Audio testing device

Abstract

The invention relates to the technical field of audio testing, and discloses an audio testing device which comprises a detection box and a testing device body, a transverse groove A is formed in the lower portion of the front end face of the detection box, the inner side of the transverse groove A is movably connected with a placing mechanism through a moving mechanism, and a groove is formed in the front of the upper end face of the transverse groove A; the problems that the relative position between a sound pickup and a test supporting plate is fixed, the compatibility is poor, an existing audio test device is inconvenient to overhaul and maintain the sound pickup, and the test result may be inaccurate after the existing audio test device is used for a long time are solved. According to the invention, the to-be-tested article can be fixed, and the relative position between the sound pickup and the to-be-tested product is adjusted through the rotation limiting mechanism, so that the sound pickup can accurately face the arrangement area of the loudspeaker, the test accuracy is improved, the sound pickup is convenient to disassemble and assemble, the sound pickup is convenient to maintain, and the sound pickup effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of audio testing, in particular to an audio testing device. Background Art

[0002] Electronic products such as mobile phones and tablets need to undergo relevant audio performance tests in a soundproof box through an audio test device before leaving the factory. The audio test device mainly includes a test support plate, a pickup, and a test module. The test support plate is used to position and fix the product to be tested; the pickup is fixed on the test support plate through a connecting rod and a support seat, and is used to collect the audio signal emitted by the product to be tested, and can send the audio signal to the test module so that the test module can detect the audio signal.

[0003] In the related art, since the sound output modes of the product to be tested may include back output (i.e., the speaker is arranged at the back of the product to be tested), front output (i.e., the speaker is arranged at the front of the product to be tested), and side output (i.e., the speaker is arranged at the side of the product to be tested), etc. Therefore, according to the different sound output modes of the product to be tested, different types of audio test devices need to be used to test the product to be tested, so that the microphone in the audio test device can accurately face the setting area of ​​the speaker in the product to be tested, so as to ensure that the microphone can effectively collect the audio signal emitted by the speaker.

[0004] However, in the audio test device in the related art, the relative position between the microphone and the test support plate is fixed, and generally only products with one sound output mode can be tested, and the compatibility is poor. In addition, the existing audio test device is not convenient for inspecting and maintaining the microphone, and the test results may be inaccurate after being used for a long time. Therefore, it does not meet the existing needs. We have proposed an audio test device. Summary of the invention

[0005] The object of the present invention is to provide an audio testing device to solve the problems that in the audio testing device of the related art proposed in the above background technology, the relative position between the microphone and the test support plate is fixed, generally only products with one sound output mode can be tested, the compatibility is poor, and the existing audio testing device is not convenient for inspecting and maintaining the microphone, and the test results may be inaccurate after a long period of use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an audio testing device, comprising a detection box and a testing device, a transverse groove A is provided below the front end surface of the detection box, the inner side of the transverse groove A is movably connected with a placing mechanism through a moving mechanism, a groove is provided in front of the upper end surface of the transverse groove A, the inner side of the groove is movably connected with a cover plate through an electric push rod A, an active cavity is provided behind the upper end surface of the cover plate, a linear slide rail is movably connected to the side of the active cavity through an electric push rod B, a slider is slidably connected below the linear slide rail, a rotating seat is installed on the lower end surface of the slider through a rotating limiting mechanism, the rotating limiting mechanism comprises a square block, a square groove is provided on the lower end surface of the square block, a CCD camera is installed in front of the top surface of the inner wall of the square groove, a mounting groove is provided on the lower end surface of the rotating seat, a mounting seat is movably connected to the inner side of the mounting groove through a detachable mechanism, a pickup is installed on the lower end surface of the mounting seat, an opening is provided on the rear end surface of the detection box, and a single door is installed on the inner side of the opening.

[0007] Preferably, the placement mechanism includes a placement plate, a storage groove is provided in the middle of the upper end surface of the placement plate, a through groove A is provided on the front end surface of the placement plate, strip grooves A are provided on both sides of the upper end surface of the placement plate, a connecting shaft is provided in the middle of the strip groove A, a threaded rod A is installed on the front and rear end surfaces of the connecting shaft, a threaded plate is sleeved on the outer surface of the threaded rod A, and a vertical plate is fixedly connected to the upper end surface of the threaded plate.

