Miniature loudspeaker test tool
By designing a micro speaker test tool with two sound output channels, the problem that the existing test tool cannot accurately simulate the working environment of the micro speakers is solved, and more accurate test data acquisition is achieved.
Patent Information
- Application Number
- CN202421616352.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing micro speaker testing tooling cannot better simulate the working environment of the micro speakers in the entire machine, resulting in inaccurate test data.
A micro speaker testing tool is designed, including a baffle, a cover plate and a base. The cover plate and the base are surrounded to form a receptacle cavity. A plurality of probes are provided on the cover plate, and a sound outlet cavity and two sound outlet channels are provided on the base, which correspond to the speaker mode and the receiver mode respectively.
By setting two sound output channels, the working environment of the micro speakers in the entire machine can be more accurately simulated, and the audio signals in both modes can be obtained, which improves the accuracy of the test data.
Smart Images
Figure CN222967080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of test equipment, in particular to a test tooling for a micro speaker. Background Art
[0002] With the popularization of smart phones and mobile devices, as a key component for sound output, users have higher and higher requirements for the performance and quality of micro speakers. During the R & D and production stages, it is usually necessary to test various performances of micro speakers, such as airtightness, acoustic performance, and listening effect. However, the existing test toolings for micro speakers cannot well simulate the working environment of micro speakers in the whole machine, resulting in inaccurate test data. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a test tooling for a micro speaker to solve the problem that the existing test tooling for a micro speaker cannot well simulate the working environment of the micro speaker in the whole machine, resulting in inaccurate test data.
[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:
[0005] A test tooling for a micro speaker, which includes a baffle plate, a cover plate and a base arranged on the baffle plate. The cover plate is arranged on the base, and the cover plate and the base enclose to form a containing cavity. A plurality of probes are arranged on the cover plate, and one end of each probe extends into the containing cavity; wherein, an out-sound cavity communicated with the containing cavity and a first out-sound channel and a second out-sound channel corresponding to the out-sound cavity are arranged on the base. The first out-sound channel is provided with a first out-sound port, and the second out-sound channel is provided with a second out-sound port.
[0006] Further, in the test tooling for a micro speaker of the utility model, the first out-sound port is arranged on the side wall of the base far away from the baffle plate, and the second out-sound port is arranged on the bottom surface of the base far away from the cover plate.
[0007] Further, in the test tooling for a micro speaker of the utility model, the second out-sound channel includes a first sub-channel and a second sub-channel which are communicated with each other; the first sub-channel extends along the vertical height direction of the base, and the first sub-channel is communicated with the out-sound cavity; the second sub-channel extends along the horizontal length direction of the base.
[0008] Further, in the test tooling for a micro speaker of the utility model, a first sealing ring is arranged between the base and the cover plate, and the first sealing ring is arranged around the containing cavity.
[0009] Furthermore, in the micro speaker testing tooling of the present utility model, a first wire hole communicating with the probe is provided on the cover plate, and a second wire hole is provided on the base. The first wire hole and the second wire hole are coaxially arranged and communicate with each other.
[0010] Furthermore, in the micro speaker testing tooling of the present utility model, an installation groove is provided on the baffle plate, and an installation hole is provided at the bottom of the installation groove. At least part of the base and at least part of the cover plate are arranged in the installation hole.
[0011] Furthermore, in the micro speaker testing tooling of the present utility model, the base includes a first connecting plate and a second connecting plate connected to each other. The first connecting plate is arranged in the installation groove, and the second connecting plate passes through the installation hole and extends in a direction away from the first connecting plate.
[0012] Furthermore, in the micro speaker testing tooling of the present utility model, a second sealing ring is further included, and the second sealing ring is arranged between the first connecting plate and the baffle plate.
[0013] Furthermore, in the micro speaker testing tooling of the present utility model, a clamping member arranged on the baffle plate is further included, and one end of the clamping member abuts against the first connecting plate.
[0014] Furthermore, in the micro speaker testing tooling of the present utility model, a sealing gasket is further included, and the sealing gasket is arranged at the bottom of the accommodating cavity.
