120 includes a housing 12 and an acoustic output unit 122. The housing 12 forms a sound cavity 124, wherein the sound cavity 124 accommodates at least a portion of the structure of the acoustic output unit 122, and the acoustic output unit 122 outputs sound waves within the sound cavity 124 and transmits them to the panel 110.

[0032] The sound-generating unit 120 is tightly connected to the panel 110 via the housing 12, allowing the vibration of the sound-generating unit 120 to be transmitted to the panel 110 through this structural connection. The components of the sound-generating unit 120 are connected and cooperate to form a stable whole, avoiding energy loss due to structural loosening during vibration transmission and providing structural protection for stable sound generation. At the same time, the panel 110 has a smooth surface, which can significantly reduce frictional disturbances caused by surface roughness when it comes into contact with air or other media during vibration, thereby reducing additional airflow noise or structural friction noise. Combined with the vibration of the sound cavity 124 and the uniform diffusion of the panel 110, the sound field forms a natural, enveloping sky sound effect, providing users with a superior sky sound listening experience. Furthermore, due to the stable vibration transmission and low stray noise, even after prolonged use, there will be no sharp or harsh discomfort, further enhancing the user experience.

[0033] Therefore, when the sound-generating device 100 of this application is powered on, the acoustic output unit 122 in the sound-generating unit 120 vibrates. This vibration is transmitted within the sound cavity 124 formed by the housing 12, driving the air within the sound cavity 124 to undergo Helmholtz resonance and concentrating the vibrational energy to the panel 110 through the sound cavity 124. On the other hand, the vibration is transmitted to the panel 110 through the housing 12, causing the panel 110 to generate bending wave vibration, which in turn causes the panel 110 to vibrate and produce sound. Thus, the Helmholtz resonance of the air within the sound cavity 124 and the bending wave vibration of the panel 110 work synergistically and mutually reinforce each other, driving the entire surface of the panel 110 to vibrate uniformly. The uniform vibration of the panel 110 as a whole pushes the air, thereby forming a broad and uniform "sky sound" sound field, which can bring users a strong sense of immersion, and the sound performance is natural and soft, improving the comfort of the listening experience.

[0034] Please continue reading. Figure 2 In some embodiments, the housing includes a first cover 121 and a second cover 123, the first cover 121 and the second cover 123 being disposed opposite to each other to form the sound cavity 124.

[0035] The acoustic cavity 124 is formed by the first cover 121 and the second cover 123 being arranged opposite to each other. The acoustic cavity 124 is a cavity structure formed by the first cover 121 and the second cover 123 being arranged opposite to each other. Part of the acoustic output unit 122 is located in this cavity, so that the acoustic cavity 124 can surround the vibration energy generated by the acoustic output unit 122.

[0036] The first cover 121 and the second cover 123 can be separate units, or they can be integrated into a single shell structure using a one-piece molding process.

[0037] In some embodiments, the acoustic output unit 122 can be optionally fixedly installed on the first cover 121 or on the second cover 123. When the acoustic output unit 122 is directly fixed to the first cover 121, the vibration generated during its operation will be directly transmitted to the first cover 121 through the connection, reducing the loss of vibration energy during the transmission process. When the acoustic output unit 122 is fixed to the second cover 123, since the second cover 123 and the first cover 121 are rigidly connected, the vibration of the acoustic output unit 122 will first be transmitted to the second cover 123 and then transmitted to the first cover 121.

[0038] Please see Figure 3 , Figure 3The diagram below shows the structure of the second cover in some embodiments of this application. In some embodiments, the second cover 123 includes a flat section 1231 and a guide section 1232 connected together. The guide section 1232 is located on the side of the flat section 1231 away from the center of the acoustic cavity, that is, the guide section 1232 is located outside the flat section 1231, and the guide section 1232 extends toward the panel 110 relative to the flat section 1231.

[0039] Thus, the second cover 123 alters the internal spatial configuration of the acoustic cavity 124 through the arrangement of the guide section 1232, optimizing the acoustic reflection and propagation path of air vibration within the acoustic cavity 124 and improving the efficiency of sound energy transmission within the acoustic cavity 124. Simultaneously, the shape of the guide section 1232 extending towards the panel 110 can guide the sound waves generated by the acoustic output unit 122 within the acoustic cavity 124, guiding the sound waves to be reflected more effectively towards the panel 110. Furthermore, the arrangement of the guide section 1232 enhances the structural rigidity of the second cover 123 itself, thereby more efficiently transmitting the vibrational energy within the acoustic cavity 124 to the panel 110 via the first cover 121.

