A microphone vibration test fixture

Abstract

This utility model belongs to the field of microphone vibration testing technology, and in particular, it is a microphone vibration testing fixture. Addressing the problems of existing microphone testing methods, which often involve separate and independent fixing of microphones, resulting in low fixing efficiency and poor vibration testing performance due to the simple vertical vibration, this utility model proposes the following solution: A base, on the top of which a reciprocating motor is fixedly mounted, a connecting mechanism is mounted on the reciprocating motor, and a circular box is mounted on the connecting mechanism; a fixing mechanism, disposed on the circular box, for fixing the microphones; and an annular seat, mounted on the top of the base, with six support rods fixedly mounted on the bottom of the circular box, each support rod having a ball bearing embedded at its bottom end. This utility model has a simple structure, can simultaneously fix multiple microphones, and can control the microphones' rotation and simultaneous up-and-down reciprocating vibration, resulting in good vibration testing performance.

Description

Technical Field

[0001] This utility model relates to the field of microphone vibration testing technology, and in particular to a microphone vibration testing fixture. Background Technology

[0002] A microphone, also known as a transducer, is an energy conversion device that converts sound signals into electrical signals. Microphones come in various types based on their operating principle, including dynamic, condenser, electret, and the recently developed silicon micromicrophones. Other types include liquid microphones and laser microphones.

[0003] Publication No. CN207070361U discloses a microphone testing fixture, including a test base, a microphone limiting groove and a test probe disposed within the test base, as well as a clamp, a horizontal moving mechanism, and a vertical moving mechanism. The microphone substrate is placed within the microphone limiting groove, the clamp contacts the edge of the microphone substrate, the horizontal moving mechanism is connected to the clamp, and the horizontal moving mechanism controls the clamp to hold the microphone substrate. The vertical moving mechanism is connected to the horizontal moving mechanism, and the vertical moving mechanism controls the vertical movement of the clamped microphone substrate so that the microphone substrate contacts the test probe. This fixture improves the accuracy of testing leaky microphones, thereby enhancing microphone quality.

[0004] Existing microphone testing methods are inconvenient for uniform microphone fixation, as microphones are fixed separately and independently, resulting in low fixation efficiency. Furthermore, vibration testing only involves vertical vibration, which leads to poor vibration test results. Utility Model Content

[0005] The purpose of this invention is to solve the shortcomings of existing microphone testing methods, which make it inconvenient to uniformly fix microphones, as they are fixed separately and independently, resulting in low fixing efficiency and poor vibration testing effect due to simple vertical vibration. Therefore, a microphone vibration testing fixture is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A microphone vibration testing fixture, comprising:

[0008] A base, on the top of which a reciprocating motor is fixedly mounted, a connecting mechanism is mounted on the reciprocating motor, and a circular box is mounted on the connecting mechanism;

[0009] A fixing mechanism, set on a circular box, is used to fix the microphone in place;

[0010] The ring seat is installed on top of the base. Six support rods are fixedly installed on the bottom of the circular box. The bottom of each of the six support rods is embedded with a ball bearing, and all six balls bearings are in contact with the top of the ring seat.

[0011] Preferably, the top of the annular seat is provided with multiple arc-shaped grooves, and six support rods are adapted to the multiple arc-shaped grooves. The six support rods drive six balls to slide on the annular seat. Through the compression and engagement of the arc-shaped grooves, the circular box vibrates up and down.

[0012] Preferably, the connecting mechanism includes a hexagonal rod and a cylinder. The bottom end of the hexagonal rod is fixedly installed to the output shaft of the reciprocating motor. The cylinder is fixedly installed at the bottom center of the circular box. A hexagonal groove is provided at the bottom of the cylinder. The hexagonal rod is slidably connected to the inner wall of the hexagonal groove.

[0013] Preferably, each of the six sides of the hexagonal rod is embedded with a sliding ball, the sliding ball being slidably connected to the inner wall of the hexagonal groove, and a tension spring is fixedly installed on the top of the hexagonal rod, the top of the tension spring being fixedly installed to the inner wall of the hexagonal groove.

