Headphones

Abstract

This utility model relates to a head-mounted device, specifically a headphone. The headphone includes a headband, earcups, and an adjustment assembly. The adjustment assembly includes a rotating shaft and a sleeve. The sleeve connects to the headband, and the end of the rotating shaft opposite to the headband connects to the earcup. The rotating shaft is movably inserted into the sleeve along its axial direction. The rotating shaft has at least two shaft segments with different diameters. The sleeve has a telescopic structure arranged radially along the rotating shaft, and a portion of the sleeve slidably presses against the circumferential outer wall of the rotating shaft, and can respectively press against the two shaft segments. According to this utility model, by providing rotating shafts with different diameters and telescopic sleeves that cooperate with the rotating shafts, the earcup rotation resistance can be adjusted. Users can manually operate the earcups to obtain suitable rotation resistance according to their own wearing experience, thus improving wearing comfort.

Description

Technical Field

[0001] This utility model relates to a head-mounted device, specifically a headphone. Background Technology

[0002] Existing headphones typically feature a rotating structure at the connection between the earcups and the headband, allowing the earcups to be slightly adjusted to fit the user's head shape for improved fit and comfort. However, the rotational force (i.e., the resistance required for the earcups to rotate) of such structures is usually preset and fixed, and cannot be adjusted according to individual user differences.

[0003] Because different users have significantly different head shapes and pressure sensitivities, a fixed rotational force setting may cause some users to experience either too much or too little resistance when wearing the headphones. On the one hand, excessive resistance will make it difficult for users to adjust the earcup angle and may even cause pressure on the head; on the other hand, insufficient resistance may cause the earcups to easily deflect during use, affecting the stability of the fit and the consistency of the sound, both of which will reduce the wearing experience of the headphones. Utility Model Content

[0004] The purpose of this invention is to at least solve the problem that the rotational force in the ear shell rotation structure of existing headphones is not adjustable, making it impossible to adapt to different user head shapes or wearing comfort. This purpose is achieved through the following technical solution:

[0005] This utility model proposes a headset, comprising:

[0006] Headgear;

[0007] Ear covers, which are rotatably connected to the headband;

[0008] An adjustment assembly includes a rotating shaft and a bushing portion. The bushing portion is connected to the headband. One end of the rotating shaft opposite to the headband is connected to the earpiece. The rotating shaft is movably inserted through the bushing portion along its axial direction. The rotating shaft has at least two shaft segments with different diameters. The bushing portion has a telescopic structure arranged radially along the rotating shaft. A portion of the bushing portion is slidably pressed against the circumferential outer wall of the rotating shaft and can respectively press against the two shaft segments.

[0009] According to this invention, the earphones feature adjustable ear cup rotation resistance by incorporating rotating shafts of different diameters and retractable sleeves that engage with these shafts. Users can push or pull the ear cups to change the axial position of the rotating shafts, thereby altering the diameter of the contacted shaft segment. This changes the extension / retraction state of the sleeve, resulting in a change in the friction between the sleeve and the rotating shaft, ultimately achieving adjustable rotational force. This invention enables rapid adjustment of the ear cup rotational force, allowing users to manually adjust the ear cups to obtain suitable rotational resistance based on their own wearing comfort.

[0010] In addition, the headphones according to this utility model may also have the following additional technical features:

[0011] In some embodiments of this utility model, the bushing portion includes a housing, two bushing bodies, and at least two elastic elements. The two bushing bodies and at least two elastic elements are disposed in an installation space formed inside the housing. The housing is connected to the headgear. The two bushing bodies together form a clamping space for the rotating shaft to pass through. The bushing bodies are slidably pressed against the rotating shaft. The elastic elements are arranged radially along the rotating shaft. Each bushing body is provided with at least one elastic element. One end of the elastic element is connected to the bushing body, and the other end of the elastic element is connected to the housing.

[0012] In some embodiments of this utility model, the inner wall of the housing is provided with a limiting groove arranged radially along the rotating shaft, and the bushing body is provided with a limiting protrusion, which is slidably received in the limiting groove.

[0013] In some embodiments of this utility model, the elastic element is a spring, the inner wall of the housing is provided with a positioning post arranged radially along the rotating shaft, the positioning post is spaced apart from the rotating shaft, and the spring is sleeved on the outside of the positioning post.

[0014] In some embodiments of this utility model, the housing includes a first housing and a second housing, the first housing and the second housing are detachably connected, and the first housing and the second housing together form the installation space.

