Air tightness test system

Abstract

The present application discloses an airtightness testing system, which includes a first fixture, a second fixture, a drive assembly, a gas control assembly, and a detection assembly. The first fixture forms a first test cavity for placing a test piece; the second fixture forms a second test cavity for placing a standard piece; the drive assembly is connected to the first fixture and the second fixture, and is used to drive the first fixture to open or close the first test cavity, and drive the second fixture to open or close the second test cavity; the gas control assembly is connected to the first test cavity and the second test cavity, and is used to input or extract gas of the same pressure into or out of the first test cavity and the second test cavity; the detection assembly is used to detect the gas pressure difference between the first test cavity and the second test cavity. The present application can automatically detect the airtightness of the test piece, and the detection accuracy is relatively high.

Description

Technical Field

[0001] The present application relates to the technical field of air tightness testing, and in particular to an air tightness testing system. Background Art

[0002] After some devices are manufactured, they generally need to be tested for airtightness, etc. Usually, a pointer pressure gauge is used, and the entire airtightness test process is manually operated. This is not only backward in technology and inefficient, but also has a significant impact on human factors, resulting in poor test accuracy. Summary of the Invention

[0003] The present application proposes an airtightness testing system that can automatically test with high testing accuracy.

[0004] In order to solve the above technical problems, the present application proposes an air tightness testing system, which includes a first fixture, a second fixture, a driving component, an air control component and a detection component;

[0005] The first fixture is formed with a first test cavity for placing the test piece;

[0006] The second fixture is formed with a second test cavity for placing the standard component;

[0007] The driving assembly is connected to the first clamp and the second clamp, and is used to drive the first clamp to open or close the first test cavity, and drive the second clamp to open or close the second test cavity;

[0008] The gas control assembly is connected to the first test chamber and the second test chamber, and is used to input or extract gas of the same pressure into or from the first test chamber and the second test chamber;

[0009] The detection component is used to detect the gas pressure difference between the first test chamber and the second test chamber.

[0010] The first fixture includes a first sealing structure surrounding the first test cavity, the first sealing structure forms a first cavity in the first fixture, and a first through hole is provided on the first fixture to connect the first cavity with the external environment;

[0011] The second fixture includes a second sealing structure surrounding the second test cavity. The second sealing structure enables the second fixture to form a second cavity. The second fixture is provided with a second through hole connecting the second cavity and the external environment.

[0012] Among them, the first clamp and the second clamp both include an upper template and a lower template, the upper template is formed with an upper groove, and the lower template is formed with a lower groove, the driving component is connected to the upper template, and drives the upper template to be pressed against the lower template so that the upper groove and the lower groove constitute a test cavity.

[0013] Among them, the lower groove is a semi-annular groove, an inner sealing ring is provided on the inner side of the lower groove, and an outer sealing ring is provided on the outer side of the lower groove; the lower template is provided with a through hole connected to the external environment in the area surrounded by the inner sealing ring, or the position of the upper template corresponding to the area surrounded by the inner sealing ring.

[0014] The lower template is provided with a bump adapted to the device to be tested, and the lower groove includes a receiving groove formed on the bump.

[0015] The protrusion is connected to the lower template through a fixing piece, the fixing piece is inserted into a fixing hole on the lower template, and a third through hole communicating with the fixing hole is provided on the fixing piece.

[0016] The fixing member is a bolt, and the third through hole passes through the bolt in the axial direction of the bolt.

[0017] The device to be tested is an earphone, which includes a semi-circular connecting portion, two ear-worn portions respectively connected to two ends of the connecting portion, and two sound-producing portions respectively connected to the two ear-worn portions;

[0018] The lower groove further comprises a connecting groove and a pronunciation groove, and the connecting groove, the containing groove and the pronunciation groove are separately arranged;

[0019] When the second template is pressed onto the first template, the upper groove enables the connecting portion groove, the accommodating groove and the sounding portion groove to form a communicating test cavity.

[0020] An air inlet hole is provided on the groove wall of the lower groove, and the air control component is connected to the air inlet hole.

[0021] The driving assembly drives the first clamp and the second clamp simultaneously to open or close the first test cavity and the second test cavity simultaneously.

