A micro-speaker jitter amount detection jig

Abstract

The utility model discloses a kind of micro-speaker shaking amount detection fixtures, which belong to loudspeaker detection equipment technical field, including workbench;Positioning mechanism, the positioning mechanism includes the support table of fixed connection in the workbench upper end, the upper end of the support table is equipped with rectangular inner groove, bidirectional threaded rod is rotatably connected in the left and right two sides inner wall of rectangular inner groove, the two threaded ends of bidirectional threaded rod are all threadedly connected with sliding block, the opposite side of two sliding block is all equipped with rectangular slot, the opposite side of two sliding block is all provided with clamping block.The equipment is set positioning mechanism in view of use problem, by controlling the opposite movement of two clamping blocks, the stable positioning of micro-speaker can be conveniently realized, the smooth progress of shaking amount detection is guaranteed, and two clamping blocks can be conveniently replaced to meet the positioning needs of different specifications micro-speaker, and the practicability is better.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker testing equipment technology, and in particular to a jig for detecting the vibration of a miniature loudspeaker. Background Technology

[0002] With the trend of miniaturization in electronic devices, the performance testing of miniature speakers, as key components of audio output, is becoming increasingly important. Jitter testing is a crucial part of this, as it directly affects the sound quality and stability of miniature speakers.

[0003] Currently, when testing the jitter of miniature loudspeakers, the miniature loudspeakers are prone to positional shifts due to external interference or their own vibrations, leading to inaccurate test data. Therefore, they need to be positioned before testing. However, the positioning mechanisms on existing testing fixtures are cumbersome to operate, affecting the actual testing efficiency. In addition, these positioning mechanisms are usually fixed structures, making it difficult to flexibly meet the positioning requirements of loudspeakers of different sizes. Therefore, to solve these problems, designing a jitter testing fixture for miniature loudspeakers is something we need to consider. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a jig for detecting the jitter of a miniature loudspeaker. To address usability issues, a positioning mechanism is incorporated. By controlling the two clamping blocks to move in opposite directions, stable positioning of the miniature loudspeaker can be easily achieved, ensuring smooth jitter detection. Furthermore, the two clamping blocks can be easily replaced to meet the positioning requirements of miniature loudspeakers of different specifications, demonstrating good practicality.

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

[0006] A jig for detecting the vibration of a miniature loudspeaker includes a worktable and a positioning mechanism. The positioning mechanism includes a support platform fixedly connected to the upper end of the worktable. A rectangular inner groove is formed at the upper end of the support platform. A bidirectional threaded rod is rotatably connected between the inner walls of the left and right sides of the rectangular inner groove. A slider is threaded to each of the two threaded ends of the bidirectional threaded rod. A rectangular slot is formed on the facing sides of the two sliders. A clamping block is provided on the facing sides of the two sliders. A rectangular insert is fixedly connected to the opposite sides of the two clamping blocks. A cylindrical through groove is formed at the upper end of the two rectangular inserts. A threaded through groove is formed at the upper end of the two sliders. Bolts are threaded into the two threaded through grooves.

[0007] Preferably, both rectangular inserts are slidably connected to the inner wall of the corresponding rectangular slot, and the lower ends of both bolts penetrate the corresponding cylindrical through groove and are slidably connected to the inner wall of the cylindrical through groove.

[0008] Preferably, a guide rod is fixedly connected between the inner walls of the left and right sides of the rectangular inner groove, and the guide rod passes through the two sliders and is slidably connected to the two sliders.

[0009] Preferably, the right end of the bidirectional threaded rod penetrates the right inner wall of the rectangular inner groove and is fixedly connected to a rotating block, and rubber pads are provided on the inner sides of both clamping blocks.

[0010] Preferably, the detection mechanism includes a frame fixedly connected to the upper end of the workbench, a controller is provided on the front side of the frame, and a laser displacement sensor is provided on the inner top of the frame.

