Neck-hanging type Bluetooth earphone based on fast charging technology

Abstract

The utility model discloses a neck-hanging type Bluetooth earphone based on fast charging technology, which relates to the field of Bluetooth earphones and comprises an earphone body, a control box and a charging port, and a protection plate is slidably mounted at the bottom of the control box and is positioned on the outer side of the charging port. By arranging the protection plate, the waterproof groove, the waterproof groove outer wall with the oblique angle design, the positioning mechanism and other parts, all-directional protection of the charging port is achieved, the protection plate effectively prevents sweat and sundries from entering the charging port, meanwhile, the waterproof groove and the special design of the waterproof groove can also prevent sweat from entering the charging port, and the charging port is protected. And the positioning mechanism ensures that the protection plate is tightly closed in a non-charging state, so that the problems of short circuit, corrosion and the like caused by foreign matter invasion can be remarkably reduced, the integrity of an internal circuit of the earphone is ensured, the earphone is ensured to always keep good sound quality and stable call quality, the service life of the earphone is greatly prolonged, and the maintenance cost is reduced. And the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bluetooth earphone, concretely is a kind of based on fast charging technology's neck-hung bluetooth earphone. BACKGROUND

[0002] With the popularity of mobile internet and the vigorous development of intelligent terminal equipment, as a kind of convenient audio output device, bluetooth earphone occupies an important position in modern life, bluetooth earphone provides more free, flexible audio experience for users by its wireless connection convenience, meanwhile, many bluetooth earphones currently adopt fast charging technology, which greatly changes people's charging habits, significantly shortens charging time and improves the use efficiency of bluetooth earphone.

[0003] The existing bluetooth earphone charging technology covers multiple key components, the charging interface is the channel of electric energy input, its type is various, such as MicroUSB and Type-C etc., they realize different degrees of universality while ensuring reliable connection with charger, charging circuit undertakes the heavy responsibility of accurate adjustment and conversion of input electric energy, adjusts external power supply to suitable current and voltage according to battery characteristics, ensures that charging process is safe, efficient and stable, battery management system is like the intelligent guardian of earphone battery, real-time monitors key parameters such as battery capacity and temperature, effectively prevents abnormal conditions such as overcharge and overdischarge, thereby prolongs the service life of battery and maintains its performance stability, the coordinated operation of these technologies makes bluetooth earphone make certain progress in charging, bluetooth earphone with fast charging technology can inject a large amount of electric quantity into battery in a short time by advanced charging protocol, greatly shortens the time for users to wait for charging, significantly improves the convenience of use, so that users can restore the use of earphone without long waiting, brings more efficient and smooth use experience to users.

[0004] However, the current fast charging technology is mostly used in the motion scene, such as marathon, long-distance running, etc., when a large amount of sweat is excreted from human body, sweat easily penetrates into the earphone through the charging port, because the traditional charging port lacks effective protection structure, once sweat enters, it may cause short circuit, corrosion and other serious problems, damage the circuit and precision components inside the earphone, not only affect the normal functions such as sound quality performance and call quality of earphone, but also greatly shorten the service life of earphone, although some bluetooth earphones are installed with a sealing plug on the charging port, which avoids sweat from entering, but also reduces the difficulty for users to open the charging port, so it is urgent to improve the existing fast charging neck-hung bluetooth earphone. UTILITY MODEL CONTENTS

[0005] Based on this, the utility model discloses a purpose based on fast charging technology's hanging the neck formula bluetooth earphone to solve the technical problem mentioned in above -mentioned background art.

[0006] To realize above -mentioned purpose, the utility model provides the following technical scheme: a kind of hanging the neck formula bluetooth earphone based on fast charging technology, including earphone body, control box and charging port, the control box bottom is slidably installed with protective plate, and protective plate is located charging port outside, multifunctional lug is installed on the outer wall of protective plate, and multifunctional lug outer end protrudes control box, waterproof groove for the sliding of multifunctional lug is set in the control box bottom, and protective plate is not located in waterproof groove;

[0007] The control box bottom is provided with sliding groove for the sliding of protective plate, and the control box is also provided with positioning mechanism for limiting the position of protective plate.

