Microphone testing device

Abstract

The utility model relates to the technical field of microphones, and discloses a microphone testing device which comprises a testing box, supporting legs are fixedly connected to the lower portions of the two sides of the testing box, an inner cylinder is installed at the front end in the testing box through a sealing gasket, a sliding plate is movably connected into the inner cylinder in a sleeved mode, and a sliding rail is fixedly connected to the upper portion of the sliding plate. A sliding rod is movably connected into the upper end of the sliding rail in a sleeved mode. According to the microphone testing device, the sealed space is formed in the testing box, the sealing gasket and the inner cylinder, the sealed space is vacuum, and the inner cylinder is suspended in the testing box through the elastic pull rope and the spring, so that sound transmission can be reduced through vacuum, and the situation that the testing effect is affected after external noise is transmitted into the testing device is avoided; and an elastic pull rope and a spring are arranged outside the inner cylinder, and the elastic pull rope and the spring can perform sound wave vibration to influence the detection of the microphone, so that the test efficiency of the microphone is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a microphone technical field, concretely is a microphone testing device. BACKGROUND

[0002] The microphone is also called the microphone, and it is an energy conversion device for converting a sound signal into an electric signal. After the microphone is produced and assembled, its sound quality, tone, stability and other performances need to be detected. In order to improve the test effect of the microphone tone and the sound size, the tone effect is detected frequently by using an electroacoustic tester after controlling the microphone sound transmission, so as to improve the quality of the microphone.

[0003] During the detection of the quality of the microphone by using the electroacoustic tester, the microphone is usually arranged on one side of the electroacoustic tester. After the sound is transmitted to the microphone through the loudspeaker, the microphone drives the sound signal to be transmitted to the inside of the electroacoustic tester. During the sound transmission, the starting of the equipment controlled by the external staff will produce noise, and the external noise will be transmitted to the inside of the detection device. The noise will cause noise during the microphone sound transmission, which will affect the detection efficiency of the microphone. Therefore, the utility model provides a microphone testing device. UTILITY MODEL CONTENTS

[0004] In view of the defects of the existing microphone testing device, the utility model provides a microphone testing device. The inner cylinder is arranged in the inside of the test box through the elastic pull rope, the test box is in a suspended state, and the space between the test box and the inner cylinder is kept in a vacuum state. This can avoid the transmission of noise to the inside of the inner cylinder and the influence of the noise on the detection of the microphone in the inner cylinder. The problems in the above background technology are solved.

[0005] The utility model provides the following technical scheme: a microphone testing device, including test box, the lower part of test box both sides is fixedly connected with support foot, the front end in test box is installed with inner cylinder through sealing gasket, the inside of inner cylinder is rotatably sleeved with sliding plate, the upper part of sliding plate is fixedly connected with slide rail, the inside of slide rail upper end is rotatably sleeved with slide rod, the other end of sliding plate is fixedly connected with sealing cover, is provided with loudspeaker in the upper part of sealing cover inner wall, the upper part of slide rod is installed with telescopic link, the top of telescopic link is installed with connecting plate, one side of connecting plate is rotatably sleeved with microphone placing cover, the side surface of one end of microphone placing cover is fixedly connected with arc plate.

[0006] Preferably, the inside of the test box is formed with a cavity, and the inner cylinder is arranged in the inside of the cavity. The sealing space is formed between the sealing gasket of the test box and the inner cylinder, and the inside of the sealing space is in a vacuum state.

[0007] Preferably, the inner cylinder is provided with elastic pull ropes around, and the elastic pull ropes are provided with springs outside, and the springs are arranged between the test box and the inner cylinder.

[0008] Preferably, the slide rod is arranged inside the slide rail, and the slide rod is arranged at the front end of the loudspeaker.

[0009] Preferably, the sealing cover is arranged outside the test box, and the inner side of the sealing cover is provided with a sealing plate, and the sealing plate is arranged outside the inner cylinder.

[0010] Preferably, the microphone to be detected is arranged inside the microphone placing sleeve, the arc-shaped plate is in a circular arc shape, and the arc-shaped plate is provided with fastening bolts outside.

[0011] Preferably, the loudspeaker is arranged at one side of the slide rail, and the other end of the slide rail is fixedly connected with an electroacoustic tester, and the slide rod is arranged between the loudspeaker and the electroacoustic tester.

[0012] Compared with the prior microphone test device, the microphone test device has the following beneficial effects:

[0013] 1. The microphone test device forms a sealed space in the test box, the sealing gasket and the inner cylinder, and the sealed space is in a vacuum state, and the inner cylinder is suspended in the test box by the elastic pull ropes and the springs, that is, the sound propagation can be reduced by the vacuum, so that the test effect is not affected by the transmission of external noise to the inside of the test device, and the elastic pull ropes and the springs are arranged outside the inner cylinder, so that the detection of the microphone is affected by the sound wave vibration, thereby improving the test efficiency of the microphone.

