Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, comprising a tool main body, the tool main body is provided with a step groove, the groove wall of the step groove is provided with a plurality of steps, and the plurality of steps are arranged upwards on the groove wall along the vertical height direction step by step. And the cross section of the step groove in the vertical height direction of the vertical tool main body is gradually increased upwards along with the multiple steps. According to the utility model, the plurality of steps are arranged upwards step by step on the groove wall along the vertical height direction, so that the step groove can have a plurality of different cross section sizes in the vertical height direction so as to adapt to micro loudspeakers with different sizes, thereby being capable of effectively matching the size fluctuation of products; therefore, test misjudgment caused by size fluctuation of the miniature loudspeaker product can be better improved.

Description

Technical Field

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

[0002] With the continuous advancement of chip technology, battery technology, and sensor technology, smart watches are able to achieve more functions, such as health monitoring, communication, navigation, etc. In order to increase its practicality, smart watches must also have a waterproof rating of 5ATM or above. Therefore, the micro speakers in smart watches must also have a waterproof rating of 5ATM or above. In actual use, if you want to test the micro speakers, you cannot use the traditional inflation test. At this time, you need to fill water to cover the surface of the micro speakers, and then continue to inflate for testing. However, in the actual testing process, the product size of the micro speakers will fluctuate, and the grooves on the existing test tooling for placing the micro speakers cannot accurately match the product size fluctuations, which makes it easy to cause test misjudgments due to product size fluctuations during real water testing. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a micro-speaker testing tool to solve the problem that the grooves for placing micro-speakers on the existing micro-speaker testing tool cannot accurately match the product size fluctuations, which makes it easy for test misjudgments to occur due to product size fluctuations when conducting real water testing.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A micro-speaker testing tool comprises a tool body, wherein the tool body is provided with a step groove, and the groove wall of the step groove is provided with a plurality of steps, wherein the plurality of steps are arranged upward step by step along the vertical height direction on the groove wall, and the cross section of the step groove in the vertical height direction perpendicular to the tool body increases step by step as the plurality of steps increase upward.

[0006] Furthermore, in the micro-speaker testing fixture described in the utility model, the step is composed of an upper bottom surface, a lower bottom surface and a side wall connecting the two, wherein the upper bottom surface is an inclined surface or a curved surface.

[0007] Furthermore, in the micro-speaker testing tooling described in the present invention, a water flow trough is provided at the bottom of the step groove, the depth of the water flow trough gradually increases along the first direction, a first opening and a second opening are provided in the water flow trough, and the first opening is arranged at a position higher than that of the second opening in the water flow trough; a first channel and a second channel connected to the outside are provided in the tooling body, and the first channel is connected to the first opening, and the second channel is connected to the second opening.

[0008] Furthermore, in the micro-speaker testing tooling described in the utility model, the first channel includes a first sub-channel and a second sub-channel that are interconnected, and an extension direction of the first sub-channel is arranged at an angle to an extension direction of the second sub-channel.

[0009] Furthermore, in the micro-speaker testing tooling of the present invention, one end of the first sub-channel is connected to the first opening, and the other end opening of the first sub-channel is arranged on a side surface of the tooling body.

[0010] Furthermore, in the micro-speaker testing tool described in the utility model, a first shielding portion is further provided on the tool body, and the first shielding portion is embedded in the other end opening of the first sub-channel.

[0011] Furthermore, in the micro-speaker testing tooling described in the utility model, a first channel branch and a second channel branch connected to each other are provided in the second sub-channel, an opening of the first channel branch is arranged on the bottom surface of the tooling body, and an opening of the second channel branch is arranged on one side surface of the tooling body.

[0012] Furthermore, in the micro-speaker test tooling described in the utility model, a plurality of first through holes are provided on the tooling body, the first through holes include a first connecting hole and a second connecting hole which are coaxially arranged and connected to each other, and the diameter of the first connecting hole is greater than the diameter of the second connecting hole.

[0013] Furthermore, in the micro-speaker testing tool described in the utility model, a sealing ring and an annular groove opening upward are also provided on the tool body, and the sealing ring is partially embedded in the annular groove.

[0014] Furthermore, in the micro-speaker testing fixture of the present invention, the cross section of the annular groove in the direction perpendicular to the height of the fixture body gradually decreases upward along the height direction.

