CN218066929U - Small loudspeaker air tightness testing device - Google Patents
Small loudspeaker air tightness testing device Download PDFInfo
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- CN218066929U CN218066929U CN202222014260.7U CN202222014260U CN218066929U CN 218066929 U CN218066929 U CN 218066929U CN 202222014260 U CN202222014260 U CN 202222014260U CN 218066929 U CN218066929 U CN 218066929U
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Abstract
The utility model discloses a small loudspeaker air tightness testing device, which comprises a testing jig, an air pump device, a driving device and a control device; the test fixture comprises an upper fixture mould and a lower fixture mould; the lower jig die is detachably mounted on the working table surface and is provided with a plurality of upward placing stations for placing workpieces to be tested; the fixture lower dies are provided with a plurality of lower dies, and the placing stations of the fixture lower dies are different in shape; the upper jig mould is provided with a plurality of soft pressure testing units corresponding to the placing stations, each soft pressure testing unit comprises an air pipe, the upper end of each air pipe is communicated with the air pump equipment, and the lower end of each air pipe is provided with a flexible rubber nozzle; the jig upper die is connected with the driving device, and the driving device drives the jig upper die to move up and down. The utility model improves the universality of the testing device through the replaceable jig lower die; the reliability of the testing device is improved by the flexible pressure testing unit which can generate elastic deformation.
Description
Technical Field
The utility model belongs to gas tightness test field, concretely relates to small-size speaker gas tightness testing arrangement.
Background
In the wireless earphone field, wireless earphone small in size nevertheless has the shortcoming that drops easily at the in-process of wearing, and when wireless earphone carelessly fell into the aquatic, inside water got into the earphone from the speaker, can damage the earphone. Therefore, it is important to test the waterproof performance of the earphone speaker.
In the prior art, the waterproof performance of the earphone is often tested in a mode of testing the air tightness of the earphone, but when the method is used for testing the waterproof performance of the loudspeaker of the earphone, only one or two earphones can be tested at one time, and the testing efficiency is low. The air tightness test device mentioned in patent with publication number CN214667441U only tests the water resistance of two earphone speakers each time, and the test efficiency is low; and the testing device can only test one product, and has low universality.
Disclosure of Invention
To the problem among the prior art, the utility model provides a small-size speaker gas tightness testing arrangement, this device tests the waterproof nature of speaker through the mode of testing earphone speaker gas tightness. The testing device can test the loudspeakers of the earphones at one time, and the testing results are independent and do not influence each other, so that the testing efficiency is effectively improved; meanwhile, the fixture lower die of the test fixture of the device is replaceable, and the universality of the equipment is improved.
The utility model discloses a realize like this: a small loudspeaker air tightness testing device comprises a testing jig, air pump equipment, a driving device and a control device;
the test fixture comprises a fixture upper die and a fixture lower die; the lower jig die is detachably mounted on the working table surface and is provided with a plurality of upward placing stations for placing workpieces to be tested; the jig lower dies are provided with a plurality of jig lower dies, the placing stations of the jig lower dies are different in shape, and when the model of a workpiece to be tested is changed, the corresponding jig lower die can be replaced, so that the universality of the testing device is improved;
the jig upper die is provided with a plurality of soft pressure testing units corresponding to the placing stations, each soft pressure testing unit comprises an air pipe, the upper end of each air pipe is communicated to the air pump equipment, and the lower end of each air pipe is provided with a flexible rubber nozzle; the air pump equipment sucks or blows air into the air pipe;
the jig upper die is connected with the driving device, and the driving device drives the jig upper die to move up and down;
when the upper jig die moves downwards to be close to the lower jig die, the opening at the lower end of the flexible rubber nozzle is pressed on the workpiece to be tested, the flexible rubber nozzle is elastically deformed and tightly attached to the workpiece to be tested, and air leakage during testing is prevented;
the control device is connected with the air pump equipment and the driving device, and the control device controls the starting and stopping of the air pump equipment and the lifting of the driving device.
