CN117221778B - Adjustable headphone - Google Patents

Abstract

The utility model relates to an adjustable headphone relates to and relates to earphone technical field, its including wear the strip and set up in two sound production units on the strip are worn to the head, two sound production units set up respectively in wear the both ends of strip, wear the both ends of strip and all fixedly be provided with the sheath box, the sound production unit is fixed to be provided with the support, two the support with two sheath box one-to-one slides the cooperation, the sheath box is provided with and is used for with the support is fixed on the sheath box, so that the fixed subassembly that sets up on the strip of wearing of sound production unit. The utility model provides a relative position between sound generating unit and the head strip is adjusted to make the effect that the headset in this application can adapt to the user of different head types size.

Description

Adjustable headphone

Technical Field

The present application relates to the field of earphone technology, and in particular, to an adjustable headset.

Background

With the development and progress of information technology, various technological products are continuously entering into daily life of people, and in addition, the technological products gradually influence and change the life of people. Among them, headphones are widely used as an audio output device in the life of people, and have become a necessary device for various audio playback devices (e.g., electronic devices such as CD, MP3, MP4, or computer). The existing earphone mainly comprises two forms, namely a headset and an in-ear earphone, wherein the headset is favored by a plurality of consumers due to the advantages of comfort in wearing, good sound quality effect and the like.

In the related art, a headset with a published patent application number of CN201920084938.4 comprises a headset strip and two sounding units fixedly mounted on the headset strip, wherein the two sounding units are respectively positioned at two ends of the headset strip. When the two sound generating units are worn, the two sound generating units correspond to ears on two sides of a user respectively, so that a sound listening function is realized.

However, since both sound emitting units of the headset in the related art are fixedly mounted on the headset strip, the positions of both sound emitting units relative to the headset strip are fixed, so that the headset in the related art cannot be adapted to users with different head sizes.

Disclosure of Invention

In order to improve the phenomenon that the headset in the related art cannot be adapted to users of different head sizes, the present application provides an adjustable headset.

The application provides an adjustable headphone adopts following technical scheme:

the utility model provides an adjustable headphone, including wear the strip and set up in two sound production units on the strip are worn to the head, two sound production units set up respectively in wear the both ends of strip, wear the both ends of strip and all fixedly provided with sheath box, the sound production unit is fixed to be provided with the support, two the support with two sheath box one-to-one slides the cooperation, the sheath box is provided with and is used for with the support is fixed on the sheath box, so that the fixed subassembly that sets up on the strip is worn to the sound production unit.

Through adopting above-mentioned technical scheme, when using an adjustable headphone in this application, thereby the user can be according to the relative position between self head form size adjustment sound generating unit and the head strip to this makes the user that headphone can adapt to different head form sizes. When the relative position between the sounding unit and the head strip is adjusted, the bracket is directly pulled to slide. When the support slides to the suitable position, the fixed subassembly is fixed the support on the sheath box to make the sound generating unit fix on the head strip, so that use.

Therefore, the relative position between the sound generating unit and the headset strip on the headset is adjusted, so that the headset can be adapted to users with different head sizes.

Preferably, the fixing component comprises a fixing block fixedly arranged on the sheath box, a sliding groove formed in the fixing block, a sliding strip arranged in the sliding groove and a clamping block fixedly arranged on the sliding strip, wherein the bracket is provided with a plurality of clamping grooves along the extending direction of the bracket, the clamping block is matched with the clamping grooves in a clamping manner, and the fixing component is further arranged on the fixing block and used for pushing the sliding strip to slide towards the direction close to the bracket, so that the clamping block is clamped into an elastic piece in the clamping groove.

Through adopting above-mentioned technical scheme, the elastic component promotes the strip that slides towards the direction that is close to the support and slides to this will joint piece joint advances in the joint groove. The bracket is fixed on the sheath box by the clamping fit of the clamping block and the clamping groove.

Preferably, the elastic piece comprises a first spring arranged in the sliding groove, one end of the first spring is in butt fit with the bottom of the sliding groove, the other end of the first spring is in butt fit with one side of the sliding strip, which is away from the clamping block, and the clamping block is in a natural state when being in butt fit with the clamping groove.