[0040] The guide segment 1232 can adopt various structural forms, such as arc-shaped, straight, or stepped. For example, when it is arc-shaped, its surface facing the panel 110 is smoothly curved, transitioning and connecting with the flat segment 1231; when it is straight, it extends towards the panel 110 at a preset angle relative to the flat segment 1231, forming a straight raised surface; when it is stepped, it consists of at least two sequentially connected straight segments, each straight segment protruding towards the panel 110 in a direction away from the flat segment 1231, forming a stepped structure. When the guide segment 1232 has different structural forms, the guide segment 1232 is located outside the flat segment 1231 and extends towards the panel 110 relative to the flat segment 1231, together with the flat segment 1231, forming the second cover 123.

[0041] The structural form of the guide segment 1232 can be selected from one or more combinations according to the actual situation, without specific limitation. Different structural forms of the guide segment 1232 can increase the structural thickness and bending angle of the second cover 123, improve its overall rigidity, and ensure that the vibration energy in the sound cavity 124 is transmitted to the first cover 121 more efficiently.

[0042] Please continue reading. Figure 2In some embodiments, the first cover 121 is mounted on the panel 110. The first cover 121 includes a mounting plate 1215 and a first connecting side plate 1211 and a second connecting side plate 1212 extending circumferentially along the edge of the mounting plate 1215. One end of the first connecting side plate 1211 extends to the second cover 123, and the first cover 121 is connected to the second cover 123 via the first connecting side plate 1211. The ends of the first connecting side plate 1211 and the second connecting side plate 1212 away from the second cover 123 are connected to the panel 110. The connection between the first connecting side plate 1211 and the second connecting side plate 1212 and the panel 110 includes a direct connection or an indirect connection.

[0043] The mounting plate 1215 of the first cover 121, along with a first connecting side plate 1211 and a second connecting side plate 1212 extending circumferentially along its edge, together constitute the lateral support structure of the first cover 121. One end of the first connecting side plate 1211 extends to the second cover 123, connecting the first cover 121 to the second cover 123. Simultaneously, the ends of the first connecting side plate 1211 and the second connecting side plate 1212 away from the second cover 123 remain flush and are connected to the panel 110, forming a connection structure between the first cover 121 and the panel 110.

[0044] Thus, the cooperation between the first connecting side plate 1211 and the second cover 123 reduces the leakage of acoustic energy within the sound cavity 124; and the flush connection between the first connecting side plate 1211 and the second connecting side plate 1212 and the panel 110 increases the contact area between the first cover 121 and the panel 110, improving the stability of their connection and allowing the vibration energy generated by the acoustic output unit 122 to be transmitted more evenly to the panel 110 through the two side plates; at the same time, the mounting plate 1215, in conjunction with the circumferentially extended first connecting side plate 1211 and the second connecting side plate 1212, enhances the structural rigidity of the first cover 121 itself, reduces its deformation loss during vibration transmission, and further ensures the efficient transmission of vibration energy from the sound-generating unit 120 to the panel 110.

[0045] In some embodiments, the ends of the first connecting side plate 1211 and the second connecting side plate 1212 that are away from the second cover 123 are integrally formed with the panel 110.

[0046] The first connecting side plate 1211 and the second connecting side plate 1212, at the end away from the second cover 123, are integrally set with the panel 110. The two can be formed into an inseparable whole structure through injection molding and other processes, and there is no detachable connection gap.

[0047] Thus, the integrated design eliminates the assembly gap between the first connecting side plate 1211, the second connecting side plate 1212 and the panel 110, improving the structural strength and stability of the connection between the two and avoiding loosening of the connection due to long-term vibration; at the same time, the integrated structure allows the vibration energy generated by the acoustic output unit 122 to be directly and losslessly transmitted to the panel 110 through the two side plates, reducing the energy attenuation of vibration at the connection point and ensuring that the panel 110 can respond to vibration and produce sound more efficiently; and the injection molding process directly integrates the components, reducing subsequent assembly steps and lowering process costs.

[0048] Specifically, when the ends of the first connecting side plate 1211 and the second connecting side plate 1212 away from the second cover 123 are injection molded with the panel 110, the ends of the first connecting side plate 1211 and the second connecting side plate 1212 and the connection area of ​​the panel 110 are placed together in the cavity of the injection mold. Molten injection material is injected into the cavity. After the material cools and solidifies, the first connecting side plate 1211, the second connecting side plate 1212 and the panel 110 form an integral structure without assembly gap. The injection molded connection part can smoothly transition with the main structure of the first connecting side plate 1211 and the second connecting side plate 1212 and the edge area of ​​the panel 110. In the injection molding process, the injection material can be selected from materials such as PU (polyurethane), polyvinyl chloride (PVC), thermoplastic elastomer (TPE) or ethylene propylene diene monomer (EPDM).

