Earphone semi-finished product testing device

Abstract

The utility model provides an earphone semi-finished product test device, which comprises a mounting rack, an FPC positioning tool, a test pressing mechanism and a sounding detection mechanism, the FPC positioning tool and the test pressing mechanism are both arranged on the mounting rack, and the sounding detection mechanism is arranged on the mounting rack or outside the mounting rack; the FPC positioning jig comprises a positioning column, a fixing pressing rod and a supporting platform, the supporting platform is arranged on the mounting frame, the positioning column and the fixing pressing rod are both arranged on the supporting platform, the positioning column is matched with a positioning hole in the earphone semi-finished product FPC, the positioning column positions the earphone semi-finished product FPC on the supporting platform, and the fixing pressing rod is arranged on the supporting platform. The fixing pressing rod can press and fix the earphone semi-finished product FPC on the supporting platform. The device is used for testing the sound production of the loudspeaker in earphone production and assembly.

Description

Technical Field

[0001] This patent relates to the technical field of headphone production and assembly equipment, and specifically to a semi-finished headphone testing device. Background Art

[0002] Headphones are an electroacoustic conversion device. When receiving an electrical signal from a media player or receiver, the speaker therein converts the electrical signal into an audible sound wave, thereby providing voice information to people. Headphones include circuit boards, speakers, microphones, etc. Electronic devices such as speakers and microphones need to be electrically connected to the circuit board, and the circuit board circuit provides electrical signals to achieve sound. Therefore, speakers and microphones are generally provided with connecting wires to facilitate electrical connection to the circuit board circuit. In order to facilitate the electrical connection of speakers and microphones with the circuit board, the connecting wires of speakers and microphones usually use FPC, so that the speakers and microphones can be inserted into the plug-in terminals of the circuit board when installed on the circuit board. In order to ensure the yield rate of the headphone production, before the FPC of the speaker and microphone is inserted into the plug-in terminal of the circuit board, the speaker of the headphone needs to be tested for sound. After ensuring that the speaker can sound normally, the FPC of the speaker and microphone is inserted into the plug-in terminal of the circuit board to complete the assembly of the headphone. Therefore, it is necessary to electrically connect the probe to the metal exposed interface of the speaker and microphone FPC to test the speaker for sound. When testing current speakers, the FPC is generally not positioned, resulting in unstable FPC fixation during speaker and microphone testing. As a result, the probe may not be able to accurately contact the exposed metal interface of the speaker and microphone FPC, and the electrical signal cannot be transmitted to the speaker. Even a normal speaker has difficulty in making a normal sound, thus affecting the accuracy of the speaker test when testing semi-finished headphones. Utility Model Content

[0003] In order to improve the accuracy of speaker testing when testing semi-finished headphones, the technical solution of this patent is: a semi-finished headphone testing device, including a mounting frame, an FPC positioning fixture, a test pressing mechanism and a sound detection mechanism, the FPC positioning fixture and the test pressing mechanism are both arranged on the mounting frame, and the sound detection mechanism is arranged on the mounting frame or outside the mounting frame; the FPC positioning fixture includes a positioning column, a fixed pressure rod and a support platform, the support platform is arranged on the mounting frame, the positioning column and the fixed pressure rod are both arranged on the support platform, the positioning column is adapted to the positioning hole on the semi-finished headphone FPC, the positioning column positions the semi-finished headphone FPC on the support platform, and the fixed pressure rod can press the semi-finished headphone FPC on the support platform.

[0004] Furthermore, the FPC positioning fixture also includes a magnetic fixing block, which is arranged on the supporting platform; the fixed pressure rod is a metal rod or a ferrite rod that can be adsorbed by the magnetic fixing block, and the fixed pressure rod can be magnetically attracted to the magnetic fixing block.

[0005] Furthermore, the FPC positioning fixture also includes a rocker bar and a swing drive rod, the rocker bar is swingably set on the support platform, the swing drive rod is set on the rocker bar, the fixed pressure rod is set on the rocker bar, and the fixed pressure rod presses or releases the semi-finished FPC of the earphone as the rocker bar swings.

