Bluetooth earphone

Abstract

The invention discloses a Bluetooth earphone, which relates to the technical field of earphones, and comprises an earphone body and an earplug body, the earplug body is internally provided with a sound guide tube which can be detachably connected with an in-ear part of the earphone body, and the in-ear part of the earphone body is internally provided with a movable part; a dustproof net assembly with the outer diameter consistent with the inner diameter of the sound guide pipe is arranged in the sound outlet hole of the in-ear part, and when the sound guide pipe is connected with the in-ear part, the sound guide pipe can push the movable piece to move the dustproof net assembly into the sound guide pipe. Interference of the dustproof net on sound waves can be reduced, so that high-frequency sound attenuation or distortion is avoided, and the sound quality of the earphone is improved.

Description

Technical Field

[0001] This invention relates to the field of headphone technology, and more specifically to a Bluetooth headphone. Background Technology

[0002] Currently, Bluetooth headphones on the market are divided into in-ear and semi-in-ear types. In-ear headphones insert deep into the ear canal, providing a better fit and seal, resulting in relatively better sound quality. Semi-in-ear headphones offer wider compatibility and are generally more comfortable to wear. Both in-ear and semi-in-ear headphones typically include an in-ear section and a handle. The in-ear section extends into the ear canal and contacts the skin, while the handle is located outside the ear for easy handling and removal.

[0003] To meet the needs of different users, existing Bluetooth earphones can switch between in-ear and semi-in-ear styles. Chinese utility model patent CN220511226U discloses a Bluetooth earphone including an in-ear portion and an earphone cover. The in-ear portion has a sound outlet, and the earphone cover has a sound guide tube. A first dustproof mesh is located inside the sound outlet. The sound guide tube is detachably connected to the sound outlet, and the guide tube can push the first dustproof mesh to move axially along the sound outlet. This utility model utilizes the first dustproof mesh located inside the sound outlet to prevent external impurities from entering the earphone shell during use, providing a certain degree of protection. Furthermore, when switching from semi-in-ear to in-ear use, the first dustproof mesh can move within the sound outlet, ensuring the proper installation of the sound guide tube. Although the first dustproof mesh in the headphones can move axially through the sound outlet, facilitating installation with the earbuds when used as in-ear headphones, the simultaneous presence of both the first and second dustproof meshes in the sound outlet direction increases the interference with the sound waves generated by the headphones. This results in high-frequency sound attenuation or distortion when the headphones are used as in-ear headphones, affecting the sound quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. The purpose is to provide a Bluetooth headset that uses a dustproof mesh component to not only prevent dust when the headset is used as a semi-in-ear headset, but also to move the dustproof mesh component into the sound tube to prevent dust when the headset is used as an in-ear headset, thus avoiding affecting the sound quality of the headset.

[0005] This invention is achieved through the following technical solution:

[0006] A Bluetooth headset includes a headset body and an earbud body. The earbud body has a sound guide tube that can be detachably connected to the ear inlet portion of the headset body. The ear inlet portion of the headset body has a movable component. The sound outlet of the ear inlet portion has a dustproof mesh assembly with an outer diameter that matches the inner diameter of the sound guide tube. When the sound guide tube is connected to the ear inlet portion, the sound guide tube can push the movable component to move the dustproof mesh assembly into the sound guide tube.

[0007] Furthermore, the inner wall of the earpiece is provided with a mounting groove, and the movable component includes a first airbag and a movable push rod. The first airbag is located in the mounting cavity, and the mounting groove is also provided with an annular protrusion. The annular protrusion is provided with a mounting blind hole communicating with the first airbag. One end of the movable push rod extends into the mounting blind hole, and the other end is connected to the dustproof mesh assembly.

[0008] Furthermore, the outer diameter of the annular protrusion is consistent with the inner diameter of the sound guide tube, and the outer diameter of the sound guide tube is consistent with the inner diameter of the sound outlet hole.

[0009] When the sound guide tube moves axially along the sound outlet, it can be fitted onto the annular protrusion and compress the first airbag.

[0010] Furthermore, a first elastic element is provided inside the mounting blind hole, one end of which is connected to the inner wall of the mounting blind hole, and the other end is connected to the movable push rod;

[0011] The mounting groove is also equipped with a compression plate, and the sound guide tube can push the compression plate to compress the first airbag;

[0012] The first airbag is also provided with a second elastic element, which is distributed along the axial direction of the sound outlet hole, and the elastic force of the second elastic element is greater than that of the first elastic element.

