A sound insulation test demonstration device

Abstract

This utility model relates to a sound insulation testing and demonstration device for testing and demonstrating the sound insulation and vibration damping effects of different sound insulation materials. It includes a transparent shell, a sound source structure, a vibration structure, and a data acquisition structure. The transparent shell has a sound transmission hole positioned near the vibration structure. A horizontal mounting plate and a horizontal mounting frame are spaced apart within the inner cavity of the transparent shell. The sound source structure includes a loudspeaker fixedly mounted on the horizontal mounting plate. The vibration structure includes a sheet metal and a magnetic assembly. The sheet metal is fixedly connected to the horizontal mounting frame, and the magnetic assembly is used to fix the sheet metal and the sound insulation material together. The data acquisition structure includes a decibel meter, which is installed on both the horizontal mounting plate and at the sound insulation material.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation control, specifically to a sound insulation testing and demonstration device. Background Technology

[0002] In today's society, noise pollution has become the second largest environmental threat to human health and quality of life after air pollution, seriously affecting people's quality of life and work efficiency. Whether it is resisting external noise from traffic and construction in residential environments or reducing noise generated by equipment operation in industrial sites, effective sound insulation control is crucial. In recent years, the research and development of sound insulation materials and technologies has been a research hotspot in related fields. However, in terms of sound insulation performance evaluation, there has always been a lack of testing and demonstration methods that are intuitive, convenient, and accurate.

[0003] Traditional sound insulation testing systems rely on sophisticated professional equipment and special acoustic environments, such as anechoic chambers. These facilities are expensive, require highly skilled personnel, and involve lengthy testing and demonstration cycles, making it difficult to conduct frequent and routine sound insulation performance assessments during daily research, teaching, and product demonstrations. Besides traditional acoustic testing facilities, existing portable testing equipment is also commonly used in sound insulation testing due to its lower barrier to entry. However, portable testing equipment is also limited by testing conditions and methods, and cannot comprehensively and accurately simulate actual noise propagation and sound insulation processes. Furthermore, the evaluation results may deviate from the actual sound insulation effect. Utility Model Content

[0004] In view of the deficiencies of the prior art described above, the technical problem to be solved by this utility model is to provide a sound insulation testing and demonstration device that can accurately test and intuitively demonstrate the sound insulation and vibration damping effects of different materials, and is applicable to various scenarios such as the research and development of sound insulation materials, teaching demonstrations, and product demonstrations.

[0005] To achieve the above objectives, this utility model provides a sound insulation testing and demonstration device for testing and demonstrating the sound insulation and vibration damping effects of different sound insulation materials. It includes a transparent shell, a sound source structure, a vibration structure, and a data acquisition structure. The transparent shell has a sound transmission hole positioned near the vibration structure. A horizontal mounting plate and a horizontal mounting frame are spaced apart within the inner cavity of the transparent shell. The sound source structure includes a loudspeaker fixedly mounted on the horizontal mounting plate. The vibration structure includes a sheet metal and a magnetic assembly. The sheet metal is fixedly connected to the horizontal mounting frame, and the magnetic assembly is used to fix the sheet metal and the sound insulation material together. The data acquisition structure includes a decibel meter, which is installed on both the horizontal mounting plate and at the sound insulation material.

[0006] Furthermore, the transparent housing includes a cubic frame and a top cover disposed on the cubic frame. The horizontal mounting plate and the horizontal mounting frame are both disposed inside the cubic frame and are both square in shape. The joint between the cubic frame and the top cover is provided with a silicone sealing strip and a rubber gasket.

[0007] Furthermore, the transparent shell is made of acrylic.

[0008] Furthermore, the sound source structure also includes a rubber vibration damping bracket, which is fixedly connected to a horizontal mounting plate, and the speaker is fixedly mounted on the rubber vibration damping bracket.

[0009] Furthermore, the speaker is configured as a 6.5-inch full-range speaker.

[0010] Furthermore, the sheet metal is fixedly connected to the transverse mounting frame by bolts, the thickness of the sheet metal is set to 0.8mm, and the sheet metal has multiple micro-holes with a diameter of 0.5mm.

[0011] Furthermore, the data acquisition structure also includes a vibration sensor mounted on the sheet metal.

[0012] Furthermore, the data acquisition structure also includes an oscilloscope, which is electrically connected to the vibration sensor.

[0013] Furthermore, the data acquisition structure also includes a spectrum analyzer, which is electrically connected to an oscilloscope.

[0014] Furthermore, the data acquisition structure also includes a recording device disposed outside the transparent housing.