Preferably, the testing device further comprises a base and a testing cavity, the working table is arranged at the upper end of the base, the base is further provided with a plurality of start-stop buttons, and the start-stop buttons are used for controlling the start and stop of the testing device; the base is a hollow cavity, so that the wiring of the button can be arranged in the base;
the testing cavity is a space with one open surface and the other closed surface, and the testing device, the air pump equipment and the driving device are arranged in the testing cavity.
Specifically, the front in test chamber is located to the open surface, just right face when openly being operating personnel operating equipment still is equipped with safety arrangement simultaneously to the open surface, safety arrangement covers whole open surface, safety arrangement is used for protecting operating personnel's personal safety, works as when safety arrangement senses the object, can stop testing arrangement operation, prevents that testing arrangement from hindering the people.
Preferably, an air source processing device is further arranged in the test cavity and comprises a valve, an air pressure controller and a filter which are sequentially connected, and the valve is connected with an external air source; the gas source processing device is used for carrying out primary treatment on external gas entering the testing device, reducing moisture entering the testing device and preventing the moisture from being blown to a workpiece to be tested when the flexible air faucet blows.
Specifically, the tail end of the air source processing device is connected with air pump equipment, the air pump equipment is arranged on the back of the air source processing device and comprises an air path on-off controller and an air pump, and the air path on-off controller is connected with the air source processing device; the air pump is arranged below the air path on-off controller, the front end of the air pump is connected with the air path on-off controller, and the rear end of the air pump is connected with the soft pressure testing unit; the air path on-off controller is used for controlling the on-off of an air path of the testing equipment, namely a switch for sucking or blowing air of the soft pressure testing unit; the air pump provides the power of breathing in or blowing for testing arrangement.
Preferably, the soft pressure test unit further comprises an auxiliary pressing support, and the auxiliary pressing support is used for pressing the workpiece to be tested during testing, so that the phenomenon that the workpiece to be tested shakes during testing to cause air leakage and influence a test result is prevented; the center of the auxiliary pressing support is provided with a through hole, and the soft pressing test unit penetrates through the through hole in the center of the auxiliary pressing support, so that the auxiliary pressing support is guaranteed to tightly press a workpiece to be tested, and the soft pressing test unit can be in close contact with the workpiece to be tested.
The two sides of the auxiliary pressing bracket are provided with movable guide posts, the lower ends of the guide posts are fixedly connected with the auxiliary pressing bracket bottom plate, the upper ends of the guide posts penetrate through guide through holes arranged on the upper die of the jig, and the auxiliary pressing bracket is provided with an anti-falling device with the diameter larger than the aperture of the through holes; the guide post is used for providing guidance when the auxiliary pressing support presses the workpiece to be tested.
The guide post is provided with a buffer sleeve, the buffer sleeve is positioned between the auxiliary pressing support bottom plate and the jig upper die, and the length of the buffer sleeve is larger than or equal to the distance between the auxiliary pressing support bottom plate and the jig upper die, so that the force exerted on a workpiece to be tested is reduced, and the workpiece to be tested is prevented from being damaged.
The buffer sleeve is an elastic element such as a pressure spring or a rubber sleeve.
Preferably, the soft pressure test unit is further connected with an air pressure measuring device, the air pressure measuring device is installed and fixed in the test cavity, the number of the air pressure measuring devices is consistent with that of the soft pressure test units, and each air pressure measuring device corresponds to one soft pressure test unit respectively, so that test results of each test station are independent and do not interfere with each other; the air pressure measuring device is used for testing the change of air pressure in the flexible pressure testing unit during testing, when the air pressure tends to be stable, the workpiece to be tested is qualified, and if the air pressure is continuously increased or decreased, the workpiece to be tested is unqualified.
