Rotary structure and headphone

Abstract

The embodiment of the utility model discloses a rotating structure and a headphone, which are characterized in that a rotating support is connected to an ear shell, a first rotating limiting structure is arranged on the rotating support, and a second rotating limiting structure is arranged on a sliding arm connected with a head beam main body; and the second rotation limiting structure is matched with the first rotation limiting structure to limit the rotation range of the ear shell relative to the sliding arm. Therefore, the rotary limiting structure is arranged on the sliding arm of the headphone, so that the rotary structure is convenient to assemble and has good strength, and meanwhile, the arrangement mode allows the earlap to have a larger rotation range. Moreover, a rotary damping block is arranged at one end of the rotary support, the rotary damping block is provided with a rotary damping hole, the rotary damping block is further provided with an adjusting groove, and the rotary damping hole makes contact with the connecting section to provide damping for the sliding arm in the rotating process relative to the rotary support, so that a good angle positioning effect is achieved. And the damping force can be conveniently set through the adjusting groove.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a rotating structure and a head-mounted earphone. Background Art

[0002] Earphones are a widely used audio playback device. According to the wearing method of earphones, they are mainly divided into types such as head-mounted, ear-hook type and earplug type. In order to facilitate the carrying and storage of head-mounted earphones, some head-mounted earphones are designed with folding mechanisms, telescopic structures, rotating structures, etc. to reduce the size of the head-mounted earphones. However, the existing rotating structures have limited rotation angles and rotation directions, and there are problems such as unstable rotation and easy over-twisting damage during rotation, which affect the user experience. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a rotating structure and a head-mounted earphone, which are beneficial to solve or improve at least some of the above problems existing in the prior art.

[0004] In a first aspect, an embodiment of the utility model provides a rotating structure for a head-mounted earphone. The rotating structure includes an ear shell, a rotating bracket, a sliding arm and a rotating damping block; the rotating bracket is connected to the ear shell, and the rotating bracket has a first rotation limiting structure; the sliding arm has a sliding section and a connecting section connected in sequence. The sliding section is telescopically connected to the head beam body of the head-mounted earphone. The connecting section has a second rotation limiting structure, and the second rotation limiting structure cooperates with the first rotation limiting structure to limit the rotation range of the rotating bracket and the ear shell relative to the sliding arm; the rotating damping block is arranged at one end of the rotating bracket and connected to the rotating bracket. The rotating damping block has a rotating damping hole, the connecting section is inserted into the rotating damping hole and is in interference fit with the rotating damping hole. The rotating damping block also has an adjusting groove, the adjusting groove penetrates the side wall of the rotating damping hole, and the inner wall of the rotating damping hole contacts the connecting section to provide damping during the rotation of the sliding arm relative to the rotating bracket.

[0005] Further, the connecting section has a damping shaft section, a stop shaft section, a transition shaft section and a limiting shaft section arranged in sequence along the extension direction of the sliding arm. The damping shaft section is inserted into the rotating damping hole. The diameter of the stop shaft section is larger than that of the damping shaft section and the transition shaft section. The stop shaft section is clamped between the rotating damping block and the rotating bracket. The second rotation limiting structure is arranged on the limiting shaft section.

[0006] Further, the second rotation limiting structure is a limiting groove, the limiting groove extends along the circumferential direction of the limiting shaft section, and the limiting groove has a first limiting wall and a second limiting wall that are oppositely arranged along the circumferential direction of the limiting shaft section; the first rotation limiting structure is a limiting bump, the limiting bump is arranged in the limiting groove and is configured to move between the first limiting wall and the second limiting wall; the rotating bracket is provided with a first installation groove, the first installation groove has a positioning groove section, a contraction groove section, and a stop block groove section that are sequentially arranged along the extending direction of the sliding arm, at least a part of the stop shaft section is arranged in the positioning groove section, the limiting bump protrudes in the stop block groove section, the distance between two opposite side walls of the first installation groove is reduced at the contraction groove section, and the transition shaft section is arranged in the contraction groove section.

[0007] Further, the second rotation limiting structure is a limiting groove, the limiting groove extends along the circumferential direction of the connecting section, and the limiting groove has a first limiting wall and a second limiting wall that are oppositely arranged along the circumferential direction of the connecting section; the first rotation limiting structure is a limiting bump, the limiting bump is arranged in the limiting groove and is configured to move between the first limiting wall and the second limiting wall.

[0008] Further, the limiting groove has a stop end face, and the stop end face is oppositely arranged with the top face of the limiting bump to limit the axial movement of the rotating bracket along the sliding arm.

[0009] Further, the rotating bracket has a first installation hole, and the first installation hole is arranged at an interval from the first rotation limiting structure; the ear shell has a second installation hole corresponding to the position of the first installation hole, and the rotation structure further includes an ear shell fastener, and the ear shell fastener passes through the first installation hole and the second installation hole to connect the rotating bracket and the ear shell.

[0010] Further, the ear shell has a second installation groove, and the rotating bracket and the rotation damping block are fixed in the second installation groove.

[0011] Further, the rotation structure further includes an ear shell top cover, which is arranged on one side of the rotating bracket away from the bottom of the second installation groove and at least partially covers the opening of the second installation groove, the ear shell top cover has a third installation hole corresponding to the position of the first installation hole, and the ear shell fastener also passes through the third installation hole to connect the ear shell top cover, the rotating bracket and the ear shell.