[0015] The beneficial effect of the utility model is that: a step groove is provided on the micro-speaker test fixture, and the step groove can be used to place the micro-speaker to be tested. The groove wall of the step groove is provided with multiple steps, and the multiple steps are arranged step by step upward along the vertical height direction on the groove wall, and the cross-section of the step groove in the vertical height direction of the fixture body increases step by step with the multiple steps upward, so that the step groove can have multiple different cross-sectional sizes in the vertical height direction, thereby adapting to micro-speakers of different sizes. In other words, the micro-speaker test fixture provided by the utility model can effectively match the product size fluctuation, thereby better improving the test misjudgment caused by the micro-speaker product size fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the micro-speaker testing tool of the utility model in one embodiment at one viewing angle;

[0017] Figure 2 for Figure 1 A cross-sectional schematic diagram of a micro-speaker test fixture is shown;

[0018] Figure 3 for Figure 2 A partial enlarged view of point A of the micro speaker test fixture shown;

[0019] Figure 4 for Figure 1 Another cross-sectional schematic diagram of the micro-speaker test fixture shown;

[0020] Figure 5 It is a schematic structural diagram of the micro-speaker testing tool described in the utility model under another viewing angle in one implementation manner.

[0021] Description of labels:

[0022] 1. tooling body; 11. first sub-channel; 12. second sub-channel; 121. first channel branch; 122. second channel branch; 13. first through hole; 14. third sub-channel; 15. fourth sub-channel; 151. third channel branch; 152. fourth channel branch; 16. second through hole;

[0023] 2. Step groove;

[0024] 3. water flow channel; 31. first opening; 32. second opening;

[0025] 4. Sealing ring;

[0026] 5. Annular groove. DETAILED DESCRIPTION

[0027] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0028] Please refer to Figures 1 to 5 The utility model provides a micro speaker testing tool, which includes a tool body 1, a step groove 2 is provided on the tool body 1, and a plurality of steps are provided on the groove wall of the step groove 2. The plurality of steps are arranged step by step upward along the vertical height direction on the groove wall, and the cross section of the step groove 2 in the vertical height direction perpendicular to the tool body 1 increases step by step upward along the plurality of steps.

[0029] From the above description, it can be seen that the beneficial effect of the utility model is that the micro-speaker test tool provided by the utility model can be used to perform a real water test on a micro-speaker. On the micro-speaker test tool, it includes a tool body 1 and a step groove 2 arranged on the tool body 1, and the step groove 2 can be used to place the micro-speaker to be tested. The groove wall of the step groove 2 is provided with multiple steps, and the multiple steps are arranged step by step upward along the vertical height direction on the groove wall, and the cross-section of the step groove 2 in the vertical height direction of the tool body 1 increases step by step with the multiple steps upward, so that the step groove 2 can have multiple different cross-sectional sizes in the vertical height direction, thereby adapting to micro-speakers of different sizes. Therefore, when using the micro-speaker test tool to perform a real water test on a micro-speaker, if the product size of the micro-speaker fluctuates, then within a certain size, the micro-speaker can be embedded in the step groove 2 and reach a sealed state. In the existing micro-speaker test fixture, since the groove for placing the micro-speaker is a straight up and down structure, that is, the cross-sectional size of the groove in the height direction is the same, at this time, if the size of the micro-speaker fluctuates, such as the size of the micro-speaker is too small, the micro-speaker cannot be sealed and stuck in the groove. When performing a real water test, the water at the bottom of the groove may leak out, which may lead to the risk of test failure. However, in the micro-speaker test fixture provided by the utility model, if the size of the micro-speaker is too small, the micro-speaker can be moved down in the step groove 2. Since the cross-section of the lower half of the step groove 2 is smaller than the cross-section of the upper half, the micro-speaker can be sealed and stuck in the step groove 2, thereby quickly and effectively reaching a sealed state for real water testing. In summary, the micro-speaker test fixture provided by the utility model can effectively match the fluctuation of product size, thereby better improving the test misjudgment caused by the fluctuation of the size of the micro-speaker product.

[0030] Furthermore, in the micro-speaker testing fixture described in the utility model, the step is composed of an upper bottom surface, a lower bottom surface and a side wall connecting the two, wherein the upper bottom surface is an inclined surface or a curved surface.

[0031] In the above technical solution of the utility model, the upper bottom surface of the step in the step groove 2 is an inclined surface or a curved surface, which helps to quickly move the micro speaker up and down (such as moving down). It should be noted that the above upper bottom surface can be a curved surface or an inclined surface, or a surface of other shapes, which is not limited here.

