Acoustic test box
By using probes to hold the workpiece in the acoustic testing chamber and designing two sets of clamping components for microphones, the problem of clamps blocking the sound holes was solved, achieving efficient and accurate acoustic testing and simplifying the operation process.
Patent Information
- Application Number
- CN202520224868.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Traditional acoustic testing chamber fixtures may block the sound outlet or tuning port when holding workpieces, affecting test results. Furthermore, the chamber door needs to be reopened and reopened for each workpiece test, resulting in low efficiency.
The probe is used to hold the workpiece. Two sets of clamping components and a microphone are designed to ensure that the sound hole is not blocked. The moving component enables the testing of two workpieces in one opening and closing of the door. The sound-absorbing structure reduces environmental noise interference.
To ensure the accuracy and efficiency of acoustic test results, avoid clogging of the acoustic holes by clamping tools, improve testing efficiency, and simplify the operation process.
Smart Images
Figure CN223786200U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of acoustic testing technology, specifically to an acoustic testing box. Background Technology
[0002] Traditional acoustic testing chambers are equipped with fixtures to hold workpieces, but these fixtures may block the sound outlet or tuning port of the workpiece when holding it, affecting the test results. In addition, traditional acoustic testing chambers require the chamber door to be opened and closed again to install the workpiece for each test, which is inefficient. Utility Model Content
[0003] This application provides an acoustic testing chamber, comprising: a chamber body, a door, and a testing device; the door closes to the chamber body to form an accommodating space, and the testing device is placed within the accommodating space; the testing device is provided with a first clamping assembly; the first clamping assembly is provided with a first probe and a first workpiece stage; the first probe has a first state and a second state relative to the first workpiece stage; in the first state, the first probe abuts against the surface of a workpiece placed on the first workpiece stage, and the contact area between the first probe and the workpiece is less than 1 mm². 2 In the second state, the first probe is away from the first workpiece stage and has a first distance relative to the first workpiece stage; the testing device is also provided with a first microphone; in the first state, the first microphone is arranged opposite to the first workpiece stage.
[0004] In some embodiments, the testing device includes a second clamping assembly and a second microphone; the second clamping assembly includes a second probe and a second workpiece stage; the second probe has a third state and a fourth state relative to the second workpiece stage; in the third state, the second probe abuts against the surface of a workpiece placed on the second workpiece stage, and the area of the contact surface between the second probe and the workpiece is less than 1 mm. 2 The second microphone is positioned opposite the second workpiece stage; in the fourth state, the second probe is moved away from the second workpiece stage and has a second distance relative to the second workpiece stage.
[0005] In some embodiments, the testing apparatus further includes a movable component configured to be connected to the first clamping component.
[0006] In some embodiments, the first clamping assembly is provided with a first fixing member, the first probe is fixed to the first fixing member, and the first fixing member and the first workpiece stage are connected to the moving assembly.
[0007] In some embodiments, in the first state, the first microphone has a third distance from the first workpiece stage; in the third state, the second microphone has a fourth distance from the second workpiece stage; the third distance and the fourth distance are equal.
[0008] In some embodiments, the testing apparatus is further provided with a third microphone; in the first state, the third microphone is further away from the sound outlet of the workpiece than the first microphone and the second microphone.
[0009] In some embodiments, in the first state, the third microphone has a fifth distance from the first workpiece stage; in the third state, the third microphone has a sixth distance from the second workpiece stage; the difference between the smaller of the fifth distance and the sixth distance and the third distance is greater than 10 cm.
[0010] In some embodiments, a plurality of first probes are provided; the plurality of first probes are arranged in parallel and spaced apart from each other, and the plurality of first probes move toward or away from the first workpiece stage simultaneously.
[0011] In some embodiments, the first probe is configured as a spring probe.
[0012] In some embodiments, the inner surfaces of both the enclosure and the door are provided with sound-absorbing structures.
[0013] The beneficial effects of this application are: the acoustic test box provided by this application uses a probe to clamp the workpiece (e.g., an earphone), avoiding blocking the sound outlet or tuning hole of the workpiece, thus ensuring the accuracy of the acoustic test results. In addition, the clamping components and microphones of the acoustic test box are set in two corresponding sets, so that a pair of workpieces can be tested by opening and closing the door of the acoustic test box at one time, which is highly efficient. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a three-dimensional schematic diagram of the acoustic test box described in this application.
[0016] Figure 2 This is an exploded view of the acoustic test chamber described in this application.
[0017] Figure 3 This is a three-dimensional schematic diagram of the testing device in the acoustic testing box described in this application.
[0018] Figure 4 This is another perspective view of the testing device in the acoustic testing box described in this application.
[0019] Figure 5 This is a three-dimensional schematic diagram of the disassembled structure of the testing device in the acoustic testing box described in this application.
[0020] Figure 6 This is another three-dimensional schematic diagram of the acoustic test box described in this application.
[0021] Figure 7 This is another exploded view of the acoustic test chamber described in this application. Detailed Implementation
[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.
[0023] The reference to "embodiment" in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.
