A micro-speaker test tool

Abstract

The utility model discloses a kind of miniature loudspeaker test tool, including support seat and pressing plate, support seat is used to carry miniature loudspeaker, support seat is equipped with support column, support column is used to butt against the screw hole bottom of miniature loudspeaker;Pressing plate is located above support seat, and pressing plate is equipped with pressure contact protrusion, and pressure contact protrusion is used to butt against the screw hole top of miniature loudspeaker.The miniature loudspeaker test tool provided by the utility model is butted against the screw hole bottom and top of miniature loudspeaker from upper and lower ends by support column and pressure contact protrusion, simulates the assembly pressure that miniature loudspeaker is installed and fixed in whole machine through screw hole, overcome the defect that existing test tool cannot simulate whole machine working environment, make testing condition more close to actual use state, to improve the accuracy of test data.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a testing fixture for a miniature loudspeaker. Background Technology

[0002] As a core component for sound output in portable electronic devices, the performance of miniature speakers directly impacts user experience. During the research and development and production phases, comprehensive testing of the airtightness, acoustic performance, and sound quality of miniature speakers is necessary. Existing testing fixtures typically only provide basic fixing functions, making it difficult to simulate the actual stress conditions of miniature speakers being installed and fixed in the device via screw holes. This results in discrepancies between the testing environment and the actual usage environment, affecting the accuracy of the test results. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a micro loudspeaker test fixture that can accurately simulate the real pressure state of a micro loudspeaker fixed in the whole machine through screw holes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a miniature loudspeaker testing fixture, comprising... A support base for supporting a miniature speaker, the support base having a support column for abutting against the bottom of the screw hole of the miniature speaker; A pressure plate is provided above the support base. The pressure plate has a pressing protrusion, which is used to abut against the top of the screw hole of the miniature speaker.

[0005] Furthermore, the crimping protrusion is provided with a sleeve protrusion and an annular pressure pad. The cross-sectional diameter of the sleeve protrusion is smaller than the diameter of the screw hole. The annular pressure pad is sleeved on the outside of the sleeve protrusion and is used to abut against the top of the screw hole of the miniature speaker.

[0006] Furthermore, the sleeve protrusion is detachably connected to the crimping protrusion.

[0007] Furthermore, one end of the pressure plate is hinged to the support base, and the other end is provided with a locking structure, which is used to connect with the support base.

[0008] Furthermore, the locking structure includes a first magnetic attracting member and a second magnetic attracting member that magnetically engage, the first magnetic attracting member being disposed on the pressure plate and the second magnetic attracting member being disposed on the support base.

[0009] Furthermore, it also includes a mounting plate for connecting the test equipment, the support base being disposed on the mounting plate, the mounting plate having a test hole aligned with the sound outlet of the miniature speaker.

[0010] Furthermore, the test hole is provided with a shaped block, and the shaped block is provided with a sound outlet channel.

[0011] Furthermore, the molding block can be detachably installed in the test hole.

[0012] Furthermore, the crimping protrusion is equipped with a pressure sensor, which is used to abut against the top of the screw hole of the miniature speaker.

[0013] Furthermore, the pressure sensor is a piezoelectric ceramic.

[0014] The beneficial effects of this utility model are as follows: The miniature speaker testing fixture provided by this utility model uses a support column and a pressing protrusion to abut against the bottom and top of the screw hole of the miniature speaker from the upper and lower ends respectively, simulating the assembly pressure that the miniature speaker is subjected to when it is installed and fixed in the whole machine through the screw hole. This overcomes the defect that the existing testing fixture cannot simulate the working environment of the whole machine, making the test conditions closer to the actual use state, thereby improving the accuracy of the test data. Attached Figure Description

[0015] Figure 1 This is an assembly drawing of the miniature loudspeaker testing fixture according to Embodiment 1 of this utility model; Figure 2 This is an exploded view of the miniature loudspeaker testing fixture according to Embodiment 1 of this utility model; Figure 3 This is a schematic cross-sectional view of the miniature loudspeaker testing fixture according to Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the pressure plate in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the miniature loudspeaker testing fixture according to Embodiment 2 of this utility model.

