Matching-free TWS spring pin LOGO antenna, wireless headset and antenna matching method

Abstract

The present application relates to a matching-free TWS spring pin LOGO antenna, which includes an antenna component, a matching component and a control circuit board arranged in the earphone, the antenna component includes a spring pin and an antenna body, one end of the spring pin is electrically connected to the control circuit board, the antenna body is connected to the end of the spring pin away from the control circuit board, the antenna component is arranged on the inner wall of the earphone, the antenna component is electrically connected to the control circuit board through the spring pin, the matching component is arranged inside the spring pin, the matching component is used to improve the transmission efficiency of the antenna component, a wireless communication chip is arranged on the control circuit board, and the spring pin is electrically connected to the wireless communication chip. The present application has the effect of improving the antenna performance of the TWS earphone and optimizing the use of the internal space of the TWS earphone.

Description

Technical Field

[0001] The present invention relates to the technical field of TWS earphone antennas, and in particular to a matching-free TWS spring pin LOGO antenna, a wireless earphone, and an antenna matching method. Background Art

[0002] At present, the antennas in TWS earphones (true wireless stereo earphones) usually use ceramic antennas, LDS antennas (laser formed antennas) or FPS antennas (steel sheet antennas). As the TWS earphone market becomes more and more popular, users have higher and higher requirements for TWS earphones. The performance of the antenna in the TWS earphone affects the communication capability of the TWS earphone.

[0003] However, the size of TWS earphones on the market is getting smaller and smaller, and the space inside the earphones is getting smaller and smaller. Electronic components such as antennas, circuit boards, and batteries need to be set up in a very small range, which makes the space utilization inside the earphones highly tight, reduces the available space for the antenna, and increases the difficulty of circuit design of components such as antennas and circuit boards inside the TWS earphones. In addition, the signal radiation range and signal transmission distance of the antenna become very limited, and the performance of the antenna is reduced. Therefore, there is room for improvement. Utility Model Content

[0004] In order to improve the antenna performance of TWS headphones and optimize the use of the internal space of TWS headphones, the present application provides a matching-free TWS spring pin LOGO antenna, wireless headphones and antenna matching method.

[0005] In the first aspect, the present application provides a matching-free TWS spring pin LOGO antenna, which adopts the following technical solution:

[0006] A matching-free TWS spring pin LOGO antenna, comprising an antenna assembly, a matching assembly and a control circuit board arranged in an earphone, the antenna assembly comprising a spring pin and an antenna body, one end of the spring pin is electrically connected to the control circuit board, the antenna body is connected to the end of the spring pin away from the control circuit board, the antenna assembly is arranged on the inner wall of the earphone, the antenna assembly is electrically connected to the control circuit board through the spring pin, the matching assembly is arranged inside the spring pin, the matching assembly is used to improve the transmission efficiency of the antenna assembly, a wireless communication chip is arranged on the control circuit board, and the spring pin is electrically connected to the wireless communication chip.

[0007] By adopting the above technical solution, the antenna body is arranged at the end of the spring pin away from the control circuit board, which increases the distance between the antenna body and the electronic components on the control circuit board, can reduce the related electromagnetic interference, and thus improve the performance of the antenna body, the spring pin is electrically connected to the wireless communication chip of the control circuit board, so that the antenna body can achieve the matching function, the matching component is arranged inside the spring pin, which reduces the distance between the antenna body and the matching component, and improves the radiation range and signal transmission distance of the antenna body, at the same time, the matching component is arranged in the spring pin, so that the material on the control circuit board is reduced, which can effectively reduce the volume of the control circuit board, thereby optimizing the internal space usage of the TWS headset.

[0008] Preferably, the antenna body is made of aluminum material, a groove matching the shape of the earphone brand is provided on the inner shell wall of the earphone, the antenna body is located in the groove, and the shape of the antenna body matches the shape of the groove.

[0009] By adopting the above technical solution, the antenna body is made of aluminum material, which can receive Bluetooth information and realize the Bluetooth matching function. The antenna body is set to the shape of the earphone brand, so that the antenna body can adapt to the groove opened on the inner shell wall of the earphone, so that the antenna body is attached to the inner wall of the earphone shell, thereby improving the signal transmission performance of the antenna body and facilitating matching.

