CN111541983A - Test apparatus and test system - Google Patents
Test apparatus and test system Download PDFInfo
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- CN111541983A CN111541983A CN202010370914.2A CN202010370914A CN111541983A CN 111541983 A CN111541983 A CN 111541983A CN 202010370914 A CN202010370914 A CN 202010370914A CN 111541983 A CN111541983 A CN 111541983A
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- flexible
- electroacoustic device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Abstract
The invention discloses a test device and a test system, wherein the test device comprises: the sound wave generating assembly is provided with a first sound outlet hole; and the flexible conductive piece is jointed with the surface of the sound wave generation assembly and is electrically connected with the sound wave generation assembly, the flexible conductive piece forms a second sound outlet hole, the second sound outlet hole is communicated with the first sound outlet hole, the surface of the sound wave generation assembly deviated from the flexible conductive piece is used for jointing the electroacoustic device, the flexible conductive piece is used for electrically connecting with the electroacoustic device, and the second sound outlet hole is used for being plugged by the electroacoustic device. The technical scheme of the invention aims to ensure that the electroacoustic device receives stable sound signals and ensure the test result.
Description
Technical Field
The invention relates to the technical field of electroacoustic test equipment, in particular to a test device and a test system.
Background
After the electroacoustic device is manufactured, a certain parameter test is usually required, so that the performance condition of the electroacoustic device is verified. In the correlation technique, through directly adopting spot welding or other fixed modes with the electroacoustic device, with electroacoustic device and electroacoustic test equipment electric connection, because electroacoustic test equipment can send the sound signal and test the electroacoustic device, aforementioned connected mode leads to the sound wave transmission effect relatively poor easily to form the sound wave of interference easily, lead to the sound signal unstability that the electroacoustic device received, influence the test result to the electroacoustic device.
The above description is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission of prior art.
Disclosure of Invention
The invention mainly aims to provide a testing device and a testing system, aiming at ensuring that an electroacoustic device receives stable sound signals and ensuring a testing result.
In order to achieve the above object, the present invention provides a testing apparatus for testing an electroacoustic device, the testing apparatus comprising:
the sound wave generating assembly is provided with a first sound outlet hole; and
the flexible conductive piece is attached to the surface of the sound wave generation assembly and electrically connected with the sound wave generation assembly, the flexible conductive piece forms a second sound outlet hole, the second sound outlet hole is communicated with the first sound outlet hole, the surface of the flexible conductive piece, which deviates from the sound wave generation assembly, is used for attaching the electroacoustic device, the flexible conductive piece is used for electrically connecting with the electroacoustic device, and the second sound outlet hole is used for being plugged by the electroacoustic device.
In some embodiments of the present invention, the flexible conductive member includes a flexible substrate and a plurality of conductive particles disposed in the flexible substrate, the plurality of conductive particles form a conductive path, the conductive path is used to electrically connect the acoustic wave generating assembly and the electroacoustic device, the second sound outlet hole penetrates through two opposite surfaces of the flexible substrate, the flexible substrate is attached to the surface of the acoustic wave generating assembly, and the electroacoustic device is attached to the surface of the flexible substrate.
In some embodiments of the present invention, the flexible conductive member is a vertical conductive adhesive tape or a vertical conductive adhesive plate.
In some embodiments of the present invention, the thickness d1 of the flexible conductive member has a value range of: d1 is not less than 0.1mm and not more than 0.2 mm.
In some embodiments of the present invention, the flexible conductive member includes a circuit board and a flexible sealing gasket, the circuit board is attached to the surface of the sound wave generating assembly, the flexible sealing gasket is disposed on a side of the circuit board away from the sound wave generating assembly, and the circuit board is used for electrically connecting the sound wave generating assembly with the electroacoustic device;
the circuit board is provided with a first through hole, the flexible sealing gasket is provided with a second through hole, the first through hole is communicated with the second through hole to jointly form the second sound outlet hole, one side, away from the circuit board, of the flexible sealing gasket is provided with the electroacoustic device, and the second through hole is used for being plugged by the electroacoustic device.