[0015] In some embodiments of this utility model, the headset further includes at least two damping rings, and each shaft segment has an annular groove on its circumferential outer wall, and each shaft segment has a damping ring fitted inside the annular groove.

[0016] In some embodiments of this utility model, the headband has a receiving groove inside, and a first through hole is opened at one end of the headband connected to the adjustment component. The first through hole is connected to the receiving groove, and the end of the rotating shaft away from the ear cover passes through the first through hole and is received in the receiving groove.

[0017] In some embodiments of this utility model, one end of the rotating shaft housed in the receiving groove is provided with a limiting frustum, the diameter of which is larger than the diameter of the first through hole.

[0018] In some embodiments of this utility model, the headset further includes a shaft fixing cover, which is detachably connected to the end of the earcup facing away from the headband. The earcup has a second through hole, and the rotating shaft passes through the second through hole and is detachably connected to the shaft fixing cover.

[0019] In some embodiments of this utility model, the rotating shaft further includes a transition section. Along the axial direction, the transition section is disposed between two adjacent shaft segments, which are respectively a first shaft segment and a second shaft segment. The diameter of the first shaft segment is larger than the diameter of the second shaft segment. Along the direction from the first shaft segment to the second shaft segment, the radial dimension of the transition section gradually decreases. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a headset according to an embodiment of the present invention is shown.

[0022] Figure 2 An exploded view of a headset according to an embodiment of the present invention is shown schematically.

[0023] Figure 3 A schematic diagram of a partially exploded structure of a headset according to an embodiment of the present invention is shown.

[0024] Figure 4 A schematic diagram of the structure of the headphones according to an embodiment of the present invention in a first state is shown.

[0025] Figure 5 A schematic diagram of the structure of the headphones according to an embodiment of the present invention in the second state is shown.

[0026] Figure 6 A schematic diagram of the structure of the rotating shaft according to an embodiment of the present invention is shown;

[0027] Figure 7 A schematic diagram of the structure of a head-mounted body according to an embodiment of the present invention is shown.

[0028] Figure 8 A schematic diagram of the structure of the first housing according to an embodiment of the present invention is shown;

[0029] Figure 9 A schematic diagram of the structure of the second housing according to an embodiment of the present invention is shown;

[0030] Figure 10 An exploded view of the two bushing bodies according to an embodiment of the present invention is shown schematically.

[0031] Figure 11 A schematic diagram of the structure of an ear cover support according to an embodiment of the present invention is shown;

[0032] Figure 12 A schematic diagram of the structure of the shaft fixing cover according to an embodiment of the present invention is shown.

[0033] The attached figures are labeled as follows:

[0034] 100. Headphones;

[0035] 10. Headband component; 11. Headband body; 111. Receiving slot; 112. First through hole; 12. Decorative strip;

[0036] 20. Adjustment assembly; 21. Rotating shaft; 211. First annular groove; 212. Second annular groove; 213. Limiting frustum; 214. Second screw hole; 22. Bushing; 221. Housing; 2211. First housing; 22111. First limiting slide groove; 22112. Positioning pin; 22113. First screw hole; 22114. Snap hole; 2212. Second housing; 22121. Second limiting slide groove; 22122. Snap fastener; 222. Bushing body; 2221. Guide surface; 2222. Limiting protrusion; 2223. Limiting circular groove; 223. Elastic element;

[0037] 30. Ear cover; 31. Bracket; 311. Second through hole; 312. Third screw hole; 32. Ear cup; 40. First damping ring; 41. Second damping ring; 50. Shaft fixing cover; 51. First clearance hole; 52. Second clearance hole; 60. First screw; 61. Second screw; 62. Third screw. Detailed Implementation

[0038] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0040] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0041] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0042] like Figures 1 to 12 As shown, according to an embodiment of this utility model, a headset 100 is proposed, including a headband 10, earcups 30, and an adjustment component 20. The headband 10 is a supporting structure used to mount the earcups 30 and secure them in place. The earcups 30 are designed to fit the user's ears and are connected to the headband 10 by rotation to accommodate different wearing angles. The adjustment component 20 is used to adjust the rotational resistance of the earcups 30 and includes a rotating shaft 21 and a bushing 22. The bushing 22 connects to the headband 10 and defines the rotational and movement space of the rotating shaft 21. The rotating shaft 21 is movably disposed within the bushing 22 (including both vertical movement along the axial direction and rotation along the axial direction). One end (the end closest to the earcup 30) is fixedly connected to the earcup 30, and the other end extends into the headband 10. Along the axial direction of the rotating shaft 21, the rotating shaft 21 has at least two shaft segments with different outer diameters for different contact relationships with the bushing 22.