[0011] Preferably, the upper end of the support platform is provided with a placement groove and a wire groove.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] A positioning mechanism is provided, which drives two clamping blocks to move towards each other by rotating the rotating block. With the help of rubber pads, the miniature speaker can be easily and quickly positioned stably at the center of the support platform, effectively reducing the actual positioning workload and ensuring the smooth progress of subsequent vibration detection. At the same time, by removing the bolts and using rectangular slots, rectangular inserts, cylindrical through slots, and threaded through slots, the two clamping blocks can be easily replaced to meet the positioning requirements of miniature speakers of different sizes. Overall, it has good practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a miniature loudspeaker jitter detection fixture proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the positioning mechanism;

[0016] Figure 3 for Figure 2 sectional unfolded view;

[0017] Figure 4 for Figure 3 Enlarged view of point A.

[0018] In the diagram: 1. Workbench, 2. Support platform, 3. Rectangular inner groove, 4. Bidirectional threaded rod, 5. Slider, 6. Rectangular slot, 7. Clamping block, 8. Rectangular insert block, 9. Columnar through groove, 10. Threaded through groove, 11. Bolt, 12. Guide rod, 13. Rotating block, 14. Rubber pad, 15. Frame, 16. Controller, 17. Laser displacement sensor, 18. Placement groove, 19. Wire groove. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-4 A miniature loudspeaker jitter detection fixture includes a worktable 1;

[0021] The system also includes a testing mechanism for detecting the vibration of the miniature speaker. The testing mechanism includes a frame 15 fixedly connected to the upper end of the workbench 1. A controller 16 is provided on the front side of the frame 15. The controller 16 can control the laser displacement sensor 17 to detect the vibration of the miniature speaker and collect relevant test data. The laser displacement sensor 17 is provided on the inner top of the frame 15. This is existing technology. The laser emitting end of the laser displacement sensor 17 is vertically aligned with the center of the support platform 2 to ensure that it can be aligned with the diaphragm of the miniature speaker later.

[0022] The positioning mechanism includes a support platform 2 fixedly connected to the upper end of the worktable 1. The upper end of the support platform 2 is provided with a placement groove 18 and a wire groove 19. The placement groove 18 is used to place the miniature speaker, and the wire groove 19 is used to place the connecting wire of the miniature speaker. The upper end of the support platform 2 is provided with a rectangular inner groove 3. A bidirectional threaded rod 4 is rotatably connected between the inner walls of the left and right sides of the rectangular inner groove 3. The right end of the bidirectional threaded rod 4 passes through the inner wall of the right side of the rectangular inner groove 3 (a bearing is provided at the penetration point) and is fixedly connected to a rotating block 13. Both threaded ends of the bidirectional threaded rod 4 are threadedly connected to sliders 5. A guide rod 12 is fixedly connected between the inner walls of the left and right sides of the rectangular inner groove 3. The guide rod 12 passes through the two sliders 5 and is slidably connected to the two sliders 5.

[0023] The two sliders 5 each have a rectangular slot 6 on their opposing sides and a clamping block 7 on their opposing sides. By controlling the two clamping blocks 7 to move towards each other, the miniature speaker in the placement slot 18 can be stably positioned at the center of the support platform 2 for subsequent vibration detection. The inner sides of the two clamping blocks 7 are provided with rubber pads 14, which can improve the stability of the miniature speaker positioning. The opposite sides of the two clamping blocks 7 are fixedly connected with rectangular inserts 8. The two rectangular inserts 8 are slidably connected to the inner wall of the corresponding rectangular slot 6. The upper end of the two rectangular inserts 8 each has a cylindrical through groove 9. The upper end of the two sliders 5 each has a threaded through groove 10. The two threaded through grooves 10 each have a bolt 11 threadedly connected to them. The lower end of the two bolts 11 passes through the corresponding cylindrical through groove 9 and is slidably connected to the inner wall of the cylindrical through groove 9. By using a tool to remove the bolts 11, the rectangular inserts 8 can be removed from the rectangular slot 6, thereby realizing the convenient replacement of the clamping blocks 7 to meet the stable positioning of miniature speakers of different specifications.

