Loudspeaker test tool

Abstract

The utility model discloses a loudspeaker test tool, which comprises a tool main body, a cover plate and a volume block, the tool main body is provided with a positioning groove for accommodating a loudspeaker, and the tool main body is also provided with a test hole communicated with the positioning groove; the cover plate is movably arranged on the positioning groove in a covering manner; and the volume block is arranged in the positioning groove. According to the loudspeaker test tool, the positioning groove is used for placing the loudspeaker to be tested, the test hole is arranged corresponding to the sound production part of the loudspeaker to be tested, and after the cover plate covers the positioning groove, an operator can utilize acoustic test equipment to collect audio signals generated by the loudspeaker at the test hole. Wherein the positioning groove simulates the rear cavity of the loudspeaker module in the testing process, and the volume blocks with the corresponding number or shape are arranged in the positioning groove, so that the rear cavities of the loudspeaker modules with different models can be simulated, and the performance parameters of the loudspeaker in the different rear cavities can be tested, and therefore, the applicability of the loudspeaker testing tool is improved, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker testing, in particular to a loudspeaker testing tool. Background Art

[0002] With the development of smart devices, consumers have higher requirements for the performance of micro speakers installed in smart devices. Therefore, during the research and development stage of micro speakers, factors affecting acoustic performance must be strictly controlled. The size of the back cavity of a micro speaker has a great influence on its performance. We need to evaluate the performance parameters of micro speakers under different back cavity volumes. The back cavity structure of existing test fixtures is relatively simple and has low applicability. When testing the impact of different back cavities on the performance of speaker products, it is necessary to customize the corresponding back cavity volume size tooling, which is high in equipment cost. Therefore, it is necessary to design a speaker test fixture that can adjust the volume and shape of the back cavity. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a loudspeaker testing tool capable of adjusting the volume and shape of a rear cavity.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a loudspeaker testing tool, comprising:

[0005] A tool body, wherein the tool body is provided with a positioning groove for accommodating a speaker, and the tool body is also provided with a test hole communicating with the positioning groove;

[0006] a cover plate, the cover plate being movably arranged to cover the positioning groove;

[0007] A volume block is placed in the positioning groove.

[0008] Furthermore, the volume blocks respectively contact the tool body and the cover plate.

[0009] Furthermore, a test probe is provided on the cover.

[0010] Furthermore, a pressure probe is provided on the cover plate.

[0011] Furthermore, a sealing ring is provided between the tool body and the cover plate, and the sealing ring surrounds the positioning groove.

[0012] Furthermore, the tooling body includes a baffle and a positioning seat, the baffle is provided with a first groove, and the positioning seat is provided in the first groove; wherein, a first through hole is opened on the first groove, the positioning groove is provided on the positioning seat, and the first through hole is connected to the test hole.

[0013] Furthermore, the positioning seat includes a base and a positioning block, the base is arranged in the first groove, the base is provided with a second groove, the second groove is provided with the test hole, the positioning block is arranged in the second groove, and the positioning groove is provided on the positioning block.

[0014] Furthermore, a positioning column and a positioning hole cooperating with the positioning column are respectively provided on the contact surface between the base and the positioning block.

[0015] Furthermore, a protrusion is provided on one side of the cover plate close to the positioning groove.

[0016] Furthermore, the tool body is provided with a toggle clamp, which is used to lock the relative position relationship between the cover plate and the tool body.

[0017] The beneficial effects of this utility model are as follows: the positioning slots of the speaker testing tool are used to place the speaker to be tested, and the test holes are arranged corresponding to the sound-emitting part of the speaker to be tested. After the cover plate is placed on the positioning slots, the operator can use acoustic testing equipment to collect the audio signal generated by the speaker at the test holes. The positioning slots simulate the rear cavity of the speaker module during the test process. By placing the corresponding number or shape of volume blocks in the positioning slots, the rear cavity of different speaker modules can be simulated, and the performance parameters of the speaker in different rear cavities can be tested, thereby improving the applicability of the speaker testing tool and reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the loudspeaker testing tooling according to the first embodiment of the present utility model;

[0019] Figure 2 This is a top view of the loudspeaker test fixture of Example 1 of the present utility model (with the elbow clamp and baffle hidden);

[0020] Figure 3 for Figure 2 Middle AA section view;

[0021] Figure 4 for Figure 2 Middle BB section cutaway view;

[0022] Figure 5 This is an exploded view of the loudspeaker testing fixture of the first embodiment of the present invention (with the elbow clamp hidden);

[0023] Figure 6 This is a structural schematic diagram of the cover plate in the loudspeaker testing tooling according to the first embodiment of the present utility model.