[0022] In the present application, a test piece can be placed in the first test cavity in the first fixture, and a standard piece can be placed in the second test cavity in the second fixture. The driving component then controls the first test cavity and the second test cavity to be closed, and the gas control component inputs gas into the first test cavity and the second test cavity. The gas pressure difference in the first test cavity and the second test cavity is then detected by the detection component to detect the airtightness of the test piece. After the detection is completed, the gas control component can extract the gas in the first test cavity and the second test cavity, and the driving component can then control the first test cavity and the second test cavity to be opened to facilitate the removal of the standard piece and the test piece from the first test cavity and the second test cavity. Thus, the airtightness testing system of the present application can automatically test the airtightness of the test piece, and the test accuracy is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a structural diagram of an embodiment of an airtightness testing system of the present application;

[0025] Figure 2 This is an exploded schematic diagram of an embodiment of the first clamp and the second clamp in the air tightness testing system of the present application;

[0026] Figure 3 This is a structural diagram of an embodiment of an upper template in the air tightness test system of the present application;

[0027] Figure 4 This is a structural diagram of an embodiment of a lower template in the air tightness test system of the present application;

[0028] Figure 5 yes Figure 4 A partial schematic diagram of area A in the lower template shown;

[0029] Figure 6 This is a schematic structural diagram of an embodiment of the present application headset. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] After some devices are manufactured, they need to be tested for airtightness, etc. The airtightness of the device can be tested using an airtightness test system.

[0032] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of the airtightness test system of this application. Figure 1 As shown, the air tightness testing system 1 includes a first fixture 100 , a second fixture 200 , a driving assembly 300 , an air control assembly 400 and a detection assembly 500 .

[0033] The first fixture 100 is formed with a first test cavity 130 for placing a test piece.

[0034] The second fixture 200 is formed with a second test cavity 230 for placing a standard.

[0035] The driving assembly 300 is connected to the first fixture 100 and the second fixture 200 , and is used to drive the first fixture 100 to open or close the first test cavity 130 , and to drive the second fixture 200 to open or close the second test cavity 230 .

[0036] The gas control assembly 400 is connected to the first test chamber 130 and the second test chamber 230 , and is used to input or extract gas of the same pressure into or from the first test chamber 130 and the second test chamber 230 .

[0037] The detection assembly 500 is used to detect the gas pressure difference between the first test chamber 130 and the second test chamber 230 .

[0038] During the test, a test piece is placed in the first test cavity 130 in the first fixture 100, and a standard piece is placed in the second test cavity 230 in the second fixture 200. Then, the driving component 300 controls the first test cavity 130 and the second test cavity 230 to be closed, and the gas control component 400 inputs gas of the same pressure into the first test cavity 130 and the second test cavity 230. Then, the gas pressure difference in the first test cavity 130 and the second test cavity 230 is detected by the detection component 500 to detect the airtightness of the test piece. After the detection is completed, the gas control component 400 can extract the gas in the first test cavity 130 and the second test cavity 230, and then the first test cavity 130 and the second test cavity 230 can be controlled to open by the driving component 300 to facilitate the removal of the test piece and the standard piece from the first test cavity 130 and the second test cavity 230.

[0039] In this embodiment, the steps of filling the first test chamber 130 and the second test chamber 230 with gas and checking the gas pressure difference may include: filling - balancing - small leakage - large leakage - deflation.

[0040] Specifically, during the inflation phase, after the amount of gas input into the first and second test chambers 130 and 230 reaches a first preset value or the gas input time reaches a second preset value, the gas control assembly 400 can stop inputting gas into the first and second test chambers 130 and 230. For a period of time thereafter, the pressure in the first and second test chambers 130 and 230 will be the same, i.e., in equilibrium. After a period of equilibrium, if the test piece has a small leak, the gas in the first test chamber 130 will enter the test piece through the leak, reducing the air pressure in the first test chamber 130. The detection assembly 500 will then detect the difference between the air pressures in the first and second test chambers 130 and 230. If the difference detected by the detection assembly 500 is greater than a first threshold, the test piece is determined to be a minor leak and unqualified, and the deflation phase is entered. If, after a period of minor leak testing, the difference detected by the detection assembly 500 is less than or equal to the first threshold, the test piece enters the major leak testing phase. During a major leak test, the first test chamber 130 is connected to the first gas container, and the second test chamber 230 is connected to the second gas container. The gas in the first test chamber 130 is injected into the first gas container, and the gas in the second test chamber 230 is injected into the second gas container. After a period of time, the detection component 500 detects the difference in air pressure between the first test chamber 130 and the second test chamber 230. If the pressure difference exceeds a second threshold, the test piece is judged to be a major leak and unqualified, and the deflation phase begins. If the pressure difference does not exceed the specified range, the test piece is judged to be qualified and the deflation phase begins. During the deflation phase, the air in the first test chamber 130 and the second test chamber 230 is extracted.