[0049] In some embodiments, the ends of the first connecting side plate 1211 and the second connecting side plate 1212 away from the second cover 123 and the panel 110 can also be integrated with each other through welding or other processes, which are not specifically limited here.

[0050] Please see Figure 4 , Figure 4 This is another structural schematic diagram of the sound-generating unit in some embodiments of this application. In some embodiments, the mounting plate 1215 is provided with a mounting hole 1213. The mounting hole 1213 penetrates the mounting plate 1215 and is located in the area between the first connecting side plate 1211 and the second connecting side plate 1212. The acoustic output unit 122 is embedded in the mounting hole 1213 to communicate with the sound cavity 124.

[0051] The mounting plate 1215 has a mounting hole 1213 that extends through the thickness of the mounting plate 1215 and is located in the area between the first connecting side plate 1211 and the second connecting side plate 1212, so that the mounting hole 1213 is located in the main area of ​​the first cover 121. The acoustic output unit 122 is embedded in the mounting hole 1213, and its outer periphery is fixed to the hole wall of the mounting hole 1213. At the same time, the sound-emitting end of the acoustic output unit 122 is connected to the sound cavity 124 formed by the housing 12 through the mounting hole 1213, so as to ensure that the vibration and acoustic energy generated by the acoustic output unit 122 can be directly transmitted into the sound cavity 124.

[0052] Thus, embedding the acoustic output unit 122 in the mounting hole 1213 improves the connection stability between the acoustic output unit 122 and the first cover 121, avoiding energy loss caused by relative displacement during vibration; and the acoustic output unit 122 is connected to the sound cavity 124, ensuring that its vibration energy can directly drive the air vibration in the sound cavity 124, thereby improving the efficiency of vibration energy transmission to the panel 110, etc.

[0053] In some embodiments, the acoustic output unit 122 is configured to output sound waves toward the second cover 123 so that the sound waves generated by the acoustic output unit 122 propagate directly toward the second cover 123.

[0054] The acoustic output unit 122 is configured to output sound waves toward the second cover 123, such that the main sound wave output direction of the acoustic output unit 122 is opposite to the surface of the second cover 123 toward the inside of the sound cavity 124. That is, the sound waves generated by the main sound-producing component of the acoustic output unit 122 when it is working will propagate toward the inner surface of the second cover 123.

[0055] Thus, the sound waves propagate directly toward the second cover 123. The guide section 1232 of the second cover 123 can guide the sound waves by extending into the sound cavity, so that more sound wave energy is reflected along the preset path, reducing the energy loss caused by the disordered diffusion of sound waves to the edge of the sound cavity, and improving the efficiency of vibration energy transmission to the panel 110.

[0056] Please refer to the following: Figure 5 , Figure 5 for Figure 4 In the enlarged schematic diagram at point A, the edge of the mounting hole 1213 is provided with a limiting structure 1213a that protrudes into the interior of the acoustic cavity 124. The limiting structure 1213a abuts against the outer peripheral wall of the acoustic output unit 122 to limit the acoustic output unit 122.

[0057] The mounting hole 1213 has an integrally formed limiting structure 1213a that protrudes into the sound cavity 124 at the edge of the mounting hole 1213. The limiting structure 1213a can be a ring-shaped protrusion that is continuously distributed around the circumference of the mounting hole 1213. The height of the protrusion is in close contact with the outer peripheral wall of the acoustic output unit 122 embedded in the mounting hole 1213. When the acoustic output unit 122 is embedded in the mounting hole 1213, the inner wall of the limiting structure 1213a directly fits and abuts against the outer peripheral wall of the acoustic output unit 122 to limit the shaking of the acoustic output unit 122 in the mounting hole 1213 and fix the assembly position of the acoustic output unit 122 in the mounting hole 1213.

[0058] Thus, the limiting structure 1213a, by abutting against the outer peripheral wall of the acoustic output unit 122, prevents the acoustic output unit 122 from shifting position due to force during sound vibration, and prevents gaps or collisions between the acoustic output unit 122 and the wall of the mounting hole 1213, ensuring the long-term stability of their fit. Furthermore, during assembly, the limiting structure 1213a allows for quick determination of the embedding depth and circumferential position of the acoustic output unit 122 without the need for additional positioning fixtures, improving the installation efficiency of the sound-generating unit 120.

[0059] In some embodiments, the acoustic output unit 122 and the wall of the mounting hole 1213 are fixedly connected by at least one of the following methods: bonding, welding, threaded connection, and interference fit.

