CN218103447U - Head-wearing earphone - Google Patents

Abstract

The application relates to the technical field of earphones, and discloses a headset. This headphone's first slide arm is connected with gear drive through first rack and gear drive transmission, and the second slide arm is connected with gear drive transmission through the second rack for arbitrary any one in first slide arm and the second slide arm slides and can drive another person and synchronous in opposite directions or carry on the back mutually, can guarantee that the amount of stretching out of first slide arm and the amount of stretching out of second slide arm keep unanimous at any moment, is favorable to alleviateing user's use burden. And the first rack and the second rack are positioned on the same side of the gear transmission mechanism, so that the bending amount of the first rack and the bending amount of the second rack are kept consistent, the meshing condition of the first rack and the second rack with the gear transmission mechanism is stable, and the motion stability of the first sliding arm and the second sliding arm is guaranteed.

Description

Head-wearing earphone

Technical Field

The present application relates to the field of headset technology, and in particular, to a headset.

Background

Headphones typically connect a head mount and earmuffs via a sliding arm that slides relative to the head mount so that the earmuffs can extend or retract relative to the head mount. Furthermore, a headphone typically has left and right ear cups, which are connected to the head mount via left and right sliding arms.

However, the left and right sliding arms of the current headset cannot slide synchronously, and usually the user needs to manually adjust the extension amounts of the left and right sliding arms to be consistent before wearing the headset, which undoubtedly increases the use burden of the user and causes poor use experience of the user.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application provides a headset capable of sliding a first sliding arm and a second sliding arm synchronously.

In order to solve the technical problem, the application adopts a technical scheme that: a headset is provided. The headset includes a headset mount device, a first earmuff device, and a second earmuff device. The head-mounted support device comprises a head-mounted fixed support, the head-mounted fixed support surrounds to form a wearing area, and the head of a user is located in the wearing area when the user wears the headset. Wear the support device and still include first slide arm and second slide arm, first slide arm is connected first ear muff device and is located the one side of wearing the district, and the second slide arm is connected second ear muff device and is located the opposite side of wearing the district, and first slide arm and second slide arm all locate head-mounted fixed bolster slidably. The head-mounted support device further comprises a first rack, a second rack and a gear transmission mechanism, the first rack is connected with the first sliding arm, the second rack is connected with the second sliding arm, the first rack and the second rack are further in transmission connection with the gear transmission mechanism respectively, and any one of the first sliding arm and the second sliding arm can drive the other one to slide synchronously in the opposite direction or in the opposite direction. The first rack and the second rack are positioned on the same side of the gear transmission mechanism.

In an embodiment of the application, the first and second gear racks are located on a side of the gear transmission facing away from the wearing area.

In an embodiment of the present application, the first and second racks are proximate the wear area relative to the first and second sliding arms.

In one embodiment of the present application, the gear transmission mechanism includes a first gear assembly and a second gear assembly drivingly connected to each other; the gear of the first gear assembly is engaged with the first rack and the gear of the second gear assembly is engaged with the second rack, wherein the gear of the first gear assembly is rotated in a direction opposite to the gear of the second gear assembly as either of the first and second slide arms slides.

In an embodiment of the present application, the gear transmission further comprises a main bevel gear; the first gear assembly comprises a first auxiliary bevel gear and a first straight gear, and the first auxiliary bevel gear and the first straight gear are coaxially arranged and can synchronously rotate; the second gear assembly comprises a second auxiliary bevel gear and a second straight gear, and the second auxiliary bevel gear and the second straight gear are coaxially arranged and can synchronously rotate; the first auxiliary bevel gear and the second auxiliary bevel gear are respectively positioned at two sides of the main bevel gear and are both meshed with the main bevel gear.

In an embodiment of the present application, the gear transmission further comprises a gear shaft; the first auxiliary bevel gear and the first straight gear are sleeved on the gear shaft and can rotate relative to the gear shaft; the second auxiliary bevel gear and the second straight gear are sleeved on the gear shaft and can rotate relative to the gear shaft.

In an embodiment of the present application, the first and second racks are spaced apart from each other in a first direction; wherein the first direction is perpendicular to a plane through the wearing area.

In an embodiment of the present application, the head-mounted fixing bracket is provided with a first limiting groove group and a second limiting groove group; the first limiting groove group and the second limiting groove group respectively comprise at least two limiting grooves which are sequentially distributed along the direction surrounding the wearing area; the head-mounted support device further comprises a first elastic sheet and a second elastic sheet, the first elastic sheet is connected with the first sliding arm, the second elastic sheet is connected with the second sliding arm, the first elastic sheet can be selectively embedded into different limiting grooves of the first limiting groove group to fix the relative position between the first sliding arm and the head-mounted fixed support, and the second elastic sheet can be selectively embedded into different limiting grooves of the second limiting groove group to fix the relative position between the second sliding arm and the head-mounted fixed support.

In an embodiment of the present application, a first abutting portion is disposed at a position of the first sliding arm adjacent to the first elastic sheet; a second abutting part is arranged at the position, adjacent to the second elastic sheet, of the second sliding arm; the head-mounted bracket device also comprises a first roller bracket corresponding to the first abutting part and a second roller bracket corresponding to the second abutting part, so that the first sliding arm is limited to be separated from the head-mounted fixed bracket when the first abutting part abuts against the first roller bracket, and the second sliding arm is limited to be separated from the head-mounted fixed bracket when the second abutting part abuts against the second roller bracket.

In an embodiment of the present application, the head-mounted fixing bracket is provided with a sliding groove; the first sliding arm, the second sliding arm, the first rack and the second rack are slidably arranged in the sliding groove.

The beneficial effect of this application is: in contrast to the prior art, the present application provides a headset. The head-wearing support device of the head-wearing earphone comprises a first rack, a second rack and a gear transmission mechanism. The first sliding arm is in transmission connection with the gear transmission mechanism through the first rack, and the second sliding arm is in transmission connection with the gear transmission mechanism through the second rack, so that any one of the first sliding arm and the second sliding arm can drive the other one to synchronously slide in the opposite direction or in the opposite direction, namely the first sliding arm and the second sliding arm synchronously slide, the extension amount of the first sliding arm and the extension amount of the second sliding arm can be kept consistent at any moment, and the use burden of a user can be favorably reduced.