[0041] The driving assembly 300 can simultaneously drive the first fixture 100 and the second fixture 200 to simultaneously open or close the first test cavity 130 and the second test cavity 230 .

[0042] In one implementation, the driving assembly 300 may include a first driving device and a second driving device for driving the first clamp 100 and the second clamp 200 respectively.

[0043] In another embodiment, the drive assembly 300 may include a drive device. The output shaft of the drive device is connected to the first clamp 100 and the second clamp 200 via a connecting frame, so that when the output shaft of the drive device is extended, the first clamp 100 and the second clamp 200 are closed simultaneously; when the output shaft of the drive device is retracted, the first clamp 100 and the second clamp 200 are opened simultaneously.

[0044] In this embodiment, the driving assembly 300 may include a cylinder, a motor or other driving devices.

[0045] Optionally, the gas control assembly 400 may include a gas tank, an air inlet pipe, a first branch pipe, a second branch pipe, and a gas container. The detection assembly 500 may include a differential pressure sensor.

[0046] Specifically, the gas tank is connected to the first test cavity 130 and the second test cavity 230 respectively through two air inlet pipes, and the first test cavity 130 and the second test cavity 230 can be inflated through the air inlet pipes.

[0047] Optionally, two first branch pipes may be provided. One end of each first branch pipe is connected to an air inlet pipe. The other end of each first branch pipe is connected to an air inlet of a differential pressure sensor. The first test chamber 130 is connected to an air inlet pipe and a first branch pipe, while the second test chamber 230 is connected to another air inlet pipe and another first branch pipe. In this way, when the gas tank is no longer inflating the first and second test chambers 130 and 230, the differential pressure sensor can detect the differential pressure between the first and second test chambers 130 and 230, allowing for a small leak test.

[0048] Optionally, two second branch pipes and two gas containers may be provided. One end of each second branch pipe is connected to an air inlet pipe. The other end of each second branch pipe is connected to a gas container. The first test chamber 130 is connected to an air inlet pipe, a first branch pipe, a second branch pipe, and a gas container, while the second test chamber 230 is connected to another air inlet pipe, another first branch pipe, another second branch pipe, and another gas container. In this way, after the gas tank has completed filling the first and second test chambers 130 and 230, the differential pressure sensor can detect the differential pressure between the first and second test chambers 130 and 230, allowing for a major leak test.

[0049] It is understandable that in order to conveniently control the flow direction of gas in each tube, a valve may be provided in each tube.

[0050] like Figure 2 As shown, in this embodiment, the first fixture 100 may include a first sealing structure surrounding the first test cavity 130. The first sealing structure forms a first cavity within the first fixture 100. A first through-hole is provided in the first fixture 100, connecting the first cavity with the external environment. This prevents the presence of the first cavity, which is not connected to the external environment, from causing gas fluctuations in the first test cavity 130. This prevents fluctuations in the pressure differential detected by the detection assembly 500 due to the first cavity, thereby ensuring the accuracy of the airtightness test results.

[0051] Second fixture 200 includes a second sealing structure surrounding second test cavity 230. This second sealing structure forms a second cavity within second fixture 200. A second through-hole is provided in second fixture 200, connecting the second cavity with the external environment. This prevents the presence of the second cavity, which is not connected to the external environment, from causing gas fluctuations within second test cavity 230. This prevents fluctuations in the pressure differential detected by detection assembly 500 due to the second cavity, thereby ensuring the accuracy of the airtightness test results.

