MIC test tool suitable for earphone board
By designing a MIC test fixture suitable for headphone boards, the problems of poor MIC and lack of test points in high-temperature processes on headphone boards were solved, efficient testing and out-of-tolerance testing were achieved, and product quality was improved.
Patent Information
- Application Number
- CN202422700417.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The high temperature process during the processing of the headphone board leads to poor MIC, and due to the size and circuit limitations of the PCB board, it is impossible to design test points, affecting product quality.
A MIC test fixture is designed, including a test board, a test mounting slot, a sound inlet, an expansion slot, external detection points and fixing components, to form a closed-loop detection, ensure that the sound source does not leak, and facilitate the removal and fixing of the headphone board.
It realizes the effective detection of the headphone board, solves the problem of no test points, improves the detection efficiency, and can simultaneously detect whether the mounting position is out of tolerance.
Smart Images
Figure CN223309960U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of earphone testing equipment, and in particular relates to a MIC testing tool suitable for an earphone board. Background Art
[0002] The electret MICs commonly used in headphones are of two types: pin-type and surface mount. During processing, pin-type MICs require high-temperature soldering, while surface mount MICs require reflow soldering and curing after assembly. Both MICs need to undergo high-temperature processes during processing, so there is a small probability that the MIC will malfunction due to high temperature and process requirements. Therefore, it is necessary to test the headphone board after soldering or SMT.
[0003] Generally, when designing the PCB of an earphone board, it is considered necessary to add test points for the MIC for testing. However, due to the size and circuit limitations of the PCB board, it is sometimes impossible or impossible to design test points, resulting in the inability to perform testing, which affects product quality. Utility Model Content
[0004] The purpose of the present invention is to provide a MIC test tool suitable for an earphone board, so as to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A MIC test tool suitable for an earphone board includes a test board, a test installation slot is provided on the surface of the test board, a sound inlet hole is provided at one end of the test installation slot, an expansion slot is provided on one side of the sound inlet hole, and an external detection point is provided on the side of the expansion slot away from the sound inlet hole.
[0007] By adopting the above technical solution: during testing, the test installation slot is used to place the headphone board, and during testing, the MIC is aligned with the sound inlet, which can effectively prevent the sound leakage of the sound source. The expansion slot is convenient for taking and placing the headphone board. The external monitoring point is used to connect with the BOT circuit of the headphone board and then connected to the input part of the device, so that the entire test forms a closed loop for testing.
[0008] Preferably, the expansion groove is a waist-shaped groove.
[0009] By adopting the above technical solution, the waist-shaped groove facilitates the taking and placing of the earphone plate.
[0010] Preferably, arc-shaped clamping angles are further provided at both ends of the test installation slot.
[0011] By adopting the above technical solution: the arc-shaped clamping angle is adapted to the edge of the earphone plate, which can not only limit the position, but also prevent mistakes.
[0012] Preferably, a nameplate is installed on the surface of the test board.
[0013] By adopting the above technical solution: the nameplate is named according to the project or product model, which is convenient for query and recording.
[0014] Preferably, a U-shaped slot is provided at the bottom of the test plate.
[0015] By adopting the above technical solution: the U-shaped slot makes it easy to connect the tooling with external testing equipment, making testing easier.
[0016] Preferably, a fixing component is provided on the surface of the test board, and the fixing component is located above the test installation slot.
[0017] By adopting the above technical solution, the fixing component can fix the earphone board placed inside the test installation slot to ensure the stability of the connection during testing.
[0018] Preferably, the fixing assembly includes a support seat and an elastic band, the support seat is installed on both sides of the expansion slot, and both ends of the elastic band are respectively connected to the support seats on both sides.
[0019] By adopting the above technical solution, the elastic band can play the role of limiting and supporting reinforcement after the earphone plate is installed, preventing the earphone plate from detaching and improving the stability of the connection.
[0020] The technical effects and advantages of this utility model are:
[0021] 1. This tool solves the problem of no test points on the headphone board by testing the coordination between the mounting slot, the sound inlet, the expansion slot, and the external test points. It can also simultaneously detect whether the mounting position is out of tolerance, and improve inspection efficiency.