[0014] 2. The microphone test device is arranged inside the inner cylinder by the slide plate, that is, according to different microphones, the height of the telescopic rod and the angle of the microphone placing sleeve can be changed, so that the microphone and the loudspeaker can be aligned, and the stability of the microphone when receiving sound is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the main sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the main sectional structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the local enlarged structure of the detection mechanism of the utility model;

[0019] Figure 5 It is a schematic diagram of the enlarged structure of A of the utility model;

[0020] Figure 6 The enlarged structure schematic view of the utility model B.

[0021] In the figure: 1, test box; 2, support foot; 3, sealing gasket; 4, inner cylinder; 5, elastic pull rope; 6, spring; 7, sliding plate; 8, sliding rail; 9, electroacoustic tester; 10, sliding rod; 11, sealing cover; 12, sealing plate; 13, loudspeaker; 14, telescopic rod; 15, connecting plate; 16, microphone placing sleeve; 17, arc plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , a microphone testing device, including test box 1, the lower part of both sides of test box 1 is fixedly connected with support foot 2, support foot 2 drives test box 1 to be placed in the corresponding position, the front end in test box 1 is provided with inner cylinder 4 by sealing gasket 3, sealing gasket 3 seals the front end of the connecting place of test box 1 and inner cylinder 4, sealing gasket 3 can be adjusted in extension, when inner cylinder 4 moves in test box 1, sealing gasket 3 can be adjusted synchronously, the inside of inner cylinder 4 is movably sleeved with sliding plate 7, sliding plate 7 can move in the inside of inner cylinder 4, conveniently drives microphone to move out from the inside of inner cylinder 4, the upper part of sliding plate 7 is fixedly connected with sliding rail 8, the inside of the upper end of sliding rail 8 is movably sleeved with sliding rod 10, sliding rod 10 adjusts the position of microphone in the inside of inner cylinder 4, the other end of sliding plate 7 is fixedly connected with sealing cover 11, sealing cover 11 is arranged outside test box 1, keeps its sealing property, loudspeaker 13 is arranged on the upper part of the inner wall of sealing cover 11, telescopic rod 14 is installed on the upper part of sliding rod 10, connecting plate 15 is installed on the top end of telescopic rod 14, microphone placing sleeve 16 is movably sleeved on one side of connecting plate 15, microphone placing sleeve 16 limits the position of microphone, arc plate 17 is fixedly connected on the side of one end of microphone placing sleeve 16, adjusts the angle of arc plate 17, arc plate 17 adjusts the inclination angle of microphone placing sleeve 16.

[0024] Please refer to Figure 2The inside of the test box 1 is formed with a cavity, and the inner cylinder 4 is arranged inside the cavity, a sealed space is formed between the test box 1 and the gasket 3 and the inner cylinder 4, the inside of the sealed space is in a vacuum state, and the sealed space is formed between the test box 1, the gasket 3 and the inner cylinder 4, and the air inside the sealed space is extracted, that is, the inside of the sealed space is in a vacuum state, and the vacuum area is arranged outside the inner cylinder 4. When the inner cylinder 4 is tested for the microphone, the propagation of sound waves is avoided, which affects the sound detection efficiency.

[0025] Please refer to Figure 3 The elastic pull rope 5 is arranged around the inner cylinder 4, the spring 6 is sleeved outside the elastic pull rope 5, and the spring 6 is arranged between the test box 1 and the inner cylinder 4. The elastic pull rope 5 is arranged between the test box 1 and the inner cylinder 4, the elastic pull rope 5 drives the inner cylinder 4 to be in a suspended state inside the test box 1, and the spring 6 is sleeved outside the elastic pull rope 5. The spring 6 provides elastic force to the inner cylinder 4, that is, when the outside of the test box 1 is impacted, the impact on the equipment inside the inner cylinder 4 can be reduced, and the vibration is avoided to affect the propagation of sound.

[0026] Please refer to Figure 4 The slide rod 10 is arranged inside the slide rail 8, and the slide rod 10 is arranged at the front end of the loudspeaker 13. The slide rod 10 is arranged at the front end of the loudspeaker 13, and the position of the slide rod 10 in the slide rail 8 can be adjusted. By adjusting the position of the slide rod 10, the distance between the slide rod 10 and the loudspeaker 13 can be adjusted, and the receiving distance of the microphone sound propagation sound placed on the upper part of the slide rod 10 by the electroacoustic tester 9 can be adjusted. By adjusting the position of the slide rod 10, the distance between the microphone receiving sound and the detection device receiving sound can be adjusted, which is convenient for controlling the drawing to detect the sound transmission effect of different spacing parts and improves the practicality of the detection effect.

[0027] Please refer to Figure 4 And the sealing cover 11 is sleeved outside the test box 1, and the inner side of the sealing cover 11 is connected with the sealing plate 12, and the sealing plate 12 is sleeved outside the inner cylinder 4. The sealing cover 11 is sleeved outside the test box 1, that is, the movable space of the sealing cover 11 at the front end of the test box 1 can be adjusted, and the sealing plate 12 is sleeved outside the inner cylinder 4, that is, the sealing plate 12 can seal the inside of the inner cylinder 4. The detection device detects the quality of the microphone in a sealed state to improve the detection effect of the microphone.

