CN116389966B

CN116389966B - Bluetooth earphone

Info

Publication number: CN116389966B
Application number: CN202310586554.3A
Authority: CN
Inventors: 龙宇; 林琦; 周柏亦
Original assignee: Chengdu Weak Water Technology Co ltd
Current assignee: Chengdu Weak Water Technology Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-08-22
Anticipated expiration: 2043-05-24
Also published as: CN116389966A

Abstract

The application discloses a Bluetooth earphone, which comprises an earphone body and an earplug body, wherein an ear-in part of the earphone body is provided with a groove for accommodating the earplug body, a rotary sphere is arranged in the ear-in part of the earphone body, a sound guide tube is arranged in the earphone body, and the sound guide tube is connected with the rotary sphere through threads; one end of the sound guide pipe is connected with the mounting part of the earplug body, and the other end of the sound guide pipe is provided with an expansion piece positioned in the earphone body, and when the sound guide pipe moves towards the inside of the earphone body along the axial direction, the expansion piece can stretch and expand; the earplug body is internally provided with a cavity communicated with the expansion piece, and when the expansion piece stretches and expands, negative pressure for sucking fluid in the cavity can be generated in the expansion piece, so that the earplug body is compressed into the groove. According to the application, the negative pressure generated in the expansion process of the expansion piece is utilized to compress the earplug body, so that the earplug body is stored in the in-ear part of the earphone body, the switching between the in-ear type and the half-in-ear type of a user is realized, and the use requirements under different conditions are met.

Description

Bluetooth earphone

Technical Field

The application relates to the technical field of earphones, in particular to a Bluetooth earphone.

Background

Like products in the market at present are divided into an in-ear type earplug and a half in-ear type earplug, and the in-ear type earplug is deep in an auditory canal, so that the firmness is good, the tightness is strong, and the tone quality is relatively good; and the half-in-ear type wearing comfort is relatively good. In-ear headphones or semi-in-ear headphones typically include an in-ear portion and a hand-held portion. The ear-in part extends into the auditory canal of the human body when the earphone is worn and contacts with the skin of the auditory canal; the handheld part is positioned outside the ear when the earphone is worn, so that the earphone is convenient for a user to hold, pick and place.

The traditional two in-ear earphone cannot be used commonly and exchanged, and only two different earphone types can be purchased respectively to obtain different use experiences, so that the use requirements of users in different scenes cannot be met.

Disclosure of Invention

The application aims to overcome the defects in the prior art, and aims to provide a Bluetooth earphone, which compresses an earplug body by utilizing negative pressure generated in the expansion process of an expansion piece, so that the earplug body is stored in an in-ear part of the earphone body, further, the switching between in-ear and half-in-ear modes of a user is realized, and the use requirements under different conditions are met.

The application is realized by the following technical scheme:

the Bluetooth earphone comprises an earphone body and an earplug body, wherein an ear-in part of the earphone body is provided with a groove for accommodating the earplug body, a rotary sphere is arranged in the ear-in part of the earphone body, a sound guide tube is arranged in the earphone body, and the sound guide tube is connected with the rotary sphere through threads;

one end of the sound guide tube is connected with the mounting part of the earplug body, and the other end of the sound guide tube is provided with an expansion piece positioned in the earphone body, and when the sound guide tube moves towards the inside of the earphone body along the axial direction, the expansion piece can stretch and expand;

the earplug is characterized in that a cavity communicated with the expansion piece is arranged in the earplug body, and when the expansion piece stretches and expands, negative pressure for sucking fluid in the cavity can be generated in the expansion piece, so that the earplug body is compressed into the groove.

Further, one end of the expansion piece is fixed on the circumferential outer wall of the sound guide tube, and the other end of the expansion piece is in sliding connection with the circumferential outer wall of the sound guide tube;

the expansion piece is internally provided with a first elastic piece, the first elastic piece is sleeved on the sound guide tube, and two ends of the first elastic piece are respectively connected with two ends of the expansion piece.

