Unidirectional microphone batch test equipment

Abstract

The invention is suitable for the technical field of microphone detection, and provides a unidirectional microphone batch tester, which comprises a bottom box and a test tube arranged on the bottom box, one end of the test tube is provided with a sound source module, and the test tube is provided with a detection port; the executing mechanism comprises a rotating arm and a supporting pipe, the supporting pipe is rotationally installed on the bottom box, the rotating arm is arranged on the supporting pipe, and the supporting pipe is further provided with a multifunctional clamping assembly used for clamping a microphone and driving the microphone to rotate; the driving mechanism is used for driving the supporting pipe to rotate, and the driving mechanism is arranged in the bottom box, and through cooperative arrangement of the executing mechanism and the driving mechanism, the problems that in a traditional sampling inspection mode, the detection efficiency is low, and the requirement for batch rapid detection cannot be met are solved.

Description

Technical Field

[0001] The invention relates to the technical field of microphone detection, in particular to a batch tester for unidirectional microphones. Background Art

[0002] With the widespread use of modern electronic devices, unidirectional microphones, as a key audio input device, are widely used in a variety of electronic products, such as professional recording equipment, conferencing systems, live streaming equipment, and smartphones. Their unique directional characteristics effectively focus sound from a specific direction while reducing noise interference from other directions, thereby providing users with high-quality sound collection. However, with the rapid growth in market demand for unidirectional microphones, microphone manufacturers are facing tremendous production pressure. In the traditional unidirectional microphone production process, the performance testing process of the microphone presents many urgent problems that need to be solved.

[0003] Traditional testing methods for microphones are mostly spot-checked, not every unit tested. However, current customer demands for a 100% pass rate for every product necessitate testing of every single unit. Traditional spot-checking methods are inefficient and cannot meet the demands for rapid batch testing. Therefore, in response to this situation, there is an urgent need for a unidirectional microphone batch tester to overcome these shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of the present invention is to provide a batch tester for unidirectional microphones, aiming to solve the problems in the above-mentioned background technology.

[0005] The present invention is achieved in that a batch tester for unidirectional microphones comprises: A bottom box and a test tube disposed on the bottom box, wherein a sound source module is disposed at one end of the test tube and a detection port is opened on the test tube; An actuator, the actuator comprising a rotary arm and a support tube, the support tube being rotatably mounted on the base box, the rotary arm being disposed on the support tube, and the support tube being further provided with a multifunctional clamping assembly for clamping the microphone and driving the microphone to rotate; And a driving mechanism for driving the support tube to rotate, wherein the driving mechanism is arranged in the bottom box.

[0006] As a further solution of the present invention: two groups of the actuators are provided, and the two groups of actuators are respectively located on both sides of the detection port.

[0007] As a further solution of the present invention: the bottom box is further provided with a limiting column for limiting the position of the rotary arm, and the rotary arm is further provided with a magnet for adsorbing the limiting column.

[0008] As a further solution of the present invention: a handle is provided on the rotary arm.

[0009] As a further solution of the present invention: the multifunctional clamping assembly includes: Rotating a support shaft mounted on a rotary arm, wherein the rotary arm is further provided with a first motor for driving the support shaft to rotate; and a clamp for fixing the microphone, wherein the clamp is arranged at the end of the supporting shaft.

[0010] As a further solution of the present invention: the first motor is a stepping motor.

[0011] As a further solution of the present invention: two photoelectric sensor switches are further provided on the limit column.

[0012] As a further solution of the present invention: a limiting plate capable of being attracted by a magnet is further provided on the surface of the test tube, and a circular hole corresponding to the detection port is opened on the limiting plate.

[0013] As a further solution of the present invention: the driving mechanism includes: A first rotating shaft is rotatably mounted in the bottom box, and a second motor for driving the first rotating shaft to rotate is also provided in the bottom box; A driving tube is rotatably mounted on the top of the bottom box, wherein the driving tube is fixedly connected to the supporting tube, and the driving tube is connected to the first rotating shaft via a first linkage member.