[0012] Further, the rotation damping block has a fourth installation hole, a connecting column protrudes from the bottom of the second installation groove, the second installation hole is arranged on the connecting column, the connecting column passes through the fourth installation hole and the first installation hole and is oppositely arranged with the ear shell top cover.

[0013] Further, one side of the auricle top cover opposite to the rotating bracket has a positioning groove, the end of the connecting column is arranged in the positioning groove, and the third mounting hole is opened at the bottom of the positioning groove.

[0014] Further, one side of the rotary damping block opposite to the rotating bracket has a first positioning structure, and one side of the rotating bracket opposite to the rotary damping block has a second positioning structure corresponding to the first positioning structure; wherein, one of the first positioning structure and the second positioning structure is a positioning groove, and the other is a positioning block, and the positioning block is inserted into the positioning groove.

[0015] In a second aspect, an embodiment of the present invention further provides a pair of headphones, including a head beam main body and two rotating structures as described in the first aspect; one of the rotating structures is provided at each end of the head beam main body; wherein, the sliding section is telescopically connected to the head beam main body.

[0016] The embodiment of the present invention provides a rotating structure and a pair of headphones. By connecting a rotating bracket to the ear shell, a first rotating limit structure is arranged on the rotating bracket, and a second rotating limit structure is arranged on the sliding arm connected to the head beam main body. The second rotating limit structure cooperates with the first rotating limit structure to limit the rotation range of the ear shell relative to the sliding arm. Thus, by arranging the rotating limit structure on the sliding arm of the pair of headphones, the rotating structure is convenient to assemble and has good strength. At the same time, this arrangement allows the ear shell to have a larger rotation range. And, in the embodiment of the present invention, a rotary damping block is arranged at one end of the rotating bracket. The rotary damping block has a rotary damping hole, and the rotary damping block also has an adjusting groove. The rotary damping hole contacts the connecting section to provide damping during the rotation of the sliding arm relative to the rotating bracket, thereby obtaining a good angle positioning effect. The adjusting groove can conveniently set the magnitude of the damping force. Description of the Drawings

[0017] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become clearer. In the drawings:

[0018] Figure 1 is a schematic three-dimensional structure diagram of a pair of headphones according to an embodiment of the present invention;

[0019] Figure 2 is an exploded view of a pair of headphones according to an embodiment of the present invention;

[0020] Figure 3 is an exploded view of a rotating structure according to an embodiment of the present invention;

[0021] Figure 4Schematic cross-sectional view of the rotating structure according to an embodiment of the present utility model;

[0022] Figure 5 Schematic perspective view of the sliding arm according to an embodiment of the present utility model;

[0023] Figure 6 Schematic perspective view of one perspective of the rotating bracket according to an embodiment of the present utility model;

[0024] Figure 7 Schematic perspective view of another perspective of the rotating bracket according to an embodiment of the present utility model;

[0025] Figure 8 Schematic view of the connection between the rotating bracket and the sliding arm according to an embodiment of the present utility model;

[0026] Figure 9 Schematic cross-sectional view of the connection between the rotating bracket, the sliding arm, the rotating damping block and the ear shell top cover according to an embodiment of the present utility model;

[0027] Figure 10 Schematic perspective view of the rotating damping block according to an embodiment of the present utility model;

[0028] Figure 11 Schematic view of the rotating structure after removing the ear shell top cover according to an embodiment of the present utility model;

[0029] Figure 12 Exploded schematic view of the pulling structure according to an embodiment of the present utility model;

[0030] Figure 13 Partial schematic view of the lower housing according to an embodiment of the present utility model;

[0031] Figure 14 Partial schematic view of the upper housing according to an embodiment of the present utility model;

[0032] Figure 15 Schematic view of the head beam end cap according to an embodiment of the present utility model;

[0033] Figure 16 Schematic view of the pulling damping block according to an embodiment of the present utility model;

[0034] Figure 17 Partial cross-sectional schematic view of the pulling structure when the sliding section retracts into the head beam main body according to an embodiment of the present utility model;

[0035] Figure 18 Partial cross-sectional schematic view of the pulling structure when the sliding section extends to the maximum length of the head beam main body according to an embodiment of the present utility model.

[0036] Explanation of reference numerals:

[0037] 10 - Ear shell; 11 - Second mounting hole; 12 - Second mounting groove; 13 - Connecting column; 20 - Rotating bracket; 21 - First mounting groove; 211 - Positioning groove section; 212 - Shrinkage groove section; 213 - Stopper groove section; 214 - Limiting bump; 22 - First mounting hole; 23 - Second positioning structure; 30 - Sliding arm; 31 - Sliding section; 311 - Snap table; 312 - Fixed groove; 313 - Second stop surface; 32 - Connecting section; 321 - Limiting groove; 3211 - First limiting wall; 3212 - Second limiting wall; 3213 - Stop end face; 322 - Damping shaft section; 323 - Stop shaft section; 324 - Transition shaft section; 325 - Limiting shaft section; 40 - Rotating damping block; 41 - Rotating damping hole; 42 - Adjusting groove; 43 - Fourth mounting hole; 44 - First positioning structure; 50 - Head beam main body; 51 - Head beam housing; 511 - Slideway; 5111 - Elastic bump; 5112 - Avoidance groove; 512 - Damping block accommodation hole; 5121 - Tapered wall hole section; 513 - Upper housing; 5131 - Main body part; 5132 - Extension part; 5133 - First head beam mounting hole; 5134 - End cover positioning groove; 514 - Lower housing; 5141 - Second head beam mounting hole; 515 - First stop surface; 52 - Head beam end cover; 521 - Sliding arm through hole; 522 - End cover positioning block; 523 - Third head beam mounting hole; 53 - Head beam fastener; 60 - Ear shell top cover; 61 - Ear shell fastener; 62 - Third mounting hole; 63 - Positioning groove; 70 - Pull - out damping block; 71 - Damping groove; 72 - Bulge; 80 - Spring wire; 81 - Fixed part; 82 - Free end. Detailed implementation mode

[0038] The following describes the present application based on embodiments, but the present application is not limited to these embodiments. In the following detailed description of the present application, some specific details are described in detail. For those skilled in the art, the present application can be fully understood without the description of these details. In order to avoid obscuring the essence of the present application, well - known methods, processes, procedures, components, and circuits are not described in detail.

