Loudspeaker waterproof performance detection device

Abstract

The utility model relates to the field of product waterproof performance detection, in particular to a loudspeaker waterproof performance detection device. The device comprises a detection tool and a locking assembly, the detection tool is provided with an accommodating groove for placing a to-be-detected loudspeaker, a sealing cavity is formed between the bottom of the accommodating groove and the loudspeaker, an inflation channel communicated with the sealing cavity is arranged in the detection tool and is connected with an air tightness detector, and a pressure sensor electrically connected with the detector is arranged in the channel; the locking assembly is used for fixing the loudspeaker to be detected in the containing groove during detection. In addition, the utility model further relates to a bearing table of the groove corner of the containing groove, the specific composition of the locking assembly, the composition structure of the detection jig, a supporting frame and other related devices. The technical effects that the waterproof performance of the loudspeaker can be accurately detected, the detection stability and reliability are improved through cooperation of all the assemblies, and the loudspeakers of different specifications can be conveniently detected are achieved.

Description

Technical Field

[0001] This application relates to the field of horn airtightness testing, and in particular to a horn waterproof performance testing device. Background Technology

[0002] In the field of audio equipment, the speaker speaker, as a crucial sound-producing component, directly impacts the overall sound quality. With continuous technological advancements, consumers have increasingly higher demands for the quality of audio equipment, especially in specific usage scenarios such as outdoors and in bathrooms, where the waterproof performance of speaker speakers is paramount. Good waterproofing ensures stable operation of speaker speakers in various complex environments, extends their lifespan, reduces the probability of malfunctions caused by moisture intrusion, and ultimately enhances the user experience. This makes the testing of speaker waterproofing performance crucial, and related testing technologies are constantly being explored and developed.

[0003] In related technologies, patent application CN106404303A discloses a device for detecting the airtightness of a horn. This device includes a base, an inlet pipe, an outlet pipe, and a leakage indicator tube filled with liquid. The inlet pipe connects to the horn's cavity. The base has a receiving groove for holding the horn, and a through hole is formed at the bottom of the receiving groove. The outlet pipe passes through the through hole and connects the cavity and the leakage indicator tube. The liquid level in the leakage indicator tube is lower than the through hole. The horn airtightness detection device proposed in this invention includes an inlet pipe, an outlet pipe, and a leakage indicator tube. Gas enters the horn's cavity through the inlet pipe, and the airtightness of the horn is detected by observing whether bubbles are generated in the liquid in the leakage indicator tube. The operation is simple, the detection process is intuitive and clear, and the entire detection device is low in cost and highly practical.

[0004] Regarding the aforementioned technologies, judging airtightness by visually observing bubbles is difficult to detect for minute leaks, easily leading to missed or false alarms, and the extent of leakage cannot be quantified. Furthermore, temperature changes can affect liquid volume and gas pressure, resulting in unstable test results (e.g., high-temperature liquid evaporation, low-temperature liquid contraction). Utility Model Content

[0005] To improve the accuracy of testing the airtightness of horns, this application provides a device for testing the waterproof performance of horns.

[0006] The waterproof performance testing device for a loudspeaker provided in this application adopts the following technical solution:

[0007] A device for testing the waterproof performance of a loudspeaker, comprising:

[0008] The testing fixture has a receiving groove for placing a speaker to be tested. A sealed cavity is formed between the bottom of the receiving groove and the speaker to be tested. An inflation channel communicating with the sealed cavity is provided inside the testing fixture. An air tightness tester is connected to the inflation channel. A pressure sensor is provided inside the inflation channel and electrically connected to the air tightness tester.

[0009] A locking assembly is used to fix the speaker to be tested within the receiving groove during testing.

[0010] By adopting the above technical solution, the receiving groove of the testing fixture can place the horn to be tested and form a sealed cavity. The sealed cavity is inflated by the inflation channel. The pressure is detected by the pressure sensor and transmitted to the airtightness tester. By monitoring the pressure change in the cavity, it is possible to indirectly determine whether the horn is leaking. The airtightness and waterproof performance of the horn can be accurately detected. The locking component can fix the horn to be tested in the receiving groove to ensure the stability of the testing process.

[0011] Preferably, a support platform is provided at the corner of the receiving groove, and the support platform is used to support the bottom of the speaker to be tested near the peripheral side.

[0012] By adopting the above technical solution, the support platform is located at the corner of the receiving groove, which can support the bottom of the speaker to be tested near the periphery, ensuring that the sealing cavity has sufficient space, which is conducive to accurately testing the airtightness and waterproof performance of the speaker.

[0013] Preferably, the support platform is an elastic support platform.

