A sealed box for testing acoustic elements

Abstract

The application relates to a sealed box for testing an acoustic element, and relates to the technical field of acoustic testing equipment, which comprises a sealed box body, and a sealed door is mounted on the outer side of the sealed box body. The sealed box body and the sealed door are matched with first sound-absorbing cotton and second sound-absorbing cotton to form a closed noise reduction space, external noise interference is effectively isolated, a stable and pure environment is provided for main body testing of the acoustic element, then a pneumatic telescopic rod in a self-adaptive clamping assembly is matched with a hinged rod and a moving seat to drive a fixed support and a clamping plate to realize quick clamping and fixing of the acoustic element, installation and dismounting efficiency is greatly improved, the pneumatic telescopic rod can accurately adjust clamping force at the moment, a protective pad made of silica gel is matched, a magnetic adsorption plate and a silica gel damping pad further assist fixing and damping, a detachable connecting structure is convenient to maintain and replace, element damage and displacement vibration are avoided, and it is ensured that testing data is accurate and reliable.

Description

Technical Field

[0001] This application relates to the field of acoustic testing equipment technology, and in particular to a sealed box for testing acoustic components. Background Technology

[0002] In the field of acoustic component performance testing, to obtain accurate and reliable test data, it is necessary to minimize external environmental noise interference. Therefore, using sealed enclosures to isolate acoustic components from the external environment and create a relatively quiet and stable testing environment has become a common testing method in the industry. Currently, most traditional sealed enclosures for acoustic component testing adopt a structure of fixed brackets or guide rails combined with placement racks. Testing is carried out after the acoustic components are placed in the designated positions. The placement and fixing of acoustic components in the sealed enclosure mainly relies on manual operations such as screw tightening and clamp engagement.

[0003] However, the traditional method of fixing acoustic components usually involves tightening screws. This method often takes several minutes during a single installation and disassembly process, resulting in low overall testing efficiency and making it difficult to meet the current demand for rapid testing of batch acoustic components. Secondly, because manual operation makes it difficult to accurately control the clamping force, it is easy to cause the fixing to be too tight or too loose. If it is too tight, it may cause damage to the surface of the acoustic component and deformation of the internal structure. If it is too loose, the acoustic component will be displaced and vibrate during the test, which will interfere with the stable transmission of acoustic signals. Ultimately, this will lead to large errors in the test data, which cannot truly and accurately reflect the performance parameters of the acoustic component, and seriously affect the validity and reliability of the test results. Summary of the Invention

[0004] Technical problems to be solved

[0005] The purpose of this application is to provide a sealed box for testing acoustic components, which enables rapid clamping and fixing of acoustic components, greatly improving installation and disassembly efficiency. At this time, the pneumatic telescopic rod can precisely adjust the clamping force, and with the addition of a silicone protective pad, a magnetic adsorption plate and a silicone vibration damping pad further assist in fixing and vibration reduction, thus solving the problems mentioned in the background art.

[0006] This application provides a sealed box for testing acoustic components, employing the following technical solution: It includes a sealed box body, a sealed door installed on the outer side of the sealed box body, a second sound-absorbing cotton fixedly installed on the inner side of the sealed box body, a first sound-absorbing cotton fixedly installed on the inner side of the sealed door, a slide rail fixedly connected to the inner side of the second sound-absorbing cotton, a movable frame slidably connected inside the slide rail, a placement platform fixedly connected to the outer side of the movable frame, an acoustic component body placed on the upper side of the placement platform, and an adaptive clamping assembly provided inside the placement platform. The adaptive clamping assembly includes a pneumatic telescopic rod fixedly connected to the inner side of the movable frame. The output end is fixedly connected to a fixing block. Two sets of symmetrical fixing rods are fixedly connected to the outside of the fixing block. Each set of fixing rods has two internal rods. Two hinge rods are rotatably connected to the outside of each set of fixing rods. A movable seat is hinged to the outside of each hinge rod. Two fixed brackets are provided on the upper side of the placement platform. The outside of the fixed brackets is fixedly connected to the inside of the movable seat. Clamping plates are fixedly connected to the sides of the two fixed brackets that are close to each other. Protective pads are fixedly connected to the sides of the two clamping plates that are close to each other. An installation platform is fixedly connected to the inside of the sealed box body. A sound detector is fixedly installed on the outside of the installation platform.

