Testing device for miniature electret microphone amplifier
By adjusting the fixing method and detector position, the adaptability of the miniature electret microphone amplifier testing device to amplifiers of different sizes has been solved, achieving efficient and accurate testing results.
Patent Information
- Application Number
- CN202520654276.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-04-09
AI Technical Summary
Existing miniature electret microphone amplifier testing devices cannot fix amplifiers of different sizes, resulting in poor versatility and compatibility of the testing devices and affecting testing efficiency.
An adjustable fixing method is adopted, in which the amplifier is fixed by a threaded rod and a fixed plate, and the movement and adjustment of the telescopic inner rod and the detector fixing bracket are combined to achieve precise fixing and position adjustment of the amplifier.
This improves the versatility and compatibility of the testing equipment, ensures precise matching between the amplifier and the detector, and enhances the flexibility and accuracy of the test.
Smart Images
Figure CN224006806U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of testing devices for miniature electret microphone amplifiers, specifically a testing device for miniature electret microphone amplifiers. Background Technology
[0002] A miniature electret microphone amplifier is an electronic component used to amplify the output signal of a miniature electret microphone. It is typically designed to be very small in size and is mainly used in: 1. Consumer electronics: widely used in mobile phones, tablets, laptops, digital cameras, and other devices for voice calls, recording, and voice recognition; 2. Medical equipment: used in hearing aids, stethoscopes, and other devices to improve the clarity and audibility of sound; 3. Industrial control: used in some industrial automation equipment for sound detection and control.
[0003] However, some existing testing devices for miniature electret microphone amplifiers cannot consistently test amplifiers of different sizes, which not only reduces the versatility and compatibility of the testing device, but also affects the testing efficiency of the testing device.
[0004] Therefore, those skilled in the art have provided a testing device for a miniature electret microphone amplifier to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to provide a testing device for a miniature electret microphone amplifier to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A testing device for a miniature electret microphone amplifier includes a main body of the testing equipment; the upper surface of the main body of the testing equipment has a groove in the middle of the interior, a placement groove, and fixed abutments are slidably connected to the left and right sides of the placement groove, and a protective pad is fixedly connected to one side of the fixed abutment; the front and rear sides of the fixed abutment have a plurality of abutment sliding grooves, and a threaded rod is fixedly connected to the other side of the fixed abutment.
[0008] As a further embodiment of this utility model, the upper four ends of the main body of the testing equipment are fixedly connected with retractable outer rods, and the upper side of the retractable outer rods is slidably connected with retractable inner rods.
[0009] As a further embodiment of this utility model, a first connecting rod is fixedly connected to one side of the retractable inner rod, an outer fixing block is fixedly connected to the outer side of the first connecting rod, and a second connecting rod is fixedly connected to one side of the outer fixing block.
[0010] As a further embodiment of this utility model, the lower surface of the second connecting rod has a groove in the middle of which is a fixing bracket groove, and a detector fixing bracket is slidably connected to the outside of the fixing bracket groove.
[0011] As a further embodiment of this utility model, a detector is movably connected in the middle of the detector mounting bracket, and several detection probes are fixedly connected to the lower side of the detector.
[0012] As a further embodiment of this utility model, the detector mounting bracket has an upper abutment plate slidably connected to the left and right sides of the inner middle. Several electric push rods are fixedly connected to one side of the upper abutment plate, and upper abutment plate sliding grooves are cut on the front and rear sides of the upper abutment plate.
[0013] As a further embodiment of this utility model, a fixed base is fixedly connected to the four ends of the lower side of the main body of the testing equipment.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. By using an adjustable fixing method to fix the amplifier, the main body of the test equipment can be adapted to amplifiers of different sizes, improving the versatility and compatibility of the main body of the test equipment and reducing the trouble of replacing the main body of the test equipment due to different amplifier sizes. Moreover, during the test, it may be necessary to adjust the position of the amplifier according to different test requirements. The adjustable fixing method can easily realize the fine adjustment of the amplifier in the horizontal direction, so that the amplifier can accurately match the detector, improving the flexibility and adaptability of the main body of the test equipment.
[0016] 2. The vertical height of the detector can be adjusted by activating the telescopic inner rod, and the horizontal position of the detector can be adjusted by moving the detector mounting bracket. This not only allows the detector to better adapt to various test scenarios and requirements, ensuring the accuracy and effectiveness of the test, but also ensures that the distance and angle between the detector and the amplifier under test are in the optimal state by adjusting the position of the detector, thereby improving the accuracy and reliability of the test. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a test device for a miniature electret microphone amplifier.
[0018] Figure 2 This is a plan view of a test device for a miniature electret microphone amplifier.
[0019] Figure 3 This is a schematic diagram of the magnified structure at point A in a test device for a miniature electret microphone amplifier.
[0020] Figure 4This is a schematic diagram of the magnified structure at point B in a test device for a miniature electret microphone amplifier.