[0039] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0040] Unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] For ease of description, spatially relative terms such as "inner", "outer", "below", "beneath", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptive terms used herein should be interpreted accordingly.

[0042] Unless the context clearly requires otherwise, words such as "including", "comprising", etc. throughout the application shall be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is, the meaning of "including but not limited to".

[0043] In the description of this application, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0044] The embodiments of the present utility model provide a head-mounted earphone and a rotating structure for the head-mounted earphone. Refer to Figure 1 and Figure 2 , the head-mounted earphone of the embodiments of the present utility model includes a head beam main body 50 and two rotating structures respectively arranged at both ends of the head beam main body 50. The head beam main body 50 is used to hang on the user's head when the head-mounted earphone is in use. The rotating structure includes an ear shell 10, and the ear shell 10 is used to accommodate the speaker unit of the head-mounted earphone. By providing the rotating structure, the ear shell 10 can rotate relative to the head beam main body 50, so as to facilitate the storage of the head-mounted earphone. The rotating structure of the embodiments of the present utility model will be specifically described below with reference to the drawings.

[0045] Refer to Figure 3 and Figure 4 , in this embodiment, the rotating structure further includes a rotating bracket 20 and a sliding arm 30. Refer to Figures 3 - 5 and Figure 8, the sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence, wherein the sliding section 31 is telescopically connected to the head beam main body 50, so that the length of the headset can be adjusted to fit the heads of different users. The rotating bracket 20 is connected to the ear cup 10 and circumferentially fixed relative to the ear cup 10. The connecting section 32 of the sliding arm 30 is exposed outside the head beam main body 50 and rotatably connected to the rotating bracket 20. Thus, the ear cup 10 and the rotating bracket 20 can rotate around the connecting section 32, realizing the rotation of the ear cup 10 relative to the head beam main body 50. Optionally, the sliding arm 30 can have a hollow structure inside, which can realize the function of wire routing and facilitate the cable connection to the speaker unit in the ear cup 10.

[0046] Referring to Figure 6 and Figure 7 , the rotating bracket 20 has a first rotation limiting structure, and the connecting section 32 of the sliding arm 30 has a second rotation limiting structure corresponding to the first rotation limiting structure. The first rotation limiting structure and the second rotation limiting structure cooperate to limit the rotation range of the rotating bracket 20 and the ear cup 10 relative to the sliding arm 30.

[0047] In some embodiments, as Figure 5 shown, the second rotation limiting structure is a limiting groove 321. The limiting groove 321 extends along the circumferential direction of the connecting section 32, and the limiting groove 321 has a first limiting wall 3211 and a second limiting wall 3212 oppositely arranged along the circumferential direction of the connecting section 32. As Figures 6 - 8 shown, the first rotation limiting structure of the rotating bracket 20 is a limiting protrusion 214. The limiting protrusion 214 is arranged in the limiting groove 321 and can move between the first limiting wall 3211 and the second limiting wall 3212. By setting the relative positions of the first limiting wall 3211 and the second limiting wall 3212, the movement range of the limiting protrusion 214 in the limiting groove 321 can be set, and further the rotation angle range of the ear cup 10 relative to the head beam main body 50 can be set. By adopting this design in the embodiments of the present invention, it is convenient to set the rotation angle range of the ear cup 10, and a larger rotation angle can be allowed and the connection strength can be ensured, preventing damage to the rotation structure caused by excessive torsion.

[0048] Optionally, as Figure 4 and Figure 9 shown, the limiting groove 321 has a stop end face 3213. The stop end face 3213 is oppositely arranged with the top face of the limiting protrusion 214 to limit the axial movement of the rotating bracket 20 along the connecting section 32 and prevent the rotating bracket 20 from axially disengaging from the sliding arm 30.

[0049] Referring to Figures 4 - 9, the rotating bracket 20 has a first mounting hole 22, and the first mounting hole 22 is spaced apart from the first rotation limiting structure. The ear shell 10 has a second mounting hole 11 corresponding to the position of the first mounting hole 22. The rotating structure further includes an ear shell fastener 61. The ear shell fastener 61 passes through the first mounting hole 22 and the second mounting hole 11 to connect the rotating bracket 20 and the ear shell 10. The ear shell fastener 61 can be a pin, a screw, a bolt or other connecting member that can connect the ear shell 10 and the rotating bracket 20. Preferably, the ear shell fastener 61 is a detachable fastener to facilitate the repair of the rotating structure. For example, the ear shell fastener 61 can be a screw.

