Speaker device with resonance function, vehicle-mounted sound system, and vehicle

Abstract

The application provides a loudspeaker device with resonance function, a vehicle-mounted sound system and a vehicle with the same. The loudspeaker device comprises a loudspeaker assembly and a damping assembly. The loudspeaker assembly is connected with a mounting base. The loudspeaker assembly has a first audio input line. The damping assembly is connected with one of the loudspeaker assembly and the mounting base. The damping assembly has a second audio input line. The second audio input line is in conduction with the first audio input line. The damping assembly is located at the back of the loudspeaker assembly. When the loudspeaker assembly works, at least part of the damping assembly is arranged to be vibratable relative to at least one of the loudspeaker assembly and the mounting base, so as to reduce the vibration of the mounting base. The embodiment of the application solves the problem of abnormal resonance of the low frequency of the vehicle door in the prior art.

Description

Technical Field

[0001] This invention relates to the field of vehicle audio technology, and more specifically, to a speaker device with resonance function and a vehicle having the same. Background Technology

[0002] As car audio technology advances, users' demands for bass performance are increasing. Traditional car audio systems suffer from sound quality degradation due to vibrations in the car door panels, especially at high speeds when vibrations are intense, resulting in a significant drop in bass performance. Furthermore, sound waves from the back of the speakers reflect randomly within the enclosure, causing interference and reducing low-frequency purity, severely impacting the user experience. Existing door subwoofers often use a traditional architecture where the vibration direction is perpendicular to the sheet metal plane, which is precisely where the sheet metal's dynamic stiffness is weakest. Therefore, resonance and rattling problems are common. Traditional solutions typically compensate for insufficient stiffness by increasing the sheet metal thickness, but this is largely ineffective due to cost and vehicle weight constraints.

[0003] There is currently no effective solution to the aforementioned technical problems. Summary of the Invention

[0004] The main objective of this invention is to provide a loudspeaker device with resonance function, a car audio system, and a vehicle having the same, so as to solve the problem of abnormal bass resonance noise in car doors in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a loudspeaker device with a resonant function is provided, comprising: a loudspeaker assembly and a vibration damping assembly, the loudspeaker assembly being connected to a mounting base and having a first audio input line; the vibration damping assembly being connected to one of the loudspeaker assembly and the mounting base and having a second audio input line that is connected to the first audio input line, and the vibration damping assembly being located on the back side of the loudspeaker assembly, wherein, when the loudspeaker assembly is in operation, at least a portion of the vibration damping assembly is vibratoryly disposed relative to at least one of the loudspeaker assembly and the mounting base to reduce the vibration of the mounting base.

[0006] Furthermore, the audio input through the first audio input line is the same as the audio input through the second audio input line.

[0007] Furthermore, when the loudspeaker assembly is working, the vibration state of the loudspeaker assembly is out of phase with the vibration state of the damping assembly at any given time.

[0008] Furthermore, the speaker assembly includes: a first support member, a first core post, a first permanent magnet, and a frame assembly, at least a portion of the first support member being located within a mounting cavity formed by the mounting base; the first core post being connected to the first support member; the first permanent magnet being connected to the first support member, and the first core post being located within the inner circle of the first permanent magnet, with a distance between the outer circumferential surface of the first core post and the inner circumferential surface of the first permanent magnet; one end of the frame assembly being connected to the mounting base, and the other end of the frame assembly being connected to the first permanent magnet via a first magnetic circuit clamp; a vibration damping assembly being connected to the first support member, and the vibration damping assembly being located on the side away from the first core post, with at least a portion of the vibration damping assembly being located within the mounting cavity.

[0009] Furthermore, the vibration damping component includes: a second support member, a third support member, a voice coil assembly, and a core assembly. One end of the second support member is connected to the first support member, and the other end of the second support member is connected away from the first support member, forming an accommodating space between the second support member and the first support member; the third support member is disposed within the accommodating space, and is disposed opposite to the first support member, and is connected to the second support member via a spider structure; the voice coil assembly is connected to the first support member, and is provided with a second audio input line; the core assembly is connected to the third support member and is located between the third support member and the first support member, with a portion of the voice coil assembly extending into the core assembly.

[0010] Furthermore, the core assembly includes: a second core and a second permanent magnet. The first end of the second core is connected to a third support member, and the second end of the second core extends toward the side where the first core is located. The end of the second core is positioned at a distance from the first support member. The second permanent magnet is connected to the third support member and is positioned along the outer circumferential surface of the second core. The second permanent magnet is located within an accommodating space. A second magnetic circuit clamp is provided at the end of the second permanent magnet away from the third support member. A portion of the voice coil assembly extends between the inner circular surface of the second permanent magnet and the outer circumferential surface of the second core.

[0011] Furthermore, a magnetic guide plate is provided at the end of the second core post facing the second support member, and part of the voice coil assembly is located between the magnetic guide plate and the second magnetic circuit clamp.

[0012] Furthermore, the voice coil assembly includes: a first voice coil, which is a ring structure, with a first end connected to a first support member, a second end of the first voice coil extending toward the side where the third support member is located, a second audio input line electrically connected to the first voice coil, and the second end of the first voice coil located between a magnetic plate and a second magnetic circuit clamp.

