A magnetic force detection device and method for headphones

Abstract

This invention relates to the field of headphone testing technology, and more particularly to a headphone magnetic force testing device and method. The device includes a testing platform, a fixing plate fixedly connected to one side of the top of the testing platform, symmetrically distributed slide rails fixedly connected to the surface of the fixing plate, and an electrically operated telescopic rod adapted to the slide rails fixedly connected to the top of the testing platform. This invention has the advantages of quickly fixing the headphone and adjusting the testing angle. The headphone can be positioned and fixed using a clamping mechanism to prevent it from falling off during testing. Subsequently, a headphone magnetic force detector is used to test the magnetic force of the headphone, effectively reducing the labor intensity of workers and improving headphone testing efficiency. It solves the problem that current methods typically involve workers manually holding magnetic force detectors to test and record the magnetic force of headphones, but this manual testing method suffers from poor consistency and low accuracy of magnetic force test data.

Description

Technical Field

[0001] This invention relates to the field of headphone testing technology, specifically to a headphone magnetic force testing device and testing method. Background Technology

[0002] Headphones are a pair of transducers that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers placed close to the ears. Headphones can be detached from the media player, connected with just a plug, allowing for private listening without disturbing others; they also isolate ambient noise, which is helpful for those using them in noisy environments such as recording studios, bars, while traveling, or exercising. Originally designed for telephones and radios, headphones are now widely used with mobile phones, portable music players, radios, portable game consoles, and digital audio players due to the prevalence of portable electronic devices.

[0003] Some headphones, such as Bluetooth sports headphones, use magnetic attachments to connect the earbuds and the outer shell. The magnetic force of each headphone is usually different. For example, the magnetic force of the earbuds in the same batch of headphones may vary. The magnetic force of the left and right earbuds of the same headphone may also vary. Therefore, it is generally necessary to test the magnetic force of the headphones.

[0004] During the production process of headphones, magnetic force testing devices are typically used to test the magnetic force of the headphones. Currently, the magnetic force testing of headphones is usually done manually. Workers hold a magnetic force testing instrument to test and record the magnetic force of the headphones, and then compare and analyze the results to determine whether there are any differences in the magnetic force of the headphones. However, manual testing is prone to errors due to poor consistency of human operation and low accuracy of magnetic force test data. Therefore, we propose a headphone magnetic force testing device to solve this problem. Summary of the Invention

[0005] The purpose of this invention is to provide a magnetic detection device and method for headphones, which has the advantages of being able to quickly fix the headphones and adjust the detection angle of the headphones, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a headphone magnetic force detection device, comprising a detection platform, a fixed plate fixedly connected to one side of the top of the detection platform, slide rails symmetrically distributed fixedly connected to the surface of the fixed plate, an electric telescopic rod adapted to the slide rails fixedly connected to the top of the detection platform, a connecting block fixedly connected to the top of the electric telescopic rod, a movable block fixedly connected to one side of the connecting block, the movable block being slidably connected to the slide rails, and a horizontal plate fixedly connected to the side of the movable block away from the slide rails.

[0007] A baffle is fixedly connected to the top of the testing platform and in front of the electric telescopic rod. An adjustment mechanism is fixedly connected to the opposite side of the baffle. A controller is fixedly connected to the front of the testing platform. A mounting plate is provided on the top of the adjustment mechanism. An earphone mounting base is fixedly connected to the middle position of the top of the mounting plate. A clamping mechanism is provided through the surface of the earphone mounting base. The adjustment mechanism is used to adjust the testing position of the earphone, and the clamping mechanism positions and fixes the earphone product.

[0008] The front side of the horizontal plate is fixedly connected to a symmetrically distributed fixing frame, and the fixing frame is located above the adjustment mechanism. Several headphone magnetic force detectors are installed through the surface of the fixing frame, and the headphone magnetic force detectors are used to detect the magnetic force of the headphone.

[0009] Preferably, the adjusting mechanism includes a connecting seat fixedly connected to the baffle. An annular block is fixedly connected to one end of the connecting seat away from the baffle. A servo motor is fixedly connected to one side of the annular block, and the output shaft of the servo motor passes through the inner cavity of the annular block. Rotating blocks are rotatably connected to both sides of the inner cavity of the annular block. The output shaft of the servo motor is fixedly connected to the rotating blocks. A first transmission rod and a second transmission rod are respectively provided in the inner cavity of the annular block. The first transmission rod is rotatably connected to the rotating blocks, and the first transmission rod and the second transmission rod are fixedly connected and arranged perpendicularly.

