Silicon microphone test equipment

Abstract

The utility model discloses a silicon microphone testing device, which belongs to the technical field of microphone testing and comprises a sound insulation casing, a sliding casing slidably mounted in the sound insulation casing, a first motor fixedly mounted on one side of the sound insulation casing, a threaded rod fixedly mounted at the output end of the first motor, and a spiral block in threaded connection with the threaded rod. The spiral block is fixedly installed at the bottom end of the sliding shell, racks are fixedly installed on the two sides of the sliding shell, a door plate is rotationally installed on the sound insulation shell, a rotating rod is fixedly installed at the bottom end of the door plate, two gears are fixedly installed on the rotating rod and engaged with the two racks correspondingly, and an electric push rod is fixedly installed at the top end of the sound insulation shell. According to the utility model, a closed structure is adopted, the problem of errors during the test of a traditional open structure is avoided to a certain extent, the position and the test condition of the silicon microphone can be accurately controlled through the cooperative work of a plurality of structures, the reliable circuit connection and signal transmission can be realized, and the test work of the silicon microphone can be efficiently and accurately completed.

Description

Technical Field

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

[0002] Silicon microphone testing equipment mainly includes the following aspects. Silicon microphones are microphones manufactured using microelectromechanical systems (MEMS) technology. They possess advantages such as small size, high sensitivity, high signal-to-noise ratio, low power consumption, low distortion, stable performance, high reliability, and omnidirectional characteristics, and are widely used in consumer electronics, automotive electronics, medical fields, and other areas. With the rapid development of these fields, the demand for silicon microphones is constantly increasing, driving continuous progress in silicon microphone technology and increasing production volume. This, in turn, has spurred the development of silicon microphone testing equipment. As silicon microphones are widely used in various fields, the requirements for their quality and performance are becoming increasingly stringent. This necessitates more accurate, efficient, and stable testing equipment to ensure product consistency and reliability. For example, in large-scale production processes, it is necessary to quickly screen out defective products to improve production efficiency and reduce costs. This places higher demands on the automation level and testing speed of silicon microphone testing equipment. Silicon microphone testing equipment has been developed by continuously integrating new technologies and methods to meet the industry's demand for high-quality and high-efficiency testing, based on the widespread application of silicon microphones and the limitations of traditional testing methods.

[0003] Silicon microphones are widely used in consumer electronics, automotive electronics, and medical fields due to their advantages such as small size, high sensitivity, high signal-to-noise ratio, low power consumption, low distortion, stable performance, high reliability, and omnidirectional characteristics. However, most existing silicon microphone testing equipment has some shortcomings. Traditional testing devices are mostly open structures, which are inconvenient to operate and prone to introducing errors when testing special types of silicon microphones such as rear-entry microphones. Furthermore, existing testing equipment can hardly meet production requirements in terms of testing efficiency, accuracy, and stability. Therefore, we propose a silicon microphone testing device to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a silicon microphone testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A silicon microphone testing device includes: a soundproof housing, a sliding shell slidably installed inside the soundproof housing, a motor fixedly installed on one side of the soundproof housing, a threaded rod fixedly installed at the output end of the motor, a helical block threadedly connected to the threaded rod, the helical block fixedly installed at the bottom end of the sliding shell, racks fixedly installed on both sides of the sliding shell, a door panel rotatably installed on the soundproof housing, a rotating rod fixedly installed at the bottom end of the door panel, two gears fixedly installed on the rotating rod, the two gears meshing with the two racks respectively, an electric push rod fixedly installed at the top of the soundproof housing, a detection device fixedly installed at the output end of the electric push rod, a test unit component fixedly installed inside the detection device, and multiple detection probes fixedly installed at the bottom end of the detection device, the detection probes being electrically connected to the detection device.

[0007] Preferably, a clamping shell is fixedly installed inside the sliding shell, a sliding plate and a limiting plate are fixedly installed inside the clamping shell, a plurality of sliding rods are slidably installed between the sliding plate and the limiting plate, a rotating plate is rotatably installed inside the clamping shell, a plurality of arc-shaped concave holes are opened on the rotating plate, a plurality of sliding rods are slidably installed in the arc-shaped concave holes, a clamping block is fixedly installed on one side of the sliding rod, and a rubber pad is fixedly installed on one side of the clamping block.

