Device and method for testing sound insertion loss of electronic waterproof film

Abstract

The invention belongs to the technical field of waterproof membrane testing, and particularly discloses an electronic waterproof membrane sound insertion loss testing device and a testing method.The electronic waterproof membrane sound insertion loss testing device comprises a testing tool and a sound receiver, and the testing tool comprises a first clamping plate, a second clamping plate and a clamping mechanism; the second clamping plate is provided with a supporting area; two sides of the supporting area are respectively provided with a first fitting area and a second fitting area, and the supporting area is provided with a second sound passing hole; the first clamping plate is provided with a first sound passing hole corresponding to the second sound passing hole; the sound receiver is arranged on the side, away from the second sound passing hole, of the first clamping plate. The first clamping plate and the second clamping plate press the waterproof membrane in the supporting area, the state of the waterproof membrane under the actual working condition can be simulated, the sound insertion loss of the waterproof membrane can be obtained through testing, more accurate data can be provided for selecting the waterproof membrane for electronic equipment, the sound insertion loss of the waterproof membrane in the non-press-fit state can be tested, and the test accuracy is improved. And the purpose of one machine with two purposes is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof membrane testing, and in particular to a device and method for testing sound insertion loss of an electronic waterproof membrane. Background Art

[0002] To ensure good sound transmission, the device needs to have pores. However, as sound passes through these pores, liquid will also enter, which may eventually cause problems with device performance and reliability. Existing electronic devices use a waterproof membrane on each acoustic port of the microphone to ensure the waterproof performance of the device, but the waterproof membrane will affect the acoustic performance of the device. Among them, different waterproof membranes have different sound insertion losses. When selecting a waterproof membrane for electronic equipment, the waterproof membrane with the smallest sound insertion loss should be selected. At present, the acoustic performance test method of the waterproof membrane can test the sound insertion loss of the waterproof membrane in a non-pressure state, but when the waterproof membrane is applied to actual equipment, the waterproof membrane is in a pressed state, resulting in the insertion loss data of the waterproof membrane in a non-pressed state cannot reflect the sound insertion loss of the waterproof membrane in actual application, affecting the final acoustic performance of the electronic device. Summary of the Invention

[0003] The purpose of the present invention is to provide an electronic waterproof membrane sound insertion loss test device and test method to solve the technical problem in the prior art that the sound insertion loss of the waterproof membrane in a pressed state cannot be accurately tested.

[0004] In order to achieve the above object, the present invention provides an electronic waterproof membrane sound insertion loss test device, which comprises:

[0005] The test fixture comprises a first clamping plate, a second clamping plate and a clamping mechanism; the first clamping plate is arranged on one side of the second clamping plate; the second clamping plate is provided with a supporting area for supporting a waterproof membrane; the supporting area is provided with a second sound hole passing through the second clamping plate; the side of the supporting area facing the first clamping plate is a first fitting area; the side of the supporting area facing away from the first clamping plate is a second fitting area; the first clamping plate is provided with a first sound hole passing through the first clamping plate at a position corresponding to the second sound hole; the clamping mechanism is used to adjust the distance between the second clamping plate and the first clamping plate; when the waterproof membrane is affixed to the first fitting area, the clamping mechanism drives the first clamping plate and the second clamping plate to press the waterproof membrane against the supporting area;

[0006] A sound receiver is arranged on a side of the first clamping plate away from the second sound hole, and the sound receiver covers the first sound hole.

[0007] Preferably, it further comprises: a supporting gasket; the supporting gasket is arranged between the first clamping plate and the second clamping plate, and the supporting gasket is used to fill the gap between the first clamping plate and the second clamping plate.

[0008] Preferably, the support gasket is provided with a third sound hole for avoiding the support area, and the third sound hole passes through the support gasket.

[0009] Preferably, the aperture of the first sound hole is smaller than the aperture of the second sound hole.

[0010] Preferably, the clamping mechanism includes a plurality of clamping members; the clamping member has a tightening head and a connecting column; the tightening head is arranged at one end of the connecting column, and the connecting column is provided with an external thread; the first clamping plate is provided with a threaded hole matching the external thread; the second clamping plate is provided with a through hole; the connecting column passes through the through hole and is threadedly connected to the threaded hole, and the tightening head abuts against the second clamping plate.