[0013] Furthermore, the loudspeaker assembly includes: a loudspeaker diaphragm, the loudspeaker diaphragm being horn-shaped, the small-diameter end of the loudspeaker diaphragm being disposed close to the first core post, the large-diameter end of the loudspeaker diaphragm being disposed away from the first core post, and the large-diameter end of the loudspeaker diaphragm being connected to the frame assembly via a loudspeaker surround.

[0014] Furthermore, a speaker dust cap is provided at the small diameter end of the speaker diaphragm. The speaker dust cap is positioned opposite to the top of the first core post, and the speaker dust cap protrudes outward toward the outside of the speaker diaphragm.

[0015] Furthermore, the speaker assembly also includes: a second voice coil connected to at least one of the speaker diaphragm and the speaker dust cap, an end of the first core extending into the second voice coil, the outer diameter of the second voice coil being smaller than the outer diameter of the first voice coil, and a first audio input line electrically connected to the second voice coil.

[0016] Furthermore, the second magnetic circuit clamp and the second support member are connected by a spring wave structure.

[0017] Furthermore, at least one of an inductor and a capacitor is provided on the second audio input line.

[0018] Furthermore, the mounting base has a mounting cavity for mounting speaker assemblies, and the vibration damping assembly is connected to the bottom of the mounting cavity.

[0019] Furthermore, the vibration damping components are located on the outside of the mounting cavity.

[0020] Furthermore, the vibration damping assembly includes a second support member and a voice coil assembly. The second support member is connected to the bottom of the mounting cavity, and the first voice coil of the voice coil assembly is connected to the bottom of the mounting cavity.

[0021] Furthermore, the loudspeaker device is the loudspeaker device according to any one of claims 1 to 16.

[0022] Furthermore, the mounting base for the speaker unit is the door sheet metal, the vehicle roof structure, or the body-in-white sheet metal.

[0023] According to another aspect of the present invention, a vehicle is also provided, the vehicle including a vehicle audio system, the vehicle audio system being the vehicle audio system described in the above embodiments.

[0024] By applying the technical solution of this invention, vibration reduction can be achieved through the internal structural design (rear vibration damping unit) and simple circuit components of the speaker module. When the speaker assembly emits sound, due to Newton's third law (action and reaction forces), a major vibrational reaction force is generated and transmitted to the mounting base. The vibration damping component is connected to the first audio input line through the second audio input line and receives the audio signal, causing the two forces of similar magnitude and opposite direction to superimpose and cancel each other out in space. This significantly reduces the total vibrational energy transmitted to the door sheet metal, reduces the R&D cycle, mold costs, and per-vehicle manufacturing costs, while taking into account both lightweight design and improved sound quality. The embodiments of this application solve the problem of bass resonance and abnormal noise in car doors in the prior art. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0026] Figure 1 A schematic diagram of the structure of a first embodiment of the loudspeaker device according to the present invention is shown;

[0027] Figure 2 A schematic diagram of a second embodiment of the loudspeaker device according to the present invention is shown;

[0028] Figure 3 A schematic diagram of a third embodiment of the loudspeaker device according to the present invention is shown;

[0029] Figure 4 A schematic diagram of a fourth embodiment of the loudspeaker device according to the present invention is shown;

[0030] Figure 5 A schematic diagram of a fifth embodiment of the loudspeaker device according to the present invention is shown;

[0031] Figure 6 A schematic diagram of a sixth embodiment of the loudspeaker device according to the present invention is shown;

[0032] Figure 7 A schematic diagram of a seventh embodiment of the loudspeaker device according to the present invention is shown;

[0033] Figure 8 A schematic diagram of the structure of an eighth embodiment of the loudspeaker device according to the present invention is shown.

[0034] The above figures include the following reference numerals:

[0035] 1. Speaker assembly;

[0036] 10. First support component;

[0037] 100. Install the foundation;

[0038] 101. Installation cavity;

[0039] 11. Loudspeaker diaphragm;

[0040] 12. Speaker surround;

[0041] 13. Speaker dust cap;

[0042] 14. Speaker pluck;

[0043] 15. Second voice coil;

[0044] 16. First audio input cable;

[0045] 17. First magnetic circuit clamp;

[0046] 18. First core pillar;

[0047] 19. The first permanent magnet;

[0048] 2. Sink stand assembly;

[0049] 3. Vibration damping components;

[0050] 31. Third support component;

[0051] 32. Second permanent magnet;

[0052] 33. Magnetic plate;

[0053] 34. Second magnetic circuit clamp;

[0054] 35. Second audio input cable;

[0055] 36. Second support component;

[0056] 361. Accommodation space;

[0057] 37. Spindle structure;

[0058] 38. First voice coil;

[0059] 39. Second core post;

[0060] 41. Inductance;

[0061] 42. Capacitor. Detailed Implementation

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0065] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0066] Combination Figures 1 to 8 As shown, according to a specific embodiment of this application, a loudspeaker device with a resonance function is provided.