[0024] Description of labels:

[0025] 1. Tool body; 11. Baffle; 111. First groove; 112. First through hole; 12. Positioning seat; 121. Base; 1211. Test hole; 1212. Second groove; 1213. Positioning column; 122. Positioning block; 1221. Positioning slot; 1222. Positioning hole;

[0026] 2. Cover plate; 21. Bump; 22. Main board; 221. Pressure relief hole; 23. Pressure plate;

[0027] 3. Volume block;

[0028] 4. Test probe;

[0029] 5. Pressure probe;

[0030] 6. Sealing ring;

[0031] 7. Elbow clamp. DETAILED DESCRIPTION

[0032] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0033] Please refer to Figures 1 to 6 , a loudspeaker testing tool, comprising:

[0034] A tool body 1, wherein the tool body 1 is provided with a positioning groove 1221 for accommodating a speaker, and the tool body 1 is further provided with a test hole 1211 communicating with the positioning groove 1221;

[0035] a cover plate 2, the cover plate 2 being movably disposed on the positioning groove 1221;

[0036] The volume block 3 is placed in the positioning groove 1221 .

[0037] As can be seen from the above description, the beneficial effects of the present invention are as follows: the positioning slot 1221 of the speaker testing tool is used to place the speaker to be tested, and the test hole 1211 is set corresponding to the sound-emitting part of the speaker to be tested. After the cover plate 2 is placed on the positioning slot 1221, the operator can use the acoustic testing equipment to collect the audio signal generated by the speaker at the test hole 1211. The positioning slot 1221 simulates the back cavity of the speaker module during the test process. By placing the corresponding number or shape of volume blocks 3 in the positioning slot 1221, the back cavity of different models of speaker modules can be simulated, and the performance parameters of the speaker in different back cavities can be tested, thereby improving the applicability of the speaker testing tool and reducing equipment costs.

[0038] Furthermore, the volume block 3 respectively contacts the tool body 1 and the cover plate 2 .

[0039] As can be seen from the above description, after the cover plate 2 is placed on the positioning groove 1221 , it can press the volume block 3 to prevent the volume block 3 from moving during the test process, which may cause unstable test results.

[0040] Furthermore, a test probe 4 is provided on the cover plate 2 .

[0041] From the above description, it can be seen that when the cover plate 2 is covered on the positioning groove 1221, the test probe 4 can be in close contact with the electrode of the speaker. At this time, when the operator uses this speaker test tool to perform acoustic performance testing, the operator can control the test probe 4 to transmit electrical signals to the speaker to make the speaker sound.

[0042] Furthermore, a pressure probe 5 is provided on the cover plate 2 .

[0043] It can be seen from the above description that when an operator uses the present loudspeaker testing tool to perform an airtightness test, the pressure probe 5 can detect the pressure borne by the loudspeaker, thereby detecting the airtightness of the loudspeaker.

[0044] Furthermore, a sealing ring 6 is provided between the tool body 1 and the cover plate 2 , and the sealing ring 6 surrounds the positioning groove 1221 .

[0045] As can be seen from the above description, the sealing ring 6 can close the assembly gap between the tool body 1 and the cover plate 2 to prevent air leakage in the assembly gap from causing inaccurate test results.

[0046] Furthermore, the tooling body 1 includes a baffle 11 and a positioning seat 12, the baffle 11 is provided with a first groove 111, and the positioning seat 12 is arranged in the first groove 111; wherein, a first through hole 112 is opened on the first groove 111, the positioning groove 1221 is provided on the positioning seat 12, and the first through hole 112 is connected to the test hole 1211.

[0047] From the above description, it can be seen that the positioning seat 12 is detachably arranged on the first groove 111. The operator can replace the positioning seat 12 according to actual test requirements, so that the speaker test tool can be suitable for different models of speakers, thereby improving the applicability of the speaker test tool.

[0048] Furthermore, the positioning seat 12 includes a base 121 and a positioning block 122, the base 121 is arranged in the first groove 111, the base 121 is provided with a second groove 1212, the second groove 1212 is provided with the test hole 1211, the positioning block 122 is arranged in the second groove 1212, and the positioning block 122 is provided with the positioning groove 1221.

[0049] From the above description, it can be seen that the shape of the positioning block 122 can be set corresponding to the outer contour of the speaker, and the shape of the base 121 can be set corresponding to the sound-emitting part of the speaker. By disassembling and assembling different positioning blocks 122 and bases 121, the applicability of this speaker testing tooling can be further increased.

[0050] Furthermore, a positioning column 1213 and a positioning hole 1222 cooperating with the positioning column 1213 are respectively provided on the contact surface between the base 121 and the positioning block 122 .

[0051] As can be seen from the above description, the cooperation between the positioning column 1213 and the positioning hole 1222 can improve the relative position accuracy of the base 121 and the positioning block 122 , ensuring that the sound-emitting part of the speaker is aligned with the test hole 1211 on the base 121 .