Preferably, the driving device comprises an executing device arranged at the upper end of the driving device, the lower end of the executing device is connected with the upper die of the jig, and the executing device comprises moving elements such as an air cylinder, a screw rod and a module;
the jig is characterized by also comprising a guide device arranged below the execution device, wherein the guide device is connected with the upper jig die; the guide device is used for ensuring that the upper die of the jig does not shake when moving up and down, and ensuring that the soft pressure test unit can be in close contact with a test workpiece.
Preferably, the control device comprises a parameter setting device, the parameter setting device is arranged in the middle of the equipment testing device, and the parameter setting device is used for setting new testing parameters when the type of the workpiece to be tested is changed, so that the universality of the testing device is improved.
Specifically, the control device further comprises a plurality of switch buttons and data transmission interfaces which are arranged below the parameter control device, and the switch buttons and the data transmission interfaces are arranged in parallel; the switch button is used for controlling the power on and off of the testing device, and the start-stop button and the switch button are separately arranged in order to prevent a worker from mistakenly touching the switch button when operating the start-stop button of the device; the data transmission interface can be used for leading test parameters into the test device or leading the test parameters out of the test device, and the convenience of the test device is improved.
The utility model has the advantages that:
(1) The universality is high: the testing device can be compatible with a plurality of types of workpieces to be tested through the quick replaceable jig lower die, and the universality of the testing device is effectively improved.
(2) The test efficiency is high: the jig of the testing device is provided with a plurality of testing stations, a plurality of products can be tested simultaneously, and the testing efficiency is effectively improved.
(3) The reliability is strong: when the soft pressure testing unit of the testing device is contacted with the workpiece to be tested, the workpiece to be tested is tightly attached through elastic deformation, air leakage is prevented, misjudgment is reduced, and the testing reliability is improved.
Drawings
Fig. 1 is an overall schematic view of the testing device of the present invention;
FIG. 2 is a schematic view of the inside of a testing chamber of the testing device of the present invention;
FIG. 3 is another schematic view of the interior of the testing chamber of the testing device of the present invention;
fig. 4 is a schematic view of a fixture of the testing device of the present invention;
FIG. 5 is a schematic view of a soft pressure testing unit of the testing device of the present invention;
fig. 6 is another schematic view of the soft pressure testing unit of the testing device of the present invention;
fig. 7 is a schematic diagram of a control device of the testing device of the present invention.
Reference numerals are as follows:
1. a base; 2. a test chamber; 3. a control device; 11. a start-stop button; 21. a jig lower die; 22. an upper jig die; 23. a drive device; 24. an air source processing device; 25. a safety grating; 31. a touch screen; 32. a switch button; 33. a USB interface; 34. a test result indicator light; 211. a test station; 221. a soft pressure test unit; 231. a cylinder; 232. a guide rail; 241. a triplet; 242. an electromagnetic valve; 243. a vacuum generator; 2211. a flexible glue nozzle; 2212. an air tube; 2213. an auxiliary pressing bracket; 2411. a valve; 2412. a pressure regulating meter; 2413. a filter; 22131. a guide post; 22132. the auxiliary pressing support bottom plate; 22133. a gasket; 22134. a rubber sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-7, a testing device for air tightness of a small speaker comprises a base 1, a testing chamber 2 and a control device 3, which are arranged from bottom to top in sequence,
in this embodiment, the base 1 is a hollow cavity, and 3 start-stop buttons 11 are arranged on the front surface of the base 1; the start-stop button 11 is a start button started by 2 hands and then a scram button 1, and is used for controlling the start and stop of the test device respectively, and the base 1 is a hollow cavity, so the inside of the base 1 can be used for wiring the buttons.
In this embodiment, the test chamber 2 is a chamber with one open side and the other closed side; the front of test chamber 2 is located to the opening face, and the opening face still is equipped with safety arrangement simultaneously, safety arrangement specifically is safety grating 25, safety grating 25 covers whole opening face for protection operating personnel's personal safety, works as when safety grating 25 senses the object, can stop the testing arrangement operation, prevents that testing arrangement from hindering the people.