[0008] By adopting the above technical scheme, the protective plate is slidably installed on the control box bottom charging port outside, and is matched with multifunctional lug, waterproof groove, sliding groove and positioning mechanism, effectively blocks foreign matter, waterproof and dustproof, prolongs earphone life, and is convenient to operate.

[0009] The utility model further sets up, the control box is set with the limit groove corresponding with the shape of charger plug end in, and the position of the limit groove of control box is set with charging port, and charging port outer end and the inner wall of limit groove are located on the same plane.

[0010] As preferred, ensure that the charging interface is accurately connected, improve the charging stability and efficiency, and prevent the interface from loosening and affecting the charging.

[0011] The utility model further sets up, the width of limit groove is less than the width of protective plate and greater than the width of waterproof groove, and the spacing between the inner end of limit groove and the bottom surface of control box is greater than the spacing between the inner wall of protective plate and the bottom surface of control box.

[0012] As preferred, the protective plate is closed to protect the charging port, and the opening does not affect the charging operation, optimizes the structure layout, and enhances the practicability and reliability of the earphone.

[0013] The utility model further sets up, the sliding groove is communicated with limit groove and waterproof groove, and the width of sliding groove is greater than the width of waterproof groove.

[0014] As preferred, the protective plate is slid smoothly, and the components work together to improve the convenience and comfort of the user operating the protective plate.

[0015] The utility model further sets up, the outer wall corner of waterproof groove is all designed as bevel angle, and the inner wall of waterproof groove end portion is attached to multifunctional lug.

[0016] As preferred, the waterproof performance is enhanced, the internal circuit is protected, and the stability of the earphone is improved.

[0017] The utility model further sets up, the multifunctional boss is installed with a plurality of groups on the outer wall of the protection board, and the outer end of the multifunctional boss is designed as semicircle.

[0018] As preferred, the user can operate the protection board from different positions, and the operation convenience and comfort are improved.

[0019] The utility model further sets up, the positioning mechanism includes the magnetic block, the magnetic block is installed at the end of the protection board, the outer wall of the multifunctional boss, the outer wall of the sliding groove and the outer wall of the waterproof groove, when the end of the protection board is attached to the outer wall of the sliding groove, the corresponding plurality of magnetic blocks are magnetically attracted.

[0020] As preferred, the protection board is magnetically attracted when it is closed, the accidental opening is prevented, the stability of the protection board is enhanced, and the charging port is protected.

[0021] The utility model further sets up, the positioning mechanism includes the positioning strip installed in the control box, the positioning strip is composed of semicircular rubber rods, and the end of the positioning strip is located in the sliding groove and attached to the end of the protection board.

[0022] As preferred, the positioning strip positions the protection board when it is closed, and the position of the protection board is stabilized.

[0023] The utility model further sets up, the outer wall of the protection board is provided with the resistance reduction groove corresponding to the positioning strip, the width of the resistance reduction groove is greater than the length of the positioning strip, and after the positioning strip enters the resistance reduction groove, it is not attached to the inner wall of the resistance reduction groove.

[0024] As preferred, the sliding resistance of the protection board is reduced, the operation is facilitated, and the service life of the positioning strip is prolonged.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1、 the utility model discloses a protection board, a waterproof groove, a waterproof groove outer wall with bevel design and positioning mechanism etc. parts are set up, realize all -round protection to charging port, and the protection board effectively blocks sweat and sundries into the charging port, and the waterproof groove and its special design can also prevent sweat from entering into the charging port, and the positioning mechanism ensures that the protection board is tightly closed under the non-charging state, and such design can significantly reduce the short circuit, corrosion and other problems caused by foreign matter invasion, so as to guarantee the integrity of the internal circuit of the earphone, ensure that the earphone always maintains good sound quality, stable call quality, greatly prolongs the service life of the earphone, reduces the maintenance cost, and improves the user experience.