Also, the first and second racks are generally curved in the headgear mounting bracket. The first rack and the second rack are located on the same side of the gear transmission mechanism, so that the bending amount of the first rack and the bending amount of the second rack are kept consistent, the meshing condition of the first rack and the second rack with the gear transmission mechanism is stable, and the stability of the movement of the first sliding arm and the second sliding arm is guaranteed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. Moreover, the drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Fig. 1 is a schematic structural diagram of an embodiment of a headset according to the present application;

fig. 2 is a schematic view of a first part of the headset of fig. 1;

FIGS. 3a-3d are schematic views of the headset of FIG. 1 illustrating steps in the process of folding and stowing;

fig. 4 is an exploded view of a portion of the headset of fig. 2;

fig. 5 is a schematic sectional view of an area a of the headset shown in fig. 1;

FIG. 6 is a schematic structural view of an embodiment of the first rotating member and the sliding arm of the present application;

fig. 7 is a schematic cross-sectional view of the headphone of fig. 1 in the area B;

FIG. 8 is a schematic structural view of an embodiment of a second rotatable member of the present application;

fig. 9 is a schematic cross-sectional view of the headphone of fig. 1 in the area C;

fig. 10 is a schematic view of the headset of fig. 9 on a side facing the wearing area;

fig. 11 is a schematic view of the headset of fig. 9 on a side facing away from the wearing area;

fig. 12 is a schematic view of a second part of the headset of fig. 1;

fig. 13 is an exploded view of a portion of the headset of fig. 12;

14a-14b are schematic cross-sectional views of a third portion of the headset of FIG. 1;

fig. 15 is a schematic view of a fourth portion of the headset of fig. 1;

fig. 16 is an exploded view of a portion of the headset of fig. 15;

fig. 17a-17b are schematic cross-sectional views of a fifth portion of the headset of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are some but not all of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a headset according to an embodiment of the present application.

In an embodiment, the headset comprises a headset device 10 and an earmuff device 20. The head mount device 10 is connected to an earmuff device 20. The head mount device 10 encloses a wearing zone 11, the head of the user being located in the wearing zone 11 when the user wears the headset, and the earmuff devices 20 being located at the ears of the user, audio information transmitted by the headset being output to the user through the earmuff devices 20.

Further, the head mount apparatus 10 includes a head mount fixing bracket 12 and a sliding arm 13. The head mount bracket 12 surrounds the wearing region 11. The sliding arm 13 is slidably disposed on the head-mounted fixing bracket 12, and the sliding arm 13 is further connected to the earmuff device 20. The sliding arm 13 slides with respect to the head mount bracket 12 so that the sliding arm 13 extends or retracts with respect to the head mount bracket 12 to adjust the position of the earmuff device 20 so that the earmuff device 20 is positioned at the user's ear after the user wears the headset.

The present embodiment describes the extent to which the slide arm 13 protrudes with respect to the headgear fixing bracket 12 by the amount of protrusion. It is understood that when the slide arm 13 is extended with respect to the headgear fixing bracket 12, the amount of extension of the slide arm 13 is increased; and when the slide arm 13 is retracted with respect to the headgear fixing bracket 12, the amount of protrusion of the slide arm 13 is reduced.

In an embodiment, the headset is typically provided with two ear cup devices 20, a first ear cup device 21 and a second ear cup device 22. A first ear cup device 21 is located on one side of the headset device 10 and a second ear cup device 22 is located on the other side of the headset device 10. One of the first and second ear cup devices 21, 22 corresponds to the left ear of the user and the other one corresponds to the right ear of the user.

Correspondingly, the head mount device 10 includes a first sliding arm 131 and a second sliding arm 132. The first slide arm 131 is connected to the first ear cup device 21 and the second slide arm 132 is connected to the second ear cup device 22.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a first part of the headphone shown in fig. 1. Wherein fig. 2 shows a turning mechanism 30 corresponding to the second ear muff device 22 of the headset of fig. 1.

In one embodiment, the headset is provided with a fold-in function. In particular, the headset further comprises a rotation mechanism 30. The earmuff device 20 is rotatably connected with the head mount device 10 through a rotating mechanism 30, specifically, rotatably connected with the sliding arm 13, so as to realize the folding and accommodating functions of the headset.

It will be appreciated that the first ear-muff device 21 and the second ear-muff device 22 are each pivotally connected to the head-mount device 10 by a different pivoting mechanism 30. In other words, the first ear-cup device 21 is pivotally connected to the first slide arm 131 via one set of pivoting means 30, and the second ear-cup device 22 is pivotally connected to the second slide arm 132 via another set of pivoting means 30, the two sets of pivoting means 30 being of identical construction. The following description will be given by way of example of one set of the rotating mechanism 30, which is only for discussion purposes and is not intended to be limiting.

In one embodiment, the rotating mechanism 30 includes a first rotating assembly 31 and a second rotating assembly 32. The first rotating assembly 31 is rotatably connected to the head mount device 10 and is capable of rotating around a first axis X1, and the second rotating assembly 32 is rotatably connected to the first rotating assembly 31 and is capable of rotating around a second axis X2.

Wherein the first axis X1 is perpendicular to the second axis X2. The first axis X1 is parallel to a plane through the wearing region 11 (as indicated by plane α in fig. 1, the same applies below) and also to the opposite direction of the first earmuff device 21 and the second earmuff device 22. In the initial state of the headset before it is folded in storage, the second axis X2 is perpendicular to the plane passing through the wearing area 11 and to the relative direction of the first earmuff device 21 and the second earmuff device 22.

In this way, after the first rotating assembly 31 rotates relative to the headset device 10, the second rotating assembly 32 rotates relative to the first rotating assembly 31, and the earmuff device 20 connected with the second rotating assembly 32 can be folded and stored, so that the volume of the headset of the present embodiment is small after being folded, and the volume of the headset after being folded can be reduced.

The following exemplarily explains the folding and storing process of the headphone of the present embodiment.

First, the first rotating member 31 of the rotating mechanism 30 to which the first earmuff device 21 is connected is rotated such that the first earmuff device 21 is rotated by a certain angle (e.g. 90, etc.), as shown in fig. 3 a; then the first rotating member 31 of the rotating mechanism 30 connected to the second earmuff device 22 is rotated to rotate the second earmuff device 22 in the opposite direction by a certain angle (e.g., 90 °, etc.), as shown in fig. 3 b; thereafter rotating the second rotating assembly 32 of the rotating mechanism 30 to which the first earmuff device 21 is connected, such that the first earmuff device 21 is rotated a certain angle (which may be 50, for example) towards the wearing area 11, as shown in fig. 3 c; finally, the second rotating assembly 32 of the rotating mechanism 30 connected to the second earmuff device 22 is rotated to rotate the second earmuff device 22 towards the wearing area 11 by a certain angle (for example, 50 degrees, etc.), and finally the first earmuff device 21 and the second earmuff device 22 are connected to each other to complete the folding and storing process of the headset, as shown in fig. 3 d.