[0008] Preferably, a fixing plate is installed on one side of the outer surface of the vertical plate, a threaded hole is penetrated through the upper end surface of the fixing plate, a screw rod is connected to the inner side of the threaded hole through a thread, a pressure plate is rotatably connected to the lower side of the screw rod through a bearing, and a rubber pad A is fixedly connected to the lower end surface of the pressure plate.

[0009] Preferably, a motor C is installed behind the strip groove A through a motor cavity, the output end of the motor C is fixedly connected to the rear end face of one of the threaded rods A through a coupling, the front end face of the other threaded rod A is rotatably connected to the inner wall of the strip groove A through a bearing, and the thread directions of the two threaded rods A are opposite.

[0010] Preferably, the moving mechanism includes a threaded rod B, which is arranged on both sides of the upper end surface of the transverse groove A through a strip groove B, and a threaded block is sleeved on the outer surface of the threaded rod B. The upper end surface of the threaded block is fixedly connected to the rear of the lower end surface of the placing plate, and a motor A is installed behind the strip groove B through a cavity, and the output end of the motor A is fixedly connected to the rear end surface of the threaded rod B through a coupling, and the front end surface of the threaded rod B is rotatably connected to the inner wall of the strip groove B through a bearing.

[0011] Preferably, a shell is installed on the rear end face of the square block, a cross bar is provided on the inner side of the shell, pins are installed on the front and rear end faces of the rotating seat, and a motor B is installed on the front end face of the square block, the output end of the motor B is fixedly connected to the front end face of one of the pins through a coupling, the rear end face of the other pin is fixedly connected to the front end face of the cross bar, and the rear end face of the cross bar is rotatably connected to the inner surface of the shell through a bearing.

[0012] Preferably, the rear end face of the square block is provided with a through groove B, the outer surface fixing sleeve of the cross bar is provided with a fixing ring, the upper end face and the rear end face of the fixing ring are both provided with limiting holes, the upper end face of the shell is installed with an electric push rod C, the lower end face of the electric push rod C is installed with a limiting rod through a mounting plate, and the limiting rod is adapted to the limiting hole.

[0013] Preferably, the detachable mechanism includes a movable plate, which is arranged in front and behind the mounting groove through a strip groove C, and the movable plate is movably connected to the strip groove C through a spring, and plug plates are installed on the opposite sides of the outer surfaces of the two movable plates, and the front and rear end surfaces of the mounting seat are both provided with slots, the strip groove C is connected to the mounting groove through a connecting groove, the plug plate passes through the connecting groove, and the plug plate is adapted to the slot.

[0014] Preferably, positioning columns are installed at the four end corners of the upper end face of the mounting seat, positioning holes are provided at the four end corners of the upper end face of the mounting groove, and the positioning columns are snapped into the inner sides of the positioning holes, the upper end face of the storage groove is covered with a silicone pad, a card slot is provided in front of the upper end face of the transverse groove A, the card slot is adapted to the cover plate, a rubber pad B is covered below the outer surface of the cover plate, a transverse groove B is provided on the rear end face of the inner wall of the movable cavity, and the rear end face of the linear slide rail is snapped into the inner side of the transverse groove B.

[0015] Preferably, an observation window is installed on one side of the outer surface of the detection box, the rear end face of the detection box is connected to the test device via wire A, the pickup is connected to the wire A via wire B, a display screen is installed on the front end face of the test device, the CCD camera is electrically connected to the display screen, the single-leaf door is rotatably connected to the opening via a hinge, a rubber sealing strip is installed on the outer surface of the single-leaf door, and a handle is installed on the rear end face of the single-leaf door.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with a placement mechanism. First, the electric push rod A is controlled to retract the cover plate into the inner side of the groove. Then, the placement mechanism is moved forward by the moving mechanism and extends out of the inner side of the horizontal groove A. The object to be tested is placed in the placement groove of the placement plate, so that the back of the object with rear sound is facing upward, the front of the object with front sound is facing upward, and the object with side sound is placed with the speaker facing forward. Then, the motor C is controlled to make the motor C work and drive the threaded rod A to rotate. The two threaded plates move in the direction of approaching or moving away at the same time, and after driving the vertical plate to move to the appropriate position, the screw rod is rotated to move downward on the inner side of the threaded hole, driving the pressing plate to move downward, pressing and holding the object to be tested stably, and then starting the audio test. The rotation limit mechanism and the linear slide rail are provided for the rear sound and front sound. If the sound is emitted, the pickup can be moved to the top of the back and front sound-emitting items to be tested by controlling the linear slide rail. If the sound is emitted from the side, the electric push rod C can be controlled to move the limit rod upward to release the limit on the fixed collar, and then the switch of the motor B can be controlled to rotate the pin shaft to drive the rotating seat to rotate 90°, so that the pickup rotates 90° counterclockwise, and then the electric push rod C can be controlled to insert the limit rod into the inner side of another limit hole to limit the fixed collar and receive sound from the speaker on the side. The present invention can fix the item to be tested, and adjust the relative position between the pickup and the product to be tested by rotating the limit mechanism, so that the pickup can accurately face the setting area of ​​the speaker in the product to be tested, thereby improving the accuracy of the test.