[0015] As described above, the sound insulation testing demonstration device of this utility model has the following beneficial effects:

[0016] By using a transparent shell, the device can intuitively demonstrate the propagation and vibration of noise in different media. By setting up a sound source structure, it can play specific noises and ensure consistency in each test. By setting up a vibration structure, it can simulate the propagation and vibration of noise in different media and reduce vibration and sound insulation. By setting up a sound transmission hole and a data acquisition structure, it can intuitively and accurately demonstrate and compare the sound insulation and vibration damping effects of different materials. It is simple to operate, low in cost, and highly repeatable, making it suitable for various scenarios such as sound insulation material research and development, teaching demonstrations, and product demonstrations. In the process of sound insulation material research and development, researchers can use the sound insulation testing demonstration device to quickly screen out sound insulation materials with good sound insulation and vibration damping effects, providing a basis for further research and improvement. In the teaching process, instructors can use the sound insulation testing demonstration device to intuitively and accurately demonstrate the principles of sound insulation and the differences in sound insulation between different materials to students, simulating the actual noise propagation process and improving students' learning interest and understanding. In product demonstrations, businesses can use the sound insulation testing demonstration device to showcase the effects of their sound insulation products to customers, enhancing customer confidence in purchasing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sound insulation test demonstration device of this utility model.

[0018] Figure 2 This is a side view of the sound insulation test demonstration device of this utility model.

[0019] Figure 3 This is a schematic diagram of the vibration structure and the transverse mounting frame structure in this utility model.

[0020] Figure 4 This is a schematic diagram of the sound insulation material and magnetic component in this utility model.

[0021] Explanation of icon numbers

[0022] 1. Transparent shell; 101. Sound transmission hole; 102. Horizontal mounting plate; 103. Horizontal mounting frame; 104. Cube frame; 105. Top cover; 2. Speaker; 3. Rubber shock-absorbing bracket; 4. Sheet metal; 5. Magnetic assembly; 6. Sound insulation material; 7. Data acquisition structure; 8. Bolts. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0024] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] See Figures 1 to 4 This utility model provides a sound insulation testing and demonstration device for testing and demonstrating the sound insulation and vibration damping effects of different sound insulation materials 6. It includes a transparent shell 1, a sound source structure, a vibration structure, and a data acquisition structure 7. A sound transmission hole 101 is opened on the transparent shell 1 and is positioned close to the vibration structure. A horizontal mounting plate 102 and a horizontal mounting frame 103 are spaced apart within the inner cavity of the transparent shell 1. The sound source structure includes a speaker 2 fixedly mounted on the horizontal mounting plate 102. The vibration structure includes a sheet metal 4 and a magnetic assembly 5. The sheet metal 4 is fixedly connected to the horizontal mounting frame 103, and the magnetic assembly 5 is used to fix the sheet metal 4 to the horizontal mounting frame 103. In other embodiments, the sound insulation material 6 can also be fixedly connected to the sheet metal 4 using other structures, such as a slot on the sheet metal 4 and a locking element on the sound insulation material 6 that can engage in the slot. The data acquisition structure 7 includes a decibel meter. A decibel meter is provided on both the horizontal mounting plate 102 and the sound insulation material 6. Preferably, multiple decibel meters are provided on the transparent housing 1, which can comprehensively evaluate the sound energy leakage and avoid single-point measurement errors. By comparing the changes in decibel values ​​of noise before and after sound insulation, the noise reduction effect of the material can be intuitively demonstrated, thereby increasing customer trust.

[0028] The basic working principle of the sound insulation testing and demonstration device involved in this utility model is as follows: By setting up a transparent shell 1, the propagation and vibration of noise in different sound insulation materials 6, i.e., different media, can be intuitively demonstrated to the observer. By setting up horizontal mounting plates 102 and horizontal mounting frames 103 at intervals, the sound source structure and the vibration structure can be fixed, and it is convenient for the sound source structure to play specific noise to the vibration structure next to it. By setting a sound transmission hole 101 on the transparent shell 1, the noise can be transmitted out through the sound transmission hole 101 after being damped and sound-insulated by the vibration structure, intuitively demonstrating the noise after damping and sound insulation. At the same time, by setting up a data acquisition structure 7, the noise data before and after sound insulation is collected, and the sound insulation effect of different sound insulation materials 6 is accurately tested and demonstrated through the data. Specifically, when the sound insulation testing and demonstration device is used, the center frequency is played through the speaker 2. A standardized pink noise signal of 20Hz-20kHz is used to simulate the actual noise propagation process when the noise passes through a sheet metal 4 covered with different sound insulation materials 6. The vibration amplitude and frequency response of the sheet metal 4 itself are observed, allowing the observer to intuitively observe the vibration reduction effect of different sound insulation materials 6. The magnetic suction component 5 allows staff to easily and quickly replace the sound insulation materials 6 on the sheet metal 4. The sound transmission hole 101 allows the observer to directly hear the noise after sound insulation by different sound insulation materials 6. The decibel meter collects the change in decibel value of the noise before and after sound insulation, and the data accurately shows the noise reduction effect of different sound insulation materials 6, so as to intuitively judge the sound insulation and vibration damping performance of different materials. It is suitable for various scenarios such as research and development of sound insulation materials 6, teaching demonstrations, and product demonstrations.