[0013] Furthermore, a locking groove is provided on the outer circumference of the sound guide tube, and the locking groove is distributed along the circumference of the sound guide tube;

[0014] The earpiece is also provided with an installation cavity, which contains a third elastic element, a movable block and a locking element. One end of the third elastic element is connected to the inner wall of the installation cavity and the other end is connected to the movable block. One end of the locking element is connected to the movable block and the other end extends into the sound outlet and is inserted into the locking groove of the sound guide tube to fix the sound guide tube in the sound outlet.

[0015] Furthermore, the locking component includes a fourth elastic element, a first locking rod, and a second locking rod. The movable block is provided with a connecting groove. One end of the fourth elastic element is connected to the connecting groove, and the other end is connected to the first locking rod. One end of the second locking rod is connected to the first locking rod, and the end face of the other end is provided with a bevel.

[0016] Furthermore, a second airbag is also provided in the mounting groove, the second airbag is connected to the extrusion plate, and the first airbag and the second airbag are located between the extrusion plate;

[0017] The first airbag is connected to the mounting cavity.

[0018] Furthermore, the outer diameter of the movable block is consistent with the inner diameter of the mounting cavity, and the inner wall of the mounting cavity is provided with a locking hole, which is connected to the first airbag through a channel;

[0019] The outer wall of the movable block is also provided with a groove, and a fifth elastic element and a limiting block are provided in the groove. The fifth elastic element is used to push the limiting block into the locking hole.

[0020] Furthermore, the dustproof net assembly includes a dustproof net and a mounting ring, the dustproof net being installed inside the mounting ring, and the movable push rod being connected to the mounting ring;

[0021] The mounting ring also has an annular groove on its outer circumference, and a third airbag is provided in the annular groove. The third airbag is connected to the second airbag through an air tube.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0023] When the headphones are used as semi-in-ear headphones, the dustproof mesh component is located inside the sound outlet to prevent external impurities from entering the sound outlet, thus achieving the purpose of dust protection for the semi-in-ear headphones. When the headphones are used as in-ear headphones, when the sound guide tube is inserted into the sound outlet, the movable component can push the dustproof component to move into the sound guide tube, thereby achieving the purpose of dust protection for the sound guide tube. Compared with the traditional method of using a double-layer dustproof mesh, the present invention can reduce the interference of the dustproof mesh on sound waves, thereby avoiding high-frequency sound attenuation or distortion and improving the sound quality of the headphones. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the earpiece of the present invention;

[0027] Figure 3 For the present invention Figure 2 A magnified structural diagram of section A in the middle;

[0028] Figure 4This is a structural schematic diagram of another state of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal structure of the earpiece of the present invention in another state;

[0030] Figure 6 For the present invention Figure 5 A magnified structural diagram of section B in the middle;

[0031] Figure 7 This is a schematic diagram of the structure of the dustproof net assembly of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the earplug body of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the earpiece of the present invention.

[0034] The attached diagram shows the markings and corresponding component names:

[0035] 1. Earphone body; 2. Earbud body; 4. In-ear part; 5. Dustproof mesh assembly; 6. Channel; 7. Limiting block; 8. Third elastic element; 9. Movable block; 10. First locking rod; 11. Second locking rod; 12. First airbag; 13. Squeezing plate; 14. Second airbag; 15. First elastic element; 16. Movable push rod; 17. Sound guide tube; 18. Dustproof mesh; 19. Mounting ring; 20. Third airbag; 21. Locking hole; 22. Mounting groove; 23. Annular protrusion. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0037] Example

[0038] like Figures 1 to 9 As shown, the present invention includes an earphone body 1 and an earbud body 2. The earbud body 2 is provided with a sound guide tube 17 that can be detachably connected to the ear inlet portion 4 of the earphone body 1. The ear inlet portion 4 of the earphone body 1 is provided with a movable component. The sound outlet of the ear inlet portion 4 is provided with a dustproof mesh assembly 5 whose outer diameter is the same as the inner diameter of the sound guide tube 17. When the sound guide tube 17 is connected to the ear inlet portion 4, the sound guide tube 17 can push the movable component to move the dustproof mesh assembly 5 into the sound guide tube 17.