[0010] Preferably, the annular block has two symmetrically arranged sliding grooves on its side, and a sliding block is slidably connected inside the sliding groove. The two ends of the second transmission rod pass through the sliding block and are rotatably connected to the sliding block. A guide groove is provided on the inner wall of the sliding groove, and guide blocks are fixedly connected to both sides of the sliding block. The guide blocks are located inside the guide groove and are slidably connected to the inner wall of the guide groove.

[0011] Preferably, bearing seats are embedded on both sides of the annular block, and one end of the rotating block penetrates into the interior of the bearing seat and is rotatably connected to the inner wall of the bearing seat.

[0012] Preferably, the clamping mechanism includes a housing, a clamping block, a limiting plate, and a compression spring. The housing is fixedly connected to the earphone mounting base, and the housing has an internal cavity. One end of the clamping block is located in the inner cavity of the housing. The limiting plate is fixedly connected to one end of the clamping block and slidably connected to the inner wall of the housing. The compression spring is located in the inner cavity of the housing, and both ends of the compression spring are fixedly connected to the housing and the limiting plate, respectively.

[0013] Preferably, the end of the clamping block away from the limiting plate extends into the inner cavity of the earphone mounting base, the clamping block is a wedge-shaped clamping block, and the port of the clamping block is set to an arc shape.

[0014] Preferably, the upper and lower ends of the slide rail are fixedly connected to limit blocks, the cross-section of the slide rail is I-shaped, and the movable block is nested on the outside of the slide rail.

[0015] Preferably, the position of the earphone magnetic force detector corresponds to the position of the earphone mounting base, the earphone magnetic force detector is detachably connected to the fixing frame by bolts, and the detection end of the earphone magnetic force detector is located at the bottom of the fixing frame.

[0016] A magnetic force detection device and method for headphones, the method comprising the following steps:

[0017] Step 1: First, fix the earphone to be tested. Place the earphone inside the earphone mounting base and slowly press the earphone down. At this time, the earphone contacts the inclined surface at the top of the clamping block, pushing the clamping blocks on both sides to move into the inner cavity of the shell. This causes the compression spring to shorten under force until the earphone moves to the bottom of the clamping block. At this time, the elasticity of the compression spring pushes the clamping block back to its initial position. Repeat this process to complete the positioning operation of multiple earphones.

[0018] Step 2: After the headphones are fixed, control the telescopic end of the electric telescopic rod to move, causing the connecting block to move downward. At this time, the connecting block drives the movable block to move. Meanwhile, the movement trajectory of the movable block is limited by the slide rail to prevent the movement trajectory of the horizontal plate from deviating while the movable block drives the horizontal plate to descend. Then, the fixing frame and the headphone magnetic detector move synchronously with the horizontal plate until the detection end of the headphone magnetic detector approaches the headphone to be tested inside the headphone mounting base. Then, the headphone magnetic detector is activated to detect the magnetic force of the headphone.

[0019] Step 3: When performing a full-range test on the headphones, start the servo motor. The output shaft of the servo motor will drive the rotating block to rotate. Since the rotating blocks on both sides are symmetrically arranged, the rotating block will drive the first transmission rod to swing. While the first transmission rod swings, it will drive the second transmission rod to move and make the sliding block slide along the inner wall of the sliding groove. At the same time, the guide block slides inside the guide groove to prevent the sliding block from separating from the ring block. At this time, the mounting plate will rotate around the first and second transmission rods and drive the headphone mounting base to move synchronously, so that the headphone magnetic force detector can perform multi-directional detection of the headphone magnetic force.