[0024] This application provides an acoustic testing box for performing acoustic testing on workpieces (e.g., headphones). The acoustic testing box can clamp and fix the workpiece with probes and use a microphone to test the acoustic performance of the workpiece.
[0025] See Figure 1-2 In one embodiment, the acoustic test chamber may include a chamber body 1, a door 2, and a test device 3. The door 2 is rotatably connected to the chamber body 1 and can rotate relative to the chamber body 1 to close or open relative to the chamber body 1. When the door 2 is closed relative to the chamber body 1, an accommodating space is formed inside, and the test device 3 is disposed in the accommodating space and fixed to the chamber body 1 to stably place the test device within the accommodating space.
[0026] See Figure 3-5In this embodiment, the testing device 3 may be provided with a first clamping assembly 31a. The first clamping assembly 31a is provided with a first probe 311a and a first workpiece stage 312a. The first probe 311a has a first state and a second state relative to the first workpiece stage 312a. Specifically, in the first state, the first probe 311a abuts against the surface of a workpiece placed on the first workpiece stage 312a. The first probe 311a and the first workpiece stage 312a clamp and limit the workpiece. The contact area between the first probe 311a and the workpiece to be tested is less than 1 mm². 2 This avoids the clamping tool blocking the workpiece's pressure relief hole, tuning hole, and other acoustic channels, making the acoustic test results more accurate and reliable. Furthermore, the combination of the first probe 311a and the first workpiece stage 312a can meet the clamping and limiting requirements of various workpieces. (See reference...) Figure 5 The assembly can hold workpieces including, but not limited to, ear-hook headphones and clip-on headphones, and is easy and convenient to operate. In the second state, the first probe 311a is away from the first workpiece stage 312a and has a first distance relative to the first workpiece stage 312a, so that the workpiece can be placed on the first workpiece stage 312a or removed from the first workpiece stage 312a. In addition, the testing device 3 may be provided with a first microphone 32a. In the first state, the first microphone 32a is arranged opposite to the first workpiece stage 312a, so that the first microphone 32a can receive the sound emitted by the workpiece clamped in the first clamping assembly 31a during the test.
[0027] In some embodiments, the testing device 3 may further include a second clamping assembly 31b and a second microphone 32b. Specifically, the second clamping assembly 31b includes a second probe 311b and a second workpiece stage 312b. The second probe 311b has a third state and a fourth state relative to the second workpiece stage 312b. In the third state, the second probe 311b abuts against the surface of a workpiece placed on the second workpiece stage 312b. The second probe 311b and the second workpiece stage 312b clamp and limit the workpiece, and the contact area between the second probe 311b and the workpiece to be tested is less than 1 mm². 2 In the fourth state, the second probe 311b is moved away from the second workpiece stage 312b and has a second distance relative to the second workpiece stage 312b, allowing the workpiece to be placed on or removed from the second workpiece stage 312b. In the third state, the second microphone 32b is positioned opposite the second workpiece stage 312b, so that the second microphone 32b receives the sound emitted by the workpiece clamped in the second clamping assembly 31b during testing. With this configuration, the acoustic testing chamber can perform acoustic testing on a pair of workpieces with a single opening and closing of the chamber door, making operation simple and efficient.
[0028] See Figure 3-5In this embodiment, the testing device 3 may further include a moving component 33, which may be configured to connect with the first clamping component 31a, allowing the first clamping component 31a to move within the accommodating space formed by the acoustic testing chamber. In some embodiments, the first clamping component 31a may include a first fixing member 313a, with the first probe 311a fixed to the first fixing member 313a, and the first fixing member 313a and the first workpiece stage 312a connected to the moving component 33. For example, see [reference needed]. Figure 5 The first fixing member 313a can be a rod-shaped member. The first probe 311a is fixed to one end of the first fixing member 313a near the first workpiece stage 312a. The moving component 33 can be provided with a corresponding through hole. The first fixing member 313a passes through the through hole and is abutted by a screw screwed in clockwise to achieve the locking and limiting of the first fixing member. When the screw is screwed out counterclockwise, the position of the first fixing member 313a relative to the first workpiece stage 312a can be adjusted, thereby realizing the switching of the first probe 311a relative to the first workpiece stage 312a between the first state and the second state. For example, the first fixing member 313a can be a block-shaped component, and the first probe 311a is fixed to one end of the first fixing member 313a near the first workpiece stage 312a. The moving component 33 can be provided with a corresponding linear guide rail, and the first fixing member 313a is installed on the linear guide rail, thereby adjusting the position of the first fixing member 313a relative to the first workpiece stage 312a, thus realizing the switching of the first probe 311a relative to the first workpiece stage 312a between a first state and a second state. Similarly, the second clamping component 31b can be connected to the moving component 33, and the second clamping component 31b can also be provided with a second fixing member 313b, which will not be described in detail here. In some embodiments, the moving component 33 can also be configured to connect the first clamping component 31a and the second clamping component 31b simultaneously, so as to realize the synchronous movement of the first clamping component 31a and the second clamping component 31b in the accommodating space formed by the acoustic test box.