[0016] Label Explanation: 1. Support base; 11. Support column; 2. Pressure plate; 21. Pressing protrusion; 22. Annular pressure pad; 23. Sleeve protrusion; 3. Miniature speaker; 31. Screw hole; 4. Mounting plate; 41. Test hole; 42. Molding block; 43. Sound outlet channel; 5. Locking structure; 51. First magnetic suction component; 52. Second magnetic suction component; 6. Pressure sensor. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figure 1 , Figure 2 and Figure 3A miniature loudspeaker testing fixture includes a support base 1 and a pressure plate 2. The support base 1 is used to support a miniature loudspeaker 3. The support base 1 is provided with a support column 11, which is used to abut the bottom of the screw hole 31 of the miniature loudspeaker 3. The pressure plate 2 is located above the support base 1. The pressure plate 2 is provided with a pressing protrusion 21, which is used to abut the top of the screw hole 31 of the miniature loudspeaker 3.

[0019] The working principle of this utility model is briefly described as follows: The miniature speaker 3 is placed on the support base 1, and the support column 11 abuts against the bottom of the screw hole 31 of the miniature speaker 3; the pressure plate 2 is located above the support base 1 and applies downward pressure, so that the pressing protrusion 21 abuts against the top of the screw hole 31 of the miniature speaker 3. Thus, the opposing contact force formed by the support column 11 and the pressing protrusion 21 against the upper and lower ends of the screw hole 31 simulates the assembly pressure that the miniature speaker 3 is subjected to when it is installed and fixed in the whole machine through the screw hole 31. Various performance tests are carried out under this pressure constraint.

[0020] As can be seen from the above description, the beneficial effect of this utility model is that: by having the support column 11 and the pressing protrusion 21 abut against the screw hole 31 of the miniature speaker 3 from the upper and lower ends, the force state of the miniature speaker 3 when it is installed in the whole machine through the screw hole 31 is simulated, thereby realizing the performance test of the miniature speaker 3 under the assembly pressure environment of the whole machine.

[0021] Please refer to Figure 3 and Figure 4 Furthermore, the crimping protrusion 21 is provided with a sleeve protrusion 23 and an annular pressure pad 22. The cross-sectional diameter of the sleeve protrusion 23 is smaller than the diameter of the screw hole 31. The annular pressure pad 22 is sleeved on the outside of the sleeve protrusion 23 and is used to abut against the top of the screw hole 31 of the miniature speaker 3.

[0022] As described above, the pressing protrusion 21 is provided with a sleeve protrusion 23 and an annular pressure pad 22. The cross-sectional diameter of the sleeve protrusion 23 is smaller than the diameter of the screw hole 31, so that the sleeve protrusion 23 can extend into the screw hole 31 to play a positioning role. The annular pressure pad 22 is sleeved on the outside of the sleeve protrusion 23 and abuts against the top of the screw hole 31, thereby achieving annular surface contact pressure on the top of the screw hole 31, improving the uniformity of pressure distribution and avoiding damage to the screw hole 31.

[0023] Furthermore, the sleeve protrusion 23 is detachably connected to the crimping protrusion 21.

[0024] As described above, the detachable connection between the socket protrusion 23 and the crimping protrusion 21 allows the corresponding socket protrusion 23 to be replaced according to the screw hole 31 size of different specifications of miniature speakers 3, thereby improving the versatility and adaptability of the test fixture.

[0025] Please refer to Figure 3 Furthermore, one end of the pressure plate 2 is hinged to the support base 1, and the other end is provided with a locking structure 5, which is used to connect with the support base 1.

[0026] As described above, one end of the pressure plate 2 is hinged to the support base 1, allowing the pressure plate 2 to rotate and open relative to the support base 1. The locking structure 5 at the other end is used to connect with the support base 1 to achieve quick locking and unlocking of the pressure plate 2, thereby improving the convenience of picking up and putting down the miniature speaker 3 and the testing efficiency.

[0027] Furthermore, the locking structure 5 includes a first magnetic suction member 51 and a second magnetic suction member 52 that magnetically engage. The first magnetic suction member 51 is disposed on the pressure plate 2, and the second magnetic suction member 52 is disposed on the support base 1.

[0028] As can be seen from the above description, the locking structure 5 adopts the magnetic attraction between the first magnetic member 51 and the second magnetic member 52. The magnetic attraction between the first magnetic member 51 and the second magnetic member 52 achieves quick locking between the pressure plate 2 and the support base 1, without the need for tool operation and with a stable and reliable locking state.