In an embodiment, the first rotating component 31 and the second rotating component 32 are both located on a side of the headset mount device 10 facing the wearing area 11, that is, the rotating mechanism 30 of the headset of the present embodiment is designed on an inner side of the headset mount device 10, and the rotating mechanism 30 does not significantly affect an appearance of a product presented outside the headset of the present embodiment, which can improve the appearance of the product of the headset.

Referring to fig. 1, 2, 4 and 5, fig. 4 is a schematic diagram of an exploded structure of a part of the headset shown in fig. 2, and fig. 5 is a schematic diagram of a cross-sectional structure of a region a of the headset shown in fig. 1.

In an embodiment, the first rotating assembly 31 includes a first rotating member 311, and the first rotating member 311 is rotatably connected to the second rotating assembly 32. One of the first rotating member 311 and the head mount apparatus 10 is provided with a first rotating shaft 331, and the other is provided with a rotating hole 332, and the first rotating shaft 331 is rotatably fitted in the rotating hole 332. The second rotating assembly 32 is shown in detail in fig. 4 and 5 and described below.

The first rotating shaft 331 extends along the first axis X1, so that the first rotating member 311 can rotate around the first axis X1. The central axis of the first rotating member 311 coincides with the first axis X1, and the rotation of the first rotating member 311 about the first axis X1 is specifically realized by the first rotating member 311 rotating about its own central axis.

Fig. 4 and 5 illustrate the head-mounted support device 10 having the first rotating shaft 331 and the first rotating member 311 having the rotating hole 332, which are only necessary for discussion and not intended to be limiting. Specifically, the first rotating shaft 331 is provided on the sliding arm 13.

Further, referring to fig. 6, the head-mounted support device 10 has at least two fixing portions 133, the at least two fixing portions 133 are sequentially spaced along the circumferential direction of the first axis X1, and a guide groove 134 is formed between adjacent fixing portions 133. Fig. 6 shows the head-mounted support device 10 having two fixing portions 133, and two guide grooves 134 are formed on two sides of the two fixing portions 133, which are only for discussion and are not limited thereto.

A rotating portion 312 is protruded from the outer peripheral surface of the first rotating member 311. The first rotating assembly 31 further includes a fixing member 313, the fixing member 313 press-fits the rotating portion 312 into the guide groove 134, and the rotating portion 312 can move along the guide groove 134 with the rotation of the first rotating member 311, and restricts the first rotating member 311 from further rotating when the rotating portion 312 abuts against the fixing portion 133.

For example, corresponding to the case that the head-mounted support device 10 shown in fig. 6 is provided with two guide grooves 134, the outer peripheral surface of the first rotating member 311 of the present embodiment is provided with two rotating portions 312, one of the rotating portions 312 is provided in one of the guide grooves 134, and the other rotating portion 312 is provided in the other guide groove 134.

In this embodiment, the rotating portion 312 is pressed into the guide groove 134 by the fixing member 313, so that the first rotating member 311 can be fixed to the head-mounted support device 10, and the first rotating member 311 is prevented from being separated from the head-mounted support device 10. Moreover, the maximum rotation angle of the first rotating member 311 is limited by the cooperation of the rotating part 312 and the fixing part 133, so that the controllability of the rotating mechanism 30 is stronger, which is beneficial to reducing the use burden of the user. The maximum rotation angle of the first rotating member 311 is shown by an angle θ 1 in fig. 6.

Alternatively, the fixing member 313 and the fixing portion 133 may be fixedly connected by a fastener such as a screw, a bolt, and the like, which is not limited herein.

Further, the first rotating assembly 31 further includes a first damping member 314. The first damping member 314 is interposed between the first rotating member 311 and the head mount device 10 to block the relative rotation between the first rotating member 311 and the head mount device 10. The first damping member 314 may be an elastic structure, the first damping member 314 interposed between the first rotating member 311 and the head mount device 10 is in a compressed state, and an elastic restoring force provided by the first damping member 314 is converted into a friction force with the first rotating member 311 and the head mount device 10 to hinder the relative rotation between the first rotating member 311 and the head mount device 10.

Since the damping force provided by the first damping member 314 is smaller, the user can drive the first rotating member 311 to rotate by slightly increasing the acting force. The first damping member 314 can provide a damping feeling during the process of the user driving the first rotating member 311 to rotate, which is also beneficial to improving the controllability of the rotating mechanism 30.

Optionally, the first damping member 314 extends around the first axis X1 and is sleeved on the outer circumference of the first rotating shaft 331.

Further, the first rotating assembly 31 further includes an adaptor 315, and the first rotating member 311 is connected to the second rotating assembly 32 through the adaptor 315. One of the first rotating member 311 and the adaptor 315 is provided with a fixing groove 3161, the other one of the first rotating member 311 and the adaptor 315 is provided with a fixing protrusion 3162, and the fixing protrusion 3162 is embedded in the fixing groove 3161 to limit the relative rotation between the first rotating member 311 and the adaptor 315, so that the rotation of the first rotating member 311 can synchronously drive the adaptor 315 and the second rotating assembly 32 connected thereto to rotate around the first axis X1.

Fig. 4 shows the first rotating member 311 having the fixing groove 3161 and the adaptor 315 having the fixing protrusion 3162, for example only, but not by way of limitation.

Further, one of the first rotating member 311 and the adapter 315 is provided with a locking groove 3171 extending around the first axis X1, and the other is provided with a locking block 3172. The latch 3172 is embedded in the latch groove 3171 to limit the separation of the adaptor 315 from the first rotating member 311.

Fig. 4 and 5 illustrate a case where the first rotating member 311 is provided with a latch 3172, the adaptor 315 is provided with a latch 3171, and the fixing groove 3161 on the first rotating member 311 is located on the latch 3172, which is merely by way of example and is not limited thereto.

In one embodiment, the second rotating assembly 32 includes a ball axle body 321 and a second rotating axle 322. The ball body 321 includes a ball portion 323 and a shaft portion 324 connected. The ball portion 323 is shaped like a sphere and the shaft portion 324 is shaped like a rod. The spherical portion 323 is rotatably disposed on the first rotating assembly 31 through the second rotating shaft 322, and specifically, the spherical portion 323 is disposed in the adaptor 315 through the second rotating shaft 322. The shaft portion 324 is connected to the earmuff device 20.

Wherein the second rotation axis 322 extends along the second axis X2. In other words, the central axis of the second rotating shaft 322 coincides with the second axis X2, and the spherical body 323 rotates around the second rotating shaft 322, so that the spherical body 321 rotates around the second axis X2, and the earmuff device 20 is further rotated.