Further, a limit table is arranged at the end part of the sound guide tube extending out of the earphone body, a connecting hole is arranged on the mounting part of the earplug body, and the earplug body is sleeved on the sound guide tube through the connecting hole;

a connector is arranged on the inner wall of the connecting hole of the earplug body, one end of the connector is positioned in the connecting hole, and the other end of the connector is provided with a connecting pipe which is communicated with the cavity of the expansion piece;

a channel is arranged in the sound guide tube, one end of the channel is communicated with the inside of the expansion piece, and the other end of the channel is communicated with the connector.

Further, a spherical groove for installing a rotary sphere is formed in the ear insertion part of the earplug body, and the rotary sphere is positioned in the spherical groove;

the earplug is characterized in that a limit rod is further arranged on the inner wall of the spherical groove of the earplug body, a limit groove corresponding to the limit rod is further formed in the side wall of the rotary sphere, and the limit rod can axially move and be inserted into the limit hole groove.

Further, an installation groove corresponding to the limit groove is further formed in the inner wall of the spherical groove of the earplug body, a flexible guide tube is arranged in the installation groove, one end of the guide tube is fixed in the installation groove, a connecting block is arranged at the other end of the guide tube, and the guide tube is sleeved on one end of the limit rod;

the connecting block is fixed in the limiting groove, a positioning hole with the inner diameter matched with the outer diameter of the limiting rod is formed in the connecting block, and the positioning hole is communicated with the guide pipe.

Further, the inside of the ear part of the earphone body is also provided with an installation cavity with the inner diameter consistent with the outer diameter of the limiting rod, a second elastic piece is arranged in the installation cavity, and the other end of the limiting rod extends into the installation cavity and is connected with the second elastic piece.

Further, an air bag is arranged on the side wall of the mounting part of the earplug body, and the air bag is communicated with the mounting cavity through a catheter;

the inner wall of the earplug body is also provided with a fourth elastic piece, and the fourth elastic piece is provided with an extrusion rod connected with the outer wall of the air bag.

Compared with the prior art, the application has the following advantages and beneficial effects:

1. according to the application, the air in the earplug body is transferred into the expansion piece by utilizing the suction force generated by the expansion piece in the expansion process, so that the compression of the earplug body is realized, the earplug body in an expansion state is compressed to a smaller volume and is stored in the in-ear part of the earphone body, the function of switching the Bluetooth earphone from the in-ear earphone to the half-in-ear earphone is realized, and the Bluetooth earphone is convenient for a user to flexibly use under different conditions;

2. according to the Bluetooth earphone, the rotating ball body arranged in the earphone body can be used for rotating the earphone body, so that when the Bluetooth earphone is used as an in-ear earphone, the earphone body can rotate freely on the earphone body, the in-ear angle of the earphone body when the earphone body is worn is adjusted, and the comfort level of a user when the earphone is worn is improved;

3. when the extension length of the sound guide tube is required to be adjusted, the air bag is extruded, so that air in the air bag is transferred into the mounting cavity, and the limiting rod in the mounting cavity is pushed to extend into the limiting groove of the rotary ball body, limiting of the rotary ball body is achieved, and synchronous rotation of the rotary ball body and the sound guide tube is prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present application;

fig. 2 is a schematic structural diagram of the earphone body according to the present application as an in-ear earphone;

fig. 3 is a schematic structural view of the earphone body according to the present application as a half in-ear type;

FIG. 4 is an enlarged schematic view of the portion A of FIG. 2 according to the present application;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 3 according to the present application;

FIG. 6 is a schematic view of the structure of the extrusion rod and the fourth elastic member of the present application;

fig. 7 is a schematic view of the structure of a plug body according to another embodiment of the present application.