[0050] In some embodiments, referring to Figure 3 , Figure 4 and Figure 9 , the rotating structure further includes a rotating damping block 40 for contacting the connecting section 32 of the sliding arm 30, so as to provide damping during the rotation of the sliding arm 30 relative to the rotating bracket 20, so that the user can stabilize the ear shell 10 at the required angle after rotating the ear shell 10 relative to the head beam body 50, achieving an angle positioning effect and preventing the ear shell 10 from rotating arbitrarily when not operated. The rotating damping block 40 can be made of any material that can provide damping by squeezing the sliding arm 30. For example, wear-resistant silica gel, wear-resistant rubber or other wear-resistant composite materials can be selected. In this embodiment, the rotating damping block 40 can be made of polyoxymethylene resin (POM). Polyoxymethylene resin has the characteristics of high hardness, high rigidity, high wear resistance, good elasticity and good dimensional stability, and is suitable for making the rotating damping block 40 to provide damping by friction with the connecting section 32.

[0051] In some embodiments, the rotating damping block 40 is provided at one end of the rotating bracket 20 and connected to the rotating bracket 20. The rotating damping block 40 is at least circumferentially fixed relative to the rotating bracket 20. While the sliding arm 30 rotates relative to the rotating bracket 20, it also rotates relative to the rotating damping block 40. The rotating damping block 40 frictions with the connecting section 32 to provide damping. The rotating damping block 40 can include one or more, for example, it can be a block structure provided outside the connecting section 32 and in contact with and squeezing the side surface of the connecting section 32. In one embodiment, referring to Figure 10 , the rotating damping block 40 has a rotating damping hole 41, and the connecting section 32 is inserted into the rotating damping block 40 and has an interference fit with the rotating damping hole 41. When the connecting section 32 is inserted into the rotating damping hole 41, the outer surface of the connecting section 32 is in close contact with the inner wall of the rotating damping hole 41, and a better damping effect can be achieved.

[0052] Optionally, as Figure 10As shown, the rotary damping block 40 further has an adjustment groove 42, which is opened on the side wall of the rotary damping hole 41 and can penetrate the side wall of the rotary damping hole 41 along the radial direction of the rotary damping hole 41. Refer to Figure 10 , the rotary damping block 40 can form a damping cylinder, which is a cylindrical structure. The rotary damping hole 41 is opened in the middle of the damping cylinder, and the damping cylinder surrounds the outside of the connecting section 32. The upper end of the adjustment groove 42 can extend to the end face of the damping cylinder. The setting of the adjustment groove 42 can enable the damping cylinder to have a certain deformation space, which is convenient for the connecting section 32 to be installed into the rotary damping hole 41. And by designing the width and length of the adjustment groove 42, the contact tightness between the rotary damping hole 41 and the connecting section 32 can be adjusted, so as to realize the setting of the damping force between the rotary damping hole 41 and the connecting section 32.

[0053] In some embodiments, refer to Figure 11 , one end of the ear shell 10 for connecting with the head beam main body 50 has a second installation groove 12, and the rotary bracket 20 and the rotary damping block 40 are fixed in the second installation groove 12, which can thus play a role in hiding and protecting the rotary bracket 20 and the rotary damping block 40. The contour shape of the second installation groove 12 matches that of the rotary bracket 20 and the rotary damping block 40 to realize the positioning of the rotary bracket 20 and the rotary damping block 40. Preferably, the second installation groove 12 is a non-rotary shape, which can prevent the rotary bracket 20 and the rotary damping block 40 from rotating in the second installation groove 12. Optionally, a number of anti-slip protrusions are formed on the side surfaces of the rotary bracket 20 and the rotary damping block 40, and the anti-slip protrusions can be mutually extruded with the side wall of the second installation groove 12 to prevent the rotary bracket 20 or the rotary damping block 40 from shaking in the second installation groove 12, ensuring the user experience.

[0054] Refer to Figure 3 and Figure 4 , the rotary structure further includes an ear shell top cover 60. The ear shell top cover 60 is connected to the ear shell 10, and one side of the rotary bracket 20 away from the bottom of the second installation groove 12 and located at the opening of the second installation groove 12 at least partially covers the opening of the second installation groove 12, so as to play a role in shielding and protecting the rotary bracket 20 and other structures in the second installation groove 12. The earphone top cover has a third installation hole 62 corresponding to the position of the first installation hole 22, and the ear shell fastener 61 also passes through the third installation hole 62 to connect the ear shell top cover 60, the rotary bracket 20 and the ear shell 10.

[0055] Optionally, the rotary damping block 40 has a fourth installation hole 43. As Figure 4 and Figure 11As shown, a connecting post 13 protrudes from the bottom of the second mounting groove 12, and the second mounting hole 11 is provided in the connecting post 13. The connecting post 13 extends in the direction of the opening of the second mounting groove 12. The sizes of the fourth mounting hole 43 and the first mounting hole 22 correspond to the size of the connecting post 13, so that the connecting post 13 passes through the fourth mounting hole 43 of the rotary damping block 40 and the first mounting hole 22 of the rotary bracket 20 and is oppositely arranged with the ear shell top cover 60. Thus, the connecting post 13 can position the rotary damping block 40 and the rotary bracket 20. Further, there may be two connecting posts 13 arranged at intervals, and each connecting post 13 is provided with a corresponding second mounting hole 11. Thus, after the connecting post 13 passes through the fourth mounting hole 43 of the rotary damping block 40 and the first mounting hole 22 of the rotary bracket 20, circumferential fixation of the rotary damping block 40 and the rotary bracket 20 can be achieved.