Further, the first rotation assembly 31 comprises an adapter 315. The adaptor 315 is provided with a receiving cavity 3151. The sphere portion 323 is disposed in the accommodating cavity 3151 and is in interference fit with the accommodating cavity 3151. The ball portion 323 is in interference fit with the receiving cavity 3151, and can prevent relative rotation between the ball portion 323 and the adaptor 315.

By reasonably setting the interference fit degree between the spherical part 323 and the accommodating cavity 3151, the frictional resistance between the spherical part 323 and the adaptor 315 is not too large, and the user can drive the spherical part 323 to rotate by slightly increasing the acting force. Therefore, the spherical portion 323 and the accommodating cavity 3151 are in interference fit, so that a damping hand feeling can be provided in the process that a user drives the spherical portion 323 to rotate, and the controllability of the rotating mechanism 30 can be improved.

Still further, the adaptor 315 includes a fastening housing 3152, a first sub-portion 3153, and a second sub-portion 3154. The first sub portion 3153 and the second sub portion 3154 are abutted to form an accommodating cavity 3151, and the fastening housing 3152 is wrapped around the first sub portion 3153 and the second sub portion 3154. The present embodiment improves the bonding strength between the first sub portion 3153 and the second sub portion 3154 by fastening the housing 3152, so as to ensure the interference fit between the spherical portion 323 and the first sub portion 3153 and the second sub portion 3154, i.e., ensure the interference fit between the spherical portion 323 and the accommodating cavity 3151.

Moreover, the fastening housing 3152 may be made of a metal material, so that the fastening housing 3152 has sufficient fastening force, which is beneficial to ensure the tight fit between the first sub-portion 3153 and the second sub-portion 3154, and the fastening housing 3152 may also have a metal appearance, which is beneficial to improve the appearance of the headset of this embodiment.

Further, the outer peripheral surface of the spherical portion 323 is provided with a first rotation groove 325 extending around the second axis X2. The first rotating member 311 of the first rotating assembly 31 is provided with a first rotating protrusion 318. The first rotation projection 318 is fitted in the first rotation groove 325.

The first rotating protrusion 318 can move in the first rotating groove 325 with the rotation of the ball part 323. When the first rotating projection 318 abuts against the head and tail ends of the first rotating groove 325 (both ends of the first rotating groove 325 in the circumferential direction of the second axis X2), the first rotating projection 318 and the first rotating groove 325 cooperate to limit the maximum rotation angle of the spherical portion 323, so that the controllability of the rotating mechanism 30 is stronger, which is beneficial to reducing the burden of the user. The maximum rotation angle of the spherical portion 323 is shown as an angle θ 2 in fig. 5.

Referring to fig. 7, fig. 7 is a schematic cross-sectional view of the headphone B area shown in fig. 1.

In one embodiment, the earmuff device 20 comprises an earmuff body 23, a second rotating member 24 and an elastic member 25. The earmuff body 23 is used to output audio information to the user. The second rotating member 24 is rotatably connected to the ear cup body 23 and is rotatable about the third axis X3. Wherein the third axis X3 is parallel to the second axis X2.

The shaft portion 324 is disposed through the second rotating member 24, and the shaft portion 324 and the cap body 23 are connected by an elastic member 25, and the elastic member 25 is used to make the cap body 23 have a tendency to rotate toward the wearing area 11 relative to the shaft portion 324. In this way, when the user wears the headphone of the present embodiment, the earmuff main body 23 has a tendency to rotate toward the wearing area 11, so that the earmuff main body 23 is tightly attached to the ear of the user, which is beneficial to reducing audio leakage and further beneficial to improving listening experience of the user.

Further, the resilient member 25 can be away from the ball portion 323 relative to the second rotating member 24, and the resilient member 25 is located on the side of the shaft portion 324 facing the wearing area 11, as shown in fig. 7. When the user wears the headphone of the present embodiment, the spherical portion 323 rotates about the second axis X2 relative to the cap body 23 in a direction away from the wearing region 11, so that the shaft portion 324 presses the elastic member 25, and the elastic restoring force provided by the elastic member 25 causes the cap body 23 to have a tendency to rotate toward the wearing region 11.

Of course, in other embodiments of the present application, the elastic member 25 may be located on the side of the shaft portion 324 facing away from the wearing area 11. When the user wears the headphone of the present embodiment, the spherical portion 323 rotates relative to the cap body 23 about the second axis X2 in a direction away from the wearing region 11, so that the shaft portion 324 stretches the elastic member 25, and the elastic restoring force provided by the elastic member 25 can also make the cap body 23 have a tendency to rotate toward the wearing region 11. Even though the elastic member 25 can be close to the spherical portion 323 relative to the second rotating member 24, the elastic restoring force of the elastic member 25 can be used to make the earmuff main body 23 have a tendency to rotate toward the wearing region 11 by properly selecting the position of the elastic member 25, which is not limited herein.

Alternatively, the elastic member 25 may be a spring or the like, which is not limited herein.

In one embodiment, the shaft portion 324 is disposed through the second rotating component 24 and can rotate around the fourth axis X4. Here, the fourth axis X4 coincides with the central axis of the shaft portion 324, so that the rotation of the shaft portion 324 around the fourth axis X4 is embodied as the shaft portion 324 rotates around its own central axis. The fourth axis X4 is also perpendicular to the second axis X2 and the third axis X3.

In this manner, the present embodiment allows the earmuff device 20 to rotate relative to the ball axle body 321. When the user hung this embodiment headset and located neck position, the user can suitably rotate ear muff device 20, can avoid ear muff device 20 to support user's chin, is favorable to guaranteeing this embodiment headset wearing comfort level under different situation.

Further, referring to fig. 8, the second rotating member 24 is provided with a second rotating groove 241 extending around the fourth axis X4, and the shaft portion 324 is provided with a second rotating protrusion 326. The second rotating protrusion 326 is fitted in the second rotating groove 241.

The second rotating protrusion 326 can move in the second rotating groove 241 as the shaft portion 324 rotates. When the second rotating protrusion 326 abuts against the head and tail ends of the second rotating groove 241 (the two ends of the second rotating groove 241 in the circumferential direction of the fourth axis X4), the second rotating protrusion 326 and the second rotating groove 241 cooperate to limit the maximum rotating angle of the shaft portion 324, so that the rotation controllability of the earmuff device 20 is stronger, which is beneficial to reducing the burden of the user.

