Acoustic optimization equipment of vehicle-mounted loudspeaker
Through the cylindrical acoustic optimization of the cavity and silence column structure, the problem of insufficient acoustic performance of the vehicle speakers is solved, compact acoustic optimization is achieved, and sound quality and adaptability are improved.
Patent Information
- Application Number
- CN202422621222.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The acoustic performance of vehicle-mounted speakers is affected by the complex space structure and materials of the car, resulting in insufficient low-frequency response, turbid sound, poor sound field positioning and resonance. Traditional optimization methods require space or replacement of speakers.
The cylindrical acoustic optimization cavity and silence column structure is adopted, and the speaker rear cavity is connected through the cylindrical cavity to provide additional acoustic space. The silence column absorbs and scatters sound waves, and combines the audio interface and adjustment board design to achieve acoustic optimization.
Effectively expand speaker low-frequency response, reduce sound turbidity, suppress resonance and noise, improve sound quality clarity and balance, adapt to different speakers and environments, and simplify the installation process.
Smart Images
Figure CN223285933U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile extension accessories, in particular to an acoustic optimization device for a vehicle-mounted speaker. Background Art
[0002] Car speakers play an important role in providing in-car entertainment and information broadcasting.
[0003] However, due to factors such as the complex interior structure, limited speaker installation locations, and the reflection and absorption of sound waves by various materials within the vehicle, achieving ideal acoustic performance for in-vehicle speakers is often difficult. Common issues include insufficient low-frequency response, muddy sound, poor soundstage positioning, resonance, and noise.
[0004] Traditional acoustic optimization methods include improving the design of the speaker unit itself, using special cabinet structures, adding sound-absorbing materials, etc. However, these methods often require taking up a large amount of space in the car or replacing the original car speakers.
[0005] Therefore, a more compact vehicle speaker acoustic optimization device is needed to improve the sound quality experience of the vehicle speaker. Utility Model Content
[0006] To overcome the problems of the related art, the present invention aims to provide an acoustic optimization device for a vehicle-mounted speaker. This device utilizes a cylindrical acoustic optimization cavity and a muffler column structure to overcome the poor sound field localization issues found in the prior art. Furthermore, the device is compact and eliminates the need to replace existing speakers.
[0007] An acoustic optimization device for a vehicle-mounted speaker, comprising:
[0008] A cylindrical acoustic optimization cavity, one end of which is provided with an opening for docking with the rear cavity of the vehicle speaker, and the other end is a closed end;
[0009] An audio interface is provided on the closed end and passes through the acoustic optimization cavity. The audio interface includes a first interface located outside the acoustic optimization cavity and a second interface located inside the acoustic optimization cavity. The second interface is connected to an audio connection electrically connected to a vehicle speaker.
[0010] The inner end surface of the acoustic optimization cavity is provided with a plurality of silencer columns, and the plurality of silencer columns are arranged along the depth direction of the acoustic optimization cavity.
[0011] The cylindrical cavity connects to the speaker's rear chamber, creating an additional acoustic space that effectively extends the speaker's low-frequency response and reduces direct radiation from the rear chamber, thereby reducing sound muddiness and enhancing clarity. Furthermore, the muffler column structure within the cavity absorbs and scatters sound waves at specific frequencies, further suppressing cavity resonance, reducing noise and distortion, and resulting in a purer sound. The audio port located on the closed end facilitates connection to the speaker and audio wiring, simplifying installation.
[0012] In some embodiments, the silencing columns are arranged into three groups of annular arrays along the radius of the acoustic optimization cavity, and the lengths of the three groups of silencing columns increase successively in the direction away from the axis of the acoustic optimization cavity.
[0013] By designing the muffler columns as three radially arranged ring arrays with increasing lengths, they can more effectively absorb and scatter sound waves of different frequencies. This design allows for better control of the sound field distribution within the cavity, effectively suppressing resonances and improving sound clarity and balance, with a particularly significant suppression of low-frequency resonances.