[0006] Furthermore, the positioning posts and the magnetic fixing blocks are each provided in two groups, and the two groups of positioning posts are both provided between the two groups of magnetic fixing blocks.

[0007] Furthermore, the test pressing mechanism includes a lifting drive assembly, a probe fixing plate and a test probe, the lifting drive assembly is arranged on a mounting frame, the probe fixing plate is arranged at the lifting movable end of the lifting drive assembly, and the test probe is fixed on the probe fixing plate.

[0008] Furthermore, the probe fixing plate includes an upper clamping plate and a lower clamping plate, one of the upper clamping plate and the lower clamping plate is fixed to the lifting movable end of the lifting drive assembly, the upper clamping plate and the lower clamping plate are fixed together, the cross-section of the middle part of the test probe is larger than the cross-section on both sides, and the middle part of the test probe is clamped and fixed between the upper clamping plate and the lower clamping plate.

[0009] Further, the test probe comprises a syringe portion, a needle body portion and a spring, the needle body portion is elastically arranged in the barrel of the syringe portion through the spring, and the needle body portion passes through the barrel of the syringe portion.

[0010] Furthermore, the needle body portion includes a mounting portion and an electrical contact portion, the outer diameter of the mounting portion is larger than the outer diameter of the electrical contact portion, the mounting portion is inserted into the barrel of the syringe portion, the needle body portion passes through the barrel of the syringe portion, and the middle portion of the barrel of the syringe portion contracts inwardly to form a contraction portion, and the contraction portion limits the needle body portion on the syringe portion.

[0011] Furthermore, the mounting frame includes a fixing seat and a gantry, the gantry is arranged on the fixing seat, the FPC positioning fixture is arranged on the fixing seat, and the test pressing mechanism is arranged on the gantry.

[0012] Furthermore, the sound detection mechanism includes an artificial ear and a sound transmission tube, one end of the sound transmission tube is connected to the artificial ear, and the other end of the sound transmission tube is connected to the semi-finished earphone to be tested.

[0013] The beneficial effects achieved by this patent are mainly as follows: the semi-finished headphone testing device includes an FPC positioning jig, a test pressing mechanism and a sound detection mechanism. When the semi-finished headphone testing device is working, the FPC of the semi-finished headphone speaker and microphone is fixed by the FPC positioning jig, and the semi-finished headphone FPC is pressed down by the test pressing mechanism to connect the electrical signal to the speaker of the semi-finished headphone, and the sound detection mechanism is used to detect whether the speaker of the semi-finished headphone sounds normally. Therefore, during the production and assembly of the headphone, before the FPC of the speaker and microphone is inserted into the plug-in terminal of the circuit board, the speaker of the headphone is tested for sound. After ensuring that the speaker sounds normally, the FPC of the speaker and microphone is inserted into the plug-in terminal of the circuit board to complete the assembly of the headphone, thereby ensuring the yield rate of the speaker installed in the headphone, thereby improving the yield rate of the production and assembly of the headphone. The FPC positioning fixture includes a positioning column, a fixed pressure rod and a supporting platform. When the semi-finished earphone is tested, the positioning column on the supporting platform is just inserted into the positioning hole on the semi-finished earphone FPC to position the semi-finished earphone FPC, and then the semi-finished earphone FPC is pressed onto the supporting platform by the fixed pressure rod, thereby ensuring that the semi-finished earphone FPC is stably fixed during the test. The test pressing mechanism can accurately abut the exposed metal interface of the speaker FPC to pass the electrical signal into the speaker, thereby improving the accuracy of the speaker test during the semi-finished earphone test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the semi-finished headphone testing device in the embodiment of this patent specification;

[0015] Figure 2 This is a schematic diagram of the structure of the rear side of the semi-finished headphone testing device in the embodiment of this patent specification;

[0016] Figure 3 This is a schematic diagram of the structure of the FPC positioning fixture of the semi-finished headphone test device in the embodiment of this patent specification when the semi-finished headphone FPC is not placed;

[0017] Figure 4 This is a structural schematic diagram of the FPC positioning fixture of the semi-finished headphone test device in the embodiment of this patent specification when placing the semi-finished headphone FPC;

[0018] Figure 5 This is a schematic diagram of the axial cross-sectional structure of the test probe of the semi-finished headphone testing device in the embodiment of this patent specification.

