A fully open wearable stereo headphone

Abstract

This utility model discloses a fully open wearable stereo earphone, including a charging case, an inner tray, earphone bodies, an earphone fixing assembly, and a circuit assembly. The charging case includes an upper box body with a lower box body disposed on the upper box body. The inner tray includes an upper cover, a lower cover and a bonding piece disposed below the upper cover, with the bonding piece fixed to the upper and lower cover respectively. The earphone body is disposed on the earphone fixing assembly, which includes a storage block. A first earphone chamber and a second earphone chamber communicating with the first earphone chamber are disposed on the upper surface of the storage block. The circuit assembly includes a protective shell, which is a cavity structure with an opening at the top and a hollow interior, and has a mounting groove. This fully open wearable stereo earphone adopts a healthy sound solution, combining a wide sound field and a free and comfortable listening experience without intruding into the ears with the convenience of earphones, and does not produce sound leakage.

Description

Technical Field

[0001] This utility model relates to an earphone, specifically a fully open wearable stereo earphone. Background Technology

[0002] OWS (Out-of-the-Hear) headphones are a type of fully open-ear wearable stereo headphones. Their design philosophy prioritizes user health and safety. Unlike traditional TWS headphones, OWS headphones feature an open design, allowing users to simultaneously perceive ambient sounds, making them particularly suitable for outdoor sports and enhancing safety. The biggest feature of OWS headphones is that they do not need to be inserted into the ear canal. Instead, they transmit sound wave vibration signals converted from electrical signals directly to the auditory nerve through the temporal bone via traditional air conduction media such as the outer eardrum, tympanic membrane, and tympanic cavity. OWS headphones do not occupy inner ear space, which helps reduce inner ear pressure and improves comfort.

[0003] OWS is like a miniaturized, highly integrated solution for speakers. Leveraging the advancements in chip computing power in recent years, it uses multiple sound sources and dynamic algorithmic monitoring and calculation to create synthesized sound sources. It also dynamically adjusts the phase relationship between these synthesized sound sources to suppress the diffusion of external sounds and enhance the detail of in-ear sound transmission. Simultaneously, it transfers sound quality details from frequency bands insensitive to the human ear to those in sensitive bands, reducing the threat of sound energy to hearing health while delivering superior sound quality. However, due to the open-back design of OWS headphones, it suffers from drawbacks such as sound leakage, discomfort when worn, and lower sound quality. Utility Model Content

[0004] The purpose of this invention is to provide a fully open wearable stereo headphone that adopts a healthy sound solution, combining a wide sound field and a free and comfortable listening experience without intruding into the ear with the convenience of headphones. Therefore, it does not produce sound leakage. It uses technologies such as directional sound transmission and bass enhancement algorithms to optimize sound quality, reduce the impact of sound leakage and environmental noise, and improve the user's listening experience.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully open wearable stereo earphone, comprising a charging case, an inner tray, an earphone body, an earphone fixing assembly, and a circuit assembly. The charging case includes an upper box body with a lower box body disposed on the upper box body. The inner tray includes an upper cover, a lower cover, and a bonding piece disposed below the upper cover. The bonding piece is fixed to the upper cover and the lower cover respectively. The earphone fixing assembly has the earphone body disposed on it and includes a storage block. The upper surface of the storage block has a first earphone compartment and a second earphone compartment communicating with the first earphone compartment. The first and second earphone compartments work together to accommodate one earphone body. A bonding piece can be attached to the top of the earphone body, allowing the bonding piece to cooperate with the storage block and fix the earphone body. The circuit assembly includes a protective shell, which is a hollow cavity structure with an opening at the top and a mounting groove on the protective shell. A PCBA board, charging pins, a hinge, and control buttons are arranged inside the cavity of the protective shell. The hinge and control buttons are distributed at both ends of the protective shell, and the hinge is mounted on the protective shell. The hinge is fixedly connected to the upper housing, and the control buttons are horizontally arranged in the mounting groove.