[0011] Preferably, it further comprises: a fixing seat; the fixing seat is connected to the first clamping plate, and the fixing seat is located on the side of the first clamping plate away from the second clamping plate, and the fixing seat is connected to the sound receiver.

[0012] Preferably, it further comprises: a sound generator; the sound generator is arranged on a side of the second clamping plate away from the first sound hole.

[0013] Preferably, it further comprises: a test cabin; the inner side wall of the test cabin has a sound absorbing layer; the sound generator, the test tooling, and the sound receiver are all located in the test cabin.

[0014] Preferably, it further comprises: a signal generating system; the signal generating system is connected to the sounder signal.

[0015] Preferably, it further comprises: a data acquisition system; the data acquisition system is connected to the sound receiver signal.

[0016] Preferably, it further comprises: a processor; the processor is signal-connected to the signal generating system and the data acquisition system.

[0017] A second aspect of the present invention provides a method for testing the above-mentioned electronic waterproof membrane sound insertion loss test device, which comprises:

[0018] A test audio frequency is emitted from a side of the second acoustic hole facing away from the first acoustic hole, and the audio frequency is received by a sound receiver to obtain a no-load audio frequency curve when the waterproof film is not mounted;

[0019] Place the waterproof film to be tested in the support area, attach the waterproof film to the first attachment area so that the waterproof film covers the second sound transmission hole, and use the clamping mechanism to adjust the distance between the first clamping plate and the second clamping plate, so that the second clamping plate cooperates with the first clamping plate to press the waterproof film on the support area;

[0020] Emit a test audio on the side of the second sound transmission hole facing away from the first sound transmission hole, and use a sound receiver to receive the audio to obtain an audio curve after passing through the waterproof film in the pressed state;

[0021] Subtract the no-load audio curve when the waterproof film is not mounted from the audio curve after passing through the waterproof film in the pressed state, and the sound insertion loss of the waterproof film in the pressed state can be obtained.

[0022] Preferably, when it is necessary to place the waterproof film to be tested in the support area, a support gasket is placed in the gap between the first clamping plate and the second clamping plate.

[0023] The third aspect of the present invention provides a test method for an electronic waterproof film sound insertion loss test device as described above, which includes:

[0024] Emit a test audio on the side of the second sound transmission hole facing away from the first sound transmission hole, and use a sound receiver to receive the audio to obtain a no-load audio curve when the waterproof film is not mounted;

[0025] Place the waterproof film to be tested in the support area, attach the waterproof film to the second attachment area so that the waterproof film covers the second sound transmission hole;

[0026] Emit a test audio on the side of the second sound transmission hole facing away from the first sound transmission hole, and use a sound receiver to receive the audio to obtain an audio curve after passing through the waterproof film in the non-pressed state;

[0027] Subtract the no-load audio curve when the waterproof film is not mounted from the audio curve after passing through the waterproof film in the non-pressed state, and the sound insertion loss of the waterproof film can be obtained.

[0028] Preferably, when it is necessary to place the waterproof film to be tested in the support area, a sound leakage-proof gasket is placed in the gap between the first clamping plate and the second clamping plate, and the clamping mechanism is used to adjust the distance between the first clamping plate and the second clamping plate so that the first clamping plate and the second clamping plate clamp the sound leakage-proof gasket.

[0029] The electronic waterproof film sound insertion loss test device and test method provided by the present invention have the following beneficial effects: The first clamping plate and the second clamping plate press the waterproof film within the supporting area, and the first sound passing hole is provided on the first clamping plate. By using the sound receiver to receive the audio curve of the waterproof film in the pressed state, subtracting the no-load audio curve can obtain the sound insertion loss of the waterproof film after being applied to the actual device. Therefore, this embodiment can simulate the state of the waterproof film under actual working conditions and test the sound insertion loss of the waterproof film after being applied to the actual device, so as to improve the accuracy of the test data, provide more accurate data for the selection of the waterproof film for electronic devices, and minimize the impact on the final acoustic performance of the electronic device as much as possible. Moreover, this embodiment can also test the sound insertion loss of the waterproof film in the non-pressed state, achieving the purpose that one test device can test the sound insertion loss of the waterproof film in two states, that is, serving two purposes with one machine.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram when the first fitting area of the test tooling of the electronic waterproof film sound insertion loss test device in the embodiment of the present invention fits the waterproof film;

[0032] Figure 2 It is a schematic structural diagram of the electronic waterproof film sound insertion loss test device in the embodiment of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the support gasket in the embodiment of the present invention;

[0034] Figure 4 It is a schematic structural diagram when the second fitting area of the test tooling of the electronic waterproof film sound insertion loss test device in the embodiment of the present invention fits the waterproof film;

[0035] Figure 5 It is a flowchart of the test method for testing the sound insertion loss of the electronic waterproof film in the pressed state in the embodiment of the present invention;

[0036] Figure 6 It is a flowchart of the test method for testing the sound insertion loss of the electronic waterproof film in the non-pressed state in the embodiment of the present invention.