In some embodiments of the present invention, the circuit board forms a mounting sinking platform, a bottom of the mounting sinking platform is communicated with the first through hole, the flexible sealing pad is disposed in the mounting sinking platform, and a surface of the circuit board facing away from the sound wave generating assembly is configured to attach to the electroacoustic device and electrically connect to the electroacoustic device.
In some embodiments of the present invention, the value range of the thickness d2 of the circuit board is: d2 is more than or equal to 0 and less than or equal to 5 mm.
In some embodiments of the present invention, the testing device further includes a sound wave guide tube, and the sound wave guide tube is inserted into the first sound outlet hole and the second sound outlet hole.
In some embodiments of the invention, the acoustic wave generating assembly comprises:
the silencing cavity is provided with a sound outlet;
the loudspeaker is arranged in the sound attenuation cavity, and the sound outlet side of the loudspeaker faces the sound outlet; and
the circuit board, the circuit board laminating set up in amortization chamber outer wall, first sound outlet is located the circuit board, first sound outlet with sound outlet intercommunication, the laminating of flexible conductive piece set up in the circuit board deviates from one side in amortization chamber.
The invention also provides a test system, which comprises a test device and a grounding probe, wherein the test device is used for testing the electroacoustic device, and the test device comprises:
the sound wave generating assembly is provided with a first sound outlet hole; and
the flexible conductive piece is attached to the surface of the sound wave generation assembly and electrically connected with the sound wave generation assembly, the flexible conductive piece forms a second sound outlet hole, the second sound outlet hole is communicated with the first sound outlet hole, the surface of the flexible conductive piece, which deviates from the sound wave generation assembly, is used for attaching the electroacoustic device, the flexible conductive piece is used for electrically connecting with the electroacoustic device, and the second sound outlet hole is used for being plugged by the electroacoustic device.
According to the technical scheme, the flexible conductive piece is arranged on the sound wave generating assembly with the first sound outlet hole, the flexible conductive piece is attached to the surface of the sound wave generating assembly, the second sound outlet hole is communicated with the first sound outlet hole, and when the electroacoustic device needs to be tested, the electroacoustic device is attached to the surface of the flexible conductive piece and is electrically connected with the flexible conductive piece. The sound wave generating component sends out an ultrasonic signal, and the electroacoustic device receives the ultrasonic signal passing through the first sound outlet and the second sound outlet. Because the deformation function of the flexible conductive piece is used for attaching the electroacoustic device to the flexible conductive piece and attaching the sound wave generating assembly to the flexible conductive piece, the connection gap between the devices can be eliminated to a greater extent, and the ultrasonic signals can be stably transmitted. And the electroacoustic device is ensured to receive stable sound signals, and the test result is ensured. Therefore, the technical scheme of the invention can ensure that the electroacoustic device receives stable sound signals and ensure the test result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of a testing device according to the present invention;
FIG. 3 is a schematic diagram of an embodiment of the testing apparatus of the present invention with an acoustic waveguide installed.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
221 | The first through |
| 10 | Sound |
23 | |
| 11 | First sound outlet | 231 | Second through hole |
| 12 | |
30 | |
| 13 | |
200 | |
| 14 | |
201 | |
| 20 | Flexible |
300 | |
| 21 | |
310 | |
| 22 | Probe card |
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present application proposes a testing apparatus 100 for testing an electroacoustic device 200, which aims to ensure that the electroacoustic device 200 receives a stable sound signal and ensure a testing result. The electroacoustic device 200 to be tested may be applied to an electronic device, and it is understood that the electronic device may be, but not limited to, a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), an e-book reader, an MP3 (Moving picture Experts Group Audio Layer III) player, an MP4 (Moving picture Experts Group Audio Layer IV) player, a notebook computer, a car computer, a set-top box, an intelligent tv, a wearable device, a navigator, a handheld game console, etc. The electroacoustic device 200 may be a speaker or a microphone.