[0006] Preferably, the upper cover is disposed between the upper box body and the bonding sheet, and the upper cover is fixed to both the upper box body and the bonding sheet. Since the upper cover is sandwiched between the upper box body and the bonding sheet, the upper cover is not visible.

[0007] Preferably, a rotating bushing is fixed on the upper cover plate, and a plurality of first positioning blocks are fixed on the inner side of the upper cover plate.

[0008] Preferably, the outer circumference of the bonding piece is fixed with a plurality of first locking blocks, and the plurality of first positioning blocks are respectively engaged with the plurality of first locking blocks, so that the upper cover piece and the bonding piece can be fixed as one piece.

[0009] Preferably, there are two first earphone compartments and two second earphone compartments, and the two first earphone compartments are symmetrical to the two ends of the storage block. Each of the two first earphone compartments is provided with a pin mounting hole for the charging pin to pass through. When the earphone body is placed in the first earphone compartment, it can contact the charging pin and be charged.

[0010] Preferably, the upper surface of the storage block is provided with a button positioning hole, and the button positioning hole extends through both sides of the storage block, and the button positioning hole is used to allow the control button to pass through.

[0011] Preferably, the outer circle of the storage block is fixed with a plurality of second locking blocks, and the cavity of the protective shell is fixed with a plurality of second positioning blocks. The plurality of second positioning blocks are respectively fixed on the plurality of second locking blocks, so that the edge part of the storage block is integrated with the edge part of the protective shell, and the PCBA board, charging pins and control buttons and other structures inside the cavity of the protective shell are hidden.

[0012] Preferably, the storage block is fixed with a frame at one end near the protective shell, and multiple positioning posts are fixed on the frame.

[0013] Preferably, the charging pin and the control button are both connected to the PCBA board, the PCBA board is fixed on multiple connecting posts, the bottom of the multiple connecting posts is fixed in the cavity of the protective shell, and the top of the multiple connecting posts is respectively inserted and fixed to multiple positioning posts, so that the central part of the protective shell and the central part of the positioning posts are integrated into one.

[0014] Preferably, a charging interface is also fixed on the protective shell, and the charging interface is located below the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. Comfortable to wear: This type of fully open wearable stereo earphone has the characteristic of not going into the ear and will not directly contact the second canal of the user's inner ear. Therefore, it will not rub against the user's inner ear canal, solving the problem of damage to the user's inner ear and bacterial growth caused by long-term wear of common in-ear TWS earphones.

[0017] 2. It adopts a healthy sound solution, combining a wide sound field and a free and comfortable listening experience that does not intrude into the ears with the convenience of headphones, so there is no sound leakage, making it a healthier sound solution;

[0018] 3. It has an environmental awareness function, which allows users to perceive the surrounding ambient sounds while listening to music. This is especially important for users in outdoor use scenarios such as outdoor sports and commuting, and can improve the safety of use.

[0019] 4. The ear hook design is fully ergonomic. When worn, the ear hook fits the curve of the ear perfectly without any stiffness or abruptness, improving wearing comfort. The nickel-titanium alloy steel wire inside the ear hook can ensure the product's deformation strength, thus ensuring the product's deformation strength and durability.

[0020] 5. It employs technologies such as directional sound transmission and bass enhancement algorithms to optimize sound quality, reduce sound leakage and the impact of environmental noise, and improve the user's listening experience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0022] Figure 2 This is one of the exploded views of this utility model;

[0023] Figure 3 This is the second exploded view of this utility model;

[0024] Figure 4 This is a schematic diagram of the top cover of this utility model;

[0025] Figure 5 This is a schematic diagram of the bonding sheet of this utility model;

[0026] Figure 6 This is a schematic diagram of the headphone fixing component and circuit component of this utility model;

[0027] Figure 7 This is a schematic diagram of the headphone fixing component of this utility model;

[0028] Figure 8 This is a schematic diagram of the protective shell of this utility model;

[0029] Figure 9 This is a schematic diagram of the earphone body of this utility model stored in the charging case.