[0014] The cam is connected to the first rotating shaft by a second link, and the cam is connected to the first rotating shaft by a second link.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The coordination of two sets of actuators and drive mechanisms avoids the low efficiency of traditional spot-checking. The speed at which workers install and remove microphones roughly matches the speed of inspection, enabling rapid batch inspection. The magnet on the arm can attract the limit column and limit plate to ensure the accurate and stable detection position of the microphone. Combined with the stepper motor, it can stop and detect at 0° and 180° according to preset instructions to obtain the performance data of the directional microphone. The driving mechanism adopts mechanical drive. The second motor drives the first rotating shaft to rotate, and the linkage part drives the driving tube and the second rotating shaft to rotate, and then drives the support tube and the rotary arm to rotate to realize the switching of the detection state, which reduces the burden on the staff and improves the detection efficiency. The rotation of the driving block drives the translation frame and the piston plate to move back and forth in the compression box, sucking the gas through the air inlet pipe and passing through the guide tube, air guide ring, driving tube, support tube, and rotary arm cavity, and finally spraying it from the nozzle to the microphone in the fixture, which can effectively remove dust and other impurities and improve detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0018] Figure 2 Schematic diagram of the structure of the actuator in the present invention.

[0019] Figure 3 Schematic diagram of the internal structure of the bottom box of the present invention.

[0020] Figure 4 Schematic diagram of the structure of the driving mechanism of the present invention.

[0021] Figure 5 for Figure 4 Schematic diagram of the upward-looking structure.

[0022] Figure 6 Schematic diagram of the internal structure of the compression box in the present invention.

[0023] Figure 7 Schematic diagram of the structure of the driving component in the present invention.

[0024] Figure 8 Schematic diagram of the internal structure of the air guide ring in the present invention.

[0025] In the accompanying drawings: 1-sound source module, 2-test tube, 3-bottom box, 4-rotating arm, 5-support tube, 6-detection port, 7-limiting plate, 8-handle, 9-first motor, 10-spray hole, 11-limiting column, 12-compression box, 13-drive tube, 14-first rotating shaft, 15-second motor, 16-conduit, 17-first linkage, 18-inlet pipe, 19-air guide ring, 20-push-pull rod, 21-translation frame, 22-second linkage, 23-drive block, 24-second rotating shaft, 25-guide wheel, 26-connecting rod, 27-piston plate, 28-preload spring, 29-support column, 30-opening, 31-clamp, 32-support shaft. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] The present invention will be further explained below with reference to specific embodiments.

[0030] See also Figures 1-8 The embodiment of the present invention provides a batch tester for unidirectional microphones, comprising: A bottom box 3 and a test tube 2 provided on the bottom box 3, wherein a sound source module 1 is provided at one end of the test tube 2, and a detection port 6 is provided on the test tube 2; An actuator, comprising a rotary arm 4 and a support tube 5, wherein the support tube 5 is rotatably mounted on the base box 3, the rotary arm 4 is disposed on the support tube 5, and the support tube 5 is further provided with a multifunctional clamping assembly for clamping the microphone and driving the microphone to rotate; and a driving mechanism for driving the support tube 5 to rotate, wherein the driving mechanism is arranged in the bottom box 3; There are two groups of actuators, and the two groups of actuators are respectively located on both sides of the detection port 6; wherein the driving mechanism is also correspondingly provided with two groups in the bottom box 3; The bottom box 3 is further provided with a limiting post 11 for limiting the position of the rotary arm 4, and the rotary arm 4 is further provided with a magnet for attracting the limiting post 11. The surface of the test tube 2 is further provided with a limiting plate 7 that can be attracted by the magnet, and the limiting plate 7 is provided with a circular hole corresponding to the detection port 6; The swing arm 4 is provided with a handle 8, which is convenient for the staff to manually pull the swing arm 4 to rotate around the support tube 5; The multifunctional clamping assembly comprises: The support shaft 32 is rotatably mounted on the rotary arm 4. The rotary arm 4 is further provided with a first motor 9 for driving the support shaft 32 to rotate; and a fixture 31 for fixing the microphone, the fixture 31 being disposed at the end of the support shaft 32; wherein the fixture 31 has an elastic contact point that elastically contacts the microphone, making the microphone easy to take and put away, and the fixture 31 can be made of existing publicly available technology; The first motor 9 is a stepping motor; Two photoelectric sensors are also provided on the limit column 11; the photoelectric sensor switch located at the bottom is used to detect the return of the stepping motor, and the photoelectric sensor switch located at the top is used to detect the return of the swing arm 4. There is a corresponding detection block (not shown in the figure) on the upper part of the swing arm 4 and the position of the photoelectric switch detection hole.