[0029] Please refer to Figure 1 and Figure 2 Furthermore, it also includes a mounting plate 4 for connecting the test equipment, the support base 1 is disposed on the mounting plate 4, the mounting plate 4 is provided with a test hole 41, and the test hole 41 is aligned with the sound outlet of the miniature speaker 3.

[0030] As described above, the mounting plate 4 is used to connect the test equipment so that the test fixture can be integrated with the external test equipment. The support base 1 is provided on the mounting plate 4 to provide stable support. The test hole 41 of the mounting plate 4 is aligned with the sound outlet hole of the miniature speaker 3 to ensure that the sound signal can be transmitted to the external test equipment without obstruction, so as to achieve accurate testing of acoustic performance.

[0031] Furthermore, the test hole 41 is provided with a shaping block 42, and the shaping block 42 is provided with a sound outlet channel 43.

[0032] As described above, the test hole 41 is equipped with a shaped block 42, which has a sound outlet channel 43. The sound emitted by the miniature speaker 3 is guided through the sound outlet channel 43 of the shaped block 42 to simulate the sound propagation path in the whole machine, thereby improving the authenticity and accuracy of the acoustic test.

[0033] Furthermore, the molding block 42 can be detachably installed in the test hole 41.

[0034] As described above, the sculpted block 42 can be detachably installed in the test hole 41, allowing for the replacement of sculpted blocks 42 with different sound output channels 43 specifications according to different test requirements or different models of miniature loudspeakers 3, thereby enhancing the versatility and maintainability of the test fixture.

[0035] Please refer to Figure 5 Furthermore, the crimping protrusion 21 is provided with a pressure sensor 6, which is used to abut against the top of the screw hole 31 of the miniature speaker 3.

[0036] As described above, the crimping protrusion 21 is equipped with a pressure sensor 6, which is used to abut against the top of the screw hole 31 of the miniature speaker 3 to monitor the pressure applied to the top of the screw hole 31 in real time during the test, ensuring the accuracy and repeatability of the pressure simulation.

[0037] Furthermore, the pressure sensor 6 is a piezoelectric ceramic.

[0038] As described above, the pressure sensor 6 uses piezoelectric ceramics, which utilize the piezoelectric effect to convert mechanical pressure into electrical signals, thereby achieving high-precision detection and feedback of the pressure at the top of the screw hole 31.

[0039] Embodiment 1 of this utility model is as follows: Please refer to Figure 1 A miniature loudspeaker testing fixture is applicable to testing scenarios such as airtightness, acoustic performance, and sound effect of miniature loudspeakers during the research and development and production stages. By simulating the assembly pressure environment when a miniature loudspeaker is installed and fixed in a smartphone or mobile device through screw holes, the testing conditions are closer to the actual use state, thereby obtaining more accurate test data. It is particularly suitable for performance evaluation and quality inspection of miniature loudspeakers with high requirements for testing accuracy and reliability.

[0040] For specific details, please refer to... Figure 2 and Figure 3The miniature loudspeaker testing fixture includes a support base 1 and a pressure plate 2. The support base 1 is used to support the miniature loudspeaker 3. The support base 1 is provided with a support column 11, which is used to abut the bottom of the screw hole 31 of the miniature loudspeaker 3. The pressure plate 2 is located above the support base 1. The pressure plate 2 is provided with pressing protrusions 21. The number of pressing protrusions 21 is the same as the number of screw holes 31 of the miniature loudspeaker 3 and the distribution position is also the same. The pressing protrusions 21 are used to abut the top of the screw hole 31 of the miniature loudspeaker 3. In actual operation, the miniature speaker 3 is placed on the support base 1, and the support column 11 abuts against the bottom of the screw hole 31 of the miniature speaker 3. The pressure plate 2 is located above the support base 1 and applies downward pressure, so that the pressing protrusion 21 abuts against the top of the screw hole 31 of the miniature speaker 3. Thus, the opposing force formed by the support column 11 and the pressing protrusion 21 against the upper and lower ends of the screw hole 31 simulates the assembly pressure that the miniature speaker 3 is subjected to when it is installed and fixed in the whole machine through the screw hole 31. Various performance tests are carried out under this pressure constraint.