[0019] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of those skilled in the art, the following will describe multiple embodiments of this patent in combination with text and drawings. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit this patent. In other words, in some embodiments of this patent, these practical details are not necessary. In addition, for ease of understanding, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0021] In the description of this patent, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this patent, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] In this patent, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to the specific circumstances.

[0024] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this patent.

[0025] See also Figures 1 to 5 , a semi-finished headphone testing device is used for testing the sound of a speaker during the production and assembly of a headphone. The semi-finished headphone testing device comprises a mounting frame 1, an FPC positioning fixture 2, a test pressing mechanism 3 and a sound detection mechanism 4. The mounting frame 1 is the overall mounting structure of the semi-finished headphone testing device. The FPC positioning fixture 2 and the test pressing mechanism 3 are both mounted on the mounting frame 1. The sound detection mechanism 4 can be mounted on the mounting frame 1 or independently set outside the mounting frame 1. When the semi-finished earphone testing device is working, the FPC of the semi-finished earphone speaker and microphone is fixed by the FPC positioning fixture 2, the semi-finished earphone FPC is pressed down by the test pressing mechanism 3 to connect the electrical signal to the speaker of the semi-finished earphone, and the sound detection mechanism 4 is used to detect whether the sound of the semi-finished earphone speaker is normal. Therefore, during the production and assembly of the earphone, before the FPC of the speaker and microphone is inserted into the plug terminal of the circuit board, the speaker of the earphone is tested for sound. After ensuring that the speaker sounds normally, the FPC of the speaker and microphone is inserted into the plug terminal of the circuit board to complete the assembly of the earphone, thereby ensuring the yield rate of the speaker installed in the earphone, thereby improving the yield rate of the production and assembly of the earphone.

[0026] See also Figure 3 and Figure 4 The FPC positioning fixture 2 includes a positioning column 21, a fixed pressure rod 22 and a support platform 23. The support platform 23 is arranged on the mounting frame 1, and the semi-finished earphone FPC 5 to be tested is supported by the support platform 23. The positioning column 21 and the fixed pressure rod 22 are both arranged on the support platform 23. The positioning column 21 is adapted to the positioning hole on the semi-finished earphone FPC, that is, the size, shape, position and number of the positioning column 21 are consistent with the size, shape, position and number of the positioning hole on the semi-finished earphone FPC, so that the positioning column 21 on the support platform 23 is just inserted into the positioning hole on the semi-finished earphone FPC to position the semi-finished earphone FPC, and then the semi-finished earphone FPC is pressed and fixed on the support platform 23 by the fixed pressure rod 22, thereby ensuring the stable fixation of the semi-finished earphone FPC during the test, and the test pressing mechanism 3 can accurately abut against the metal exposed interface of the speaker and microphone FPC to pass the electrical signal into the speaker, thereby improving the accuracy of the speaker test during the semi-finished earphone test.

[0027] See also Figure 3 and Figure 4When the fixed pressure rod 22 presses the semi-finished earphone FPC on the supporting platform 23, it can be pressed by its own gravity, spring elastic force, etc. In this embodiment, a method of pressing by magnetic action is proposed, which is as follows. The FPC positioning fixture 2 includes a magnetic fixing block 24, and the magnetic fixing block 24 is arranged on the supporting platform 23, and the magnetic fixing block 24 adopts a magnet. The fixed pressure rod 22 is a metal rod or a ferrite rod that can be adsorbed by the magnetic fixing block 24. In this embodiment, the magnetic fixing block 24 adopts an iron rod-shaped structure. With the above-mentioned magnetic fixing block 24 and fixed pressure rod 22, the fixed pressure rod 22 can be magnetically attracted to the magnetic fixing block 24, and the semi-finished earphone FPC5 is pressed on the supporting platform 23, and the fixed pressure rod 22 is pressed by magnetic attraction to fix the semi-finished earphone FPC5, which is easy to operate and stable.