Further, as shown in fig. 4 and 7, the earmuff device 20 also includes a second damping member 26. The second damping member 26 is interposed between the second rotating member 24 and the shaft portion 324 to damp the relative rotation between the second rotating member 24 and the shaft portion 324. The second damping member 26 may be an elastic structure, and the second damping member 26 interposed between the second rotating member 24 and the shaft portion 324 is in a compressed state, and the elastic restoring force provided by the second damping member 26 is converted into a friction force with the second rotating member 24 and the shaft portion 324 to hinder the relative rotation between the second rotating member 24 and the shaft portion 324.

Because the damping force provided by the second damping member 26 is relatively small, a slight increase in force by the user will cause relative rotation between the second rotation member 24 and the shaft portion 324. The second damping member 26 can provide a damping feel during rotation of the earmuff device 20 by the user, which also contributes to improved controllability of the rotation of the earmuff device 20.

Optionally, the second damping member 26 extends around the fourth axis X4 and is sleeved on the outer circumference of the shaft portion 324.

Referring to fig. 1 and 9, fig. 9 is a schematic cross-sectional view of a region C of the headset shown in fig. 1.

In one embodiment, the headgear assembly 10 further includes a first roller assembly 14 and a second roller assembly 15. First wheel components 14 locate the slide arm 13 towards the one side of wearing district 11, and second wheel components 15 locate the slide arm 13 and deviate from the one side of wearing district 11, and the gyro wheel of first wheel components 14 and the gyro wheel of second wheel components 15 all support against slide arm 13. The roller of the first roller assembly 14 and the roller of the second roller assembly 15 can roll along with the sliding arm 13, that is, the roller of the first roller assembly 14 and the roller of the second roller assembly 15 can roll along with the sliding of the sliding arm 13.

In this way, the both sides of the sliding arm 13 of the headphone of this embodiment all abut against through the roller, so that the fit clearance of the position where the sliding arm 13 is located can be reduced, and this embodiment can even reach zero fit clearance, thereby reducing the shaking degree of the sliding arm 13 and improving the stroke precision of the sliding arm 13. And the roller of the first roller assembly 14 and the roller of the second roller assembly 15 can roll along with the sliding arm 13, and the rolling friction provided by the rollers makes the resistance received by the sliding arm 13 in the sliding process smaller, which is beneficial to ensuring the sliding arm 13 to slide smoothly.

In the conventional headset, the sliding arm slides in the groove of the head-mounted fixing bracket. In order to ensure that the sliding arm slides smoothly, the size of the groove body is often larger than the thickness of the sliding arm, namely, a larger fit clearance is formed between the sliding arm and the head-mounted fixing support and usually reaches 0.3mm, so that the condition that the sliding arm shakes is aggravated and the stroke precision of the sliding arm is influenced undoubtedly. In addition, if a small fit clearance, for example, a zero fit clearance, is required in the conventional headset, errors inevitably exist in the mold and process assembly, which leads to a significant reduction in the smoothness of the sliding arm. The headset of this embodiment supports both sides of the sliding arm 13 through the roller, and furthest reduces the fit clearance of the position where the sliding arm 13 is located, and further furthest reduces the shaking degree of the sliding arm 13 and improves the stroke precision of the sliding arm 13, and can also ensure that the sliding arm 13 slides smoothly.

In one embodiment, the orthographic projection of the wheel of the first scroll wheel assembly 14 on the reference plane overlaps with the orthographic projection of the wheel of the second scroll wheel assembly 15 on the reference plane (as indicated by plane β in fig. 9, the same below). Wherein a reference plane extends along the sliding arm 13 and is perpendicular to the relative direction of the first and second roller assemblies 14, 15, the reference plane also being perpendicular to a plane passing through the wearing region 11.

In other words, the roller of the first roller assembly 14 and the roller of the second roller assembly 15 abut against two surfaces of the sliding arm 13 facing and departing from the wearing area 11 at the same position, and the roller of the first roller assembly 14 and the roller of the second roller assembly 15 can stably limit the sliding arm 13, so as to avoid the sliding arm 13 from shaking, thereby being beneficial to further reducing the shaking degree of the sliding arm 13 and improving the stroke precision of the sliding arm 13.

Of course, in other embodiments of the present application, the roller of the first roller assembly 14 and the roller of the second roller assembly 15 may also abut against different positions of the sliding arm 13, which is not limited herein.

Referring to fig. 10 and 11 together, fig. 10 is a schematic structural view of a side of the headset of fig. 9 facing the wearing area, and fig. 11 is a schematic structural view of a side of the headset of fig. 9 facing away from the wearing area. The first and second roller assemblies 14 and 15 of the embodiment of the present application are exemplarily set forth below.

The first roller assembly 14 includes a first roller 141 and a second roller 142. The first and second rollers 141 and 142 are spaced apart from each other in a first direction (as indicated by an arrow Y1 in fig. 10 and 11, the same applies hereinafter). The second roller assembly 15 includes a third roller 151 and a fourth roller 152, and the third roller 151 and the fourth roller 152 are also spaced apart from each other in the first direction. Wherein the first direction is perpendicular to a plane through the wearing area 11, and the first direction is also parallel to the reference plane.

The orthographic projection of the first wheel 141 on the reference surface overlaps with the orthographic projection of the third wheel 151 on the reference surface, and the orthographic projection of the second wheel 142 on the reference surface overlaps with the orthographic projection of the fourth wheel 152 on the reference surface.

Referring to fig. 12 and 13 together, fig. 12 is a schematic structural view of a second part of the headset shown in fig. 1, and fig. 13 is a schematic structural view of an exploded part of the headset shown in fig. 12. Wherein fig. 12 shows the corresponding structure of the portion of the head mount device 10 to which the first ear muff device 21 is attached.

In one embodiment, the head mount apparatus 10 further includes a roller bracket 16, the roller bracket 16 is detachably disposed on the head mount bracket 12, and the first roller 141 and the second roller 142 are rotatably connected to the roller bracket 16. In other words, the roller on the side of the sliding arm 13 facing the wearing area 11 is detachably designed by the roller bracket 16, so that the assembly of the sliding arm 13 and the roller can be facilitated. Specifically, the roller of the second roller assembly 15 is first assembled to the head-mounted fixing bracket 12, then the sliding arm 13 is assembled, and finally the roller of the first roller assembly 14 is assembled to the head-mounted fixing bracket 12 through the roller bracket 16. Moreover, the roller bracket 16 is located at a side of the sliding arm 13 facing the wearing area 11, that is, the roller bracket 16 is located at an inner side of the head-mounted fixing bracket 12, so that the influence of the roller bracket 16 on the appearance of the headset of the present embodiment can be avoided.

Alternatively, the roller of the present embodiment is rotatably provided to the head mount device 10 by a roller shaft. To facilitate the assembly of the roller and the roller shaft and to ensure that the roller can roll with the slide arm 13, it is preferable that the first roller 141 is located at one side of the roller bracket 16 in the first direction and the second roller 142 is located at the other side of the roller bracket 16 in the first direction.