[0043] In this embodiment, these shaft segments can be cylindrical structures of different diameters, for example, the first shaft segment is a small diameter segment, and the second shaft segment is a large diameter segment. Along the radial direction of the rotating shaft 21, the bushing portion 22 has a telescopic structure arranged radially along the rotating shaft 21, specifically achieving localized radial deformation capability through elastic components or flexible structures. At least a portion of the bushing portion 22 (e.g., its inner wall structure) slidably presses against the outer circumferential surface of the rotating shaft 21, and its deformation state can be automatically adjusted according to changes in the outer diameter of the rotating shaft 21.

[0044] In practical use, when the user pushes or pulls the ear sleeve 30, it causes the rotating shaft 21 to move axially relative to the bushing portion 22. When the rotating shaft 21 is in contact with the bushing portion 22 at its small diameter section, the bushing portion 22 experiences less pressure and generates less friction, resulting in smoother rotation of the ear sleeve 30. When the rotating shaft 21 moves to its large diameter section and contacts the bushing portion 22, the bushing portion 22 is further compressed or tightened, increasing its deformation and friction, thereby increasing the rotational resistance of the ear sleeve 30. This structure does not require electronic control or complex mechanisms; it achieves adjustment of the rotational force of the ear sleeve 30 solely through the structural cooperation between mechanical components, offering advantages such as compact structure, ease of operation, and a good user experience. Of course, the retractable structure of the bushing portion 22 is not limited to the elastic element 223; it can also be replaced by various forms such as flexible rings or deformable silicone sleeves to achieve the same functional effect.

[0045] According to this embodiment of the headphones 100, by providing rotating shafts 21 with different diameters and retractable bushings that cooperate with the rotating shafts 21, the rotational resistance of the earcups 30 is adjustable. Users can push or pull the earcups 30 to change the axial position of the rotating shafts 21, thereby changing the diameter of the contacted shaft segment. This alters the extension / retraction state of the bushing, resulting in a change in the frictional force between the bushing and the rotating shaft 21, ultimately achieving adjustable rotational force. This embodiment enables rapid adjustment of the rotational force of the earcups 30. Users can manually operate the earcups 30 to obtain suitable rotational resistance based on their own wearing experience, improving wearing comfort.

[0046] like Figure 6 As shown, in some embodiments, the number of shaft segments provided along the axial direction of the rotating shaft 21 can be two, namely, a small-diameter shaft segment and a large-diameter shaft segment, to provide two different levels of rotational resistance to meet basic adjustment needs. However, this embodiment is not limited to this. In other optional embodiments, the rotating shaft 21 can be provided with three, four, or more shaft segments with different outer diameters along the axial direction. Each shaft segment can make radial pressing contact with the bushing part 22 to different degrees, thereby realizing multiple levels of rotational resistance adjustment. By setting multiple sets of shaft segments with different outer diameters, users can switch between different shaft segments in contact with the bushing body 222 in sequence during the process of pushing and pulling the ear tips 30, achieving a more delicate and multi-level rotational force adjustment effect, further improving wearing comfort and personalized adaptation capabilities. For example, in a rotating shaft 21 with a three-segment structure, the first shaft segment is the smallest diameter, the second shaft segment is the medium diameter, and the third shaft segment is the largest diameter, corresponding to light, medium, and heavy rotational feel, respectively, suitable for different scenarios or user habits.

[0047] like Figures 3 to 5 As shown, in some embodiments, the bushing portion 22 specifically includes a housing 221, two bushing bodies 222 and at least two elastic elements 223. The housing 221 is integral or multi-segment assembled to define the installation space of the internal structure and connect to the headgear 10. The two bushing bodies 222 are disposed inside the housing 221 and located on both sides of the rotating shaft 21. The at least two elastic elements 223 are respectively disposed between the two bushing bodies 222 and the housing 221.