[0039] In existing technologies, to facilitate switching between in-ear and semi-in-ear headphone designs to meet different user needs, a movable first dustproof mesh is installed inside the sound outlet of the existing headphones. Simultaneously, to prevent earwax and other impurities from entering the sound guide tube 17 of the earbud body 2 when used as in-ear headphones, a second dustproof mesh is also installed inside the sound guide tube 17 of the earbud body 2. This ensures that the dustproof mesh can prevent external impurities from entering when the headphones are used as in-ear or semi-in-ear headphones. However, because two dustproof meshes are simultaneously installed in the direction of the sound outlet of the headphone body 1 when the headphones are used as in-ear headphones, both meshes interfere with the sound waves emitted by the headphones, greatly increasing the interference effect. Consequently, when the headphones are used as in-ear headphones, high-frequency sounds may be attenuated or distorted, affecting the sound quality of the headphones. Therefore, this technical solution addresses this issue. Some earphone bodies 1 have a movable component inside the earbud portion 4. When the user uses the earphone as a semi-in-ear type, the dustproof mesh component 5 is located inside the sound outlet of the earbud portion 4, thus preventing dust from entering the sound outlet. When the user needs to use the earphone as an in-ear type, when the sound guide tube 17 on the earbud body 2 is inserted into the sound outlet, the sound guide tube 17 forces the movable component to move the dustproof mesh component 5, which was originally inside the sound outlet, into the sound guide tube 17, thus preventing dust from entering the sound guide tube 17. Therefore, since the dustproof mesh component 5 can extend into the sound guide tube 17 under the action of the movable component, the dustproof mesh component 5 can not only prevent dust from semi-in-ear earphones but also prevent dust from entering the earphone. Compared with the existing technology that uses two dustproof meshes when used as in-ear earphones, this technical solution can reduce the interference to sound waves, thereby avoiding high-frequency sound attenuation or distortion and improving the sound quality of the earphone.

[0040] The inner wall of the earpiece 4 is provided with a mounting groove 22. The movable component includes a first airbag 12 and a movable push rod 16. The first airbag 12 is located in the mounting groove 22. The mounting groove 22 is also provided with an annular protrusion 23. The annular protrusion 23 is provided with a blind mounting hole communicating with the first airbag 12. One end of the movable push rod 16 extends into the blind mounting hole, and the other end is connected to the dustproof mesh assembly 5.

[0041] In this embodiment, in order to ensure that when the sound guide tube 17 is connected to the earphone 4, the movable component can smoothly move the dustproof mesh assembly 5 located in the sound outlet hole into the sound guide tube 17, thereby achieving the purpose of dustproofing the sound guide tube 17, the movable component includes a first airbag 12 and a movable push rod 16. When the sound guide tube 17 is inserted into the sound outlet hole of the earphone 4, the end of the sound guide tube 17 is sleeved on the annular protrusion 23. At the same time, as the sound guide tube 17 moves on the annular protrusion 23, it will squeeze the first airbag 12, forcing the air inside the first airbag 12 to transfer to the mounting blind hole, pushing the movable push rod 16 in the mounting blind hole to move out of the mounting blind hole, thereby moving the dustproof mesh assembly 5 originally located in the sound outlet hole of the earphone 4 to the opening of the sound guide tube 17, ultimately achieving the purpose of dustproofing the sound guide tube 17 and preventing external impurities from entering the sound guide tube 17.

[0042] The outer diameter of the annular protrusion 23 is the same as the inner diameter of the sound guide tube 17, and the outer diameter of the sound guide tube 17 is the same as the inner diameter of the sound outlet hole. When the sound guide tube 17 moves along the axial direction of the sound outlet hole, the sound guide tube 17 can be sleeved on the annular protrusion 23 and compress the first airbag 12.

[0043] In this embodiment, in order to ensure that the sound guide tube 17 can be tightly fitted to the earpiece 4 when used as an in-ear headphone, the outer diameter of the annular protrusion 23 is the same as the inner diameter of the sound guide tube 17, and the outer diameter of the sound guide tube 17 is the same as the inner diameter of the sound outlet hole.

[0044] The blind mounting hole is also provided with a first elastic element 15, one end of which is connected to the inner wall of the blind mounting hole and the other end is connected to the movable push rod 16; the mounting groove 22 is also provided with a compression plate 13, and the sound guide tube 17 can push the compression plate 13 to compress the first airbag 12; the first airbag 12 is also provided with a second elastic element, which is distributed along the axial direction of the sound outlet hole, and the elastic force of the second elastic element is greater than the elastic force of the first elastic element 15.