Further, the head mount apparatus 10 further includes a fixing pin 161. The head mount bracket 12 is provided with a first fixing hole 121, and the roller bracket 16 is provided with a second fixing hole 162. After the first and second rollers 141 and 142 are assembled to the head-mounted fixing bracket 12 through the roller bracket 16, the fixing pins 161 are inserted into the first and second fixing holes 121 and 162 to fix the roller bracket 16 to the head-mounted fixing bracket 12.

In other words, the roller bracket 16 of the present embodiment is connected to the head fixing bracket 12 through the roller shafts of the first roller 141 and the second roller 142, and is connected to the head fixing bracket 12 through the fixing pin 161, so as to realize the detachable design of the roller bracket 16.

Alternatively, the roller shaft and the fixing pin 161 may be made of stainless steel, and are not limited herein.

Further, as shown in fig. 10, the roller bracket 16 and the head-mounted fixing bracket 12 cooperate to form a first limiting portion 143 and a second limiting portion 144. The first roller (not shown in fig. 10, and the detailed structure is shown as 141 in fig. 13) is disposed in the first position-limiting portion 143 to limit the position of the first roller 141 in the first direction. The second roller (not shown in fig. 10, and the detailed structure is shown in fig. 13 as 142) is disposed in the second position-limiting portion 144 to limit the position of the second roller 142 in the first direction. Therefore, the positions of the first roller 141 and the second roller 142 can be prevented from being changed, and the effect of limiting the shaking of the sliding arm 13 by the first roller 141 and the second roller 142 can be further prevented from being influenced.

Similarly, as shown in fig. 11, a third limiting portion 153 and a fourth limiting portion 154 are disposed on a side of the head-mounted fixing bracket 12 away from the wearing area 11, the third roller 151 is disposed in the third limiting portion 153 to limit the position of the third roller 151 in the first direction, and the fourth roller 152 is disposed in the fourth limiting portion 154 to limit the position of the fourth roller 152 in the first direction.

Further, the head mount bracket 12 is provided with a slide groove 122, and the slide arm 13 is provided in the slide groove 122. The slide groove 122 extends around the wearing area 11, and the slide arm 13 is slidable along the slide groove 122 in the slide groove 122, that is, the slide arm 13 is slidable around the wearing area 11.

Referring to fig. 14a and 14b, fig. 14a and 14b show the cross-sectional configuration of the left half of the head mount device 10.

An abutting portion 135 is protruded from a surface of the slide arm 13 facing the wearing area 11, and the abutting portion 135 is movable with the slide arm 13 to restrict the slide arm 13 from further sliding after the abutting portion 135 abuts against the roller bracket 16.

In this way, when the contact portion 135 contacts the roller holder 16, the slide arm 13 is restricted from further sliding, and the slide arm 13 can be prevented from slipping out of the slide groove 122. Moreover, the roller bracket 16 and the abutting portion 135 are both located on one side of the head-mounted fixing bracket 12 facing the wearing area 11, that is, both are located on the inner side of the head-mounted fixing bracket 12, so that the influence on the product appearance of the headset of the present embodiment can be avoided, and the product appearance of the headset of the present embodiment is more competitive.

Further, the head mount 12 surrounds the wearing region 11 in a second direction (as indicated by an arrow Y2 in fig. 14a, the same applies hereinafter), and the roller bracket 16 is located at an end of the head mount 12 in the second direction. In this way, the roller bracket 16 can be matched with the abutting part 135 on the sliding arm 13, so as to limit the sliding arm 13 at the position where the sliding arm 13 is about to be separated from the head-mounted fixing bracket 12, thereby not only preventing the sliding arm 13 from slipping out of the sliding slot 122, but also ensuring that the sliding arm 13 has enough maximum extension, being beneficial to adapting to the wearing conditions of more users, and ensuring that different users can adjust the earmuff device 20 to a proper position for wearing.

Referring to fig. 1, 15 and 16, fig. 15 is a schematic structural view of a fourth part of the headset shown in fig. 1, and fig. 16 is a schematic structural view of an exploded part of the headset shown in fig. 15. Fig. 15 shows a structure of the head mount apparatus 10 of fig. 1 on the side facing the wearing area 11.

The following description is given by way of example, and not limitation, of the headset including the first and second ear cup devices 21 and 22 and the headset holder device 10 including the first and second sliding arms 131 and 132.

In one embodiment, the first sliding arm 131 is connected to the first earmuff device 21 and located on one side of the wearing region 11, the second sliding arm 132 is connected to the second earmuff device 22 and located on the other side of the wearing region 11, and both the first sliding arm 131 and the second sliding arm 132 are slidably disposed on the head fixing bracket 12.

The head mount device 10 further includes a first rack 41, a second rack 42, and a gear transmission mechanism (including a first gear assembly 43 and a second gear assembly 44, hereinafter). The first rack 41 is connected with the first sliding arm 131, the second rack 42 is connected with the second sliding arm 132, the first rack 41 and the second rack 42 are respectively connected with the gear transmission mechanism in a transmission manner, and any one of the first sliding arm 131 and the second sliding arm 132 can drive the other one to synchronously slide in the opposite direction or in the reverse direction.

Through the above manner, the first sliding arm 131 and the second sliding arm 132 slide synchronously, so that the extension amount of the first sliding arm 131 and the extension amount of the second sliding arm 132 can be kept consistent at any time, a user can conveniently adjust the extension amounts of the first sliding arm 131 and the second sliding arm 132, the first earmuff device 21 and the second earmuff device 22 can be conveniently and synchronously adjusted to be worn at proper positions, and the use burden of the user is favorably reduced. And the protruding amounts of the first sliding arm 131 and the second sliding arm 132 are accurately controlled through the matching of the rack and gear transmission mechanism, so that the large difference generated by the protruding amounts of the first sliding arm 131 and the second sliding arm 132 can be effectively avoided.

Also, since the headgear fixing bracket 12 is disposed around the wearing region 11 to generally assume a curved shape, the first and second racks 41 and 42 are also generally curved in the headgear fixing bracket 12. The first rack 41 and the second rack 42 are located on the same side of the gear transmission mechanism, which is beneficial to keeping the bending amount of the first rack 41 consistent with that of the second rack 42, further ensuring the meshing condition of the first rack 41 and the second rack 42 with the gear transmission mechanism to be stable, and being beneficial to ensuring the stability of the movement of the first sliding arm 131 and the second sliding arm 132.