[0008] Preferably, a pad is fixedly installed on the sliding shell, a spiral block is fixedly installed on the top of the pad, two clamping arms are fixedly installed on one side of the spiral block, an electric wire is fixedly installed on the top of the pad, a connecting connector is fixedly installed on the top of the electric wire, the connecting connector is disposed between the two clamping arms, and a placement recess matching the connecting connector is opened between the two clamping arms.

[0009] Preferably, a second motor is fixedly installed inside the clamping housing, a worm gear is fixedly installed at the output end of the second motor, a worm wheel is fixedly installed on the outer side of the rotating plate, the worm wheel meshes with the worm gear, and sliding strip holes are provided on both the sliding plate and the limiting plate.

[0010] Preferably, a magnetic strip is fixed on one side of the door panel, and one side of the magnetic strip is in movable contact with the soundproof shell. Two small round rods are fixedly installed on the sliding rod, and a sliding groove matching the small round rods is opened on the sliding strip hole.

[0011] Preferably, the soundproof housing has a rotating hole that matches the gear, a moving groove that matches the helical block, and a mounting groove that matches the motor.

[0012] Preferably, the clamping housing has a fixing groove that matches the second motor, a rotating groove that matches the worm gear, and a rotating groove that matches the worm wheel.

[0013] In this utility model, a silicon microphone testing device is described. The silicon microphone to be tested is placed inside a clamping housing. The clamping housing is designed with a sliding plate, a limiting plate, and multiple sliding rods. These components work together to firmly clamp the silicon microphone. One end of each sliding rod is fixed with a clamping block and a rubber pad. They work together to fix the silicon microphone, while the rubber pad also acts as a buffer to prevent excessive clamping force from damaging the microphone. By starting motor two, the worm gear drives the worm wheel to rotate, thereby driving the rotating plate to rotate. Since the sliding rod is slidably installed in the arc concave hole of the rotating plate, as the rotating plate rotates, the sliding rod will move along the trajectory of the arc concave hole, thereby fixing the silicon microphone. Subsequently, by starting motor one, the threaded rod rotates, driving the spiral block to move along its axial direction. Since the spiral block is fixedly installed at the bottom of the sliding shell, the sliding shell will slide with the movement of the spiral block.

[0014] In this utility model, a silicon microphone testing device is described. The sliding shell has racks on both sides that mesh with gears at the bottom of the door panel. When the sliding shell moves, it will cause the door panel to rotate to open or close the opening of the soundproof shell. The wires and connectors are used to connect the silicon microphone to the internal circuit of the testing device. The connectors are held in the placement recess by two clamping arms to ensure the stability of the wires when not connected. During the test, the electric push rod is activated to push the testing device down to contact the silicon microphone. The testing unit components in the testing device will emit a test signal and transmit it to the silicon microphone through the testing probe. The signal received by the silicon microphone will be processed by the internal circuit and output. The testing device can analyze and display the test results. After the test is completed, the above steps can be reversed to remove the silicon microphone and close the door panel of the soundproof shell to prepare for the next test.

[0015] This utility model has a reasonable structural design and adopts a closed structure, which avoids the error problems of traditional open structure testing to a certain extent. Through the coordinated work of multiple structures, the position and test conditions of the silicon microphone can be precisely controlled, as well as reliable circuit connection and signal transmission, enabling efficient and accurate completion of silicon microphone testing. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a silicon microphone testing device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a silicon microphone testing device proposed in this utility model;

[0018] Figure 3 This is a partial structural cross-sectional view of a silicon microphone testing device proposed in this utility model;

[0019] Figure 4This is a partial cross-sectional view of a silicon microphone testing device proposed in this utility model;

[0020] Figure 5 for Figure 2 A magnified view of part A in the middle.