In the drawings, the reference numerals and corresponding part names:

1. an earphone body; 2. an earplug body; 3. an expansion member; 4. rotating the sphere; 5. a sound guide tube; 7. a groove; 8. a conduit; 10. an air bag; 11. a first elastic member; 12. a cavity; 13. a second elastic member; 14. a limit rod; 16. a guide tube; 17. positioning holes; 18. a connecting block; 19. a connecting pipe; 20. a connector; 21. a channel; 22. a dust screen; 23. a limiting table; 25. a fourth elastic member; 26. an extrusion rod; 27. and (5) evacuating the pipe.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.

Examples

As shown in fig. 1 to 6, the earphone comprises an earphone body 1 and an earplug body 2, wherein a groove 7 for accommodating the earplug body 2 is arranged at an ear-in part of the earphone body 1, a rotary sphere 4 is arranged in the ear-in part of the earphone body 1, a sound guide tube 5 is arranged in the earphone body 1, and the sound guide tube 5 is connected with the rotary sphere 4 through threads; one end of the sound guide tube 5 is connected with the mounting part of the earplug body 2, the other end of the sound guide tube is provided with an expansion piece 3 positioned in the earphone body 1, and when the sound guide tube 5 moves towards the inside of the earphone body 1 along the axial direction, the expansion piece 3 can stretch and expand; the earplug body 2 is internally provided with a cavity 12 communicated with the expansion piece 3, and when the expansion piece 3 stretches and expands, negative pressure for sucking fluid in the cavity 12 can be generated in the expansion piece 3, so that the earplug body 2 is compressed into the groove 7.

Aiming at the Bluetooth earphone in the prior art, the Bluetooth earphone is generally divided into an in-ear earphone and a half-in-ear earphone, wherein a silica gel sleeve is arranged at the in-ear part of the in-ear earphone, and the active noise reduction function of the Bluetooth earphone is realized by utilizing good tightness between the silica gel sleeve and an ear canal of a user, but the Bluetooth earphone is not suitable for long-time use of the user; the outer diameter of the ear-in part of the semi-in earphone is usually smaller than the ear canal of a user, so that the user cannot feel pressure to the ear canal of the user in the using process, the earphone is suitable for being worn for a long time, but the ear-in part of the semi-in earphone cannot be radially sealed to the ear canal, so that the earphone cannot have the noise reduction function.

When the user needs to use the earphone function of making an uproar, when using the earphone as the in-ear earphone, rotate the sound pipe 5 that sets up, because the sound pipe 5 is connected through the rotation spheroid 4 in the ear is gone into to screw thread and earphone body 1, when rotating clockwise to sound pipe 5, the sound pipe 5 that sets up stretches out gradually from earphone body 1, thereby drive the earplug body 2 that originally lies in recess 7 outwards stretches out from recess 7, earplug body 2 protrusion to the in-ear department of earphone body 1 this moment, therefore the user is when using, put into the ear canal with earplug body 2, utilize earplug body 2 and the contact of ear canal inner wall, thereby realize the sealing to the user's ear canal, and then make bluetooth earphone can realize the function of initiatively making an uproar.