In the existing headset, the first rack and the second rack are respectively located at the upper side and the lower side of the gear transmission mechanism, for example, the first rack is located at a side of the gear transmission mechanism departing from the wearing area, and the second rack is located at a side of the gear transmission mechanism facing the wearing area. Because the bending amount of the first rack and the second rack which are distributed up and down easily forms difference, the bending amount of the first rack and the bending amount of the second rack are not beneficial to ensuring consistency, the meshing condition of the first rack and the second rack and the gear transmission mechanism is easy to cause instability, and then the first sliding arm and the second sliding arm are easy to cause instability in movement.

Alternatively, the first and second racks 41 and 42 are spaced apart from each other in the first direction described above, so that the first and second racks 41 and 42 can be provided on the same side of the gear transmission mechanism. In addition, in the case where the sliding groove 122 is provided in the head-mounted fixing bracket 12, the first sliding arm 131, the second sliding arm 132, the first rack 41, and the second rack 42 are slidably provided in the sliding groove 122 in the present embodiment.

In an embodiment, since a certain space is generally required to be reserved on one side of the head-mounted fixing bracket 12 facing the wearing region 11 in the design of the headset, the head-mounted fixing bracket 12 is prevented from directly contacting with the head of the user, and the wearing comfort of the user is ensured. The first and second toothed racks 41, 42 are located on a side of the gear transmission facing away from the wearing area 11, i.e. the gear transmission is located close to the wearing area 11 with respect to the first and second toothed racks 41, 42. This embodiment can utilize the space that sets up buffer structure to set up gear drive, and gear drive can not additionally occupation space for headphone's whole space utilization improves, is favorable to wearing the less thickness dimension of the design of support device 10, makes headphone's of this embodiment product visual effect better

Certainly, because the volume of the gear transmission mechanism of the embodiment is small, the gear transmission mechanism does not occupy too much space for setting the buffer structure, and the headset can still set a sufficient buffer structure to ensure the wearing comfort of the user.

Optionally, first and second racks 41, 42 are adjacent to wearing area 11 with respect to first and second sliding arms 131, 132. Specifically, first rack 41 is located adjacent to wearing area 11 with respect to first sliding arm 131, and second rack 42 is located adjacent to wearing area 11 with respect to second sliding arm 132.

In one embodiment, the gear transmission mechanism includes a first gear assembly 43 and a second gear assembly 44 drivingly connected to each other. The gear of the first gear assembly 43 is engaged with the first rack 42, and the gear of the second gear assembly 44 is engaged with the second rack 41. Wherein, with the sliding of either the first sliding arm 131 or the second sliding arm 132, the gear rotation direction of the first gear assembly 43 is opposite to the gear rotation direction of the second gear assembly 44, so that the sliding of either the first sliding arm 131 or the second sliding arm 132 can drive the other to synchronously slide toward or away from each other.

Specifically, the gear transmission mechanism further includes a main bevel gear 45. The first gear assembly 43 includes a first auxiliary bevel gear 431 and a first straight gear 432, and the first auxiliary bevel gear 431 and the first straight gear 432 are coaxially disposed and can be synchronously rotated. The second gear assembly 44 includes a second subsidiary bevel gear 441 and a second spur gear 442, and the second subsidiary bevel gear 441 and the second spur gear 442 are coaxially disposed and can be rotated in synchronization. The first and second subsidiary bevel gears 431 and 441 are respectively located at both sides of the main bevel gear 45 and both mesh with the main bevel gear 45.

When the first sliding arm 131 slides, the first rack 41 can drive the first auxiliary bevel gear 431 to rotate through the first straight gear 432, so as to drive the main bevel gear 45 to rotate through the first auxiliary bevel gear 431, so as to drive the second auxiliary bevel gear 441 to reversely rotate through the main bevel gear 45, and further drive the second rack 42 to slide towards the direction opposite to the moving direction of the first rack 41 through the second straight gear 442, namely drive the second sliding arm 132 to synchronously slide in the opposite direction or back to back with the first sliding arm 131.

For example, as shown in fig. 15, the first sliding arm 131 slides in a direction away from the gear transmission mechanism, and drives the first rack 41 to move, the first rack 41 drives the first auxiliary bevel gear 431 and the first straight gear 432 to rotate clockwise, and drives the second auxiliary bevel gear 441 and the second straight gear 442 to rotate counterclockwise through the main bevel gear 45, and the second straight gear 442 drives the second rack 42 to move, so that the second sliding arm 132 also synchronously slides in a direction away from the gear transmission mechanism.

Further, the gear transmission mechanism also includes a gear shaft 46. The first auxiliary bevel gear 431 and the first straight gear 432 are sleeved on the gear shaft 46 and can rotate relative to the gear shaft 46. The second auxiliary bevel gear 441 and the second spur gear 442 are sleeved on the gear shaft 46 and can rotate relative to the gear shaft 46.

In this way, the first auxiliary bevel gear 431, the first straight gear 432, the second auxiliary bevel gear 441 and the second straight gear 442 are coaxially arranged through the gear shaft 46, and the first auxiliary bevel gear 431, the first straight gear 432, the second auxiliary bevel gear 441 and the second straight gear 442 can rotate relative to the gear shaft 46, that is, the rotation of the first auxiliary bevel gear 431 and the first straight gear 432 is independent of the rotation of the second auxiliary bevel gear 441 and the second straight gear 442, and does not affect each other, which is beneficial to simplifying the structure of the gear transmission mechanism.

Alternatively, the gear shaft 46 is fixed to the head-mounted fixing bracket 12, i.e., the gear shaft 46 is not rotatable, so that the first auxiliary bevel gear 431, the first straight gear 432, the second auxiliary bevel gear 441, and the second straight gear 442 are all rotatable relative to the gear shaft 46.

Referring to fig. 14a-14b and fig. 17a-17b together, fig. 17a-17b are schematic sectional views of a fifth part of the headphone shown in fig. 1.

In one embodiment, the head mount bracket 12 is provided with a first set of retaining grooves 124 and a second set of retaining grooves 125. The first and second retaining groove sets 124 and 125 each include at least two retaining grooves 126 sequentially distributed in a direction around the wearing area 11.

The head mount device 10 further includes a first resilient piece 171 and a second resilient piece 172. The first elastic piece 171 is connected with the first sliding arm 131, and the second elastic piece 172 is connected with the second sliding arm 132. The first elastic piece 171 can be selectively inserted into different limiting grooves 126 of the first limiting groove group 124 to fix the relative position between the first sliding arm 131 and the head-mounted fixing bracket 12, as shown in fig. 14 b. The second elastic piece 172 can be selectively inserted into different position-limiting grooves 126 of the second position-limiting groove group 125 to fix the relative position between the second sliding arm 132 and the head-mounted fixing bracket 12, as shown in fig. 17 b.