[0032] Furthermore, in the micro-speaker testing tooling described in the present invention, a water flow trough 3 is provided at the bottom of the step groove 2, the groove depth of the water flow trough 3 gradually increases along the first direction, and a first opening 31 and a second opening 32 are provided in the water flow trough 3, and the position of the first opening 31 in the water flow trough 3 is higher than that of the second opening 32; a first channel and a second channel connected to the outside are provided in the tooling body 1, and the first channel is connected to the first opening 31, and the second channel is connected to the second opening 32.

[0033] In the above technical solution of the utility model, before conducting the real water test, the front cavity part of the micro-speaker can be placed downward into the step groove 2, so that the micro-speaker can be quickly fixed to the tooling body 1 for subsequent testing. When conducting the real water test, water can be first injected through the first through hole 13 (i.e., the water injection hole), and the water flows into the step groove 2 through the first through hole 13. The water submerges the micro-speaker, and then pressurizes to complete the test. After the test, the water in the step groove 2 needs to be drained out. At this time, the water in the step groove 2 can be drained out through the second through hole 16 (i.e., the drainage hole). From the above description, it can be seen that the utility model is provided with a water flow trough 3 in the step groove 2, and the water accumulated in the step groove 2 can quickly flow into the second through hole 16 through the water flow trough 3, and then flow out through the second through hole 16 to achieve the drainage effect. On this basis, the hole height of the first through hole 13 is made greater than the hole height of the second through hole 16, that is, the second through hole 16 for drainage is located at a lower level on the tooling body 1 than the first through hole 13 for water injection. Therefore, the principle of water flowing to lower places is utilized, so that after the real water test, the water can be quickly drained out, thereby increasing the drainage speed. In addition, the test tooling is provided with a step groove 2, through which the micro speaker to be tested in real water can be quickly and effectively fixed in place, with good sealing, which is convenient for subsequent real water testing.

[0034] Furthermore, in the micro-speaker testing tooling described in the present invention, the first channel includes a first sub-channel 11 and a second sub-channel 12 which are interconnected, and an extension direction of the first sub-channel 11 and an extension direction of the second sub-channel 12 are arranged at an angle.

[0035] In the above technical solution of the utility model, the first channel may include a first sub-channel 11 and a second sub-channel 12 which are interconnected, and the extension direction of the first sub-channel 11 is different from the extension direction of the second sub-channel 12. That is, the first channel has two sub-channels in different directions, and corresponding water injection and gas injection operations can be performed through the sub-channels in different extension directions.

[0036] Furthermore, in the micro-speaker testing tool of the present invention, one end of the first sub-channel 11 is connected to the first opening 31 , and the other end opening of the first sub-channel 11 is arranged on a side surface of the tool body 1 .

[0037] In the above technical solution of the utility model, one end of the first sub-channel 11 is connected to the first opening 31, and the other end opening is set on a side surface of the tooling body 1, so that the first sub-channel 11 can be connected to the step groove 2 for corresponding water injection and gas injection operations.

[0038] Furthermore, in the micro-speaker testing tool described in the utility model, a first shielding portion is further provided on the tool body 1 , and the first shielding portion is embedded in the other end opening of the first sub-channel 11 .

[0039] Furthermore, in the micro-speaker testing tooling described in the present invention, a first channel branch 121 and a second channel branch 122 which are connected to each other are provided in the second sub-channel 12, an opening of the first channel branch 121 is arranged on the bottom surface of the tooling body 1, and an opening of the second channel branch 122 is arranged on one side surface of the tooling body 1.

[0040] In the above technical solution of the present utility model, the second sub-channel 12 is provided with two channel branches, namely the first channel branch 121 and the second channel branch 122, through which corresponding water injection and gas injection operations can be performed.

[0041] Furthermore, in the micro-speaker test fixture described in the present invention, a plurality of first through holes 13 are provided on the fixture body 1, and the first through holes 13 include a first connecting hole and a second connecting hole which are coaxially arranged and connected to each other, and the diameter of the first connecting hole is greater than the diameter of the second connecting hole.

[0042] In the above technical solution of the utility model, a plurality of first through holes 13 are arranged on the tooling body 1, and the first through holes 13 are composed of an upper part and a lower part. The diameter of the upper part (i.e., the first connecting hole) is larger than the diameter of the lower part (i.e., the second connecting hole). The first through holes 13 are used for screws to pass through to fix the tooling.