By adopting the technical scheme, when the clamping block is matched with the clamping groove in a clamping way, the first spring is in a natural state. Therefore, the elastic force of the first spring drives the clamping block to be clamped into the clamping groove all the time.

Preferably, the sheath box is fixedly provided with two sheath accessories for guiding the support to slide, a sliding area for the support to pass through and slide is formed between the two sheath accessories in a matched mode, and the sheath accessories are provided with abutting components for abutting the support, so that the support stably slides in the sliding area.

Through adopting above-mentioned technical scheme, utilize the region of sliding that cooperates between two sheath accessories to form, the support slides in the region of sliding to this makes the support be difficult for shifting when cooperating with sheath box sliding.

Preferably, the abutting assembly comprises abutting blocks fixedly arranged on the sheath fittings, and the two abutting blocks on the sheath fittings are respectively in abutting fit with two opposite side walls of the bracket.

Through adopting above-mentioned technical scheme, the butt piece on two sheath accessories respectively with the lateral wall butt cooperation that deviates from mutually of support to this makes the support can steadily slide in the region of sliding.

Preferably, the abutting component comprises a mounting groove and an eccentric wheel, wherein the mounting groove is formed in the sheath fitting, the eccentric wheels are rotatably arranged in the mounting groove, the two eccentric wheels on the sheath fitting are respectively in abutting fit with two opposite side walls of the support, and a locking component for locking the eccentric wheels on the sheath fitting is further arranged in the sheath box.

Through adopting above-mentioned technical scheme, for making the headphone when adjusting the relative position between sound unit and the head strip many times, still can make the support steadily slide on the sheath box, improve the butt piece into the eccentric wheel. The wear occurs between the support and the eccentric wheel, so that when the gap between the eccentric wheel and the support is gradually increased, the eccentric wheel is rotated towards the direction close to the support, the gap between the eccentric wheel and the support is gradually reduced, the eccentric wheel and the support can be fully contacted, and then the support is stable when sliding on the sheath box, and the headset is good in use effect.

Preferably, the locking assembly comprises a fixed shaft arranged on the eccentric wheel, a first external thread arranged on the outer side wall of the fixed shaft and a nut in threaded fit with the first external thread, and the fixed shaft is not positioned in the center of the eccentric wheel;

the sheath accessory is provided with a first perforation, the first perforation is communicated with the mounting groove, one end of the fixed shaft, which is far away from the eccentric wheel, protrudes out of the sheath accessory through the first perforation, and the nut is positioned at one end of the fixed shaft, which protrudes out of the sheath accessory.

By adopting the technical scheme, the eccentric wheel can be rotated by rotating the fixed shaft, and the fixed shaft can be directly rotated when the eccentric wheel is required to be rotated. The eccentric wheel is locked on the sheath fitting by utilizing the threaded fit of the nut and the first external thread on the fixed shaft.

Preferably, the fixed shaft is detachably connected with the eccentric wheel, a fixed groove is formed in the eccentric wheel, the fixed groove is opposite to the first perforation, the fixed groove is not positioned in the center of the eccentric wheel, and the fixed shaft is in plug-in fit with the fixed groove;

the side wall of the fixed shaft is provided with a moving groove, a locking block used for locking the fixed shaft on the eccentric wheel is arranged in the moving groove in a sliding manner, the side wall of the fixed groove is provided with a locking groove used for the locking block to be inserted, so that the fixed shaft is fixedly connected with the eccentric wheel, the locking block is matched with the locking groove in an inserting manner, and a driving assembly used for driving the locking block to be inserted into the locking groove is further arranged on the fixed shaft.

By adopting the technical scheme, the driving assembly drives the locking block to be inserted into the locking groove, and the fixed shaft is locked on the eccentric wheel by utilizing the plug-in fit of the locking block and the locking groove.

Preferably, the driving assembly comprises a driving groove arranged in the fixing shaft, an internal thread arranged on the inner wall of the driving groove, a driving shaft rotationally arranged in the driving groove and a second external thread arranged on the outer side wall of the driving shaft, and the second external thread is in threaded fit with the internal thread;

the bottom of the movable groove is provided with a communication groove, the communication groove is communicated with a driving groove, a communication rod used for pushing the locking block out of the movable groove is arranged in the communication groove in a penetrating manner, so that the locking block is inserted into the locking groove, one end of the communication rod extends into the movable groove and is fixedly connected with the locking block, and the other end of the communication rod extends into the driving groove; when the driving shaft slides towards the direction close to the communication rod, the driving shaft is abutted with one end of the communication rod, which extends into the driving groove, and slides.