[0015] The beneficial effects of the present utility model are as follows: The micro speaker is arranged in the accommodation cavity formed by enclosing the cover plate and the base. An out-sound cavity communicating with the accommodation cavity is provided on the base, and two out-sound channels corresponding to the out-sound cavity (i.e., the first out-sound channel and the second out-sound channel) and two corresponding out-sound ports (i.e., the first out-sound port and the second out-sound port) are provided. It should be noted that the first out-sound channel is the out-sound channel in the speaker mode, and the second out-sound channel is the out-sound channel in the receiver mode. That is to say, the present utility model sets the first out-sound channel and the second out-sound channel in the micro speaker test tooling. By setting two out-sound channels, the working environment of the micro speaker installed in a complete machine device such as a smart terminal can be more accurately simulated, that is, it is closer to imitating the working conditions of the micro speaker in the complete machine (the micro speaker has two different modes in the complete machine). In actual use, signals are sent to the micro speaker in the accommodation cavity through the probe, and audio signals are collected outside the first out-sound port and the second out-sound port of the test tooling, and audio signals in two different modes can be obtained. Compared with the existing test tooling that only sets one out-sound channel to obtain audio signals in one mode, the present utility model can obtain more accurate test data, so as to more accurately obtain the performance of the micro speaker in the complete machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the micro speaker test tooling according to the present utility model from a perspective in an embodiment;
[0017] Figure 2 is a schematic structural diagram of the micro speaker test tooling according to the present utility model from another perspective in an embodiment;
[0018] Figure 3 is an exploded view of the structure of the micro speaker test tooling according to the present utility model from yet another perspective in an embodiment;
[0019] Figure 4 is an exploded view of the structure of the micro speaker test tooling according to the present utility model from still another perspective in an embodiment;
[0020] Figure 5 is Figure 1 a schematic structural diagram of the base in the micro speaker test tooling shown;
[0021] Figure 6 is Figure 5 a partial enlarged view of part A of the base shown;
[0022] Figure 7 is Figure 5 a schematic structural diagram of the base from another perspective shown;
[0023] Figure 8 The Figure 7 cross-sectional view of the a-a section of the base shown;
[0024] Figure 9 The Figure 7 cross-sectional view of the b-b section of the base shown;
[0025] Figure 10 The Figure 7 cross-sectional view of the c-c section of the base shown.
[0026] Label description:
[0027] 1. Baffle; 11. Installation groove; 12. Installation hole;
[0028] 2. Cover plate; 21. Probe; 22. First wire hole;
[0029] 3. Base; 31. Sound output cavity; 32. First sound output port; 33. Second sound output port; 34. First sub-channel; 35. Second sub-channel; 36. Second wire hole; 37. First connecting plate; 38. Second connecting plate; 39. Groove;
[0030] 4. First sealing ring;
[0031] 5. Second sealing ring;
[0032] 6. Clamping member;
[0033] 7. Sealing gasket;
[0034] 8. Accommodation cavity;
[0035] 9. Dust-proof net. Specific implementation manner
[0036] To describe in detail the technical content, achieved purpose and effect of the present utility model, the following is described in conjunction with the implementation manner and with reference to the drawings.
[0037] Please refer to Figures 1 to 10 , the present utility model designs a micro-speaker test tooling, which includes a baffle 1, a cover plate 2 and a base 3 arranged on the baffle 1. The cover plate 2 is arranged on the base 3. The cover plate 2 and the base 3 enclose to form an accommodation cavity 8, and a plurality of probes 21 are arranged on the cover plate 2, and one end of the probe 21 extends into the accommodation cavity 8; wherein, the base 3 is provided with a sound output cavity 31 communicated with the accommodation cavity 8 and a first sound output channel and a second sound output channel corresponding to the sound output cavity 31. The first sound output channel is provided with a first sound output port 32, and the second sound output channel is provided with a second sound output port 33.
[0038] In practical applications, a micro speaker can be applied to mobile devices such as mobile phones. To advocate stereo sound, a micro speaker can be set in devices such as mobile phones. This micro speaker can be used as both a receiver and an external speaker. Specifically: in the case of making or receiving calls, etc., devices such as mobile phones usually switch to the receiver mode to provide a better call experience. When devices such as mobile phones need to play external audio, etc., they usually switch to the speaker mode, and the micro speaker and a BOX (such as an audio system) form a stereo system. To test the acoustic performance of the micro speaker in the above two modes, the present utility model provides the following micro speaker test tooling for testing, so as to better test and simulate the situation of the micro speaker in the whole machine, specifically as follows:
[0039] In the present utility model, the micro speaker is arranged in the accommodation cavity formed by enclosing a cover plate and a base. An out-sound cavity communicating with the accommodation cavity is provided on the base, and two out-sound channels corresponding to the out-sound cavity (i.e., the first out-sound channel and the second out-sound channel) and two corresponding out-sound ports (i.e., the first out-sound port and the second out-sound port) are provided. It should be noted that the first out-sound channel is the out-sound channel in the speaker mode, and the second out-sound channel is the out-sound channel in the receiver mode. That is to say, the present utility model sets the first out-sound channel and the second out-sound channel in the micro speaker test tooling. By setting two out-sound channels, the working environment of the micro speaker installed in a whole machine device such as a smart terminal can be more accurately simulated, that is, it is closer to imitating the working and using situation of the micro speaker in the whole machine (the micro speaker has two different modes in the whole machine). In actual use, a signal is sent to the micro speaker in the accommodation cavity through a probe, and audio signals are collected outside the first out-sound port and the second out-sound port of the test tooling, so that audio signals in two different modes can be obtained. Compared with the existing test tooling that only sets one out-sound channel to obtain audio signals in one mode, the present utility model can obtain more accurate test data, and thus more accurately obtain the performance of the micro speaker in the whole machine.