[0030] The reference numerals and names in the diagram are as follows: 1. Charging case; 11. Upper case; 12. Lower case; 121. Through hole; 2. Inner tray; 21. Upper cover; 211. Rotating shaft sleeve; 212. First positioning block; 22. Lower cover; 23. Adhesive piece; 231. First locking block; 3. Earphone body; 4. Earphone fixing assembly; 41. Storage block; 411. First earphone compartment; 412. Second earphone compartment; 413. Button positioning hole; 414. Ejector pin mounting hole; 42. Second locking block; 43. Frame; 44. Positioning post; 5. Circuit assembly; 51. Protective shell; 511. Mounting groove; 52. Second positioning block; 53. PCBA board; 54. Charging ejector pin; 55. Rotating shaft; 56. Control button; 57. Connecting post; 58. Charging interface. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0033] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0034] Please see Figure 1The present invention provides an embodiment of a fully open wearable stereo headset, comprising a charging case 1 and an inner tray 2. Both the charging case 1 and the inner tray 2 have a curved surface design to better fit the curve of the fingertips of the hand, providing a better grip. The charging case 1 has the following components: 1. Battery: providing power to the headset and the charging case itself. In this embodiment, the battery uses an LIR1254 button cell battery or an LIR1054 button cell battery. If an LIR1254 button cell battery is used, its voltage is 3.7V, 3.8V, or 3.85V, and its capacity is between 70mAh and 75mA. The diameter is 12mm, the height is 5.4mm, the internal resistance is 180mΩ, the maximum charging current is between 210mA and 225mA (3C), the maximum continuous discharge current is between 140mA and 150mA (2C), the operating temperature is between 0℃ and 45℃ during charging, and the discharge temperature is between -20℃ and 60℃. If an LIR1054 button cell battery is used, the voltage of the LIR1054 button cell battery is also 3.7V, 3.8V, or 3.85V, the capacity is between 46mAh and 52mAh, the diameter is 10mm, and the height is 5.4mm. 1. 4mm diameter, internal resistance 200mΩ, maximum charging current between 138mA and 156mA (3C), maximum continuous discharge current between 92mA and 104mA (2C), operating temperature between 0℃ and 45℃ during charging, and between -20℃ and 60℃ during discharging; 2. Power management chip: responsible for battery charging and discharging management. The power management chip uses either the Microsource LP7813 or the Ingenic IP5513. If the Microsource LP7813 chip is used, it supports headphone voltage following charging, which can effectively improve charging efficiency by about 15%. It supports input... It features a 30V high withstand voltage, an overvoltage protection value of 5.85V, a programmable charging current of up to 1A, and a boost converter output current of up to 0.6A. Furthermore, the Microsource LP7813 chip supports independent bidirectional communication between the left and right earbuds and incorporates rich protection modules such as NTC management and HALL detection. If the Injoinic IP5513 is used, it offers high charge / discharge conversion efficiency and independent bidirectional communication, as well as independent insertion / removal detection, earbud super-fast charging, one-button clearing, one-button pairing, and low battery alarm functions. 3. Indicator lights: Display the status of the charging case 1, such as battery level and charging status.

[0035] Please see Figure 2The charging case 1 includes an upper body 11, with a lower body 12 disposed on the upper body 11. The inner tray 2 includes an upper cover 21, a lower cover 22 disposed below the upper cover 21, and a bonding piece 23. The bonding piece 23 is fixed to the upper cover 21 and the lower cover 22 respectively. In actual use, the upper cover 21 is not visible because it is sandwiched between the upper body 11 and the bonding piece 23. In addition, a fully open wearable stereo headset also includes an earphone body 3, an earphone fixing component 4 located below the earphone body 3, and a circuit component 5. The earphone body 3 is an in-ear design, meaning that the earphone body 3 will not be inserted into the user's inner ear, thus avoiding inner ear discomfort after wearing and improving the user experience. Furthermore, the earphone body 3 also adopts a healthy sound solution, which has two optional options. The first option is a multi-scene noise-canceling earbud using a loop switch. The second-generation earbuds offer three noise-canceling modes: office mode, concert mode, and rest mode. They intelligently adjust sound intensity through a filter structure to reduce high-frequency and low-frequency noise interference and improve focus through volume control, making them suitable for high-noise environments. The second solution is a seamless sound amplification system using the Lidaxin Hongyin solution. Through AI noise reduction and 360° sound pickup technology, it achieves uniform sound field distribution indoors and outdoors, reducing the strain on the user's voice while improving sound clarity. This healthy sound solution combines a wide sound field and a comfortable, non-in-ear listening experience with the convenience of headphones.