[0028] See also Figure 3 and Figure 4 In order to improve the convenience of the fixed pressure rod 22 in pressing the semi-finished earphone FPC, the FPC positioning fixture 2 is also provided with a swing rod 25 and a swing driving rod 26. The swing rod 25 is set on the support platform 23 through a swing axis, and the swing driving rod 26 is set on the swing rod 25. The fixed pressure rod 22 is set on the swing rod 25. When it is necessary to press or release the semi-finished earphone FPC5, the swing driving rod 26 is manually operated to drive the swing rod 25 to swing on the support platform 23, and the fixed pressure rod 22 swings with the swing rod 25 to press or release the semi-finished earphone FPC5. This improves the convenience of the fixed pressure rod 22 in pressing the semi-finished earphone FPC, and can improve the testing efficiency of the semi-finished earphone testing device. It is best to provide two groups of the positioning posts 21 and the magnetic fixing blocks 24. The two groups of positioning posts 21 and the two groups of magnetic fixing blocks 24 are arranged at the four corners of the quadrilateral, and the two groups of positioning posts 21 are arranged between the two groups of magnetic fixing blocks 24, so that the semi-finished headphone FPC can be fixed on the supporting platform 23 from four positions, and the fixation is more stable and reliable, which can further improve the accuracy of the speaker test when testing the semi-finished headphone.

[0029] See also Figure 1 and 5 The test pressing mechanism 3 includes a lifting drive assembly 31, a probe fixing plate 32 and a test probe 33. The lifting drive assembly 31 is arranged on the mounting frame 1, the probe fixing plate 32 is arranged at the lifting movable end of the lifting drive assembly 31, and the test probe 33 is fixed on the probe fixing plate 32. Thus, the lifting drive assembly 31 can drive the probe fixing plate 32 to lift and lower, and drive the test probe 33 to lift and lower synchronously to abut against the semi-finished earphone FPC 5. The lifting drive assembly 31 can adopt a telescopic cylinder, and the probe fixing plate 32 can adopt a plate-like structure made of materials such as bakelite.

[0030] See also Figure 1and 5 The probe fixing plate 32 includes an upper clamping plate 321 and a lower clamping plate 322, one of which is fixed to the lifting and lowering movable end of the lifting and lowering driving assembly 31, and the upper clamping plate 321 and the lower clamping plate 322 are fixed together. The cross-section of the middle part of the test probe 33 is larger than the cross-sections on both sides, and the part with a larger cross-section in the middle part of the test probe 33 is clamped and fixed between the upper clamping plate 321 and the lower clamping plate 322, so that the test probe 33 is fixed by the upper clamping plate 321 and the lower clamping plate 322. It is best to provide through holes with step structures on the opposite sides of the upper clamping plate 321 and the lower clamping plate 322, and the two ends of the middle part with a larger cross-section of the test probe 33 abut on the steps of the through holes on the upper clamping plate 321 and the lower clamping plate 322, and the parts with smaller cross-sections on both sides of the test probe 33 pass through the through holes of the upper clamping plate 321 and the lower clamping plate 322. One end of the test probe 33 is used to abut against the semi-finished earphone FPC5, and the other end of the test probe 33 is electrically connected to the external circuit, thereby achieving the test probe 33 Stably fixed on the probe fixing plate 32, and both ends of the test probe 33 pass through the probe fixing plate 32 for easy connection with the external structure.

[0031] See also Figure 5 The test probe 33 adopts the following structure, including a syringe part 331, a needle body part 332 and a spring 333. The needle body part 332 is elastically arranged in the barrel of the syringe part 331 through the spring 333, and the needle body part 332 passes through the barrel of the syringe part 331. The syringe part 331, the needle body part 332 and the spring 333 are all made of conductive metal materials, so that when the semi-finished earphone test device is working, the test probe 33 can transmit the electrical signal of the external circuit to the semi-finished earphone FPC5 to drive the speaker of the semi-finished earphone to make a sound. The spring 333 is arranged so that when the test probe 33 abuts against the semi-finished earphone FPC5, the two are elastically abutted, so as to avoid the test probe from abutting against the semi-finished earphone FPC5 and damaging it.