In this embodiment, a test fixture is disposed in the test cavity 2, and the test fixture includes a fixture upper mold 22 and a fixture lower mold 21;
the jig upper die 22 is provided with 4 soft pressure test units 221, each soft pressure test unit 221 comprises an air pipe 2212 and a flexible adhesive nozzle 2211 arranged at the lower end of the air pipe 2212, the flexible adhesive nozzle 2211 is subjected to flexible deformation under stress, so that the soft pressure test unit 221 is tightly attached to a workpiece to be tested, air leakage during testing is prevented, the soft pressure test unit 221 is further connected with an air pump device, specifically a vacuum generator 243, and the vacuum generator 243 pumps air from the soft pressure test unit 221 during testing;
the fixture lower die 21 is mounted on the base 1, the fixture lower die 21 is provided with 4 upward test stations 211 corresponding to the soft compression test unit 221 and used for placing workpieces to be tested, and the test stations 211 are used for profiling the workpieces to be tested, so that the internal structure of the test stations 211 is adapted to the appearance of the workpieces to be tested, and rapid positioning is realized; meanwhile, the lower jig dies 21 can be replaced, the placing stations of the lower jig dies are different in shape, and when the workpiece to be tested is replaced, the lower jig dies 21 are replaced to perform adaptation, so that the universality of the testing device is improved.
In this embodiment, the soft pressure testing unit 221 further includes an auxiliary pressing support 2213, where the auxiliary pressing support 2213 is used for pressing a workpiece to be tested during testing, so as to prevent the workpiece to be tested from shaking during testing to cause air leakage and affect a testing result; the center of the auxiliary pressing support 2213 is provided with a through hole, and the soft pressing test unit 221 passes through the through hole in the center of the auxiliary pressing support 2213, so that the auxiliary pressing support 2213 can be pressed on a workpiece to be tested, and meanwhile, the soft pressing test unit 221 can be in close contact with the workpiece to be tested.
Two sides of the auxiliary pressing support 2213 are provided with movable guide posts 22131, the lower ends of the guide posts 22131 are fixedly connected with an auxiliary pressing support bottom plate 22132, the upper ends of the guide posts 22131 penetrate through guide through holes formed in the upper jig die 22, and anti-falling devices, specifically gaskets 22133 with diameters larger than the hole diameters of the through holes are arranged; the guide post 22131 is used for providing guidance when the auxiliary pressing bracket 2213 presses the workpiece to be tested.
The guide post 22131 is provided with a buffer sleeve, specifically a rubber sleeve 22134, the rubber sleeve 22134 is located between the auxiliary pressing support bottom plate 22132 and the jig upper die 22, and the length of the rubber sleeve is equal to the distance between the auxiliary pressing support bottom plate 22132 and the jig upper die 22, so that the force applied to a workpiece to be tested is reduced, and the workpiece to be tested is prevented from being damaged.
In this embodiment, the soft pressure testing unit 221 is further connected to an air pressure measuring device (not shown in the figure), the air pressure measuring device is used for testing the change of the air pressure in the soft pressure testing unit 221 during testing, when the air pressure tends to be stable, the workpiece to be tested is qualified, and if the air pressure continues to increase, the workpiece to be tested is unqualified; the air pressure measuring devices are fixedly arranged in the testing cavity 2, the number of the air pressure measuring devices is consistent with that of the soft pressure testing units 221, and each air pressure measuring device corresponds to one soft pressure testing unit 221, so that the testing results of each testing station 211 are independent and do not interfere with each other.
In this embodiment, the test fixture further includes a driving device 23 disposed behind the test fixture, the driving device 23 is connected to the fixture upper mold 22, and the driving device 23 moves vertically up and down to drive the fixture upper mold 22 to move vertically up and down.