[0041] It should be noted that the pressure plate 2 of this utility model can be pressurized manually, pneumatically, or electrically. The core innovation of this utility model lies in simulating the stress state of the entire machine through the precise contact between the support column 11 and the pressing protrusion 21 against both ends of the screw hole 31, rather than the pressure source itself. Any pressure-applying mechanism capable of driving the pressure plate 2 to move towards the support base 1 is applicable.

[0042] It should be noted that when the pressure plate 2 is applied manually, a fastening bolt can be installed on the pressure plate 2. The fastening bolt is threadedly connected to the support seat 1. By manually tightening the fastening bolt, the threaded pair is converted into downward pressure on the pressure plate 2, which can be precisely controlled by a torque wrench.

[0043] Please refer to Figure 3 and Figure 4 In this embodiment, the pressing protrusion 21 is provided with a sleeve protrusion 23 and an annular pressure pad 22. The cross-sectional diameter of the sleeve protrusion 23 is smaller than the diameter of the screw hole 31. The annular pressure pad 22 is sleeved on the outside of the sleeve protrusion 23 and is used to abut against the top of the screw hole 31 of the miniature speaker 3. It can be understood that the pressing protrusion 21 is provided with a sleeve protrusion 23 and an annular pressure pad 22. The cross-sectional diameter of the sleeve protrusion 23 is smaller than the diameter of the screw hole 31 so that the sleeve protrusion 23 can extend into the screw hole 31 to play a positioning role. The annular pressure pad 22 is sleeved on the outside of the sleeve protrusion 23 and abuts against the top of the screw hole 31 to achieve annular surface contact pressure on the top of the screw hole 31, improve the uniformity of pressure distribution and avoid damage to the screw hole 31. Specifically, the sleeve protrusion 23 and the pressing protrusion 21 are integrally formed structures.

[0044] Of course, in other embodiments, the socket protrusion 23 can also be detachably connected to the crimping protrusion 21. The detachable connection of the socket protrusion 23 to the crimping protrusion 21 allows for the replacement of the corresponding socket protrusion 23 according to the screw hole 31 size of different specifications of the miniature speaker 3, improving the versatility and adaptability of the testing fixture. The detachable connection methods include, but are not limited to, threaded connections, magnetic connections, snap-fit ​​connections, and pin connections, etc., which can be specifically set according to actual application requirements and will not be elaborated here.

[0045] Please refer to Figure 3 One end of the pressure plate 2 is hinged to the support base 1, and the other end is provided with a locking structure 5. The locking structure 5 is used to connect with the support base 1. The hinge of one end of the pressure plate 2 to the support base 1 allows the pressure plate 2 to rotate and open relative to the support base 1. The locking structure 5 at the other end is used to connect with the support base 1 to realize the quick locking and unlocking of the pressure plate 2, thereby improving the convenience of the micro speaker 3 in taking it out and putting it in, and the testing efficiency.

[0046] Specifically, in this embodiment, the locking structure 5 includes a first magnetic attracting member 51 and a second magnetic attracting member 52 that magnetically engage. The first magnetic attracting member 51 is disposed on the pressure plate 2, and the second magnetic attracting member 52 is disposed on the support base 1. It can be understood that the locking structure 5 adopts the magnetic attraction between the first magnetic attracting member 51 and the second magnetic attracting member 52 to achieve quick locking between the pressure plate 2 and the support base 1 through the magnetic attraction between the first magnetic attracting member 51 and the second magnetic attracting member 52. No tools are required and the locking state is stable and reliable. In addition, in some other embodiments, the locking structure 5 can also be a bolt, screw, locking pin, or other structure.

[0047] Please refer to Figure 1 and Figure 2 The miniature loudspeaker testing fixture also includes a mounting plate 4 for connecting testing equipment. The support base 1 is disposed on the mounting plate 4, and the mounting plate 4 has a test hole 41. The test hole 41 is aligned with the sound outlet of the miniature loudspeaker 3, thus enabling the testing fixture to be integrated with external testing equipment. The support base 1 on the mounting plate 4 provides stable support, and the alignment of the test hole 41 on the mounting plate 4 with the sound outlet of the miniature loudspeaker 3 ensures that the sound signal can be transmitted to the external testing equipment without obstruction, achieving accurate acoustic performance testing. Specifically, the test hole 41 is provided with a shaped block 42, and the shaped block 42 is provided with a sound outlet channel 43. The structure of the sound outlet channel 43 is consistent with the structure of the sound outlet channel 43 of the whole machine. The sound emitted by the miniature loudspeaker 3 is guided directionally through the sound outlet channel 43 of the shaped block 42, simulating the sound propagation path in the whole machine, improving the realism and accuracy of acoustic testing.