Through adopting above-mentioned technical scheme, rotate the drive shaft to when making the drive shaft slide towards the direction that is close to the communicating rod, the drive shaft stretches into the one end butt in the drive groove with the communicating rod and slides mutually, when making the drive shaft slide towards the direction that is close to the communicating rod, thereby can release the movable groove with the locking piece through pushing the communicating rod, so in the locking piece inserts into the locking groove of being convenient for.

Preferably, a second spring for pulling the locking block back into the moving groove is arranged in the moving groove, one end of the second spring is fixedly connected with the locking block, the other end of the second spring is fixedly connected with the bottom of the moving groove, and the second spring is in a natural state when the locking block is positioned in the moving groove.

Through adopting above-mentioned technical scheme, when the locking piece is located the removal inslot, the second spring is in natural state to this makes the drive shaft no longer release the locking piece through the communicating rod in the removal inslot, and the elasticity of second spring can be with the locking piece pull back to the removal inslot, so that dismantle the fixed axle from the eccentric wheel.

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

1. the relative position between the sound generating unit and the head strip can be adjusted by directly pulling the bracket to slide, so that the relative position between the sound generating unit and the head strip on the headset can be adjusted, and the headset can be adapted to users with different head types and sizes;

2. the elastic force of the first spring is utilized to drive the sliding strip to slide towards the direction close to the support, when the sliding strip slides towards the direction close to the support, the clamping block is clamped into the clamping groove, the support is fixed on the sheath box, and the sounding unit is fixed on the head-wearing strip so as to be convenient to use.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present application;

FIG. 2 is a schematic diagram of a sound unit according to an embodiment of the present application,Moving coil +.>A schematic diagram of the coordination relation between the moving coils;

FIG. 3 is a schematic view of an explosion structure according to a first embodiment of the present application;

FIG. 4 is another view of FIG. 3;

FIG. 5 is a schematic illustration of a mating relationship for embodying a headgear strap, a sheath accessory, and a slip region according to an embodiment of the present application;

FIG. 6 is an illustration of an abutment assembly in a second embodiment of the present application;

FIG. 7 is an illustration of a locking assembly in a second embodiment of the present application;

fig. 8 is a display diagram of a driving assembly in the second embodiment of the present application.

In the figure, 1, a head strip; 2. a sound generating unit; 3. a multi-moving coil structure cavity; 4.a moving coil; 5. and (2)> A moving coil; 6. a jacket case; 61. a jacket upper cover; 62. a sheath lower cover; 7. a bracket; 8. a relief groove; 9. a fixing assembly; 91. a fixed block; 92. a slip groove; 93. a slip bar; 94. a clamping block; 10. a clearance hole; 11. a clamping groove; 12. a receiving groove; 13. a first spring; 14. a limiting block; 15. a sheath fitting; 16. a slip zone; 17. an abutment block; 18. a mounting groove; 19. an eccentric wheel; 20. a locking assembly; 200. a fixed shaft; 201. a nut; 21. a fixing groove; 22. a moving groove; 23. a locking block; 24. a locking groove; 25. a drive assembly; 251. a driving groove; 252. a drive shaft; 26. a communication groove; 27. a communication rod; 28. and a second spring.

Detailed Description

The present application is described in further detail below with reference to fig. 1-8.

Embodiment one:

an adjustable headset, referring to fig. 1 and 2, comprises a headset 1 and two sounding units 2 arranged on the headset 1, wherein the two sounding units 2 are respectively arranged at two ends of the headset 1. In this embodiment, the sounding unit 2 is internally provided with a multi-moving-coil structural cavity 3, and one multi-moving-coil structural cavity 3 is internally provided withMoving coil 4 and two->Moving coil 5 for users to play gameThe sound distinguishes the position and controls the situation at any time.