[0014] In some embodiments, the height of each group of the silencer columns is distributed in a wave shape along the annular direction.
[0015] The wavy height distribution of the silencer column can increase the surface area of the silencer column and form an irregular surface, further enhancing the scattering effect of sound waves, widening the sound absorption band, thereby improving the absorption capacity of sounds of different frequencies and making the sound smoother and more natural.
[0016] In some embodiments, a sound cavity adjustment plate is further provided on the inner end face of the acoustic optimization cavity, and the sound cavity adjustment plate is slidingly connected to the acoustic optimization cavity. A plurality of through holes are opened on the sound cavity adjustment plate, and the plurality of through holes correspond one-to-one to the silencer column and the audio interface respectively, and the through holes are slidingly connected to the silencer column and the audio interface.
[0017] The design of the sound cavity adjustment plate and through-hole makes it possible to change the effective volume of the acoustic optimization cavity by adjusting the position of the sound cavity adjustment plate, thereby flexibly adjusting the resonant frequency of the cavity to achieve optimal adaptation to different speakers and different vehicle cabin environments, achieving more precise acoustic optimization effects, improving the adjustability of sound quality, and meeting personalized needs.
[0018] In some embodiments, a plurality of sliders are provided on the edge of the sound cavity adjustment plate, and a plurality of slide rails are provided on the inner wall of the acoustic optimization cavity. The slide rails are arranged corresponding to the sliders, and the slide rails are arranged along the depth direction of the acoustic optimization cavity.
[0019] The design of the slider and the slide rail makes the sliding of the sound cavity adjustment plate smoother and more stable, which is convenient for users to adjust. It can also accurately control the position of the adjustment plate, improve the accuracy of the sound cavity adjustment, and make the sound quality adjustment more refined.
[0020] In some embodiments, an adjustment rod is provided on a side surface of the sound cavity adjustment plate close to the closed end, the adjustment rod passes through the closed end, and the adjustment rod is slidably connected to the closed end.
[0021] The design of the adjustment rod allows users to easily adjust the position of the sound cavity adjustment plate from the outside of the acoustic optimization cavity without having to disassemble the device, greatly improving the convenience of adjustment and facilitating users to make faster adjustments according to different music types or listening preferences.
[0022] In some embodiments, each of the sliders is provided with the adjusting rod, and the adjusting rod is integrally formed with the slider.
[0023] In some embodiments, a sound absorbing layer is further provided in the acoustic optimization cavity, and the sound absorbing layer is provided on the inner end surface of the acoustic optimization cavity.
[0024] The sound-absorbing layer can absorb excess sound wave energy in the cavity, reduce sound wave reflection and standing waves, reduce cavity resonance, further improve the purity of the sound, and reduce noise and distortion.
[0025] In some embodiments, a special-shaped sound-absorbing structure is provided on one side of the sound-absorbing layer close to the opening of the acoustic optimization cavity, and the special-shaped sound-absorbing structure is used to change the propagation path of the sound waves.
[0026] The special-shaped sound-absorbing structure near the opening of the cavity can change the propagation path of sound waves and more effectively absorb sound waves of specific frequencies, especially high-frequency sound waves, thereby further improving the clarity and detail of the sound.
[0027] In some embodiments, the special-shaped sound-absorbing structure is a wave-shaped structure, and the wave-shaped structure spreads from the center to the surrounding areas.
[0028] The wave-shaped special-shaped sound-absorbing structure can increase the sound-absorbing area and enhance the scattering and absorption of sound waves through the wave shape, effectively widening the sound absorption band, improving the absorption effect of sounds of different frequencies, and making the sound more balanced and natural.
