Silencing test box

Abstract

The utility model discloses a noise reduction test box, which comprises a box body, a baffle plate and a sound pick-up, the top of the box body is provided with an opening, the box body is internally provided with a partition plate, the partition plate divides the internal space of the box body into two independent cavities, and the inner surface of each cavity is provided with a noise reduction material layer; the baffle plate is arranged at the opening to seal the opening, two test ports are formed in the baffle plate, and the two test ports are communicated with the two cavities in a one-to-one correspondence manner; and the sound pick-up devices are respectively arranged in the cavities. The sound attenuation test box is novel in structure, is provided with two cavities used for sound pickup, can test the sound production effects of two loudspeaker monomers in the loudspeaker module at the same time, and facilitates the improvement of the test efficiency; the sound emitted by the two sound outlets in the loudspeaker module is respectively picked up by the sound pick-up devices in the two cavities, so that the sound production effect tests of the two loudspeaker monomers do not interfere with each other, and the accuracy of the test result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic device testing devices, in particular to a soundproof test box. Background Art

[0002] With the rapid development of portable mobile devices such as smart phones, more and more users hope that portable mobile devices have better sound quality. To solve this pain point, a new type of speaker module has emerged on the market. The speaker module includes a module housing and two speaker units provided in the module housing. The same side of the module housing has two sound outlets, and the sound outlets are arranged in one-to-one correspondence with the speaker units.

[0003] Existing soundproof test boxes generally have only one chamber, and a pickup for picking up sound is installed in the chamber. When using the existing soundproof test box to test the above-mentioned speaker module, the sounds emitted by the speaker units will interfere with each other, resulting in inaccurate test data. In other words, the existing soundproof test box is not effectively applicable to the above-mentioned speaker module with two speaker units. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a soundproof test box applicable to a speaker module with two speaker units.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a soundproof test box, comprising:

[0006] A box body, an opening is provided at the top of the box body, a partition is provided inside the box body, and the partition divides the internal space of the box body into two independent chambers. A soundproof material layer is provided on the inner surface of each chamber;

[0007] A baffle, the baffle is provided at the opening to close the opening, and two test ports are provided on the baffle, and the two test ports are in one-to-one correspondence and communication with the two chambers;

[0008] Pickups, and the pickups are respectively provided in each chamber.

[0009] Further, the partition has a vacuum interlayer.

[0010] Further, the pickups are arranged facing the test ports.

[0011] Further, positioning grooves are provided on the baffle, and the test ports are provided on the bottom surface of the positioning grooves.

[0012] Further, a sealing gasket is provided on the bottom surface of the positioning groove, and the sealing gasket surrounds the test port.

[0013] Furthermore, a guiding platform is provided on the baffle, and the guiding platform is arranged close to the positioning groove.

[0014] Furthermore, the sound-absorbing material layer is made of sound-absorbing cotton.

[0015] Furthermore, a quick-action toggle clamp for pressing against the baffle is provided at the top of the box body.

[0016] Furthermore, a bracket is provided in the chamber, the pickup is slidably arranged on the bracket, and a scale is engraved on the bracket.

[0017] Furthermore, a sound-absorbing pad for abutting against the baffle is provided at the top of the partition board.

[0018] The beneficial effects of the present utility model are as follows: The sound insulation test box has a novel structure and has two chambers for sound pickup, which can simultaneously test the sound emission effects of two speaker units in the speaker module, facilitating the improvement of the test efficiency; the sounds emitted from the two sound outlets in the speaker module are respectively picked up by the pickups in the two chambers, so that the sound emission effect tests of the two speaker units do not interfere with each other, facilitating the improvement of the accuracy of the test results. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the sound insulation test box of the first embodiment of the present utility model in cooperation with a test fixture;

[0020] Figure 2 It is a schematic structural diagram of the sound insulation test box of the first embodiment of the present utility model;

[0021] Figure 3 It is a sectional view of the sound insulation test box of the first embodiment of the present utility model.

[0022] Label Description:

[0023] 1. Box body;

[0024] 2. Baffle; 21. Test port; 22. Positioning groove;

[0025] 3. Pickup;

[0026] 4. Partition board; 41. Vacuum isolation layer; 42. Vacuum pumping hole;

[0027] 5. Sound-absorbing material layer;

[0028] 6. Bracket; 61. Scale;

[0029] 7. Guiding platform;

[0030] 8. Sealing gasket;

[0031] 9. Quick-action toggle clamp;

[0032] 10. Sound absorption pad;

[0033] 20. Test fixture; 201. Bottom plate; 202. Pressing plate; 203. Conductive probe. Detailed implementation manners

[0034] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with the implementation manners and with reference to the drawings.