Referring to fig. 2 and 3, the head strap 1 is provided with a sheath case 6 at both ends, and the sheath case 6 includes a sheath upper cover 61 and a sheath lower cover 62, the sheath upper cover 61 being disposed opposite to the sheath lower cover 62. The end of the head strap 1 extends into the space between the sheath upper cover 61 and the sheath lower cover 62, the head strap 1 and the sheath upper cover 61 are fixedly connected by bolts.

Referring to fig. 2 and 3, the sounding unit 2 is fixedly connected with a bracket 7, and the two brackets 7 are in one-to-one sliding fit with the two sheath boxes 6. Specifically, a side of the sheath upper cover 61, which is close to the head strip 1, is provided with a yielding groove 8 for the bracket 7 to penetrate and slide, and the yielding groove 8 penetrates through two opposite side walls of the sheath upper cover 61.

Referring to fig. 2 and 3, a fixing assembly 9 for fixing the bracket 7 to the case 6 is provided in the case 6 to fix the sound unit 2 to the head band 1. Specifically, the fixing assembly 9 includes a fixing block 91 fixedly connected to the lower sheath shell, a sliding groove 92 formed in one side, far away from the lower sheath shell, of the fixing block 91, a sliding strip 93 slidably connected to the sliding groove 92, and a clamping block 94 fixedly connected to one side, far away from the lower sheath shell, of the sliding strip 93, wherein the sliding strip 93 can slide in the sliding groove 92 in a direction close to the support 7.

Referring to fig. 3 and 4, the head-wearing strip 1 is provided with a avoidance hole 10 for giving way to the fixing block 91, the avoidance hole 10 penetrates through two opposite side walls of the head-wearing strip 1, and one end of the fixing block 91, which is far away from the lower shell of the sheath, extends into between the head-wearing strip 1 and the bracket 7 through the avoidance hole 10. The support 7 is provided with a plurality of clamping grooves 11 along the extending direction of the support 7, the clamping grooves 11 are arranged at equal intervals along the extending direction of the support 7, and the clamping blocks 94 are matched with the clamping grooves 11 in a clamping mode. In this embodiment, the corners of the clamping block 94 are all arc-shaped, so that the clamping block 94 is smoother when being clamped into the clamping groove 11.

Referring to fig. 3 and 4, the bottom of the sliding groove 92 is provided with a receiving groove 12, and a first spring 13 for pushing the sliding bar 93 to slide in a direction approaching to the bracket 7 is disposed in the receiving groove 12, so that the clamping block 94 is clamped into the clamping groove 11. One end of the first spring 13 is in abutting fit with the bottom of the accommodating groove 12, and the other end of the first spring 13 is in abutting fit with one side of the sliding strip 93, which is away from the clamping block 94. When the clamping block 94 is matched with the clamping groove 11 in a clamping way, the first spring 13 is in a natural state.

Referring to fig. 3 and 4, a limiting block 14 for limiting the abutting position of the first spring 13 is fixedly connected to one side of the sliding strip 93, which is away from the clamping block 94, and one end of the first spring 13, which is close to the sliding strip 93, is sleeved outside the limiting block 14. In this embodiment, two fixing assemblies 9 are disposed in each jacket box 6, and the two fixing assemblies 9 are symmetrically disposed in the jacket box 6.

Referring to fig. 4 and 5, two sheath fittings 15 for guiding the sliding of the bracket 7 are arranged between the head strip 1 and the sheath upper cover 61, a sliding region 16 for the bracket 7 to pass through and slide is formed between the two sheath fittings 15 in a matched manner, and the sliding region 16 is communicated with the yielding groove 8. In this embodiment, the sheath fitting 15 is fixedly connected with the sheath lower cover 62, the head strap 1, and the sheath upper cover 61 by bolts.

Referring to fig. 5, the sheath fitting 15 is provided with an abutment assembly for abutting the bracket 7, thereby enabling the bracket 7 to stably slide in the sliding region 16. Specifically, the abutting assembly comprises abutting blocks 17 fixedly connected to the sheath fittings 15, and the abutting blocks 17 on the two sheath fittings 15 are in abutting fit with two opposite side walls of the bracket 7 respectively. In this embodiment, the number of the abutting components on each sheath fitting 15 is multiple, and the multiple abutting components are arranged at intervals along the length direction of the sheath fitting 15.