[0020] Step 4: The headphone magnetic detector detects and collects the headphone's magnetic data, and then transmits the data to the controller. After the headphone magnetic detection is completed, the servo motor and the headphone magnetic detector stop working. Then, the piston rod of the electric telescopic rod is extended, causing the headphone magnetic detector to rise away from the headphone mounting base. Finally, the clamping block is pushed to move to both sides to remove the headphone.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The headphone magnetic force detection device proposed in this invention has the advantages of quickly fixing the headphone and adjusting the detection angle of the headphone. It can fix the headphone through a clamping mechanism to prevent the headphone from falling off during the detection process. Then, the magnetic force of the headphone is detected by the headphone magnetic force detector. This effectively reduces the labor intensity of the staff and improves the headphone detection efficiency. It solves the problem that the current method of detection is usually done manually. The staff holds the magnetic force detector to detect the magnetic force of the headphone and records the data. The results are then compared and analyzed to determine whether there are differences in the magnetic force of the headphone. However, the manual detection method has the problem of poor consistency of human operation and low accuracy of magnetic force detection data. Therefore, it has good application prospects.

[0023] 2. This invention, by setting an adjustment mechanism, causes the mounting plate and the earphone mounting base to rotate in a circular motion, thereby causing the earphone to be tested to move synchronously. This allows the earphone magnetic force detector to detect the magnetic force of the earphone from multiple angles, avoiding the misjudgment caused by single-point detection. Furthermore, the controller automatically compares and analyzes the earphone detection data to determine the differences in magnetic force between earphones, avoiding errors caused by human intervention and thus greatly improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of a partial structure of the present invention;

[0026] Figure 3 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the adjusting mechanism structure of the present invention. Figure 1 ;

[0028] Figure 5 For the present invention Figure 4 A magnified view of a section at point B in the middle;

[0029] Figure 6 This is a schematic diagram of the adjusting mechanism structure of the present invention. Figure 2 ;

[0030] Figure 7 This is a top view of the clamping mechanism structure of the present invention.

[0031] In the diagram: 1. Testing platform; 2. Fixed plate; 3. Slide rail; 4. Electric telescopic rod; 5. Connecting block; 6. Movable block; 7. Horizontal plate; 8. Baffle; 9. Adjustment mechanism; 91. Connecting seat; 92. Ring block; 93. Servo motor; 94. Rotating block; 95. First transmission rod; 96. Second transmission rod; 10. Controller; 11. Mounting plate; 12. Earphone mounting seat; 13. Clamping mechanism; 131. Housing; 132. Clamping block; 133. Limiting plate; 134. Compression spring; 14. Sliding groove; 15. Sliding block; 16. Guide groove; 17. Guide block; 18. Bearing seat; 19. Fixed frame; 20. Earphone magnetic force detector; 21. Limiting block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-7 A magnetic force detection device for headphones includes a detection platform 1. A fixed plate 2 is fixedly connected to one side of the top of the detection platform 1. A symmetrically distributed slide rail 3 is fixedly connected to the surface of the fixed plate 2. An electric telescopic rod 4 adapted to the slide rail 3 is fixedly connected to the top of the detection platform 1. A connecting block 5 is fixedly connected to the top of the electric telescopic rod 4. A movable block 6 is fixedly connected to one side of the connecting block 5. The movable block 6 is slidably connected to the slide rail 3. Limiting blocks 21 are fixedly connected to both the upper and lower ends of the slide rail 3. The cross-section of the slide rail 3 is I-shaped, and the movable block 6 is nested on the outside of the slide rail 3. A horizontal plate 7 is fixedly connected to the side of the movable block 6 away from the slide rail 3.

[0034] A baffle 8 is fixedly connected to the top of the testing platform 1 and in front of the electric telescopic rod 4. An adjustment mechanism 9 is fixedly connected to the opposite side of the baffle 8. A controller 10 is fixedly connected to the front of the testing platform 1. The controller 10 is equipped with a central processing unit for processing the testing data. A mounting plate 11 is provided on the top of the adjustment mechanism 9. An earphone mounting base 12 is fixedly connected to the middle position of the top of the mounting plate 11. A clamping mechanism 13 is provided through the surface of the earphone mounting base 12. The adjustment mechanism 9 is used to adjust the testing position of the earphone, and the clamping mechanism 13 positions and fixes the earphone product.