[0027] 2, the utility model discloses through set up multi -functional boss, sliding groove, restriction groove and the part such as the drop resistance groove on the protection board, realized the perfect combination of convenient operation and accurate charging, multi -functional boss makes user easy sliding protection board, and sliding groove provides smooth sliding track for protection board, and restriction groove ensures that charger interface and charging port accurately dock, and drop resistance groove reduces the resistance when protection board slides, this makes user when opening and closing protection board simple, comfortable operation, and the connection is stable, efficient when charging, avoids the charging interruption or potential safety hazard due to interface loosening or poor contact, brings efficient, convenient, safe use feeling for user, enhances the market competitiveness of product. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0029] Figure 2 It is the three-dimensional structure schematic diagram of another view of the utility model;

[0030] Figure 3 It is the three-dimensional structure schematic diagram of the control box of the utility model after partial section;

[0031] Figure 4 It is the three-dimensional structure schematic diagram of the protection board of the utility model after opening;

[0032] Figure 5 It is the three-dimensional structure schematic diagram of the protection board of the utility model.

[0033] BRIEF DESCRIPTION OF DRAWINGS:

[0034] 1, earphone body;2, control box;3, charging port;31, restriction groove;4, protection board;41, drop resistance groove;42, magnetic block;5, sliding groove;51, waterproof groove;6, multi -functional boss;7, positioning strip. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0036] The embodiments will be described below according to the overall structure of the utility model.

[0037] Embodiment one

[0038] Please refer to Figures 1 to 5 , the embodiment provides a kind of based on hanging neck type Bluetooth earphone of quick charging technology, including earphone body 1, control box 2 and charging port 3;

[0039] Wherein, the protective plate 4 is slidably installed at the bottom of the control box 2 and located outside the charging port 3, which mainly provides a protective barrier for the charging port 3. In daily use, the protective plate 4 can effectively block the small impurities such as dust and hair from contacting the charging port 3, preventing them from entering the earphone and causing circuit short circuit or other damage. For example, when the earphone is placed on the table or in the pocket, the protective plate 4 can prevent the impurities in the surrounding environment from entering the charging port 3. At the same time, a multifunctional protrusion 6 is installed on the outer wall of the protective plate 4, which protrudes outward from the control box 2. This not only facilitates the user to slide the protective plate 4, but also increases the isolation effect of the protective plate 4 from the outside world to a certain extent. The user can easily push the protective plate 4 by touching the multifunctional protrusion 6 to open and close the charging port 3.

[0040] At the same time, the waterproof groove 51 for the sliding of the multifunctional protrusion 6 is opened at the bottom of the control box 2 in the embodiment, and the protective plate 4 is not located in the waterproof groove 51. The design of the waterproof groove 51 can guide the sweat that contacts the bottom of the control box 2 to flow away, avoiding the accumulation of sweat around the protective plate 4 and the penetration into the charging port 3. When a small amount of sweat contacts the bottom of the control box 2, the liquid flows away along the shape of the waterproof groove 51 and does not enter the charging port 3 area.

[0041] Secondly, a sliding groove 5 for the sliding of the protective plate 4 is also opened at the bottom of the control box 2, which provides an accurate track for the sliding of the protective plate 4, ensuring smooth and stable opening and closing of the protective plate 4 without deviation or jamming. At the same time, a positioning mechanism for limiting the position of the protective plate 4 is also provided in the control box 2, which ensures that the protective plate 4 can stably stay in the position of protecting the charging port 3 when it is closed, preventing it from being accidentally opened.

[0042] In the above embodiment, please refer to Figures 2 to 4 for details. The control box 2 is provided with a limiting groove 31 corresponding to the shape of the charger interface shell. The charging port 3 is located at the position where the limiting groove 31 is opened in the control box 2, and the outer end of the charging port 3 is located in the same plane as the inner wall of the limiting groove 31. When the earphone needs to be charged, the charger interface shell can be accurately inserted into the limiting groove 31, so that the charger interface and the charging port 3 are precisely connected. This design ensures the stability and reliability of the charging connection, avoiding low charging efficiency or charging interruption caused by loose or poor contact of the interface. For example, when the charger is inserted, the limiting groove 31 can guide the charger interface to be accurately inserted into the charging port 3, so that the current can be stably transmitted to the earphone battery for charging.