The following describes a specific structure of the testing device 100 of the present application in a manner that the acoustic wave generating assembly 10 of the testing device 100 is partially disposed on a horizontal plane:
referring to fig. 1 to 3, in some embodiments of the testing device 100 of the present invention, the testing device 100 includes:
the test apparatus 100 includes:
the sound wave generating assembly 10 is provided with a first sound outlet hole 11, wherein the sound wave generating assembly 10 is provided with a first sound outlet hole; and
the flexible conductive piece 20 is attached to the surface of the sound wave generation assembly 10 and electrically connected to the sound wave generation assembly 10, the flexible conductive piece 20 forms a second sound output hole 21, the second sound output hole 21 is communicated with the first sound output hole 11, the surface of the flexible conductive piece 20 away from the sound wave generation assembly 10 is used for attaching the electroacoustic device 200, the flexible conductive piece 20 is used for electrically connecting to the electroacoustic device 200, and the second sound output hole 21 is used for being blocked by the electroacoustic device 200.
In some embodiments of the present invention, the cross-sectional profiles of the first sound outlet hole 11 and the second sound outlet hole 21 are consistent, so that the ultrasonic signal can be transmitted in the channel with a uniform cross-sectional profile, and the acoustic signal is prevented from being greatly changed after passing through the first sound outlet hole 11 and the second sound outlet hole 21. In an embodiment, the cross-sectional profiles of the first sound outlet and the second sound outlet 21 may be circular, oval or regular polygon, such arrangement may prevent the inner walls of the first sound outlet 11 and the second sound outlet 21 from having sharp wall surfaces, and ensure the propagation of the sound wave signal in the first sound outlet 11 and the second sound outlet 21.
Referring to fig. 1 to 3, it should be noted that the electroacoustic device 200 has a sound hole 201, and when the electroacoustic device 200 is used to block the second sound outlet hole 21, the sound hole 201 of the electroacoustic device 200 is disposed over against the second sound outlet hole 21, so that a sound wave signal can directly enter the electroacoustic device 200 from the sound hole 201 after passing through the second sound outlet hole 21, thereby ensuring a transmission effect of the sound wave signal.
In this embodiment, a flexible conductive member 20 is attached to the surface of the acoustic wave generating assembly 10, and an electroacoustic device 200 is attached to the surface of the flexible conductive member 20. It can be understood that the flexible conductive member 20 has an elastic deformation function, so as to ensure that the connection gap between the flexible conductive member and the sound wave generating assembly 10 and the electroacoustic device 200 is small, thereby ensuring the transmission effect and the test effect of the sound wave signal. The flexible conductive member 20 may have a certain viscosity on its bottom surface to ensure that the flexible conductive member 20 is closely connected to the sound wave generating component. The top surface of flexible conductive member 20 is non-tacky and the electrical connection to the electro-acoustic device 200 is ensured by the probe pressure at 310.
According to the technical scheme, the flexible conductive piece 20 is arranged on the sound wave generating assembly 10 with the first sound outlet hole 11, the flexible conductive piece 20 is attached to the surface of the sound wave generating assembly 10, the second sound outlet hole 21 is communicated with the first sound outlet hole 11, when the electroacoustic device 200 needs to be tested, the electroacoustic device 200 is attached to the surface of the flexible conductive piece 20, and the electroacoustic device 200 is electrically connected with the flexible conductive piece 20. The acoustic wave generating assembly 10 emits an ultrasonic wave signal, and the electroacoustic device 200 receives the ultrasonic wave signal through the first sound emitting hole 11 and the second sound emitting hole 21. Due to the deformation function of the flexible conductive member 20, when the electroacoustic device 200 is attached to the flexible conductive member 20 and the acoustic wave generating assembly 10 is attached to the flexible conductive member 20, the connection gap between the above devices can be eliminated to a greater extent, so that the ultrasonic signal can be stably transmitted. Ensure that the electroacoustic device 200 receives stable sound signals and ensure the test result. Therefore, the technical scheme of the invention can ensure that the electroacoustic device 200 receives stable sound signals and ensure the test result.