[0032] See also Figure 5The needle body 332 includes a mounting portion and an electrical contact portion. The outer diameter of the mounting portion is larger than the outer diameter of the electrical contact portion, and is consistent with the inner diameter of the barrel of the syringe 331, so that the mounting portion can be inserted into the barrel of the syringe 331. The needle body 332 passes through the barrel of the syringe 331, which is convenient for contacting with the semi-finished earphone FPC5. The middle part of the barrel of the syringe 331 shrinks inward to form a shrinkage portion 3311. After the needle body 332 is installed in the syringe 331, the needle body 332 is limited on the syringe 331 by the shrinkage portion 3311 to prevent the needle body 332 from slipping off the syringe 331. The syringe 331 is a metal structure, so the middle part of the barrel of the syringe 331 shrinks inward to form a shrinkage portion 3311 by squeezing inward from the periphery. A positioning column can also be set in the cavity of the syringe part 331, and a positioning groove can also be set in the needle body part 332, so that the spring 333 is sleeved on the positioning column in the syringe part 331 and inserted into the positioning groove of the needle body part 332. This makes the installation of the needle body part 332 and the syringe part 331 more stable and the conductivity between the needle body part 332 and the syringe part 331 is better.

[0033] See also Figure 1 and Figure 2 The mounting frame 1 adopts the following structure, including a fixing seat 11 and a gantry 12, wherein the gantry 12 is arranged on the fixing seat 11, the FPC positioning fixture 2 is arranged on the fixing seat 11, and the test pressing mechanism 3 is arranged on the gantry 12. The sound detection mechanism 4 can be arranged on the fixing seat 11 or outside the fixing seat 11. In this embodiment, the sound detection mechanism 4 is arranged outside the fixing seat 11.

[0034] See also Figure 1 and Figure 2 The sound detection mechanism 4 includes an artificial ear 41 and a sound transmission tube 42. One end of the sound transmission tube 42 is connected to the artificial ear 41, and the other end of the sound transmission tube 42 is used to connect the semi-finished earphone to be tested. Both the artificial ear 41 and the sound transmission tube 42 can adopt relevant components in the prior art. When the semi-finished earphone testing device is working, the sound of the speaker of the semi-finished earphone enters the artificial ear 41 through the sound transmission tube 42, so as to detect whether the sound of the speaker of the semi-finished earphone is normal through the artificial ear 41.

[0035] See also Figures 1 to 5When the semi-finished earphone test device is working, the FPC5 of the semi-finished earphone is positioned and fixed by the FPC positioning fixture 2, and the test probe 33 of the test pressing mechanism 3 is pressed down to abut the FPC gold finger of the semi-finished earphone to connect the electrical signal to the speaker and FB MIC of the semi-finished earphone, and after being processed by the sound detection mechanism 4, it is connected to the electroacoustic tester for analysis and processing, so as to detect whether the sound of the speaker is normal; at the same time, the test probe 33 abutting the FB MIC gold finger connects the electrical signal of the FB MIC to the analog signal conversion device for analog signal conversion, and after conversion, it is input into the electroacoustic tester to detect and analyze whether the FBMIC is normal. When the speaker and FB MIC are normal, the FPC is inserted into the wiring terminal of the circuit board to complete the production and assembly of the earphone; when the speaker and FB MIC are abnormal, replace the new speaker and FB MIC components and retest until the speaker and FB MIC components are tested normally, then the FPC is inserted into the wiring terminal of the circuit board to complete the production and assembly of the earphone.

[0036] Obviously, the above embodiments of this patent are only examples for clearly explaining this patent, and are not intended to limit the implementation methods of this patent. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this patent should be included in the scope of protection of the claims of this patent.