[0045] In this embodiment, the outer diameter of the movable push rod 16 is consistent with the inner diameter of the mounting blind hole, ensuring that when the first airbag 12 is compressed, the air transferred from the first airbag 12 to the mounting blind hole can smoothly push the movable push rod 16 located in the mounting blind hole to move, thereby moving the dustproof mesh assembly 5 originally located in the sound outlet hole into the sound guide tube 17. At this time, the first elastic member 15 is in a stretched state. When it is necessary to convert the in-ear headphones into semi-in-ear headphones, the sound guide tube 17 is removed from the sound outlet hole of the earphone 4. After removing the compression on the first airbag 12, the movable push rod 16 can be quickly pulled back into the mounting blind hole under the action of the first elastic member 15, thereby driving the dustproof mesh assembly 5 located in the sound guide tube 17 to retract into the sound outlet hole, and re-protecting the earphone at the sound outlet hole.

[0046] In this embodiment, in order to ensure that the first airbag 12 can quickly recover its deformation, a second elastic element is also provided inside the first airbag 12. When the first airbag 12 is squeezed by the sound guide tube 17, the second elastic element is in a compressed state. Therefore, when the pressure of the sound guide tube 17 on the first airbag 12 is removed, the first airbag 12 can be forced to quickly recover its deformation under the action of the second elastic element. During the recovery of the first airbag 12 under the action of the second elastic element, the negative pressure generated inside it can draw back the air transferred to the blind hole, which further enables the movable push rod 16 to pull the dustproof net assembly 5 back quickly into the sound outlet hole.

[0047] The outer circumference of the sound guide tube 17 is also provided with a locking groove, which is distributed along the circumference of the sound guide tube 17; the ear inlet 4 is also provided with an installation cavity, which is provided with a third elastic element 8, a movable block 9 and a locking element. One end of the third elastic element 8 is connected to the inner wall of the installation cavity and the other end is connected to the movable block 9. One end of the locking element is connected to the movable block 9 and the other end extends into the sound outlet hole and is inserted into the locking groove of the sound guide tube 17 to fix the sound guide tube 17 in the sound outlet hole.

[0048] In this embodiment, when the earphone is used as an in-ear type, the sound guide tube 17 is inserted into the sound outlet hole. In order to ensure that the sound guide tube 17 can be stably fixed in the sound outlet hole, a locking groove is provided on the outer circumference of the sound guide tube 17. At the same time, a third elastic member 8, a movable block 9 and a locking member are also provided. When the locking groove on the outer surface of the sound guide tube 17 moves to the same radial position as the locking member, the movable block 9 moves in the mounting cavity and pushes the locking member into the locking groove, thereby fixing the sound guide tube 17 in the sound outlet hole of the earphone part 4, realizing the purpose of converting the semi-in-ear earphone into an in-ear earphone.

[0049] The locking component includes a fourth elastic element, a first locking rod 10, and a second locking rod 11. The movable block 9 is provided with a connecting groove. One end of the fourth elastic element is connected to the connecting groove, and the other end is connected to the first locking rod 10. One end of the second locking rod 11 is connected to the first locking rod 10, and the other end has a beveled edge.

[0050] In this embodiment, in the initial state, the earphone is used as a semi-in-ear type. The end of the locking member extends into the sound outlet. In order to facilitate the smooth installation of the sound guide tube 17 into the sound outlet, the locking member includes a fourth elastic member, a first locking rod 10, and a second locking rod 11. When the sound guide tube 17 is inserted into the sound outlet, the end of the sound guide tube 17 acts on the inclined side of the second locking rod 11, forcing the sound guide tube 17 to push the first locking rod 10 and the second locking rod 11 back and compress the fourth elastic member, thereby ensuring that the end of the sound guide tube 17 can pass smoothly through the second locking rod 11. When the locking groove on the side wall of the sound guide tube 17 moves to the same radial direction as the second locking rod 11, the fourth elastic member can force the second locking rod 11 to be inserted into the locking groove of the sound guide tube 17, thereby stably connecting the sound guide tube 17 to the earpiece.

[0051] The mounting groove 22 is also provided with a second airbag 14, which is connected to the extrusion plate 13. The first airbag 12 and the second airbag 14 are located between the extrusion plate 13. The first airbag 12 is connected to the mounting cavity.