[0052] In one implementation, the first test cavity 130 and the second test cavity 230 may be annular structures. The first sealing structure and the second sealing structure may be disposed around the inner rings of the first test cavity 130 and the second test cavity 230, respectively. Thus, the first test cavity 130 is disposed around the periphery of the first cavity formed by the first sealing structure and the first fixture 100. The second test cavity 230 is disposed around the periphery of the second cavity formed by the second sealing structure and the second fixture 200.

[0053] In another implementation, the first test cavity 130 and the second test cavity 230 can have any structure. The first and second sealing structures can be disposed around the periphery of the first and second test cavities 130 and 230. Thus, the first cavity formed by the first sealing structure, the periphery of the first test cavity 130, and the first fixture 100 can be nested around the periphery of the first test cavity 130. The second cavity formed by the second sealing structure, the periphery of the second test cavity 230, and the second fixture 200 can be nested around the periphery of the second test cavity 230.

[0054] Optionally, see Figure 2 The first fixture 100 and the second fixture 200 each include an upper template 120 and a lower template 110. A drive assembly 300 is connected to the upper template 120, driving the upper template 120 to press against the lower template 110, so that the upper template 120 and the lower template 110 cooperate to form a test cavity. Specifically, during testing, the drive assembly 300 drives the upper template 120 to press against the lower template 110. When not in the testing state, the upper template 120 may or may not be pressed against the lower template 110.

[0055] Further, please see Figure 3 The upper template 120 is formed with an upper groove 122, and the lower template 110 is formed with a lower groove 111. The upper groove 122 and the lower groove 111 cooperate to form a test cavity. In other embodiments, only one of the upper template 120 and the lower template 110 may have a groove, and the groove can cooperate with the other template 120 and the lower template 110 to form a test cavity.

[0056] Among them, the lower groove 111 can be a semi-annular groove. An inner sealing ring can be provided on the inner side of the lower groove 111, and an outer sealing ring can be provided on the outer side of the lower groove 111. Among them, the semi-annular shape is not strictly a semi-annular shape, as long as it is a non-closed annular shape. And the lower groove 111 can be generally in a regular shape such as an arc, or can be in an irregular shape. It can be understood that the outer sealing ring can cooperate with the lower template 110 and the upper template 120 to form a cavity. The inner sealing ring provided on the inner side of the lower groove 111 can divide the cavity into a sub-cavity and a test cavity for accommodating test pieces or standard parts, which can reduce the volume of the test cavity for accommodating test pieces or standard parts, so that when the pressure in the test cavity changes slightly, the pressure change can be accurately tested, thereby improving the sensitivity of the air tightness test.

[0057] In one implementation, a sealing ring groove 118 for accommodating the inner sealing ring and the outer sealing ring may be provided on the lower template 110, which can facilitate the setting of the inner sealing ring and the outer sealing ring and prevent the inner sealing ring and the outer sealing ring from being displaced to avoid affecting the air tightness test results.

[0058] In another implementation, the inner sealing ring and the outer sealing ring may be fixed to the lower template 110 or the upper template 120 by bonding.

[0059] Optionally, the lower template 110 may be provided with a through hole 113 within the area enclosed by the inner sealing ring. The through hole 113 allows the sub-cavity to communicate with the external environment, preventing gas fluctuations in the test cavity caused by the presence of the sub-cavity not connected to the external environment, thereby avoiding affecting the air tightness test results and ensuring the accuracy of the air tightness test results.

[0060] It is understandable that a through hole 113 may also be provided at a position of the upper template 120 corresponding to the area enclosed by the inner sealing ring.

[0061] In this embodiment, a protrusion 112 adapted to fit a standard piece or a test piece is provided on the lower template 110. The lower recess 111 may include a receiving groove 1112 formed on the protrusion 112 to facilitate supporting and fixing the standard piece or the test piece.

[0062] In one implementation, the protrusion 112 may be integrally formed with the lower template 110 .

[0063] like Figure 4 and Figure 5 As shown, in another implementation, the protrusion 112 is connected to the lower template 110 via a fixing member 114, so as to avoid the protrusion 112 and the lower template 110 being integrally formed, which would increase the manufacturing difficulty. The fixing member 114 can be a bolt, stud, screw or rivet.

[0064] In addition, the fixing member 114 can be inserted into the fixing hole 115 on the lower template 110. The fixing member 114 is provided with a third through hole 1141 communicating with the fixing hole 115.

