Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, which comprises a tool main body, a test groove with an upward opening is arranged on the tool main body, and the cross section of the test groove in the vertical height direction of the tool main body is gradually increased upwards along the vertical height direction. According to the utility model, the cross section of the test groove in the direction perpendicular to the height direction of the tool main body is gradually increased upwards along the vertical height direction, so that the test groove can have different cross section sizes in the height direction so as to adapt to micro loudspeakers with different sizes. That is to say, the miniature loudspeaker test tool provided by the utility model can effectively match the product size fluctuation, thereby better improving the test misjudgment caused by the size fluctuation of the miniature loudspeaker product.

Description

Technical Field

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

[0002] With the continuous progress of chip technology, battery technology and sensor technology, smart watches can achieve more functions, such as health monitoring, communication, navigation, etc. To increase their practicality, smart watches can also have a waterproof rating of more than 5ATM. Therefore, the micro speakers in smart watches must also have a waterproof rating of more than 5ATM. During actual use, if the micro speaker therein needs to be tested, traditional inflation testing cannot be used. At this time, it is necessary to first inject water to cover the surface of the micro speaker and then continue to inflate for testing. However, during the actual testing process, due to fluctuations in the product size of the micro speaker, and the test grooves on the existing testing tools cannot accurately match the product size fluctuations, it is easy to cause test misjudgment due to product size fluctuations during true water testing. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: to provide a testing tool for a micro speaker, so as to solve the problem that the test grooves on the existing testing tool for a micro speaker cannot accurately match the product size fluctuations, resulting in easy test misjudgment due to product size fluctuations during true water testing.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is:

[0005] A testing tool for a micro speaker, which includes: a tooling main body, and a test groove with an upward opening is arranged on the tooling main body, and the cross-section of the test groove in the vertical height direction of the tooling main body gradually increases upward along the vertical height direction.

[0006] Further, in the testing tool for a micro speaker of the utility model, a water flow groove is arranged at the bottom of the test groove, the groove depth of the water flow groove gradually increases along a first direction, a first opening and a second opening are arranged in the water flow groove, and the position of the first opening in the water flow groove is higher than that of the second opening; a first channel and a second channel communicating with the outside are arranged in the tooling main body, and the first channel is communicated with the first opening, and the second channel is communicated with the second opening.

[0007] Further, in the testing tool for a micro speaker of the utility model, the first channel includes a first sub-channel and a second sub-channel which are communicated with each other, and the extending direction of the first sub-channel and the extending direction of the second sub-channel are arranged at an angle.

[0008] Further, in the micro speaker test tooling of the present utility model, one end of the first sub-channel communicates with the first opening, and the other end of the first sub-channel is open on one side surface of the tooling main body.

[0009] Further, in the micro speaker test tooling of the present utility model, a first shielding portion is further provided on the tooling main body, and the first shielding portion is embedded into the opening at the other end of the first sub-channel.

[0010] Further, in the micro speaker test tooling of the present utility model, the second sub-channel includes a first channel branch and a second channel branch. The opening of the first channel branch is provided on the bottom surface of the tooling main body, and the opening of the second channel branch is provided on one side surface of the tooling main body.

[0011] Further, in the micro speaker test tooling of the present utility model, a second shielding portion is further provided on the tooling main body, and the second shielding portion is embedded into the opening of the second channel branch.

[0012] Further, in the micro speaker test tooling of the present utility model, a plurality of first through holes are provided on the tooling main body. The first through holes include a first connection hole and a second connection hole that are coaxially arranged and communicate with each other. The diameter of the first connection hole is larger than the diameter of the second connection hole.

[0013] Further, in the micro speaker test tooling of the present utility model, a sealing ring and an annular groove with an upward opening are provided on the tooling main body, and the sealing ring is partially embedded into the annular groove.

[0014] Further, in the micro speaker test tooling of the present utility model, the cross-section of the annular groove in the direction perpendicular to the height direction of the tooling main body gradually decreases upward along the height direction.