The implementation principle of the embodiment of the application is as follows: when the headset is used, a user can adjust the relative position between the sound generating unit 2 and the headset strip 1 according to the head type size of the user, so that the headset can adapt to users with different head type sizes.

When the relative position between the sounding unit 2 and the head strip 1 is adjusted, the bracket 7 is directly pulled to slide. When the support 7 is pulled to slide, the support 7 pushes the clamping block 94 to slide in a direction away from the support 7, and at the moment, the first spring 13 is in a compressed state. When the bracket 7 slides to a proper position, the first spring 13 pushes the sliding strip 93 to slide towards the direction close to the bracket 7, so that the clamping blocks 94 are clamped into the corresponding clamping grooves 11. When the clamping blocks 94 are clamped into the corresponding clamping grooves 11, the clamping blocks 94 fix the support 7 on the sheath box 6, so that the sounding unit 2 is fixed on the head-wearing strip 1, and the head-wearing strip is convenient to use.

It can be seen that the relative position between the sound generating unit 2 and the headset 1 on the headset of the present application is adjusted to enable the headset of the present application to be adapted to users of different head sizes.

Embodiment two: the second embodiment is different from the first embodiment in that the abutment assembly is different.

Specifically, referring to fig. 6, the abutment assembly includes a mounting groove 18 formed on a side of the sheath fitting 15 facing the bracket 7, and an eccentric wheel 19 rotatably disposed in the mounting groove 18, and the eccentric wheels 19 on the two sheath fittings 15 are respectively in abutment fit with two opposite side walls of the bracket 7.

Referring to fig. 7, the sheath fitting 15 is further provided with a locking assembly 20 for locking the eccentric 19 to the sheath fitting 15, and in particular, the locking assembly 20 includes a fixed shaft 200 provided to the eccentric 19, a first external thread provided to an outer sidewall of the fixed shaft 200, and a nut 201 screw-fitted to the first external thread, the fixed shaft 200 not being at the center of the eccentric 19.

Referring to fig. 6 and 7, the sheath fitting 15 is provided with a first through hole, and the first through hole is communicated with the mounting groove 18. The head strip 1 is provided with a second perforation which is opposite to the first perforation. One end of the fixed shaft 200, which is far away from the eccentric wheel 19, sequentially penetrates through the first perforation and the second perforation until protruding out of the head strip 1. The nut 201 is located at one end of the fixing shaft 200 protruding out of the head-wearing strip 1, and the nut 201 and the sheath fitting 15 are respectively abutted against two opposite side walls of the head-wearing strip 1. The eccentric 19 is locked to the sheath fitting 15 by means of a threaded engagement of the nut 201 with the first external thread on the stationary shaft 200.

Referring to fig. 6 and 8, in the present embodiment, the fixed shaft 200 is detachably connected to the eccentric 19 for easy assembly. Specifically, the eccentric wheel 19 is provided with a fixing groove 21, the fixing groove 21 is opposite to the first through hole, the fixing groove 21 is not positioned at the center of the eccentric wheel 19, and the fixing shaft 200 is in plug-in fit with the fixing groove 21.

Referring to fig. 8, a moving groove 22 is formed in a sidewall of the fixed shaft 200 near one end of the eccentric wheel 19, the moving groove 22 is formed in a radial direction of the fixed shaft 200, and a locking block 23 for locking the fixed shaft 200 to the eccentric wheel 19 is slidably coupled to the moving groove 22. The groove wall of the fixed groove 21 is provided with a locking groove 24 for inserting a locking block 23, so that the fixed shaft 200 is connected and fixed with the eccentric wheel 19, and the locking block is in plug-in fit with the locking groove 24.

Referring to fig. 8, the fixed shaft 200 is further provided with a driving assembly 25 for driving the locking block 23 to be inserted into the locking groove 24, and specifically, the driving assembly 25 includes a driving groove 251 formed in the fixed shaft 200, an internal thread formed in an inner wall of the driving groove 251, a driving shaft 252 rotatably formed in the driving groove 251, and a second external thread formed in an outer sidewall of the driving shaft 252. The driving groove 251 is opened along the length direction of the fixing shaft 200, and the second external screw thread is screw-engaged with the internal screw thread.