[0052] Furthermore, a protrusion 21 is provided on one side of the cover plate 2 close to the positioning groove 1221 .

[0053] As can be seen from the above description, the shape of the protrusion 21 corresponds to the shape of the positioning groove 1221 , and the cover plate 2 improves the covering effect of the speaker and the positioning groove 1221 through the protrusion 21 .

[0054] Furthermore, a toggle clamp 7 is provided on the tool body 1 , and the toggle clamp 7 is used to lock the relative position relationship between the cover plate 2 and the tool body 1 .

[0055] As can be seen from the above description, the operator can control the cover plate 2 to tightly cover the tool body 1 or open the positioning groove 1221 through the toggle clamp 7 .

[0056] Please refer to Figures 1 to 6 , the first embodiment of the present utility model is: a loudspeaker testing tool, comprising a tool body 1, a cover plate 2 and a volume block 3; the tool body 1 is provided with a positioning groove 1221 for accommodating the loudspeaker, and the tool body 1 is also provided with a test hole 1211 connected to the positioning groove 1221; the cover plate 2 can be movably covered on the positioning groove 1221; the volume block 3 is placed in the positioning groove 1221. Among them, the positioning groove 1221 is used to place the loudspeaker to be tested, and the test hole 1211 is set corresponding to the sound-emitting part of the loudspeaker to be tested. During the test process, the positioning groove 1221 simulates the back cavity of the loudspeaker module, and the corresponding number or shape of volume blocks 3 are placed in the positioning groove 1221 to simulate the back cavity of loudspeaker modules of different models, and test the performance parameters of the loudspeaker in different back cavities, thereby improving the applicability of the present loudspeaker testing tool and reducing the equipment cost.

[0057] like Figure 3As shown, in order to prevent the volume block 3 from moving during the test, the volume block 3 is respectively in contact with the tooling body 1 and the cover plate 2, that is, the volume block 3 is clamped between the tooling body 1 and the cover plate 2. In this embodiment, the volume block 3 is configured to be annular, and the outer peripheral surface of the volume block 3 is in contact with the inner peripheral surface of the positioning groove 1221, and the volume block 3 is arranged around the speaker to be tested. In other embodiments, it is also feasible that the volume block 3 can be configured to other shapes; it is also feasible that the contact surface between the volume block 3 and the tooling body 1 is respectively provided with a positioning boss and a positioning pit that cooperates with the positioning boss; it is also feasible that the contact surface between the volume block 3 and the cover plate 2 is respectively provided with a positioning boss and a positioning pit that cooperates with the positioning boss.

[0058] like Figure 4 As shown, a protrusion 21 is provided on one side of the cover plate 2 close to the positioning groove 1221. The shape of the protrusion 21 corresponds to the shape of the positioning groove 1221, and the cover plate 2 improves the effect of covering the speaker and the positioning groove 1221 through the protrusion 21.

[0059] like Figure 3 As shown, a test probe 4 and a pressure probe 5 are provided on the cover plate 2. When the cover plate 2 is placed on the positioning groove 1221, the test probe 4 can be in close contact with the electrode of the speaker. At this time, the operator can control the test probe 4 to transmit an electrical signal to the speaker to make the speaker sound. The pressure probe 5 can detect the pressure exerted on the speaker, thereby detecting the airtightness of the speaker. Specifically, the cover plate 2 includes a main board 22 and a pressure plate 23. The pressure plate 23 is inserted under the main board 22. The shape of the pressure plate 23 corresponds to the shape of the positioning groove 1221. The protrusion 21 is formed by the pressure plate 23 and a partial area of ​​the cover plate 2. The bottom surface of the pressure plate 23 contacts the volume block 3. The test probe 4 and the pressure probe 5 are installed on the pressure plate 23. Avoidance holes corresponding to the test probe 4 and the pressure probe 5 are provided on the main board 22. The mainboard 22 is also provided with a pressure relief hole 221 , which is connected to the top surface of the mainboard 22 and the side of the mainboard 22 close to the pressure plate 23 . The pressure relief hole 221 is used to balance the internal and external air pressure of the speaker test fixture.

[0060] like Figure 3 and Figure 4 As shown, a sealing ring 6 is provided between the tool body 1 and the cover plate 2, and the sealing ring 6 surrounds the positioning groove 1221. In this embodiment, the sealing ring 6 is made of cotton. In other embodiments, the sealing ring 6 can be made of silicone or rubber.

[0061] like Figure 1 and Figure 5As shown, the fixture body 1 includes a baffle 11 and a positioning seat 12. The baffle 11 is provided with a first groove 111, and the positioning seat 12 is disposed in the first groove 111. Specifically, a first through-hole 112 is defined in the first groove 111, and a positioning slot 1221 is provided in the positioning seat 12, and the first through-hole 112 is connected to the test hole 1211. In this embodiment, the positioning seat 12 is detachably connected to the baffle 11 via screws. The operator can replace the positioning seat 12 according to actual testing requirements, making the speaker test fixture suitable for different speaker models, thereby improving the applicability of the speaker test fixture.