[0035] Please refer to Figures 1 to 3 , a sound insulation test box, comprising:

[0036] A box body 1, an opening is provided at the top of the box body 1, a partition 4 is provided inside the box body 1, the partition 4 divides the internal space of the box body 1 into two independent chambers, and a sound insulation material layer 5 is provided on the inner surface of each chamber;

[0037] A baffle 2, the baffle 2 is provided at the opening to close the opening, two test ports 21 are provided on the baffle 2, and the two test ports 21 are in one-to-one correspondence and communication with the two chambers;

[0038] A pickup 3, the pickup 3 is respectively provided in each chamber.

[0039] It can be seen from the above description that the beneficial effects of the present utility model are as follows: The structure of the present sound insulation test box is novel. It has two chambers for sound pickup, and can simultaneously test the sound emission effects of two speaker units in the speaker module, which is beneficial to improving the test efficiency; the sounds emitted from the two sound outlets in the speaker module are respectively picked up by the pickups 3 in the two chambers, so that the sound emission effect tests of the two speaker units do not interfere with each other, which is beneficial to improving the accuracy of the test results.

[0040] Furthermore, the partition 4 has a vacuum isolation layer 41.

[0041] It can be seen from the above description that the vacuum isolation layer 41 in the partition 4 can further improve the isolation degree between the two chambers to a greater extent, thereby further improving the accuracy of the test results.

[0042] Furthermore, the pickup 3 is arranged opposite to the test port 21.

[0043] It can be seen from the above description that the pickup 3 arranged opposite to the test port 21 can better receive the sound emitted by the speaker module.

[0044] Furthermore, a positioning groove 22 is provided on the baffle 2, and the test port 21 is arranged on the bottom surface of the positioning groove 22.

[0045] As described above, the positioning groove 22 is provided to facilitate the tester to accurately place the test fixture 20 on the baffle 2, so that the sound outlet of the test fixture 20 is accurately docked with the test port 21.

[0046] Furthermore, a sealing gasket 8 is provided on the bottom surface of the positioning groove 22, and the sealing gasket 8 is arranged around the test port 21.

[0047] As described above, the provision of the sealing gasket 8 can improve the sound leakage phenomenon at the contact position between the test fixture 20 and the baffle 2, which is conducive to improving the accuracy of the test results to a greater extent.

[0048] Furthermore, a guiding platform 7 is provided on the baffle 2, and the guiding platform 7 is arranged close to the positioning groove 22.

[0049] As described above, the guiding platform 7 can guide the test fixture 20 to be inserted into the positioning groove 22 on the baffle 2, which is conducive to improving the test efficiency.

[0050] Furthermore, the sound-absorbing material layer 5 is made of sound-absorbing cotton.

[0051] Furthermore, a quick-action elbow clamp 9 for pressing against the baffle 2 is provided on the top of the box body 1.

[0052] Furthermore, a bracket 6 is provided in the chamber, the pickup 3 is slidably arranged on the bracket 6, and a scale 61 is engraved on the bracket 6.

[0053] As described above, the distance between the pickup 3 and the test port 21 can be accurately adjusted.

[0054] Furthermore, a sound-absorbing pad 10 for pressing against the baffle 2 is provided on the top of the partition 4.

[0055] As described above, the presence of the sound-absorbing pad 10 can further improve the isolation degree between the two chambers, thereby improving the accuracy of the test results.

[0056] Embodiment 1

[0057] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is: a soundproof test box, which is used to cooperate with a test fixture 20 to test the sound - emitting effect of a speaker module with two sound - emitting ports. Two speaker units corresponding to the two sound - emitting ports one by one are provided in the speaker module. The test fixture 20 includes a bottom plate 201 and a pressing plate 202. A placement groove for placing the speaker module to be tested is provided on the bottom plate 201. One end of the pressing plate 202 is rotatably connected to the bottom plate 201, and the other end of the pressing plate 202 is detachably connected to the bottom plate 201, such as snap - connection, magnetic - attraction connection, etc. The pressing plate 202 is used to press the speaker module located in the placement groove. Preferably, a conduction probe 203 for conducting the speaker module is provided on the pressing plate 202. Optionally, a communication port communicating with the sound - emitting port is provided on one side of the bottom plate 201.