[0007] By adopting the above technical solution, a closed testing environment can be formed by setting up the main body of the sealed box and the sealed door. With the first and second sound-absorbing cotton, external noise interference can be effectively isolated, providing a stable testing environment for the acoustic component. Then, the pneumatic telescopic rod in the adaptive clamping assembly drives the fixed block, which in turn drives the hinge rod and the moving seat, so that the fixed bracket and clamping plate can quickly clamp the acoustic component, greatly improving the installation and disassembly efficiency of the acoustic component. At the same time, the pneumatic control can precisely adjust the clamping force in conjunction with the protective pad to avoid damage to the acoustic component due to excessive clamping or displacement and vibration of the component due to excessive clamping, thus ensuring the accuracy and reliability of the test data.

[0008] Preferably, the first sound-absorbing cotton and the second sound-absorbing cotton have a pyramidal structure.

[0009] By adopting the above technical solution, the first and second sound-absorbing cottons of the above pyramidal structure significantly increase the contact area with sound waves, which can absorb sound waves of different frequencies more efficiently and further enhance the noise reduction effect inside the sealed box.

[0010] Preferably, the adaptive clamping assembly further includes two symmetrical guide grooves, and the outer side of the movable seat is slidably connected to the inner side of the guide grooves.

[0011] By adopting the above technical solution, the guide groove provides precise guidance for the sliding of the moving seat, ensuring that the clamping plate moves smoothly when clamping the acoustic component body, avoiding uneven clamping or component damage caused by offset, and improving the stability and reliability of the adaptive clamping assembly.

[0012] Preferably, the protective pad is made of silicone.

[0013] By adopting the above technical solution, the protective pad made of silicone material is soft, so when it comes into contact with the body of the acoustic component, it can not only fit tightly against the surface of the component to enhance the fixing effect, but also play a buffering role to prevent rigid contact from causing scratches or deformation to the surface of the acoustic component, effectively protecting the integrity of the acoustic component.

[0014] Preferably, the outer side of the fixed bracket is inserted into the inner side of the movable seat, and the fixed bracket and the movable seat are fixedly connected by bolts.

[0015] By adopting the above technical solution, the bolt connection method of the fixed bracket and the movable seat can be disassembled, maintained and replaced, reducing equipment maintenance costs.

[0016] Preferably, the outer side of the second sound-absorbing cotton is provided with perforations adapted to the sound detector, and the mounting platform and the main body of the sealing box are fixedly connected by bolts.

[0017] By adopting the above technical solution, the perforations on the second sound-absorbing cotton can ensure that the sound detector can accurately receive the sound signal emitted by the acoustic component body, thus ensuring the accuracy of the test data.

[0018] Preferably, a silicone vibration damping pad is placed on the upper side of the placement platform, and four rectangular array positioning blocks are fixedly connected to the upper side of the placement platform. The outer side of the silicone vibration damping pad is provided with positioning holes that are adapted to the positioning blocks, and the inner side of the silicone vibration damping pad is inserted into the outer side of the positioning blocks.

[0019] By adopting the above technical solution, the silicone vibration damping pad can effectively absorb the vibration generated by the acoustic component body during the test, prevent the vibration transmission from affecting the test results, and at the same time, the cooperation between the positioning block and the positioning hole ensures that the silicone vibration damping pad can be quickly positioned and installed, and avoids displacement, thereby improving the practicality of the silicone vibration damping pad.

[0020] Preferably, a magnetic adsorption plate is fixedly embedded on the upper side of the placement platform, and a storage battery is fixedly installed on the bottom surface of the placement platform. Both the magnetic adsorption plate and the pneumatic telescopic rod are electrically connected to the storage battery.