[0060] In this configuration, when adhesive bonding is used, adhesive is filled between the outer peripheral wall of the acoustic output unit 122 and the wall of the mounting hole 1213, forming a fixed and sealed connection after curing. When welding is used, ultrasonic welding or similar processes can be used to fuse the contact area between the outer peripheral wall of the acoustic output unit 122 and the wall of the mounting hole 1213 into a single unit. When a threaded connection is used, the outer peripheral wall of the acoustic output unit 122 has external threads, and the wall of the mounting hole 1213 has corresponding internal threads; the two are fixed by threaded engagement. When an interference fit is used, the outer peripheral dimension of the acoustic output unit 122 is slightly larger than the diameter of the mounting hole 1213; during assembly, pressure is applied to embed the acoustic output unit 122 into the hole, forming a tight fit. In practical applications, the above methods can be combined (such as interference fit combined with adhesive bonding) to enhance the connection effect.

[0061] Thus, by selecting and combining various connection methods, the sound-generating unit 120 can be adapted to different assembly scenarios. For example, bonding and welding can improve the sealing of the connection and reduce the leakage of acoustic energy from the mating gap in the sound cavity 124; threaded connection facilitates disassembly and maintenance in the later stage, while interference fit can achieve rapid assembly; whether a single method or a combination method is used, it can ensure a stable connection between the acoustic output unit 122 and the wall of the mounting hole 1213, and avoid relative displacement of the acoustic output unit 122 during vibration and sound generation.

[0062] In some embodiments, the acoustic output unit 122 and the wall of the mounting hole 1213 can also be fixedly connected by means of snap-fit ​​connection, riveting, or magnetic attraction. For example, when connected by snap-fit, the wall of the mounting hole 1213 may be provided with snaps extending inward at intervals along the circumferential direction, and the outer peripheral wall of the acoustic output unit 122 is provided with an annular groove at a corresponding position. When the acoustic output unit 122 is inserted into the mounting hole 1213, the snaps are inserted into the groove, forming a circumferentially uniformly distributed axial limiting.

[0063] Please continue reading. Figure 2 In some embodiments, the first connecting side plate 1211 is provided with a through hole 1214, which is located in the middle region of the first connecting side plate 1211 along the length direction a of the first cover 121, for the wires of the acoustic output unit 122 to pass through to connect to an external circuit.

[0064] The through hole 1214 is located in the middle region of the first connecting side plate 1211 along the length direction a of the first cover 121. That is, along the length direction a, the distance between the through hole 1214 and the two ends of the first connecting side plate 1211 is approximately equal. The wire of the acoustic output unit 122 (used to transmit electrical signals) can pass through the through hole 1214, thereby achieving electrical connection with the external circuit.

[0065] Therefore, the through hole 1214 is located in the middle area of ​​the length direction a of the first connecting side plate 1211, which avoids the connection parts between the two ends of the side plate and the second cover 123 and the panel 110, reducing the impact on the connection strength. It also makes the path of the wire lead-out shorter and more centered, avoiding interference with other structures due to the wire being biased to one side. In addition, the setting of the through hole 1214 means that the wire does not need to be led out from the connection gap of the sound cavity 124, ensuring the sealing of the sound cavity 124. At the same time, the setting of the dedicated through hole makes the wire arrangement more regular, avoiding the wire from being damaged by friction with the internal structure of the sound cavity 124 due to shaking during vibration, improving the reliability of the wire connection, and thus ensuring that the acoustic output unit 122 can stably receive external electrical signals and work continuously.

[0066] In some embodiments, the panel 110 is a light-transmitting element.

[0067] When the panel 110 is a light-transmitting component, it can be made of glass materials commonly used in vehicles and other scenarios, such as the sunroof, windshield, rear windshield, or side window glass of a vehicle. Preferably, the panel 110 is a sunroof, which is located at the top of the space and can better cooperate with the sound cavity 124 to transmit its vibration energy, forming a sky sound field that naturally wraps around from the top.

[0068] In some embodiments, the material and shape of the panel 110 can be selected according to the actual application scenario and needs. The panel 110 can be a light-transmitting component or a non-light-transmitting component with a smooth surface, both of which can be installed and adapted to the sound-generating unit 120, and can better reflect and transmit the acoustic energy generated by the vibration of the sound-generating unit 120 to achieve a natural and soft sound effect. When the panel 110 is a non-light-transmitting component with a smooth surface, a plastic panel, a smooth metal panel, etc. can be selected. Its smooth surface can reduce friction with the air during vibration and avoid generating additional noise.