[0031] In an embodiment of the present invention, the sound source module 1 is a speaker, and the sound is constrained by the test tube 2 and conducted from one end to the other end, which can be regarded as a directional sound source. The microphone is placed in the middle of the long tube through the detection port 6, and the sound pickup direction is toward the sound source direction for detection as directional sensitivity, and then rotated 180° back to the sound source direction for detection again, which is reverse sound pickup sensitivity, and the performance data of the directional microphone can be obtained. The equipment for installing the microphone is designed as two rotary arms 4, each with a clamp 31 as a clamping tool, which clamps the microphone and detects the data. The rotary arm 4 rotates to make the microphone enter the detection port 6, and the rotary arm 4 is rotated. The magnet is adsorbed on the limit plate 7 to ensure that the position is accurate and does not move. The stepper motor on the rotary arm 4 stays at two angles of 0° and 180° according to the preset instructions to detect the microphone signal. After the detection is completed, the rotary arm 4 is rotated to drive the other rotary arm 4 with the microphone installed to rotate for detection. The speed at which the worker installs the microphone to be detected and removes the detected microphone basically matches the detection speed, which can achieve rapid detection. Compared with the existing technology, the present invention avoids the problem of low detection efficiency in the traditional random inspection mode and inability to meet the needs of batch rapid detection through the coordinated setting of the actuator and the drive mechanism.

[0032] In one embodiment of the present invention, see Figures 1-8 , the driving mechanism includes: A first rotating shaft 14 is rotatably mounted in the bottom box 3 , and a second motor 15 is further provided in the bottom box 3 for driving the first rotating shaft 14 to rotate; The drive tube 13 is rotatably mounted on the top of the bottom box 3 . The drive tube 13 is fixedly connected to the support tube 5 , and the drive tube 13 is connected to the first rotating shaft 14 via a first linkage 17 . A second rotating shaft 24 is also rotatably installed in the bottom box 3, a driving block 23 is fixedly installed on the second rotating shaft 24, and the second rotating shaft 24 is connected to the first rotating shaft 14 through a second linkage 22. Four groups of translation frames 21 are also slidably installed in the bottom box 3, and the four groups of translation frames 21 of the swing arm are rotatably installed with support columns 29, and the support columns 29 are provided with guide wheels 25 that contact the side of the driving block 23. The multiple groups of support columns 29 are interconnected by multiple groups of connecting rods 26. A compression box 12 is also provided in the bottom box 3, and four groups of compression boxes 12 are provided. A piston plate 27 is slidably installed in each of the four groups of compression boxes 12. The piston plate 27 is connected to the translation frame 21 through a push-pull rod 20, and any two groups of compression boxes 12 are also provided with a pre-tightening spring 28 for elastically pressing the piston plate 27. The compression box 12 is also connected to the air intake pipe 18 and the guide tube 16 respectively. An air guide ring 19 is rotatably installed on the drive tube 13, and the air guide ring 19 is connected to the guide tube 16. An opening 30 connected to the air guide ring 19 is provided on the side wall of the drive tube 13. A cavity connected to the support tube 5 is provided in the rotary arm 4, and a spray hole 10 connected to the cavity is provided on the rotary arm 4, and the spray direction of the spray hole 10 is toward the clamp 31.