[0037] In the figure, 10 is a waterproof film; 100 is a test tooling; 110 is a first clamping plate; 111 is a first sound passing hole; 120 is a second clamping plate; 121 is a supporting area; 122 is a second sound passing hole; 130 is a clamping mechanism; 131 is a clamping member; 132 is a pressing head; 133 is a connecting column; 200 is a sound receiver; 300 is a supporting gasket; 310 is a third sound passing hole; 400 is a fixing base; 500 is a sound generator; 600 is a test chamber; 610 is a sound absorption layer; 700 is a signal generating system; 800 is a data acquisition system; 900 is a processor. Detailed implementation manners

[0038] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0040] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0042] Please refer to Figures 1 to 6 together, and now a description will be given of an electronic waterproof film sound insertion loss test device provided by an embodiment of the present invention.

[0043] As Figures 1 to 4 shown, the electronic waterproof film sound insertion loss test device according to the embodiment of the present invention includes: a test tooling 100 and a sound receiver 200;

[0044] Among them, the test tooling 100 includes a first clamping plate 110, a second clamping plate 120, and a clamping mechanism 130; the first clamping plate 110 is disposed on one side of the second clamping plate 120, and the second clamping plate 120 is provided with a supporting area 121 for supporting the waterproof film 10; the supporting area 121 is provided with a second sound passing hole 122 penetrating through the second clamping plate 120; the side of the supporting area 121 facing the first clamping plate 110 is a first fitting area; the side of the supporting area 121 facing away from the first clamping plate 110 is a second fitting area; both the first fitting area and the second fitting area are used for attaching the waterproof film 10. The first clamping plate 110 is provided with a first sound passing hole 111 penetrating through the first clamping plate 110 at a position corresponding to the second sound passing hole 122; the clamping mechanism 130 is used to adjust the distance between the second clamping plate 120 and the first clamping plate 110; when the first fitting area is attached with the waterproof film, the clamping mechanism 130 drives the first clamping plate 110 and the second clamping plate 120 to press the waterproof film 10 against the supporting area 121; the sound receiver 200 is disposed on the side of the first clamping plate 110 facing away from the second sound passing hole 122, and the sound receiver 200 covers the first sound passing hole 111, so as to ensure that the sound receiver 200 can better receive the audio passing through the first sound passing hole 111.

[0045] Referring to Figure 1 , when the first fitting area is attached with the waterproof film 10 and the second clamping plate 120 cooperates with the first clamping plate 110 to press the waterproof film 10 against the supporting area 121, the waterproof film 10 can cover the first sound passing hole 111 and the second sound passing hole 122, so that the adhesive on the back of the waterproof film 10 can be attached to the first fitting area of the supporting area 121, making the waterproof film 10 conform to the actual use working condition. The clamping mechanism 130 can adjust the distance between the first clamping plate 110 and the second clamping plate 120, so as to accurately control the pressing degree of the waterproof film 10 to adapt to the test of the electronic waterproof film 10 at different working heights.

[0046] During use, a test audio can be first emitted on the side of the second sound passing hole 122 away from the first sound passing hole 111, so that the sound receiver 200 can collect the no-load audio curve when the waterproof film 10 is not mounted. Then, the waterproof film 10 is attached to the first attachment area, such that the waterproof film 10 covers the second sound passing hole 122, and the first clamping plate 110 and the second clamping plate 120 are used to press the waterproof film 10 in the support area 121 to simulate the working condition of the waterproof film 10 in actual application. Subsequently, a test audio is emitted on the side of the second sound passing hole 122 away from the first sound passing hole 111. Then, the sound wave of the test audio passes through the second sound passing hole 122, the waterproof film 10, and the first sound passing hole 111, and the corresponding sound receiver 200 collects the audio curve at this time. Thus, the audio curve after passing through the waterproof film 10 in the pressed state can be obtained. At this time, subtracting the no-load audio curve from the collected audio curve after passing through the waterproof film 10 in the pressed state can obtain the sound insertion loss of the waterproof film 10, so as to obtain the sound insertion loss of the waterproof film 10 after being applied to the actual device.