[0015] The beneficial effect of the present utility model is that: on this micro speaker test tooling, a test groove for placing the micro speaker to be tested is provided. The cross-section of the test groove in the direction perpendicular to the height direction of the tooling main body gradually increases upward along the vertical height direction, so that the test groove can have different cross-sectional sizes in the height direction, thereby adapting to micro speakers of different sizes. That is to say, the micro speaker test tooling provided by the present utility model can effectively match the product size fluctuations, and further better improve the test misjudgment caused by the size fluctuations of the micro speaker products. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the micro speaker test tooling of the present utility model from a certain perspective in a certain embodiment;

[0017] Figure 2 is Figure 1 a schematic cross-sectional view of the micro speaker testing tooling shown;

[0018] Figure 3 is Figure 1 another schematic cross-sectional view of the micro speaker testing tooling shown;

[0019] Figure 4 is a schematic structural view of the micro speaker testing tooling according to the present utility model from another perspective in an embodiment.

[0020] Label description:

[0021] 1. Tooling main 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;

[0022] 2. Testing groove;

[0023] 3. Water chute; 31. First opening; 32. Second opening;

[0024] 4. Sealing ring;

[0025] 5. Annular groove. Specific embodiments

[0026] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with embodiments and with reference to the accompanying drawings.

[0027] Please refer to Figures 1 to 4 , the present utility model provides a micro speaker testing tooling, which includes: a tooling main body 1, a testing groove 2 with an upward opening is provided on the tooling main body 1, and the cross-section of the testing groove 2 in the direction perpendicular to the height of the tooling main body 1 gradually increases upward along the vertical height direction.

[0028] 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 test groove 2 provided on the tool body 1, and the test groove 2 can be used to place the micro-speaker to be tested. On this basis, the cross section of the test groove 2 in the vertical height direction of the tool body 1 is gradually increased upward along the vertical height direction, so that the test groove 2 can have a plurality of different cross-sectional sizes in the height direction, thereby adapting to micro-speakers of different sizes. Therefore, when the micro-speaker test tool is used to perform a real water test on the micro-speaker, if the product size of the micro-speaker fluctuates, the micro-speaker can be embedded in the test groove 2 within a certain size and reach a sealed state. In the existing micro-speaker test tool, since the test groove is a straight up and down structure, that is, the cross-sectional size of the test 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 test groove, and there is a risk of test failure when performing a real water test. However, in the micro-speaker test fixture provided by the present invention, if the size of the micro-speaker is too small, the micro-speaker can be moved down in the test groove 2. Since the cross-section of the lower half of the test groove 2 is smaller than the cross-section of the upper half, the micro-speaker can be sealed and inserted into the test groove 2 to achieve a sealed state, thereby effectively performing a real water test. In summary, the micro-speaker test fixture provided by the present invention can effectively match product size fluctuations, thereby better improving test misjudgments caused by product size fluctuations of the micro-speaker.

[0029] Furthermore, in the micro-speaker testing tool described in the utility model, a water flow trough 3 is provided at the bottom of the test groove 2, the 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 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.

[0030] In the above technical solution of the present utility model, before performing the real water test, the front cavity part of the micro speaker can be placed downward into the test groove 2 first, so as to quickly fix the micro speaker to the tooling main body 1 for subsequent testing. When performing the real water test, water can be injected first through the first through hole 13 (i.e., the water injection hole). The water flow enters the test groove 2 through the first through hole 13, submerging the micro speaker, and then pressurization is carried out to complete the test. After the test, the water flow in the test groove 2 needs to be drained. At this time, the water flow in the test groove 2 can be drained through the second through hole 16 (i.e., the drain hole). From the above description, it can be seen that in the present utility model, a water flow groove 3 is provided in the test groove 2, and the water accumulated in the test groove 2 can quickly flow into the second through hole 16 through the water flow groove 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 greater than the hole height of the second through hole 16, that is, the second through hole 16 for drainage is at a lower position on the tooling main body 1 than the first through hole 13 for water injection. Therefore, using the principle that water flows to lower places, the water can be quickly drained after the real water test, improving the drainage speed. In addition, a test groove 2 is provided on the test tooling. Through the test groove 2, the micro speaker to be tested for real water can be quickly and effectively fixed in position, with good sealing performance, facilitating subsequent real water tests.

[0031] Further, in the micro speaker test tooling of the present utility model, the first channel includes a first sub-channel 11 and a second sub-channel 12 that are interconnected, and the extending direction of the first sub-channel 11 is set at an angle to the extending direction of the second sub-channel 12.