[0056] Referring to Figure 4 , in one embodiment, the side of the ear shell top cover 60 opposite to the rotary bracket 20 has a positioning groove 63. The position and shape of the positioning groove 63 match those of the connecting post 13, and the third mounting hole 62 is opened at the bottom of the positioning groove 63. After the ear shell top cover 60 is mounted on the ear shell 10, the end of the connecting post 13 is arranged in the positioning groove 63, thereby realizing the positioning between the ear shell 10 and the ear shell top cover 60. At the same time, since the connecting post 13 also passes through the fourth mounting hole 43 on the rotary damping block 40 and the first mounting hole 22 on the rotary bracket 20, after the ear shell top cover 60 and the connecting post 13 are connected by the ear shell fastener 61, the rotary damping block 40 and the rotary bracket 20 located between the ear shell top cover 60 and the bottom of the second mounting groove 12 can also be well fixed. Optionally, the side of the ear shell top cover 60 opposite to the rotary bracket 20 has a counterbore, and the ear shell fastener 61 is a screw. The head of the ear shell fastener 61 is arranged in the counterbore, thereby improving the aesthetics of the head-mounted earphone.

[0057] In some embodiments, referring to Figure 10 and Figure 7 , the side of the rotary damping block 40 opposite to the rotary bracket 20 has a first positioning structure 44, and the side of the rotary bracket 20 opposite to the rotary damping block 40 has a second positioning structure 23 corresponding to the first positioning structure 44. The first positioning structure 44 and the second positioning structure 23 cooperate to realize the positioning connection between the rotary damping block 40 and the rotary bracket 20, thereby ensuring the relative positions among the connecting section 32, the rotary damping block 40 and the rotary bracket 20. Optionally, one of the first positioning structure 44 and the second positioning structure 23 is a positioning groove, and the other is a positioning block. The positioning block is inserted into the positioning groove to realize positioning by means of plugging. For example, in one implementation manner, referring to Figure 10 and Figure 7 , the first positioning structure 44 includes a positioning groove, and the second positioning structure 23 includes a positioning block.

[0058] In some embodiments, referring to Figures 4 - 9 , the connecting section 32 has a damping shaft section 322, a stop shaft section 323, a transition shaft section 324, and a limit shaft section 325 arranged in sequence along the extending direction of the sliding arm 30. The damping shaft section 322 is located at the end of the sliding arm 30 and is inserted into the rotary damping hole 41. The diameter of the stop shaft section 323 is larger than that of the damping shaft section 322 and the transition shaft section 324. The stop shaft section 323 is clamped between the rotary damping block 40 and the rotary bracket 20, which can prevent the rotary bracket 20 from shifting along the sliding arm 30 and prevent the ear shell 10 from shaking relative to the sliding arm 30. The second rotary limit structure is the limit groove 321 and is arranged on the limit shaft section 325. The rotary bracket 20 is provided with a first mounting groove 21. The first mounting groove 21 has a positioning groove section 211, a contraction groove section 212, and a stop block groove section 213 arranged in sequence along the extending direction of the sliding arm 30. At least part of the stop shaft section 323 is arranged in the positioning groove section 211, and the limit convex block 214 protrudes from the stop block groove section 213. The distance between the opposite two side walls of the first mounting groove 21 is reduced at the contraction groove section 212 to form a stepped structure. The transition shaft section 324 is arranged in the contraction groove section 212. Due to the smaller width of the contraction groove section 212, the stop shaft section 323 is blocked by the stepped structure formed between the contraction groove section 212 and the positioning groove section 211 to achieve axial fixation. The opening of the first mounting groove 21 is opened laterally on the rotary bracket 20, and the sliding arm 30 can be inserted into the first mounting groove 21 from the opening of the first mounting groove 21, which is convenient for assembly.

[0059] For the rotary structure of the embodiment of the present utility model, by connecting the rotary bracket 20 to the ear shell 10, a first rotary limit structure is arranged on the rotary bracket 20, and a second rotary limit structure is arranged on the sliding arm 30 connected to the head beam body 50. The second rotary limit structure cooperates with the first rotary limit structure to limit the rotation range of the ear shell 10 relative to the sliding arm 30. Thus, by arranging the rotary limit structure on the sliding arm 30 of the head-mounted earphone, the structure is simple, convenient for assembly, and has good strength. At the same time, this setting method allows the ear shell 10 to have a larger rotation range. Moreover, in the embodiment of the present utility model, a rotary damping block 40 is arranged at one end of the rotary bracket 20 to contact the connecting section 32 to provide damping during the rotation of the sliding arm 30 relative to the rotary bracket 20. Therefore, a good adjustment feel and angle positioning effect can be obtained.

[0060] In some application scenarios, the length of the head-mounted earphone is adjustable to meet the needs of users with different head shapes. Optionally, the sliding section 31 of the sliding arm 30 is telescopically connected to the head beam main body 50. By adjusting the length of the sliding arm 30 exposed from the head beam main body 50, the length of the head-mounted earphone can be conveniently adjusted. To implement the length adjustment of the head-mounted earphone, an embodiment of the present utility model also provides a pulling structure for the head-mounted earphone, which will be specifically described below in conjunction with the accompanying drawings.

[0061] Referring to Figures 1 - 2 and Figures 12 - 18 , the pulling structure includes a head beam main body 50, a sliding arm 30, and a pulling damping block 70. Among them, the sliding arm 30 can be the sliding arm 30 described in the above rotation structure embodiment. The sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence, where the connecting section 32 is connected to the ear shell 10, and the sliding section 31 is slidably connected to the head beam main body 50.