[0018] 2. The present invention is provided with an opening, a single door, a mounting seat, a mounting slot, and a detachable mechanism. When the pickup needs to be maintained, the single door can be opened, and the slider can be moved to the opening by controlling the linear slide rail, and then the two movable plates are pulled outward at the same time. The movement of the movable plate drives the plug plate to move, and the plug plate leaves the inner side of the slot, releasing the limit on the mounting seat. The mounting seat can be removed from the inner side of the mounting slot, and the pickup can be removed from the bottom of the rotating seat and taken out from the opening for maintenance. The present invention facilitates the disassembly and assembly of the pickup, facilitates its maintenance, and ensures the pickup effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the placement mechanism of the present invention extending out;

[0021] Figure 3 It is a partial structural schematic diagram of the placement mechanism of the present invention;

[0022] Figure 4 It is a main cross-sectional view of the detection box of the present invention;

[0023] Figure 5It is a partial structural schematic diagram of the rotation limiting mechanism of the present invention;

[0024] Figure 6 It is a side sectional view of the rotation limiting mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the partial structure of the detachable mechanism of the present invention.

[0026] In the figure: 1, test box; 2, cover plate; 3, horizontal groove A; 4, test device; 5, placement mechanism; 501, vertical plate; 502, placement plate; 503, storage groove; 504, through groove A; 505, fixed plate; 506, pressure plate; 507, threaded plate; 508, threaded rod A; 509, connecting shaft; 510, strip groove A; 511, threaded hole; 512, screw rod; 6, electric push rod A; 7, groove; 8, card slot; 9, movable cavity; 10, linear slide rail; 11, opening; 12, single door; 13, moving mechanism; 1301, motor A; 1302, threaded block; 1303, threaded rod B; 1304, strip Slot B; 14, electric push rod B; 15, slider; 16, rotation limit mechanism; 1601, square block; 1602, pin shaft; 1603, through slot B; 1604, cross bar; 1605, shell; 1606, electric push rod C; 1607, limit rod; 1608, limit hole; 1609, fixing ring; 1610, motor B; 1611, square slot; 17, rotating seat; 18, pickup; 19, CCD camera; 20, mounting seat; 21, mounting slot; 22, detachable mechanism; 2201, spring; 2202, moving plate; 2203, plug-in plate; 2204, slot; 2205, strip slot C. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] The electric push rod A6 (model LBP40), linear guide rail 10 (model FSL40XY-S), motor A1301 (model 68KTYZ), electric push rod B14 (model ANT-35), electric push rod C1606 (model ANT-35), motor B1610 (model 68KTYZ), CCD camera (model RX100V) and motor C (model YEJ3-112M-4) mentioned in the present invention can all be purchased from the market or obtained through private customization.

