Silencing test box

Abstract

The utility model discloses a silencing test box, which comprises a box body, a sound pick-up, a test seat and a lifting driving piece, the inner surface of the box body is covered with a silencing material layer, two oppositely arranged silencing partition plates are also arranged in the box body, the two silencing partition plates and the silencing material layer are respectively encircled to form two mutually independent cavities, and the lifting driving piece is arranged in the two cavities. A containing space is formed between the two silencing partition plates, an opening communicated with the containing space is formed in the top of the box body, and a window communicated with the containing space is formed in the area, close to the opening, of each silencing partition plate. A sound pickup is arranged in each cavity; the testing seat is located in the accommodating space, a positioning groove is formed in the testing seat, testing ports are formed in the two opposite sides of the testing seat respectively, and the two testing ports correspond to the two windows one to one and are communicated with the two windows; the lifting driving piece is arranged in the accommodating space, the lifting driving piece is detachably connected with the test seat, and the lifting driving piece drives the test seat to extend out of the accommodating space or retract into the accommodating space through the opening. The noise reduction test box is novel in structure, high in test accuracy and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic device testing devices, and particularly relates to a soundproof testing 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 testing boxes generally have only one chamber, and a pickup for picking up sound is installed in the chamber. When the above-mentioned speaker module is tested using an existing soundproof testing box, the sounds emitted by the speaker units will interfere with each other, resulting in inaccurate test data. In addition, the test ports on the soundproof testing box are generally fixed, that is to say, it can only be used to test speaker modules with specific sound outlet positions, and the versatility is poor. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a soundproof testing box with strong versatility and high test accuracy.

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

[0006] A box body, the inner surface of the box body is covered with a soundproof material layer, and two relatively arranged soundproof partitions are further provided in the box body. The two soundproof partitions and the soundproof material layer respectively enclose two independent chambers. A receiving space is formed between the two soundproof partitions. An opening communicating with the receiving space is provided at the top of the box body, and a window communicating with the receiving space is provided in the area of the soundproof partition close to the opening;

[0007] Pickups, each chamber is respectively provided with a pickup;

[0008] A test seat, the test seat is located in the receiving space, a positioning groove is provided on the test seat, and test ports are respectively provided on opposite sides of the test seat. The two test ports are in one-to-one correspondence and communication with the two windows, and the test seat is used for placing a test fixture;

[0009] A lifting driving member, the lifting driving member is provided in the receiving space, the lifting driving member is detachably connected to the test seat, and the lifting driving member drives the test seat to extend out of the receiving space or retract into the receiving space through the opening.

[0010] Further, the pickup is disposed close to the window.

[0011] Further, the lifting driving member is connected to the test seat by snap connection, screw connection or pin connection.

[0012] Further, the area of the window is larger than the area of the test port.

[0013] Further, the sound-absorbing partition is made of sound-absorbing cotton.

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

[0015] Further, a support plate is disposed in the accommodation space, the support plate is fixedly connected to the box body, and the lifting driving member is fixedly disposed on the support plate.

[0016] Further, an installation groove for installing the lifting driving member is provided on the support plate.

[0017] Further, the lifting driving member is a cylinder or an electric push rod.

[0018] Further, a lead hole is provided at the bottom of the box body, and the cable connecting the pickup passes through the lead hole and exits the chamber.

[0019] The beneficial effects of the present utility model are as follows: The sound-absorbing test box has a novel structure, and it 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. In addition, the test seat is replaceable. When the tester needs to test multiple speaker modules with different sound outlet positions, the tester only needs to replace the corresponding test seat, effectively improving the versatility of the sound-absorbing test box and facilitating the reduction of the preparation cost and storage cost of the sound-absorbing test box. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the sound-absorbing test box according to Embodiment 1 of the present utility model;

[0021] Figure 2 is a cross-sectional view of the sound-absorbing test box according to Embodiment 1 of the present utility model;

[0022] Figure 3 is a schematic structural diagram of a partial structure of the sound-absorbing test box according to Embodiment 1 of the present utility model.

[0023] Reference Numerals:

[0024] 1. Housing; 11. Sound-absorbing material layer; 12. Sound-absorbing partition; 121. Window; 13. Chamber; 14. Receiving space; 15. Opening; 16. Lead hole;

[0025] 2. Pickup;

[0026] 3. Test socket; 31. Test port;

[0027] 4. Lifting drive member

[0028] 5. Support plate;

[0029] 6. Test fixture. Detailed implementation mode

[0030] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the implementation modes and with reference to the drawings.