In some embodiments of the present invention, the flexible conductive member 20 includes a flexible substrate and a plurality of conductive particles disposed in the flexible substrate, the plurality of conductive particles form a conductive path for electrically connecting the acoustic wave generating assembly 10 and the electroacoustic device 200, the second sound outlet 21 penetrates through two opposite surfaces of the flexible substrate, the flexible substrate is attached to the surface of the acoustic wave generating assembly 10, and the electroacoustic device 200 is attached to the surface of the flexible substrate. In this embodiment, the conductive matrix may include epoxy, acrylate, polyvinyl chloride, rubber material, flexible plastic, and the like. The conductive particles themselves have good conductivity, and the particle size is in a proper range, so that the conductive particles can be added into a conductive matrix to form a conductive path. The conductive filler may be powders of gold, silver, copper, aluminum, zinc, iron, nickel, and graphite and some conductive compounds. So set up for flexible electrically conductive piece 20 is integrated into one piece and sets up, can guarantee on the one hand that it takes place subassembly 10 and electroacoustic device 200's connection with the sound wave, and on the other hand has also avoided the second through-hole inner wall smoothness that its self assembly error arouses, improves the transmission effect of sound wave signal.
Specifically, the flexible conductive member 20 is conductive adhesive. The conductive adhesive is an adhesive which has certain conductivity after being cured or dried. It can connect multiple conductive materials together to form an electrical path between the connected materials. Specifically, the Conductive paste belongs to a vertical Conductive paste or a vertical Conductive adhesive tape or a vertical Conductive paste plate, i.e., an Anisotropic Conductive paste (ACAs), which means that the Conductive paste has conductivity in a direction perpendicular to the application direction (z direction), i.e., a longitudinal direction, but has electrical insulation in the application direction (x & y directions), i.e., a transverse direction. The conductive particles are used to connect the electrodes between the electroacoustic device 200 and the acoustic wave generating component 10 to make them conductive, and at the same time, the conductive short circuit between two adjacent electrodes can be avoided, so as to achieve the purpose of conduction only in the Z-axis direction. The conductive adhesive is thin, so that the transmission channel length of the ultrasonic signal is shortened to a large extent, the reflection probability of the sound wave signal is reduced, the waveform of a normal ultrasonic test is protected, the electroacoustic device 200 is ensured to receive stable sound signals, and the test result is ensured. It is understood that the conductive adhesive in this embodiment is substantially annular, and the second sound outlet hole 21 is a hollow portion of the conductive adhesive.
Further, the thickness d1 of the flexible conductive member 20 has a value range as follows: d1 is not less than 0.1mm and not more than 0.2 mm. When the thickness of the conductive adhesive is less than 0.1mm, the adhesive effect is easily reduced, thereby reducing the connection effect and connection stability of the conductive adhesive with the sound wave generating assembly 10 and the electroacoustic device 200. When the thickness of the conductive adhesive is larger than 0.2mm, the thickness of the conductive adhesive is larger, although better bonding can be realized, the channel length of ultrasonic signal transmission is increased, and the test cost is increased. When the thickness value range of conductive adhesive is 0.1mm to 0.2mm, on one hand, the conductive adhesive and the sound wave generation assembly 10 and the electroacoustic device 200 can be connected well, on the other hand, the test cost can be controlled well, and due to the fact that the thickness of the conductive adhesive is thin, the transmission channel length of ultrasonic signals is shortened to a large extent, the reflection probability of the sound wave signals is reduced, the waveform of normal ultrasonic testing is protected, the electroacoustic device 200 is guaranteed to receive stable sound signals, and the test result is guaranteed. It can be understood that the thickness of the conductive adhesive may also be 0.13mm, 0.15mm, 0.17mm, 0.19mm, and the like, which may make the connection effect and connection stability of the conductive adhesive with the acoustic wave generating assembly 10 and the electroacoustic device 200 better on the one hand, and may also better control the test cost on the other hand.