[0067] Specifically, such as Figure 1 As shown, the loudspeaker device with resonance function includes: a loudspeaker assembly 1 and a vibration damping assembly 3. The loudspeaker assembly 1 is connected to a mounting base 100 and has a first audio input line 16. The vibration damping assembly 3 is connected to one of the loudspeaker assembly 1 and the mounting base 100 and has a second audio input line 35 that is connected to the first audio input line 16. The vibration damping assembly 3 is located on the back of the loudspeaker assembly 1. When the loudspeaker assembly 1 is in operation, at least a portion of the vibration damping assembly 3 is vibratoryly disposed relative to at least one of the loudspeaker assembly 1 and the mounting base 100 to reduce the vibration of the mounting base 100.

[0068] By applying the technical solution of this embodiment, vibration reduction can be achieved through the internal structural design (rear vibration damping unit) and simple circuit components of the speaker module. When the speaker assembly 1 emits sound, due to Newton's third law (action and reaction forces), a major vibration reaction force is generated and transmitted to the mounting base 100 (door sheet metal). The vibration damping assembly 3 is connected to the first audio input line 16 through the second audio input line 35, receiving the same audio signal. This causes the two forces of similar magnitude and opposite direction to superimpose and cancel each other out in space, thereby significantly reducing the total vibration energy transmitted to the door sheet metal. This reduces the R&D cycle, mold cost, and manufacturing cost per vehicle, while taking into account both lightweight design and improved sound quality. This embodiment of the application solves the problem of bass resonance and abnormal noise in the car door in the prior art.

[0069] It should be noted that door resonance does not refer to causing the door to resonate, but rather to suppressing the resonance response of the door sheet metal by actively generating reverse vibrations. That is, the amplitudes can be different, but the vibration directions can be opposite, which can also play a role in noise reduction.

[0070] Furthermore, the audio input to the first audio input line 16 is the same as the audio input to the second audio input line 35.

[0071] In this embodiment, the working audio signal of the speaker assembly 1 is directly reused as the driving signal of the vibration damping unit, transforming the complex active control problem into a circuit parameter matching problem. Through simple passive component adjustment, the vibration of the main and auxiliary speakers is precisely canceled, thereby minimizing the complexity and cost of the vehicle's electronic system while ensuring sound quality and vibration damping effect.

[0072] It should be noted that when the audio is the same, through active control, the vibration damping component 3 generates vibrations that are opposite in phase to the speaker component 1. The mechanical vibration amplitudes generated by the two on the door sheet metal are equal in magnitude and opposite in direction, thus eliminating the resonance noise caused by the door vibration.

[0073] Furthermore, when the speaker assembly 1 is working, the vibration state of the speaker assembly 1 is out of phase with the vibration state of the damping assembly 3 at any given time.

[0074] In this embodiment, when the speaker emits sound, the diaphragm moves forward, pushing air to generate sound waves. Simultaneously, the speaker assembly 1 itself experiences a rearward reaction force, which is transmitted to the mounting base (door sheet metal). If the vibration state of the damping component 3 is completely out of phase with that of the speaker assembly 1 (i.e., a phase difference of 180°), that is, when the speaker assembly 1 generates a rearward reaction force, the damping component 3 generates a forward reaction force (or vice versa, depending on the specific mechanical connection definition; the key is that the directions of the forces are opposite). The superposition of two forces of similar magnitude and opposite direction in space reduces the net resultant vibration force transmitted to the door sheet metal. Door sheet metal resonance is caused by periodic excitation forces. When the excitation force is canceled out, the energy received by the sheet metal is significantly reduced, thus preventing the sheet metal from entering a resonance state. This solves the door resonance and noise problem without sacrificing sound quality, increasing vehicle weight, or altering the door structure.

[0075] Specifically, the speaker assembly 1 includes: a first support member 10, a first core post 18, a first permanent magnet 19, and a frame assembly 2. At least a portion of the first support member 10 is located within the mounting cavity 101 formed by the mounting base 100. The first core post 18 is connected to the first support member 10. The first permanent magnet 19 is connected to the first support member 10, and the first core post 18 is located within the inner circle of the first permanent magnet 19. The outer circumferential surface of the first core post 18 is spaced apart from the inner circumferential surface of the first permanent magnet 19. One end of the frame assembly 2 is connected to the mounting base 100, and the other end of the frame assembly 2 is connected to the first permanent magnet 19 via a first magnetic circuit clamp 17. The vibration damping assembly 3 is connected to the first support member 10, and the vibration damping assembly 3 is located on the side away from the first core post 18. At least a portion of the vibration damping assembly 3 is located within the mounting cavity 101.