[0021] By adopting the above technical solution, the magnetic adsorption plate can initially adsorb and fix the main body of the magnetic acoustic component, and with the adaptive clamping component, the stability of the main body of the acoustic component can be further enhanced.

[0022] Beneficial effects

[0023] This sealed chamber for testing acoustic components forms a closed noise-reducing space by combining the main body of the chamber with a sealed door and first and second sound-absorbing cotton. This effectively isolates external noise interference and provides a stable and pure environment for testing the acoustic components. Then, the pneumatic telescopic rod in the adaptive clamping assembly, together with the hinge rod and the moving seat, drives the fixed bracket and clamping plate to quickly clamp and fix the acoustic components, greatly improving the efficiency of installation and disassembly. At this time, the pneumatic telescopic rod can precisely adjust the clamping force. Combined with the protective pad made of silicone material, the magnetic adsorption plate and the silicone vibration damping pad further assist in fixation and vibration reduction. The detachable connection structure facilitates maintenance and replacement, avoids component damage and displacement vibration, and ensures accurate and reliable test data. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0025] Figure 2 This is a cross-sectional structural diagram of the entire application;

[0026] Figure 3 This is a three-dimensional structural diagram of the slide rail, moving frame, adaptive clamping assembly, and acoustic element body of this application;

[0027] Figure 4 This is a three-dimensional structural diagram of the adaptive clamping component of this application;

[0028] Figure 5 This is an exploded structural diagram of the placement platform, silicone vibration damping pad, magnetic adsorption plate, and battery of this application.

[0029] In the picture:

[0030] 1. Sealed box body; 2. Sealed door; 3. First sound-absorbing cotton; 4. Second sound-absorbing cotton; 5. Slide rail; 6. Moving frame; 7. Placement platform; 8. Adaptive clamping assembly; 801. Pneumatic telescopic rod; 802. Fixing block; 803. Fixing rod; 804. Hinge rod; 805. Moving seat; 806. Fixed bracket; 807. Clamping plate; 808. Protective pad; 809. Guide groove; 9. Acoustic component body; 10. Mounting platform; 11. Sound detector; 12. Silicone vibration damping pad; 13. Positioning block; 14. Magnetic adsorption plate; 15. Battery. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0032] Example 1: A sealed box for testing acoustic components, please refer to... Figure 1 , Figure 3 and Figure 5 The enclosure includes a sealed box body 1, a sealed door 2 installed on the outside of the sealed box body 1, a second sound-absorbing cotton 4 fixedly installed on the inside of the sealed box body 1, and a first sound-absorbing cotton 3 fixedly installed on the inside of the sealed door 2. The first and second sound-absorbing cotton 3 and the second sound-absorbing cotton 4 have a pyramidal structure. The pyramidal structure of the first and second sound-absorbing cotton 3 and the second sound-absorbing cotton 4 significantly increases the contact area with sound waves, which can more efficiently absorb sound waves of different frequencies and further enhance the noise reduction effect inside the sealed box. A slide rail 5 is fixedly connected to the inside of the second sound-absorbing cotton 4, and a movable frame 6 is slidably connected inside the slide rail 5. A placement platform 7 is fixedly connected to the outside of the movable frame 6, and a sound-absorbing cotton is placed on the upper side of the placement platform 7. The acoustic component body 9 has an adaptive clamping assembly 8 on its inner side on the placement platform 7. A silicone vibration damping pad 12 is placed on the upper side of the placement platform 7. Four rectangular array positioning blocks 13 are fixedly connected to the upper side of the placement platform 7. The outer side of the silicone vibration damping pad 12 has positioning holes that are adapted to the positioning blocks 13. The inner side of the silicone vibration damping pad 12 is inserted into the outer side of the positioning blocks 13. The silicone vibration damping pad 12 can effectively absorb the vibration generated by the acoustic component body 9 during the test, preventing the vibration transmission from affecting the test results. At the same time, the cooperation between the positioning blocks 13 and the positioning holes ensures that the silicone vibration damping pad 12 is quickly positioned and installed, and avoids displacement, thus improving the practicality of the silicone vibration damping pad 12.