[0029] See also Figures 1 to 7An embodiment of the present invention is as follows: an audio test device, comprising a test box 1 and a test device 4, a transverse groove A3 is provided below the front end surface of the test box 1, a placement mechanism 5 is movably connected to the inner side of the transverse groove A3 through a moving mechanism 13, a groove 7 is provided in front of the upper end surface of the transverse groove A3, a cover plate 2 is movably connected to the inner side of the groove 7 through an electric push rod A6, an active cavity 9 is provided behind the upper end surface of the cover plate 2, a linear guide rail 10 is movably connected to the side of the active cavity 9 through an electric push rod B14, a slider 15 is slidably connected to the lower side of the linear guide rail 10, and the slider 1 5 is provided with a rotating seat 17 through a rotating limiting mechanism 16, the rotating limiting mechanism 16 comprises a square block 1601, the lower end surface of the square block 1601 is provided with a square groove 1611, a CCD camera 19 is installed in front of the top surface of the inner wall of the square groove 1611, the lower end surface of the rotating seat 17 is provided with a mounting groove 21, the inner side of the mounting groove 21 is movably connected with a mounting seat 20 through a detachable mechanism 22, a pickup 18 is installed on the lower end surface of the mounting seat 20, and an opening 11 is provided on the rear end surface of the detection box 1, and a single door 12 is installed on the inner side of the opening 11.

[0030] Furthermore, the placement mechanism 5 includes a placement plate 502, a storage groove 503 is provided in the middle of the upper end surface of the placement plate 502, a through groove A504 is provided on the front end surface of the placement plate 502, strip grooves A510 are provided on both sides of the upper end surface of the placement plate 502, a connecting shaft 509 is provided in the middle of the strip groove A510, and a threaded rod A508 is installed on the front and rear end surfaces of the connecting shaft 509, and a threaded plate 507 is sleeved on the outer surface of the threaded rod A508, and the upper end surface of the threaded plate 507 is fixedly connected to the vertical plate 501, and the movement of the threaded plate 507 can drive the vertical plate 501 to move.

[0031] A fixing plate 505 is installed on one side of the outer surface of the vertical plate 501, and a threaded hole 511 is penetrated on the upper end surface of the fixing plate 505, and a screw rod 512 is connected to the inner side of the threaded hole 511 through a thread, and a pressure plate 506 is rotatably connected to the lower side of the screw rod 512 through a bearing, and a rubber pad A is fixedly connected to the lower end surface of the pressure plate 506. By rotating the screw rod 512, the screw rod 512 can move up and down on the inner side of the threaded hole 511, driving the pressure plate 506 to move up and down. The rubber pad A is provided to prevent the mobile phone from being crushed to the objects waiting to be measured.

[0032] A motor C is installed at the rear of the strip groove A510 through the motor cavity, and the output end of the motor C is fixedly connected to the rear end face of one of the threaded rods A508 through a coupling, and the front end face of the other threaded rod A508 is rotatably connected to the inner wall of the strip groove A510 through a bearing, and the thread directions of the two threaded rods A508 are opposite. The operation of the motor C can drive the threaded rod A508 to rotate, so that the two threaded plates 507 can move in the direction of moving away or closer at the same time.

[0033] Please continue reading Figures 1 to 7 The moving mechanism 13 of the present invention includes a threaded rod B1303, which is arranged on both sides of the upper end surface of the transverse groove A3 through a strip groove B1304. A threaded block 1302 is sleeved on the outer surface of the threaded rod B1303. The upper end surface of the threaded block 1302 is fixedly connected to the rear of the lower end surface of the placement plate 502. A motor A1301 is installed behind the strip groove B1304 through a cavity. The output end of the motor A1301 is fixedly connected to the rear end surface of the threaded rod B1303 through a coupling. The front end surface of the threaded rod B1303 is rotatably connected to the inner wall of the strip groove B1304 through a bearing. The motor A1301 can drive the threaded rod B1303 to rotate when it works, thereby driving the threaded block 1302 to move on the surface of the threaded rod B1303, driving the placement plate 502 to move, and extending out of the inner side of the transverse groove A3.

[0034] A shell 1605 is installed on the rear end face of the square block 1601, and a cross bar 1604 is arranged on the inner side of the shell 1605. Pins 1602 are installed on the front and rear end faces of the rotating seat 17. A motor B1610 is installed on the front end face of the square block 1601. The output end of the motor B1610 is fixedly connected to the front end face of one of the pins 1602 through a coupling, and the rear end face of the other pin 1602 is fixedly connected to the front end face of the cross bar 1604. The rear end face of the cross bar 1604 is rotatably connected to the inner surface of the shell 1605 through a bearing. The operation of the motor B1610 can drive the pin 1602 to rotate, drive the rotating seat 17 to rotate, and drive the cross bar 1604 to rotate at the same time.