[0029] See Figures 1 to 4 The present invention will be further described below with reference to a specific embodiment:

[0030] In this embodiment, see Figure 1 , Figure 2 , Figure 4 and Figure 4 As a preferred design, the transparent housing 1 includes a cubic frame 104 and a top cover 105 disposed on the cubic frame 104. The horizontal mounting plate 102 and the horizontal mounting frame 103 are both disposed inside the cubic frame 104 and are both square in shape. The joint between the cubic frame 104 and the top cover 105 is provided with silicone sealing strips and rubber gaskets. Preferably, the cubic frame 104 is formed by four square connecting plates and a square base plate. The top cover 105 is disposed opposite to the base plate and is hinged to the connecting plates. The joints between the connecting plates and between the connecting plates and the base plate are provided with silicone sealing strips and rubber gaskets, which can significantly reduce sound leakage and control the sound leakage in the gaps to within 3dB.

[0031] In this embodiment, see Figure 1 As a preferred design, the transparent shell 1 is made of acrylic. Preferably, the top cover 105, the connecting plate of the cube frame 104, and the bottom plate of the cube frame 104 are all made of 1.8mm thick acrylic sheet. Preferably, the horizontal mounting plate 102 and the horizontal mounting frame 103 are both made of acrylic. Acrylic has high transparency, which makes it easy for observers to directly observe the sound insulation and vibration damping effects of different materials inside the transparent shell 1. It also has the advantages of being lightweight, easy to transport and install, strong impact resistance, and not easy to break.

[0032] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the sound source structure also includes a rubber vibration damping bracket 3, which is fixedly connected to the horizontal mounting plate 102. The speaker 2 is fixedly mounted on the rubber vibration damping bracket 3. The rubber vibration damping bracket 3 can effectively absorb and dissipate vibration energy, protecting the speaker 2 from vibration.

[0033] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the speaker 2 is set as a 6.5-inch full-range speaker 2. The speaker 2 can efficiently convert electrical signals into sound waves and transmit them to the vibrating structure. It can cover a wide frequency range. When testing different sound insulation materials 6, it can play standardized pink noise signals with a center frequency of 20Hz-20kHz. It can also connect to a variety of audio sources through wired and wireless means, and has strong compatibility.

[0034] In this embodiment, see Figure 3 As a preferred design, the sheet metal 4 is fixedly connected to the horizontal mounting frame 103 by bolts 8. The thickness of the sheet metal 4 is set to 0.8mm. Preferably, the sheet metal 4 is galvanized sheet metal 4, which has a lower cost and a longer service life. The sheet metal 4 is provided with multiple micro-holes with a diameter of 0.5mm. Preferably, the shape of the sheet metal 4 is set to square. The multiple micro-holes are evenly distributed on the sheet metal 4, and the horizontal and vertical spacing between the multiple micro-holes is set to 8cm. By opening the micro-holes, the contact area between the sheet metal 4 and the sound insulation material 6 can be greatly increased, thereby improving the sound insulation effect of the sound insulation material 6.

[0035] In this embodiment, see Figure 1 As a preferred design, the data acquisition structure 7 also includes a vibration sensor mounted on the sheet metal 4. The vibration sensor can record the vibration amplitude and frequency response of the sheet metal 4 under different sound insulation materials 6 in real time and generate a vibration attenuation curve. In other embodiments, other structures can also be used to measure the vibration amplitude and frequency response of the sheet metal 4, such as a laser vibrometer, an accelerometer, etc.

[0036] In this embodiment, see Figure 1 As a preferred design, the data acquisition structure 7 also includes an oscilloscope, which is electrically connected to the vibration sensor. The oscilloscope can convert the vibration signal of the sheet metal 4 into a waveform or spectrum diagram, which can intuitively show the blocking performance of different sound insulation materials 6 on sound waves of specific frequency bands, and can also observe the instantaneous changes of the vibration signal.

[0037] In this embodiment, see Figure 1 As a preferred design, the data acquisition structure 7 also includes a spectrum analyzer, which is electrically connected to an oscilloscope. The spectrum analyzer can record the attenuation characteristics of different sound insulation materials 6 on sound waves in each frequency band, plot the sound insulation frequency response curve, and analyze frequency changes.