[0031] Please refer to Figures 1 to 3 , a sound-absorbing test box, comprising:

[0032] A housing 1, the inner surface of the housing 1 is covered with a sound-absorbing material layer 11, and two relatively arranged sound-absorbing partitions 12 are further provided inside the housing 1. The two sound-absorbing partitions 12 and the sound-absorbing material layer 11 respectively enclose two independent chambers 13. A receiving space 14 is formed between the two sound-absorbing partitions 12. An opening 15 communicating with the receiving space 14 is provided at the top of the housing 1. A window 121 communicating with the receiving space 14 is provided in the area of the sound-absorbing partition 12 close to the opening 15;

[0033] A pickup 2, and the pickup 2 is respectively provided in each of the chambers 13;

[0034] A test socket 3, the test socket 3 is located in the receiving space 14, a positioning groove is provided on the test socket 3, and test ports 31 are respectively provided on opposite sides of the test socket 3. The two test ports 31 correspond to and communicate with the two windows 121 one by one, and the test socket 3 is used for placing a test fixture 6;

[0035] A lifting drive member 4, the lifting drive member 4 is provided in the receiving space 14, the lifting drive member 4 is detachably connected to the test socket 3, and the lifting drive member 4 drives the test socket 3 to extend out of the receiving space 14 or retract into the receiving space 14 through the opening 15.

[0036] As can be seen from the above description, the beneficial effects of the present utility model are as follows: The structure of this soundproof test box is novel. It has two chambers 13 for sound pickup, which can simultaneously test the sound effects of two speaker units in the speaker module, facilitating the improvement of test efficiency. The sounds emitted from the two sound outlets in the speaker module are respectively picked up by the pickups 2 in the two chambers 13, so that the tests of the sound effects of the two speaker units do not interfere with each other, facilitating the improvement of the accuracy of test results. In addition, the test seat 3 is replaceable. When the tester needs to test multiple speaker modules with different sound outlet positions, the tester only needs to replace the corresponding test seat 3, effectively improving the versatility of the soundproof test box and facilitating the reduction of the preparation cost and storage cost of the soundproof test box.

[0037] Further, the pickup 2 is arranged close to the window 121.

[0038] As can be seen from the above description, arranging the pickup 2 close to the window 121 can better pick up sound.

[0039] Further, the lifting drive member 4 is connected to the test seat 3 by snap connection, screw connection or pin connection.

[0040] As can be seen from the above description, there are various specific ways to achieve detachable connection between the lifting drive member 4 and the test seat 3 for selection.

[0041] Further, the area of the window 121 is larger than the area of the test port 31.

[0042] As can be seen from the above description, setting the area of the window 121 larger can enable the window 121 to cooperate with more test seats 3 with different test port 31 positions, facilitating the improvement of the versatility of the soundproof test box to a greater extent.

[0043] Further, the soundproof partition 12 is made of sound-absorbing cotton.

[0044] Further, the soundproof material layer 11 is made of sound-absorbing cotton.

[0045] Further, a support plate 5 is provided in the accommodation space 14. The support plate 5 is fixedly connected to the box body 1, and the lifting drive member 4 is fixedly arranged on the support plate 5.

[0046] As can be seen from the above description, the support plate 5 can not only improve the overall structural strength of the soundproof test box, but also provide an installation position for the lifting drive member 4.

[0047] Further, the support plate 5 is provided with an installation groove for installing the lifting drive member 4.

[0048] As can be seen from the above description, the existence of the installation groove can facilitate the positioning and installation of the lifting drive member 4.

[0049] Further, the lifting driving member 4 is a cylinder or an electric push rod.

[0050] As can be seen from the above description, the specific type of the lifting driving member 4 can be selected as required.

[0051] Further, a lead hole 16 is provided at the bottom of the box body 1, and the cable connecting the pickup 2 passes through the lead hole 16 to penetrate out of the chamber 13.

[0052] Embodiment 1

[0053] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a sound insulation test box for cooperating with a test fixture 6 to test the sound generation performance of a speaker module. The speaker module includes a module housing and two speaker units provided in the module housing. Both ends of the module housing are respectively provided with sound outlets corresponding to the two speaker units; the test fixture 6 includes a base and a pressing plate covering the base. After the base and the pressing plate are connected, a placement cavity for placing the speaker module is formed. Through holes communicating with the two sound outlets are respectively provided at both ends of the test fixture 6.

[0054] The sound insulation test box includes a box body 1, a pickup 2, a test seat 3 and a lifting driving member 4. The inner surface of the box body 1 is covered with a sound insulation material layer 11. Two relatively arranged sound insulation partitions 12 are further provided in the box body 1. The two sound insulation partitions 12 and the sound insulation material layer 11 respectively enclose two independent chambers 13. The pickup 2 is provided in each chamber 13. A receiving space 14 is formed between the two sound insulation partitions 12. An opening 15 communicating with the receiving space 14 is provided at the top of the box body 1. A window 121 communicating with the receiving space 14 is provided in the area of the sound insulation partition 12 close to the opening 15; the test seat 3 is located in the receiving space 14. The test seat 3 is used for placing the test fixture 6. A positioning groove is provided on the test seat 3 for positioning and installing the test fixture 6. Test ports 31 are respectively provided on opposite sides of the test seat 3. The test ports 31 communicate with the through holes on the test fixture 6. The two test ports 31 and the two windows 121 are in one-to-one correspondence and communicate with each other; the lifting driving member 4 is provided in the receiving space 14. The lifting driving member 4 is detachably connected to the test seat 3. The lifting driving member 4 drives the test seat 3 to extend out of the receiving space 14 or retract into the receiving space 14 through the opening 15. The lifting driving member 4 is a cylinder, an electric push rod or other driving mechanisms.