[0065] The inventors of this application discovered that when the bump 112 is fixed to the lower template 110 via the fixing member 114, the gas in the fixing hole 115 and the gas in the receiving groove 1112 both exert a certain force on the fixing member 114. When the fixing hole 115 and the receiving groove 1112 are not connected, when the airtightness performance of the device is tested, the pressure in the receiving groove 1112 changes, while the pressure in the fixing hole 115 does not change or only changes slightly. As a result, among the forces exerted on the fixing member 114, only the force exerted on the fixing member 114 by the gas in the receiving groove 1112 changes. As a result, the force on the fixing member 114 is unbalanced, which may cause the fixing member 114 to move, thereby affecting the airtightness test results. Therefore, the present application connects the fixing hole 115 and the receiving groove 1112 via the third through hole 1141, which can prevent the fixing member 114 from being subjected to unbalanced force and prevent the fixing member 114 from moving due to the pressure change in the receiving groove 1112.

[0066] In addition, due to workmanship accuracy issues, the volumes of the fixing hole 115 of the second fixture 200 and the first fixture 100 are not guaranteed to be consistent, and the fixing part 114 may not be completely matched with the fixing hole 115, and the fixing hole 115 cannot be blocked. During the air tightness test, the amount of gas leaked from the storage groove 1112 to the fixing hole 115 in the same amount of time may be different. As a result, due to the different amounts of leaked gas, there will be a difference between the air pressure in the second test cavity 230 in the second fixture 200 and the air pressure in the first test cavity 130 in the first fixture 100, which will lead to errors in the gas pressure difference measured during the air tightness test. The inventors of the present application discovered that compared to the case where the fixing hole 115 and the receiving groove 1112 are not connected, by adding the third through hole 1141 to connect the fixing hole 115 and the receiving groove 1112, after a certain pressure of gas is filled into the test cavity in the second fixture 200 and the first fixture 100 during the air tightness test, the air pressure in the fixing hole 115 is the same as the air pressure in the receiving groove 1112, and the problem of gas leakage caused by the difference in air pressure between the fixing hole 115 and the receiving groove 1112 may not occur, thereby avoiding errors caused by different amounts of gas entering.

[0067] The third through hole 1141 only needs to connect the fixing hole 115 and the receiving groove 1112, and the specific location is not limited. Preferably, the third through hole 1141 passes through the fixing member 114 in the axial direction of the fixing member 114, which can reduce the difficulty of forming the third through hole 1141 on the fixing member 114.

[0068] Furthermore, if Figure 6As shown, the semi-circular device can be an earphone 200. The earphone 200 can include a semi-circular connecting portion 210, two ear-worn portions 220 respectively connected to both ends of the semi-circular connecting portion 210, and two sound-producing portions 230 respectively connected to the two ear-worn portions 220. The earphone 200 can be a bone conduction earphone or other earphone.

[0069] Accordingly, if Figure 4 As shown, the lower groove 111 includes a connecting groove 1111, a protrusion 112 and a pronunciation groove 1113. The protrusion 112 may be formed with a receiving groove 1112. The connecting groove 1111, the receiving groove 1112 and the pronunciation groove 1113 are separately arranged.

[0070] Specifically, if Figure 3 As shown, upper template 120 is provided with an upper groove 122 corresponding to protrusion 112 and pronunciation groove 1113. When upper template 120 is pressed against lower template 110, upper groove 122 connects connecting groove 1111, receiving groove 1112, and pronunciation groove 1113 to form a connected test cavity. The test cavity formed by upper groove 122 on upper template 120, connecting groove 1111, receiving groove 1112, and pronunciation groove 1113 on lower template 110, can be compatible with earphone 200, thereby improving the accuracy of airtightness test results.

[0071] In order to facilitate the filling of the test chamber, Figure 2 and Figure 4 As shown, an air inlet hole 116 may be formed on the groove wall of the lower groove 111 . Furthermore, the air control component 400 is connected to the air inlet hole 116 .

[0072] Specifically, when the semi-annular device is an earphone 200 , an air inlet 116 may be formed on the groove wall of the connecting portion groove 1111 .