Meanwhile, the ear-in part of the semi-in-ear earphone is usually smaller than the inner diameter of the auditory canal, so that the comfort of long-time wearing of a user can be ensured; the outer diameter of the silica gel sleeve of the in-ear earphone is generally larger than the inner diameter of the auditory canal, so that the silica gel sleeve can be ensured to be capable of effectively radially sealing the auditory canal of a user to realize the purposes of sound insulation and noise reduction, therefore, in the embodiment, in order to realize the rapid conversion between the semi-in-ear earphone and the in-ear earphone, an expansion piece 3 is further arranged in the earphone body 1 of the in-ear earphone, when the in-ear earphone 5 moves along the axial direction of the in-ear earphone, the expansion piece 3 on the in-ear earphone can be extruded or stretched, meanwhile, the earplug body 2 in the embodiment is made of silica gel, a cavity 12 is arranged in the in-ear part of the earplug body 2, and the cavity 12 is communicated with the expansion piece 3, so that in the embodiment, when the earphone user needs to use the semi-in-ear earphone, the in-ear earphone body 1 of the in-ear earphone, the in-ear earphone is rotated, the in-tube 5 gradually enters into the earphone body 1, the in-ear earphone, the expansion piece 3 is stretched, the expansion piece 3 is arranged, and the expansion piece 3 is produced in the process of stretching the in the axial movement, the expansion piece 3 in the negative pressure, and the expansion piece 2 is gradually compressed, and the cavity 2 is gradually contained in the cavity 2, and the cavity 2 is gradually compressed by the cavity 2, and the cavity 2 is gradually contained in the cavity 2; when the user needs to use the earphone as an in-ear earphone, the sound guide tube 5 is reversely rotated, so that the sound guide tube 5 gradually extends out of the earplug body 2, and the sound guide tube 5 compresses the expansion piece 3 which is originally in an expansion state in the outward extending process, so that the gas which is originally sucked by the expansion piece 3 is extruded into the cavity 12 of the earplug body 2, the compression degree of the expansion piece 3 is gradually increased at any time, the gas which is extruded into the cavity 12 of the earplug body 2 is gradually increased, the earplug body 2 which is finally compressed is gradually expanded, and the earplug body 2 is connected with the sound guide tube 5, so that the sound guide tube 5 pushes the earplug body 2 to gradually expand under the action of the expansion piece 3 in the process of moving out of the earplug body 2 from the in-ear groove of the earphone body 1, and finally the earplug body 2 is expanded at the in-ear part of the earphone body 1, and at this moment, when the user wears the in-ear earphone in the embodiment, the earplug body 2 in an expansion state can be effectively attached to the auditory canal of the user, so that the purpose of noise reduction is achieved.

Meanwhile, the traditional in-ear earphone's silica gel cover is not the same size generally, therefore, the user is when buying the earphone, often all can additionally give several pairs of not equidimension silica gel covers, so as to satisfy different crowds and use, but even so can also have the silica gel cover and can't carry out the travelling comfort laminating with user's ear canal, can't make earplug body 2 carry out the travelling comfort laminating with the ear canal, and the expansion piece 3 that this technical scheme set up not only can be used for expansion or compression to earplug body 2, in order to reach the switching between in-ear earphone and the half in-ear earphone of this embodiment, the expansion piece 3 that sets up simultaneously is along with the in-process that sound pipe 5 stretches out gradually, the degree of compression of expansion piece 3 increases, and then lead to expansion piece 3 to extrude to the in-ear earphone body 2 gaseous increase, finally lead to the expansion of earplug body 2 big, consequently, when in-ear state earphone's the time can be adjusted through adjusting the expansion piece 3 to the expansion amount of sound pipe 5 in the use of this embodiment, and then control earplug body 2 expansion amount, earplug body 2 has guaranteed that earplug body 2 can have better in-ear comfort with the user's of wearing.

The sound guide tube 5 that sets up in this embodiment is connected with the rotation spheroid 4 through the screw thread, realizes the removal of sound guide tube 5 at axial, because the rotation spheroid 4 that sets up can freely rotate in earphone body 1 for sound guide tube 5 can freely rotate in earphone body 1's in-ear department, design like this, when making the user use earphone effect in-ear, the earplug body 2 that sets up can freely rotate for earphone body 1, has guaranteed that earplug body 2 can wear in user's ear canal betterly, further improves the comfort level when the user uses earphone as in-ear earphone.

One end of the expansion piece 3 is fixed on the circumferential outer wall of the sound guide tube 5, and the other end of the expansion piece is connected with the circumferential outer wall of the sound guide tube 5 in a sliding manner; the inside of expansion member 3 is equipped with first elastic component 11, first elastic component 11 cover is established on the sound pipe 5, and the both ends of first elastic component 11 are connected with the both ends of expansion member 3 respectively.

The expansion member 3 in this embodiment is preferably a bellows, and since the bellows can stretch along the axial direction thereof, the expansion member 3 of the bellows structure is sleeved at one end of the sound guide tube 5 extending into the earphone body 1, and one end of the expansion member is fixed on the sound guide tube 5, and the other end of the expansion member is slidably connected with the sound guide tube 5, so that the inside of the expansion member 3 can be in better air tightness.