[0010] Preferably, the control circuit board is a flexible PCB board.

[0011] By adopting the above technical solution, the control circuit board is set as a flexible PCB board, which can enable the control circuit board to be arranged inside the earphone shell along the earphone contour, further optimizing the use space inside the earphone.

[0012] Preferably, the outer sleeve of the spring pin is provided with an insulating colloid, and the interior of the spring pin is provided with a chip connecting piece and a grounding piece, the chip connecting piece is arranged along the longitudinal extension direction of the spring pin, one end of the chip connecting piece is electrically connected to the wireless communication chip, and the other end of the chip connecting piece is electrically connected to the antenna body, one side of the matching component is electrically connected to the chip connecting piece, and the other side of the matching component is electrically connected to the grounding piece.

[0013] By adopting the above technical solution, an insulating colloid is sheathed on the outside of the spring pin, which can effectively prevent the outside of the spring pin from generating electromagnetic radiation due to the current, thereby affecting the signal transmission performance of the antenna body. A chip connecting piece and a grounding piece are arranged inside the spring pin. The antenna body is electrically connected to the wireless communication chip of the control circuit board through the chip connecting piece to realize signal transmission of the control antenna body. The matching component is electrically connected to the chip connecting piece and the grounding piece respectively, so that the matching component can be powered on and started, thereby improving the efficiency of the antenna body.

[0014] Preferably, the matching component includes a first capacitor C1, a second capacitor C2, a third capacitor C3 and an inductor L1, and the first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 are all assembled in a spring pin, one end of the first capacitor C1 is electrically connected to the chip connecting plate, the other end of the first capacitor C1 is electrically connected to the grounding plate, one end of the second capacitor C2 is electrically connected to the chip connecting plate, the other end of the second capacitor C2 is electrically connected to the grounding plate, the third capacitor C3 is electrically connected to the inductor L1, the other end of the third capacitor C3 is electrically connected to the grounding plate, and both ends of the inductor L1 are electrically connected to the chip connecting plate.

[0015] By adopting the above technical solution, by assembling the first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 in the spring pin, the antenna body is matched with an impedance of 50 ohms, thereby maximizing the transmission efficiency of the antenna body. The first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 are arranged in the spring pin in an assembly manner, which reduces the welding technical requirements for technicians and effectively solves the problem of difficulty in debugging the matching of the antenna body. At the same time, there is no need to weld them on the control circuit board, which effectively reduces the use area of ​​the control circuit board and optimizes the internal use space of the headset.

[0016] Preferably, the first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 form an impedance matching circuit, the antenna body includes an antenna A1, the antenna A1 includes three pins, the first pin of the antenna A1 is coupled to the inductor L1, the other end of the inductor L1 is coupled to the third capacitor C3, the other end of the third capacitor C3 is grounded, the connection node between the first pin of the antenna A1 and the inductor L1 is coupled to the first capacitor C1, the other end of the first capacitor C1 is grounded, the third pin of the antenna A1 is grounded, the second pin of the antenna A1 is coupled to the second capacitor C2, and the other end of the second capacitor C2 is grounded.

[0017] By adopting the above technical solution, the first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 form an impedance matching circuit, which can adjust and match the impedance of the antenna body, thereby improving the transmission efficiency of the antenna body and improving the performance of the antenna body.

[0018] In a second aspect, the present application provides a wireless headset, which adopts the following technical solution:

[0019] A wireless headset comprises a protective shell, and a matching-free TWS spring pin LOGO antenna as described above located in the protective shell. The protective shell is a hollow structure, and an earplug part and an ear handle part are arranged in the protective shell. The antenna assembly and the matching assembly are located in the earplug part.

[0020] By adopting the above technical solution, the antenna component is set in the earplug part of the protective shell of the wireless headset, so that the wireless headset adopts an integrated structure of the spring pin and the antenna body, and the matching component of the headset is also located in the earplug part of the wireless headset, so that the antenna matching performance and communication capability of the wireless headset are improved, and the internal use space of the wireless headset is optimized, which can effectively reduce the volume of the wireless headset and improve the practicality of the wireless headset.