[0036] Furthermore, the earphone body 3 employs technologies such as directional sound transmission and bass enhancement algorithms to optimize sound quality and reduce sound leakage and the impact of environmental noise. The earphone body 3 offers two selectable directional sound transmission algorithms. The first is phase and amplitude modulation directional sound transmission, which modulates the sound waves by adjusting their phase and amplitude. By adjusting the phase and amplitude of the ultrasonic source, sound waves in a certain direction are superimposed in phase to form a directional sound beam. This technology can achieve precise sound source localization and is suitable for applications requiring precise sound positioning, such as navigation systems and virtual reality. The second is nonlinear effect directional sound transmission, which utilizes the nonlinear propagation effect of sound waves. Using special sensors and electronic components, it achieves more precise sound localization. The nonlinear effect helps to create a narrower sound propagation area, allowing sound to be primarily transmitted to a specific area while reducing interference with the surrounding environment. The earphone body 3 utilizes... There are three options available. The first is Dynamic Range Control (DRC), which maps the dynamic range of the input audio signal to a specified dynamic range to compress or expand the audio signal, thus enhancing the bass experience. The second is the SuperBass sound effect algorithm, which enhances bass effects by using high and low frequency crossover processing. The bass portion is processed by the SuperBass module before output. Users can freely set the SuperBass parameters by downloading the program online and listen to the changes in sound effects by switching the channel selection switch. The third is the Dynamic Bass Enhancement Algorithm, which uses a variable-Q filter to dynamically adjust the amount of bass enhancement based on the level of the input signal. The filter calculates the bass enhancement amount between a "threshold" and a "minimum gain" setting. Input signals with a gain higher than the minimum gain and a gain lower than the threshold will be enhanced by a fixed maximum value.

[0037] Please see Figure 3 The circuit assembly 5 includes a protective shell 51, and a through hole 121 is provided on the upper cover plate 21. The upper cover plate 21 is located below the protective shell 51.

[0038] Please see Figure 4 A rotating bushing 211 is fixed on the upper cover plate 21, and a plurality of first positioning blocks 212 are fixed on the inner side of the upper cover plate 21.

[0039] Please see Figure 5 Multiple first locking blocks 231 are fixed on the outer circle of the bonding piece 23, and multiple first positioning blocks 212 are respectively engaged with the multiple first locking blocks 231, so that the upper cover piece 21 and the bonding piece 23 can be fixed as one piece.