[0035] The rear end face of the square block 1601 is provided with a through groove B1603, the outer surface of the cross bar 1604 is fixedly sleeved with a fixing ring 1609, the upper end face and the rear end face of the fixing ring 1609 are both provided with limiting holes 1608, the upper end face of the shell 1605 is installed with an electric push rod C1606, and the lower end face of the electric push rod C1606 is installed with a limiting rod 1607 through a mounting plate, the limiting rod 1607 is adapted to the limiting hole 1608, the rotation of the cross bar 1604 can drive the fixing ring 1609 to rotate, the limiting rod 1607 can be stuck in the inner side of the limiting hole, to limit the fixing ring 1609, and then to limit the cross bar 1604.

[0036] Furthermore, the detachable mechanism 22 includes a movable plate 2202, which is arranged in front and behind the mounting groove 21 through a strip groove C2205. The movable plate 2202 and the strip groove C2205 are movably connected through a spring 2201. An insert plate 2203 is installed on the opposite side of the outer surfaces of the two movable plates 2202. Slots 2204 are arranged on the front and rear end surfaces of the mounting seat 20. The strip groove C2205 is connected to the mounting groove 21 through a connecting groove. The insert plate 2203 passes through the connecting groove, and the insert plate 2203 is adapted to the slot 2204. The insert plate 2203 can be inserted into the inner side of the slot 2204 to limit the mounting seat 20, and the insert plate 2203 can be driven to move by pulling the movable plate 2202.

[0037] In actual application, positioning columns are installed on the four end corners of the upper end face of the mounting seat 20, positioning holes are set on the four end corners of the upper end face of the mounting groove 21, and the positioning columns are inserted into the inner sides of the positioning holes. The upper end face of the storage groove 503 is paved with a silicone pad, and a card slot 8 is set in front of the upper end face of the transverse groove A3. The card slot 8 is adapted to the cover plate 2, and the lower part of the outer surface of the cover plate 2 is covered with a rubber pad B. The rear end face of the inner wall of the movable cavity 9 is provided with a transverse groove B, and the rear end face of the linear guide rail 10 is inserted into the inner side of the transverse groove B, so as to improve the stability of the mounting seat 20 in the mounting groove 21. The lower end of the cover plate 2 can be inserted into the inner side of the card slot 8, and the rubber pad B is provided to improve the sealing of the cover plate 2 on the inner side of the card slot 8, so as to avoid the influence of external noise on the test and improve the accuracy of the measurement data.

[0038] An observation window is installed on one side of the outer surface of the detection box 1, the rear end face of the detection box 1 is connected to the test device 4 through a wire A, the pickup 18 is connected to the wire A through a wire B, a display screen is installed on the front end face of the test device 4, a CCD camera 19 is electrically connected to the display screen, the single-leaf door 12 is rotatably connected to the opening 11 through a hinge, a rubber sealing strip is installed on the outer surface of the single-leaf door 12, and a handle is installed on the rear end face of the single-leaf door 12, so that the working conditions in the detection box 1 can be observed through the observation window. The image taken by the CCD camera 19 can be displayed on the display screen for the staff to view, and the single-leaf door 12 can be opened by the handle. By providing a rubber sealing strip, the sealing performance of the connection between the single-leaf door 12 and the opening 11 is improved.

[0039] When the audio testing device is in use, the power supply is first turned on, and the placement mechanism 5 is provided. The cover plate 2 is retracted into the inner side of the groove 7 by controlling the electric push rod A6, and then the placement mechanism 5 is moved forward by the moving mechanism 13 and extends out of the inner side of the horizontal groove A3, and the object to be tested is placed in the storage groove 503 of the placement plate 502, so that the back of the object with back sound is facing upward, the front of the object with front sound is facing upward, and the object with side sound is placed with the speaker facing forward, and then the motor C is controlled to drive the threaded rod A508 to rotate, and the two threaded plates 507 move in the direction of approaching or moving away at the same time, and after driving the vertical plate 501 to move to the appropriate position, the screw rod 512 is rotated to move downward on the inner side of the threaded hole 511, and the pressing plate 506 is driven to move downward, so as to press and hold the object to be tested stably.