[0021] Preferably, the control circuit board is located in the earplug part and the ear handle part, a microphone assembly and a battery are provided in the ear handle part, and the microphone assembly and the battery are electrically connected to the control circuit board respectively, and a speaker assembly is also provided in the earplug part, and the speaker assembly is electrically connected to the control circuit board.

[0022] By adopting the above technical solution, a microphone assembly is arranged in a protective shell so that the wireless headset has a call function, the battery provides a working voltage for the wireless headset, and the battery and microphone assembly are arranged on the ear handle of the wireless headset, which is arranged at a certain distance from the antenna assembly, thereby effectively reducing the electromagnetic interference generated by the microphone assembly and the battery to the antenna assembly, and further improving the communication capability of the wireless headset.

[0023] In a third aspect, the present application provides an antenna matching method, which adopts the following technical solution:

[0024] An antenna matching method comprises the steps of:

[0025] When the antenna assembly is in a working state, obtaining the resonant frequency of the antenna assembly;

[0026] According to the resonant frequency, the matching component is set to a capacitance value corresponding to the resonant frequency.

[0027] By adopting the above technical solution, by obtaining the resonant frequency of the antenna component when it is in a working state, the capacitance value in the matching component is adjusted according to the resonant frequency of the antenna component, so that the antenna component can match the optimal impedance, thereby maximizing the signal transmission efficiency of the antenna component, thereby improving the communication capability of the antenna component and improving the performance of the antenna.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The antenna body is arranged at the end of the spring pin away from the control circuit board, which increases the distance between the antenna body and the electronic components on the control circuit board, can reduce the related electromagnetic interference, and thus improve the performance of the antenna body;

[0030] 2. The matching component is assembled inside the spring pin, which reduces the welding technical requirements for technicians, reduces the distance between the antenna body and the matching component, and increases the radiation range and signal transmission distance of the antenna body. At the same time, the matching component is set inside the spring pin, which reduces the material on the control circuit board and can effectively reduce the volume of the control circuit board, thereby optimizing the use of the internal space of the TWS headset;

[0031] 3. The outer sleeve of the spring pin is provided with an insulating colloid, which can effectively prevent the outer part of the spring pin from generating electromagnetic fields due to the current. The control circuit board is provided as a flexible PCB board, which can enable the control circuit board to be arranged inside the earphone shell along the earphone contour, further optimizing the use space inside the earphone;

[0032] 4. The antenna body is made of aluminum material, which can receive Bluetooth information and realize Bluetooth matching function. The antenna body is set to the shape of the earphone brand, so that the antenna body can adapt to the groove opened on the inner shell wall of the earphone, so that the antenna body is attached to the inner wall of the earphone shell, thereby improving the signal transmission performance of the antenna body and facilitating matching;

[0033] 5. The first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 form an impedance matching circuit. By obtaining the resonant frequency of the antenna component when it is in a working state, the capacitance value in the matching component is adjusted according to the resonant frequency of the antenna component, thereby improving the transmission efficiency of the antenna body and improving the performance of the antenna body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the antenna assembly in an embodiment of the present application.

[0035] Figure 2 is a cross-sectional view of a spring pin in an embodiment of the present application.

[0036] Figure 3 is a circuit diagram of an impedance matching circuit in an embodiment of the present application.

[0037] Figure 4 It is a schematic diagram of the structure of the wireless headset in an embodiment of the present application.

[0038] Figure 5 It is a cross-sectional view of the wireless headset in an embodiment of the present application.

[0039] Figure 6 It is a flow chart of the antenna matching method according to an embodiment of the present application.

[0040] Explanation of the accompanying drawings: 1. Antenna assembly; 11. Spring pin; 111. Chip connecting plate; 112. Ground plate; 12. Antenna body; 2. Matching assembly; 3. Control circuit board; 31. Wireless communication chip; 4. Protective shell; 41. Earplug part; 42. Ear handle part; 5. Speaker assembly; 6. Microphone assembly; 7. Battery; 8. Impedance matching circuit; 9. Insulating colloid. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-6 This application is described in further detail.

[0042] The embodiment of the present application discloses a matching-free TWS spring-pin LOGO antenna.