[0029] The beneficial effects of the utility model are:
[0030] The utility model provides an acoustic optimization device for a vehicle-mounted speaker, which includes a cylindrical acoustic optimization cavity, one end of which is open for docking with the rear cavity of the vehicle-mounted speaker; the other end is closed and provided with an audio interface that runs through the cavity. The audio interface is divided into two parts, inside and outside the cavity, and the inner part is connected to the audio wiring of the speaker. A plurality of silencer columns arranged along the depth direction of the cavity are also provided on the inner end face of the acoustic optimization cavity. Connecting the rear cavity of the speaker through the cylindrical cavity provides an additional acoustic space, which can effectively expand the low-frequency response of the speaker and reduce the direct radiation of sound waves from the rear cavity of the speaker, thereby reducing the turbidity of the sound and improving the clarity of the sound quality. At the same time, the silencer column structure in the cavity can absorb and scatter sound waves of specific frequencies, further suppressing cavity resonance, reducing noise and distortion, and making the sound purer. The audio interface located at the closed end facilitates the connection between the speaker and the audio wiring and simplifies the installation process. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 Schematic diagram of the open end side of the acoustic optimization device for the vehicle-mounted speaker provided in Example 1 of the present application;
[0032] Figure 2 Schematic diagram of the closed end side of the acoustic optimization device for the vehicle-mounted speaker provided in Example 1 of the present application;
[0033] Figure 3 Schematic diagram of the open end side of the acoustic optimization device for the vehicle-mounted speaker provided in Example 2 of the present application;
[0034] Figure 4 This is an exploded view of the acoustic optimization device for the vehicle-mounted speaker provided in Example 2 of this application.
[0035] Reference numerals:
[0036] 100, acoustically optimized cavity; 110, audio interface; 120, muffler column; 130, slide rail;
[0037] 200, sound cavity adjustment plate; 210, through hole; 220, adjustment rod. DETAILED DESCRIPTION
[0038] The following describes preferred embodiments of the present invention in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0039] Example 1
[0040] like Figures 1-4 As shown, this embodiment provides an acoustic optimization device for a vehicle-mounted speaker, and the acoustic optimization device for the vehicle-mounted speaker includes:
[0041] A cylindrical acoustic optimization cavity 100, one end of which is provided with an opening for docking with the rear cavity of the vehicle speaker, and the other end is a closed end;
[0042] The closed end is provided with an audio interface 110 that passes through the acoustic optimization cavity 100. The audio interface 110 includes a first interface located outside the acoustic optimization cavity 100 and a second interface located inside the acoustic optimization cavity 100. The second interface is connected to an audio connection electrically connected to a vehicle speaker.
[0043] A plurality of silencer columns 120 are provided on the inner end surface of the acoustic optimization cavity 100 , and the plurality of silencer columns 120 are arranged along the depth direction of the acoustic optimization cavity 100 .
[0044] Furthermore, the silencing columns 120 are arranged into three groups of annular arrays along the radial direction of the acoustic optimization cavity, and the lengths of the three groups of silencing columns 120 increase successively in the direction away from the axis of the acoustic optimization cavity 100.
[0045] Specifically, each group of silencer columns 120 includes 23 silencer columns 120 , which means that the interval between adjacent silencer columns 120 in each group is 360 degrees divided by 23 degrees, which is approximately 15.65 degrees.
[0046] More specifically, the audio interface 110 is positioned near the outside. Due to the presence of the audio interface 110, the two outer groups of muffler columns 120 that conflict with the audio interface 110 are canceled. That is, in this embodiment, the innermost group of muffler columns 120 has 23 columns, while the two outer groups of muffler columns 120 each have 21 columns, with the three groups of muffler columns 120 spaced apart. The outermost group of muffler columns 120 is the tallest, the middle group of muffler columns 120 is the second tallest, and the innermost group of muffler columns 120 is the shortest. The radius of the three groups of muffler columns 120 can be the same or different. In this embodiment, the radius of the three groups of muffler columns 120 is the same.
[0047] Furthermore, the height of each group of the silencer columns 120 is distributed in a wave shape along the annular direction.
[0048] In this embodiment, each group of silencer columns 120 has two crests and two troughs. The heights of the crests and the troughs may be the same or different. In this embodiment, the heights of the crests and the troughs are the same.