[0047] In this embodiment, the first clamping plate 110 and the second clamping plate 120 are used to press the waterproof film 10 in the first attachment area of the support area 121, so that the waterproof film 10 covers the second sound passing hole 122, and the first sound passing hole 111 is provided in the first clamping plate 110. The sound receiver 200 is used to receive the audio curve after passing through the waterproof film 10 in the pressed state. Then, subtracting the no-load audio curve can obtain the sound insertion loss of the waterproof film 10 after being applied to the actual device. Therefore, this embodiment can simulate the state of the waterproof film 10 under the actual working condition and test and obtain the sound insertion loss of the waterproof film 10 after being applied to the actual device, so as to improve the accuracy of the test data, provide more accurate data for the selection of the waterproof film 10 for the electronic device, and minimize the influence on the final acoustic performance of the electronic device.

[0048] It should be noted that when it is necessary to replace the waterproof film 10 for testing, the clamping mechanism 130 can be used to increase the distance between the first clamping plate 110 and the second clamping plate 120 to facilitate the replacement of the waterproof film 10 attached to the first attachment area of the support area 121, or the second clamping plate 120 can be first removed from the test tooling 100, and the waterproof film 10 is attached to the first attachment area.

[0049] It can be understood that this embodiment can also test the sound insertion loss of the electronic waterproof film 10 in the non-pressed state. The specific process is as follows:

[0050] Refer to Figure 4, first, emit a test audio on the side of the second sound passing hole 122 away from the first sound passing hole 111, so that the sound receiver 200 can collect the no-load audio curve when the waterproof film 10 is not mounted; then mount the waterproof film 10 on the second bonding area on the side of the supporting area 121 away from the first sound passing hole 111, and let the waterproof film 10 cover the second sound passing hole 122; subsequently, emit a test audio on the side of the second sound passing hole 122 away from the first sound passing hole 111, then the sound wave of the test audio passes through the waterproof film 10, the second sound passing hole 122, and the first sound passing hole 111, and the corresponding sound receiver 200 collects the audio curve at this time, and then the audio curve after the waterproof film 10 is pasted can be obtained. At this time, subtracting the no-load audio curve from the collected audio curve after the waterproof film 10 is pasted can obtain the sound insertion loss of the waterproof film 10, so as to obtain the sound insertion loss of the waterproof film 10. Among them, in order to avoid side sound leakage, an ultra-thin closed-cell foam gasket can be placed between the first clamping plate 110 and the second clamping plate 120, and the clamping mechanism 130 is used to drive the first clamping plate 110 and the second clamping plate 120 to clamp the ultra-thin closed-cell foam gasket to prevent side sound leakage and improve the accuracy of the test audio curve.

[0051] In some embodiments of the present invention, refer to Figures 1 to 3 , in order to facilitate adjusting the distance between the first clamping plate 110 and the second clamping plate 120 to precisely control the pressing degree, the electronic waterproof film sound insertion loss test device further includes: a support gasket 300; the support gasket 300 is arranged between the first clamping plate 110 and the second clamping plate 120, and the support gasket 300 is used to fill the gap between the first clamping plate 110 and the second clamping plate 120. The thickness of the support gasket 300 can be adjusted according to different pressing requirements. Since the support gasket 300 is located between the first clamping plate 110 and the second clamping plate 120, the thickness of the support gasket 300 is used to control the gap between the first clamping plate 110 and the second clamping plate 120. When the first clamping plate 110 and the second clamping plate 120 clamp the support gasket 300 under the drive of the clamping mechanism 130, the gap between the first clamping plate 110 and the second clamping plate 120 is equal to the thickness of the support gasket 300, so as to precisely control the pressing degree of the waterproof film 10 to adapt to the test of the electronic waterproof film 10 with different working heights.

[0052] In some embodiments of the present invention, refer to Figures 1 to 3 , in order to prevent the support gasket 300 from affecting the audio, the support gasket 300 is provided with a third sound passing hole 310 for avoiding the supporting area 121. The third sound passing hole 310 penetrates through the support gasket 300. By providing the third sound passing hole 310, the support gasket 300 will not extend into the supporting area 121 or the second sound passing hole 122 or the first sound passing hole 111, avoiding interference of the support gasket 300 on the sound wave during the test.