[0043] Example:

[0044] Reference Figure 1 and Figure 2 The matching-free TWS spring pin LOGO antenna includes an antenna component 1, a matching component 2 and a control circuit board 3. The control circuit board 3 is a flexible PCB board. The antenna component 1 includes a spring pin 11 and an antenna body 12. One end of the spring pin 11 is welded to the control circuit board 3, and the spring pin 11 is electrically connected to the control circuit board 3. The antenna body 12 is connected to an end of the spring pin 11 away from the control circuit board 3, and the antenna body 12 is electrically connected to the spring pin 11. A wireless communication chip 31 is provided on the control circuit board 3, and the spring pin 11 is electrically connected to the wireless communication chip 31. The antenna body 12 is electrically connected to the wireless communication chip 31 through the spring pin 11.

[0045] The antenna body 12 is made of aluminum material. Specifically, the antenna body 12 can be set in the shape of a headphone brand, so that the antenna body 12 can be attached to the inner shell wall of the headphone, effectively optimizing the use space inside the headphone. The antenna body 12 can be an FPC antenna or an LDS antenna, which can be applicable to different types of antennas and is not specifically limited in this embodiment.

[0046] Reference Figure 2 and Figure 3The matching component 2 is assembled in the spring pin 11. The outer sleeve of the spring pin 11 is provided with an insulating colloid 9. The inner part of the spring pin 11 is provided with a chip connection piece 111 and a grounding piece 112. The chip connection piece 111 is provided along the longitudinal extension direction of the spring pin 11. The chip connection piece 111 is located on one side of the spring pin 11. The grounding piece 112 is provided on the other side of the spring pin 11. One end of the chip connection piece 111 is electrically connected to the antenna body 12. The end of the chip connection piece 111 away from the antenna body 12 is electrically connected to the wireless communication chip 31 on the control circuit board 3. The matching component 2 is provided between the chip connection piece 111 and the grounding piece 112. One side of the matching component 2 is electrically connected to the chip connection piece 111. The other side of the matching component 2 is electrically connected to the grounding piece 112.

[0047] The matching component 2 includes a first capacitor C1, a second capacitor C2, a third capacitor C3 and an inductor L1, and the first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 constitute an impedance matching circuit 8. One end of the first capacitor C1 is electrically connected to the chip connection sheet 111, and the other end of the first capacitor C1 is electrically connected to the grounding sheet 112. The first capacitor C1 is located at the bottom of the spring needle 11, one end of the second capacitor C2 is electrically connected to the chip connection sheet 111, and the other end of the second capacitor C2 is electrically connected to the grounding sheet 112. The second capacitor C2 is located near the top of the spring needle 11, the third capacitor C3 and the inductor L1 are located between the second capacitor C2 and the first capacitor C1, the third capacitor C3 is electrically connected to the inductor L1, and the other end of the third capacitor C3 is electrically connected to the grounding sheet 112, and both ends of the inductor L1 are electrically connected to the chip connection sheet 111.

[0048] The antenna body 12 is specifically an antenna A1 with model ANT3216-C04. The antenna A1 includes three pins. The first pin of the antenna A1 is coupled to the inductor L1, and the other end of the inductor L1 is coupled to the third capacitor C3. The other end of the third capacitor C3 is grounded. The connection node between the first pin of the antenna A1 and the inductor L1 is coupled to the first capacitor C1, and the other end of the first capacitor C1 is grounded. The second pin of the antenna A1 is coupled to the second capacitor C2, and the other end of the second capacitor C2 is grounded. The third pin of the antenna A1 is grounded, and the connection node between the inductor L1 and the third capacitor C3 is coupled to the wireless communication chip 31.