Referring to fig. 8, a communication groove 26 is formed at the bottom of the moving groove 22, and the communication groove 26 communicates with a driving groove 251. A communication rod 27 for pushing the lock block 23 out of the moving groove 22 so that the lock block 23 is inserted into the lock groove 24 is penetrated in the communication groove 26. One end of the communication rod 27 extends into the moving groove 22 and is fixedly connected with the locking block 23, and the other end of the communication rod 27 extends into the driving groove 251.

Referring to fig. 8, the driving shaft 252 is rotated such that when the driving shaft 252 slides in a direction approaching the communication rod 27, the driving shaft 252 abuts against and slides against an end of the communication rod 27 extending into the driving groove 251, so that when the driving shaft 252 slides in a direction approaching the communication rod 27, the locking piece 23 can be pushed out of the moving groove 22 by pushing the communication rod 27, thereby facilitating insertion of the locking piece 23 into the locking groove 24.

Referring to fig. 8, in order to make the sliding of the driving shaft 252 pushing the communication rod 27 smoother, in this embodiment, both the end of the communication rod 27 near the driving shaft 252 and the end of the driving shaft 252 near the communication rod 27 are provided in a truncated cone shape. In addition, in this embodiment, two locking blocks 23 are provided, the two locking blocks 23 are respectively located at two ends of the cross-sectional diameter of the driving shaft 252, and the two locking blocks 23 are disposed on the driving shaft 252 in a consistent structure, which is not described herein.

Referring to fig. 8, a second spring 28 for pulling the locking piece 23 back into the moving groove 22 is provided in the moving groove 22, one end of the second spring 28 is fixedly connected with the locking piece 23, and the other end of the second spring 28 is fixedly connected with the bottom of the moving groove 22. The second spring 28 is in a natural state when the locking block 23 is positioned in the moving groove 22.

The implementation principle of the embodiment of the application is as follows: when the headphone in the present application is used, the adjustment manner is the same as that of the first embodiment. In this embodiment, in order to enable the headset to stably slide the stand 7 on the jacket box 6 when the relative position between the sound generating unit 2 and the headset strip 1 is adjusted multiple times, the abutting block 17 is modified to be an eccentric 19.

When the abrasion occurs between the support 7 and the eccentric wheel 19, so that the gap between the eccentric wheel 19 and the support 7 is gradually increased, the drive shaft 252 drives the eccentric wheel 19 to rotate towards the direction close to the support 7 by rotating the drive shaft 252, so that the gap between the eccentric wheel 19 and the support 7 is gradually reduced, the eccentric wheel 19 and the support 7 can be fully contacted, the support 7 is stable when sliding on the sheath box 6, and the headset is good in use effect.

The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (7)

1. The utility model provides an adjustable headphone, includes wear strip (1) and set up in two sound production units (2) on wear strip (1), two sound production units (2) set up respectively in wear strip (1) both ends, characterized in that, wear strip (1) both ends all are fixed to be provided with sheath box (6), sound production unit (2) are fixed to be provided with support (7), two support (7) and two sheath box (6) one-to-one slip cooperation, sheath box (6) are provided with and are used for with support (7) are fixed on sheath box (6), so that sound production unit (2) are fixed to be set up fixed subassembly (9) on wear strip (1);

the sheath box (6) is fixedly provided with two sheath accessories (15) for guiding the support (7) to slide, a sliding area (16) for the support (7) to pass through and slide is formed between the two sheath accessories (15), and the sheath accessories (15) are provided with an abutting component for abutting the support (7) so that the support (7) stably slides in the sliding area (16);

the abutting assembly comprises abutting blocks (17) fixedly arranged on the sheath fittings (15), and the abutting blocks (17) on the two sheath fittings (15) are respectively in abutting fit with two opposite side walls of the bracket (7);

or the butt subassembly include set up in mounting groove (18) and rotation set up in mounting groove (18) eccentric wheel (19), two eccentric wheel (19) on sheath accessory (15) respectively with the lateral wall butt cooperation that two looks that deviate from of support (7), still be provided with in sheath box (6) be used for with eccentric wheel (19) lock locking subassembly (20) on sheath accessory (15).