[0033] Please refer to Figure 2 , Figure 3 and Figure 4The adaptive clamping assembly 8 includes a pneumatic telescopic rod 801 fixedly connected to the inner side of the movable frame 6. A fixing block 802 is fixedly connected to the output end of the pneumatic telescopic rod 801. Two sets of symmetrical fixing rods 803 are fixedly connected to the outer side of the fixing block 802. Each set of fixing rods 803 contains two rods. Two hinge rods 804 are rotatably connected to the outer side of each set of fixing rods 803. A movable seat 805 is hinged to the outer side of each hinge rod 804. Two fixed supports 806 are provided on the upper side of the placement platform 7, and the outer side of the fixed supports 806 is fixedly connected to the inner side of the movable seat 805. Clamping plates 807 are fixedly connected to the sides of the brackets 806 that are close to each other. Protective pads 808 are fixedly connected to the sides of the two clamping plates 807 that are close to each other. A mounting platform 10 is fixedly connected to the inner side of the sealing box body 1. A sound detector 11 is fixedly installed on the outer side of the mounting platform 10. A perforation adapted to the sound detector 11 is opened on the outer side of the second sound-absorbing cotton 4. The mounting platform 10 and the sealing box body 1 are fixedly connected by bolts. The perforation on the second sound-absorbing cotton 4 can ensure that the sound detector 11 can accurately receive the sound signal emitted by the acoustic element body 9, and ensure the accuracy of the test data.

[0034] Example 2: A sealed box for testing acoustic components, please refer to... Figure 4 and Figure 5 The adaptive clamping assembly 8 also includes two symmetrical guide grooves 809, and the outer side of the movable seat 805 is slidably connected to the inner side of the guide grooves 809. The guide grooves 809 provide precise guidance for the sliding of the movable seat 805, ensuring that the clamping plate 807 moves smoothly when clamping the acoustic component body 9, avoiding uneven clamping or component damage caused by misalignment, and improving the stability and reliability of the adaptive clamping assembly 8. The protective pad 808 is made of silicone. The silicone protective pad 808 is soft, so when it comes into contact with the acoustic component body 9, it can not only fit tightly against the surface of the component to enhance the fixing effect, but also play a buffering role to prevent rigid contact from scratching or deforming the surface of the acoustic component. The shape effectively protects the integrity of the acoustic components. The outer side of the fixed bracket 806 is inserted into the inner side of the movable base 805. The fixed bracket 806 and the movable base 805 are fixedly connected by bolts. The bolt connection between the fixed bracket 806 and the movable base 805 can be disassembled for maintenance and replacement, reducing equipment maintenance costs. A magnetic adsorption plate 14 is fixedly embedded on the upper side of the placement platform 7, and a storage battery 15 is fixedly installed on the bottom surface of the placement platform 7. The magnetic adsorption plate 14 and the pneumatic telescopic rod 801 are both electrically connected to the storage battery 15. The magnetic adsorption plate 14 can initially adsorb and fix the magnetic acoustic component body 9. With the help of the adaptive clamping component 8, the stability of the acoustic component body 9 can be further enhanced.