[0069] Please continue reading. Figure 1 In some embodiments, the edge of the panel 110 is provided with a edging 130, and the first cover 121 is integrally formed with the panel 110 through the edging 130. The edging 130 is formed by PU injection molding. In the injection molding process, after the injection molding material cools and solidifies, the edging 130 is formed and is tightly integrated with the panel 110 and the sound-generating unit 120, forming an integrated structure.

[0070] Therefore, due to the integrated design, there is no small assembly gap between the first cover 121 and the panel 110 that exists in traditional assembly methods. Even under long-term vibration, it can avoid loosening of connections and displacement of components caused by the expansion of gaps.

[0071] In some embodiments, the sound-generating unit 120 of the sound-generating device 100 is disposed in the edge region of the panel 110, and the edge of the panel 110 is provided with a light-shielding layer corresponding to the installation position of the sound-generating unit 120, and the sound-generating unit 120 is disposed entirely on the surface of the panel 110 covered by the light-shielding layer.

[0072] The light-shielding layer may be a black ink layer printed on the surface of the panel 110, or a light-shielding area integrally formed with the panel 110. The sound-emitting unit 120 is installed on the inner surface of the panel 110 corresponding to the light-shielding layer (such as the side facing the inside of the vehicle), and its overall outline falls within the coverage area of ​​the light-shielding layer, so that the main structure of the sound-emitting unit 120 does not exceed the boundary of the light-shielding layer.

[0073] Thus, the sound-emitting unit 120 is shielded by the light-shielding layer, and the structure of the sound-emitting unit 120 cannot be seen from the outside (such as outside the vehicle) or the inside (such as inside the vehicle) of the panel 110, thus avoiding damage to the overall aesthetics of the panel; in addition, the light-shielding layer can also provide a certain degree of environmental protection for the sound-emitting unit 120, reducing the impact of direct external light on the acoustic output unit 122 and causing aging and other problems, which can further extend the service life of the sound-emitting unit.

[0074] In some embodiments, a wiring groove (not shown) is provided on the edging 130, which is used to accommodate the wires of the sound-generating unit 120.

[0075] The edging 130 extends along the edge contour of the panel 110, and the wiring groove opened on the edging 130 is provided along the extension direction of the edging 130. The size of the groove is adapted to the size of the wire of the sound unit 120, so that the wire led out from the through hole 1214 of the first connecting side plate 1211 can be embedded and accommodated therein, so that the wire extends along the direction of the edging 130 to the external circuit interface.

[0076] Therefore, the wiring groove on the edging 130 provides dedicated space for the wires, allowing them to be arranged in an orderly manner along the edge of the panel 110. This avoids the wires being exposed or stacked haphazardly, which could interfere with or rub against other components, and reduces the risk of damage to the wires due to vibration or assembly compression. Furthermore, the wiring groove provides physical constraint on the wires, preventing them from shifting due to vibration during the operation of the sound-generating device 100, thus ensuring the stability of the wire connection. Combined with the through hole 1214 in the first connecting side plate 1211, the wires are led out through the through hole 1214 and directly enter the wiring groove of the edging 130, forming a complete wire path. This does not affect the appearance of the panel 110 and improves the neatness and reliability of the overall structure.

[0077] In some embodiments, the wiring channel can be a structure pre-designed in the cavity of the injection mold to match the wiring channel when the edge banding 130 is formed by injection molding. During the injection molding process, the molten material fills the cavity and wraps the structure. After the material cools and solidifies, the mold can be removed so that the wiring channel is integrally formed with the edge banding 130. At this time, the wiring channel and the edge banding 130 are an inseparable whole.

[0078] In some embodiments, the edge banding 130 can be integrally formed by injection molding, and then a wiring groove can be processed at a preset position on the edge banding 130 by processing (such as cutting or stamping). During processing, the depth, width and direction of the groove can be adjusted according to the diameter and arrangement path of the wire to adapt to the actual wiring requirements.

[0079] Please see Figure 6 , Figure 6 for Figure 1In the enlarged schematic diagram at point B, in some embodiments, the edging 130 is provided with a locking hole 131, which is used to lock the sound unit assembly 120 to other structures through a locking member.

[0080] The diameter of the locking hole 131 matches the outer diameter of the suitable locking component (such as screw, bolt, etc.), and the position of the locking hole 131 corresponds to the preset area where the sound-generating device 100 needs to be connected to other structures. When it is necessary to fix the sound-generating device 100, the locking component can pass through the locking hole 131 to lock, thereby firmly connecting the sound-generating device 100 to other structures.

[0081] In some embodiments, a sealing fastener is provided at the connection between the first cover 121 and the second cover 123, and the first cover 121 and the second cover 123 are fixedly connected by the sealing fastener.