[0040] Please see Figure 6The earphone fixing assembly 4 includes a storage block 41. A first earphone chamber 411 and a second earphone chamber 412 communicating with the first earphone chamber 411 are provided on the upper surface of the storage block 41. Two first earphone chambers 411 and two second earphone chambers 412 are provided, and the two first earphone chambers 411 are interconnected, forming a single unit. The two first earphone chambers 411 are symmetrically positioned at both ends of the storage block 41. A button positioning hole 413 is provided on the upper surface of the storage block 41, extending through both sides of the storage block 41. A pin mounting hole 414 is provided inside each of the two first earphone chambers 411. Multiple second locks are fixed to the outer circumference of the storage block 41. The stop block 42 and the protective shell 51 are hollow cavities with an opening at the top. The protective shell 51 has a mounting groove 511. A PCBA board 53, charging pins 54, a rotating shaft 55, and control buttons 56 are housed within the cavity of the protective shell 51. The charging pins 54 and control buttons 56 are connected to the PCBA board 53. The rotating shaft 55 and control buttons 56 are located at both ends of the protective shell 51, and the rotating shaft 55 is mounted on the protective shell 51 and fixedly connected to the upper housing 11. The PCBA board 53 is fixed to multiple connecting posts 57, all of which are vertically arranged. The bottoms of the multiple connecting posts 57 are fixed within the cavity of the protective shell 51. The top of each post 57 is inserted and fixed to multiple positioning posts 44, so that the center part of the protective shell 51 is integrated with the center part of the positioning posts 44. Multiple second positioning blocks 52 are fixed inside the cavity of the protective shell 51, and the multiple second positioning blocks 52 are respectively fixed to multiple second locking blocks 42, so that the edge part of the storage block 41 is integrated with the edge part of the protective shell 51, and the PCBA board 53, charging pin 54 and control button 56 inside the cavity of the protective shell 51 are hidden. After the charging pin 54 is installed, it will pass through the pin mounting hole 414, and the top of the charging pin 54 will be higher than the pin mounting hole 414. The control button 56 is horizontally positioned. After the control button 56 is installed in the mounting slot 511, it will pass through the button positioning hole 413. At this time, the control button 56 is level with the upper surface of the storage block 41. When the earphone needs to be charged, the earphone body 3 can contact the charging pin 54 and charge after being placed in the first earphone chamber 411. The two first earphone chambers 411 and the two second earphone chambers 412 work together to accommodate one earphone body 3. For the structure of the earphone body 3, please refer to the utility model patent CN221684512U. The bonding piece 23 can be bonded to the top of the earphone body 3, so that the bonding piece 23 cooperates with the storage block 41 and fixes the earphone body 3.

[0041] Please see Figure 7 The storage block 41 is fixed with a frame 43 at one end near the protective shell 51. Multiple positioning posts 44 are fixed on the frame 43, and the multiple positioning posts 44 are evenly distributed on the frame 43.

[0042] Please see Figure 8 A charging port 58 is also fixed on the protective shell 51. The charging port 58 is located below the pivot 55. The charging port 58 adopts a USB-C interface and is used to charge the charging box 1.

[0043] Please see Figure 9 The earphone body 3 comprises two units, symmetrically distributed on the storage block 41. Specifically, one end of each earphone body 3 is disposed within one of the two first earphone chambers 411, and the other end is disposed within one of the two second earphone chambers 412. The inner lining of the earphone body 3 is made of nickel-titanium alloy steel wire, which enhances its strength, making it less prone to deformation, ensuring the product's deformation resistance and durability, and extending its service life. This earphone body 3 is suitable for leisure and entertainment, featuring an in-ear design that avoids the pressure and hygiene issues associated with traditional in-ear headphones, allowing users to enjoy music while... Enabling to perceive ambient sounds and improve safety, the earphone's non-in-ear design prevents users from feeling pressure during exercise while still ensuring safety. It's particularly suitable for outdoor activities like running and cycling, allowing users to clearly hear surrounding sounds and preventing accidents caused by hearing noise. Furthermore, the earphone itself is lightweight and comfortable for extended wear. When driving, users can clearly hear navigation instructions and ambient sounds, ensuring driving safety. The earphone's most notable feature is its open design, allowing for... With its completely sealed ear canal, unlike traditional OWS headphones which keep the ears open, the earphone body 3 allows users to hear ambient sounds while enjoying music, improving safety. The earphone body 3 uses air conduction, a design that not only solves the sound leakage problem common in open-back headphones but also retains the stability of bone conduction headphones. The earphone body 3 also features the following internal structures not disclosed in the above solutions: a speaker (responsible for sound output); a microphone (for picking up sound and enabling calls); a battery (providing power); and a Bluetooth module (for wireless connection to devices). Furthermore, the earphone body 3 uses air conduction technology, transmitting sound waves through air vibrations without needing to penetrate the ear canal. Its speaker design emphasizes an open sound field, utilizing the natural structure of the outer ear to conduct sound and reduce pressure on the eardrum. While the open-back design may cause slight sound leakage, some products optimize the sound wave path through directional sound transmission technology to reduce leakage. Because it doesn't need to be embedded in the ear canal, it can accommodate larger acoustic units. Some products use composite diaphragms or open-cavity designs to enhance the layering and naturalness of the sound. The directional sound transmission technology can employ beamforming.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fully open wearable stereo headphone, characterized in that, include: A charging box (1) includes an upper box body (11) and a lower box body (12) is provided on the upper box body (11); The inner tray (2) includes an upper cover (21) and a lower cover (22) and a fitting piece (23) disposed below the upper cover (21), wherein the fitting piece (23) is fixed to the upper cover (21) and the lower cover (22) respectively; The headphone fixing assembly (4) is provided with a headphone body (3) and includes a storage block (41). The upper surface of the storage block (41) is provided with a first headphone chamber (411) and a second headphone chamber (412) communicating with the first headphone chamber (411). The circuit assembly (5) includes a protective shell (51), which is a cavity structure with an opening at the top and a hollow interior. The protective shell (51) is provided with a mounting groove (511). The cavity of the protective shell (51) is provided with a PCBA board (53), a charging pin (54), a rotating shaft (55), and a control button (56). The rotating shaft (55) and the control button (56) are distributed at both ends of the protective shell (51). The rotating shaft (55) is mounted on the protective shell (51) and is fixedly connected to the upper box (11). The control button (56) is horizontally arranged in the mounting groove (511).