[0028] Please refer to Figure 6, the microphone is placed in the microphone placing sleeve 16, the arc-shaped plate 17 is circular, and the arc-shaped plate 17 is provided with fastening bolts outside, the microphone is placed in the microphone placing sleeve 16, and the inclination of the arc-shaped plate 17 to the microphone placing sleeve 16 can be adjusted by rotating the arc-shaped plate 17, the angle of the microphone placing sleeve 16 can be adjusted according to the different moving positions of the sliding rod 10 on the upper portion of the sliding rail 8, the microphone and the loudspeaker 13 are aligned and installed, and the receiving effect of the microphone on the sound propagated by the loudspeaker 13 is improved.

[0029] Please refer to Figure 2 The loudspeaker 13 is arranged on one side of the sliding rail 8, the other end of the sliding rail 8 is fixedly connected with the electroacoustic tester 9, the sliding rod 10 is arranged between the loudspeaker 13 and the electroacoustic tester 9, the loudspeaker 13 is arranged on one side of the sliding rail 8, the other side of the sliding rail 8 is provided with the electroacoustic tester 9, the loudspeaker 13 propagates sound, the microphone placing sleeve 16 receives sound inside, conducts, the electroacoustic tester 9 receives the sound of the microphone, the size and tone of the sound of the microphone are observed, and the quality of the microphone is detected.

[0030] Working principle: in use, the sliding plate 7 is controlled to slide out of the inside of the inner cylinder 4, the microphone is placed in the microphone placing sleeve 16, the position of the sliding rod 10 is adjusted, the height of the telescopic rod 14 is adjusted, the arc-shaped plate 17 is rotated, the microphone and the loudspeaker 13 are aligned and installed, the sealing cover 11 is controlled to move inwards, the sealing plate 12 is sleeved in the inside of the inner cylinder 4, the inside of the inner cylinder 4 is in a sealed state, the loudspeaker 13 is started, the loudspeaker 13 propagates sound, the microphone receives sound, the size and tone of the sound of the microphone are detected by the electroacoustic tester 9, the quality of the microphone is detected, and in the sound propagation process, the outer portion of the inner cylinder 4 and the test box 1 form a sealed cavity, the outer portion of the inner cylinder 4 is provided with elastic equipment, the inner cylinder 4 is kept in a suspended state, and in the sound propagation process, the equipment vibration is avoided to affect the sound propagation efficiency.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the range of the utility model is defined by the appended claims and their equivalents.

Claims

1. A microphone testing device, comprising a testing box (1), the lower part of both sides of the testing box (1) is fixedly connected with a supporting leg (2), the front end of the inside of the testing box (1) is installed with an inner cylinder (4) through a sealing gasket (3), characterized in that: The inner sleeve (4) is movably sleeved with a sliding plate (7), the upper part of the sliding plate (7) is fixedly connected with a sliding rail (8), the inner part of the upper end of the sliding rail (8) is movably sleeved with a sliding rod (10), the other end of the sliding plate (7) is fixedly connected with a sealing cover (11), the upper inner wall of the sealing cover (11) is provided with a loudspeaker (13), the upper part of the sliding rod (10) is mounted with a telescopic rod (14), the top end of the telescopic rod (14) is mounted with a connecting plate (15), one side of the connecting plate (15) is movably sleeved with a microphone placing sleeve (16), the side of one end of the microphone placing sleeve (16) is fixedly connected with an arc-shaped plate (17).

2. A microphone testing device according to claim 1, characterized in that: The inside of the test box (1) is formed with a cavity, and the inner sleeve (4) is arranged inside the cavity, the sealing space is formed between the sealing gasket (3) and the inner sleeve (4) of the test box (1), and the inside of the sealing space is in a vacuum state.

3. A microphone testing device according to claim 1, wherein: The periphery of the inner sleeve (4) is mounted with an elastic pull rope (5), the outside of the elastic pull rope (5) is sleeved with a spring (6), and the spring (6) is arranged between the test box (1) and the inner sleeve (4).

4. A microphone testing device according to claim 1, wherein: The sliding rod (10) is arranged inside the sliding rail (8), and the sliding rod (10) is arranged at the front end of the loudspeaker (13).

5. A microphone testing device according to claim 1, wherein: The sealing cover (11) is sleeved outside the test box (1), the inner side of the sealing cover (11) is connected with a sealing plate (12), and the sealing plate (12) is sleeved outside the inner sleeve (4).

6. A microphone testing device according to claim 1, wherein: The microphone to be detected is sleeved inside the microphone placing sleeve (16), the arc-shaped plate (17) is in a circular arc shape, and the arc-shaped plate (17) is provided with a fastening bolt outside.

7. A microphone testing device according to claim 1, wherein: The loudspeaker (13) is arranged on one side of the sliding rail (8), and the other end of the sliding rail (8) is fixedly connected with an electroacoustic tester (9), and the sliding rod (10) is arranged between the loudspeaker (13) and the electroacoustic tester (9).

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