[0035] The implementation principle of this application embodiment is as follows: When testing acoustic components, first open the sealing door 2 and place the acoustic component body 9 on the silicone vibration damping pad 12 of the placement platform 7. At this time, the magnetic adsorption plate 14 initially adsorbs and fixes it to prevent the component from moving in subsequent operations. Then, the adaptive clamping assembly 8 is activated. At this time, the pneumatic telescopic rod 801 extends and drives the fixing block 802 to move. The moving seat 805 slides along the guide groove 809 through the hinge rod 804, which drives the fixing bracket 806 and the clamping plate 807 to clamp the acoustic component body 9. Once fixed in place, the protective pad 808 prevents damage to the acoustic component due to excessive clamping. Then, the sealing door 2 is closed, and the enclosed noise reduction space constructed by the sealing box body 1, the sealing door 2, the first sound-absorbing cotton 3, and the second sound-absorbing cotton 4 isolates external noise. At this time, the acoustic component body 9 starts to work and emits sound. The sound signal is received by the sound detector 11 on the mounting platform 10, completing the acoustic performance test. After the test is completed, the pneumatic telescopic rod 801 retracts, the clamping plate 807 is released, and the acoustic component body 9 can be taken out, completing one test process.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealed case for acoustic element testing, comprising a sealed case main body (1), characterized by: A sealing door (2) is installed on the outside of the sealing box body (1). A second sound-absorbing cotton (4) is fixedly installed on the inside of the sealing box body (1). A first sound-absorbing cotton (3) is fixedly installed on the inside of the sealing door (2). A slide rail (5) is fixedly connected to the inside of the second sound-absorbing cotton (4). A movable frame (6) is slidably connected inside the slide rail (5). A placement platform (7) is fixedly connected to the outside of the movable frame (6). An acoustic element body (9) is placed on the upper side of the placement platform (7). An adaptive clamping assembly (8) is provided on the inside of the placement platform (7). The adaptive clamping assembly (8) includes a pneumatic telescopic rod (801) fixedly connected to the inside of the movable frame (6). A fixing block (802) is fixedly connected to the output end of the pneumatic telescopic rod (801). The outer side of the fixing block (802) is fixedly connected to the fixed block (802). The fixed connection has two sets of symmetrical fixed rods (803), each set of fixed rods (803) has two internal rods, and each set of fixed rods (803) has two hinge rods (804) rotatably connected to its outer side. Each hinge rod (804) has a movable seat (805) hinged to its outer side. The upper side of the placement platform (7) is provided with two fixed brackets (806), and the outer side of the fixed brackets (806) is fixedly connected to the inner side of the movable seat (805). The two fixed brackets (806) are fixedly connected to a clamping plate (807) on the side close to each other. The two clamping plates (807) are fixedly connected to a protective pad (808) on the side close to each other. The inner side of the sealed box body (1) is fixedly connected to an installation platform (10), and the outer side of the installation platform (10) is fixedly installed with a sound detector (11).

2. A sealed enclosure for testing acoustic elements according to claim 1, wherein: The first sound-absorbing cotton (3) and the second sound-absorbing cotton (4) have a pyramidal structure.

3. A sealed enclosure for testing acoustic elements as defined in claim 1, wherein: The adaptive clamping assembly (8) also includes two symmetrical guide grooves (809), and the outer side of the movable seat (805) is slidably connected to the inner side of the guide grooves (809).

4. The sealed enclosure for testing acoustic components of claim 1, wherein: The protective pad (808) is made of silicone.

5. The sealed enclosure for testing acoustic components as recited in claim 1, wherein: The outer side of the fixed bracket (806) is inserted into the inner side of the movable seat (805), and the fixed bracket (806) and the movable seat (805) are fixedly connected by bolts.

6. A sealed enclosure for testing acoustic elements according to claim 1, wherein: The second sound-absorbing cotton (4) has perforations on its outer side that are compatible with the sound detector (11), and the mounting platform (10) and the sealing box body (1) are fixedly connected by bolts.

7. A sealed enclosure for testing acoustic elements according to claim 1, wherein: A silicone damping pad (12) is placed on the upper side of the placement platform (7). Four rectangular array positioning blocks (13) are fixedly connected to the upper side of the placement platform (7). The outer side of the silicone damping pad (12) is provided with positioning holes that are compatible with the positioning blocks (13). The inner side of the silicone damping pad (12) is inserted into the outer side of the positioning blocks (13).

8. The sealed enclosure for testing acoustic components of claim 1, wherein: A magnetic adsorption plate (14) is fixedly embedded on the upper side of the placement platform (7), and a storage battery (15) is fixedly installed on the bottom surface of the placement platform (7). The magnetic adsorption plate (14) and the pneumatic telescopic rod (801) are both electrically connected to the storage battery (15).

Images