[0053] It should be noted that the sound receiver 200 can be a MEMS sensor (micro-electromechanical system sensor) that can receive audio, a microphone, and the like.

[0054] In some embodiments of the present invention, referring to Figures 1 to 3 , the aperture of the first sound passing hole 111 is smaller than the aperture of the second sound passing hole 122. During installation, the waterproof film 10 covers the second sound passing hole 122. Therefore, when the clamping mechanism 130 drives the first clamping plate 110 and the second clamping plate 120 to press the waterproof film 10, it can be ensured that the waterproof film 10 can also cover the first sound passing hole 111 to simulate the actual use condition of the waterproof film 10. Moreover, the larger aperture of the second sound passing hole 122 can better allow the test audio to pass through, so that the audio can enter the first sound passing hole 111 and the sound receiver 200 through the waterproof film 10, ensuring the accuracy of the test.

[0055] In some embodiments of the present invention, referring to Figures 1 to 3 , the clamping mechanism 130 includes a plurality of clamping members 131; the clamping member 131 has a pressing head 132 and a connecting column 133; the pressing head 132 is arranged at one end of the connecting column 133, and the connecting column 133 is provided with an external thread; the first clamping plate 110 is provided with a threaded hole that mates with the external thread; the second clamping plate 120 is provided with a through hole; the connecting column 133 passes through the through hole and is threadedly connected to the threaded hole, and the pressing head 132 abuts against the second clamping plate 120. The clamping member 131 is a bolt, and the pressing head 132 is the bolt head. When the bolt is tightened, the bolt head is used to press the second clamping plate 120 towards the first clamping plate 110, thereby reducing the distance between the first clamping plate 110 and the second clamping plate 120; when the bolt is loosened, the second clamping plate 120 can be detached along the connecting column 133 to expand the distance between the second clamping plate 120 and the first clamping plate 110. Secondly, when the clamping member 131 is loosened until the clamping member 131 is detached from the first clamping plate 110, the second clamping plate 120 can be removed from the test tooling 100 to separately attach or replace the waterproof film 10 on the second clamping plate 120, which is convenient for operation.

[0056] In addition, the clamping mechanism 130 can also adopt a lead screw device, an elastic clip, or other mechanisms that can adjust the distance between the first clamping plate 110 and the second clamping plate 120.

[0057] In some embodiments of the present invention, referring to Figures 1 to 3The electronic waterproof membrane sound insertion loss test device also includes a fixing base 400 connected to the first clamping plate 110 and located on the side of the first clamping plate 110 facing away from the second clamping plate 120. The fixing base 400 is connected to the sound receiver 200. The fixing base 400 secures the sound receiver 200 to the first clamping plate 110, thereby better securing the sound receiver 200 on the side of the first sound hole 111 facing away from the second sound hole 122, ensuring that the sound receiver 200 receives audio better. Alternatively, the sound receiver 200 can be directly secured to the side of the first sound hole 111 facing away from the second sound hole 122 using other fixing devices (such as a manipulator, a fixing clamp, etc.).

[0058] In some embodiments of the present invention, reference Figures 1 to 3 To facilitate emitting a test audio frequency on the side of the second clamping plate 120 facing away from the first acoustic hole 111, the electronic waterproof membrane sound insertion loss test device further includes a sound generator 500 disposed on the side of the second clamping plate 120 facing away from the first acoustic hole 111. The sound generator 500 can be a device capable of emitting audio frequency, such as an artificial mouth or a speaker, and is configured to emit the test audio frequency so that the test audio frequency is emitted on the side of the second clamping plate 120 facing away from the first acoustic hole 111.

[0059] In some embodiments of the present invention, reference Figures 1 to 3 To reduce the impact of other sounds during testing, the electronic waterproof membrane sound insertion loss test device also includes a test chamber 600; the inner wall of the test chamber 600 is provided with a sound-absorbing layer 610; the sound generator 500, the test fixture 100, and the sound receiver 200 are all located within the test chamber 600. The sound-absorbing layer 610 on the inner wall of the test chamber 600 prevents external sounds from entering the test chamber 600, reducing the impact of external sounds on the test audio and preventing the sound receiver 200 from receiving other sounds, thereby ensuring the accuracy of the test results.