2. The fully open wearable stereo headphones according to claim 1, characterized in that: The upper cover (21) is disposed between the upper box body (11) and the bonding piece (23), and the upper cover (21) is fixed to the upper box body (11) and the bonding piece (23) respectively.

3. The fully open wearable stereo headphones according to claim 1, characterized in that: A rotating bushing (211) is fixed on the upper cover plate (21), and a plurality of first positioning blocks (212) are fixed on the inner side of the upper cover plate (21).

4. The fully open wearable stereo headphones according to claim 3, characterized in that: The outer circle of the bonding piece (23) is fixed with a plurality of first locking blocks (231), and the plurality of first positioning blocks (212) are respectively snapped onto the plurality of first locking blocks (231).

5. The fully open wearable stereo headphones according to claim 1, characterized in that: There are two of each of the first earphone compartment (411) and the second earphone compartment (412), and the two first earphone compartments (411) are symmetrical about the two ends of the storage block (41). Each of the two first earphone compartments (411) is provided with a pin mounting hole (414).

6. The fully open wearable stereo headphones according to claim 1, characterized in that: The upper surface of the storage block (41) is provided with a button positioning hole (413), and the button positioning hole (413) extends through both sides of the storage block (41).

7. The fully open wearable stereo headphones according to claim 1, characterized in that: The outer circle of the storage block (41) is fixed with a plurality of second locking blocks (42), and the cavity of the protective shell (51) is fixed with a plurality of second positioning blocks (52), and the plurality of second positioning blocks (52) are respectively fixed on the plurality of second locking blocks (42).

8. The fully open wearable stereo headphones according to claim 1, characterized in that: The storage block (41) is fixed with a frame (43) at one end near the protective shell (51), and a plurality of positioning posts (44) are fixed on the frame (43).

9. A fully open wearable stereo headphone according to claim 8, characterized in that: The charging pin (54) and control button (56) are both connected to the PCBA board (53). The PCBA board (53) is fixed on multiple connecting posts (57). The bottom of the multiple connecting posts (57) is fixed in the cavity of the protective shell (51), and the top of the multiple connecting posts (57) is respectively inserted and fixed to multiple positioning posts (44).

10. A fully open wearable stereo headphone according to claim 1, characterized in that: A charging interface (58) is also fixed on the protective shell (51), and the charging interface (58) is located below the rotating shaft (55).

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