[0022] 2. The expansion slot of this tool can easily take out the product before and after testing;
[0023] 3. Nameplates named according to project and product model are convenient for query and record. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0025] Figure 2 for Figure 1 Schematic diagram of the cross-section structure;
[0026] Figure 3 This is a structural diagram of the test installation slot of the utility model.
[0027] In the figure: 1. Test board; 2. Test installation slot; 3. Sound inlet; 4. Expansion slot; 5. External detection point; 6. Arc-shaped corner; 7. Nameplate; 8. U-shaped slot; 9. Fixing component; 10. Support base; 11. Elastic band. DETAILED DESCRIPTION
[0028] The following is a combination of the appended examples of the present invention Figure 1-Figure 3 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. The specific embodiments described here are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0029] Example:
[0030] like Figure 1-Figure 3 The utility model provides a MIC test tool suitable for an earphone board, including a test board 1, a test installation slot 2 is opened on the surface of the test board 1, a sound inlet 3 is set at one end inside the test installation slot 2, an expansion slot 4 is set on one side of the sound inlet 3, and an external detection point 5 is set on the side of the expansion slot 4 away from the sound inlet 3.
[0031] During testing, the test installation slot 2 is used to place the headphone board, and during testing, the MIC is aligned with the sound inlet 3, which can effectively prevent the sound leakage from the sound source. The expansion slot 4 is convenient for taking and placing the headphone board. The external monitoring point is used to connect with the BOT circuit of the headphone board, and then connected to the input part of the device, so that the entire test forms a closed loop for testing.
[0032] The expansion slot 4 is a waist-shaped slot, which is convenient for taking and placing the earphone board.
[0033] Arc-shaped clamping angles 6 are also provided at both ends of the test installation slot 2. The arc-shaped clamping angles 6 are adapted to the edges of the earphone plate, which can not only limit the position but also prevent mistakes.
[0034] A nameplate 7 is provided on the surface of the test board 1. The nameplate 7 is named according to the project or product model to facilitate query and record.
[0035] A U-shaped slot 8 is provided at the bottom of the test board 1 , and the U-shaped slot facilitates connection of the tooling with external testing equipment, thereby facilitating testing.
[0036] A fixing component 9 is provided on the surface of the test board 1 and is located above the test installation slot 2. The fixing component 9 can fix the earphone board placed inside the test installation slot 2 to ensure the stability of the connection during testing.
[0037] The fixing component 9 includes a support seat 10 and an elastic band 11. The support seat 10 is installed on both sides of the expansion slot 4. The two ends of the elastic band 11 are connected to the support seats 10 on both sides. The elastic band 11 can play a role in limiting and supporting reinforcement after the headphone board is installed, preventing the headphone board from detaching and improving the stability of the connection.
[0038] In summary, this MIC test fixture can not only solve the problem of no test points on the headphone board, but also simultaneously detect whether the mounting position is out of tolerance and improve the detection efficiency.
[0039] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A MIC test tool suitable for an earphone board, comprising a test board (1), characterized in that: A test installation slot (2) is provided on the surface of the test board (1); a sound inlet hole (3) is provided at one end of the interior of the test installation slot (2); an expansion slot (4) is provided on one side of the sound inlet hole (3); and an external detection point (5) is provided on a side of the expansion slot (4) away from the sound inlet hole (3).
2. The MIC test tool for an earphone board according to claim 1, characterized in that: The expansion groove (4) is a waist-shaped groove.
3. The MIC test tool for an earphone board according to claim 1, characterized in that: Arc-shaped clamping angles (6) are also provided at both ends of the test installation slot (2).
4. The MIC test tool for an earphone board according to claim 1, characterized in that: A nameplate (7) is mounted on the surface of the test board (1).
5. The MIC test tool for an earphone board according to claim 1, characterized in that: A U-shaped slot (8) is provided at the bottom of the test plate (1).
6. The MIC test tool for an earphone board according to claim 1, characterized in that: A fixing assembly (9) is provided on the surface of the test board (1), and the fixing assembly (9) is located above the test installation slot (2).
7. The MIC test tool for an earphone board according to claim 6, characterized in that: The fixing assembly (9) comprises a support seat (10) and an elastic band (11); the support seat (10) is installed on both sides of the expansion slot (4); and the two ends of the elastic band (11) are respectively connected to the support seats (10) on both sides.