[0040] Then start the audio test. By setting up a rotation limit mechanism 16 and a linear slide rail 10, for the back and front sound output, the linear slide rail 10 can be controlled to move the pickup 18 to just above the back and front sound output items to be tested. If the sound output is from the side, the electric push rod C1606 can be controlled to move the limit rod 1607 upward to release the limit on the fixed ring 1609, and then the switch of the motor B1610 can be controlled to rotate the pin 1602, driving the rotating seat 17 to rotate 90°, so that the pickup 18 rotates 90° counterclockwise, and then the electric push rod C1606 can be controlled to make the limit rod 1607 insert into the inner side of another limit hole 1608, limit the fixed ring 1609, and collect sound from the speaker on the side.

[0041] By providing the opening 11, the single-leaf door 12, the mounting seat 20, the mounting slot 21, and the detachable mechanism 22, when the pickup 18 needs to be maintained, the single-leaf door 12 can be opened, and the slider 15 can be moved to the opening 11 by controlling the linear slide rail 10, and then the two movable plates 2202 are pulled outward at the same time, and the movement of the movable plate 2202 drives the plug plate 2203 to move, and the plug plate 2203 leaves the inner side of the slot 2204, and the limit on the mounting seat 20 is released, so that the mounting seat 20 can be removed from the inner side of the mounting slot 21, and the pickup 18 can be removed from the bottom of the rotating seat 17 and taken out from the opening 11 for maintenance. The present invention can fix the object to be tested, and adjust the relative position between the pickup 18 and the product to be tested by rotating the limiting mechanism 16, so that the pickup 18 can accurately face the setting area of ​​the speaker in the product to be tested, thereby improving the accuracy of the test, and at the same time facilitating the disassembly and assembly of the pickup 18, facilitating its maintenance, and ensuring the pickup effect.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. An audio testing device, comprising a testing box (1) and a testing device (4), characterized in that: A transverse groove A (3) is provided below the front end surface of the detection box (1), the inner side of the transverse groove A (3) is movably connected to a placement mechanism (5) via a moving mechanism (13), a groove (7) is provided in front of the upper end surface of the transverse groove A (3), the inner side of the groove (7) is movably connected to a cover plate (2) via an electric push rod A (6), an active cavity (9) is provided behind the upper end surface of the cover plate (2), the side of the active cavity (9) is movably connected to a linear guide rail (10) via an electric push rod B (14), a slider (15) is slidably connected below the linear guide rail (10), and the lower end surface of the slider (15) is fixed via a rotation limit mechanism (16). A rotating seat (17) is provided, the rotating limiting mechanism (16) comprises a square block (1601), the lower end surface of the square block (1601) is provided with a square groove (1611), a CCD camera (19) is installed in front of the top surface of the inner wall of the square groove (1611), the lower end surface of the rotating seat (17) is provided with a mounting groove (21), the inner side of the mounting groove (21) is movably connected with a mounting seat (20) through a detachable mechanism (22), the lower end surface of the mounting seat (20) is installed with a pickup (18), and the rear end surface of the detection box (1) is provided with an opening (11), and a single door (12) is installed on the inner side of the opening (11).

2. An audio testing device according to claim 1, characterized in that: The placement mechanism (5) comprises a placement plate (502), a storage groove (503) is arranged in the middle of the upper end surface of the placement plate (502), a through groove A (504) is arranged on the front end surface of the placement plate (502), strip grooves A (510) are arranged on both sides of the upper end surface of the placement plate (502), a connecting shaft (509) is arranged in the middle of the strip groove A (510), a threaded rod A (508) is installed on the front and rear end surfaces of the connecting shaft (509), a threaded plate (507) is sleeved on the outer surface of the threaded rod A (508), and the upper end surface of the threaded plate (507) is fixedly connected to the vertical plate (501).

3. An audio testing device according to claim 2, characterized in that: A fixing plate (505) is installed on one side of the outer surface of the vertical plate (501), and a threaded hole (511) is provided through the upper end surface of the fixing plate (505). A screw rod (512) is connected to the inner side of the threaded hole (511) via a thread, and a pressure plate (506) is rotatably connected to the lower side of the screw rod (512) via a bearing, and a rubber pad A is fixedly connected to the lower end surface of the pressure plate (506).