[0076] The vibration damping assembly 3 is positioned on the back of the main speaker unit (on the side where the first core post 18 is located) and extends into the mounting cavity 101. This utilizes the gap between the door sheet metal and the interior trim panel, avoiding an increase in the overall size of the speaker and ensuring the flatness of the vehicle interior and ease of assembly. The first core post 18 is located within the inner circle of the first permanent magnet 19, forming a standard air gap magnetic field that drives the voice coil to vibrate and produce sound. The magnetic circuit system is securely connected to the vehicle body via the frame assembly 2 and the first magnetic circuit clamp 17, ensuring that the speaker assembly 1 will not loosen during high-speed vibration and guaranteeing acoustic stability. Furthermore, the mounting cavity 101 provides a certain degree of physical protection for the precision components of the vibration damping assembly 3 (such as the voice coil and magnetic circuit), reducing the risk of direct intrusion of external dust and moisture.

[0077] Furthermore, the vibration damping component 3 includes: a second support member 36, a third support member 31, a voice coil assembly, and a core assembly. One end of the second support member 36 is connected to the first support member 10, and the other end of the second support member 36 is connected away from the first support member 10. The second support member 36 and the first support member 10 form an accommodating space 361. The third support member 31 is disposed within the accommodating space 361 and is disposed opposite to the first support member 10. The third support member 31 is connected to the second support member 36 through a spider structure 37. The voice coil assembly is connected to the first support member 10 and is provided with a second audio input line 35. The core assembly is connected to the third support member 31 and is located between the third support member 31 and the first support member 10. A portion of the voice coil assembly extends into the core assembly.

[0078] In this embodiment, when the speaker assembly 1 is working, the first support member 10 is disturbed by the reaction force of the diaphragm (or vice versa, depending on the specific mechanical model; usually, the voice coil of the speaker assembly 1 drives the diaphragm, and the magnetic circuit is subjected to recoil). The vibration damping component 3 drives the magnetic circuit (third support member 31) to vibrate, and through circuit settings, its vibration direction is opposite to the force transmitted from the speaker assembly 1 to the door. The voice coil assembly directly transmits the vibration energy to the suspended magnetic circuit assembly through a rigid connection, and then the magnetic circuit assembly transmits it to the mounting base (door), thereby achieving precise force cancellation. The spider structure 37 ensures that the magnetic circuit assembly of the vibration damping component 3 can quickly return to the center position after vibration, avoiding vibration control failure caused by nonlinear distortion. Through the mechanical structure of fixed voice coil and vibrating magnetic circuit, the vibration damping unit is integrated into the magnetic circuit frame on the back of the speaker assembly 1, achieving anti-phase cancellation with the vibration of the speaker assembly 1, eliminating door resonance from the source, compressing the space volume, not increasing the load on the vehicle body, and reducing manufacturing costs.

[0079] It should be noted that the magnetic circuit assembly includes a first magnetic circuit clamping plate 17, a first core column 18, a first permanent magnet 19, a third support member 31, a second permanent magnet 32, a second magnetic circuit clamping plate 34, and a second core column 39.

[0080] Specifically, the core assembly includes: a second core 39 and a second permanent magnet 32. The first end of the second core 39 is connected to the third support member 31, and the second end of the second core 39 extends toward the side where the first core 18 is located. The end of the second end of the second core 39 is positioned at a distance from the first support member 10. The second permanent magnet 32 ​​is connected to the third support member 31. The second permanent magnet 32 ​​is positioned along the outer circumferential surface of the second core 39 and is located within the accommodating space 361. A second magnetic circuit clamp 34 is provided at the end of the second permanent magnet 32 ​​away from the third support member 31. A portion of the voice coil assembly extends between the inner circular surface of the second permanent magnet 32 ​​and the outer circumferential surface of the second core 39.

[0081] When the audio current passes through the stationary voice coil assembly, it experiences a Lorentz force in the magnetic field formed by the second permanent magnet 32 ​​and the second core post 39. Since the voice coil is fixed, the reaction force directly drives the magnetic circuit assembly to reciprocate. By precisely controlling the gap between the second core post 39 and the second permanent magnet 32, a high-intensity and uniform radial magnetic field is formed. The voice coil assembly, situated within this magnetic field, can obtain the maximum driving force with the minimum current, improving the conversion efficiency of electrical energy to mechanical vibration energy. The second magnetic circuit clamp 34, on the one hand, limits the axial displacement range of the magnetic circuit assembly, preventing the voice coil from rubbing against the coil or the magnet from colliding; on the other hand, it protects the internal precision magnetic circuit elements from the intrusion of external dust or foreign objects. The second end of the second core post 39 is positioned at a distance from the first support member 10, ensuring that the magnetic circuit assembly (second core post 39) of the vibration damping unit will not physically collide with the fixed frame (first support member 10) of the speaker assembly 1 during large-amplitude vibrations.

[0082] Specifically, a magnetic guide plate 33 is provided at the end of the second core post 39 facing the second support member 36, and part of the voice coil assembly is located between the magnetic guide plate 33 and the second magnetic circuit clamp 34.

[0083] Adding a magnetic guide plate 33 and positioning the voice coil assembly between the magnetic guide plate 33 and the second magnetic circuit clamp 34 enhances the magnetic field strength and uniformity, improves the conversion efficiency of electrical energy to mechanical vibration energy, improves the guidance and heat dissipation of the voice coil assembly, extends its service life, ensures the linearity of vibration, and reduces magnetic leakage, enabling the vibration damping unit to achieve a greater vibration damping effect with a smaller volume and material cost.