Referring to fig. 2 and 3, in some embodiments of the present invention, the flexible conductive member 20 includes a probe card 22 and a flexible sealing pad 23, the probe card 22 is attached to a surface of the acoustic wave generating assembly 10, the flexible sealing pad 23 is disposed on a side of the probe card 22 facing away from the acoustic wave generating assembly 10, the electroacoustic device 200 is disposed on a side of the flexible sealing pad 23 facing away from the probe card 22, and the probe card 22 is used for electrically connecting the acoustic wave generating assembly 10 and the electroacoustic device 200; the probe card 22 is formed with a first through hole 221, the flexible gasket 23 is formed with a second through hole 231, and the first through hole 221 and the second through hole 231 are communicated with each other to form the second sound outlet hole 21. Since the electroacoustic device 200 is disassembled (i.e. in a manner similar to hot plugging) after the test of the electroacoustic device 200 is completed, a place where a gap is generated in an acoustic channel is mainly between the probe card 22 and the electroacoustic device 200, in this embodiment, the probe card 22 is arranged to electrically connect the acoustic wave generating assembly 10 and the electroacoustic device 200, and the gap between the probe card 22 and the electroacoustic device 200 is further sealed by the flexible sealing gasket 23. The gap of the part is largely eliminated, so that the ultrasonic signal can be stably transmitted. Ensure that the electroacoustic device 200 receives stable sound signals and ensure the test result.
In this embodiment, the second sound outlet hole 21 is formed by the first through hole 221 and the second through hole 231, and it can be understood that, in order to improve the smoothness of the hole wall of the second sound outlet hole 21 and ensure the connection effect of the probe card 22 and the flexible sealing gasket 23, a positioning structure may be disposed on both the probe card 22 and/or the flexible sealing gasket 23 to ensure the accurate assembly of the two, ensure the smoothness of the hole wall of the second sound outlet hole 21, and ensure the transmission effect of the sound wave signal. Specifically, the first through hole 221 and the second through hole 231 can be accurately connected by arranging the positioning column and the positioning hole structure and matching the hole columns. It will be appreciated that the flexible sealing gasket 23 is substantially annular and the second through hole 231 is a hollow portion of the flexible sealing member.
Referring to fig. 2 and 3, in some embodiments of the present invention, the probe card 22 forms a mounting pad, the bottom of the mounting pad is communicated with the first through hole 221, the flexible sealing pad 23 is disposed in the mounting pad, and the surface of the probe card 22 facing away from the acoustic wave generating assembly 10 is used for adhering to the electroacoustic device 200 and electrically connecting to the electroacoustic device 200. In this embodiment, the flexible sealing gasket 23 is installed by arranging the installation sinking platform, so that the installation volumes of the probe card 22 and the flexible sealing member are reduced, the first through hole 221 and the second through hole 231 are well positioned, the connection effect of the first through hole and the second through hole is ensured, the hole wall smoothness of the second sound outlet hole 21 is improved, and the transmission effect of the sound wave signal is ensured.