[0049] The implementation principle of a matching-free TWS spring pin LOGO antenna in the embodiment of the present application is as follows: the antenna body 12 forms an electrical connection loop with the wireless communication chip 31 on the control circuit board 3 through the spring pin 11, so that the antenna body 12 can realize the communication matching transmission function, and the antenna body 12 is arranged at the end of the spring pin 11 away from the control circuit board 3, which increases the distance between the antenna body 12 and the electronic components on the control circuit board 3, and the outer sleeve of the spring pin 11 is provided with an insulator, which reduces the electromagnetic interference generated by the electronic components on the control circuit board 3 and the electromagnetic interference generated by the current when the spring pin 11 is powered on, thereby improving the performance of the antenna body 12;

[0050] The matching component 2 is arranged inside the spring pin 11, so that the material on the control circuit board 3 is reduced, which can effectively reduce the volume of the control circuit board 3, thereby optimizing the use of the internal space of the TWS headset. At the same time, the matching component 2 is arranged inside the spring pin 11, which reduces the distance between the antenna body 12 and the matching component 2, and improves the radiation range and signal transmission distance of the antenna body 12;

[0051] The first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 of the matching component 2 form an impedance matching circuit 8, which can adjust and match the impedance of the antenna body 12, thereby improving the transmission efficiency of the antenna body 12 and improving the performance of the antenna body 12.

[0052] The present application also provides a wireless headset.

[0053] Example:

[0054] Reference Figure 4 and Figure 5 The wireless headset includes a protective shell 4, which is a hollow structure. The protective shell 4 is provided with an earplug portion 41 and an ear handle portion 42. The control circuit board 3 is provided in the earplug portion 41 and the ear handle portion 42, and the control circuit board 3 extends from the earplug portion 41 to the bottom of the ear handle portion 42. The antenna body 12 and the spring pin 11 are located in the earplug portion 41, and the antenna body 12 is attached to the inner wall of the protective shell 4. A speaker assembly 5 is also provided in the earplug portion 41, and the speaker assembly 5 is electrically connected to the control circuit board 3 through wires. A microphone assembly 6 and a battery 7 are also provided in the ear handle portion 42, and the microphone assembly 6 and the battery 7 are electrically connected to the control circuit board 3, respectively.

[0055] The implementation principle of a wireless headset in the embodiment of the present application is as follows: the earplug part 41 of the wireless headset adopts an integrated structure of a spring pin 11 and an antenna body 12, and the electronic components in the matching component 2 are assembled inside the spring pin 11, so that the antenna matching performance and communication capability of the wireless headset are improved, and at the same time, the internal use space of the wireless headset is optimized, which can further reduce the volume of the wireless headset and improve the practicality of the wireless headset;

[0056] The microphone assembly 6 at the ear handle portion 42 enables the wireless headset to have a call function, and the battery 7 provides a working voltage for the wireless headset. The battery 7 and the microphone assembly 6 are arranged on the ear handle portion 42 of the wireless headset, and are arranged at a certain distance from the antenna assembly 1, thereby effectively reducing the electromagnetic interference generated by the microphone assembly 6 and the battery 7 to the antenna assembly 1, and further improving the communication capability of the wireless headset.

[0057] Reference Figure 6 The present application also provides an antenna matching method, the antenna matching method comprising the following steps:

[0058] S1: When the antenna assembly is in working state, obtaining the resonant frequency of the antenna assembly.

[0059] Specifically, the resonant frequency refers to the resonant frequency at which the antenna body 12 of the antenna assembly 1 is currently working, and the resonant frequency may be a low frequency band, a medium frequency band, or a high frequency band.

[0060] In this embodiment, the resonant frequency at which the antenna body 12 is currently operating can be obtained from the current frequency setting parameters of the wireless headset, or by detecting the current resonant frequency value of the antenna body 12 in the wireless headset.

[0061] S2: According to the resonant frequency, setting the matching component to a capacitance value corresponding to the resonant frequency.

[0062] Specifically, the capacitance value refers to the capacitance value of the first capacitor C1 , the second capacitor C2 , and the third capacitor C3 in the matching component 2 .