[0014] Preferably, the fixing mechanism includes six U-shaped seats, all of which are fixedly installed on the top of the circular box. Each of the six U-shaped seats is provided with an airbag, and each of the six airbags is connected to a branch pipe. The six branch pipes are connected to the same connecting pipe, which is connected to an air pipe. An air pump is connected to the air pipe, and a solenoid valve is installed on the air pipe.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This solution places the microphone inside a U-shaped base and encloses it with airbags. An air pump works to inflate the connecting tube through an air tube, and the gas is sent into multiple branch tubes through the connecting tube, causing multiple airbags to expand and squeeze and fix the microphone, thus achieving the purpose of fixing multiple microphones at the same time.

[0017] In this design, the reciprocating motor drives the hexagonal rod to rotate, which in turn drives the cylinder to rotate reciprocally through the hexagonal slot. The cylinder then drives the circular box to rotate reciprocally, and the circular box, through six U-shaped seats, drives six microphones to vibrate reciprocally. As the circular box rotates, it drives six support rods to rotate, and the six support rods drive six ball bearings to slide on the annular seat. Through the compression and engagement of the arc-shaped slots, the circular box vibrates up and down, allowing the six microphones to rotate and vibrate up and down simultaneously.

[0018] This invention has a simple structure and can simultaneously fix multiple microphones. It can control the microphones to rotate and vibrate up and down simultaneously, resulting in good vibration test results. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a microphone vibration testing fixture proposed in this utility model;

[0020] Figure 2This is a schematic diagram of part A of a microphone vibration testing fixture proposed in this utility model;

[0021] Figure 3 This is a top view of the circular box and U-shaped base proposed in this utility model.

[0022] Figure 4 This is a bottom view of the circular box, support rod, and cylinder proposed in this utility model.

[0023] Figure 5 This is a three-dimensional structural diagram of the annular seat proposed in this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the hexagonal rod proposed in this utility model.

[0025] In the diagram: 1. Base; 2. Ring seat; 21. Arc groove; 3. Support rod; 4. Ball bearing; 5. Circular box; 6. Air pump; 7. Air pipe; 8. Solenoid valve; 9. Connecting pipe; 10. Branch pipe; 11. U-shaped seat; 12. Airbag; 13. Reciprocating motor; 14. Hexagonal rod; 15. Cylinder; 16. Hexagonal groove; 17. Tension spring; 18. Sliding ball. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Reference Figures 1-6 A microphone vibration testing fixture includes a base 1, a fixing mechanism, and an annular seat 2. A reciprocating motor 13 is fixedly installed on the top of the base 1. A connecting mechanism is installed on the reciprocating motor 13. A circular box 5 is installed on the connecting mechanism. The fixing mechanism is set on the circular box 5 for fixing the microphone. The annular seat 2 is installed on the top of the base 1. Six support rods 3 are fixedly installed on the bottom of the circular box 5. The bottom ends of the six support rods 3 are all embedded with ball bearings 4. The six ball bearings 4 are all in contact with the top of the annular seat 2.

[0029] Reference Figure 1 , Figure 5 In this embodiment, the top of the annular seat 2 is provided with multiple arc-shaped grooves 21, and six support rods 3 are adapted to the multiple arc-shaped grooves 21. The six support rods 3 drive six balls 4 to slide on the annular seat 2. Through the squeezing and cooperation of the arc-shaped grooves 21, the circular box 5 vibrates up and down.

[0030] Reference Figure 2In this embodiment, the connecting mechanism includes a hexagonal rod 14 and a cylinder 15. The bottom end of the hexagonal rod 14 is fixedly installed with the output shaft of the reciprocating motor 13. The cylinder 15 is fixedly installed at the bottom center of the circular box 5. A hexagonal groove 16 is provided at the bottom of the cylinder 15. The hexagonal rod 14 is slidably connected to the inner wall of the hexagonal groove 16. Each of the six sides of the hexagonal rod 14 is embedded with a ball bearing 18. The ball bearing 18 is slidably connected to the inner wall of the hexagonal groove 16. A tension spring 17 is fixedly installed at the top of the hexagonal rod 14. The top end of the tension spring 17 is fixedly installed with the inner wall of the hexagonal groove 16.