[0032] In the above technical solution of the present utility model, the first channel may include a first sub-channel 11 and a second sub-channel 12 that are interconnected, and the extending direction of the first sub-channel 11 is different from the extending direction of the second sub-channel 12. That is, the first channel has two sub-channels with different directions. Through the sub-channels with different extending directions, corresponding water injection and gas injection operations can be carried out.

[0033] Further, in the micro speaker test tooling of the present utility model, one end of the first sub-channel 11 is connected to the first opening 31, and the other end of the first sub-channel 11 is open on one side surface of the tooling main body 1.

[0034] In the above technical solution of the present utility model, connecting one end of the first sub-channel 11 to the first opening 31 and opening the other end on one side surface of the tooling main body 1 enables the first sub-channel 11 to communicate with the test groove 2 for corresponding water injection and gas injection operations.

[0035] Further, in the micro-speaker testing tooling of the present utility model, a first shielding portion is further provided on the tooling main body 1, and the first shielding portion is embedded into the other end opening of the first sub-channel 11.

[0036] Further, in the micro-speaker testing tooling of the present utility model, the second sub-channel 12 includes a first channel branch 121 and a second channel branch 122. The opening of the first channel branch 121 is provided on the bottom surface of the tooling main body 1, and the opening of the second channel branch 122 is provided on one side surface of the tooling main body 1.

[0037] 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 the two channel branches, corresponding water injection and gas injection operations can be carried out.

[0038] Further, in the micro-speaker testing tooling of the present utility model, a second shielding portion is further provided on the tooling main body 1, and the second shielding portion is embedded into the opening of the second channel branch 122.

[0039] Further, in the micro-speaker testing tooling of the present utility model, a plurality of first through holes 13 are provided on the tooling main body 1. The first through holes 13 include a first connection hole and a second connection hole that are coaxially arranged and communicate with each other. The diameter of the first connection hole is larger than the diameter of the second connection hole.

[0040] In the above technical solution of the present utility model, a plurality of first through holes 13 are provided on the tooling main body 1. The first through hole 13 is composed of upper and lower parts. 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). The first through hole 13 is used for screws to pass through to fix the tooling.

[0041] Further, in the micro-speaker testing tooling of the present utility model, a sealing ring 4 and an upward-opening annular groove 5 are provided on the tooling main body 1, and a part of the sealing ring 4 is embedded into the annular groove 5.

[0042] In the above technical solution of the present utility model, the sealing ring 4 is embedded into the upward-opening annular groove 5 for sealing.

[0043] Further, in the micro-speaker testing tooling of the present utility model, the cross-section of the annular groove 5 in the direction perpendicular to the height direction of the tooling main body 1 gradually decreases upward along the height direction.

[0044] In the above technical solution of the present utility model, the cross-section of the annular groove 5 in the direction perpendicular to the vertical height of the tooling main 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 with a smaller upper part and a larger lower part. When it is necessary to perform tests through the test tooling, the sealing ring 4 is arranged 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 with a smaller upper part and a larger lower part, therefore, when the sealing ring 4 is arranged in the annular groove 5 with a dovetail groove structure, it can avoid the situation that the sealing ring 4 is lifted and detached during multiple true water tests, thereby causing sealing failure, which is helpful for acoustic performance testing. It should be noted that when using this test tooling, a cover plate (not shown) will also be used in combination. The cover plate is combined with the tooling main body 1 for sealing to perform tests. At this time, part of the sealing ring 4 is embedded in the tooling main body 1 and part is embedded in the cover plate. Specifically: when the cover plate is pressed down to the upper surface of the tooling main body 1, the sealing ring 4 forms a seal with the tooling main body 1, and the sealing ring 4 deforms to fill the remaining space at the bottom of the dovetail groove (i.e., the annular groove 5). When the cover plate is lifted, since the sealing ring 4 deforms and does not return to its original shape, and the annular groove 5 is in the shape of a smaller upper part and a larger lower part, the shape of the sealing ring 4 at this time is also in the shape of a smaller upper part and a larger lower part, and the sealing ring 4 is stuck by the annular groove 5, preventing the sealing ring 4 from being lifted and detached by the cover plate.