[0035] A symmetrically distributed fixing frame 19 is fixedly connected to the front side of the horizontal plate 7, and the fixing frame 19 is located above the adjustment mechanism 9. Several headphone magnetic force detectors 20 are installed through the surface of the fixing frame 19. The headphone magnetic force detectors 20 are used to detect the magnetic force of the headphone. The position of the headphone magnetic force detectors 20 corresponds to the position of the headphone mounting base 12. The headphone magnetic force detectors 20 and the fixing frame 19 are detachably connected by bolts, and the detection end of the headphone magnetic force detectors 20 is located at the bottom of the fixing frame 19.

[0036] In this embodiment, the adjustment mechanism 9 includes a connecting seat 91 fixedly connected to the baffle 8. An annular block 92 is fixedly connected to one end of the connecting seat 91 away from the baffle 8. A servo motor 93 is fixedly connected to one side of the annular block 92, and the output shaft of the servo motor 93 passes through the inner cavity of the annular block 92. Rotating blocks 94 are rotatably connected to both sides of the inner cavity of the annular block 92. The output shaft of the servo motor 93 is fixedly connected to the rotating blocks 94. A first transmission rod 95 and a second transmission rod 96 are respectively provided in the inner cavity of the annular block 92. The first transmission rod 95 is rotatably connected to the rotating blocks 94, and the first transmission rod 95 and the second transmission rod 96 are fixedly connected and arranged vertically. Through the structural configuration of the adjustment mechanism 9, the servo motor 93 can be started to drive the rotating blocks 94, the first transmission rod 95 and the second transmission rod 96 to perform a series of transmissions. Then, the mounting plate 11 drives the headphone mounting seat 12 to perform a circular motion, so that the headphone magnetic force detector 20 can perform multi-directional detection of the magnetic force of the headphone to be tested.

[0037] In this embodiment, two symmetrically arranged sliding grooves 14 are provided on the side of the annular block 92. Sliding blocks 15 are slidably connected inside the sliding grooves 14. The two ends of the second transmission rod 96 pass through the sliding blocks 15 and are rotatably connected to the sliding blocks 15. A guide groove 16 is provided on the inner wall of the sliding groove 14. Guide blocks 17 are fixedly connected to both sides of the sliding block 15. The guide blocks 17 are located inside the guide groove 16 and are slidably connected to the inner wall of the guide groove 16. By setting up the sliding grooves 14, sliding blocks 15, guide grooves 16 and guide blocks 17, the sliding blocks 15 can be prevented from separating from the annular block 92, which is beneficial for the servo motor 93 to drive the first transmission rod 95 and the second transmission rod 96 to rotate, and increases the stability of the circular motion.

[0038] In this embodiment, bearing seats 18 are embedded on both sides of the annular block 92, and one end of the rotating block 94 passes through the interior of the bearing seat 18 and is rotatably connected to the inner wall of the bearing seat 18. The setting of the bearing seat 18 facilitates the output shaft of the servo motor 93 to drive the rotating block 94 for transmission.

[0039] In this embodiment, the clamping mechanism 13 includes a housing 131, a clamping block 132, a limiting plate 133, and a compression spring 134. The housing 131 is fixedly connected to the earphone mounting base 12, and the housing 131 has an internal cavity. One end of the clamping block 132 is located in the inner cavity of the housing 131. The limiting plate 133 is fixedly connected to one end of the clamping block 132 and slidably connected to the inner wall of the housing 131. The compression spring 134 is located in the inner cavity of the housing 131, and both ends of the compression spring 134 are fixedly connected to the housing 131 and the limiting plate 133, respectively. Through the arrangement of the housing 131, the clamping block 132, the limiting plate 133, and the compression spring 134, the earphone to be tested can be fixed, avoiding the earphone from falling off during the testing process and affecting the earphone magnetic detection efficiency.

[0040] In this embodiment, the end of the clamping block 132 away from the limiting plate 133 extends into the inner cavity of the earphone mounting base 12. The clamping block 132 is a wedge-shaped block, and the port of the clamping block 132 is set in an arc shape. Through the structural setting of the clamping block 132, the earphone to be tested can push the clamping block 132 to slide into the inner cavity of the outer shell 131, which is beneficial to placing the earphone to be tested into the inner cavity of the earphone mounting base 12.