[0043] Furthermore, in the micro-speaker testing tool described in the present utility model, a sealing ring 4 and an annular groove 5 opening upward are further provided on the tool body 1 , and a portion of the sealing ring 4 is embedded in the annular groove 5 .

[0044] In the above technical solution of the utility model, the sealing ring 4 is embedded in the annular groove 5 with the opening facing upward to perform sealing.

[0045] Furthermore, in the micro-speaker testing fixture of the present invention, the cross section of the annular groove 5 in the direction perpendicular to the height of the fixture body 1 gradually decreases upward along the height direction.

[0046] In the above technical solution of the utility model, the cross section of the annular groove 5 in the vertical height direction perpendicular to the tooling body 1 gradually decreases upward along the height direction, that is, the structure of the axial cross section of the annular groove 5 is a dovetail groove structure that is small at the top and large at the bottom. When it is necessary to test with the test tool, the sealing ring 4 is set in the annular groove 5. Since the structure of the axial cross section of the annular groove 5 is no longer a traditional straight groove structure, but a dovetail groove structure that is small at the top and large at the bottom, therefore, setting the sealing ring 4 in the annular groove 5 of the dovetail groove structure can avoid the sealing ring 4 being lifted and falling off during multiple real water tests, thereby causing sealing failure, which is helpful for acoustic performance testing. It should be noted that when using the test fixture, a cover plate (not shown) is also used in conjunction with the fixture body 1 for sealing to perform testing. At this time, the sealing ring 4 is partially embedded in the fixture body 1 and partially embedded in the cover plate. Specifically, when the cover plate is pressed down to the upper surface of the fixture body 1, the sealing ring 4 forms a seal with the fixture body 1, and the sealing ring 4 is deformed to fill the remaining dovetail groove (i.e., the annular groove 5) bottom space. When the cover plate is raised, since the sealing ring 4 is deformed and does not return to its original shape, the annular groove 5 is a shape that is small at the top and large at the bottom, resulting in the shape of the sealing ring 4 being small at the top and large at the bottom. The sealing ring 4 is stuck in the annular groove 5 to prevent the sealing ring 4 from being lifted up and falling off by the cover plate.

[0047] Please refer to Figures 1 to 5 The first embodiment of the present utility model is: a micro speaker test tool, which includes a tool body 1, and the tool body 1 is roughly in the shape of a rectangular parallelepiped. Figure 1 As shown, the tooling body 1 is provided with a step groove 2 with an opening facing upward, and the step groove 2 can be used to place the micro speaker to be tested. A plurality of steps (such as two steps) are provided on the groove wall of the step groove 2, and the plurality of steps are arranged step by step upward along the vertical height direction on the groove wall, and the cross section of the step groove 2 in the vertical height direction perpendicular to the tooling body 1 increases step by step as the plurality of steps increase upward. Each step is composed of an upper bottom surface, a lower bottom surface and a side wall connecting the two, wherein the upper bottom surface is a curved surface or an inclined surface, which is not limited here. It should be pointed out that the step groove 2 is arranged at the opening section (i.e., the opening portion close to the upper surface of the tooling body 1) as follows: the cross section in the vertical height direction perpendicular to the tooling body 1 gradually increases as the vertical height direction increases upward.

[0048] In this embodiment, in order to conduct a real water test on the micro-speaker through the micro-speaker test tool, a water flow channel 3 is provided at the bottom of the step groove 2, the depth of the water flow channel 3 gradually increases along the first direction, and a first opening 31 and a second opening 32 are provided in the water flow channel 3, and the position of the first opening 31 in the water flow channel 3 is higher than that of the second opening 32; a first channel and a second channel connected to the outside are provided in the tool body 1, and the first channel is connected to the first opening 31, and the second channel is connected to the second opening 32. Figures 1 to 5 The step groove 2, the water flow groove 3, the first channel and the second channel are described in detail.

[0049] In this embodiment, if Figure 1 As shown, the shape of the step groove 2 is similar to a runway. The step groove 2 extends along a first direction, which is the length direction of the tooling body 1. The depth of the water flow groove 3 gradually increases along the first direction close to the first opening 31, that is, the bottom of the water flow groove 3 is an inclined surface. Figure 4 For example, the height of the bottom of the groove relative to the bottom surface of the tooling body 1 increases from left to right. The bottom of the groove is provided with a first opening 31 and a second opening 32, and the first opening 31 is arranged at a position higher than the second opening 32 in the water flow groove 3, that is, the first opening 31 is correspondingly arranged on the right side (i.e., the side with a higher bottom of the groove), and the first opening 31 is communicated with the first channel, and the second opening 32 is arranged on the left side (i.e., the side with a lower bottom of the groove), and the second opening 32 is communicated with one end of the second sub-channel 12.