[0084] Furthermore, the voice coil assembly includes: a first voice coil 38, which is a ring structure, with a first end of the first voice coil 38 connected to the first support member 10, and a second end of the first voice coil 38 extending toward the side where the third support member 31 is located, and a second audio input line 35 electrically connected to the first voice coil 38, with the second end of the first voice coil 38 located between the magnetic plate 33 and the second magnetic circuit clamp 34.

[0085] In this embodiment, Newton's third law is used to convert electrical energy into mechanical vibration of the magnetic circuit component. The resonance of the speaker component 1 is canceled by the anti-phase vibration. The fixed voice coil improves the reliability of the electrical connection. The ring structure optimizes the magnetic effect and heat dissipation. The overall structure is compact and easy to integrate, which meets the requirements of car audio for space, cost and performance.

[0086] Furthermore, the speaker assembly 1 includes: a speaker diaphragm 11, which is horn-shaped, with the small-diameter end of the speaker diaphragm 11 disposed close to the first core post 18, and the large-diameter end of the speaker diaphragm 11 disposed away from the first core post 18, and the large-diameter end of the speaker diaphragm 11 is connected to the frame assembly 2 through the speaker surround 12.

[0087] In this embodiment, a conical diaphragm and surround suspension structure are used, providing good low-frequency radiation capability and linear response. The speaker surround 12 provides the necessary elasticity and restraint to protect the speaker from mechanical damage. Its defined axial vibration mode provides a clear target for the rear damping assembly 3, enabling the active damping technology to accurately counteract the main vibration source, thereby effectively solving the door resonance and noise problem without sacrificing sound quality.

[0088] In one embodiment of this application, the speaker surround 12 may be made of a flexible material (such as rubber, foam, or fabric) as an elastic element. When the diaphragm is driven off-center by the voice coil magnetic force, the speaker surround 12 generates a restoring force, ensuring that the diaphragm can quickly return to its equilibrium position after the signal stops, thereby reducing distortion.

[0089] Specifically, a speaker dust cap 13 is provided at the small diameter end of the speaker diaphragm 11. The speaker dust cap 13 is disposed opposite to the top of the first core post 18, and the speaker dust cap 13 is disposed protruding outward toward the outside of the speaker diaphragm 11.

[0090] By incorporating a protruding speaker dust cap 13, a physical protective barrier is created at a critical location of the main sound unit. This effectively prevents dust and moisture from entering the magnetic gap, avoids voice coil rubbing, improves the speaker's lifespan and stability in harsh automotive environments, enhances the rigidity of the diaphragm center, and helps improve high-frequency response and linearity. As an indispensable part of the speaker assembly 1, the speaker dust cap 13 ensures the stable performance of the main sound unit, thus providing a favorable condition for the rear vibration damping assembly 3 to achieve its optimal damping effect.

[0091] Furthermore, the speaker assembly 1 also includes: a second voice coil 15, which is connected to at least one of the speaker diaphragm 11 and the speaker dust cap 13; the end of the first core post 18 extends into the second voice coil 15; the outer diameter of the second voice coil 15 is smaller than the outer diameter of the first voice coil 38; and the first audio input line 16 is electrically connected to the second voice coil 15.

[0092] In this embodiment, a second voice coil 15 is introduced, and its connection relationship with the diaphragm and dust cap is defined, as well as its dimensional difference from the first voice coil 38. By strengthening the central rigidity of the diaphragm, split vibration is suppressed, and the sound quality across the entire frequency range is optimized. The multi-component connection improves tensile strength and dustproof effect. The dimensional difference and spatial layout ensure mechanical and electromagnetic isolation and coexistence between the main sound unit and the rear active damping unit. The compact design adapts to the limited space of the car door interlayer while ensuring the realization of the damping function.

[0093] Furthermore, the second magnetic circuit clamp 34 and the second support member 36 are connected by a spring structure 37.

[0094] In this embodiment, the moving magnetic circuit assembly (second magnetic circuit clamp 34) is flexibly suspended on the fixed frame (second support 36) by the spring structure 37, which ensures that the vibration damping is strictly opposite to the main vibration. By tuning the mechanical resonance frequency, the vibration damping energy output in the low frequency band is maximized, high frequency noise is suppressed, the vibration damping unit is prevented from interfering with the main audio playback, the movement stroke is limited, mechanical collision is prevented, and reliability is improved.

[0095] Furthermore, an inductor 41 is provided on the second audio input line 35.

[0096] In this embodiment, by introducing a passive phase correction element inductor 41 into the main control signal loop, the signal phase of the vibration damping unit is automatically adjusted by utilizing the current hysteresis characteristic of the inductor, ensuring that it is strictly out of phase with the vibration of the speaker assembly 1, thereby achieving maximum vibration cancellation. Phase correction can be achieved without chips or complex active control algorithms, reducing system cost and complexity, and improving the cancellation rate of vibration force between the vibration damping assembly 3 and the speaker assembly 1.

[0097] In one exemplary embodiment of this application, a capacitor 42 is provided on the second audio input line 35.