[0045] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a micro-speaker test tooling, which includes a tooling main body 1, and the general shape of the tooling main body 1 is a cuboid. As Figure 1 shown, on the upper surface of the tooling main body 1, there is a test groove 2 with an upward opening, and the test groove 2 extends along the first direction (i.e., the horizontal length direction of the tooling main body 1), and the cross-section of the test groove 2 in the direction perpendicular to the vertical height of the tooling main body 1 gradually increases upward along the vertical height direction. In addition, it should be noted that the test groove 2 is used to place the micro-speaker to be tested, and its overall shape is similar to a runway shape.

[0046] In this embodiment, in order to perform true water tests on the micro-speaker through this micro-speaker test tooling, a water flow groove 3 is provided at the bottom of the step groove in this embodiment. The depth of the water flow groove 3 gradually increases along the first direction. The water flow groove 3 is provided with a first opening 31 and a second opening 32. The position of the first opening 31 in the water flow groove 3 is higher than the position of the second opening 32; a first channel and a second channel communicating with the outside are provided in the tooling main body 1, and the first channel is communicated with the first opening 31, and the second channel is communicated with the second opening 32. The following will specifically introduce the above step groove, water flow groove 3, first channel and second channel in combination with Figures 1 to 4 the above.

[0047] In this embodiment, as Figure 1As shown, the shape of the stepped groove is similar to a runway shape, and the stepped groove extends in the first direction. The bottom of the above-mentioned water channel 3 is an inclined surface, taking Figure 3 as an example, the height of the bottom of the groove relative to the bottom surface of the tooling main body 1 increases successively from left to right. A first opening 31 and a second opening 32 are provided at the bottom of the groove. The position of the first opening 31 in the water channel 3 is higher than that of the second opening 32. That is, the first opening 31 is correspondingly provided on the right side (i.e., the side with a higher bottom of the groove). The first opening 31 is communicated with the first channel. The second opening 32 is provided 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.

[0048] In this embodiment, as Figure 4 shown, the first channel and the second channel extend out from the bottom of the stepped groove and extend to both sides respectively. The first channel includes two sub-channels with a circular cross-section, 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 main body 1, and one end of the first sub-channel 11 is communicated with the first opening 31. The other end of the first sub-channel 11 is opened on one side surface of the tooling main body 1. And at the opening of the other end of the first sub-channel 11, a first shielding part adapted to the shape and size of the opening is provided. The first shielding part is a cylinder. By embedding the cylindrical first shielding part into the opening at the other end of the first sub-channel 11, the opening is blocked. The main part of the second sub-channel 12 extends along the length direction of the tooling main body 1. One end of the second sub-channel 12 is communicated with the first sub-channel 11. As Figure 2 shown, the second sub-channel 12 extends out from the middle position of the first sub-channel 11 and extends along the length direction of the tooling main body 1. The second sub-channel 12 is provided with a first channel branch 121 and a second channel branch 122 that are communicated with each other. The opening of the first channel branch 121 is provided on the bottom surface of the tooling main body 1. The opening of the second channel branch 122 is provided on one side surface of the tooling main body 1. At the opening of the second channel branch 122, a second shielding part adapted to the shape and size of the second channel branch 122 is provided. The second shielding part is a cylinder. By embedding the cylindrical second shielding part into the opening of the second channel branch 122, the opening of the second channel branch 122 is blocked.

[0049] In this embodiment, the second channel includes two sub-channels with circular axial cross-sections, namely the third sub-channel 14 and the fourth sub-channel 15. The main part of the third sub-channel 14 extends along the width direction of the tooling main body 1, and one end of the third sub-channel 14 communicates with the second opening 32 described above. The other end of the third sub-channel 14 is open on the side surface of the tooling main body 1. It should be noted that the radius of the opening at the other end of the third sub-channel 14 is larger than the main part of the third sub-channel 14. At the opening at the other end of the third sub-channel 14, a third shielding portion having a shape and size adapted to the opening at the other end of the third sub-channel 14 is provided, and the third shielding portion is a cylinder. By embedding the cylindrical third shielding portion into the opening at the other end of the third sub-channel 14, the opening is blocked. The main part of the fourth sub-channel 15 extends along the length direction of the tooling main body 1. One end of the fourth sub-channel 15 communicates with the third sub-channel 14. As Figure 4 shown, the fourth sub-channel 15 extends out from the middle position of the third sub-channel 14 and extends along the length direction of the tooling main body 1. The fourth sub-channel 15 is provided with a third channel branch 151 and a fourth channel branch 152 that communicate with each other. The opening of the third channel branch 151 is provided on the bottom surface of the tooling main body 1, and the opening of the fourth channel branch 152 is provided on one side surface of the tooling main body 1. At the opening of the fourth opening section, a fourth shielding portion having a shape and size adapted to the fourth opening section is provided, and the fourth shielding portion is a cylinder. By embedding the cylindrical fourth shielding portion into the second end opening, the opening of the fourth opening section is blocked. It should be noted that the structures of the first channel and the second channel on the tooling main body 1 are similar.