[0014] By adopting the above technical solution, the flexible support platform can better fit the speaker, reduce the damage caused by rigid contact to the speaker, ensure the stability and sealing of the speaker, and thus more accurately test the speaker's waterproof performance.

[0015] Preferably, the locking assembly includes a drive member and a locking cover, the locking cover being fixed to the output end of the drive member, and the locking cover being able to abut against the side of the receiving horn away from the receiving groove.

[0016] By adopting the above technical solution, the driving component drives the locking cover to move, so that the locking cover abuts against the side of the horn to be tested away from the receiving groove. In conjunction with the receiving groove of the testing fixture, the horn to be tested is fixed in the receiving groove, ensuring the stability of the horn during the testing process and facilitating the accurate testing of the horn's airtightness and waterproof performance.

[0017] Preferably, the locking cover is a multi-hole locking cover.

[0018] By adopting the above technical solution, the locking cover is a multi-hole locking cover. If the horn is not airtight, gas can flow through the horn and into the locking cover, which allows the gas to circulate better in the testing environment and helps to more accurately test the airtightness and waterproof performance of the horn.

[0019] Preferably, the locking cover is an elastic locking cover.

[0020] By adopting the above technical solution, during testing, the elastic locking cover can better fit the speaker under test, avoiding damage to the speaker due to rigid contact. At the same time, it can more tightly contact the speaker under test, enhancing the fixing effect, thereby ensuring the sealing of the cavity and helping to accurately test the speaker's waterproof performance.

[0021] Preferably, the driving component includes a telescopic cylinder and a sliding plate, the sliding plate is fixed to the telescopic end of the telescopic cylinder, the side of the sliding plate is slidably connected to the side of the telescopic cylinder body, and the locking cover is installed on the bottom side of the sliding plate.

[0022] By adopting the above technical solution, in the horn waterproof performance testing device, a telescopic cylinder is used to drive a sliding plate fixed at its telescopic end, and the side of the sliding plate is slidably connected to the side of the telescopic cylinder body. This enables the stable driving of the locking cover installed on the bottom side of the sliding plate, thereby stably fixing the horn to be tested in the receiving groove, which is beneficial for the subsequent accurate testing of the horn's waterproof performance.

[0023] Preferably, the testing fixture includes a mounting base and a pad, the pad being detachably installed in the mounting base, and the receiving groove being formed in the pad.

[0024] By adopting the above technical solution, the mounting base of the testing fixture and the detachable pad are combined and set up, which makes it easy to replace the appropriate pad according to the different shapes of the speakers to be tested, thereby realizing the appropriate placement of the speakers to be tested, which helps to test the waterproof performance of speakers of different shapes.

[0025] Preferably, the pad is a flexible pad.

[0026] By adopting the above technical solution, the pad is a flexible pad, which on the one hand makes it convenient to replace the pad according to different horn shapes and adapt to different horns to test their waterproof performance. On the other hand, the flexible pad can better fit the horn, which is conducive to improving the sealing performance of the sealing cavity and making it easier to test the airtightness and waterproof performance of the horn more accurately.

[0027] Preferably, the detection device further includes a support frame, the locking assembly is mounted on the support frame, and the position of the locking assembly on the support frame is adjustable.

[0028] By adopting the above technical solution, the locking component is installed on an adjustable support frame, which can flexibly adjust the position of the locking component according to the different sizes and positions of the speakers, and more accurately fix the speakers to be tested, thereby further improving the convenience and accuracy of the waterproof performance testing of the speakers.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Based on the air pressure displayed on the air tightness tester and the feedback from the pressure sensor, it can determine whether the horn is leaking, and thus test the air tightness and waterproof performance of the horn. This avoids the problem of missed detection or misjudgment caused by visual observation of air bubbles, and can effectively identify minute leaks.

[0031] 2. A sealed cavity is formed between the bottom of the receiving tank and the speaker to be tested. With the help of the air filling channel and the air tightness tester, the air tightness of the speaker can be quantitatively tested.

[0032] 3. The testing fixture includes a detachable pad, and the receiving groove on the pad can be replaced according to the shape of the horn, making it easy to adapt to different shapes of horns for testing. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0034] Figure 2 This is a cross-sectional view of the testing fixture in an embodiment of this application.

[0035] Figure 3 This is a side sectional view of the main structure of the embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Testing fixture; 101. Mounting base; 102. Pad; 11. Receiving groove; 111. Support platform; 12. Sealing cavity; 13. Inflation channel; 14. Air tightness tester; 15. Pressure sensor; 20. Locking assembly; 21. Drive component; 211. Telescopic cylinder; 212. Sliding plate; 22. Locking cover; 30. Horn to be tested; 40. Support frame. Detailed Implementation

[0038] The following will be combined with the appendix Figure 1-3 The technical solutions in the embodiments of this utility model are described in further detail below. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0039] This application mainly adopts a testing fixture and an airtightness tester, and uses a locking component to fix the horn, which achieves the effect of accurately testing the waterproof performance of the horn. The following is a further detailed description of this application.