[0043] In the above embodiment, please refer to Figures 2 to 4, the width of the limiting groove 31 is less than the width of the protective plate 4 and greater than the width of the waterproof groove 51, which ensures that the protective plate 4 can completely cover the charging port 3 when closed, preventing foreign matter from entering the charging port 3 from the side, while the width of the limiting groove 31 also provides a suitable insertion space for the charger interface shell, ensuring the normal operation of the charging operation, and the distance between the inner end of the limiting groove 31 and the bottom surface of the control box 2 is greater than the distance between the inner wall of the protective plate 4 and the bottom surface of the control box 2, so that the protective plate 4 does not interfere with the charger interface shell when opened, ensuring the smoothness of the charging process, for example, when the protective plate 4 is closed, its width is sufficient to block any debris that may enter the charging port 3; when the protective plate 4 is opened for charging, the charger interface shell can be smoothly inserted into the limiting groove 31 without being hindered by the protective plate 4.

[0044] In the above embodiment, please refer to Figures 2 to 4 , the sliding groove 5 is connected to the limiting groove 31 and the waterproof groove 51, so that the protective plate 4 can work cooperatively with other components during sliding, when the protective plate 4 slides in the sliding groove 5, the multifunctional block 6 can move normally in the waterproof groove 51, when the multifunctional block 6 moves to the inner wall of the other end of the waterproof groove 51, the protective plate 4 can no longer slide, at this time the protective plate 4 has moved to a position that is offset from the limiting groove 31, and charging can be performed, at the same time, the width of the sliding groove 5 is greater than the width of the waterproof groove 51, providing sufficient space for the sliding of the protective plate 4, so that it can smoothly switch between different positions, ensuring the convenience of user operation, for example, when the user pushes the protective plate 4 to open the charging port 3, the protective plate 4 can smoothly slide along the sliding groove 5 to a position that is offset from the limiting groove 31, exposing the charging port 3 completely, facilitating the insertion of the charger interface.

[0045] In the above embodiment, please refer to Figures 2 to 4 , the inclined angle design of the outer wall corner of the waterproof groove 51 can effectively guide the flow of liquid, preventing the accumulation of liquid on the outer wall of the waterproof groove 51, when the earphone contacts sweat during use, the sweat flows to the outermost position of the inclined angle, which is already at the bottom of the control box 2, and the sweat cannot flow upward through the inclined surface, so that the sweat cannot penetrate into the interior of the waterproof groove 51, at the same time, the inner wall of the end of the waterproof groove 51 is in contact with the multifunctional block 6, so that the multifunctional block 6 not only facilitates the opening of the protective plate 4, but also limits the sliding range of the protective plate 4, avoiding the user's judgment of whether the protective plate 4 is pushed to the specified position.

[0046] In the above embodiment, please refer to Figures 2 to 5The multifunctional protrusions 6 are installed at equal intervals on the outer wall of the protective plate 4, and the multifunctional protrusions 6 installed at equal intervals facilitate the user to operate the sliding of the protective plate 4 from different positions. No matter whether the user pushes from the front or operates from the side with fingers, the user can easily find the appropriate force point. The outer end of the semicircular multifunctional protrusion 6 is not only beautiful, but also reduces the friction with the skin or clothes of the user, so that the user feels more comfortable during operation. For example, when the user wears earphones, the user can naturally touch the multifunctional protrusion 6 with fingers, and then easily push the protective plate 4 to open the charging port 3. The whole process is simple, convenient and comfortable.

[0047] In the above embodiment, please refer to Figure 3 and Figure 5 The positioning mechanism includes magnetic blocks 42, which are installed on the end of the protective plate 4, the outer wall of the multifunctional protrusion 6, the outer wall of the sliding groove 5 and the outer wall of the waterproof groove 51. When the protective plate 4 is closed, the end of the protective plate 4 and the magnetic blocks 42 on the outer wall of the sliding groove 5 attract each other to generate suction force, which tightly fixes the protective plate 4 in the closed position. At the same time, the magnetic blocks 42 on the outer wall of the multifunctional protrusion 6 and the outer wall of the waterproof groove 51 also attract each other, which further enhances the stability of the protective plate 4. This magnetic block 42 positioning method can effectively prevent the protective plate 4 from being opened due to accidental collision or shaking during movement or daily use, and ensure that the charging port 3 is always in a protected state. For example, during running, fitness and other movements, even if the earphone is shaken greatly, the protective plate 4 will not be easily opened, which ensures the safety of the internal circuit of the earphone.