[0055] When the lifting driving member 4 drives the test seat 3 to retract into the accommodation space 14, the test port 31 on the test seat 3 communicates with the window 121. When the lifting driving member drives the test seat 3 to extend out of the box body 1 through the opening 15, testers can perform operations such as removing the test tooling 6 and replacing the test seat 3. Since the test port 31 on the test seat 3 corresponds and communicates with the through hole on the test tooling 6, when testing different speaker modules with test toolings 6 of different specifications and models, it is necessary to replace the corresponding test seat 3.

[0056] Since the positions of the test ports 31 on different test seats 3 are not necessarily the same, to improve the versatility of the soundproof test box to a greater extent, it is preferred that the area of the window 121 is larger than the area of the test port 31.

[0057] In this embodiment, the pickup 2 is arranged close to the window 121. Of course, it is also acceptable that the pickup 2 is arranged deviating from the window 121, and it can be specifically arranged according to the test requirements.

[0058] The lifting driving member 4 is detachably connected to the test seat 3 by snap connection, screw connection, pin connection or other means.

[0059] Optionally, the soundproof partition 12 is made of sound-absorbing cotton, and the soundproof material layer 11 is made of sound-absorbing cotton.

[0060] In a specific product, a support plate 5 is provided in the accommodation space 14. The support plate 5 is fixedly connected to the box body 1, and the lifting driving member 4 is fixedly arranged on the support plate 5. In this embodiment, the support plate 5 is respectively connected to the top wall, bottom wall, front side wall and rear side wall of the box body 1, so that the support plate 5 can better support the box body 1, and further improve the structural stability of the soundproof test box to a greater extent. Optionally, the support plate 5 is provided with an installation groove for installing the lifting driving member 4.

[0061] Of course, it is also possible that the accommodation space 14 does not have the support plate 5, and at this time the lifting driving member 4 is directly installed on the box body 1.

[0062] A lead hole 16 is provided at the bottom of the box body 1, and the cable connecting the pickup 2 passes through the lead hole 16 and exits the chamber 13. In this embodiment, the lifting driving member 4 is a cylinder, and a through hole communicating with the accommodation space 14 is provided at the bottom of the box body 1, and the air pipe connecting the cylinder passes through the through hole.

[0063] In summary, the soundproof test box provided by the present utility model has a novel structure, high test accuracy and strong versatility.

[0064] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A soundproofing test box, characterized in that: include A box body, the inner surface of which is covered with a sound-absorbing material layer, and two sound-absorbing baffles arranged opposite to each other are also arranged in the box body, the two sound-absorbing baffles and the sound-absorbing material layer respectively enclose two independent chambers, a receiving space is formed between the two sound-absorbing baffles, an opening communicating with the receiving space is arranged on the top of the box body, and a window communicating with the receiving space is arranged in an area of ​​the sound-absorbing baffle close to the opening; A pickup, each of the chambers is provided with the pickup; A test seat, the test seat is located in the receiving space, a positioning groove is provided on the test seat, test ports are respectively provided on opposite sides of the test seat, the two test ports correspond to and are connected with the two windows one by one, and the test seat is used to place the test tooling; A lifting drive member is disposed in the receiving space, the lifting drive member is detachably connected to the test seat, and the lifting drive member drives the test seat to extend out of the receiving space or retract into the receiving space through the opening.

2. The anechoic test box according to claim 1, characterized in that: The pickup is arranged close to the window.

3. The anechoic test box according to claim 1, characterized in that: The lifting drive member is connected to the test socket by snap-fit, screw or latch.

4. The anechoic test box according to claim 1, characterized in that: The area of ​​the window is larger than the area of ​​the test port.

5. The anechoic test box according to claim 1, characterized in that: The sound-absorbing baffle is made of sound-absorbing cotton.

6. The anechoic test box according to claim 1, characterized in that: The sound-absorbing material layer is made of sound-absorbing cotton.

7. The anechoic test box according to claim 1, characterized in that: A support plate is arranged in the receiving space, the support plate is fixedly connected to the box body, and the lifting drive member is fixedly arranged on the support plate.

8. The anechoic test box according to claim 7, characterized in that: The support plate is provided with a mounting groove for mounting the lifting drive member.

9. The anechoic test box according to claim 1, characterized in that: The lifting drive member is a cylinder or an electric push rod.

10. The anechoic test box according to claim 1, characterized in that: A lead hole is provided at the bottom of the box body, and the cable connected to the pickup passes through the lead hole and out of the cavity.

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