[0040] The speaker waterproof performance testing device provided in this application embodiment refers to... Figure 1 and Figure 2 The device includes a testing fixture 10 and a locking assembly 20. The testing fixture 10 has a receiving groove 11, which allows the speaker 30 to be tested to be placed inside. A sealed cavity 12 is formed between the bottom of the receiving groove 11 and the speaker 30. An inflation channel 13 communicating with the sealed cavity 12 is provided inside the testing fixture 10. An air tightness tester 14 is connected to the inflation channel 13. A pressure sensor 15 is provided inside the inflation channel 13 and is electrically connected to the air tightness tester 14. The locking assembly 20 is used to fix the speaker 30 to be tested in the receiving groove 11 during testing, ensuring the stability of the speaker position during the testing process and avoiding the impact of speaker shaking on the test results. By using the air tightness tester 14 and the pressure sensor 15, the speaker can be indirectly judged for leakage by monitoring the changes in cavity pressure, which can more accurately detect the air tightness of the speaker and thus determine its waterproof performance.

[0041] Specifically, the testing fixture 10 includes a mounting base 101 and a pad 102. The pad 102 is detachably installed in the mounting base 101. A receiving groove 11 is opened in the pad 102. An inflation channel 13 connects the mounting base 101 and the pad 102.

[0042] Optionally, the mounting base 101 is typically made of metal, such as aluminum alloy, which offers good strength and stability. Its shape can be square or round, depending on the specific application and design requirements. The pad 102 is generally made of flexible material, such as rubber or silicone. The advantage of a flexible pad 102 is that it fits the speaker better, reducing damage. It is also removable, facilitating replacement for speakers of different shapes and sizes. For example, for small round speakers and large square speakers, only the corresponding pad 102 needs to be replaced for testing. The pad 102 connects to the mounting base 101 via slots, clips, or other means. For instance, a slot can be provided on the mounting base 101, and the edge of the pad 102 can have protrusions that fit the slot, allowing for removable installation by engaging the protrusions with the slot.

[0043] In a preferred embodiment, a support platform 111 is provided at the corner of the receiving groove 11. The support platform 111 is an elastic support platform. The support platform 111 is generally made of elastic materials such as rubber. Its function is to support the bottom of the speaker 30 to be tested near the peripheral side. The elastic design can buffer the speaker when supporting it, avoiding damage to the speaker from rigid contact. For example, when placing the speaker, the elastic support platform 111 can adapt to the unevenness of the bottom of the speaker, evenly distribute the pressure, and ensure that the sealing cavity 12 and the speaker 30 to be tested have sufficient contact area, so that the gas can fully contact the speaker 30 to be tested, thereby improving the accuracy of testing the speaker 30 to be tested.

[0044] Optionally, the inflation channel 13 is typically a circular pipe. A pressure sensor 15 is installed inside the inflation channel 13, generally a capacitive or piezoresistive pressure sensor. Capacitive pressure sensors offer high accuracy and fast response, enabling timely and accurate measurement of pressure changes within the inflation channel 13. The pressure sensor 15 is electrically connected to the airtightness tester 14 via wires, transmitting the detected pressure signal to the airtightness tester 14 for analysis and processing.

[0045] The air tightness tester 14 is one of the key pieces of equipment in the entire testing device. A direct pressure air tightness tester 14 can be used, which directly measures the pressure change inside the horn being tested.

[0046] Reference Figure 3 Preferably, the locking assembly 20 includes a drive member 21 and a locking cover 22. The locking cover 22 is fixed to the output end of the drive member 21 and can abut against the side of the receiving horn 30 away from the receiving groove 11. In one embodiment, the drive member 21 includes a telescopic cylinder 211 and a sliding plate 212. The sliding plate 212 is fixed to the telescopic end of the telescopic cylinder 211, and the side of the sliding plate 212 is slidably connected to the side of the cylinder body of the telescopic cylinder 211. The locking cover 22 is installed on the bottom side of the sliding plate 212. The telescopic cylinder 211 is generally a single-acting cylinder or a double-acting cylinder. The single-acting cylinder has a simple structure and is suitable for some occasions where the stroke and force requirements are not high; the double-acting cylinder can provide greater thrust and more flexible control. The sliding plate 212 is usually a metal plate with a smooth surface to reduce friction with the side of the cylinder body of the telescopic cylinder 211. It is fixedly connected to the telescopic end of the telescopic cylinder 211 by bolts or other means. When the telescopic cylinder 211 extends or retracts, it drives the sliding plate 212 to move up and down, thereby causing the locking cover 22 to move closer to or further away from the horn 30 to be tested.