[0060] In some embodiments of the present invention, reference Figures 1 to 3 The electronic waterproof membrane sound insertion loss test device further includes a signal generating system 700, which is signal-connected to the sound generator 500. The signal generating system 700 is used to send a test audio signal to the sound generator 500 so that the sound generator 500 emits the test audio.

[0061] In some embodiments of the present invention, reference Figures 1 to 3, the electronic waterproof film sound insertion loss test device further includes: a data acquisition system 800; the data acquisition system 800 is signal-connected to the sound receiver 200. The data acquisition system 800 is matched with the sound receiver 200 so that the sound collected by the sound receiver 200 is converted into an electrical signal and an audio curve is generated.

[0062] In some embodiments of the present invention, referring to Figures 1 to 3 , the electronic waterproof film sound insertion loss test device further includes: a processor 900; the processor 900 is signal-connected to the signal generation system 700 and the data acquisition system 800. The processor 900 can be a control terminal such as a computer. The processor 900 is used to control the signal generation system 700 to emit a test audio and receive the electrical signal of the data acquisition system 800, so as to process the audio curve, so that the tester can receive the audio curve at the control terminal for easy testing.

[0063] It should be noted that the signal generation system 700 is an audio signal generation device, and the data acquisition system 800 is an audio data processing device that cooperates with the sound receiver 200. Both are common devices on the market and will not be elaborated here. The signal connection can be a common signal connection such as an electrical signal connection, a WiFi signal connection, or a Bluetooth connection.

[0064] Referring to Figure 1 and Figure 5 , the present invention also provides a test method for the electronic waterproof film sound insertion loss test device as described above, which includes:

[0065] Emit a test audio on the side of the second sound passing hole 122 facing away from the first sound passing hole 111, and use a sound receiver to receive the audio to obtain an empty-load audio curve when the waterproof film 10 is not mounted;

[0066] Place the waterproof film 10 to be tested in the supporting area 121, attach the waterproof film 10 to the first attachment area so that the waterproof film 10 covers the second sound passing hole 122, and use the clamping mechanism 130 to adjust the distance between the first clamping plate 110 and the second clamping plate 120 so that the second clamping plate 120 cooperates with the first clamping plate 110 to press the waterproof film 10 against the supporting area 121;

[0067] Emit a test audio on the side of the second sound passing hole 122 facing away from the first sound passing hole 111, and use a sound receiver to receive the audio to obtain an audio curve after passing through the waterproof film 10 in the pressed state;

[0068] Subtract the empty-load audio curve when the waterproof film 10 is not mounted from the audio curve after passing through the waterproof film 10 in the pressed state, and the sound insertion loss of the waterproof film 10 in the pressed state is obtained.

[0069] Attach the waterproof film 10 to the first bonding area of the support area 121 so that the waterproof film 10 covers the second sound transmission hole 122 and activates the adhesive on the back of the waterproof film 10 to ensure that the waterproof film 10 can cover the second sound transmission hole 122. Then, use the second clamping plate 120 and the first clamping plate 110 to press the waterproof film 10 onto the support area 121, and the actual use condition of the waterproof film 10 installed on the electronic device can be simulated. Subsequently, test the sound insertion loss of the waterproof film 10 at this time, and the obtained sound insertion loss data of the waterproof film 10 will be closer to the sound insertion loss data during the actual application of the waterproof film 10, providing more accurate data for the selection of the waterproof film 10 for the electronic device and minimizing the impact on the final acoustic performance of the electronic device as much as possible.

[0070] Among them, in order to facilitate the adjustment of the distance between the first clamping plate 110 and the second clamping plate 120 to precisely control the pressing degree of the waterproof film 10, when the waterproof film 10 to be tested needs to be placed on the support area 121 in the above test method, a support gasket 300 is used and placed in the gap between the first clamping plate 110 and the second clamping plate 120. The support gasket 300 can adjust different thicknesses according to different pressing requirements. Since the support gasket 300 is located between the first clamping plate 110 and the second clamping plate 120, the thickness of the support gasket 300 is used to control the gap between the first clamping plate 110 and the second clamping plate 120. When the first clamping plate 110 and the second clamping plate 120 clamp the support gasket 300 under the drive of the clamping mechanism 130, the gap between the first clamping plate 110 and the second clamping plate 120 is equal to the thickness of the support gasket 300, thereby precisely controlling the pressing degree of the waterproof film 10 to adapt to the test of the electronic waterproof film 10 at different working heights.