In some embodiments of the present invention, the thickness d2 of the probe card 22 has a value in the range of: d2 is more than or equal to 0 and less than or equal to 5 mm. When the thickness of the probe card 22 is greater than 5mm, the depth of the second sound outlet hole 21 is too deep, and further the length of the transmission channel of the sound wave signal is too long, the sound signal is seriously reflected when passing through the transmission channel, and the reflected sound wave interferes with the normal test sound wave, so that the sound signal received by the electroacoustic device 200 is unstable. When the thickness of the probe card 22 is less than or equal to 5mm, the depth of the second sound outlet hole 21 can be reduced to a certain extent, the length of a transmission channel of the sound wave signal is reduced, reflection of the sound wave signal during transmission is reduced, and the test effect is improved. It can be understood that the thickness of the probe card 22 can be 1mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, etc., and the depth of the second sound emitting hole 21 can be reduced to some extent, so as to reduce the length of the transmission channel of the acoustic wave signal, and further reduce the reflection of the acoustic wave signal during propagation, thereby improving the testing effect.
In an embodiment, the flexible sealing pad 23 may be made of rubber (natural rubber or synthetic rubber is selected as the rubber) which is a completely amorphous polymer, and is elastic at room temperature, and can generate large deformation under the action of small external force, and can recover to its original shape after the external force is removed, so as to well seal the gap between the probe card 22 and the electroacoustic device 200. Or the flexible sealing pad 23 may be made of a silicone member (organic silicone or inorganic silicone may be selected), which has good chemical stability and flexibility, and can also well block the gap between the probe card 22 and the electroacoustic device 200.
Referring to fig. 3, in some embodiments of the present invention, the testing device 100 further includes a sound waveguide 30, and the sound waveguide 30 is inserted into the first sound outlet 11 and the second sound outlet 21. In this embodiment, the sound wave guide tube 30 is communicated with the sound outlet and the electroacoustic device 200, so that the sound wave signal passing through the sound outlet is directly transmitted to the electroacoustic device 200, the transmission stability of the sound wave signal is ensured to the greatest extent, and the electroacoustic device 200 is ensured to receive the sound wave signal.
Referring to fig. 1-3, in some embodiments of the present invention, the acoustic wave generating assembly 10 comprises:
the silencing cavity 12 is provided with a sound outlet;
a loudspeaker 13, wherein the loudspeaker 13 is arranged in the sound-deadening cavity 12, and the sound outlet side of the loudspeaker 13 is arranged towards the sound outlet; and
the circuit board 14, the circuit board 14 laminating set up in the outer wall of noise elimination chamber 12, first sound outlet 11 is located the circuit board 14, first sound outlet 11 with sound outlet intercommunication, flexible conductive piece 20 laminating set up in the circuit board 14 deviates from one side of noise elimination chamber 12.
When needs test, speaker 13 sends sound wave signal, and sound wave signal propagates to a sound outlet from amortization chamber 12, and then propagates to first sound outlet 11, gets into second sound outlet 21 from first sound outlet 11 again, and it can be understood that the inside in amortization chamber 12 can set up sound absorbing material for sound wave signal can get into a sound outlet from speaker 13 better, improves the test effect. It will be appreciated that the sound outlet corresponds to the cross-sectional profile of the first sound outlet 11, so that a good transmission of the acoustic signal in the transmission channel is ensured.
The present invention further provides a test system 300, wherein the test system 300 comprises the test apparatus 100 of any one of the above and a ground probe 310, and the test apparatus 100 comprises: the sound wave generating assembly 10 is provided with a first sound outlet hole 11, wherein the sound wave generating assembly 10 is provided with a first sound outlet hole; and a flexible conductive member 20, the flexible conductive member 20 is attached to the surface of the sound wave generating assembly 10 and electrically connected to the sound wave generating assembly 10, the flexible conductive member 20 forms a second sound outlet hole 21, the second sound outlet hole 21 is communicated with the first sound outlet hole 11, the surface of the flexible conductive member 20 away from the sound wave generating assembly 10 is used for attaching the electroacoustic device 200, the flexible conductive member 20 is used for electrically connecting to the electroacoustic device 200, and the second sound outlet hole 21 is used for being blocked by the electroacoustic device 200. By providing the ground probe 310, the circuit of the electroacoustic device 200 can be protected, and the stability of the test can be improved. Since the test system 300 adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and are not described in detail herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A test apparatus for testing an electroacoustic device, the test apparatus comprising:
the sound wave generating assembly is provided with a first sound outlet hole; and
the flexible conductive piece is attached to the surface of the sound wave generation assembly and electrically connected with the sound wave generation assembly, the flexible conductive piece forms a second sound outlet hole, the second sound outlet hole is communicated with the first sound outlet hole, the surface of the flexible conductive piece, which deviates from the sound wave generation assembly, is used for attaching the electroacoustic device, the flexible conductive piece is used for electrically connecting with the electroacoustic device, and the second sound outlet hole is used for being plugged by the electroacoustic device.