[0050] In addition, in this embodiment, an annular groove 5, a plurality of first through holes 13, and a plurality of second through holes 16 are further provided on the tooling main body 1. The following will be combined with Figures 1 to 4 to specifically introduce the above components. As Figure 1 shown, the annular groove 5 is provided on the upper bottom surface of the tooling main body 1 and is wound around the periphery of the stepped groove. The opening of the annular groove 5 faces upward and the shape of the annular groove 5 is in the shape of an annular runway, which can be used to set the sealing ring 4. When testing is performed through this test tooling, the sealing ring 4 can be set on the annular groove 5 to achieve a sealing effect. It should be noted that the material of the sealing ring 4 can be silicone, and the cross-section of the annular groove 5 in the direction perpendicular to the height of the tooling main body 1 gradually decreases upward along the vertical height direction. In this embodiment, a plurality of first through holes 13 are further provided on the tooling main body 1. As Figure 4As shown, two of them are distributed at two corners of the tooling main body 1, and the other two are arranged near the side surface. The first through hole 13 is composed of an upper part and a lower part. The diameter of the upper part (i.e., the first connection hole) is larger than that of the lower part (i.e., the second connection hole). In addition, two second through holes 16 are provided on the tooling main body 1, which are symmetrically distributed along the width direction of the tooling main body 1 with the stepped groove as the central axis. The second through hole 16 is used for positioning to guide the above-mentioned cover plate to be arranged on the upper surface of the tooling main body 1. The axial cross-section of the second through hole 16 is circular, and the second through hole 16 extends along the height direction of the tooling main body 1.

[0051] In summary, the test tooling provided by the present utility model: (1) A test groove for placing the micro speaker to be tested is provided on the tooling main body. The cross-section of the test groove in the vertical height direction of the tooling main body gradually increases upward along the vertical height direction, so that the stepped groove can have multiple different cross-section sizes in the vertical height direction, thereby adapting to micro speakers of different sizes, more easily matching the product size fluctuations, and then better improving the test misjudgment caused by the product size fluctuations of the micro speaker. (2) During the real water test of the micro speaker, since the bottom of the water flow groove is an inclined surface, using the principle that water flows to lower places, the water flow can quickly flow out through the opening at the bottom of the groove for drainage and exhaust, that is, through the second opening, which is convenient for quick and effective drainage after the test and improves the test efficiency. (3) The cross-section of the annular groove in the vertical height direction of the tooling main 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 upper part and a large lower part, which can avoid the situation that the sealing ring is lifted and fallen off during multiple real water tests, resulting in sealing failure, and is helpful for the acoustic performance test.

[0052] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A micro speaker testing tool, characterized in that: include: A tool body, wherein the tool body is provided with a test groove opening upward, and a cross section of the test groove in a vertical height direction perpendicular to the tool body gradually increases upward along the vertical height direction; A water flow trough is provided at the bottom of the test groove, the depth of the water flow trough gradually increases along a 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; 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.

2. The micro speaker test fixture according to claim 1, 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.

3. The micro speaker test fixture according to claim 2, 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.

4. The micro speaker test fixture according to claim 3, characterized in that: The tool body is also provided with a first shielding portion, and the first shielding portion is embedded in the other end opening of the first sub-channel.

5. The micro speaker test fixture according to claim 2, characterized in that: The second sub-channel includes a first channel branch and a second channel branch, 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.

6. The micro speaker test fixture according to claim 5, characterized in that: The tool body is also provided with a second shielding portion, and the second shielding portion is embedded in the opening of the second channel branch.

7. 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.

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

9. The micro speaker test fixture according to claim 8, 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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