[0021] In the diagram: 1. Soundproof outer shell; 2. Door panel; 3. Electric push rod; 4. Rotating rod; 5. Detection device; 6. Test unit parts; 7. Sliding shell; 8. Sound-absorbing cotton board; 9. Clamping shell; 10. Pad block; 11. Magnetic strip plate; 12. Motor 1; 13. Threaded rod; 14. Spiral block; 15. Wire; 16. Clamping arm; 17. Connecting joint; 18. Motor 2; 19. Worm gear; 20. Worm wheel; 21. Sliding plate; 22. Rotating plate; 23. Limiting plate; 24. Sliding rod; 25. Clamping block; 26. Rubber pad; 27. Rack; 28. Gear; 29. ​​Detection probe. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1-5 A silicon microphone testing device includes: a soundproof housing 1, a sliding shell 7 slidably installed inside the soundproof housing 1, a motor 12 fixedly installed on one side of the soundproof housing 1, a threaded rod 13 fixedly installed at the output end of the motor 12, a helical block 14 threadedly connected to the threaded rod 13, the helical block 14 fixedly installed at the bottom end of the sliding shell 7, racks 27 fixedly installed on both sides of the sliding shell 7, a door panel 2 rotatably installed on the soundproof housing 1, a rotating rod 4 fixedly installed at the bottom end of the door panel 2, two gears 28 fixedly installed on the rotating rod 4, the two gears 28 meshing with the two racks 27 respectively, an electric push rod 3 fixedly installed at the top of the soundproof housing 1, a detection device 5 fixedly installed at the output end of the electric push rod 3, a test unit component 6 fixedly installed inside the detection device 5, and multiple detection probes 29 fixedly installed at the bottom end of the detection device 5, the detection probes 29 being electrically connected to the detection device 5.

[0024] In this embodiment, a clamping shell 9 is fixedly installed inside the sliding shell 7. A sliding plate 21 and a limiting plate 23 are fixedly installed inside the clamping shell 9. Multiple sliding rods 24 are slidably installed between the sliding plate 21 and the limiting plate 23. A rotating plate 22 is rotatably installed inside the clamping shell 9. Multiple arc-shaped concave holes are opened on the rotating plate 22. Multiple sliding rods 24 are slidably installed in the arc-shaped concave holes. A clamping block 25 is fixedly installed on one side of the sliding rod 24. A rubber pad 26 is fixedly installed on one side of the clamping block 25. Two sound-absorbing cotton plates 8 are fixedly installed inside the soundproof shell 1 to accommodate silicon microphones of different sizes.

[0025] In this embodiment, a pad 10 is fixedly installed on the sliding shell 7, a spiral block 14 is fixedly installed on the top of the pad 10, two clamping arms 16 are fixedly installed on one side of the spiral block 14, an electric wire 15 is fixedly installed on the top of the pad 10, a connecting connector 17 is fixedly installed on the top of the electric wire 15, the connecting connector 17 is disposed between the two clamping arms 16, and a placement recess matching the connecting connector 17 is opened between the two clamping arms 16 to ensure the stability of the structure.

[0026] In this embodiment, a second motor 18 is fixedly installed inside the clamping housing 9, and a worm gear 19 is fixedly installed at the output end of the second motor 18. A worm wheel 20 is fixedly installed on the outside of the rotating plate 22, and the worm wheel 20 meshes with the worm gear 19. Sliding strip holes are provided on both the sliding plate 21 and the limiting plate 23 for better transmission. A magnetic strip plate 11 is fixed on one side of the door panel 2, and one side of the magnetic strip plate 11 is in movable contact with the soundproof housing 1. Two small round rods are fixedly installed on the sliding rod 24, and sliding grooves matching the small round rods are provided on the sliding strip holes for more stable sliding.

[0027] In this embodiment, the soundproof housing 1 has a rotating hole that matches the gear 28, a moving groove that matches the spiral block 14, and an installation groove that matches the motor 12 for better connection. The clamping housing 9 has a fixing groove that matches the motor 28, a rotating groove that matches the worm 19, and a rotating groove that matches the worm wheel 20 for better rotation.

[0028] In this embodiment, during use, the silicon microphone to be tested is placed inside the clamping housing 9. Since the clamping housing 9 is internally designed with a sliding plate 21, a limiting plate 23, and multiple sliding rods 24, these components work together to securely clamp the silicon microphone. One end of each sliding rod 24 is fixed with a clamping block 25 and a rubber pad 26, which together secure the silicon microphone. The rubber pad 26 also acts as a buffer to prevent excessive clamping force from damaging the microphone. By starting the second motor 18, the worm gear 19 drives the worm wheel 20 to rotate, thereby driving the rotating plate 22 to rotate. Since the sliding rod 24 is slidably installed in the arc-shaped concave hole of the rotating plate 22, as the rotating plate 22 rotates, the sliding rod 24 moves along the trajectory of the arc-shaped concave hole, thus securing the silicon microphone. Subsequently, by starting the first motor 12, the threaded rod 13 rotates, driving the helical block 14 to move axially. Since the helical block 14 is fixedly installed at the bottom end of the sliding shell 7, the sliding shell 7 will... As the spiral block 14 moves, the sliding shell 7 slides. At the same time, the racks 27 on both sides of the sliding shell 7 mesh with the gears 28 at the bottom of the door panel 2. When the sliding shell 7 moves, it will drive the door panel 2 to rotate to open or close the opening of the soundproof shell 1. The wire 15 and the connector 17 are used to connect the silicon microphone to the circuit inside the test equipment. The connector 17 is held in the placement recess by two clamping arms 16 to ensure the stability of the wire 15 when not connected. During the test, the electric push rod 3 is activated to push the test device 5 down to contact the silicon microphone. The test unit part 6 inside the test device 5 will emit a test signal and transmit it to the silicon microphone through the test probe 29. The signal received by the silicon microphone will be processed by the internal circuit and output. The test equipment can analyze and display the test results. After the test is completed, the above steps can be reversed to remove the silicon microphone and close the door panel 2 of the soundproof shell 1 to prepare for the next test.