[0031] Reference Figure 1 , Figure 3 , Figure 6 In this embodiment, the fixing mechanism includes six U-shaped seats 11, all of which are fixedly installed on the top of the circular box 5. Each of the six U-shaped seats 11 is provided with an airbag 12, and each of the six airbags 12 is connected to a branch pipe 10. Each of the six branch pipes 10 is connected to the same connecting pipe 9, and the connecting pipe 9 is connected to an air pipe 7. An air pump 6 is connected to the air pipe 7, and a solenoid valve 8 is installed on the air pipe 7.

[0032] Operating mode: When in use, connect the power supply and controller, place the microphone in the U-shaped base 11, and wrap it with the air bag 12. The air pump 6 works to inflate the connecting pipe 9 through the air pipe 7. The air is then sent into multiple branch pipes 10 through the connecting pipe 9, causing the multiple air bags 12 to expand and compress and fix the microphone. This can achieve the purpose of fixing multiple microphones at the same time. The reciprocating motor 13 works to drive the hexagonal rod 14 to rotate. The hexagonal rod 14 drives the cylinder 15 to rotate back and forth through the hexagonal groove 16. The cylinder 15 drives the circular box 5 to rotate back and forth. The circular box 5 drives the six microphones to rotate back and forth through the six U-shaped bases 11. When the circular box 5 rotates, it drives the six support rods 3 to rotate. The six support rods 3 drive the six ball bearings 4 to slide on the ring base 2. Through the compression and engagement of the arc groove 21, the circular box 5 vibrates up and down, so that the six microphones can rotate and vibrate up and down simultaneously.

[0033] Example 2

[0034] In this embodiment, the difference between Embodiment 2 and Embodiment 1 is that: four anti-slip pads are fixedly installed on the bottom of the base 1. The anti-slip pads can improve the stability of the base 1. The anti-slip pads are made of silicone and can play a shock-absorbing role for the base 1. All structures in this application can be selected in terms of material and length according to actual use. The attached drawings are schematic structural diagrams, and the actual dimensions can be adjusted appropriately.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A microphone vibration testing fixture, characterized in that, include: A base (1) is fixedly mounted on the top of the base (1), a reciprocating motor (13) is mounted on the reciprocating motor (13), and a circular box (5) is mounted on the connecting mechanism. A fixing mechanism is set on the circular box (5) for fixing the microphone; The ring seat (2) is installed on the top of the base (1). Six support rods (3) are fixedly installed on the bottom of the circular box (5). The bottom ends of the six support rods (3) are all inlaid with balls (4). The six balls (4) are in contact with the top of the ring seat (2).

2. The microphone vibration testing fixture according to claim 1, characterized in that, The top of the annular seat (2) is provided with multiple arc-shaped grooves (21), and the six support rods (3) are adapted to the multiple arc-shaped grooves (21).

3. The microphone vibration testing fixture according to claim 1, characterized in that, The connecting mechanism includes a hexagonal rod (14) and a cylinder (15). The bottom end of the hexagonal rod (14) is fixedly installed with the output shaft of the reciprocating motor (13). The cylinder (15) is fixedly installed at the bottom center of the circular box (5). A hexagonal groove (16) is provided at the bottom of the cylinder (15). The hexagonal rod (14) is slidably connected to the inner wall of the hexagonal groove (16).

4. A microphone vibration testing fixture according to claim 3, characterized in that, The six sides of the hexagonal rod (14) are each inlaid with a ball bearing (18), and the ball bearing (18) is slidably connected to the inner wall of the hexagonal groove (16).

5. A microphone vibration testing fixture according to claim 3, characterized in that, A tension spring (17) is fixedly installed on the top of the hexagonal rod (14), and the top of the tension spring (17) is fixedly installed on the inner wall of the hexagonal groove (16).

6. A microphone vibration testing fixture according to claim 1, characterized in that, The fixing mechanism includes six U-shaped seats (11), all six U-shaped seats (11) are fixedly installed on the top of the circular box (5), each of the six U-shaped seats (11) is provided with an airbag (12), each of the six airbags (12) is connected to a branch pipe (10), each of the six branch pipes (10) is connected to the same connecting pipe (9), the connecting pipe (9) is connected to an air pipe (7), and the air pipe (7) is connected to an air pump (6).

7. A microphone vibration testing fixture according to claim 6, characterized in that, A solenoid valve (8) is installed on the air pipe (7).

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