[0047] Preferably, the locking cover 22 is a multi-hole locking cover and an elastic locking cover, made of elastic materials such as rubber and sponge. The multi-hole design reduces the weight of the locking cover 22 and allows for better gas flow when it contacts the horn, enabling gas to flow through the horn and towards the locking cover 22, which helps to more accurately test the horn's airtightness and waterproof performance. The elasticity allows for better contact with the horn surface, providing uniform pressure and ensuring a good seal.

[0048] Reference Figure 1 and Figure 3 Optionally, the testing device also includes a support frame 40, on which the locking assembly 20 is mounted. The position of the locking assembly 20 on the support frame 40 is adjustable. The support frame 40 is generally a metal frame structure with high strength and stability. The locking assembly 20 can be mounted on the support frame 40 using bolts, sliders, guide rails, etc., to achieve position adjustment. For example, when testing horns of different heights, the position of the locking assembly 20 can be adjusted so that the locking cover 22 can accurately abut against the horn.

[0049] The implementation principle of this embodiment is as follows: First, according to the shape and size of the speaker 30 to be tested, a suitable pad 102 is selected and installed into the mounting base 101. The speaker 30 to be tested is placed in the receiving groove 11 and supported by the support platform 111. The driving component 21 is activated, and the telescopic cylinder 211 drives the sliding plate 212 and the locking cover 22 to descend, so that the locking cover 22 abuts against the side of the speaker away from the receiving groove 11, fixing the speaker in the receiving groove 11. Then, air is injected into the sealing cavity 12 through the inflation channel 13. The pressure sensor 15 detects the pressure in the inflation channel 13 in real time and transmits the pressure signal to the airtightness tester 14. The airtightness tester 14 judges the airtightness of the speaker based on the pressure change, thereby determining its waterproof performance. This testing device has a simple structure and is easy to operate. It can effectively improve the accuracy and reliability of the test, avoid the problems of missed detection and misjudgment caused by visual observation of bubbles in traditional testing methods, and is not affected by temperature changes, overcoming the shortcomings of the prior art.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the waterproof performance of a loudspeaker, characterized in that, include: The testing fixture (10) has a receiving groove (11) in which a speaker (30) to be tested is placed. A sealed cavity (12) is formed between the bottom of the receiving groove (11) and the speaker (30) to be tested. An inflation channel (13) communicating with the sealed cavity (12) is provided in the testing fixture (10). An air tightness tester (14) is connected to the inflation channel (13). A pressure sensor (15) is provided in the inflation channel (13). The pressure sensor (15) is electrically connected to the air tightness tester (14). Locking assembly (20) is used to fix the speaker (30) to be tested in the receiving groove (11) during testing.

2. The waterproof performance testing device for a loudspeaker according to claim 1, characterized in that: The receiving groove (11) is provided with a support platform (111) at the corner of the groove. The support platform (111) is used to support the bottom of the speaker (30) to be tested near the periphery.

3. The device for testing the waterproof performance of a loudspeaker according to claim 2, characterized in that: The support platform (111) is an elastic support platform.

4. The horn waterproof performance testing device according to claim 1, characterized in that: The locking assembly (20) includes a drive member (21) and a locking cover (22). The locking cover (22) is fixed to the output end of the drive member (21) and can abut against the side of the receiving horn (30) away from the receiving groove (11).

5. The waterproof performance testing device for a loudspeaker according to claim 4, characterized in that: The locking cover (22) is a multi-hole locking cover.

6. A device for testing the waterproof performance of a loudspeaker according to claim 4 or 5, characterized in that: The locking cover (22) is an elastic locking cover.

7. The waterproof performance testing device for a loudspeaker according to claim 4, characterized in that: The drive unit (21) includes a telescopic cylinder (211) and a sliding plate (212). The sliding plate (212) is fixed to the telescopic end of the telescopic cylinder (211). The side of the sliding plate (212) is slidably connected to the side of the cylinder body of the telescopic cylinder (211). The locking cover (22) is installed on the bottom side of the sliding plate (212).

8. The device for testing the waterproof performance of a loudspeaker according to claim 1, characterized in that: The testing fixture (10) includes a mounting base (101) and a pad (102). The pad (102) is detachably installed in the mounting base (101), and the receiving groove (11) is opened in the pad (102).

9. The device for testing the waterproof performance of a loudspeaker according to claim 8, characterized in that: The pad (102) is a flexible pad.

10. The device for testing the waterproof performance of a loudspeaker according to claim 1, characterized in that: The detection device also includes a support frame (40), on which the locking assembly (20) is mounted, and the position of the locking assembly (20) on the support frame (40) is adjustable.

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