[0029] The silicon microphone testing device provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A silicon microphone testing device, characterized in that, include: A soundproof outer shell (1) is provided, and a sliding shell (7) is slidably installed inside the soundproof outer shell (1). A motor (12) is fixedly installed on one side of the soundproof outer shell (1). A threaded rod (13) is fixedly installed at the output end of the motor (12). A helical block (14) is threadedly connected to the threaded rod (13). The helical block (14) is fixedly installed at the bottom end of the sliding shell (7). A rack (27) is fixedly installed on both sides of the sliding shell (7). A door panel (2) is rotatably installed on the soundproof outer shell (1). The bottom end of the door panel (2) is fixed. A rotating rod (4) is installed, and two gears (28) are fixedly installed on the rotating rod (4). The two gears (28) mesh with two racks (27) respectively. An electric push rod (3) is fixedly installed at the top of the soundproof shell (1). A detection device (5) is fixedly installed at the output end of the electric push rod (3). A test unit component (6) is fixedly installed inside the detection device (5). Multiple detection probes (29) are fixedly installed at the bottom of the detection device (5). The detection probes (29) are electrically connected to the detection device (5).

2. The silicon microphone testing device according to claim 1, characterized in that, A clamping shell (9) is fixedly installed inside the sliding shell (7). A sliding plate (21) and a limiting plate (23) are fixedly installed inside the clamping shell (9). Multiple sliding rods (24) are slidably installed between the sliding plate (21) and the limiting plate (23). A rotating plate (22) is rotatably installed inside the clamping shell (9). Multiple arc-shaped concave holes are opened on the rotating plate (22). Multiple sliding rods (24) are slidably installed in the arc-shaped concave holes. A clamping block (25) is fixedly installed on one side of the sliding rod (24). A rubber pad (26) is fixedly installed on one side of the clamping block (25).

3. The silicon microphone testing device according to claim 1, characterized in that, A pad (10) is fixedly installed on the sliding shell (7). A spiral block (14) is fixedly installed on the top of the pad (10). Two clamping arms (16) are fixedly installed on one side of the spiral block (14). A wire (15) is fixedly installed on the top of the pad (10). A connector (17) is fixedly installed on the top of the wire (15). The connector (17) is located between the two clamping arms (16). A placement recess matching the connector (17) is opened between the two clamping arms (16).

4. The silicon microphone testing device according to claim 2, characterized in that, A second motor (18) is fixedly installed inside the clamping shell (9). A worm gear (19) is fixedly installed at the output end of the second motor (18). A worm wheel (20) is fixedly installed on the outside of the rotating plate (22). The worm wheel (20) meshes with the worm gear (19). Sliding strip holes are provided on both the sliding plate (21) and the limiting plate (23).

5. A silicon microphone testing device according to claim 4, characterized in that, A magnetic strip plate (11) is fixed on one side of the door panel (2). The magnetic strip plate (11) is in movable contact with the soundproof shell (1). Two small round rods are fixedly installed on the sliding rod (24). A sliding groove matching the small round rod is opened on the sliding strip hole.

6. The silicon microphone testing device according to claim 1, characterized in that, The soundproof housing (1) has a rotating hole that matches the gear (28), a moving groove that matches the spiral block (14), and an installation groove that matches the motor (12).

7. A silicon microphone testing device according to claim 2, characterized in that, The clamping housing (9) has a fixing groove that matches the second motor (18), a rotating groove that matches the worm (19), and a rotating groove that matches the worm wheel (20).

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