[0098] By using capacitor 42 in series, the phase is corrected by utilizing its leading current characteristic, ensuring that the damping component 3 vibrates in opposite phase to the speaker component 1. At the same time, the DC blocking protection function of capacitor 42 increases the safety of the system, and corrects the passive phase in a low-cost and efficient manner.

[0099] It should be noted that the DC blocking protection function of capacitor 42 means that the capacitor prevents the DC current that may damage the voice coil assembly and magnetic circuit from passing through, and only allows the AC signal representing music to pass through, thereby protecting the safety of the vibration damping assembly 3, extending its service life, and avoiding distortion or physical damage caused by DC bias.

[0100] In one exemplary embodiment of this application, an inductor 41 and a capacitor 42 are provided on the second audio input line 35.

[0101] By introducing passive phase correction elements inductor 41 and capacitor 42 into the main control signal loop, the phase mismatch problem caused by the mechanical characteristic difference between speaker assembly 1 and vibration damping unit is solved. High-precision active phase control is achieved at low cost, ensuring the stability of vibration damping effect, improving the reliability and mass production feasibility of the system. Through phase calibration, vibration cancellation efficiency is maximized, especially in the low frequency range where door resonance is most severe, achieving vibration reduction and noise reduction effect.

[0102] Furthermore, the mounting base 100 has a mounting cavity 101 for mounting the speaker assembly 1, and the vibration damping assembly 3 is connected to the bottom of the mounting cavity 101.

[0103] In this embodiment, the main sound unit and the vibration damping unit are integrated into a compact module. The main sound unit faces the interior of the vehicle and emits sound, while the vibration damping unit faces the door sheet metal to absorb vibration. They do not interfere with each other. The short path and rigid connection of the reverse vibration transmission maximize the cancellation efficiency, make full use of the interior space of the door, achieve high integration, simplify the assembly process, ensure the consistency of mass production, and the physical isolation reduces the potential interference of the vibration damping unit on the listening experience.

[0104] In one exemplary embodiment of this application, the vibration damping component 3 is located on the outside of the mounting cavity 101. Utilizing the solid mass of the outer door, it directly counteracts the resonance caused by the speaker assembly 1, isolating the potential mechanical noise of the vibration damping unit outside the vehicle compartment. It makes full use of the door interlayer space, does not interfere with interior installation, provides a stable mounting interface, and ensures long-term reliability.

[0105] Specifically, the vibration damping component 3 includes a second support 36 and a voice coil assembly. The second support 36 is connected to the bottom of the mounting cavity 101, and the first voice coil 38 of the voice coil assembly is connected to the bottom of the mounting cavity 101.

[0106] By setting up a fixed voice coil assembly, a fixed frame, and a moving magnetic circuit, an efficient, reliable, and easy-to-manufacture active vibration damping unit was constructed. The reaction force generated by the fixed voice coil assembly drives the magnetic circuit to vibrate, achieving efficient energy conversion and reliable electrical connection. The dual fixed points ensure the structural integrity of the vibration damping unit in dynamic working environments, and it is coplanarly mounted with speaker assembly 1, achieving precise cancellation of local door resonance.

[0107] According to another specific embodiment of this application, a vehicle audio system is also provided, which includes a speaker device, the speaker device being the same as that described in the above embodiment. Without altering the vehicle structure or adding expensive electronic equipment, the system solves the long-standing problem of door resonance and abnormal noise in vehicle subwoofers through mechanical and analog circuit methods, providing a purer and deeper bass effect and improving driving and passenger comfort.

[0108] In one exemplary embodiment of this application, the mounting base of the speaker device is the door sheet metal, the vehicle roof structure, or the body-in-white sheet metal, covering the three main audio installation areas of the door, roof, and body-in-white. This solves the problem of bass resonance and abnormal noise in the door, improves sound quality without increasing the weight of the vehicle body structure, meets the needs of lightweight and low-cost automotive development, not only improves the bass but also enhances the purity of the treble and midrange, eliminates the resonance discomfort of passengers' heads, and comprehensively improves the listening and riding experience.

[0109] According to another specific embodiment of this application, a vehicle is also provided, the vehicle including a vehicle audio system, the vehicle audio system being the vehicle audio system in the above embodiment. By integrating a damping component 3 with reverse vibration function on the back of the speaker assembly 1, and utilizing a drive circuit that shares audio signals with the speaker assembly 1, combined with a phase correction network formed by a series inductor 41 and / or capacitor 42, the damping component generates a reverse vibration with a phase difference of 180° and similar energy to the vibration of the speaker assembly 1; this solves the problem of resonance and abnormal noise caused by insufficient dynamic stiffness of the door sheet metal when traditional vehicle speakers play bass, as well as the defects of existing technical solutions that require customized sheet metal architecture or rely on expensive digital signal processors, resulting in high costs and difficulty in implementation; it achieves the technical effect of actively cancelling vibrations across the entire frequency band (especially the low frequency band) using passive analog circuits without changing the overall vehicle body structure or adding additional electronic control units, effectively reducing the vibration energy transmitted to the door sheet metal, improving the bass purity and listening experience of the vehicle audio system, and significantly reducing the system's R&D costs and development cycle.