[0071] Refer to Figure 4 and Figure 6 The present invention also provides a test method for an electronic waterproof film sound insertion loss test device as described above, which is used to test the sound insertion loss of the waterproof film in a non-pressed state, and it includes:

[0072] Emit a test audio on the side of the second sound transmission hole 122 facing away from the first sound transmission hole 111, and use the sound receiver 200 to receive the audio to obtain the no-load audio curve when the waterproof film 10 is not attached.

[0073] Place the waterproof film 10 to be tested on the support area 121, and attach the waterproof film 10 to the second bonding area so that the waterproof film 10 covers the second sound transmission hole 122.

[0074] Emit a test audio on the side of the second sound transmission hole 122 facing away from the first sound transmission hole 111, and use the sound receiver 200 to receive the audio to obtain the audio curve after the waterproof film 10 is in a non-pressed state.

[0075] Subtract the audio curve after the waterproof film 10 is in the un-pressed state from the no-load audio curve when the waterproof film 10 is not mounted, and the sound insertion loss of the waterproof film 10 in the un-pressed state can be obtained.

[0076] Therefore, through the above test method, the sound insertion loss of the waterproof film 10 in the un-pressed state can be obtained.

[0077] Moreover, to prevent sound leakage from the side, when the waterproof film 10 to be tested needs to be placed in the support area 121, an anti-sound-leakage gasket is placed in the gap between the first clamping plate 110 and the second clamping plate 120, and the distance between the first clamping plate 110 and the second clamping plate 120 is adjusted by the clamping mechanism 130 to clamp the anti-sound-leakage gasket between the first clamping plate 110 and the second clamping plate 120. That is, the gap between the first clamping plate 110 and the second clamping plate 120 is sealed by the anti-sound-leakage gasket to improve the accuracy of the test data. Among them, the anti-sound-leakage gasket is an ultra-thin closed-cell foam gasket to better prevent sound leakage from the side.

[0078] In summary, the electronic waterproof film sound insertion loss test device and test method of this embodiment use the first clamping plate 110 and the second clamping plate 120 to press the waterproof film 10 in the support area 121, and a first sound passing hole 111 is provided in the support area 121 of the first clamping plate 110. The audio curve passing through the waterproof film 10 in the pressed state is received by the sound receiver 200. Then, subtracting the no-load audio curve can obtain the sound insertion loss of the waterproof film 10 after being applied to the actual device. Therefore, this embodiment can simulate the state of the waterproof film 10 under actual working conditions and test the sound insertion loss of the waterproof film 10 after being applied to the actual device, so as to improve the accuracy of the test data, provide more accurate data for the selection of the waterproof film 10 for electronic devices, and minimize the impact on the final acoustic performance of the electronic device as much as possible. Moreover, this embodiment can also test the sound insertion loss of the waterproof film 10 in the un-pressed state, achieving the purpose that a test device can test the sound insertion loss of the waterproof film 10 in two states, that is, serving two purposes with one machine.

[0079] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An electronic waterproof film sound insertion loss test device, characterized in that, include: A test fixture comprising a first clamping plate, a second clamping plate, and a clamping mechanism; the first clamping plate is arranged on one side of the second clamping plate; The second plywood is provided with a supporting area for supporting the waterproof membrane; the supporting area is provided with a second sound hole penetrating the second plywood; the side of the supporting area facing the first plywood is a first fitting area; the side of the supporting area facing away from the first plywood is a second fitting area; the first plywood is provided with a first sound hole penetrating the first plywood at a position corresponding to the second sound hole; the clamping mechanism is used to adjust the distance between the second plywood and the first plywood; when the waterproof membrane is affixed to the first fitting area, the clamping mechanism drives the first plywood and the second plywood to press the waterproof membrane against the supporting area; A sound receiver is arranged on a side of the first clamping plate away from the second sound hole, and the sound receiver covers the first sound hole.

2. The electronic waterproof film sound insertion loss testing device according to claim 1, characterized in that, Also includes: A support gasket; the support gasket is arranged between the first plywood and the second plywood, and the support gasket is used to fill the gap between the first plywood and the second plywood.

3. The electronic waterproof film sound insertion loss test device according to claim 2, characterized in that, The supporting gasket is provided with a third sound hole for avoiding the supporting area, and the third sound hole passes through the supporting gasket.