In this embodiment, in order to ensure that the expansion member 3 moves on the sound guide tube 5 towards the movable end of the rotating ball 4, the gas inside the expansion member 3 is prevented from leaking through the thread on the outer wall of the sound guide tube 5 and the expansion member 3 is provided with a sleeve (not shown in the figure) at the end of the expansion member 3 towards the rotating ball 4, the sleeve is sleeved on the sound guide tube 5, one end of the sleeve is rotationally connected with the end of the expansion member 3 through a sealing ring, the other end of the sleeve is connected with the rotating ball 4, namely, a sleeve is arranged between the expansion member 3 and the rotating ball 4, and the gas inside the expansion member 3 can be prevented from leaking through the thread on the outer wall of the sound guide tube 5 by using the arranged sleeve.

In this embodiment, in order to ensure that the expansion member 3 can stretch and expand smoothly, the expansion member 3 is further provided with a first elastic member 11 inside the expansion member 3, the first elastic member 11 is a spring, and is sleeved on the sound guide tube 5, so that when the expansion member 3 is in a compressed state, the first elastic member 11 located in the expansion member 3 is also in a compressed state, and therefore, when the sound guide tube 5 extends into the earphone body 1, under the action of the first elastic member 11, the expansion member 3 can be pushed to expand sufficiently, and thus, the air in the cavity 12 of the earplug body 2 is effectively absorbed.

The end of the sound guide tube 5 extending out of the earphone body 1 is provided with a limiting table 23, the mounting part of the earplug body 2 is provided with a connecting hole, and the earplug body 2 is sleeved on the sound guide tube 5 through the connecting hole.

The connection mode of the earplug body 2 and the sound guiding tube 5 in this embodiment is consistent with the existing mode, that is, the installation part of the earplug body 2 with elasticity is sleeved on the sound guiding tube 5, and the limiting table 23 is used for limiting, so that the connection between the earplug body 2 and the sound guiding tube 5 is realized.

A connector 20 is arranged on the inner wall of the connecting hole of the earplug body 2, one end of the connector 20 is positioned in the connecting hole, the other end of the connector is provided with a connecting pipe 19, and the connecting pipe 19 is communicated with the cavity 12 of the expansion piece 3; a channel 21 is arranged in the sound guide tube 5, one end of the channel 21 is communicated with the inside of the expansion piece 3, and the other end is communicated with the connector 20.

In order to realize the communication between the expansion member 3 and the cavity 12 of the earplug body 2, a channel 21 is provided on the sound guiding tube 5, and the channel 21 is communicated with the connecting tube 19 by the provided connector 20, thereby realizing the communication between the expansion member 3 and the cavity 12 of the earplug body 2.

As shown in fig. 7, in one embodiment, in the process of converting the in-ear earphone into the semi-in-ear earphone, in order to ensure that the periphery of the arranged earplug body 2 can be compressed towards the middle direction, the volume of the finally compressed earplug body 2 is reduced so as to reduce the size of a groove formed at the in-ear part of the earplug body 1, so that an air exhaust pipe 27 is further arranged inside the earplug body 2, one end of the air exhaust pipe 27 is positioned in the cavity 12 of the earplug body 2, the air exhaust pipe 27 is in sealing connection with the edge of the earplug body 2, the other end of the air exhaust pipe 27 is connected with the channel 21 through a connector 20, and the part of the arranged air exhaust pipe 27 positioned in the cavity 12 is in a corrugated pipe structure, so that when the expansion piece 3 is expanded to extract air positioned in the earplug body 2, the air in the cavity 12 of the earplug body 2 is extracted through a connecting pipe 19, and the space size of the cavity 12 is reduced so as to achieve the purpose of compressing the earplug body 2. Simultaneously, the negative pressure that expansion member 3 produced in the expansion process can be fast with the inside gas extraction of evacuation pipe 27, along with the gradual increase of the negative pressure that expansion member 3 produced, the negative pressure in the evacuation pipe 27 also increases gradually, force evacuation pipe 27 to shrink along its axial, the in-process of shrink, the evacuation pipe 27 is in the shrink, draw earplug body 2 all around towards earplug body 2 installation department shrink, finally draw earplug body 2 together inwards, thereby the whole volume after the compression of earplug body 2 has been reduced, it can accomodate to less recess 7 to have guaranteed earplug body 2.