[0110] According to another aspect of the invention, a loudspeaker device is also provided, such as Figure 1 As shown, the main sound-emitting unit on the front of the speaker assembly 1 is assembled in a traditional manner. The speaker diaphragm 11 is the main sound-emitting component and is connected to the speaker surround 12 by adhesive bonding. The speaker surround 12 mainly serves as a restoring force and is fixed to the frame assembly 2 by adhesive bonding. The speaker dust cap 13 is connected to the speaker diaphragm 11 by adhesive bonding and mainly serves to protect the internal magnetic circuit system from dust ingress. The speaker spring 14 is bonded to the speaker diaphragm 11 and mainly serves to support the entire vibration system. The second voice coil 15 is also bonded to the speaker diaphragm 11. A current signal is carried in the voice coil wire, which vibrates in the magnetic field with the audio signal, thereby driving the entire speaker diaphragm 11. The first audio input line 16 is connected to the connector to receive external audio signals. The first permanent magnet 19 and the second permanent magnet 32 ​​are magnetically conductive materials, which form a magnetic field space around the second voice coil 15.

[0111] The vibration damping unit on the back of the vibration damping assembly 3 is the main protected part of this application. The vibration damping assembly 3 adopts a voice coil fixing and magnetic circuit vibration design. The second core column 39 is connected to the second permanent magnet 32 ​​by bonding. The second magnetic circuit clamp 34 is bonded above the second permanent magnet 32. At the same time, a magnetic guide plate 33 is also connected above the third support member 31. Therefore, a stable magnetic field is formed between the magnetic guide plate 33 and the second magnetic circuit clamp 34. The overall magnetic circuit is connected to the support structure of the second support member 36 through the spring structure 37. The first voice coil 38 is fixed to the speaker body structure and shares an audio input with the entire speaker through the second audio input line 35.

[0112] As can be seen from the above description, the speaker device, vehicle audio system, and vehicle having the above embodiments have the following beneficial effects:

[0113] (1) Suppress door resonance and improve sound purity: By setting a damping component 3 on the back of the speaker, a reverse vibration with a phase difference of 180° and similar energy to the main sound unit is generated, which directly cancels the vibration energy transmitted to the door sheet metal from the source. It effectively solves the problem of resonance and abnormal noise caused by insufficient dynamic stiffness of the door sheet metal when the traditional door subwoofer plays bass (especially on highways), eliminates the interference of sheet metal resonance on the sound, and makes the bass tighter, deeper and purer, significantly improving the low frequency reproduction and listening experience.

[0114] (2) Low cost, low complexity, easy to mass production and implementation: Phase correction is performed by simple passive components (capacitors, inductors), without the need for additional chips, complex software algorithms or high-precision sensors, which simplifies the design of the vehicle wiring harness and host interface, and avoids the high material costs and mold development costs caused by increasing sheet metal thickness or changing the axial structure of the speaker.

[0115] (3) Compact structure and strong adaptability: The speaker unit is an independent module that can directly replace the traditional door speaker, realizing a "plug and play" upgrade solution. It does not require special customized reinforcement or reconstruction of the door sheet metal, roof or body-in-white, and retains the lightweight advantages of the original vehicle design. It is not only suitable for door sheet metal, but also for easily resonant parts such as vehicle roof structure and body-in-white sheet metal, and has broad versatility and platform application potential.

[0116] (4) Improve passenger comfort: When driving at high speed, the airflow noise is loud and the vehicle body vibration is severe. This solution can effectively suppress the most obvious door resonance at this time, ensure the stable performance of the audio system, reduce the structural noise transmitted from the speaker vibration to the interior of the car through the door frame, and improve the quietness of the whole vehicle.

[0117] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0118] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0119] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A loudspeaker device with resonant function, characterized in that, include: A speaker assembly (1) is connected to a mounting base (100) and has a first audio input line (16). A vibration damping component (3) is connected to one of the speaker assembly (1) and the mounting base (100). The vibration damping component (3) has a second audio input line (35) that is connected to the first audio input line (16). The vibration damping component (3) is located on the back of the speaker assembly (1). When the speaker assembly (1) is in operation, at least a portion of the vibration damping component (3) is vibratoryly disposed relative to at least one of the speaker assembly (1) and the mounting base (100) to reduce the vibration of the mounting base (100).

2. The loudspeaker device according to claim 1, characterized in that, The audio input through the first audio input line (16) is the same as the audio input through the second audio input line (35).

3. The loudspeaker device according to claim 1 or 2, characterized in that, When the loudspeaker assembly (1) is working, the vibration state of the loudspeaker assembly (1) is opposite to the vibration state of the vibration damping assembly (3) at any time.