[0058] The soundproof test box includes a box body 1, a baffle 2 and a pickup 3. An opening is provided at the top of the box body 1. A partition 4 is provided inside the box body 1. The partition 4 divides the internal space of the box body 1 into two independent chambers. The pickup 3 is provided in each chamber. A sound - absorbing material layer 5 is provided on the inner surface of each chamber. Specifically, the sound - absorbing material layer 5 covers both sides of the partition 4. The sound - absorbing material layer 5 can be made of sound - absorbing cotton. The baffle 2 is provided at the opening to close the opening. Two test ports 21 are provided on the baffle 2. The two test ports 21 communicate with the two chambers one by one. After the test fixture 20 is docked with the baffle 2, the communication port of the test fixture 20 communicates with the test port 21, and the sounds emitted by the two speaker units respectively enter the two chambers and are thus picked up by different pickups 3.

[0059] To further improve the accuracy of the test results, it is preferred that the partition 4 has a vacuum isolation layer 41. Specifically, a vacuum - pumping hole 42 communicating with the vacuum isolation layer 41 is provided on the outer surface of the partition 4.

[0060] It is preferred that the pickup 3 is arranged directly opposite the test port 21. Of course, it is also acceptable that the pickup 3 is arranged deviating from the test port 21, which mainly depends on the test requirements. Optionally, a bracket 6 is provided inside the chamber. The pickup 3 is slidably arranged on the bracket 6. A scale 61 is engraved on the bracket 6. When the pickup 3 slides along the bracket 6, the distance between the pickup 3 and the test port 21 changes, so as to meet different test requirements.

[0061] To facilitate the tester to accurately place the test fixture 20 on the baffle 2, a positioning groove 22 is provided on the baffle 2. The positioning groove 22 is used to position the test fixture 20, and the test port 21 is provided on the bottom surface of the positioning groove 22.

[0062] To improve the test efficiency, in this embodiment, a guide platform 7 is provided on the baffle 2, and the guide platform 7 is arranged close to the positioning groove 22. In the process of placing the test fixture 20 on the baffle 2, the tester can first place the test fixture 20 against the wall of the guide platform 7 close to the positioning groove 22, and then drive the test fixture 20 down along the wall of the guide platform 7 and contact the bottom surface of the positioning groove 22.

[0063] As a preferred embodiment, a sealing gasket 8 is provided on the bottom surface of the positioning groove 22 . The sealing gasket 8 is arranged around the test port 21 . The material of the sealing gasket 8 can be silicone, foam, etc.

[0064] A quick toggle clamp 9 is provided on the top of the box body 1 to press against the baffle plate 2. The baffle plate 2 is fixed to the box body 1 by the quick toggle clamp 9. It is not difficult to understand that the partition plate 4 can play a role in supporting the baffle plate 2 to a certain extent.

[0065] In this embodiment, a sound-absorbing pad 10 is provided on the top of the partition 4 to press against the baffle 2. The sound-absorbing pad 10 can be made of materials such as sound-absorbing cotton. The provision of the sound-absorbing pad 10 can improve the accuracy of the test results to a greater extent.

[0066] In summary, the anechoic test box provided by the utility model has a novel structure, which can not only improve the test efficiency, but also improve the accuracy of the test results.

[0067] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A soundproof test chamber, characterized in that, including a box body, an opening is provided at the top of the box body, a partition is provided inside the box body, the partition divides the internal space of the box body into two independent chambers, and a sound-absorbing material layer is provided on the inner surface of each chamber; a baffle, the baffle is provided at the opening to close the opening, two test ports are provided on the baffle, and the two test ports are in one-to-one correspondence and communication with the two chambers; pickup microphones, the pickup microphones are respectively provided in each chamber.

2. The soundproof test box according to claim 1, characterized in that, The partition has a vacuum interlayer.

3. The soundproof test chamber according to claim 1, characterized in that The pickup microphone is arranged opposite to the test port.

4. The soundproof test chamber according to claim 1, characterized in that, A positioning groove is provided on the baffle, and the test port is provided on the bottom surface of the positioning groove.

5. The soundproof test box according to claim 4, wherein, A sealing gasket is provided on the bottom surface of the positioning groove, and the sealing gasket surrounds the test port.

6. The soundproof test chamber according to claim 4, characterized in that, A guiding platform is provided on the baffle, and the guiding platform is arranged close to the positioning groove.

7. The soundproof test chamber according to claim 1, wherein The sound-absorbing material layer is made of sound-absorbing cotton.

8. The soundproof test chamber according to claim 1, wherein A quick-action toggle clamp for pressing the baffle is provided at the top of the box body.

9. The soundproof test box according to claim 1, characterized in that, A bracket is provided in the chamber, the pickup microphone is slidably arranged on the bracket, and a scale is engraved on the bracket.

10. The sound insulation test box according to claim 1, characterized in that, A sound-absorbing pad for abutting against the baffle is provided at the top of the partition.

Images