[0049] The acoustic optimization device for a vehicle speaker provided in this embodiment effectively absorbs and scatters sound waves of varying frequencies by placing three ring-shaped muffler columns 120 within the speaker cavity. These muffler columns 120 are arranged at specific angles and heights, allowing for more precise control of the sound field distribution within the cavity. This effectively suppresses resonance at specific frequencies, reduces noise and distortion, and enhances sound clarity and balance.
[0050] Example 2
[0051] like Figures 1-4 As shown, this embodiment provides an acoustic optimization device for a vehicle-mounted speaker, and the acoustic optimization device for the vehicle-mounted speaker includes:
[0052] A cylindrical acoustic optimization cavity 100, one end of which is provided with an opening for docking with the rear cavity of the vehicle speaker, and the other end is a closed end;
[0053] The closed end is provided with an audio interface 110 that passes through the acoustic optimization cavity 100. The audio interface 110 includes a first interface located outside the acoustic optimization cavity 100 and a second interface located inside the acoustic optimization cavity 100. The second interface is connected to an audio connection electrically connected to a vehicle speaker.
[0054] A plurality of silencer columns 120 are provided on the inner end surface of the acoustic optimization cavity 100 , and the plurality of silencer columns 120 are arranged along the depth direction of the acoustic optimization cavity 100 .
[0055] Specifically, the acoustically optimized cavity 100 is cylindrical and can be made of materials such as ABS plastic or other materials with excellent acoustic properties, balancing lightweight construction with structural strength. An opening is located at one end of the cavity, the shape and size of which are designed to match the rear cavity of a specific model of in-vehicle speaker, ensuring a tight connection and minimizing sound leakage.
[0056] More specifically, audio interface 110 extends through the closed end, connecting the inside and outside of the cavity. The first, outer interface utilizes standard wiring terminals for easy connection to the vehicle's audio system. The second, inner interface connects to the audio cable connected to the speaker via quick-connect terminals, ensuring stable signal transmission.
[0057] Furthermore, a sound cavity adjustment plate 200 is provided on the inner end face of the acoustic optimization cavity 100, and the sound cavity adjustment plate 200 is slidably connected to the acoustic optimization cavity 100. A plurality of through holes 210 are opened on the sound cavity adjustment plate 200, and the plurality of through holes 210 correspond one-to-one to the silencer column 120 and the audio interface 110 respectively, and the through holes 210 are slidably connected to the silencer column 120 and the audio interface 110.
[0058] Furthermore, the edge of the sound cavity adjustment plate 200 is provided with multiple sliders, and the inner wall of the acoustic optimization cavity 100 is provided with multiple slide rails 130. The slide rails 130 are arranged corresponding to the sliders, and the slide rails 130 are arranged along the depth direction of the acoustic optimization cavity 100.
[0059] The sound cavity adjustment plate 200 is made of ABS plastic or other lightweight, durable materials and is slidably connected to the acoustically optimized cavity 100. The adjustment plate is provided with multiple through-holes 210, corresponding to the muffler columns 120 and audio interface 110, allowing them to pass through and slide with the adjustment plate. By sliding the adjustment plate, the effective volume of the acoustically optimized cavity 100 can be changed, thereby adjusting the cavity's resonant frequency and optimizing acoustic performance for different speakers and vehicle cabin environments.
[0060] Furthermore, an adjustment rod 220 is provided on one side of the sound cavity adjustment plate 200 close to the closed end. The adjustment rod 220 passes through the closed end and is slidably connected to the closed end.
[0061] Specifically, the adjustment rod 220 and the acoustic optimization cavity 100 are interference fit.
[0062] Furthermore, each of the sliders is provided with the adjusting rod 220 , and the adjusting rod 220 and the slider are integrally formed.
[0063] More specifically, the edge of the sound cavity adjustment plate 200 is provided with multiple sliders, which cooperate with the slide rails 130 on the inner wall of the cavity to ensure that the adjustment plate slides smoothly and stably. The shape of the slide rails 130 can be designed to be, for example, a dovetail groove or other structure that can effectively prevent the sliders from detaching.