Specifically, the driving device 23 includes an executing device arranged at the upper end of the driving device 23, the executing device is specifically an air cylinder 231, and the lower end of the air cylinder 231 is connected with the upper jig die 22;
the jig is characterized by further comprising a guide device arranged below the air cylinder 231, wherein the guide device is specifically 2 guide rails 232 which are arranged in parallel, and the guide rails 232 are connected with the jig upper die 22; the guide rail 232 is used to ensure that the upper die 22 of the jig does not shake during the up-and-down movement, and ensure that the soft pressure testing unit 221 can be in close contact with the test workpiece.
In this embodiment, an air source processing device 24 is further disposed in the testing chamber 2, the air source processing device 24 is specifically a triple 241, the triple 241 includes a valve 2411, a pressure regulating valve and a filter 2413, which are sequentially connected, and the valve 2411 is connected to an external air source; the triple piece 241 is used for performing preliminary treatment on external gas entering the testing device, and reducing moisture entering the testing device.
Specifically, the end of the triple 241 is connected to an air pump device, the air pump device is disposed on the back of the air source processing device 24, and includes an air path on-off controller and an air pump, the air path on-off controller is specifically an electromagnetic valve 242, the air pump is specifically a vacuum generator 243, and the electromagnetic valve 242 is connected to the triple 241; the flexible pressure testing device further comprises a vacuum generator 243 arranged below the triple piece 241, wherein the front end of the vacuum generator 243 is connected with the electromagnetic valve 242, and the rear end of the vacuum generator 243 is connected with the flexible pressure testing unit 221; the electromagnetic valve 242 is used for controlling the on-off of the air path of the test equipment, namely, a switch for sucking air by the soft pressure test unit 221; the vacuum generator 243 provides suction power for the testing device.
In this embodiment, the control device 3 includes a parameter setting device, the parameter setting device is specifically a touch screen 31, the touch screen 31 is arranged in the middle of the control device 3, and is used for setting new testing parameters when replacing the types of the workpieces to be tested, so that the universality of the testing device is improved.
Specifically, the control device 3 further includes 2 switch buttons 32 and a data transmission interface, which are disposed below the touch screen 31, and the 2 switch buttons 32 and the data transmission interface are arranged in parallel; the switch button 32 is used for controlling the power on and off of the testing device, and the data transmission interface is specifically a USB interface 33, and can be used for importing the testing parameters into the testing device or exporting the testing parameters out of the testing device.
Specifically, the control device 3 further includes 4 sets of test result indicator lamps 34 disposed around the touch screen 31 for displaying the test results.
In this embodiment, the work flow of the testing apparatus is as follows: a worker puts a workpiece to be tested into the testing station 211 of the lower jig die 21, then the device is started, the air cylinder 231 descends to drive the upper jig die 22 to descend, the flexible pressure testing unit 221 is enabled to be abutted against the workpiece to be tested, the flexible pressure testing unit 221 starts to extract air at a testing part of the workpiece to be tested, then pressure is maintained for a period of time, whether the workpiece to be tested is qualified is judged through air pressure change in the flexible pressure testing unit 221 during testing and pressure maintaining, and then a testing result is displayed through the testing result indicating lamp 34. In the embodiment, the lower jig die 21 can be quickly replaced, so that the universality of the testing device is improved; the flexible pressure testing unit 221 can elastically deform under stress and is tightly attached to a workpiece to be tested, so that air leakage is prevented, and the reliability of the testing equipment is improved.