As the first sliding arm 131 slides relative to the head-mounted fixing bracket 12, the first elastic pieces 171 are respectively embedded into different limiting grooves 126 of the first limiting groove group 124. When the first sliding arm 131 stops sliding, the first elastic piece 171 cooperates with the currently embedded limiting groove 126 to fix the relative position between the first sliding arm 131 and the head-mounted fixing bracket 12. Similarly, as the second sliding arm 132 slides relative to the head-mounted fixing bracket 12, the second elastic pieces 172 are respectively embedded into different limiting grooves 126 of the second limiting groove group 125. When the second sliding arm 132 stops sliding, the second elastic piece 172 cooperates with the limit groove 126 into which it is currently inserted to fix the relative position between the second sliding arm 132 and the head-mounted fixing bracket 12.

Through the manner, when the user adjusts the extension amounts of the first sliding arm 131 and the second sliding arm 132, the current extension amounts of the first sliding arm 131 and the second sliding arm 132 can be kept at any time, so that the adjustment operation of the user can be facilitated, and the use burden of the user can be reduced.

Further, the first sliding arm 131 is provided with a first abutting portion 1351 at a position adjacent to the first spring plate 171. The second sliding arm 132 is provided with a second abutting portion 1352 at a position adjacent to the second spring piece 172. The head mount apparatus 10 further includes a first roller bracket 163 corresponding to the first abutting portion 1351 and a second roller bracket 164 corresponding to the second abutting portion 1352 to restrict the first sliding arm 131 from being detached from the head mount bracket 12 when the first abutting portion 1351 abuts against the first roller bracket 163, and to restrict the second sliding arm 132 from being detached from the head mount bracket 12 when the second abutting portion 1352 abuts against the second roller bracket 164.

In this way, the present embodiment is provided with the first abutting portion 1351 and the first roller bracket 163 for the first slide arm 131 to prevent the first slide arm 131 from coming off the head mount fixing bracket 12, and is provided with the second abutting portion 1352 and the second roller bracket 164 for the second slide arm 132 to prevent the second slide arm 132 from coming off the head mount fixing bracket 12.

In addition, in the present application, unless otherwise expressly specified or limited, the terms "connected," "stacked," and the like are to be construed broadly, e.g., as meaning permanently attached, removably attached, or integral to one another; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A headset comprising a head-mount device, a first earmuff device, and a second earmuff device;

the head-mounted support device comprises a head-mounted fixed support, wherein a wearing area is formed by the head-mounted fixed support, and the head of a user is positioned in the wearing area when the user wears the headset;

the head mount device further comprises a first sliding arm and a second sliding arm, the first sliding arm is connected with the first earmuff device and is located on one side of the wearing area, the second sliding arm is connected with the second earmuff device and is located on the other side of the wearing area, and the first sliding arm and the second sliding arm are both slidably arranged on the head fixing bracket;

the head-mounted support device further comprises a first rack, a second rack and a gear transmission mechanism, the first rack is connected with the first sliding arm, the second rack is connected with the second sliding arm, the first rack and the second rack are respectively in transmission connection with the gear transmission mechanism, and one of the first sliding arm and the second sliding arm can drive the other sliding arm to synchronously slide in the opposite direction or in the opposite direction in a sliding manner;

wherein the first rack and the second rack are located on the same side of the gear transmission mechanism.

2. The headset of claim 1,

the first rack and the second rack are located on a side of the gear transmission mechanism facing away from the wearing area.

3. The headset of claim 2,

the first rack and the second rack are close to the wearing area relative to the first sliding arm and the second sliding arm.

4. The headset according to claim 1 or 2,

the gear transmission mechanism comprises a first gear assembly and a second gear assembly which are in transmission connection with each other;

the gear of the first gear assembly is engaged with the first rack and the gear of the second gear assembly is engaged with the second rack, wherein the gear turning direction of the first gear assembly is opposite to the gear turning direction of the second gear assembly as either of the first sliding arm and the second sliding arm slides.

5. The headset of claim 4,

the gear transmission mechanism further comprises a main bevel gear;

the first gear assembly comprises a first auxiliary bevel gear and a first straight gear, and the first auxiliary bevel gear and the first straight gear are coaxially arranged and can synchronously rotate;

the second gear assembly comprises a second auxiliary bevel gear and a second straight gear, and the second auxiliary bevel gear and the second straight gear are coaxially arranged and can synchronously rotate;

the first auxiliary bevel gear and the second auxiliary bevel gear are respectively positioned on two sides of the main bevel gear and are both meshed with the main bevel gear.

6. The headset of claim 5,

the gear transmission mechanism further comprises a gear shaft;

the first auxiliary bevel gear and the first straight gear are sleeved on the gear shaft and can rotate relative to the gear shaft;

the second auxiliary bevel gear and the second straight gear are sleeved on the gear shaft and can rotate relative to the gear shaft.

7. The headset according to claim 1 or 2,

the first and second racks being spaced from each other in a first direction;

wherein the first direction is perpendicular to a plane passing through the wearing region.

8. The headset according to claim 1 or 2,

the head-mounted fixing support is provided with a first limiting groove group and a second limiting groove group;

the first limiting groove group and the second limiting groove group respectively comprise at least two limiting grooves which are sequentially distributed along the direction surrounding the wearing area;

the head-mounted support device further comprises a first elastic sheet and a second elastic sheet, the first elastic sheet is connected with the first sliding arm, the second elastic sheet is connected with the second sliding arm, the first elastic sheet can be selectively embedded into different limiting grooves of the first limiting groove group to fix the relative position between the first sliding arm and the head-mounted fixed support, and the second elastic sheet can be selectively embedded into different limiting grooves of the second limiting groove group to fix the relative position between the second sliding arm and the head-mounted fixed support.

9. The headset of claim 8,

a first abutting part is arranged at the position, adjacent to the first elastic sheet, of the first sliding arm;

a second abutting part is arranged at the position, adjacent to the second elastic sheet, of the second sliding arm;

the head-mounted bracket device further comprises a first roller bracket corresponding to the first abutting portion and a second roller bracket corresponding to the second abutting portion, so that the first sliding arm is limited to be separated from the head-mounted fixed bracket when the first abutting portion abuts against the first roller bracket, and the second sliding arm is limited to be separated from the head-mounted fixed bracket when the second abutting portion abuts against the second roller bracket.

10. The headset according to claim 1 or 2,

the head-mounted fixed support is provided with a sliding chute;

the first sliding arm, the second sliding arm, the first rack and the second rack are slidably arranged in the sliding groove.

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