4. The loudspeaker device according to claim 3, characterized in that, The speaker assembly (1) includes: The first support member (10), at least a portion of which is located within the mounting cavity (101) formed by the mounting base (100); The first core post (18) is connected to the first support member (10); The first permanent magnet (19) is connected to the first support member (10), and the first core column (18) is located inside the inner circle of the first permanent magnet (19). The outer circumferential surface of the first core column (18) is provided with a distance from the inner circle surface of the first permanent magnet (19). The basin frame assembly (2) is connected at one end to the mounting base (100) and at the other end to the first permanent magnet (19) via the first magnetic circuit clamp (17). The vibration damping assembly (3) is connected to the first support member (10) and is located on the side away from the first core column (18). At least part of the vibration damping assembly (3) is located in the mounting cavity (101).

5. The loudspeaker device according to claim 4, characterized in that, The vibration damping component (3) includes: The second support member (36) has one end connected to the first support member (10) and the other end connected away from the first support member (10). The second support member (36) and the first support member (10) form an accommodating space (361). The third support member (31) is disposed in the accommodating space (361), and the third support member (31) is disposed opposite to the first support member (10). The third support member (31) is connected to the second support member (36) through a spring structure (37). A voice coil assembly is connected to the first support member (10) and is provided with a second audio input line (35). A core post assembly is connected to the third support member (31) and located between the third support member (31) and the first support member (10), with a portion of the voice coil assembly extending into the core post assembly.

6. The loudspeaker device according to claim 5, characterized in that, The core assembly includes: The second core column (39) has a first end connected to the third support member (31), and the second end of the second core column (39) extends toward the side where the first core column (18) is located. The end of the second end of the second core column (39) is provided at a distance from the first support member (10). The second permanent magnet (32) is connected to the third support member (31). The second permanent magnet (32) is disposed along the outer peripheral surface of the second core column (39). The second permanent magnet (32) is located in the receiving space (361). The end of the second permanent magnet (32) away from the third support member (31) is provided with a second magnetic circuit clamp (34). Part of the voice coil assembly extends between the inner circular surface of the second permanent magnet (32) and the outer peripheral surface of the second core column (39).

7. The loudspeaker device according to claim 6, characterized in that, The end of the second core post (39) facing the second support member (36) is provided with a magnetic guide plate (33), and part of the voice coil assembly is located between the magnetic guide plate (33) and the second magnetic circuit clamp (34).

8. The loudspeaker device according to claim 7, characterized in that, The voice coil assembly includes: The first voice coil (38) is a ring structure. The first end of the first voice coil (38) is connected to the first support member (10). The second end of the first voice coil (38) extends toward the side where the third support member (31) is located. The second audio input line (35) is electrically connected to the first voice coil (38). The second end of the first voice coil (38) is located between the magnetic guide plate (33) and the second magnetic circuit clamp (34).

9. The loudspeaker device according to claim 8, characterized in that, The speaker assembly (1) includes: The speaker diaphragm (11) is horn-shaped. The small diameter end of the speaker diaphragm (11) is located close to the first core post (18), and the large diameter end of the speaker diaphragm (11) is located away from the first core post (18). The large diameter end of the speaker diaphragm (11) is connected to the frame assembly (2) through the speaker surround (12).

10. The loudspeaker device according to claim 9, characterized in that, The small-diameter end of the speaker diaphragm (11) is provided with a speaker dust cap (13), which is disposed opposite to the top of the first core post (18), and the speaker dust cap (13) is disposed protruding outward toward the outside of the speaker diaphragm (11).

11. The loudspeaker device according to claim 10, characterized in that, The speaker assembly (1) further includes: The second voice coil (15) is connected to at least one of the speaker diaphragm (11) and the speaker dust cap (13), the end of the first core post (18) extends into the second voice coil (15), the outer diameter of the second voice coil (15) is smaller than the outer diameter of the first voice coil (38), and the first audio input line (16) is electrically connected to the second voice coil (15).

12. The loudspeaker device according to claim 8, characterized in that, The second magnetic circuit clamp (34) and the second support member (36) are connected by the elastic structure (37).

13. The loudspeaker device according to claim 1, characterized in that, The second audio input line (35) is provided with at least one of an inductor (41) and a capacitor (42).

14. The loudspeaker device according to claim 3, characterized in that, The mounting base (100) has a mounting cavity (101) for mounting the speaker assembly (1), and the vibration damping assembly (3) is connected to the bottom of the mounting cavity (101).

15. The loudspeaker device according to claim 14, characterized in that, The vibration damping component (3) is located on the outside of the mounting cavity (101).

16. The loudspeaker device according to claim 14 or 15, characterized in that, The vibration damping component (3) includes a second support (36) and a voice coil assembly. The second support (36) is connected to the bottom of the mounting cavity (101), and the first voice coil (38) of the voice coil assembly is connected to the bottom of the mounting cavity (101).

17. A vehicle audio system, comprising a speaker assembly, characterized in that, The loudspeaker device is the loudspeaker device according to any one of claims 1 to 16.

18. The vehicle audio system according to claim 17, characterized in that, The mounting base for the speaker device is the door sheet metal, the vehicle roof structure, or the body-in-white sheet metal.

19. A vehicle, comprising an in-vehicle audio system, characterized in that, The vehicle audio system is the vehicle audio system described in claim 17 or 18.

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