2. The testing device as claimed in claim 1, wherein the flexible conductive member includes a flexible substrate and a plurality of conductive particles disposed in the flexible substrate, the plurality of conductive particles form a conductive path for electrically connecting the sound wave generating assembly and the electroacoustic device, the second sound outlet hole penetrates through two opposite surfaces of the flexible substrate, the flexible substrate is attached to a surface of the sound wave generating assembly, and the electroacoustic device is attached to a surface of the flexible substrate.
3. The testing device of claim 2, wherein the flexible conductive member is a vertical conductive gel strip or a vertical conductive gel plate.
4. The testing device of claim 3, wherein the thickness d1 of the flexible conductive member has a value in a range of: d1 is not less than 0.1mm and not more than 0.2 mm.
5. The testing device of claim 1, wherein the flexible conductive member comprises a probe circuit board and a flexible sealing gasket, the circuit board is attached to the surface of the sound wave generating assembly, the flexible sealing gasket is arranged on the side of the circuit board away from the sound wave generating assembly, and the circuit board is used for electrically connecting the sound wave generating assembly with the electroacoustic device;
the circuit board is provided with a first through hole, the flexible sealing gasket is provided with a second through hole, the first through hole is communicated with the second through hole to jointly form the second sound outlet hole, one side, away from the circuit board, of the flexible sealing gasket is provided with the electroacoustic device, and the second through hole is used for being plugged by the electroacoustic device.
6. The testing apparatus as claimed in claim 5, wherein the circuit board forms a mounting pad, a bottom of the mounting pad is in communication with the first through hole, the flexible gasket is disposed in the mounting pad, and a surface of the probe card facing away from the acoustic wave generating assembly is configured to attach to and electrically connect to the electroacoustic device.
7. The testing device of claim 6, wherein the thickness d2 of the circuit board has a value range of: d2 is more than or equal to 0 and less than or equal to 5 mm.
8. The testing device of any one of claims 1-6, further comprising a sonic tube that is plugged into the first sound outlet port and the second sound outlet port.
9. The testing device of any one of claims 1-6, wherein the acoustic wave generating assembly comprises:
the silencing cavity is provided with a sound outlet;
the loudspeaker is arranged in the sound attenuation cavity, and the sound outlet side of the loudspeaker faces the sound outlet; and
the circuit board, the circuit board laminating set up in amortization chamber outer wall, first sound outlet is located the circuit board, first sound outlet with sound outlet intercommunication, the laminating of flexible conductive piece set up in the circuit board deviates from one side in amortization chamber.
10. A test system comprising a test apparatus according to any one of claims 1 to 9 for testing an electroacoustic device and a ground probe electrically connected to the electroacoustic device.
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| CN202010370914.2A CN111541983B (en) | 2020-04-30 | 2020-04-30 | Test apparatus and test system |
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| CN111541983B CN111541983B (en) | 2022-01-07 |
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Address after: No.1 Xingye Road, Rongcheng City, Weihai City, Shandong Province Patentee after: Rongcheng gol Microelectronics Co.,Ltd. Address before: No.1 Xingye Road, Rongcheng City, Weihai City, Shandong Province Patentee before: Rongcheng gol Electronic Technology Co.,Ltd. |