[0033] In this embodiment, the second linkage 22 and the first linkage 17 can both adopt a combined structure of a pulley and a transmission belt, and the diameter of the pulley installed on the driving pipe 13 in the first linkage 17 is larger than the diameter of the pulley installed on the first rotating shaft 14. The connection between the intake pipe 18 and the compression box 12 and the connection between the conduit 16 and the compression box 12 are both provided with a one-way valve. The second motor 15 drives the first rotating shaft 14 to rotate, and utilizes the first linkage 17 and the second linkage 22 to respectively drive the driving pipe 13 and the second rotating shaft 24 to rotate. When the speed of the first rotating shaft 14 is fixed, the speed of the driving pipe 13 is much smaller than the speed of the second rotating shaft 24, so that in the process of the driving pipe 13 driving the support pipe 5 to rotate, the second rotating shaft 24 can rotate multiple times, and the support pipe 5 can drive the swing arm 4 to rotate, thereby realizing the switching of the detection state. The mechanical drive method can effectively reduce the working time. The burden on personnel is reduced and the detection efficiency can be improved. The limiting effect of the connecting rod 26 can make the guide wheel 25 close to the side of the driving block 23, and then in the process of the driving block 23 following the rotation of the second rotating shaft 24, the translation frame 21 can be driven to move back and forth in the bottom box 3. The translation frame 21 can drive the piston plate 27 to move back and forth in the compression box 12 by cooperating with the push-pull rod 20, so that the gas can be sucked into the compression box 12 through the air inlet pipe 18, and the gas in the compression box 12 is sent into the air guide ring 19 through the conduit 16. The gas in the air guide ring 19 enters the support tube 5 through the driving tube 13, and enters the cavity of the rotary arm 4 through the support tube 5, and finally is sprayed to the clamp 31 through the nozzle 10. When a microphone is fixed in the clamp 31, the gas sprayed from the nozzle 10 can effectively remove dust and other impurities that may adhere to the microphone, thereby effectively improving the detection accuracy of the microphone.

[0034] In summary, the working principle of the present invention is: The sound source module 1 is a speaker, and the sound is constrained by the test tube 2 and conducted from one end to the other end, which can be regarded as a directional sound source. The microphone is placed in the middle of the long tube through the detection port 6, and the sound pickup direction is toward the sound source direction for detection as directional sensitivity, and then rotated 180 degrees back to the sound source direction for detection again, which is the reverse sound pickup sensitivity, and the performance data of the directional microphone can be obtained. The equipment for installing the microphone is designed as two swing arms 4, each with a clamp 31 as a clamping tool, which clamps the microphone and detects the data. The swing arm 4 rotates to make the microphone enter the detection port 6, and the magnet on the swing arm 4 is adsorbed on the limit plate 7 to ensure that the microphone is in the correct direction. To ensure that the position is accurate and does not move, the stepper motor on the rotary arm 4 stays at two 0° and 180° angle positions according to the preset instructions to detect the microphone signal. After the detection is completed, the rotary arm 4 is rotated to drive the other rotary arm 4 with the microphone installed to rotate for detection. The speed at which the worker installs the microphone to be detected and removes the detected microphone is basically matched with the detection speed, so that fast detection can be achieved. Specifically, the second motor 15 drives the first shaft 14 to rotate, and the first linkage 17 and the second linkage 22 can respectively drive the drive tube 13 and the second shaft 24 to rotate. When the speed of the first shaft 14 is fixed Under the condition that the rotation speed of the driving tube 13 is much smaller than the rotation speed of the second rotating shaft 24, the second rotating shaft 24 can rotate multiple times during the process of the driving tube 13 driving the support tube 5 to rotate, and the support tube 5 can drive the swing arm 4 to rotate, thereby realizing the switching of the detection state. The mechanical drive mode can effectively reduce the burden on the staff and improve the detection efficiency. The limiting effect of the connecting rod 26 can make the guide wheel 25 close to the side of the driving block 23, and then in the process of the driving block 23 following the rotation of the second rotating shaft 24, it can drive the translation frame 21 to move back and forth in the bottom box 3, and the translation frame 21 passes through The coordinated arrangement with the push-pull rod 20 can drive the piston plate 27 to move back and forth in the compression box 12, so that the gas can be sucked into the compression box 12 through the air inlet pipe 18, and the gas in the compression box 12 is sent into the air guide ring 19 through the conduit 16. The gas in the air guide ring 19 enters the support tube 5 through the drive tube 13, and enters the cavity of the rotary arm 4 through the support tube 5, and finally is sprayed toward the fixture 31 through the nozzle 10. When a microphone is fixed in the fixture 31, the gas sprayed from the nozzle 10 can effectively remove dust and other impurities that may adhere to the microphone, thereby effectively improving the detection accuracy of the microphone.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A unidirectional microphone batch tester, comprising a bottom box (3) and a test tube (2) arranged on the bottom box (3), wherein a sound source module (1) is arranged at one end of the test tube (2), and a detection port (6) is opened on the test tube (2), characterized in that: Also includes: An actuator, the actuator comprising a rotary arm (4) and a support tube (5), the support tube (5) being rotatably mounted on the bottom box (3), the rotary arm (4) being arranged on the support tube (5), and the support tube (5) being further provided with a multifunctional clamping assembly for clamping a microphone and driving the microphone to rotate; And a driving mechanism for driving the support tube (5) to rotate, wherein the driving mechanism is arranged in the bottom box (3).