[0082] The first cover 121 and the second cover 123 can be connected by various methods such as bonding, welding, threaded connection, and snap-fit ​​connection. When bonding is used, the sealing fastener can be an adhesive with bonding and sealing functions. The adhesive is continuously applied along the connection edge of the first cover 121 and the second cover 123, and after curing, it can bond and fix the two together and fill the connection gap to form a sealing layer. When welding is used, the sealing fastener can be a fusion sealing layer formed during the welding process. In this process, the material at the connection edge of the first cover 121 and the second cover 123 is melted and fused together by high temperature, and the fusion layer itself forms a gapless sealing structure. When screw fixing is used, the sealing fastener can be a screw or bolt. When the screw is tightened to make the first cover 121 and the second cover 123 fit together, a sealed and fixed connection is achieved. When snap-fit ​​connection is used, the sealing fastener can be a snap-fit ​​structure. When the snap-fit ​​is engaged, the first cover 121 and the second cover 123 form a fixed connection.

[0083] In some embodiments, the first cover 121 and the second cover 123 may also be fixedly and sealed together by riveting or other means, which are not specifically limited here.

[0084] Please continue reading. Figure 1 In some embodiments, the number of sound-generating units is multiple and spaced apart on the panel, and the multiple sound-generating units are configured to collectively drive the panel to vibrate in order to form an extended sound field in the space on one side of the panel.

[0085] In this application, the sound-generating device 100 arranges multiple sound-generating units 120 at a preset interval along the length direction b, or at a preset interval along the width direction c, or at regular intervals along both the length direction b and the width direction c, so that each sound-generating unit 120 corresponds to a different area of ​​the panel 110, and the multiple sound-generating units 120 are configured to generate vibration synchronously, thereby acting together on the panel 110 to drive its overall vibration, and finally forming an extended sound field in the space on one side of the panel.

[0086] Thus, multiple spaced sound-emitting units 120 can output vibrations from different positions on the panel 110, allowing vibration energy to be transmitted more evenly to the entire area of ​​the panel 110, avoiding the problem of excessively strong local vibrations and weak vibrations in other areas caused by a single sound-emitting unit. At the same time, the sound cavity 124 corresponding to each sound-emitting unit 120 can drive the surrounding air to vibrate, and the air resonance energy of adjacent sound cavities 124 can be superimposed and enhanced synergistically, causing the panel 110 to form a more complete and wider resonance with the surrounding air, ultimately forming a sound field with a wider coverage and a more uniform sound pressure distribution, further improving the user experience.

[0087] In this application, the position and number of the sound-emitting units 120 of the sound-emitting device 100 can be flexibly set according to the actual application scenario. For example, the distribution position of the sound-emitting units 120 in the length direction b and width direction c of the panel 110 can be adjusted according to multiple dimensions such as the size specifications of the panel 110, the coverage requirements of the target sound field, and the installation space limitations. For example, they can be near the edge area or the middle area of ​​the panel 110. Furthermore, the sound-emitting units 120 can be set according to the requirements of acoustic power, loudness, and coverage angle. A single sound-emitting unit 120 or multiple sound-emitting units 120 distributed at intervals can be set to adapt to the auditory experience requirements of different sized panels 110 and different scenarios.

[0088] Please refer to the following: Figure 7 and Figure 8 , Figure 7 This is another structural schematic diagram of the sound-generating device in some embodiments of this application. Figure 8 for Figure 7 An enlarged view at point C. In some embodiments, such as Figure 7 and Figure 8 As shown, the sound cavity 124 of the sound-generating unit 120 includes an opening 1241 for guiding the vibration energy within the sound cavity to the panel.

[0089] The opening 1241 is a connecting channel formed between the sound cavity 124 and the panel, which is used to guide the air vibration energy generated by the speaker vibration in the sound cavity 124 to the surface of the panel 110, thereby avoiding the loss of vibration energy in the sound cavity due to disordered reflection and scattering in the enclosed space, and allowing more energy to be concentrated on the panel 110.

[0090] In some embodiments, the opening 1241 is disposed toward the center line of the panel 110 so as to transmit the energy generated by the vibration of the acoustic output unit 122 to the central region of the panel 110 through the opening, wherein the center line is the line connecting the midpoints of the two opposite sides in the width direction c of the panel 110.

[0091] The sound-generating unit 120 has an opening 1241 in its acoustic cavity 124 facing the center line of the panel 110. When the acoustic output unit 122 works and generates vibration energy, the vibration energy and air vibration waves are transmitted through the opening 1241 of the acoustic cavity 124, directly act on the surface of the panel 110 and form reflections, forming a sound field with a wider coverage and more balanced sound field.