[0052] In this embodiment, to further ensure that the locking member can be stably inserted into the locking groove of the sound guide tube 17 and stably connected to the earpiece 4, a second airbag 14 is also provided. Initially, when the sound guide tube 17 is not installed with the sound outlet, the elastic force generated by the third elastic member 8 pulls the locking member on the movable block 9 so that it does not extend into the sound outlet. When the sound guide tube 17 is inserted into the sound outlet and pushes the compression plate 13 to move within the mounting groove, the compression plate 13 pulls the second airbag 14 to expand. During expansion, a certain negative pressure is generated inside the second airbag 14, thereby... Air from the mounting cavity is drawn into the second airbag 14. The suction generated in the mounting cavity forces the movable block 9 to move towards the locking member, thereby pulling the locking member to press tightly against the outer surface of the sound guide tube 17. When the locking groove on the outer surface of the sound guide tube 17 has not moved to the same radial direction as the locking member, the first locking rod 10 and the second locking rod 11 retract and compress the fourth elastic member. When the locking groove moves to the same radial direction as the locking member, the action of the fourth elastic member forces the second locking rod 11 to be inserted into the locking groove of the sound guide tube 17, thereby stably fixing the sound guide tube 17 in the sound outlet hole of the earpiece.

[0053] The outer diameter of the movable block 9 is the same as the inner diameter of the mounting cavity. The inner wall of the mounting cavity is provided with a locking hole 21, which is connected to the first airbag 12 through the channel 6. The outer wall of the movable block 9 is also provided with a groove, in which a fifth elastic element and a limiting block 7 are provided. The fifth elastic element is used to push the limiting block 7 into the locking hole 21.

[0054] In this embodiment, to ensure that the movable block 9 is stably inserted into the locking groove of the sound guide tube 17 when the locking member is pulled, a fifth elastic member and a limiting block 7 are also provided on the movable block 9. When the sound guide tube 17 is inserted into the sound outlet and pushes the extrusion plate 13 to move, the extrusion plate 13 pulls the second airbag 14 during the stretching process. The negative pressure generated inside the second airbag 14 draws the air in the installation cavity into the second airbag 14, thereby causing the movable block 9 to move in the installation cavity, stretching the third elastic member 8, and pushing the locking member to move into the sound outlet, inserting the second locking rod 11 into the locking groove of the sound guide tube 17. When the limiting block 7 moves to be on the same straight line as the locking hole 21, the limiting block 7 can be inserted into the locking hole 21 under the action of the fifth elastic member, thereby fixing the movable block 9 in the installation cavity and preventing the movable block 9 from retracting during use, which would cause the sound guide tube 17 to fall out of the sound outlet.

[0055] In this embodiment, when it is necessary to remove the sound tube 17 from the sound outlet and convert the earphone from an in-ear type to a semi-in-ear type, in order to facilitate the unlocking of the locking member in the locking groove of the locking member, the locking hole 21 is connected to the first airbag 12 through the channel 6. In this way, the user can insert his finger or other tools into the earbud body 2 and push the dustproof mesh assembly 5 located in the sound tube 17 back. During the back-retraction, the dustproof mesh assembly 5 uses the movable push rod 16 to squeeze the air in the installation blind hole. Since the first airbag 12 is in a compressed state at this time, the air squeezed in the installation blind hole will be transferred to the locking hole 21 through the channel 6, thereby pushing the limiting block 7 in the locking hole 21 back into the groove. At this time, under the action of the third elastic member 8, the movable block 9 will be pulled back, and finally the locking member originally inserted into the locking groove will be pulled back, removing the constraint on the sound tube 17, so that the sound tube 17 can be smoothly removed from the earbud part 4.

[0056] The dustproof net assembly 5 includes a dustproof net 18 and an mounting ring 19. The dustproof net 18 is installed inside the mounting ring 19, and the movable push rod 16 is connected to the mounting ring 19. The outer circumference of the mounting ring 19 is also provided with an annular groove, and a third airbag 20 is provided inside the annular groove. The third airbag 20 is connected to the second airbag 14 through an air pipe.

[0057] In this embodiment, in order to ensure that the dustproof net assembly 5 can move within the sound outlet, the dustproof net assembly 5 includes a dustproof net 18 and a mounting ring 19. The dustproof net 18 is used to isolate external impurities, and the mounting ring 19 is used to stably connect the dustproof net 18 to the movable push rod 16, thereby realizing the adjustment of the position of the dustproof net 18.