Similarly, when the earplug body 2 stored in the groove 7 needs to be quickly expanded, the air in the expansion piece 3 can be quickly transferred to the peripheral edge of the earplug body 2 by using the arranged evacuation tube 27, so that the earplug body 2 can be quickly expanded, and the corresponding speed of a user during use is improved.

A spherical groove for installing the rotary sphere 4 is formed in the ear-in part of the earphone body 1, and the rotary sphere 4 is located in the spherical groove.

In order to ensure that the arranged rotary sphere 4 can rotate freely in the earphone body 1, a spherical groove matched with the rotary sphere 4 is arranged.

The earphone is characterized in that a limiting rod 14 is further arranged on the inner wall of the spherical groove of the earphone body 1, a limiting groove corresponding to the limiting rod 14 is further formed in the side wall of the rotary sphere 4, and the limiting rod 14 can axially move and be inserted into the limiting hole groove.

Because in this technical scheme in order to improve the laminating degree between earplug body 2 and the ear canal when wearing to improve the comfort level when the user uses, so be provided with and rotate spheroid 4 and lead sound pipe 5 and be connected, make lead sound pipe 5 can freely rotate under the effect of rotating spheroid 4, adjust the inclination between earplug body 2 and the earphone body 1, but because adopt the mode of screw thread to connect between sound pipe 5 and the rotation spheroid 4, consequently, the rotation spheroid 4 that the sound pipe 5 rotated in order to adjust its when stretching out the length on earphone body 1 is easy to follow the rotation of sound pipe 5, thereby can't realize the position control of sound pipe 5, so in order to prevent that rotation spheroid 4 from following the rotation of sound pipe 5 together, so be provided with gag lever post 14 in this embodiment, when the position of needs adjusting sound pipe 5, utilize gag lever post 14 to stretch into the spacing inslot on the side wall of rotation spheroid 4, thereby it rotates to have restricted that rotation spheroid 4 follows sound pipe 5 together.

The inner wall of the spherical groove of the earphone body 1 is also provided with an installation groove corresponding to the limit groove, a flexible guide tube 16 is arranged in the installation groove, one end of the guide tube 16 is fixed in the installation groove, the other end is provided with a connecting block 18, and the guide tube 16 is sleeved on one end of the limit rod 14; the connecting block 18 is fixed in the limiting groove, a positioning hole 17 with the inner diameter matched with the outer diameter of the limiting rod 14 is arranged on the connecting block 18, and the positioning hole 17 is communicated with the guide pipe 16.

Because the rotary sphere 4 can freely rotate in the use process to ensure that the earplug body 2 and the auditory canal of a user have better fitting degree, but the rotary sphere 4 is in the rotating process, after the dislocation of the limiting groove and the limiting rod 14 on the rotary sphere 4 occurs, the limiting rod 14 cannot be inserted into the limiting groove to limit the rotary sphere 4 when the rotary sphere 4 needs to be limited to adjust the position of the sound guide tube 5, in this embodiment, the inner diameter of the mounting groove is larger than the outer diameter of the limiting rod 14 on the inner wall of the spherical groove of the earphone body 1, and the guiding tube 16 is arranged in the mounting groove, and is of a tubular structure made of flexible materials, such as a corrugated tube or an elastic metal net tube, and the like, and the two ends of the guiding tube 16 are respectively connected with the connecting block 18 and the earplug body 2 in the rotary sphere 4, so that the free rotary movement range of the earplug body 2 can be limited by using the guiding tube 16, and the preferred earplug body 2 and the ear-in-ear axis range formed by the earphone body 1 are 0-30 DEG, and the difference between the two earplugs can be worn by users in a large range of users in a small range of about 2 mm.