4. The electronic waterproof film sound insertion loss test device according to claim 1, wherein, The aperture of the first sound hole is smaller than the aperture of the second sound hole.

5. The electronic waterproof film sound insertion loss test device according to claim 1, characterized in that, The clamping mechanism includes multiple clamping parts; the clamping parts have a tightening head and a connecting column; the tightening head is arranged at one end of the connecting column, and the connecting column is provided with an external thread; the first clamping plate is provided with a threaded hole that cooperates with the external thread; the second clamping plate is provided with a through hole; the connecting column passes through the through hole and is threadedly connected to the threaded hole, and the tightening head abuts against the second clamping plate.

6. The electronic waterproof film sound insertion loss test device according to claim 1, characterized in that, Also includes: Fixed seat; The fixing seat is connected to the first clamping plate, and the fixing seat is located on a side of the first clamping plate away from the second clamping plate, and the fixing seat is connected to the sound receiver.

7. The electronic waterproof film sound insertion loss testing device according to claim 1, characterized in that Also includes: The sound generator is arranged on a side of the second splint away from the first sound hole.

8. The electronic waterproof film sound insertion loss testing device according to claim 7, characterized in that, Also includes: test chamber; The inner wall of the test chamber is provided with a sound-absorbing layer; the sound generator, the test tooling, and the sound receiver are all located in the test chamber.

9. The electronic waterproof film sound insertion loss testing device according to claim 7, wherein, Also includes: Signal generation system; The signal generating system is connected to the sounder signal.

10. The electronic waterproof film sound insertion loss test device according to claim 9, characterized in that, Also includes: Data acquisition system; the data acquisition system is connected to the sound receiver signal.

11. The electronic waterproof film sound insertion loss testing device according to claim 10, characterized in that, Also includes: processor; The processor is signal-connected to the signal generating system and the data acquisition system.

12. A testing method using the electronic waterproof film sound insertion loss testing device according to any one of claims 1-11, characterized in that, include: A test audio frequency is emitted from a side of the second acoustic hole facing away from the first acoustic hole, and the audio frequency is received by a sound receiver to obtain a no-load audio frequency curve when the waterproof film is not mounted; Placing a waterproof membrane to be tested on the support area, laminating the waterproof membrane on the first laminating area so that the waterproof membrane covers the second sound hole, and adjusting the distance between the first clamping plate and the second clamping plate using the clamping mechanism so that the second clamping plate cooperates with the first clamping plate to press the waterproof membrane onto the support area; Emit a test audio signal on the side of the second sound through-hole facing away from the first sound through-hole, and use a sound receiver to receive the audio signal to obtain an audio curve after passing through the waterproof film in the pressed state. Subtract the no-load audio curve without mounting the waterproof film from the audio curve after passing through the waterproof film in the pressed state, and the sound insertion loss of the waterproof film in the pressed state can be obtained.

13. The test method of the electronic waterproof film sound insertion loss test device according to claim 12, characterized in that When it is necessary to place the waterproof film to be tested in the support area, a support gasket is used and placed in the gap between the first clamping plate and the second clamping plate.

14. A test method using the electronic waterproof film sound insertion loss test device according to any one of claims 1-11, characterized in that, Comprising: Emit a test audio signal on the side of the second sound through-hole facing away from the first sound through-hole, and use a sound receiver to receive the audio signal to obtain a no-load audio curve without mounting the waterproof film. Place the waterproof film to be tested in the support area, and attach the waterproof film to the second bonding area so that the waterproof film covers the second sound through-hole. Emit a test audio signal on the side of the second sound through-hole facing away from the first sound through-hole, and use a sound receiver to receive the audio signal to obtain an audio curve after passing through the waterproof film in the non-pressed state. Subtract the no-load audio curve without mounting the waterproof film from the audio curve after passing through the waterproof film in the non-pressed state, and the sound insertion loss of the waterproof film can be obtained.

15. The test method of the electronic waterproof film sound insertion loss test device according to claim 14, characterized in that When it is necessary to place the waterproof film to be tested in the support area, a sound leakage prevention gasket is placed in the gap between the first clamping plate and the second clamping plate, and the distance between the first clamping plate and the second clamping plate is adjusted by using the clamping mechanism so that the first clamping plate and the second clamping plate clamp the sound leakage prevention gasket.

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