2. The headset of claim 1, wherein the fixing component (9) comprises a fixing block (91) fixedly arranged on the jacket box (6), a sliding groove (92) formed in the fixing block (91), a sliding bar (93) arranged in the sliding groove (92) in a sliding manner, and a clamping block (94) fixedly arranged on the sliding bar (93), the bracket (7) is provided with a plurality of clamping grooves (11) along the extending direction of the bracket, the clamping block (94) is matched with the clamping grooves (11) in a clamping manner, and the fixing component (9) further comprises an elastic piece arranged on the fixing block (91) and used for pushing the sliding bar (93) to slide in a direction close to the bracket (7) so as to enable the clamping block (94) to be clamped into the clamping grooves (11).

3. The adjustable headset of claim 2, wherein the elastic member comprises a first spring (13) disposed in the sliding groove (92), one end of the first spring (13) is in abutting engagement with a groove bottom of the sliding groove (92), the other end of the first spring (13) is in abutting engagement with one side of the sliding strip (93) away from the clamping block (94), and the clamping block (94) is in a natural state when being in clamping engagement with the clamping groove (11).

4. An adjustable headphone according to claim 1, characterized in that the locking assembly (20) comprises a fixed shaft (200) provided on the eccentric (19), a first external thread provided on the outer side wall of the fixed shaft (200) and a nut (201) threaded to the first external thread, the fixed shaft (200) not being in the centre of the eccentric (19);

the sheath accessory (15) is provided with a first perforation, the first perforation is communicated with the mounting groove (18), one end of the fixed shaft (200) far away from the eccentric wheel (19) protrudes out of the sheath accessory (15) through the first perforation, and the nut (201) is positioned at one end of the fixed shaft (200) protruding out of the sheath accessory (15).

5. The adjustable headset of claim 4, wherein the fixed shaft (200) is detachably connected with the eccentric wheel (19), a fixed groove (21) is formed in the eccentric wheel (19), the fixed groove (21) is opposite to the first through hole, the fixed groove (21) is not located at the center of the eccentric wheel (19), and the fixed shaft (200) is in plug-in fit with the fixed groove (21);

the utility model discloses a fixed axle, including fixed axle (200), fixed axle (200) and fixed axle, removal groove (22) have been seted up to the lateral wall of fixed axle (200), remove the inslot (22) and slide and be provided with be used for with fixed axle (200) lock locking piece (23) on eccentric wheel (19), the lateral wall of fixed slot (21) has been seted up and is used for supplying locking piece (23) are inserted, so make fixed axle (200) with eccentric wheel (19) are connected fixed locking groove (24), locking piece (23) with locking groove (24) grafting cooperation, still be provided with on fixed axle (200) and be used for the drive locking piece (23) are inserted drive assembly (25) in locking groove (24).

6. The adjustable headset of claim 5, wherein the drive assembly (25) comprises a drive slot (251) opening into the stationary shaft (200), an internal thread provided on an inner wall of the drive slot (251), a drive shaft (252) rotatably provided on the drive slot (251), and a second external thread provided on an outer side wall of the drive shaft (252), the second external thread being threadedly engaged with the internal thread;

a communication groove (26) is formed in the groove bottom of the movable groove (22), the communication groove (26) is communicated with a driving groove (251), a communication rod (27) used for pushing the locking block (23) out of the movable groove (22) is arranged in the communication groove (26) in a penetrating manner, so that the locking block (23) is inserted into the locking groove (24), one end of the communication rod (27) stretches into the movable groove (22) and is fixedly connected with the locking block (23), and the other end of the communication rod (27) stretches into the driving groove (251);

when the driving shaft (252) slides towards the direction approaching the communication rod (27), the driving shaft (252) is abutted with one end of the communication rod (27) extending into the driving groove (251) and slides.

7. The adjustable headset of claim 5, wherein a second spring (28) for pulling the locking block (23) back into the moving slot (22) is disposed in the moving slot (22), one end of the second spring (28) is fixedly connected with the locking block (23), the other end of the second spring (28) is fixedly connected with the bottom of the moving slot (22), and the second spring (28) is in a natural state when the locking block (23) is located in the moving slot (22).