[0062] The head beam main body 50 includes a head beam housing 51 and two head beam end caps 52. Each head beam end cap 52 is respectively arranged at a corresponding end of the head beam housing 51 and is connected to the head beam housing 51 through a head beam fastener 53. The head beam fastener 53 can be a screw, a bolt, a pin, or other fasteners suitable for connecting the head beam housing 51 and the head beam end cap 52. Optionally, the head beam fastener 53 is selected as a detachable fastener, which is convenient for maintenance.

[0063] The head beam housing 51 has a slideway 511, and the sliding section 31 of the sliding arm 30 is slidably arranged in the slideway 511. The head beam end cap 52 has a sliding arm through hole 521, and the slideway 511 is communicated with the sliding arm through hole 521, and the sliding arm 30 passes through the sliding arm through hole 521.

[0064] The pulling damping block 70 is arranged in the head beam main body 50 and abuts against the side surface of the sliding section 31 to provide damping when the sliding section 31 slides along the slideway 511. When the user pulls out the sliding arm 30 by a certain length for wearing, the damping provided by the pulling damping block 70 can stabilize the sliding arm 30 at this position, achieving the length positioning effect. Similar to the rotation damping block 40, the pulling damping block 70 can be made of any material that can provide damping by squeezing the sliding arm 30. For example, wear-resistant silica gel, wear-resistant rubber, or other wear-resistant composite materials can be selected.

[0065] Optionally, referring to Figure 12, the telescoping structure further includes a spring wire 80 received in the head beam housing 51. The spring wire 80 has a fixed portion 81 and a free end 82. The fixed portion 81 is fixedly connected to the head beam housing 51, and the free end 82 is connected to the sliding section 31. The spring wire 80 is a stretchable cable formed by curling or folding. The elastic force of the spring wire 80 can assist the sliding arm 30 to retract into the head beam main body 50 for reset, and provide a certain feedback force during the process of the user pulling out the sliding arm 30, having a better operating feel. There can be one spring wire 80, where the fixed portion 81 is provided in the middle of the spring wire 80, and the fixed portion 81 can be fixed at the middle position of the head beam housing 51; both ends of the spring wire 80 are free ends 82, and the free ends 82 are connected to the sliding arm 30. When the sliding section 31 is pulled out of the head beam main body 50, the spring wire 80 is stretched. Optionally, a main board is provided in each ear cup 10 for controlling the operation of the speaker unit in the ear cup 10. The free end 82 of the spring wire 80 passes through the hollow structure inside the sliding arm 30, so that the spring wire 80 passes into the ear cup 10 and is electrically connected to the main board provided in the ear cup 10.

[0066] Referring to Figure 17 and Figure 18 , the end of the head beam housing 51 has a damping block receiving hole 512, and the telescoping damping block 70 is at least partially received in the damping block receiving hole 512. The size of the damping block receiving hole 512 matches the telescoping damping block 70 to achieve the positioning of the telescoping damping block 70. Optionally, the head beam end cap 52 at least partially covers the damping block receiving hole 512 to protect the telescoping damping block 70.

[0067] Optionally, referring to Figure 16 , the telescoping damping block 70 has a damping groove 71. The sliding section 31 is disposed in the damping groove 71 and contacts the side wall of the damping groove 71. The notch of the damping groove 71 is opposite to the side wall of the damping block receiving hole 512. The sliding section 31 can be conveniently snapped into the damping groove 71 from the notch of the damping groove 71, and then the telescoping damping block 70 can be inserted into the damping block receiving hole 512, thereby improving the convenience of assembly.

[0068] In one embodiment, further, referring to Figure 14 、 Figures 17 - 18, the damping block accommodation hole 512 has an inclined wall hole section 5121 which gradually contracts from one end close to the sliding arm perforation 521 to the other end far from the sliding arm perforation 521, forming a structure similar to a funnel. When the pulling damping block 70 is arranged in the damping block accommodation hole 512, the outer side wall of the pulling damping block 70 is extruded by the inclined wall hole section 5121. The sliding arm 30 has a tendency to contract into the head beam main body 50 under the action of the elastic force of the spring wire 80. The frictional force between the sliding arm 30 and the pulling damping block 70 drives the pulling damping block 70 to move in a direction away from the sliding arm perforation 521. Since the damping groove 71 is an open structure and the notch of the damping groove 71 faces the side wall of the damping block accommodation hole 512, the inclined wall hole section 5121 extrudes the pulling damping block 70, ensuring that the side wall of the damping groove 71 can be tightly attached to the sliding section 31 to provide damping. Further, when the sliding arm 30 is pulled out by a certain length by the user, the damping of the pulling damping block 70 to the sliding section 31 can achieve the length positioning effect of the head-mounted earphone, preventing the sliding arm 30 from retracting arbitrarily during operation.

[0069] In some embodiments, referring to Figure 12 , the head beam housing 51 includes an upper housing 513 and a lower housing 514 which are connected to each other. The upper housing 513 and the lower housing 514 enclose an internal cavity for accommodating the spring wire 80 and at least a part of the sliding section 31. The head beam housing 51 forms a structure similar to a "U" shape. The upper housing 513 has a main body part 5131 and an extension part 5132. The main body part 5131 is arranged on the upper side of the lower housing 514, and the main body part 5131 and the lower housing 514 can be fastened and fixed to each other. The extension part 5132 is arranged at the end of the main body part 5131 and extends inwardly (i.e., the inner side of the "U" shape structure), and the extension part 5132 is connected to the end of the lower housing 514. The damping block accommodation hole 512 can be arranged in the extension part 5132, and the head beam end cap 52 covers the outside of the extension part 5132 to protect the pulling damping block 70.