[0092] Traditional sound-generating devices are mostly single-point sound sources or fixed-direction outputs, and the propagation of sound waves is easily limited by direction, lacking a sense of full coverage; while the sound-generating device 100 of this application allows sound waves to diffuse from the panel 110 to the entire space, enhancing the immersive feeling of sky sound, allowing sound waves to envelop the listener from multiple dimensions, and improving the surround sound experience.

[0093] Therefore, the opening 1241 of the sound cavity 124 faces directly towards the central area, allowing the vibration energy output by the sound cavity 124 to act directly on the central area and diffuse evenly in all directions from the center, making the vibration amplitude of each area of ​​the panel 110 more consistent, thereby forming a sound field with a wider coverage and more uniformity.

[0094] Please see Figure 9 , Figure 9 The following is a structural block diagram of an audio system assembly in some embodiments of this application. In some embodiments, the audio system assembly 200 includes a housing 210 and a sound-generating device 100 as described in any of the foregoing embodiments, wherein the housing 210 is disposed outside the sound-generating unit 120 and is fixedly connected to the sound-generating device 100.

[0095] The outer shell 210 is located on the outside of the sound-generating unit 120, which can effectively isolate dust, moisture and other impurities in the external environment, prevent them from entering the sound-generating unit 120, and prevent the components from rusting and short-circuiting. At the same time, the outer shell can buffer external impacts, reduce damage to the acoustic output unit 122, the first cover 121 and other structures, and ensure the long-term stable operation of the sound-generating device.

[0096] The audio system assembly 200 of this application can reliably meet the main acoustic performance indicators such as a sound pressure level exceeding 100dB, a frequency response coverage range of 20Hz-20KHz with an error controlled within ±3dB, and a directivity coverage angle with frequency response fluctuations not exceeding 3dB within a horizontal range of ±30°. Furthermore, the seamless connection between the first cover 121 and the second cover 123 via sealing fasteners reduces sound wave energy output loss. The spacing of the panel 110 and the sound-emitting units 120 along the length / width direction, along with the housing design, allows the sound field to radiate uniformly from the top to the horizontal direction. This enables the audio system assembly 200 to have long-term stable operation and meet certain acoustic requirements.

[0097] The outer shell 210 can be specifically the roof of a vehicle. The outer shell 210 can be fixedly connected to the sound-generating device 100 by aligning the pre-set locking hole 131 on the edge 130 of the sound-generating device 100 with the corresponding mounting hole of the roof (outer shell 210), and then passing the locking member through the locking hole 131 and locking it with the mounting hole of the roof, so that the sound-generating device 100 is connected to the roof.

[0098] Thus, after the sound-generating device 100 is fixed to the roof, its corresponding sound-generating unit 120 is arranged between the panel 110 and the housing 210, without occupying the space of the door trim panels, A-pillar trim panels, etc. that traditional car audio systems often rely on, reducing the occupation of the vehicle's interior functional areas and making the overall interior styling and functional design more flexible; at the same time, the opening 1241 of the sound cavity 124 can face the panel 110. After being powered on, the vibration energy is transmitted to the panel 110 through the outlet of the sound cavity 124 and reflected and diffused. The sound field transmitted by the panel 110 is combined with the housing 210 to form a surround sound field, which can further enhance the immersive sky sound experience.

[0099] Please see Figure 10 , Figure 10 The present invention provides a structural block diagram of a vehicle in some embodiments. In some embodiments, the vehicle 300 includes a body 310 and an audio system assembly 200 as described in any of the foregoing embodiments, wherein the audio system assembly 200 is connected to the body 310.

[0100] When the audio system assembly 200 is connected to the vehicle body 310, the panel 110 in the audio system assembly 200 is at least one of the sunroof, side window, windshield or rear windshield of the vehicle 300; and the sound generating unit 120 of the sound generating device is installed on the surface of the panel 110 facing the inside of the vehicle 300, so that the vibration generated by the sound generating unit 120 is directly transmitted to the panel 110, and the sound generating unit 120 is protected from being exposed to the external environment of the vehicle and subjected to wind, rain, dust and other corrosion.

[0101] The audio system assembly 200 is securely installed on the vehicle body 310, which can adapt to the vibration and bumpy environment during vehicle operation, ensuring the stable operation of the sound-generating device 100. This allows the panel 110 to convert vibration energy into a uniform sky sound and surround sound field covering the cabin. At the same time, the integrated design of the audio system assembly 200 and the vehicle body 310 does not damage the original appearance and structural integrity of the vehicle, and allows the sound field to naturally envelop the occupants from the top, further enhancing the auditory immersion during driving.

[0102] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. Furthermore, for those skilled in the art, based on the ideas of this application, there will be changes in specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the protection scope of the technical solution.