[0029] In this embodiment, in a first state, the first microphone 32a has a third distance from the first workpiece stage 312a, and the second microphone 32b has a fourth distance from the second workpiece stage 312b. The third and fourth distances are equal, ensuring that the first clamping assembly 31a and the second clamping assembly 31b are in the same testing environment, thus guaranteeing more accurate and reliable results when performing acoustic tests on the same pair of workpieces (e.g., left and right earphones). In some embodiments, the testing device 3 may also be provided with a third microphone 34. In the first state, the third microphone 34 is further away from the sound outlet of the workpiece under test than the first microphone 32a and the second microphone 32b, enabling the third microphone 34 to detect ambient noise within the acoustic test chamber during testing. Further, in the first state, the third microphone 34 has a fifth distance from the first workpiece stage 313a, and a sixth distance from the second workpiece stage 313b. The difference between the smaller of the fifth and sixth distances and the third distance is greater than 10 cm, ensuring that the third microphone 34 is minimally interfered with by the first microphone 32a and the second microphone 32b when detecting ambient noise.
[0030] In some embodiments, the first probe 311a can be configured as a spring probe. Furthermore, in some embodiments, multiple first probes 311a can be provided, and these multiple first probes 311a are arranged parallel to each other and spaced apart. The multiple first probes 311a synchronously move closer to or further away from the first workpiece stage 312a to improve the stability of the first probes 311a and the first workpiece stage 312a in clamping the workpiece. Similarly, the second probe 311b can be configured as a spring probe, and multiple second probes 311b can also be provided, arranged parallel to each other and spaced apart. The multiple second probes 311b synchronously move closer to or further away from the second workpiece stage 312b, as will not be elaborated further.
[0031] In this embodiment, the inner surfaces of the enclosure 1 and the door 2 facing the acoustic test chamber are provided with sound-absorbing structures 4. The sound-absorbing structures 4 can be configured as damping composite sound-absorbing structures, porous sound-absorbing structures, or resonant sound-absorbing structures, and are not limited here. In this way, when the door 2 is closed relative to the enclosure 1, the acoustic test chamber is less affected by external environmental noise, thereby improving the accuracy of the acoustic test results of the workpiece.
[0032] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of this application.
Claims
1. An acoustic testing chamber, comprising a chamber body, a door, and a testing device, characterized in that, The door closes to the box body to form an accommodating space, and the testing device is placed in the accommodating space; The testing device is equipped with a first clamping component; The first clamping assembly is provided with a first probe and a first workpiece stage; The first probe has a first state and a second state relative to the first workpiece stage; In the first state, the first probe abuts against the surface of the workpiece placed on the first workpiece stage, and the area of the contact surface between the first probe and the workpiece is less than 1 mm. 2 ; In the second state, the first probe is away from the first workpiece stage and has a first distance relative to the first workpiece stage; The testing device is also equipped with a first microphone; In the first state, the first microphone is positioned opposite to the first workpiece stage.
2. The acoustic testing box according to claim 1, characterized in that, The testing device is equipped with a second clamping assembly and a second microphone; The second clamping assembly is provided with a second probe and a second workpiece stage; The second probe has a third state and a fourth state relative to the second workpiece stage; In the third state, the second probe abuts against the surface of the workpiece placed on the second workpiece stage, and the area of the contact surface between the second probe and the workpiece is less than 1 mm. 2 The second microphone is positioned opposite to the second workpiece stage; In the fourth state, the second probe is away from the second workpiece stage and has a second distance relative to the second workpiece stage.
3. The acoustic testing box according to claim 1, characterized in that, The testing device is also equipped with a moving component; The moving component is configured to connect to the first clamping component.
4. The acoustic testing box according to claim 3, characterized in that, The first clamping assembly is provided with a first fixing member, the first probe is fixed on the first fixing member, and the first fixing member and the first workpiece stage are connected to the moving assembly.
5. The acoustic testing box according to claim 2, characterized in that, In the first state, the first microphone has a third distance from the first workpiece stage; In the third state, the second microphone and the second workpiece stage have a fourth distance; The third distance and the fourth distance are equal.
6. The acoustic testing chamber according to claim 5, characterized in that, The testing device is also equipped with a third microphone; In the first state, the third microphone is further away from the sound outlet of the workpiece than the first microphone and the second microphone.
7. The acoustic testing box according to claim 6, characterized in that, In the first state, the third microphone has a fifth distance from the first workpiece stage; In the third state, the third microphone has a sixth distance from the second workpiece stage; The difference between the smaller of the fifth and sixth distances and the third distance is greater than 10cm.
8. The acoustic testing chamber according to claim 1, characterized in that, The first probe is provided in multiple forms; The multiple first probes are arranged in parallel intervals, and the multiple first probes move towards or away from the first workpiece stage synchronously.
9. The acoustic testing chamber according to claim 1, characterized in that, The first probe is configured as a spring probe.
10. The acoustic testing chamber according to claim 1, characterized in that, The inner surfaces of both the enclosure and the door are provided with sound-absorbing structures.