[0024] In this invention, during use, the operator first places the miniature speaker to be tested in the placement slot 18 on the support platform 2 (ensuring that the sound output end of the miniature speaker faces upwards), and places the connecting wire of the miniature speaker in the wire slot 19. Then, the rotating block 13 is rotated to drive the bidirectional threaded rod 4 to rotate, which drives the two sliders 5 to move towards each other, and drives the two clamping blocks 7 to move towards each other until the rubber pads 14 on the inner side of the two clamping blocks 7 are in contact with the outer side of the miniature speaker. In this way, the miniature speaker can be stably positioned at the center of the support platform 2. The whole positioning process is relatively convenient and reduces the actual positioning workload.

[0025] After completing the above positioning operation, the operator can control the laser displacement sensor 17 to start working through the controller 16, so that the laser of the laser displacement sensor 17 is emitted to the center of the support platform 2 (i.e. the diaphragm of the miniature speaker), and the miniature speaker is started at the same time. When the miniature speaker is working, the diaphragm on it will vibrate. At this time, the laser displacement sensor 17 can detect the vibration amplitude of the diaphragm in real time, so as to detect the vibration of the miniature speaker and collect relevant detection data.

[0026] When testing miniature speakers of different specifications, tools can be used to remove the two bolts 11, and the two rectangular inserts 8 can be removed from their corresponding rectangular slots 6 in sequence to disassemble the two clamps 7. Then, a clamp 7 of the appropriate specification can be replaced (the clamp 7 can fit tightly against the outside of the miniature speaker). The rectangular inserts 8 on the two clamps 7 are inserted into their corresponding rectangular slots 6 in sequence. Finally, the bolts 11 are installed in sequence so that the bolts 11 are threadedly connected to the corresponding threaded through slots 10 and pass through the corresponding cylindrical through slots 9. This allows for the convenient replacement of the two clamps 7, meeting the positioning requirements of miniature speakers of different specifications, and has good practicality.

[0027] 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 fixture for detecting the jitter of a miniature loudspeaker, characterized in that, include: Workbench (1); The positioning mechanism includes a support platform (2) fixedly connected to the upper end of the workbench (1). The upper end of the support platform (2) is provided with a rectangular inner groove (3). A bidirectional threaded rod (4) is rotatably connected between the inner walls of the left and right sides of the rectangular inner groove (3). A slider (5) is threadedly connected to both threaded ends of the bidirectional threaded rod (4). A rectangular slot (6) is provided on the opposite side of the two sliders (5). A clamping block (7) is provided on the opposite side of the two sliders (5). A rectangular insert (8) is fixedly connected to the opposite side of the two clamping blocks (7). A cylindrical through groove (9) is provided at the upper end of the two rectangular inserts (8). A threaded through groove (10) is provided at the upper end of the two sliders (5). A bolt (11) is threadedly connected in the two threaded through grooves (10). A testing mechanism for detecting the amount of jitter in a miniature loudspeaker.

2. The miniature loudspeaker jitter detection fixture according to claim 1, characterized in that, Both rectangular inserts (8) are slidably connected to the inner wall of the corresponding rectangular slot (6), and the lower ends of both bolts (11) penetrate the corresponding cylindrical through slot (9) and are slidably connected to the inner wall of the cylindrical through slot (9).

3. The miniature loudspeaker jitter detection fixture according to claim 1, characterized in that, A guide rod (12) is fixedly connected between the inner walls of the left and right sides of the rectangular inner groove (3). The guide rod (12) passes through the two sliders (5) and is slidably connected to the two sliders (5).

4. The miniature loudspeaker jitter detection fixture according to claim 1, characterized in that, The right end of the bidirectional threaded rod (4) passes through the right inner wall of the rectangular inner groove (3) and is fixedly connected to a rotating block (13). Rubber pads (14) are provided on the inner sides of the two clamping blocks (7).

5. The miniature loudspeaker jitter detection fixture according to claim 1, characterized in that, The detection mechanism includes a frame (15) fixedly connected to the upper end of the workbench (1), a controller (16) is provided on the front side of the frame (15), and a laser displacement sensor (17) is provided on the inner top of the frame (15).

6. The miniature loudspeaker jitter detection fixture according to claim 1, characterized in that, The upper end of the support platform (2) is provided with a placement groove (18) and a wire groove (19).

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