[0070] Optionally, as Figure 14 shown, the extension part 5132 has a first head beam mounting hole 5133 which penetrates the bottom of the end cap positioning groove 5134, and the end of the lower housing 514 has a second head beam mounting hole 5141 corresponding to the first head beam mounting hole 5133. As Figure 15As shown, on the side of the head beam end cap 52 opposite to the extension part 5132, there is a convex end cap positioning block 522. The end cap positioning block 522 has a third head beam mounting hole 523, and the third head beam mounting hole 523 corresponds to the first head beam mounting hole 5133 and the second head beam mounting hole 5141. The extension part 5132 also has an end cap positioning groove 5134. The shape and position of the end cap positioning groove 5134 match those of the end cap positioning block 522, so that the end cap positioning block 522 can be inserted into the end cap positioning groove 5134 for positioning. The head beam fastener 53 passes through the third head beam mounting hole 523, the first head beam mounting hole 5133, and the second head beam mounting hole 5141 to connect the head beam end cap 52, the upper housing 513, and the lower housing 514.

[0071] In some embodiments, referring to Figure 18 , the head beam housing 51 has a first stop surface 515, and the sliding section 31 has a clamping platform 311. The first stop surface 515 is disposed opposite to the clamping platform 311. The first stop surface 515 is configured to cooperate with the clamping platform 311 to limit the maximum length of the sliding section 31 exposed from the head beam main body 50. The sliding section 31 also has a fixing groove 312, and the sliding track 511 has an elastic bump 5111 corresponding to the fixing groove 312. The fixing groove 312 is disposed close to the clamping platform 311. When the elastic bump 5111 engages with the fixing groove 312, the extended length of the sliding arm 30 can be positioned. Optionally, when the fixing groove 312 is connected to the elastic bump 5111, the clamping platform 311 is away from the first stop surface 515, and the sliding arm 30 can be limited to a shorter extended length. For example, when the fixing groove 312 is connected to the elastic bump 5111, the extended length of the sliding arm 30 is close to or equal to the shortest value, which can prevent the ear cup 10 from directly colliding with the head beam main body 50, and at the same time avoid the sliding arm 30 from arbitrarily extending when the head-mounted earphone is in a storage state with a smaller length.

[0072] In some embodiments, referring to Figure 17 , the sliding section 31 has a second stop surface 313. The second stop surface 313 is disposed opposite to the outer end surface of the head beam end cap 52, and is used to limit the shortest length of the sliding section 31 retracting into the head beam main body 50, so as to avoid the ear cup 10 directly colliding with the head beam main body 50. Optionally, when the second stop surface 313 abuts against the outer end surface of the head beam end cap 52, the elastic bump 5111 is connected to the fixing groove 312, and the head-mounted earphone can be conveniently positioned at a shorter length, which is convenient for the storage of the head-mounted earphone.

[0073] Referring to Figure 13, the bottom of the slideway 511 has an avoidance groove 5112, and the extending direction of the avoidance groove 5112 is parallel to the sliding direction of the sliding section 31, which is used to avoid the clamping platform 311 when the sliding arm 30 slides along the slideway 511, and the clamping platform 311 is arranged in the avoidance groove 5112. Optionally, the first stop surface 515 is a side wall of the avoidance groove 5112.

[0074] Referring to Figure 16 , the inner wall of the damping groove 71 has a raised portion 72, and the extending direction of the raised portion 72 intersects with the sliding direction of the sliding section 31. For example, optionally, the raised portion 72 is perpendicular to the sliding direction of the sliding section 31. Thus, the raised portion 72 can form a relatively tight contact with the side surface of the sliding section 31 to provide relatively stable damping.

[0075] In the pull-out structure of the embodiment of the present utility model, by arranging the slideway 511 in the head beam housing 51, the end of the head beam housing 51 has a damping block accommodation hole 512, the sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence, the connecting section 32 is slidably arranged in the slideway 511, and the pull-out damping block 70 is at least partially accommodated in the damping block accommodation hole 512 and abuts against the side surface of the sliding section 31 to provide damping when the sliding section 31 slides along the slideway 511. Thus, the pull-out structure of the head-mounted earphone is simple in assembly, firm and reliable, and can provide relatively balanced damping during the process of adjusting the length.

[0076] In the head-mounted earphone of the embodiment of the present utility model, by reusing the sliding arm 30, the sliding arm 30 has both the function of rotational limit and the function of adjusting the length of the head-mounted earphone, reducing the number of components, making the overall structure of the head-mounted earphone relatively simple, facilitating assembly, and at the same time being beneficial to improving the reliability of the overall structure of the head-mounted earphone.