[0048] Embodiment two

[0049] Please refer to Figure 3 and Figure 5The positioning mechanism comprises a positioning strip 7 installed in the control box 2, wherein the positioning strip 7 is composed of a semicylindrical rubber rod, the end of the positioning strip 7 is located in the sliding groove 5 and is attached to the end of the protective plate 4, when the protective plate 4 is closed, the end of the positioning strip 7 is in close contact with the end of the protective plate 4, thereby playing a blocking and positioning role on the protective plate 4 and preventing the protective plate 4 from sliding accidentally, when the protective plate 4 needs to be opened, the sliding of the protective plate 4 will extrude the positioning strip 7 to cause deformation of the positioning strip 7, the rubber material of the positioning strip 7 can buffer the impact force when the protective plate 4 slides to a certain extent, the outer wall of the protective plate 4 is provided with a resistance-reducing groove 41 corresponding to the positioning strip 7, the width of the resistance-reducing groove 41 is greater than the length of the positioning strip 7, and after the positioning strip 7 enters the resistance-reducing groove 41, the positioning strip 7 is not attached to the inner wall of the resistance-reducing groove 41, the design of the resistance-reducing groove 41 reduces the friction between the protective plate 4 and the positioning strip 7, so that the protective plate 4 can slide more easily, when the protective plate 4 slides to the position corresponding to the resistance-reducing groove 41 and the positioning strip 7, the positioning strip 7 is reset under the elastic force of itself, thereby further stabilizing the position of the protective plate 4, for example, in the process that the user pushes the protective plate 4 to open the charging port 3, the positioning strip 7 can not only provide certain resistance to prevent the protective plate 4 from being opened accidentally, but also reduce the abrasion when the protective plate 4 slides, thereby prolonging the service life of the components.

[0050] In the specific work, the multifunctional convex block 6 arranged at the bottom of the control box 2 will contact the skin or clothes of the user, thereby preventing the part of the control box 2, in which the waterproof groove 51 is arranged, from directly contacting the skin of the user, so that the accident that a large amount of sweat enters the charging port 3 is avoided;

[0051] When the user sweats too much during exercise, the sweat from the head drops to the bottom of the control box 2 and slides downward along the control box 2, because the edges of the control box 2 are designed in an arc shape and because the bottom of the control box 2 is provided with the waterproof groove 51, the sweat can only drop or flow to the outermost edge of the waterproof groove 51 and then drop downward, so that the accident that the sweat actually enters the inner wall of the waterproof groove 51 and flows onto the protective plate 4 is effectively avoided;

[0052] Because the protective plate 4 is located in the sliding groove 5 and because the sliding groove 5 is arranged in the control box 2, the protective plate 4 is embedded in the control box 2 and is not directly protruding or located in the same plane as the bottom of the control box 2, so that the probability of the sweat contacting the protective plate 4 is effectively reduced, thereby avoiding the influence of the sweat on the charging port 3 and effectively ensuring that the influence of the sweat on the neck-hung Bluetooth earphone based on the fast charging technology is avoided during exercise;

[0053] In addition, during exercise, the plurality of corresponding magnetic blocks 42 can be magnetically attracted to each other, so that the fixity of the position of the protective plate 4 is effectively improved, the phenomenon that the protective plate 4 is opened accidentally is avoided, the positioning strip 7 also shields the end of the protective plate 4, the protective plate 4 is further limited, and the fixity of the position of the protective plate 4 is further ensured.

[0054] When charging is needed, the user pushes the multifunctional bump 6, which makes the protective plate 4 start to slide, so that the outer wall of the multifunctional bump 6 and the outer wall of the waterproof groove 51 are separated, and one end of the protective plate 4 is separated from one end of the sliding groove 5, and at the same time the other end of the protective plate 4 extrudes the positioning strip 7, forcing it to deform, until the protective plate 4 slides to the position corresponding to the positioning strip 7, at which time the positioning strip 7 resets under its own material characteristics, reducing the wear of the positioning strip 7 when the protective plate 4 slides, and reducing the influence of the positioning strip 7 on the sliding protective plate 4, so that when charging is needed, only the multifunctional bump 6 needs to be pushed to make the protective plate 4 slide to a position that is offset from the limiting groove 31, so that the charging port 3 is exposed, at which time the user pushes the charger interface shell into the limiting groove 31 until the tongue of the charger interface is fully connected with the charging port 3, at which time the end of the charger interface shell is attached to the inner end face of the limiting groove 31, so that the inner wall of the limiting groove 31 is attached to the charger interface shell, limiting it, effectively reducing the influence of the charger interface shell from shaking and other accidents during charging, and improving the safety of charging.