[0040] Furthermore, in the micro speaker test tooling of the present utility model, the first out-sound port 32 is arranged on the side wall of the base 3 away from the baffle, and the second out-sound port 33 is arranged on the bottom surface of the base 3 away from the cover plate 2.
[0041] In the above technical solution of the present utility model, by arranging the first out-sound port 32 and the second out-sound port 33 at different positions on the base 3, it is ensured that audio signals transmitted by the micro speaker in different modes can be obtained through the first out-sound port 32 and the second out-sound port 33 at different positions.
[0042] Further, in the micro speaker test tooling of the present utility model, the second sound outlet channel includes a first sub-channel 34 and a second sub-channel 35 that communicate with each other; the first sub-channel 34 extends along the vertical height direction of the base 3, and the first sub-channel 34 communicates with the sound outlet cavity 31; the second sub-channel 35 extends along the horizontal length direction of the base 3.
[0043] In the above technical solution of the present utility model, the sound outlet cavity 31, the first sub-channel 34 and the second sub-channel 35 can more accurately simulate the working environment (i.e., the sound outlet pipe) of the micro speaker installed in the whole machine in the receiver mode, so as to more accurately obtain the test data of the micro speaker in the receiver mode.
[0044] Further, in the micro speaker test tooling of the present utility model, a first sealing ring 4 is provided between the base 3 and the cover plate 2, and the first sealing ring 4 is arranged around the accommodating cavity 8.
[0045] In the above technical solution of the present utility model, setting a first sealing ring 4 (such as foam) around the accommodating cavity 8 can improve the sealing performance of the accommodating cavity 8, ensure the closure of the test environment, avoid the interference of the external environment, and improve the accuracy of the test.
[0046] Further, in the micro speaker test tooling of the present utility model, a first wire hole 22 communicating with the probe 21 is provided on the cover plate 2, and a second wire hole 36 is provided on the base 3. The first wire hole 22 and the second wire hole 36 are coaxially arranged and communicate with each other.
[0047] In the above technical solution of the present utility model, by providing the mutually communicating first wire hole 22 and second wire hole 36, wherein the first wire hole 22 communicates with the through hole for placing the probe 21, the channel formed by the first wire hole 22 and the second wire hole 36 can be used to place the wire connecting the probe 21, so as to lead the wire of the probe 21 to the external space, and then so that a corresponding signal can be sent to the micro speaker through the probe 21 subsequently.
[0048] Further, in the micro speaker test tooling of the present utility model, an installation groove 11 is provided on the baffle 1, and an installation hole 12 is provided at the bottom of the installation groove 11. At least part of the base 3 and at least part of the cover plate 2 are arranged in the installation hole 12.
[0049] In the above technical solution of the present utility model, by providing mounting holes 12 at the bottom of the mounting groove 11, the base 3 and the cover plate 2 can be quickly arranged on the baffle 1 through the mounting holes 12, and the cover plate 2 can be quickly arranged on the base 3 to limit and position the two (such as in the vertical height direction), which is beneficial to improving the assembly efficiency.
[0050] Further, in the micro-speaker test fixture of the present utility model, the base 3 includes a first connecting plate 37 and a second connecting plate 38 connected to each other. The first connecting plate 37 is arranged in the mounting groove 11, and the second connecting plate 38 passes through the mounting hole 12 and extends in a direction away from the first connecting plate 37.
[0051] In the above technical solution of the present utility model, by arranging the first connecting plate 37 in the mounting groove 11 and passing the second connecting plate 38 through the mounting hole 12 and extending in a direction away from the first connecting plate 37, the base 3 can be correctly and effectively arranged on the baffle 1.