4. The audio testing device according to claim 2, characterized in that: A motor C is installed behind the strip groove A (510) through a motor cavity, and the output end of the motor C is fixedly connected to the rear end face of one of the threaded rods A (508) through a coupling, and the front end face of the other threaded rod A (508) is rotatably connected to the inner wall of the strip groove A (510) through a bearing, and the thread directions of the two threaded rods A (508) are opposite.

5. The audio testing device according to claim 2, characterized in that: The moving mechanism (13) comprises a threaded rod B (1303), wherein the threaded rod B (1303) is arranged on both sides of the upper end surface of the transverse groove A (3) through a strip groove B (1304), a threaded block (1302) is sleeved on the outer surface of the threaded rod B (1303), the upper end surface of the threaded block (1302) is fixedly connected to the rear of the lower end surface of the placement plate (502), a motor A (1301) is installed behind the strip groove B (1304) through a cavity, the output end of the motor A (1301) is fixedly connected to the rear end surface of the threaded rod B (1303) through a coupling, and the front end surface of the threaded rod B (1303) is rotatably connected to the inner wall of the strip groove B (1304) through a bearing.

6. The audio testing device according to claim 1, characterized in that: A housing (1605) is installed on the rear end face of the square block (1601), a cross bar (1604) is arranged on the inner side of the housing (1605), pins (1602) are installed on the front and rear end faces of the rotating seat (17), a motor B (1610) is installed on the front end face of the square block (1601), the output end of the motor B (1610) is fixedly connected to the front end face of one of the pins (1602) via a coupling, the rear end face of the other pin (1602) is fixedly connected to the front end face of the cross bar (1604), and the rear end face of the cross bar (1604) is rotatably connected to the inner surface of the housing (1605) via a bearing.

7. An audio testing device according to claim 6, characterized in that: The rear end face of the square block (1601) is provided with a through groove B (1603), the outer surface of the cross bar (1604) is fixedly sleeved with a fixing ring (1609), the upper end face and the rear end face of the fixing ring (1609) are both provided with limiting holes (1608), the upper end face of the shell (1605) is installed with an electric push rod C (1606), the lower end face of the electric push rod C (1606) is installed with a limiting rod (1607) through a mounting plate, and the limiting rod (1607) is adapted to the limiting hole (1608).

8. The audio testing device according to claim 1, characterized in that: The detachable mechanism (22) comprises a movable plate (2202), the movable plate (2202) being arranged at the front and rear of the mounting groove (21) via a strip groove C (2205), the movable plate (2202) and the strip groove C (2205) being movably connected via a spring (2201), an inserting plate (2203) being installed on opposite sides of the outer surfaces of the two movable plates (2202), the front and rear end surfaces of the mounting seat (20) being both provided with slots (2204), the strip groove C (2205) and the mounting groove (21) being connected via a connecting groove, the inserting plate (2203) passing through the connecting groove, and the inserting plate (2203) being adapted to the slot (2204).

9. The audio testing device according to claim 1, characterized in that: The four end corners of the upper end face of the mounting seat (20) are all equipped with positioning columns, the four end corners of the upper end face of the mounting groove (21) are all provided with positioning holes, and the positioning columns are snapped into the inner side of the positioning holes, the upper end face of the storage groove (503) is paved with a silicone pad, a card slot (8) is provided in front of the upper end face of the transverse groove A (3), the card slot (8) is adapted to the cover plate (2), the lower part of the outer surface of the cover plate (2) is covered with a rubber pad B, the rear end face of the inner wall of the movable cavity (9) is provided with a transverse groove B, and the rear end face of the linear guide rail (10) is snapped into the inner side of the transverse groove B.

10. The audio testing device according to claim 1, characterized in that: An observation window is installed on one side of the outer surface of the detection box (1); the rear end surface of the detection box (1) is connected to the test device (4) via a wire A; the microphone (18) is connected to the wire A via a wire B; a display screen is installed on the front end surface of the test device (4); the CCD camera (19) is electrically connected to the display screen; the single-leaf door (12) is rotatably connected to the opening (11) via a hinge; a rubber sealing strip is installed on the outer surface of the single-leaf door (12); and a handle is installed on the rear end surface of the single-leaf door (12).

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