[0063] In this embodiment, according to the detected resonant frequency value of the antenna body 12 in the wireless headset in the current working state, the capacitance values ​​of the first capacitor C1, the second capacitor C2 and the third capacitor C3 in the matching component 2 are controlled so that the impedance matching circuit 8 can reach an impedance of 50 ohms, thereby improving the transmission efficiency of the antenna body 12 in the wireless headset.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A matching-free TWS pin LOGO antenna, characterized by: The invention comprises an antenna component (1), a matching component (2) and a control circuit board (3) arranged in an earphone, wherein the antenna component (1) comprises a spring pin (11) and an antenna body (12), one end of the spring pin (11) is electrically connected to the control circuit board (3), the antenna body (12) is connected to the end of the spring pin (11) away from the control circuit board (3), the antenna body (12) is arranged on the inner wall of the earphone, the antenna body (12) is electrically connected to the control circuit board (3) through the spring pin (11), the matching component (2) is arranged inside the spring pin (11), the matching component (2) is used to improve the transmission efficiency of the antenna component (1), and the control circuit board (3) is provided with a A wireless communication chip (31) is arranged, the spring pin (11) is electrically connected to the wireless communication chip (31), an insulating colloid (9) is sleeved on the outside of the spring pin (11), a chip connection sheet (111) and a grounding sheet (112) are arranged inside the spring pin (11), the chip connection sheet (111) is arranged along the longitudinal extension direction of the spring pin (11), one end of the chip connection sheet (111) is electrically connected to the wireless communication chip (31), the other end of the chip connection sheet (111) is electrically connected to the antenna body (12), one side of the matching component (2) is electrically connected to the chip connection sheet (111), and the other side of the matching component (2) is electrically connected to the grounding sheet (112).

2. The matching-free TWS spring pin LOGO antenna according to claim 1, characterized in that: The antenna body (12) is made of aluminum material. A groove matching the shape of the brand of the earphone is arranged on the inner shell wall of the earphone. The antenna body (12) is located in the groove. The shape of the antenna body (12) matches the shape of the groove.

3. The matching-free TWS spring pin LOGO antenna according to claim 1, characterized in that: The control circuit board (3) is a flexible PCB board.

4. The matching-free TWS spring pin LOGO antenna according to claim 1, characterized in that: The matching component (2) comprises a first capacitor C1, a second capacitor C2, a third capacitor C3 and an inductor L1. The first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 are all assembled in a spring pin (11). One end of the first capacitor C1 is electrically connected to a chip connection sheet (111), and the other end of the first capacitor C1 is electrically connected to a grounding sheet (112). One end of the second capacitor C2 is electrically connected to the chip connection sheet (111), and the other end of the second capacitor C2 is electrically connected to the grounding sheet (112). The third capacitor C3 is electrically connected to the inductor L1, and the other end of the third capacitor C3 is electrically connected to the grounding sheet (112). Both ends of the inductor L1 are electrically connected to the chip connection sheet (111).

5. The matching-free TWS spring-pin LOGO antenna according to claim 4, characterized in that: The first capacitor C1, the second capacitor C2, the third capacitor C3 and the inductor L1 form an impedance matching circuit (8), the antenna body (12) includes an antenna A1, the antenna A1 includes three pins, the first pin of the antenna A1 is coupled to the inductor L1, the other end of the inductor L1 is coupled to the third capacitor C3, the other end of the third capacitor C3 is grounded, the connection node between the first pin of the antenna A1 and the inductor L1 is coupled to the first capacitor C1, the other end of the first capacitor C1 is grounded, the third pin of the antenna A1 is grounded, the second pin of the antenna A1 is coupled to the second capacitor C2, and the other end of the second capacitor C2 is grounded.

6. A wireless headset, characterized in that: The wireless headset comprises a protective shell (4), and a matching-free TWS spring pin LOGO antenna as described in any one of claims 1 to 3 located in the protective shell (4); the protective shell (4) is a hollow structure, and an earplug part (41) and an ear handle part (42) are arranged in the protective shell (4); the antenna assembly (1) is located in the earplug part (41).

7. A wireless headset according to claim 6, characterized in that: The control circuit board (3) is located in the earplug part (41) and the ear handle part (42); a microphone assembly (6) and a battery (7) are arranged in the ear handle part (42); the microphone assembly (6) and the battery (7) are electrically connected to the control circuit board (3) respectively; a speaker assembly is also arranged in the earplug part (41); the speaker assembly is electrically connected to the control circuit board (3).

8. An antenna matching method for the matching-free TWS spring pin LOGO antenna according to any one of claims 1 to 3, characterized in that: Includes steps: When the antenna component (1) is in an operating state, obtaining the resonant frequency of the antenna component (1); According to the resonant frequency, the matching component (2) is set to a capacitance value corresponding to the resonant frequency.

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