[0041] A magnetic force detection device and method for headphones, the method comprising the following steps:

[0042] Step 1: First, fix the earphone to be tested. Place the earphone inside the earphone mounting base 12 and slowly press the earphone down. At this time, the earphone contacts the inclined surface at the top of the clamping block 132, pushing the clamping blocks 132 on both sides to move into the inner cavity of the outer shell 131, so that the compression spring 134 is compressed and shortened until the earphone moves to the bottom of the clamping block 132. At this time, the elastic force of the compression spring 134 pushes the clamping block 132 back to the initial position. The positioning operation of multiple earphones is completed in sequence.

[0043] Step 2: After the headphones are fixed, control the telescopic end of the electric telescopic rod 4 to move, causing the connecting block 5 to move downward. At this time, the connecting block 5 drives the movable block 6 to move. Meanwhile, the movement trajectory of the movable block 6 is restricted by the slide rail 3 to prevent the movement trajectory of the horizontal plate 7 from deviating while the movable block 6 drives the horizontal plate 7 to descend. Then, the fixing frame 19 and the headphone magnetic force detector 20 move synchronously with the horizontal plate 7 until the detection end of the headphone magnetic force detector 20 approaches the headphone to be tested inside the headphone mounting base 12. Then, the headphone magnetic force detector 20 is activated to detect the magnetic force of the headphone.

[0044] Step 3: When performing a full-range test on the headphones, start the servo motor 93. The output shaft of the servo motor 93 will drive the rotating block 94 to rotate. Since the rotating blocks 94 on both sides are symmetrically arranged, the rotating blocks 94 will drive the first transmission rod 95 to swing. While the first transmission rod 95 swings, it will drive the second transmission rod 96 to move and make the sliding block 15 slide along the inner wall of the sliding groove 14. At the same time, the guide block 17 slides inside the guide groove 16 to prevent the sliding block 15 from separating from the ring block 92. At this time, the mounting plate 11 rotates with the first transmission rod 95 and the second transmission rod 96, and drives the headphone mounting base 12 to move synchronously, so that the headphone magnetic force detector 20 can perform multi-directional detection of the headphone magnetic force.

[0045] Step 4: The headphone magnetic force detector 20 detects and collects the headphone magnetic force data, and then transmits the detected data to the controller 10. After the headphone magnetic force detection is completed, the servo motor 93 and the headphone magnetic force detector 20 are stopped. Then, the piston rod of the electric telescopic rod 4 is extended, causing the headphone magnetic force detector 20 to rise away from the headphone mounting base 12. Finally, the clamping block 132 is pushed to move to both sides to remove the headphone.

[0046] In summary, the headphone magnetic force detection device proposed in this invention has the advantages of quickly fixing the headphone and adjusting the detection angle. It uses a clamping mechanism to position and fix the headphone, preventing it from falling off during testing. Subsequently, a headphone magnetic force detector is used to test the magnetic force of the headphone. This effectively reduces the labor intensity of workers and improves headphone testing efficiency. It solves the problem that current methods typically involve manual testing, where workers hold a magnetic force detector to measure and record the magnetic force of the headphone, then compare and analyze the results to determine if there are differences in the magnetic force. However, manual testing suffers from poor consistency and low accuracy of magnetic force detection data due to human error. Therefore, this invention has promising application prospects.

[0047] This invention incorporates an adjustment mechanism that drives the mounting plate and earphone mounting base in a circular motion, thereby synchronizing the movement of the earphones under test. This allows the earphone magnetism detector to perform multi-directional detection of the earphone's magnetic force, avoiding misjudgments caused by single-point detection. Furthermore, the controller automatically compares and analyzes the earphone detection data to determine differences in magnetic force between earphones, eliminating human error and significantly improving work efficiency.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetic force detection device for earphone, comprising a detection platform (1), characterized in that: The top of the detection platform (1) is fixedly connected with a fixed plate (2), the surface of the fixed plate (2) is fixedly connected with symmetrically distributed slide rails (3), the top of the detection platform (1) is fixedly connected with an electric telescopic rod (4) matched with the slide rails (3), the top end of the electric telescopic rod (4) is fixedly connected with a connecting block (5), one side of the connecting block (5) is fixedly connected with a movable block (6), the movable block (6) is slidably connected with the slide rails (3), and the side, away from the slide rails (3), of the movable block (6) is fixedly connected with a horizontal plate (7) together. The top of the detection platform (1) and in front of the electric telescopic rod (4) is fixedly connected with a baffle (8), the opposite side of the baffle (8) is fixedly connected with an adjusting mechanism (9), the front of the detection platform (1) is fixedly connected with a controller (10), the top of the adjusting mechanism (9) is provided with a mounting plate (11), the top of the mounting plate (11) is fixedly connected with a headphone mounting seat (12) at the middle position, and the surface of the headphone mounting seat (12) is provided with a clamping mechanism (13) penetrating through, the adjusting mechanism (9) is used for adjusting the detection direction of the headphone, and the clamping mechanism (13) is used for positioning and fixing the headphone product. The front side of the horizontal plate (7) is fixedly connected with symmetrically distributed fixed frames (19), the fixed frames (19) are located above the adjusting mechanism (9), and the surface of the fixed frame (19) is provided with a plurality of headphone magnetic force detectors (20) penetrating through.