[0052] Further, in the micro-speaker test fixture of the present utility model, it further includes a second sealing ring 5, and the second sealing ring 5 is arranged between the first connecting plate 37 and the baffle 1.
[0053] In the above technical solution of the present utility model, arranging the second sealing ring 5 between the first connecting plate 37 and the baffle 1 helps to ensure the sealing of the test environment, avoid interference, and improve the accuracy of the test. It should be noted that the material of the second sealing ring 5 can be foam.
[0054] Further, in the micro-speaker test fixture of the present utility model, it further includes a clamping member 6 arranged on the baffle 1, and one end of the clamping member 6 abuts against the first connecting plate 37.
[0055] In the above technical solution of the present utility model, by providing two clamping members 6 and abutting the two clamping members 6 against the first connecting plate 37, the base 3 can be fixed on the baffle 1, effectively preventing the base 3 from moving.
[0056] Further, in the micro-speaker test fixture of the present utility model, it further includes a sealing gasket 7, and the sealing gasket 7 is arranged at the bottom of the accommodating cavity 8.
[0057] In the above technical solution of the present utility model, arranging the sealing gasket 7 at the bottom of the accommodating cavity 8 ensures the sealing of the test environment, avoids interference, and improves the accuracy of the test. It should be noted that the sealing gasket 7 can be a sealing gasket 7 made of foam.
[0058] Please refer to Figures 1 to 10, Embodiment 1 of the present utility model is: a micro-speaker test tooling for performing corresponding performance tests on a micro-speaker, such as acoustic performance tests. The micro-speaker test tooling includes a baffle 1, a cover plate 2, a base 3, and a clamping member 6. Among them, the cover plate 2 and the base 3 are both arranged on the baffle 1, the cover plate 2 is arranged on the base 3, the clamping member 6 is fixed on the baffle 1, and one end of the clamping member 6 abuts against the base 3. The following will be specifically introduced in combination with Figures 1 to 10 these components.
[0059] As Figure 3 well as Figure 4 shown, a rectangular installation groove 11 is provided on the baffle 1, and an installation hole 12 is provided at the bottom of the installation groove 11. The installation hole 12 includes two holes, one of which is used to clamp the cover plate 2, and the other is used to clamp the base 3. The base 3 includes a first connecting plate 37 and a second connecting plate 38 connected to each other. The second connecting plate 38 is vertically fixed on the first connecting plate 37, and the shape of the base 3 is T-shaped. The cover plate 2 is arranged on the second connecting plate 38. The cover plate 2 is in the shape of a cuboid, and two surfaces of the cover plate 2 respectively abut against the first connecting plate 37 and the second connecting plate 38. It should be noted that the first connecting plate 37 is arranged in the installation groove 11, and the second connecting plate 38 passes through the installation hole 12 and extends in a direction away from the first connecting plate 37. In addition, a second sealing ring 5 is provided at the bottom of the installation groove 11, and the second sealing ring 5 is arranged between the first connecting plate 37 and the baffle 1.
[0060] As Figure 4 shown, in actual use, in order to prevent the first connecting plate 37 placed in the installation groove 11 from moving in a direction away from the cover plate 2, two clamping members 6 are provided on the baffle 1. The two clamping members 6 are fixed on the baffle 1 by fixing members such as bolts, and one end of each of the two clamping members 6 abuts against the first connecting plate 37 to limit the first connecting plate 37 in the installation groove 11.
[0061] In this embodiment, two through holes are provided on the cover plate 2, and probes 21 are arranged in the two through holes. Correspondingly, two first wire holes 22 communicating with the through holes for placing the probes 21 are provided on the cover plate 2. Two second wire holes 36 are provided on the base 3. The first wire holes 22 and the second wire holes 36 are coaxially arranged and communicate with each other to form an external connection channel. Through this external connection channel, the wires of the probes 21 can be led out to the external space, so that the probes 21 can send corresponding signals to the micro-speaker.