[0064] More specifically, the adjustment rod 220 is positioned on the side of the sound cavity adjustment plate 200 near the closed end, passing through the closed end and slidingly connected thereto, allowing the user to adjust the position of the sound cavity adjustment plate 200 from the outside. An interference fit is employed between the adjustment rod 220 and the closed end, ensuring a tight connection while allowing the adjustment rod 220 to slide. To further enhance the user experience, the top of the adjustment rod 220 can be designed with a scale to facilitate fine-tuning and memorizing the optimal position.
[0065] The acoustic optimization device for a vehicle-mounted speaker provided in this embodiment, by adding a cavity adjustment plate 200, a slider, a slide rail 130, and an adjustment rod 220, allows the user to conveniently adjust the effective volume of the cavity, thereby flexibly controlling the cavity's resonant frequency. This adjustable design better adapts to the acoustic characteristics of different speakers and different vehicle cabin environments, achieving more precise acoustic optimization and meeting the user's personalized listening needs. It also facilitates external adjustments, improving ease of use.
[0066] Example 3
[0067] like Figures 1-4 As shown, this embodiment provides an acoustic optimization device for a vehicle-mounted speaker, and the acoustic optimization device for the vehicle-mounted speaker includes:
[0068] A cylindrical acoustic optimization cavity 100, one end of which is provided with an opening for docking with the rear cavity of the vehicle speaker, and the other end is a closed end;
[0069] The closed end is provided with an audio interface 110 that passes through the acoustic optimization cavity 100. The audio interface 110 includes a first interface located outside the acoustic optimization cavity 100 and a second interface located inside the acoustic optimization cavity 100. The second interface is connected to an audio connection electrically connected to a vehicle speaker.
[0070] A plurality of silencer columns 120 are provided on the inner end surface of the acoustic optimization cavity 100 , and the plurality of silencer columns 120 are arranged along the depth direction of the acoustic optimization cavity 100 .
[0071] Furthermore, a sound absorbing layer is provided in the acoustic optimization cavity 100 , and the sound absorbing layer is provided on the inner end surface of the acoustic optimization cavity 100 .
[0072] Specifically, a sound-absorbing layer is placed on the inner wall of the cavity. This layer, composed of, for example, porous or fibrous sound-absorbing materials, further absorbs excess sound energy within the cavity, reducing sound reflections and the generation of standing waves. The thickness and material type of the sound-absorbing layer can be selected based on actual needs to achieve optimal sound absorption. The sound-absorbing layer can be glued or secured to the inner wall of the cavity using clips to ensure secure installation.
[0073] Furthermore, a special-shaped sound-absorbing structure is provided on one side of the sound-absorbing layer close to the opening of the acoustic optimization cavity 100 , and the special-shaped sound-absorbing structure is used to change the propagation path of the sound waves.
[0074] More specifically, a special-shaped sound-absorbing structure is provided on one side of the sound-absorbing layer close to the cavity opening to change the propagation path of the sound waves and improve the sound absorption efficiency.
[0075] In this embodiment, the shaped sound-absorbing structure is wavy, spreading outward from the center. This structure increases the sound absorption area and, through the wavy shape, enhances the scattering and absorption of sound waves, effectively widening the sound absorption band and improving the absorption of sounds of different frequencies, resulting in a more balanced and natural sound. The shaped sound-absorbing structure can be made of the same material as the sound-absorbing layer, or other materials with better sound absorption properties, such as sound-absorbing cotton with a specific density and porosity.
[0076] The acoustic optimization device for a vehicle speaker provided in this embodiment further enhances sound absorption, particularly high-frequency sound waves, by adding a sound-absorbing layer and a contoured sound-absorbing structure. The sound-absorbing layer effectively reduces sound reflection within the cavity and the generation of standing waves, while the contoured sound-absorbing structure near the cavity opening redirects the sound wave propagation path, improving sound absorption efficiency and thus further enhancing sound clarity, detail, and overall sound quality.