[0050] In this embodiment, if Figure 2 , Figure 3 As shown, the first channel and the second channel extend from the bottom of the step groove 2 and extend to both sides respectively. The first channel includes two sub-channels with circular cross-sections, namely the first sub-channel 11 and the second sub-channel 12. The main part of the first sub-channel 11 extends along the width direction of the tooling body 1, and one end of the first sub-channel 11 is connected to the first opening 31, and the other end opening of the first sub-channel 11 is arranged on a side surface of the tooling body 1. And at the other end opening of the first sub-channel 11, a first shielding portion that is adapted to the shape and size of the opening is provided, and the first shielding portion is a cylinder. The first shielding portion of the cylinder is embedded in the other end opening of the first sub-channel 11 to block the opening. The main part of the second sub-channel 12 extends along the length direction of the tooling body 1, and one end of the second sub-channel 12 is connected to the first sub-channel 11, as shown in FIG. Figure 5As shown, the second sub-channel 12 extends from the middle position of the first sub-channel 11 and extends along the length direction of the tooling body 1. The second sub-channel 12 is provided with a first channel branch 121 and a second channel branch 122 which are connected to each other. The opening of the first channel branch 121 is arranged on the bottom surface of the tooling body 1, and the opening of the second channel branch 122 is arranged on a side surface of the tooling body 1. At the opening of the second channel branch 122, a second shielding portion which is adapted to the shape and size of the second channel branch 122 is arranged. The second shielding portion is a cylinder. The opening of the second channel branch 122 is blocked by embedding the cylindrical second shielding portion into the opening of the second channel branch 122.

[0051] In the present embodiment, the second channel includes two sub-channels with circular cross-sections, namely, a third sub-channel 14 and a fourth sub-channel 15. The main part of the third sub-channel 14 extends along the width direction of the tooling body 1, and one end of the third sub-channel 14 is connected to the above-mentioned second opening 32, and the other end opening of the third sub-channel 14 is arranged on the side of the tooling body 1. It should be pointed out that the radius of the other end opening of the third sub-channel 14 is larger than the main part of the third sub-channel 14. At the other end opening of the third sub-channel 14, a third shielding portion that is adapted to the shape and size of the other end opening of the third sub-channel 14 is arranged, and the third shielding portion is a cylinder. The third shielding portion of the cylinder is embedded in the other end opening of the third sub-channel 14 to block the opening. The main part of the fourth sub-channel 15 extends along the length direction of the tooling body 1, and one end of the fourth sub-channel 15 is connected to the third sub-channel 14, as shown in FIG. Figure 5 As shown, the fourth sub-channel 15 extends from the middle position of the third sub-channel 14 and extends along the length direction of the tooling body 1. The fourth sub-channel 15 is provided with a third channel branch 151 and a fourth channel branch 152 which are connected to each other. The opening of the third channel branch 151 is arranged on the bottom surface of the tooling body 1, and the opening of the fourth channel branch 152 is arranged on a side surface of the tooling body 1. At the opening of the fourth channel branch 152, a fourth shielding portion which is adapted to the shape and size of the fourth channel branch 152 is arranged, and the fourth shielding portion is a cylinder. The opening of the fourth channel branch 152 is blocked by embedding the cylindrical fourth shielding portion into the second end opening. It should be noted that the structures of the first channel and the second channel on the tooling body 1 are similar.