[0055] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and the person skilled in the art of the Bluetooth earphone can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A hanging neck type Bluetooth earphone based on fast charging technology, comprising an earphone body (1), a control box (2) and a charging port (3), characterized in that: The control box (2) is slidably mounted with a protective plate (4) at the bottom, and the protective plate (4) is located outside the charging port (3), the outer wall of the protective plate (4) is mounted with a multifunctional protrusion (6), and the outer end of the multifunctional protrusion (6) protrudes from the control box (2), the bottom of the control box (2) is provided with a waterproof groove (51) for sliding of the multifunctional protrusion (6), and the protective plate (4) is not located in the waterproof groove (51). The control box (2) is slidably mounted with a protective plate (4) at the bottom, and the protective plate (4) is located outside the charging port (3), the outer wall of the protective plate (4) is mounted with a multifunctional protrusion (6), and the outer end of the multifunctional protrusion (6) protrudes from the control box (2), the bottom of the control box (2) is provided with a waterproof groove (51) for sliding of the multifunctional protrusion (6), and the protective plate (4) is not located in the waterproof groove (51).

2. The neck-strap Bluetooth earphone based on fast charging technology according to claim 1, characterized in that: The control box (2) is provided with a limiting groove (31) corresponding to the shape of the charger interface shell, and the position of the control box (2) provided with the limiting groove (31) is provided with a charging port (3), and the outer end of the charging port (3) is located in the same plane with the inner wall of the limiting groove (31).

3. The neck-strap Bluetooth earphone based on fast charging technology according to claim 2, characterized in that: The width of the limiting groove (31) is less than the width of the protective plate (4) and greater than the width of the waterproof groove (51), and the distance between the inner end of the limiting groove (31) and the bottom surface of the control box (2) is greater than the distance between the inner wall of the protective plate (4) and the bottom surface of the control box (2).

4. The neck-strap Bluetooth earphone based on fast charging technology according to claim 3, characterized in that: The sliding groove (5) is communicated with the limiting groove (31) and the waterproof groove (51), and the width of the sliding groove (5) is greater than the width of the waterproof groove (51).

5. The neck-strap Bluetooth earphone based on fast charging technology according to claim 1, characterized in that: The outer wall corners of the waterproof groove (51) are designed as bevel angles, and the inner wall of the end of the waterproof groove (51) is attached to the multifunctional protrusion (6).

6. The neck-strap Bluetooth earphone based on fast charging technology according to claim 1, characterized in that: The multifunctional protrusion (6) is installed with multiple groups at equal intervals on the outer wall of the protective plate (4), and the outer end of the multifunctional protrusion (6) is designed as a semicircle.

7. The neck-strap Bluetooth earphone based on fast charging technology according to claim 1, characterized in that: The positioning mechanism includes a magnetic block (42), which is installed on the end of the protective plate (4), the outer wall of the multifunctional protrusion (6), the outer wall of the sliding groove (5) and the outer wall of the waterproof groove (51), and when the end of the protective plate (4) is attached to the outer wall of the sliding groove (5), the corresponding multiple groups of the magnetic block (42) will be magnetically attracted.

8. The neck-strap Bluetooth earphone based on fast charging technology according to claim 1, characterized in that: The positioning mechanism includes a positioning strip (7) installed in the control box (2), which is composed of a semicircular rubber rod, and the end of the positioning strip (7) is located in the sliding groove (5) and attached to the end of the protective plate (4).

9. The neck-strap Bluetooth earphone based on fast charging technology according to claim 8, characterized in that: The outer wall of the protective plate (4) is provided with a resistance reduction groove (41) corresponding to the positioning strip (7), the width of the resistance reduction groove (41) is greater than the length of the positioning strip (7), and after the positioning strip (7) enters the resistance reduction groove (41), it is not attached to the inner wall of the resistance reduction groove (41).

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