[0021] In the diagram: 1-Test equipment body, 2-Placement slot, 3-Fixed support plate, 4-Protective pad, 5-Support plate slide groove, 6-Threaded rod, 7-Retractable outer rod, 8-Retractable inner rod, 9-First connecting rod, 10-Outer fixing block, 11-Second connecting rod, 12-Fixed frame slide groove, 13-Detector fixing frame, 14-Detector, 15-Detection probe, 16-Upper support plate, 17-Electric push rod, 18-Upper support plate slide groove, 19-Fixed base. Detailed Implementation
[0022] Please see Figures 1-4 In this embodiment of the present invention, a testing device for a miniature electret microphone amplifier includes a testing equipment body 1; the upper surface of the testing equipment body 1 has a groove 2 in the middle, and fixed abutment plates 3 are slidably connected to the left and right sides inside the groove 2, with a protective pad 4 fixedly connected to one side of the fixed abutment plate 3; the front and rear sides of the fixed abutment plate 3 have grooves 5 for abutment sliding, and a threaded rod 6 is fixedly connected to the other side of the fixed abutment plate 3; a telescopic outer rod 7 is fixedly connected to the four ends of the upper side of the testing equipment body 1, and a telescopic inner rod 8 is slidably connected to the upper side of the telescopic outer rod 7; a first connecting rod 9 is fixedly connected to one side of the telescopic inner rod 8, and a threaded rod 6 is fixedly connected to the outer side of the first connecting rod 9. An external fixing block 10 is provided, and a second connecting rod 11 is fixedly connected to one side of the external fixing block 10. A fixing frame slide groove 12 is cut in the middle of the lower surface of the second connecting rod 11, and a detector fixing frame 13 is slidably connected to the outside of the fixing frame slide groove 12. A detector 14 is movably connected in the middle of the inside of the detector fixing frame 13, and several detection probes 15 are fixedly connected to the lower side of the detector 14. An upper abutment plate 16 is slidably connected to the left and right sides of the middle of the inside of the detector fixing frame 13, and several electric push rods 17 are fixedly connected to one side of the upper abutment plate 16. An upper abutment plate slide groove 18 is cut in the front and rear sides of the upper abutment plate 16. A fixing base 19 is fixedly connected to the four ends of the lower side of the main body 1 of the testing equipment.
[0023] The working principle of this utility model is as follows: When testing a miniature electret microphone amplifier, the amplifier to be tested can be placed in the middle of the placement slot 2. Then, the threaded rod 6 is rotated, which will drive the fixed abutment 3 and the protective pad 4 to move along the abutment groove 5 towards one side of the amplifier until the protective pad 4 is in complete contact with the amplifier. At this point, the amplifier is fixed inside the placement slot 2. Furthermore, an adjustable fixing method is used to fix the amplifier, which not only allows the test equipment body 1 to adapt to amplifiers of different sizes, improving the versatility and compatibility of the test equipment body 1 and reducing the hassle of replacing the test equipment body 1 due to different amplifier sizes, but also allows for easy fine-tuning of the amplifier's horizontal position during testing, enabling the amplifier to accurately match the detector 14, thus improving the flexibility of the test equipment body 1. Adaptability is achieved by activating the telescopic inner rod 8, which moves downwards, thereby moving the first connecting rod 9, the outer fixing block 10, the second connecting rod 11, and the detector mounting bracket 13 downwards. The amplifier's packaged circuit can then be tested using the detector 14 and the test probe 15. When the horizontal position of the detector 14 needs adjustment, the detector mounting bracket 13 is simply moved horizontally along the mounting bracket slide 12 until it reaches the appropriate position, at which point it is fixed. The vertical height of the detector 14 can be adjusted by activating the telescopic inner rod 8, and the horizontal position of the detector 14 can be adjusted by moving the detector mounting bracket 13. This not only allows the detector 14 to better adapt to various test scenarios and requirements, ensuring the accuracy and effectiveness of the test, but also ensures that the distance and angle between the detector 14 and the amplifier under test are optimal by adjusting the position of the detector 14, thereby improving the accuracy and reliability of the test.
[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A testing device for a miniature electret microphone amplifier, comprising a testing device main body (1) and a placing groove (2), characterized in that, The upper surface of the test equipment body (1) is internally grooved in the middle to form a placing groove (2), the left and right sides of the placing groove (2) are slidably connected with fixed abutting plates (3), one side of the fixed abutting plate (3) is fixedly connected with a protective pad (4); the front and rear sides of the fixed abutting plate (3) are grooved to form a plurality of abutting plate sliding grooves (5), and the other side of the fixed abutting plate (3) is fixedly connected with a threaded rod (6).
2. A test device for a miniature electret microphone amplifier according to claim 1, characterized in that The upper side of the test equipment body (1) is fixedly connected with telescopic outer rods (7) at four ends, and the upper side of the telescopic outer rod (7) is slidably connected with telescopic inner rods (8).
3. A test device for a miniature electret microphone amplifier according to claim 2, characterized in that One side of the telescopic inner rod (8) is fixedly connected with a first connecting rod (9), the outer side of the first connecting rod (9) is fixedly connected with an outer fixed block (10), and one side of the outer fixed block (10) is fixedly connected with a second connecting rod (11).
4. A test device for a miniature electret microphone amplifier according to claim 3, characterized in that The lower surface of the second connecting rod (11) is internally grooved in the middle to form a fixed frame sliding groove (12), and the outer side of the fixed frame sliding groove (12) is slidably connected with a detector fixed frame (13).
5. A test device for a miniature electret microphone amplifier according to claim 4, characterized in that The inner middle part of the detector fixed frame (13) is movably connected with a detector (14), and the lower side of the detector (14) is fixedly connected with a plurality of detection probes (15).
6. A test device for a miniature electret microphone amplifier according to claim 4, wherein The inner middle left and right sides of the detector fixed frame (13) are slidably connected with upper abutting plates (16), one side of the upper abutting plate (16) is fixedly connected with a plurality of electric push rods (17), and the front and rear sides of the upper abutting plate (16) are grooved to form upper abutting plate sliding grooves (18).
7. The test device of a miniature electret microphone amplifier according to claim 1, wherein, The lower side of the test equipment body (1) is fixedly connected with a fixed base (19).