[0038] In this embodiment, see Figure 1 As a preferred design, the data acquisition structure 7 also includes a recording device located outside the transparent shell 1, which plays standardized speech segments inside the transparent shell 1. The recording device can collect residual sound waves outside the transparent shell 1, compare the clarity of speech inside and outside the transparent shell 1, and analyze its recognizability through speech recognition software.

[0039] As can be seen from the above, the sound insulation testing demonstration device of this utility model has the following beneficial effects:

[0040] By setting up a transparent shell 1, the propagation and vibration of noise in different media can be demonstrated intuitively. By setting up a sound source structure, specific noise can be played, ensuring the consistency of the sound source in each test. By setting up a vibration structure, the propagation and vibration of noise in different media can be simulated, and the noise can be damped and soundproofed. By setting up a sound transmission hole 101 and a data acquisition structure 7, the sound insulation and vibration damping effects of different materials can be displayed and compared intuitively and accurately. It is simple to operate, low in cost, and highly repeatable, and is suitable for various scenarios such as the research and development of sound insulation material 6, teaching demonstrations, and product demonstrations. In the research and development of sound insulation material 6, researchers can use the sound insulation testing and demonstration device to quickly screen out sound insulation materials 6 with good sound insulation and vibration damping effects, providing a basis for further research and improvement. In the teaching process, instructors can use the sound insulation testing and demonstration device to intuitively and accurately demonstrate the sound insulation principles and the differences in sound insulation of different materials to students, simulating the actual noise propagation process, thereby improving students' learning interest and understanding. In product demonstrations, merchants can use the sound insulation testing and demonstration device to show customers the effects of their sound insulation products, enhancing customers' confidence in purchasing.

[0041] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0042] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sound insulation test demonstration device for testing and demonstrating the sound insulation and vibration damping effect of different sound insulation materials (6), characterized in that: The device includes a transparent shell (1), a sound source structure, a vibration structure, and a data acquisition structure (7). The transparent shell (1) has a sound transmission hole (101) which is located near the vibration structure. A horizontal mounting plate (102) and a horizontal mounting frame (103) are spaced apart in the inner cavity of the transparent shell (1). The sound source structure includes a loudspeaker (2) fixedly mounted on the horizontal mounting plate (102). The vibration structure includes a sheet metal (4) and a magnetic suction assembly (5). The sheet metal (4) is fixedly connected to the horizontal mounting frame (103). The magnetic suction assembly (5) is used to fix the sheet metal (4) and the sound insulation material (6). The data acquisition structure (7) includes a decibel meter. A decibel meter is provided on the horizontal mounting plate (102) and at the sound insulation material (6).

2. The soundproofing test demonstration apparatus of claim 1, wherein: The transparent shell (1) includes a cube frame (104) and a top cover (105) disposed on the cube frame (104). The horizontal mounting plate (102) and the horizontal mounting frame (103) are both disposed inside the cube frame (104) and are both square in shape. The joint between the cube frame (104) and the top cover (105) is provided with a silicone sealing strip and a rubber gasket.

3. The soundproofing test demonstration apparatus of claim 2, wherein: The transparent shell (1) is made of acrylic.

4. The soundproofing test demonstration apparatus of claim 1, wherein: The sound source structure also includes a rubber shock absorber bracket (3), which is fixedly connected to the horizontal mounting plate (102), and the speaker (2) is fixedly mounted on the rubber shock absorber bracket (3).

5. The soundproofing test demonstration apparatus of claim 1, wherein: The speaker (2) is configured as a 6.5-inch full-range speaker (2).

6. The soundproofing test demonstration apparatus of claim 1, wherein: The sheet metal (4) is fixedly connected to the transverse mounting frame (103) by bolts (8). The thickness of the sheet metal (4) is set to 0.8 mm, and the sheet metal (4) has multiple micro-holes with a diameter of 0.5 mm.

7. The soundproofing test demonstration apparatus of claim 1, wherein: The data acquisition structure (7) also includes a vibration sensor mounted on the sheet metal (4).

8. The soundproofing test demonstration apparatus of claim 7, wherein: The data acquisition structure (7) also includes an oscilloscope, which is electrically connected to the vibration sensor.

9. The soundproofing test demonstration apparatus of claim 7, wherein: The data acquisition structure (7) also includes a spectrum analyzer, which is electrically connected to the oscilloscope.

10. The soundproofing test demonstration apparatus of claim 1, wherein: The data acquisition structure (7) also includes a recording device located outside the transparent housing (1).

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