Claims

1. A sound-generating device, characterized in that, The device includes a panel and a sound-generating unit, the sound-generating unit being mounted on the panel, the sound-generating unit including a housing and an acoustic output unit, the housing forming a sound cavity, wherein the sound cavity accommodates at least a portion of the structure of the acoustic output unit, and the acoustic output unit outputs sound waves within the sound cavity and transmits them to the panel; The sound-generating device transmits vibrations to the panel through the housing, causing the panel to vibrate. The housing includes a first cover and a second cover, which are disposed opposite to each other to form the acoustic cavity. The second cover includes a guide section extending toward the panel. The guide section alters the spatial configuration inside the acoustic cavity, optimizes the acoustic reflection and propagation path of air vibrations within the acoustic cavity, and improves the efficiency of sound energy transmission within the acoustic cavity. It also guides the sound waves generated by the acoustic output unit within the acoustic cavity to be reflected toward the panel. Furthermore, the guide section enhances the structural rigidity of the second cover itself, enabling it to transmit the vibrational energy within the acoustic cavity to the panel via the first cover. The panel is a light-transmitting element, which includes glass.

2. The sound-generating device according to claim 1, characterized in that, The second cover includes a flat section connected to the guide section, the guide section being located on the side of the flat section away from the center of the acoustic cavity, and the guide section extending toward the panel relative to the flat section.

3. The sound-generating device according to claim 1, characterized in that, The first cover is mounted on the panel, and the first cover includes a mounting plate and a first connecting side plate and a second connecting side plate extending circumferentially along the edge of the mounting plate. Wherein, one end of the first connecting side plate extends to the second cover, the first cover is connected to the second cover through the first connecting side plate, and the ends of the first connecting side plate and the second connecting side plate away from the second cover are connected to the panel.

4. The sound-generating device according to claim 3, characterized in that, The ends of the first connecting side plate and the second connecting side plate that are away from the second cover are integrally formed with the panel.

5. The sound-generating device according to claim 3, characterized in that, The mounting plate is provided with mounting holes that penetrate the mounting plate and are located in the area between the first connecting side plate and the second connecting side plate. The acoustic output unit is embedded in the mounting holes to communicate with the sound cavity.

6. The sound-generating device according to claim 1, characterized in that, The acoustic output unit is configured to output sound waves toward the second cover so that the sound waves generated by the acoustic output unit propagate directly toward the second cover.

7. The sound-generating device according to claim 5, characterized in that, The edge of the mounting hole is provided with a limiting structure that protrudes into the interior of the acoustic cavity. The limiting structure abuts against the outer peripheral wall of the acoustic output unit to limit the acoustic output unit.

8. The sound-generating device according to claim 5, characterized in that, The acoustic output unit is fixedly connected to the wall of the mounting hole by at least one of the following methods: bonding, welding, threaded connection, and interference fit.

9. The sound-generating device according to claim 3, characterized in that, The first connecting side plate is provided with a through hole, which is located in the middle area of ​​the first connecting side plate along the length direction of the first cover, for the wires of the acoustic output unit to pass through to connect to the external circuit.

10. The sound-generating device according to claim 1, characterized in that, The panel has a edging, and the first cover is integrally formed with the panel through the edging.

11. The sound-generating device according to claim 10, characterized in that, The edging is provided with a wiring groove, which is used to accommodate the wires of the sound-generating unit.

12. The sound-generating device according to claim 1, characterized in that, A sealing fastener is provided at the connection between the first cover and the second cover, and the first cover and the second cover are fixedly connected by the sealing fastener.

13. The sound-generating device according to claim 1, characterized in that, The number of sound-generating units is multiple and spaced apart on the panel. The multiple sound-generating units are configured to drive the panel to vibrate together, so as to form an extended sound field in the space on one side of the panel.

14. The sound-generating device according to claim 1, characterized in that, The sound-generating unit has an opening in its acoustic cavity for directing the vibrational energy within the acoustic cavity to the panel.

15. The sound-generating device according to claim 14, characterized in that, The opening is positioned toward the center line of the panel to transmit the energy generated by the vibration of the acoustic output unit to the central region of the panel through the opening, wherein the center line is the line connecting the midpoints of the two opposite sides in the width direction of the panel.

16. An audio system assembly, characterized in that, It includes a housing and a sound-generating device as described in any one of claims 1-15, wherein the housing is disposed on the outside of the sound-generating unit and is fixedly connected to the sound-generating device.

17. A vehicle, characterized in that, The system includes a vehicle body and an audio system assembly as described in claim 16, wherein the audio system assembly is connected to the vehicle body.

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