[0077] Unless otherwise specifically stated, the relative arrangement, numerical expression and numerical value of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that: similar reference numerals and letters represent similar items in the accompanying drawings below, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the accompanying drawings subsequently.
[0078] In addition, it should be noted that the use of terms such as "first" and "second" for limitation is only for the convenience of distinction. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. An acoustic optimization device for a vehicle-mounted speaker, characterized in that: include: A cylindrical acoustic optimization cavity (100), wherein one end of the acoustic optimization cavity (100) is provided with an opening for docking with a rear cavity of a vehicle-mounted speaker, and the other end is a closed end; An audio interface (110) penetrating the acoustic optimization cavity (100) is provided on the closed end, the audio interface (110) comprising a first interface located outside the acoustic optimization cavity (100) and a second interface located inside the acoustic optimization cavity (100), the second interface being connected to an audio connection electrically connected to a vehicle-mounted speaker; The inner end surface of the acoustic optimization cavity (100) is provided with a plurality of silencer columns (120), and the plurality of silencer columns (120) are arranged along the depth direction of the acoustic optimization cavity (100).
2. The acoustic optimization device for a vehicle-mounted speaker according to claim 1, characterized in that: The muffler columns (120) are arranged in three groups of annular arrays along the radial direction of the acoustic optimization cavity, and the lengths of the three groups of muffler columns (120) increase in sequence along the direction away from the axis of the acoustic optimization cavity (100).
3. The acoustic optimization device for a vehicle-mounted speaker according to claim 2, characterized in that: The height of each group of the muffler columns (120) is distributed in a wave shape along the annular direction.
4. The acoustic optimization device for a vehicle-mounted speaker according to any one of claims 1 to 3, characterized in that: A sound cavity adjustment plate (200) is further provided on the inner end surface of the acoustic optimization cavity (100), and the sound cavity adjustment plate (200) is slidably connected to the acoustic optimization cavity (100). A plurality of through holes (210) are provided on the sound cavity adjustment plate (200), and the plurality of through holes (210) correspond one-to-one to the muffler column (120) and the audio interface (110), respectively. The through holes (210) are slidably connected to the muffler column (120) and the audio interface (110).
5. The acoustic optimization device for a vehicle-mounted speaker according to claim 4, characterized in that: The edge of the sound cavity adjustment plate (200) is provided with a plurality of sliders, the inner wall of the acoustic optimization cavity (100) is provided with a plurality of slide rails (130), the slide rails (130) are arranged corresponding to the sliders, and the slide rails (130) are arranged along the depth direction of the acoustic optimization cavity (100).
6. The acoustic optimization device for a vehicle-mounted speaker according to claim 5, characterized in that: An adjustment rod (220) is provided on a side surface of the sound cavity adjustment plate (200) close to the closed end. The adjustment rod (220) passes through the closed end and is slidably connected to the closed end.
7. The acoustic optimization device for a vehicle-mounted speaker according to claim 6, characterized in that: Each of the sliders is provided with the adjusting rod (220), and the adjusting rod (220) and the slider are integrally formed.
8. The acoustic optimization device for a vehicle-mounted speaker according to claim 1, characterized in that: A sound absorbing layer is further provided in the acoustic optimization cavity (100), and the sound absorbing layer is provided on the inner end surface of the acoustic optimization cavity (100).
9. The acoustic optimization device for a vehicle-mounted speaker according to claim 8, characterized in that: A special-shaped sound-absorbing structure is provided on one side of the sound-absorbing layer close to the opening of the acoustic optimization cavity (100), and the special-shaped sound-absorbing structure is used to change the propagation path of the sound wave.
10. The acoustic optimization device for a vehicle-mounted speaker according to claim 9, characterized in that: The special-shaped sound-absorbing structure is a wave-shaped structure, and the wave-shaped structure spreads from the center to the surrounding areas.