Variations and modifications to the above-described embodiments may occur to those skilled in the art based upon the disclosure and teachings of the above specification. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A small loudspeaker air tightness testing device is characterized in that the testing device comprises a testing jig, air pump equipment, a driving device and a control device;
the test fixture comprises an upper fixture mould and a lower fixture mould; the lower jig die is detachably mounted on the working table surface and is provided with a plurality of upward placing stations for placing workpieces to be tested; the fixture lower dies are provided with a plurality of lower dies, and the placing stations of the fixture lower dies are different in shape;
the jig upper die is provided with a plurality of soft pressure testing units corresponding to the placing stations, each soft pressure testing unit comprises an air pipe, the upper end of each air pipe is communicated to the air pump equipment, and the lower end of each air pipe is provided with a flexible rubber nozzle; the air pump device sucks or blows air into the air pipe;
the jig upper die is connected with the driving device, and the driving device drives the jig upper die to move up and down;
when the upper jig die moves downwards to be close to the lower jig die, the opening at the lower end of the flexible rubber nozzle is pressed on a workpiece to be tested;
the control device is connected with the air pump equipment and the driving device.
2. The testing device of claim 1, further comprising a base and a testing chamber, wherein the working table is arranged at the upper end of the base, and the base is further provided with a plurality of start-stop buttons;
the testing cavity is a space with one open surface and the other closed surface, and the testing jig, the air pump equipment and the driving device are arranged in the testing cavity.
3. A test device as claimed in claim 2, characterized in that the open side of the test chamber is provided on the front side of the test chamber, while the open side is provided with a safety protection device which covers the entire open side.
4. The testing device of claim 2, wherein an air source processing device is further arranged in the testing chamber, the air source processing device comprises a valve, an air pressure controller and a filter, the valve, the air pressure controller and the filter are sequentially connected, and the valve is connected with an external air source.
5. The testing device of claim 4, wherein the tail end of the air source processing device is connected with an air pump device, the air pump device is arranged on the back of the air source processing device and comprises an air path on-off controller and an air pump, the air path on-off controller is connected with the air source processing device, and meanwhile, the air path on-off controller is further connected with the air pump.
6. The testing device of claim 1, wherein the compliant pressure testing unit further comprises an auxiliary pressing bracket, a through hole is formed in the center of the auxiliary pressing bracket, and the compliant pressure testing unit penetrates through the through hole in the center of the auxiliary pressing bracket;
the two sides of the auxiliary pressing support are provided with movable guide posts, the lower ends of the guide posts are fixedly connected with a bottom plate of the auxiliary pressing support, the upper ends of the guide posts penetrate through guide through holes formed in an upper die of the jig, and the auxiliary pressing support is provided with an anti-falling device with the diameter larger than the aperture of the through holes;
the guide post is sleeved with a buffer sleeve, and the buffer sleeve is positioned between the auxiliary pressing support bottom plate and the jig upper die.
7. The testing device of claim 6, wherein the soft pressure testing unit is further connected to an air pressure measuring device, the air pressure measuring device is fixed in the testing chamber, and the number of the air pressure measuring device is the same as that of the soft pressure testing unit.
8. The testing device of claim 1, wherein the driving device comprises an actuator disposed at an upper end of the driving device, and a lower end of the actuator is connected to the upper mold of the fixture;
the jig is characterized by further comprising a guide device arranged below the executing device, and the guide device is connected with the jig upper die.
9. The testing device of claim 1, wherein the control device comprises a parameter setting device, and the parameter setting device is arranged in the middle of the equipment testing device.
10. The testing device of claim 9, wherein the control device further comprises a plurality of switch buttons and data transmission interfaces disposed below the parameter control device, and the plurality of switch buttons and data transmission interfaces are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222014260.7U CN218066929U (en) | 2022-08-01 | 2022-08-01 | Small loudspeaker air tightness testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222014260.7U CN218066929U (en) | 2022-08-01 | 2022-08-01 | Small loudspeaker air tightness testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218066929U true CN218066929U (en) | 2022-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222014260.7U Active CN218066929U (en) | 2022-08-01 | 2022-08-01 | Small loudspeaker air tightness testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218066929U (en) |
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2022
- 2022-08-01 CN CN202222014260.7U patent/CN218066929U/en active Active
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