[0077] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating structure for a head-mounted earphone, characterized in that, The rotating structure includes: An ear shell (10); A rotating bracket (20) connected to the ear shell (10), and the rotating bracket (20) has a first rotation limiting structure; A sliding arm (30) having a sliding section (31) and a connecting section (32) connected in sequence. The sliding section (31) is telescopically connected to the head beam main body (50) of the head-mounted earphone. The connecting section (32) has a second rotation limiting structure, and the second rotation limiting structure cooperates with the first rotation limiting structure to limit the rotation range of the rotating bracket (20) and the ear shell (10) relative to the sliding arm (30); and A rotation damping block (40) is provided at one end of the rotating bracket (20) and connected to the rotating bracket (20). The rotation damping block (40) has a rotation damping hole (41). The connecting section (32) is inserted into the rotation damping hole (41) and is in interference fit with the rotation damping hole (41). The rotation damping block (40) also has an adjustment groove (42), and the adjustment groove (42) penetrates the side wall of the rotation damping hole (41). The inner wall of the rotation damping hole (41) contacts the connecting section (32) to provide damping during the rotation of the sliding arm (30) relative to the rotating bracket (20).

2. The rotating structure according to claim 1, characterized in that, The connecting section (32) has a damping shaft section (322), a stop shaft section (323), a transition shaft section (324), and a limiting shaft section (325) arranged in sequence along the extension direction of the sliding arm (30). The damping shaft section (322) is inserted into the rotation damping hole (41). The diameter of the stop shaft section (323) is larger than that of the damping shaft section (322) and the transition shaft section (324). The stop shaft section (323) is clamped between the rotation damping block (40) and the rotating bracket (20). The second rotation limiting structure is provided on the limiting shaft section (325).

3. The rotating structure according to claim 2, wherein The second rotation limiting structure is a limiting groove (321). The limiting groove (321) extends along the circumferential direction of the limiting shaft section (325). The limiting groove (321) has a first limiting wall (3211) and a second limiting wall (3212) arranged oppositely along the circumferential direction of the limiting shaft section (325); The first rotation limiting structure is a limiting convex block (214). The limiting convex block (214) is provided in the limiting groove (321) and is configured to move between the first limiting wall (3211) and the second limiting wall (3212); The rotating bracket (20) is provided with a first mounting groove (21). The first mounting groove (21) has a positioning groove section (211), a contraction groove section (212), and a stop block groove section (213) arranged in sequence along the extending direction of the sliding arm (30). At least a part of the stop shaft section (323) is arranged in the positioning groove section (211). The limiting convex block (214) protrudes from the stop block groove section (213). The distance between two opposite side walls of the first mounting groove (21) is reduced at the contraction groove section (212). The transition shaft section (324) is arranged in the contraction groove section (212).

4. The rotating structure according to claim 1, wherein The second rotation limiting structure is a limiting groove (321). The limiting groove (321) extends along the circumferential direction of the connecting section (32). The limiting groove (321) has a first limiting wall (3211) and a second limiting wall (3212) arranged oppositely along the circumferential direction of the connecting section (32). The first rotation limiting structure is a limiting convex block (214). The limiting convex block (214) is arranged in the limiting groove (321) and is configured to move between the first limiting wall (3211) and the second limiting wall (3212).

5. The rotating structure according to claim 3 or 4, characterized in that, The limiting groove (321) has a stop end face (3213). The stop end face (3213) is arranged oppositely to the top surface of the limiting convex block (214) to limit the axial movement of the rotating bracket (20) along the sliding arm (30).

6. The rotating structure according to claim 1, wherein The rotating bracket (20) has a first mounting hole (22). The first mounting hole (22) is arranged at an interval from the first rotation limiting structure. The ear shell (10) has a second mounting hole (11) corresponding to the position of the first mounting hole (22). The rotating structure further includes an ear shell fastener (61). The ear shell fastener (61) passes through the first mounting hole (22) and the second mounting hole (11) to connect the rotating bracket (20) and the ear shell (10).

7. The rotating structure according to claim 6, wherein The ear shell (10) has a second mounting groove (12). The rotating bracket (20) and the rotating damping block (40) are fixed in the second mounting groove (12).

8. The rotating structure according to claim 7, wherein The rotating structure further includes: An ear shell top cover (60) is arranged on one side of the rotating bracket (20) away from the bottom of the second mounting groove (12) and at least partially covers the opening of the second mounting groove (12). The ear shell top cover (60) has a third mounting hole (62) corresponding to the position of the first mounting hole (22). The ear shell fastener (61) also passes through the third mounting hole (62) to connect the ear shell top cover (60), the rotating bracket (20), and the ear shell (10).

9. The rotating structure according to claim 8, wherein, The rotating damping block (40) has a fourth mounting hole (43). A connecting column (13) protrudes from the bottom of the second mounting groove (12). The second mounting hole (11) is arranged on the connecting column (13). The connecting column (13) passes through the fourth mounting hole (43) and the first mounting hole (22) and is arranged oppositely to the ear shell top cover (60).

10. The rotating structure according to claim 9, wherein, One side of the auricle top cover (60) opposite to the rotary bracket (20) has a positioning groove (63), the end of the connecting column (13) is arranged in the positioning groove (63), and the third mounting hole (62) is opened at the bottom of the positioning groove (63).

11. The rotating structure according to claim 1, characterized in that, One side of the rotary damping block (40) opposite to the rotary bracket (20) has a first positioning structure (44), and one side of the rotary bracket (20) opposite to the rotary damping block (40) has a second positioning structure (23) corresponding to the first positioning structure (44); Wherein, one of the first positioning structure (44) and the second positioning structure (23) is a positioning groove, and the other is a positioning block, and the positioning block is inserted into the positioning groove.

12. A head-mounted earphone, characterized in that, Comprising: Two rotary structures according to any one of claims 1-11; And A head beam main body (50), and one of the rotary structures is respectively arranged at both ends of the head beam main body (50); Wherein, the sliding section (31) is telescopically connected to the head beam main body (50).

Images