[0048] The housing 221 is fixedly connected to the headband 10, forming an installation space inside. Two bushing bodies 222 are respectively disposed within this installation space and arranged opposite each other, together forming a clamping space for the rotating shaft 21 to pass through. Both bushing bodies 222 are slidably in contact with the circumferential outer wall of the rotating shaft 21, and can maintain a continuous fit during axial movement according to changes in the outer diameter of the rotating shaft 21. Each elastic element 223 is arranged radially, with one end connected to the bushing body 222 and the other end connected to the inner wall of the housing 221 to provide radial clamping force. Preferably, the elastic element 223 can be a compression spring, a wave spring, or other structure with elastic recovery capability. When the rotating shaft 21 moves axially, its shaft segments of different diameters will contact the bushing bodies 222 and generate different degrees of radial support and pressure. Since the elastic element 223 can provide continuous elastic force, the bushing body 222 can deform in accordance with the change of the outer diameter of the rotating shaft 21, thereby changing the friction between it and the rotating shaft 21 and realizing the dynamic adjustment of the rotational force.

[0049] For example, when the rotating shaft 21 moves to the small diameter shaft section and contacts the bushing body 222, the elastic element 223 is compressed less, the friction is less, and the rotation is smoother. However, when the rotating shaft 21 moves to the large diameter shaft section and contacts the bushing body 222, the elastic element 223 is further compressed, the bushing body 222 is tightened, the friction is increased, and the rotational force is increased.

[0050] Specifically, to facilitate the assembly, maintenance, and component replacement of the adjustment component 20, the housing 221 adopts a detachable structure design. Specifically, the housing 221 includes a first housing 2211 and a second housing 2212, which are combined to form the housing 221 and connected in a detachable manner, such as through snap-fit ​​22122 engagement, threaded connection, screw fastening, or sliding locking. After assembly, the first housing 2211 and the second housing 2212 cooperate to form an installation space. This installation space accommodates the two bushing bodies 222 and at least two elastic elements 223 in the adjustment component 20, forming an internal structural area that limits their movement. During installation, the elastic elements 223 and bushing bodies 222 can be pre-installed into corresponding positions within the first housing 2211, and then the second housing 2212 can be snapped or fixed onto the first housing 2211, completing the closure of the housing 221 and thus forming the entire bushing section 22 structure. This structure also facilitates subsequent disassembly, maintenance, or replacement of the bushing bodies 222 or elastic elements 223.

[0051] Furthermore, to achieve a secure connection between the adjustment component 20 and the headband 10, the first housing 2211 is fixed to the headband 10 by screwing. Specifically, the top surface of the first housing 2211 has two first screw holes 22113, located on either side or symmetrically on both sides of the first housing 2211. The headband 10 has two screw holes corresponding to the first screw holes 22113, which are coaxially aligned with the screw holes on the top surface of the first housing 2211 in the assembled state. During installation, two first screws 60 are screwed into the screw holes of the headband 10 and the first screw holes 22113 of the first housing 2211, respectively, thereby achieving reliable fixation between the first housing 2211 and the headband 10. Through the above structural design, the first housing 2211 in the adjustment component 20 can be firmly installed on the headband 10, ensuring the structural stability of the adjustment component 20 during use, preventing shaking or detachment, and facilitating disassembly and maintenance, thus contributing to modular manufacturing and convenient later maintenance of the product.

[0052] like Figure 8 and Figure 9 As shown, the first housing 2211 is further provided with two locking holes 22114 mirror-imaged along its axis, and the second housing 2212 is provided with two locking buckles 22122 mirror-imaged along its axis. The locking holes 22114 and locking buckles 22122 are located at the opposite connecting edges of the first housing 2211 and the second housing 2212, respectively. During assembly, the user can align the two locking buckles 22122 on the second housing 2212 with the two locking holes 22114 on the first housing 2211 and press them in the axial direction to insert them. After the two locking buckles 22122 are inserted into the locking holes 22114, the elastic structure of the locking buckles 22122 achieves a snap-fit ​​fixation, thereby firmly connecting the first housing 2211 and the second housing 2212 and enclosing them to form the internal installation space. When disassembly is required, the user only needs to compress or move the locking buckles 22122 to disengage them from the locking holes 22114, which allows for quick disassembly and facilitates maintenance or replacement of internal components.