[0062] As Figure 5 well as Figure 6As shown in the figure, a groove 39 with an upward opening is provided on the base 3, and the cover plate 2 is arranged on the groove 39 so that the cover plate 2 and the base 3 can enclose to form a receiving cavity 8. The receiving cavity 8 can be used to place the micro speaker to be tested. A sealing gasket 7 in the shape of a "four" character is provided at the bottom of the receiving cavity 8, and the micro speaker is arranged on the sealing gasket 7, and the micro speaker is connected to the probe 21 extending into the receiving cavity 8. A first sealing ring 4 in the shape of a ring rectangle is provided around the receiving cavity 8. The first sealing ring 4 is located between the second connecting plate 38 and the cover plate 2 in the vertical height direction to seal the receiving cavity 8. In addition, on the base 3, there is a sound passing cavity connected to the receiving cavity 8. The first part of the sound passing cavity is located at the bottom of the micro speaker, and the second part extends in a direction away from the baffle 1. The second part includes two channels. It should be noted that on the base 3, there are also a first sound outlet channel and a second sound outlet channel corresponding to the sound passing cavity. The first sound outlet channel is provided with five first sound outlet openings 32 arranged side by side, and the five first sound outlet openings 32 are all arranged on the side wall of the base 3 away from the baffle 1. A dust-proof net 9 is also provided at these five sound outlet openings. The second sound outlet channel is provided with a second sound outlet opening 33 in the shape of a long and narrow slit. The second sound outlet opening 33 is arranged on the bottom surface of the base 3 away from the cover plate 2. As Figures 7 to 10 shown, the second sound outlet channel includes a first sub-channel 34 and a second sub-channel 35 that are interconnected. The first sub-channel 34 extends along the vertical height direction of the base 3, and the first sub-channel 34 is connected to the sound outlet cavity 31; the second sub-channel 35 extends along the horizontal length direction of the base 3, and the second sub-channel 35 is a long and narrow slit-shaped channel.
[0063] In summary, the micro speaker testing tooling provided by the present utility model: sets a first sound outlet channel and a second sound outlet channel. Through the two sound outlet channels, the working environment (i.e., the sound outlet pipe) of the micro speaker installed in a complete machine device such as a smart terminal can be more accurately simulated, that is, it can more closely imitate the working conditions of the micro speaker in the complete machine (two different modes). During actual use, signals are sent to the micro speaker in the receiving cavity 8 through the probe 21, and audio signals are collected outside the first sound outlet opening 32 and the second sound outlet opening 33 of the testing tooling, and audio signals in two modes can be obtained. Compared with only obtaining audio signals in one mode, the present utility model can obtain more accurate test data.
[0064] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present utility model.
Claims
1. A micro speaker testing tool, characterized in that: It includes a baffle and a cover plate and a base arranged on the baffle, the cover plate is arranged on the base, the cover plate and the base together form a receiving cavity, and a plurality of probes are arranged on the cover plate, one end of the probes extends into the receiving cavity; wherein, a sound outlet cavity connected with the receiving cavity and a first sound outlet channel and a second sound outlet channel corresponding to the sound outlet cavity are arranged on the base, the first sound outlet channel is provided with a first sound outlet, and the second sound outlet channel is provided with a second sound outlet.
2. The micro speaker test fixture according to claim 1, characterized in that: The first sound outlet is arranged on a side wall of the base away from the baffle plate, and the second sound outlet is arranged on a bottom surface of the base away from the cover plate.
3. The micro speaker test fixture according to claim 1, characterized in that: The second sound output channel includes a first sub-channel and a second sub-channel that are interconnected; the first sub-channel extends along the vertical height direction of the base, and the first sub-channel is connected to the sound output cavity; the second sub-channel extends along the horizontal length direction of the base.
4. The micro speaker test fixture according to claim 1, characterized in that: A first sealing ring is disposed between the base and the cover plate, and the first sealing ring is disposed around the accommodating cavity.
5. The micro speaker test fixture according to claim 1, characterized in that: The cover plate is provided with a first wire hole connected to the probe, and the base is provided with a second wire hole. The first wire hole and the second wire hole are coaxially arranged and connected to each other.
6. The micro speaker test fixture according to claim 1, characterized in that: The baffle plate is provided with a mounting groove, the bottom of the mounting groove is provided with a mounting hole, and at least a portion of the base and at least a portion of the cover plate are arranged in the mounting hole.
7. The micro speaker testing tool according to claim 6, characterized in that: The base includes a first connecting plate and a second connecting plate connected to each other, the first connecting plate is arranged in the mounting groove, and the second connecting plate passes through the mounting hole and extends in a direction away from the first connecting plate.
8. The micro speaker testing tool according to claim 7, characterized in that: It also includes a second sealing ring, which is arranged between the first connecting plate and the baffle.
9. The micro speaker testing tool according to claim 7, characterized in that: It also includes a clamping member arranged on the baffle, one end of the clamping member is in conflict with the first connecting plate.
10. The micro speaker testing tool according to claim 1, characterized in that: It also includes a sealing gasket, which is arranged at the bottom of the accommodating cavity.