When the earplug body 2 is rotated, the user drives the rotary sphere 4 to rotate together, the rotary sphere 4 is bent near the outer wall of the rotary sphere 4 in the rotating process, and the limiting rod 14 stretches into the guide tube 16, so that when the user needs to limit the rotary sphere 4, the limiting rod 14 moves in the guide tube 16, under the action of the guide tube 16, the limiting groove which is originally misplaced can be aligned with the limiting rod 14, the limiting rod 14 is finally inserted into the positioning hole 17 of the connecting block 18, the limiting rod 14 is utilized to limit the rotary sphere 4, and the rotary sphere 4 is prevented from synchronously rotating along with the sound guide tube 5.

The earphone is characterized in that an installation cavity with the inner diameter consistent with the outer diameter of the limiting rod 14 is further arranged in the ear insertion part of the earphone body 1, a second elastic piece 13 is arranged in the installation cavity, and the other end of the limiting rod 14 extends into the installation cavity and is connected with the second elastic piece 13.

In this embodiment, in order to prevent the set stop lever 14 from automatically sliding into the stop groove of the rotary sphere, a second elastic member 13 is provided, and when no external force acts on the second elastic member 13, the second elastic member pulls the stop lever 14 to retract into the installation cavity.

An air bag 10 is arranged on the side wall of the mounting part of the earplug body 2, and the air bag 10 is communicated with the mounting cavity through a catheter 8; the inner wall of the earplug body 2 is also provided with a fourth elastic piece 25, and the fourth elastic piece 25 is provided with a squeezing rod 26 connected with the outer wall of the air bag 10.

In this embodiment, in order to realize automatic movement of the limit rod 14 and thus limit the rotary sphere 4, the air bag 10 is disposed at the mounting portion of the earplug body 2, when the user needs to rotate the sound guide tube 5, the user pinches the earplug body 2, the earplug body 2 extrudes the fourth elastic member 25, and the fourth elastic member 25 pushes the extrusion rod 26 to extrude the air bag 10 after reaching a certain compression amount, so that the air in the air bag 10 is extruded into the mounting cavity, and pushes the limit rod 14 in the mounting cavity to extend into the limit groove of the rotary sphere 4, thereby limiting the rotary sphere 4; when the external force acting on the earplug body 2 is removed, the limiting rod 14 is pulled to retract to the mounting cavity under the action of the second elastic piece 13, and the limiting rod 14 presses the gas in the mounting cavity in the process of retracting to the mounting cavity, so that the gas moves back to the air bag 10 again, and the earplug can be used continuously later.

In this embodiment, in order to place earplug body 2 and wear the in-process of wearing, the extrusion that the ear canal produced earplug body 2 causes the compression of gasbag 10, thereby it is spacing to lead to gag lever post 14 to stretch into the spacing inslot to rotate spheroid 4, and then it can't freely rotate to have led to earplug body 2, the comfort level when having reduced the user and wearing, so be provided with fourth elastic component 25 in extrusion stem 26 department, the user is when wearing earplug body 2, the extrusion of ear canal to earplug body 2 can act on fourth elastic component 25, the elasticity of fourth elastic component 25 that sets is less than the elasticity of second elastic component 13, make fourth elastic component 25 compressed preferentially, only after fourth elastic component 25 compresses to a certain extent, fourth elastic component 25 promotes extrusion stem 26 again and compresses gasbag 10, effectively prevent earplug body 2 in the circumstances that leads to gasbag 10 to be compressed to appear in the in-process of wearing.

A dust screen 22 is also arranged in the sound guide tube 5.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.