[0052] In addition, in this embodiment, the tool body 1 is further provided with an annular groove 5, a plurality of first through holes 13 and a plurality of second through holes 16. Figure 1 as well as Figure 5 The above components are introduced in detail. Figure 5As shown, the annular groove 5 is arranged on the upper bottom surface of the tooling body 1 and is arranged around the periphery of the step groove 2. The opening of the annular groove 5 is upward and the shape of the annular groove 5 is an annular runway, which can be used to set the sealing ring 4. When testing is performed through the test tool, the sealing ring 4 is set on the annular groove 5 to achieve a sealing effect. It should be pointed out that the material of the sealing ring 4 is silicone, and the cross-section of the annular groove 5 in the direction perpendicular to the height of the tooling body 1 gradually decreases upward along the vertical height direction. In this embodiment, a plurality of first through holes 13 are also provided on the tooling body 1, such as Figure 5 As shown, two of them are distributed at the two corners of the tooling body 1, and the other two are arranged near the side of the tooling body 1. The first through hole 13 is composed of an upper part and a lower part, and the diameter of the upper part (i.e., the first connection hole) is larger than the diameter of the lower part (i.e., the second connection hole). In addition, two second through holes 16 are symmetrically distributed along the width direction of the tooling body 1 with the step groove 2 as the central axis on the tooling body 1. The second through holes 16 are used for positioning to guide the above-mentioned cover plate to be arranged on the upper surface of the tooling body 1. The axial cross section of the second through hole 16 is circular or elliptical, and the second through hole 16 extends along the height direction of the tooling body 1.

[0053] In summary, the test fixture provided by the utility model: (1) a step groove for placing the micro speaker to be tested is arranged on the fixture body, and the cross section of the step groove in the vertical height direction perpendicular to the fixture body increases step by step with the multiple steps, so that the step groove can have multiple different cross-sectional sizes in the vertical height direction, thereby adapting to micro speakers of different sizes, making it easier to match product size fluctuations, and thus better improving the test misjudgment caused by the size fluctuations of the micro speaker product. (2) During the real water test of the micro speaker, since the bottom of the water flow trough is an inclined surface, the water flow can quickly flow out through the opening for drainage and exhaust at the bottom of the trough, that is, through the second opening, which is convenient for rapid and effective drainage after the test and improves the test efficiency. (3) The cross section of the annular groove in the vertical height direction perpendicular to the fixture body gradually decreases upward along the height direction, that is, the structure of the axial cross section of the annular groove is a dovetail groove structure with a small top and a large bottom, which can avoid the sealing ring being lifted and falling off during multiple real water tests, thereby causing sealing failure, and is helpful for acoustic performance testing.

[0054] The above description is only 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 specification 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 micro speaker testing tool, characterized in that: It includes a tooling body, which is provided with a step groove. The groove wall of the step groove is provided with multiple steps. The multiple steps are arranged step by step upward along the vertical height direction on the groove wall, and the cross-section of the step groove in the vertical height direction perpendicular to the tooling body increases step by step as the multiple steps increase upward.

2. The micro speaker test fixture according to claim 1, characterized in that: The step is composed of an upper bottom surface, a lower bottom surface and a side wall connecting the two, wherein the upper bottom surface is an inclined surface or a curved surface.

3. The micro speaker test fixture according to claim 1, characterized in that: A water flow groove is provided at the bottom of the step groove, the groove depth of the water flow groove gradually increases along the first direction, a first opening and a second opening are provided in the water flow groove, and the first opening is arranged at a position higher than that of the second opening in the water flow groove; The tool body is provided with a first channel and a second channel communicated with the outside, and the first channel is communicated with the first opening, and the second channel is communicated with the second opening.

4. The micro speaker test fixture according to claim 3, characterized in that: The first channel includes a first sub-channel and a second sub-channel which are interconnected, and an extension direction of the first sub-channel is arranged at an angle to an extension direction of the second sub-channel.

5. The micro speaker test fixture according to claim 4, characterized in that: One end of the first sub-channel is communicated with the first opening, and the other end opening of the first sub-channel is arranged on a side surface of the tooling body.

6. The micro speaker test fixture according to claim 5, characterized in that: A first shielding portion is also provided on the tooling body, and the first shielding portion is embedded in the other end opening of the first sub-channel.

7. The micro speaker testing tool according to claim 4, characterized in that: The second sub-channel is provided with a first channel branch and a second channel branch which are connected to each other, the opening of the first channel branch is arranged on the bottom surface of the tooling body, and the opening of the second channel branch is arranged on a side surface of the tooling body.

8. The micro speaker testing tool according to claim 1, characterized in that: The tool body is provided with a plurality of first through holes, wherein the first through holes include first connecting holes and second connecting holes which are coaxially arranged and connected to each other, and the diameter of the first connecting holes is greater than the diameter of the second connecting holes.

9. The micro speaker testing tool according to claim 1, characterized in that: The tool body is also provided with a sealing ring and an annular groove opening upward, and the sealing ring is partially embedded in the annular groove.

10. The micro speaker testing tool according to claim 9, characterized in that: The cross section of the annular groove in a direction perpendicular to the height of the tooling body gradually decreases upward along the height direction.

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