[0053] Specifically, to achieve controllable sliding of the bushing body 222 in the radial direction and prevent its offset or tilting, a guiding and limiting structure is further provided. Specifically, the inner wall of the housing 221 is provided with a limiting groove extending in the radial direction. This limiting groove can be a recessed structure or an embedded structure, used to guide the sliding trajectory of the bushing body 222. A corresponding limiting protrusion 2222 is provided on the bushing body 222. This limiting protrusion 2222 is inserted into the limiting groove and can slide along the direction of the limiting groove. In actual operation, the bushing body 222 undergoes slight deformation or movement in the radial direction under the combined action of the clamping force of the elastic element 223 and the change in the outer diameter of the shaft section of the rotating shaft 21. Through the cooperation of the limiting protrusion 2222 and the groove, the movement of the bushing body 222 is limited only within the predetermined sliding track, effectively preventing abnormal displacements such as lateral offset, tilting, and rotation of the bushing, ensuring that the contact between the bushing body 222 and the rotating shaft 21 remains stable. This embodiment achieves stable guiding sliding of the bushing body 222, ensuring that it only produces controllable displacement in the radial direction, and avoiding irregular movements such as eccentricity and tilting during operation. At the same time, it ensures the smoothness and consistency of the rotational force adjustment process. The bushing body 222 maintains a stable fit with the rotating shaft 21 under stress, making the frictional force output of each gear more consistent and controllable.

[0054] like Figure 8 and Figure 9 As shown, further, the upper wall of the first housing 2211 is provided with a first limiting groove 22111, the lower wall of the second housing 2212 is provided with a second limiting groove 22121, and the top and bottom surfaces of the bushing body 222 are respectively provided with corresponding limiting protrusions 2222. The limiting protrusions 2222 on the top surface of the bushing body 222 are inserted into the first limiting groove 22111, and the limiting protrusions 2222 on the bottom surface are inserted into the second limiting groove 22121. The two limiting grooves provide sliding guidance for the limiting protrusions 2222. During the operation of the adjusting assembly 20, when the rotating shaft 21 moves axially, causing rotational force adjustment, the bushing body 222 slides radially under the elastic force of the elastic element 223. With the above structure, the limiting protrusion 2222 of the bushing body 222 will perform linear guiding motion within the limiting groove, thereby effectively preventing the bushing from swaying left or right or rotating during sliding, and ensuring that it always maintains a good contact posture and fitting accuracy.

[0055] Specifically, in this embodiment, the elastic element 223 is preferably a spring, used to provide radial elastic force between the rotating shaft 21 and the bushing body 222, thereby achieving rotational force adjustment. To ensure reliable installation and stable force distribution of the spring, a positioning post 22112 extending radially is provided on the inner wall of the housing 221. The positioning post 22112 is a columnar protrusion structure located radially outside the rotating shaft 21, spaced apart from the rotating shaft 21 to avoid interfering with its movement path. The spring is sleeved on the positioning post 22112, with one end connected to the inner wall of the housing 221 or the root of the positioning post 22112, and the other end in contact with the bushing body 222. Through the guiding effect of the positioning post 22112, the spring can work stably in the radial direction during compression and release, preventing abnormal deformation such as bending, misalignment, or slippage, ensuring that the bushing body 222 always receives uniform and controllable elastic support in the radial direction. This structure not only simplifies the spring installation method but also improves the overall structure's anti-interference capability and operational reliability.

[0056] like Figure 10 As shown, furthermore, a limiting groove 2223 is formed on the side of the bushing body 222 facing the spring. This limiting groove 2223 is used to accommodate one end of the spring, so that the spring is always kept in a predetermined position during operation. Specifically, one end of the spring is sleeved on the positioning post 22112 on the inner wall of the housing 221, and the other end, that is, the end opposite to the positioning post 22112, is located in the limiting groove 2223. Through this structural design, both ends of the spring form a stable fit with the positioning post 22112 and the bushing body 222 respectively. The spring can deform smoothly in the radial direction during compression or release, avoiding displacement or dislocation. This structure ensures the axial guidance and compression alignment of the spring when under force, and improves the reliability and response consistency of the adjustment component 20 during the rotational force adjustment process.

[0057] Furthermore, to further improve the force balance and structural stability of the bushing body 222 during radial sliding, each bushing body 222 is provided with two or more spaced-apart limiting grooves 2223 for positioning and engaging multiple springs. Specifically, the two limiting grooves 2223 are respectively located on the side of the bushing body 222 facing the spring and are spaced apart. Each limiting groove 2223 is connected to a spring, with one end of the spring located in the limiting groove 2223 and the other end fitted onto the corresponding positioning post 22112 on the inner wall of the housing 221. By providing symmetrical elastic support with two springs, each bushing body 222 can maintain uniform force and stable posture when radially pressed by the rotating shaft 21, effectively preventing bushing tilting, rotation, or offset caused by single-point force. This structure not only improves the structural reliability of the adjustment component 20 but also further enhances the friction control accuracy and user feel consistency during rotational force adjustment.