2. The earphone magnetic force detection device of claim 1, wherein: The adjusting mechanism (9) comprises a connecting seat (91) fixedly connected with the baffle (8), one end of the connecting seat (91), away from the baffle (8), is fixedly connected with an annular block (92), one side of the annular block (92) is fixedly connected with a servo motor (93), the output shaft of the servo motor (93) penetrates into the inner cavity of the annular block (92), both sides of the inner cavity of the annular block (92) are rotatably connected with rotating blocks (94), the output shaft of the servo motor (93) is fixedly connected with the rotating blocks (94), the inner cavity of the annular block (92) is respectively provided with a first transmission rod (95) and a second transmission rod (96), the first transmission rod (95) is rotatably connected with the rotating blocks (94), and the first transmission rod (95) and the second transmission rod (96) are fixedly connected and vertically arranged.

3. The earphone magnetic force detection device of claim 2, wherein: The side surface of the annular block (92) is provided with two symmetrically arranged sliding grooves (14), the sliding grooves (14) are slidably connected with sliding blocks (15), the two ends of the second transmission rod (96) penetrate through the sliding blocks (15) and are rotatably connected with the sliding blocks (15), the inner wall of the sliding groove (14) is provided with a guide groove (16), and the two sides of the sliding block (15) are fixedly connected with guide blocks (17). The guide blocks (17) are located in the guide grooves (16) and are slidably connected with the inner walls of the guide grooves (16).

4. The earphone magnetic force detection device of claim 2, wherein: Both sides of the annular block (92) are embedded with bearing seats (18), one end of the rotating block (94) penetrates into the inside of the bearing seat (18) and is rotationally connected with the inner wall of the bearing seat (18).

5. The earphone magnetic force detection device of claim 1, wherein: The clamping mechanism (13) comprises a shell (131), a clamping block (132), a limiting plate (133) and a compression spring (134), the shell (131) is fixedly connected with the earphone mounting seat (12), and the inside of the shell (131) is provided with a cavity, one end of the clamping block (132) is located in the inner cavity of the shell (131), the limiting plate (133) is fixedly connected with one end of the clamping block (132) and is slidingly connected with the inner wall of the shell (131), and the compression spring (134) is located in the inner cavity of the shell (131), and both ends of the compression spring (134) are fixedly connected with the shell (131) and the limiting plate (133) respectively.

6. The earphone magnetic force detection device of claim 5, wherein: The end of the clamping block (132) away from the limiting plate (133) extends to the inner cavity of the earphone mounting seat (12), the clamping block (132) is a wedge-shaped clamping block, and the port of the clamping block (132) is provided in a circular arc shape.

7. The earphone magnetic force detection device of claim 1, wherein: Both upper and lower ends of the sliding rail (3) are fixedly connected with limiting blocks (21), the cross section of the sliding rail (3) is in the shape of an I-beam, and the movable block (6) is nested on the outer side of the sliding rail (3).

8. The earphone magnetic force detection device of claim 1, wherein: The position of the earphone magnetic force detector (20) corresponds to the position of the earphone mounting seat (12), the earphone magnetic force detector (20) is detachably connected with the fixing frame (19) through bolts, and the detection end of the earphone magnetic force detector (20) is located at the bottom of the fixing frame (19).

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