Claims

1. The Bluetooth headset comprises a headset body (1) and an earplug body (2), and is characterized in that a groove (7) for accommodating the earplug body (2) is formed in an in-ear part of the headset body (1), a rotary sphere (4) is arranged in the in-ear part of the headset body (1), a sound guide tube (5) is arranged in the headset body (1), and the sound guide tube (5) is connected with the rotary sphere (4) through threads;

one end of the sound guide tube (5) is connected with the mounting part of the earplug body (2), the other end of the sound guide tube is provided with an expansion piece (3) positioned in the earphone body (1), and when the sound guide tube (5) moves towards the inside of the earphone body (1) along the axial direction, the expansion piece (3) can stretch and expand;

the earplug is characterized in that a cavity (12) communicated with the expansion piece (3) is arranged in the earplug body (2), and when the expansion piece (3) stretches and expands, negative pressure for sucking fluid in the cavity (12) can be generated in the expansion piece (3) and the earplug body (2) is compressed into the groove (7).

2. A bluetooth headset according to claim 1, wherein one end of the expansion member (3) is fixed to the circumferential outer wall of the sound guiding tube (5), and the other end is slidably connected to the circumferential outer wall of the sound guiding tube (5);

the expansion piece (3) is internally provided with a first elastic piece (11), the first elastic piece (11) is sleeved on the sound guide tube (5), and two ends of the first elastic piece (11) are respectively connected with two ends of the expansion piece (3).

3. The Bluetooth headset of claim 1, wherein the end part of the sound guide tube (5) extending out of the headset body (1) is provided with a limiting table (23), the mounting part of the earplug body (2) is provided with a connecting hole, and the earplug body (2) is sleeved on the sound guide tube (5) through the connecting hole;

a connector (20) is arranged on the inner wall of the connecting hole of the earplug body (2), one end of the connector (20) is positioned in the connecting hole, a connecting pipe (19) is arranged at the other end of the connector, and the connecting pipe (19) is communicated with the cavity (12) of the expansion piece (3);

a channel (21) is arranged in the sound guide tube (5), one end of the channel (21) is communicated with the inside of the expansion piece (3), and the other end of the channel is communicated with the connector (20).

4. A bluetooth headset according to claim 1, characterized in that the ear-in part of the headset body (1) is provided with a spherical recess for mounting a rotary sphere (4), the rotary sphere (4) being located in the spherical recess;

the earphone is characterized in that a limiting rod (14) is further arranged on the inner wall of the spherical groove of the earphone body (1), a limiting groove corresponding to the limiting rod (14) is further formed in the side wall of the rotary sphere (4), and the limiting rod (14) can axially move along the limiting rod and is inserted into the limiting hole groove.

5. The Bluetooth headset of claim 4, wherein the inner wall of the spherical groove of the headset body (1) is further provided with a mounting groove corresponding to the limit groove, a flexible guide tube (16) is arranged in the mounting groove, one end of the guide tube (16) is fixed in the mounting groove, the other end of the guide tube is provided with a connecting block (18), and the guide tube (16) is sleeved on one end of the limit rod (14);

the connecting block (18) is fixed in the limiting groove, a positioning hole (17) with the inner diameter matched with the outer diameter of the limiting rod (14) is formed in the connecting block (18), and the positioning hole (17) is communicated with the guide pipe (16).

6. The Bluetooth headset of claim 5, wherein an installation cavity with the inner diameter being identical to the outer diameter of the limiting rod (14) is further arranged in the ear-in part of the headset body (1), a second elastic piece (13) is arranged in the installation cavity, and the other end of the limiting rod (14) extends into the installation cavity and is connected with the second elastic piece (13).

7. The Bluetooth headset of claim 6, wherein the side wall of the mounting part of the earplug body (2) is provided with an air bag (10), and the air bag (10) is communicated with the mounting cavity through a catheter (8);

the earplug is characterized in that a fourth elastic piece (25) is further arranged on the inner wall of the earplug body (2), and an extrusion rod (26) connected with the outer wall of the air bag (10) is arranged on the fourth elastic piece (25).