[0073] The air inlet 116 can be connected to the test chamber. It is understood that when testing the airtightness of the earphone 200, air can be inflated into the test chamber through the air inlet 116. When the air is inflated to a certain level, the inflation can be stopped, and the pressure change in the test chamber can be measured. Furthermore, the air inlet 116 can also be used to exhaust air after the test is completed.

[0074] In one implementation, the air inlet 116 may be two interconnected blind holes provided on the lower template 110. The openings of the two blind holes are respectively connected to the test cavity and the air inlet pipe in the air tightness test system 1, so that the air inlet pipe can inflate the interior of the test cavity through the two blind holes.

[0075] In another embodiment, the air inlet 116 may be a through hole provided on the wall of the lower groove 111. The two ends of the through hole on the wall are respectively connected to the test cavity and the air inlet pipe. In this way, air can be charged into the test cavity through the through hole on the wall, reducing the required processing accuracy.

[0076] like Figure 2 As shown, further, a first positioning structure 117 may be formed on the outer side of the outer sealing ring, which cooperates with the second positioning structure 121 on the upper template 120 to accurately press the upper template 120 onto the lower template 110. The first positioning structure 117 and the second positioning structure 121 may be mutually cooperating positioning columns and positioning holes.

[0077] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An airtightness testing system, characterized in that: The air tightness testing system comprises: a first fixture, formed with a first test cavity for placing a test piece; A second fixture is formed with a second test cavity for placing a standard component; a driving assembly connected to the first fixture and the second fixture, configured to drive the first fixture to open or close the first test cavity, and to drive the second fixture to open or close the second test cavity; a gas control component connected to the first test chamber and the second test chamber, and configured to input or extract gas of the same pressure into or from the first test chamber and the second test chamber; A detection component, configured to detect a gas pressure difference between the first test chamber and the second test chamber; The first fixture and the second fixture both include an upper template and a lower template, the lower template is formed with a lower groove, and the lower groove cooperates with the upper template to form a test cavity; the lower template is provided with a protrusion adapted to the device to be tested, and the lower groove includes a receiving groove formed on the protrusion; the protrusion is connected to the lower template through a fixing member, and the fixing member is inserted into the fixing hole on the lower template, and the fixing member is provided with a third through hole for connecting the fixing hole and the receiving groove.

2. The test system according to claim 1, wherein: The first fixture includes a first sealing structure surrounding the first test cavity, the first sealing structure forms a first cavity in the first fixture, and the first fixture is provided with a first through hole connecting the first cavity with the external environment; The second fixture includes a second sealing structure surrounding the second test cavity. The second sealing structure enables the second fixture to form a second cavity. The second fixture is provided with a second through hole connecting the second cavity and the external environment.

3. The test system according to claim 1, wherein: An upper groove is formed on the upper template. The driving assembly is connected to the upper template and drives the upper template to be pressed against the lower template, so that the upper groove and the lower groove form a test cavity.

4. The test system according to claim 3, characterized in that: The lower groove is a semi-annular groove, an inner sealing ring is provided on the inner side of the lower groove, and an outer sealing ring is provided on the outer side of the lower groove; the lower template is provided with a through hole connected to the external environment within the area enclosed by the inner sealing ring, or the position of the upper template corresponding to the area enclosed by the inner sealing ring.

5. The test system according to claim 1, wherein: The fixing member is a bolt, and the third through hole penetrates the bolt in the axial direction of the bolt.

6. The test system according to claim 3, wherein: The device under test is an earphone, which includes a semi-circular connecting portion, two ear-worn portions respectively connected to two ends of the connecting portion, and two sound-producing portions respectively connected to the two ear-worn portions; The lower groove further comprises a connecting groove and a pronunciation groove, wherein the connecting groove, the containing groove and the pronunciation groove are arranged separately; When the upper template is pressed onto the lower template, the upper groove enables the connecting portion groove, the accommodating groove and the sounding portion groove to form a communicating closed cavity.

7. The test system according to claim 3, wherein: An air inlet hole is provided on the groove wall of the lower groove, and the air control component is connected to the air inlet hole.

8. The test system according to claim 1, wherein: The driving assembly drives the first clamp and the second clamp simultaneously to open or close the first test cavity and the second test cavity simultaneously.

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