2. The unidirectional microphone batch tester according to claim 1, characterized in that: Two groups of the actuators are provided, and the two groups of actuators are respectively located on both sides of the detection port (6).

3. The unidirectional microphone batch tester according to claim 1, characterized in that: The bottom box (3) is further provided with a limiting column (11) for limiting the position of the rotary arm (4), and the rotary arm (4) is further provided with a magnet for adsorbing the limiting column (11).

4. The unidirectional microphone batch tester according to claim 1, characterized in that: A handle (8) is provided on the rotary arm (4).

5. The unidirectional microphone batch tester according to claim 1, characterized in that: The multifunctional clamping assembly comprises: A support shaft (32) is rotatably mounted on the rotary arm (4), wherein the rotary arm (4) is further provided with a first motor (9) for driving the support shaft (32) to rotate; and a clamp (31) for fixing the microphone, wherein the clamp (31) is arranged at the end of the support shaft (32).

6. The unidirectional microphone batch tester according to claim 5, characterized in that: The first motor (9) is a stepping motor.

7. The unidirectional microphone batch tester according to claim 3, characterized in that: Two photoelectric sensor switches are also provided on the limiting column (11).

8. The unidirectional microphone batch tester according to claim 3, characterized in that: The surface of the test tube (2) is further provided with a limiting plate (7) capable of being attracted by a magnet, and a circular hole corresponding to the detection port (6) is opened on the limiting plate (7).

9. The unidirectional microphone batch tester according to claim 5, characterized in that: The driving mechanism comprises: A first rotating shaft (14), the first rotating shaft (14) being rotatably mounted in the bottom box (3), and a second motor (15) for driving the first rotating shaft (14) to rotate is also provided in the bottom box (3); A driving tube (13) is rotatably mounted on the top of the bottom box (3), wherein the driving tube (13) is fixedly connected to the support tube (5), and the driving tube (13) is connected to the first rotating shaft (14) via a first linkage member (17).

10. The unidirectional microphone batch tester according to claim 9, characterized in that: A second rotating shaft (24) is rotatably mounted in the bottom box (3), a driving block (23) is fixedly mounted on the second rotating shaft (24), and the second rotating shaft (24) is connected to the first rotating shaft (14) via a second linkage (22). Four groups of translation frames (21) are slidably mounted in the bottom box (3), and support columns (29) are rotatably mounted on the translation frames (21) of the swing arm (4). The support columns (29) are provided with guide wheels (25) in contact with the side surfaces of the driving block (23). The multiple groups of support columns (29) are interconnected via multiple groups of connecting rods (26). A compression box (12) is also provided in the bottom box (3), and the compression box (12) is provided with four groups, four groups. A piston plate (27) is slidably installed in the compression box (12), and the piston plate (27) is connected to the translation frame (21) through a push-pull rod (20). The compression box (12) is also connected to an air inlet pipe (18) and a guide tube (16). An air guide ring (19) is rotatably installed on the drive tube (13), and the air guide ring (19) is connected to the guide tube (16). An opening (30) connected to the air guide ring (19) is provided on the side wall of the drive tube (13). A cavity connected to the support tube (5) is provided in the rotary arm (4), and a spray hole (10) connected to the cavity is provided on the rotary arm (4), and the spray direction of the spray hole (10) is toward the clamp (31).

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