Claims

1. A semi-finished headphone testing device, characterized in that: The invention comprises a mounting frame (1), an FPC positioning fixture (2), a test pressing mechanism (3) and a sound detection mechanism (4); the FPC positioning fixture (2) and the test pressing mechanism (3) are both arranged on the mounting frame (1), and the sound detection mechanism (4) is arranged on the mounting frame (1) or outside the mounting frame (1); the FPC positioning fixture (2) comprises a positioning column (21), a fixed pressure rod (22) and a support platform (23); the support platform (23) is arranged on the mounting frame (1), the positioning column (21) and the fixed pressure rod (22) are both arranged on the support platform (23); the positioning column (21) is matched with a positioning hole on a semi-finished earphone FPC; the positioning column (21) positions the semi-finished earphone FPC on the support platform (23); and the fixed pressure rod (22) can press the semi-finished earphone FPC on the support platform (23).

2. The semi-finished earphone testing device according to claim 1, characterized in that: The FPC positioning fixture (2) further comprises a magnetic fixing block (24), wherein the magnetic fixing block (24) is arranged on the supporting platform (23); the fixed pressure rod (22) is a metal rod or a ferrite rod that can be adsorbed by the magnetic fixing block (24), and the fixed pressure rod (22) can be magnetically attracted to the magnetic fixing block (24).

3. The semi-finished earphone testing device according to claim 2, characterized in that: The FPC positioning fixture (2) further comprises a swing rod (25) and a swing driving rod (26); the swing rod (25) is swingably arranged on the support platform (23); the swing driving rod (26) is arranged on the swing rod (25); the fixed pressure rod (22) is arranged on the swing rod (25); and the fixed pressure rod (22) presses or releases the semi-finished earphone FPC as the swing rod (25) swings.

4. The semi-finished earphone testing device according to claim 3, characterized in that: The positioning posts (21) and the magnetic fixing blocks (24) are each provided in two groups, and the two groups of positioning posts (21) are each provided at a position between the two groups of magnetic fixing blocks (24).

5. The semi-finished earphone testing device according to any one of claims 1 to 4, characterized in that: The test pressing mechanism (3) comprises a lifting drive assembly (31), a probe fixing plate (32) and a test probe (33); the lifting drive assembly (31) is arranged on a mounting frame (1); the probe fixing plate (32) is arranged at a lifting movable end of the lifting drive assembly (31); and the test probe (33) is fixed on the probe fixing plate (32).

6. The semi-finished earphone testing device according to claim 5, characterized in that: The probe fixing plate (32) comprises an upper clamping plate (321) and a lower clamping plate (322), one of the upper clamping plate (321) and the lower clamping plate (322) is fixed to the lifting movable end of the lifting drive assembly (31), the upper clamping plate (321) and the lower clamping plate (322) are fixed together, the cross section of the middle part of the test probe (33) is larger than the cross section of the two sides, and the middle part of the test probe (33) is clamped and fixed between the upper clamping plate (321) and the lower clamping plate (322).

7. The semi-finished earphone testing device according to claim 6, characterized in that: The test probe (33) comprises a syringe portion (331), a needle body portion (332) and a spring (333); the needle body portion (332) is elastically arranged in the barrel of the syringe portion (331) by means of the spring (333), and the needle body portion (332) passes through the barrel of the syringe portion (331).

8. The semi-finished earphone testing device according to claim 7, characterized in that: The needle body portion (332) includes a mounting portion and an electrical contact portion, the outer diameter of the mounting portion is larger than the outer diameter of the electrical contact portion, the mounting portion is inserted into the barrel of the syringe portion (331), the needle body portion (332) passes through the barrel of the syringe portion (331), and the middle portion of the barrel of the syringe portion (331) contracts inward to form a contraction portion (3311), and the contraction portion (3311) limits the needle body portion (332) on the syringe portion (331).

9. The semi-finished earphone testing device according to claim 1, characterized in that: The mounting frame (1) comprises a fixing seat (11) and a gantry (12); the gantry (12) is arranged on the fixing seat (11); the FPC positioning fixture (2) is arranged on the fixing seat (11); and the test pressing mechanism (3) is arranged on the gantry (12).

10. The semi-finished earphone testing device according to claim 1, characterized in that: The sound detection mechanism (4) comprises an artificial ear (41) and a sound transmission tube (42), one end of the sound transmission tube (42) is connected to the artificial ear (41), and the other end of the sound transmission tube (42) is connected to a semi-finished earphone to be tested.

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