[0058] In another embodiment, the outer surface of the earpiece 4 is also provided with a pressure relief hole connected to the mounting cavity. The pressure relief hole communicates with the mounting cavity connected to the third elastic member 8, ensuring that the movable block 9 can move smoothly within the mounting cavity.

[0059] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A Bluetooth headset, comprising a headset body (1) and an earbud body (2), wherein the earbud body (2) is provided with a sound guide tube (17) detachably connected to the earpiece portion (4) of the headset body (1), characterized in that, The earphone body (1) has a movable part in the ear inlet (4), and the ear inlet (4) has a dustproof mesh assembly (5) with an outer diameter that is the same as the inner diameter of the sound guide tube (17). When the sound guide tube (17) is connected to the ear inlet (4), the sound guide tube (17) can push the movable part to move the dustproof mesh assembly (5) into the sound guide tube (17).

2. A Bluetooth headset according to claim 1, characterized in that, The inner wall of the earpiece (4) is provided with a mounting groove (22). The movable part includes a first airbag (12) and a movable push rod (16). The first airbag (12) is located in the mounting groove (22). The mounting groove (22) is also provided with an annular protrusion (23). The annular protrusion (23) is provided with a blind hole for installation that communicates with the first airbag (12). One end of the movable push rod (16) extends into the blind hole for installation, and the other end is connected to the dustproof mesh assembly (5).

3. A Bluetooth headset according to claim 2, characterized in that, The outer diameter of the annular protrusion (23) is the same as the inner diameter of the sound guide tube (17), and the outer diameter of the sound guide tube (17) is the same as the inner diameter of the sound outlet hole. When the sound guide tube (17) moves along the axial direction of the sound outlet, the sound guide tube (17) can be sleeved on the annular protrusion (23) and compress the first airbag (12).

4. A Bluetooth headset according to claim 2, characterized in that, The blind mounting hole is also provided with a first elastic element (15), one end of which is connected to the inner wall of the blind mounting hole, and the other end is connected to the movable push rod (16); The mounting groove (22) is also provided with a compression plate (13), and the sound guide tube (17) can push the compression plate (13) to compress the first airbag (12); The first airbag (12) is also provided with a second elastic element, which is distributed along the axial direction of the sound outlet hole, and the elastic force of the second elastic element is greater than that of the first elastic element (15).

5. A Bluetooth headset according to claim 2, characterized in that, The outer circumference of the sound guide tube (17) is also provided with a locking groove, which is distributed along the circumference of the sound guide tube (17); The earpiece (4) is also provided with an installation cavity. The installation cavity is provided with a third elastic element (8), a movable block (9) and a locking element. One end of the third elastic element (8) is connected to the inner wall of the installation cavity and the other end is connected to the movable block (9). One end of the locking element is connected to the movable block (9) and the other end extends into the sound outlet and is inserted into the locking groove of the sound guide tube (17) to fix the sound guide tube (17) in the sound outlet.

6. A Bluetooth headset according to claim 5, characterized in that, The locking component includes a fourth elastic element, a first locking rod (10) and a second locking rod (11). The movable block (9) is provided with a connecting groove. One end of the fourth elastic element is connected to the connecting groove and the other end is connected to the first locking rod (10). One end of the second locking rod (11) is connected to the first locking rod (10) and the other end has a bevel.

7. A Bluetooth headset according to claim 5, characterized in that, The mounting groove (22) is also provided with a second airbag (14), which is connected to the extrusion plate (13). The first airbag (12) and the second airbag (14) are located between the extrusion plate (13). The first airbag (12) is connected to the mounting cavity.

8. A Bluetooth headset according to claim 5, characterized in that, The outer diameter of the movable block (9) is consistent with the inner diameter of the mounting cavity. The inner wall of the mounting cavity is provided with a locking hole (21), and the locking hole (21) is connected to the first airbag (12) through the channel (6). The outer wall of the movable block (9) is also provided with a groove, and a fifth elastic element and a limiting block (7) are provided in the groove. The fifth elastic element is used to push the limiting block (7) into the locking hole (21).

9. A Bluetooth headset according to claim 7, characterized in that, The dustproof net assembly (5) includes a dustproof net (18) and a mounting ring (19). The dustproof net (18) is installed inside the mounting ring (19), and the movable push rod (16) is connected to the mounting ring (19). The mounting ring (19) is also provided with an annular groove on its outer circumference, and a third airbag (20) is provided in the annular groove. The third airbag (20) is connected to the second airbag (14) through an air tube.

Images