[0062] like Figure 3 As shown, the positioning seat 12 includes a base 121 and a positioning block 122. The base 121 is arranged in the first groove 111. The base 121 is provided with a second groove 1212. The second groove 1212 is provided with a test hole 1211. The positioning block 122 is arranged in the second groove 1212. The positioning block 122 is provided with a positioning groove 1221. In this embodiment, the positioning block 122 is detachably connected to the base 121 by screws. The positioning block 122 is provided with a second through hole connecting the positioning groove 1221 and the test hole 1211. The shape of the positioning block 122 can be set to correspond to the outer contour of the speaker, and the shape of the base 121 can be set to correspond to the sound-emitting part of the speaker. By disassembling and assembling different positioning blocks 122 and bases 121, the applicability of the speaker testing tool can be further increased.

[0063] like Figure 4 As shown, to improve the relative positioning accuracy of the base 121 and the positioning block 122 and ensure that the sound-emitting portion of the speaker is aligned with the test hole 1211 on the base 121, a positioning post 1213 and a positioning hole 1222 that cooperates with the positioning post 1213 are respectively provided on the contact surface of the base 121 and the positioning block 122. In this embodiment, the positioning post 1213 is provided on the base 121, is cylindrical, and there are two positioning posts 1213. The positioning holes 1222 are provided in a one-to-one correspondence with the number of positioning posts 1213. In other embodiments, it is also feasible to provide the positioning post 1213 on the positioning block 122 and the positioning holes 1222 on the base 121; the positioning post 1213 can be provided in a prismatic or elliptical shape.

[0064] like Figure 1 As shown, the tool body 1 is also provided with a toggle clamp 7, which is used to lock the relative position of the cover plate 2 and the tool body 1. Specifically, a bracket is mounted above the base 121 via screws, and the toggle clamp 7 is mounted on the bracket. The toggle clamp 7 is used to apply downward pressure to the cover plate 2, thereby pressing the cover plate 2 against the tool body 1.

[0065] In summary, the positioning slots of the speaker testing tool provided by the present invention are used to place the speaker to be tested, and the test holes are arranged corresponding to the sound-producing portion of the speaker to be tested. After the cover plate is placed on the positioning slots, the operator can use acoustic testing equipment to collect the audio signal generated by the speaker at the test holes. The positioning slots simulate the rear cavity of the speaker module during the test process. By placing a corresponding number or shape of volume blocks into the positioning slots, the rear cavities of different speaker modules can be simulated, and the performance parameters of the speaker in different rear cavities can be tested, thereby improving the applicability of the speaker testing tool and reducing equipment costs.

[0066] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A loudspeaker testing tool, characterized in that: include: A tool body, wherein the tool body is provided with a positioning groove for accommodating a speaker, and the tool body is also provided with a test hole communicating with the positioning groove; a cover plate, the cover plate being movably arranged to cover the positioning groove; A volume block is placed in the positioning groove.

2. The loudspeaker testing tool according to claim 1, characterized in that: The volume blocks respectively contact the tool body and the cover plate.

3. The loudspeaker testing tool according to claim 1, characterized in that: A test probe is provided on the cover plate.

4. The loudspeaker testing tool according to claim 1, characterized in that: A pressure probe is provided on the cover plate.

5. The loudspeaker testing tool according to claim 1, characterized in that: A sealing ring is provided between the tool body and the cover plate, and the sealing ring surrounds the positioning groove.

6. The loudspeaker testing tool according to claim 1, characterized in that: The tooling body includes a baffle and a positioning seat, the baffle is provided with a first groove, and the positioning seat is provided in the first groove; wherein, a first through hole is opened on the first groove, the positioning groove is provided on the positioning seat, and the first through hole is connected to the test hole.

7. The loudspeaker testing tool according to claim 6, characterized in that: The positioning seat includes a base and a positioning block. The base is arranged in the first groove. The base is provided with a second groove. The second groove is provided with the test hole. The positioning block is arranged in the second groove. The positioning block is provided with the positioning groove.

8. The loudspeaker testing tool according to claim 7, characterized in that: A positioning column and a positioning hole matched with the positioning column are respectively provided on the contact surface of the base and the positioning block.

9. The loudspeaker testing tool according to claim 1, characterized in that: A protrusion is provided on one side of the cover plate close to the positioning groove.

10. The loudspeaker testing tool according to claim 1, characterized in that: The tool body is further provided with a toggle clamp, which is used to lock the relative position relationship between the cover plate and the tool body.

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