[0048] Specifically, in this embodiment, the molding block 42 is detachably installed on the test hole 41. In this way, molding blocks 42 with different sound output channel 43 specifications can be replaced according to different test requirements or different models of miniature speakers 3, thereby enhancing the versatility and maintainability of the test fixture.

[0049] Please refer to Figure 5 The second embodiment of this utility model is a further improvement on the first embodiment. In this embodiment, the crimping protrusion 21 is provided with a pressure sensor 6. The pressure sensor 6 is used to abut against the top of the screw hole 31 of the miniature speaker 3. It can be understood that the crimping protrusion 21 is provided with a pressure sensor 6, which is used to abut against the top of the screw hole 31 of the miniature speaker 3, so as to monitor the pressure applied to the top of the screw hole 31 in real time during the test, and ensure the accuracy and repeatability of the pressure simulation.

[0050] Specifically, in this embodiment, the pressure sensor 6 is a piezoelectric ceramic. By utilizing the piezoelectric effect of the piezoelectric ceramic, mechanical pressure is converted into an electrical signal, which can achieve high-precision detection and feedback of the pressure at the top of the screw hole 31.

[0051] In other embodiments, the pressure sensor 6 may also be a resistance strain gauge sensor, a capacitive miniature pressure sensor 6, or a piezoresistive sensor.

[0052] In summary, the miniature loudspeaker testing fixture provided by this utility model uses support columns and pressing protrusions to abut against the bottom and top of the screw holes of the miniature loudspeaker from the upper and lower ends respectively, simulating the assembly pressure experienced by the miniature loudspeaker when it is installed and fixed in the whole machine through the screw holes. This overcomes the defect of existing testing fixtures that cannot simulate the working environment of the whole machine, making the test conditions closer to the actual use state, thereby improving the accuracy of test data.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A miniature loudspeaker testing fixture, characterized in that, include A support base for supporting a miniature speaker, the support base having a support column for abutting against the bottom of the screw hole of the miniature speaker; A pressure plate is provided above the support base. The pressure plate has a pressing protrusion, which is used to abut against the top of the screw hole of the miniature speaker.

2. The miniature loudspeaker testing fixture according to claim 1, characterized in that, The crimping protrusion has a sleeve protrusion and an annular pressure pad. The cross-sectional diameter of the sleeve protrusion is smaller than the diameter of the screw hole. The annular pressure pad is sleeved on the outside of the sleeve protrusion and is used to abut against the top of the screw hole of the miniature speaker.

3. The miniature loudspeaker testing fixture according to claim 2, characterized in that, The sleeve protrusion is detachably connected to the crimping protrusion.

4. The miniature loudspeaker testing fixture according to claim 1, characterized in that, One end of the pressure plate is hinged to the support base, and the other end is provided with a locking structure, which is used to connect with the support base.

5. The miniature loudspeaker testing fixture according to claim 4, characterized in that, The locking structure includes a first magnetic attractor and a second magnetic attractor that magnetically engage. The first magnetic attractor is disposed on the pressure plate, and the second magnetic attractor is disposed on the support base.

6. The miniature loudspeaker testing fixture according to claim 1, characterized in that, It also includes a mounting plate for connecting test equipment, the support base being disposed on the mounting plate, the mounting plate having a test hole aligned with the sound outlet of the miniature speaker.

7. The miniature loudspeaker testing fixture according to claim 6, characterized in that, The test hole is provided with a shaped block, and the shaped block is provided with a sound outlet channel.

8. The miniature loudspeaker testing fixture according to claim 7, characterized in that, The shaped block can be detachably installed in the test hole.

9. The miniature loudspeaker testing fixture according to claim 1, characterized in that, The crimping protrusion is equipped with a pressure sensor, which is used to abut against the top of the screw hole of the miniature speaker.

10. The miniature loudspeaker testing fixture according to claim 9, characterized in that, The pressure sensor is a piezoelectric ceramic.

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