[0058] In some embodiments, to achieve corresponding rotational friction control on different segments of the rotating shaft 21, the headset 100 further includes at least two damping rings with different diameters for contact friction with the bushing body 222, thereby generating adjustable rotational resistance. Specifically, the rotating shaft 21 has multiple segments with different diameters along its axial direction, and each segment has an annular groove on its circumferential outer wall. The annular groove has a groove structure for installing damping rings. Each annular groove is fitted with a damping ring corresponding to its diameter, i.e., a small-diameter damping ring is installed on the small-diameter segment, and a large-diameter damping ring is installed on the large-diameter segment. When the rotating shaft 21 moves axially, the damping rings of different segments will sequentially enter the mating area with the bushing body 222, contacting the inner wall of the bushing body 222 to generate friction. Due to the different sizes of the damping rings, the contact area and force generated under the compressed state of the bushing are also different, thereby forming multiple levels of rotational resistance and achieving a more refined rotational adjustment experience. This structure also facilitates the replacement and adjustment of the damping ring. Damping rings of different materials or sizes can be replaced according to usage requirements to meet the differentiated requirements for rotation feel, wear life and other performance aspects.

[0059] Specifically, in this embodiment, the rotating shaft 21 has two shaft segments with different diameters arranged sequentially along the axial direction, namely a first shaft segment and a second shaft segment, wherein the first shaft segment is located at the upper part and the second shaft segment is located at the lower part, and the diameter of the first shaft segment is larger than the diameter of the second shaft segment. In order to install damping rings at different shaft segment positions to achieve multi-level rotational force adjustment, a first annular groove 211 is formed on the circumferential outer wall of the first shaft segment, and a second annular groove 212 is formed on the circumferential outer wall of the second shaft segment. The outer diameter of the first annular groove 211 is larger than the outer diameter of the second annular groove 212, matching the size of the corresponding shaft segment. The damping rings include a first damping ring 40 and a second damping ring 41, wherein the first damping ring 40 is disposed in the first annular groove 211 and the second damping ring 41 is disposed in the second annular groove 212. In practical use, when the rotating shaft 21 moves downwards until the first shaft segment enters the bushing mating area, the larger first damping ring 40 contacts the bushing, generating greater friction and thus increasing the rotational resistance of the earpiece 30. Conversely, when the rotating shaft 21 moves upwards, causing the second shaft segment to enter the bushing mating area, the smaller second damping ring 41 contacts the bushing, and the friction decreases accordingly, thereby reducing rotational resistance. By setting two damping rings of different sizes and installing them on shaft segments of different diameters, in conjunction with the axial movement of the rotating shaft 21, two levels of rotational feel adjustment can be achieved, meeting the personalized adjustment requirements of users for rotational resistance under different wearing needs.

[0060] In some embodiments, to reduce the axial space occupied by the adjustment component 20 in the headwear direction and improve structural integration, a receiving structure is provided inside the headwear 10. Specifically, the headwear 10 has a receiving groove 111 inside for embedding and accommodating part of the rotating shaft 21. A first through hole 112 is provided at one end of the headwear 10 that connects to the adjustment component 20, and this through hole communicates with the receiving groove 111. The end of the rotating shaft 21 facing away from the earpiece 30 passes through the first through hole 112 and extends into the receiving groove 111. Therefore, the housing 221 can fit snugly against the headwear 10 for connection, and no axial space needs to be left between the housing 221 and the headwear 10 for the rotating shaft 21 to move.

[0061] Furthermore, to limit the axial movement of the rotating shaft 21, a limiting frustum 213 is provided at one end of the rotating shaft 21 housed in the receiving groove 111. The diameter of the limiting frustum 213 is larger than the diameter of the first through hole 112. When the user pulls the earcup 30 outward, the limiting frustum 213 abuts against the edge of the first through hole 112, thereby forming an axial stop and preventing the rotating shaft 21 from coming out. Through the above structural design, the rotating shaft 21 of the adjustment component 20 is embedded in the headband 10, no longer occupying additional axial space outside the headband 10, effectively compressing the overall length of the adjustment component 20, and improving the compactness and integration of the adjustment function, which helps to reduce the volume of the headphone headband structure.

[0062] In some embodiments, to facilitate the installation, disassembly, and subsequent maintenance of the adjustment component 20, the headset 100 further includes a shaft fixing cover 50, which is used to fix the rotating shaft 21. The shaft fixing cover 50 is detachably connected to the end of the bracket 31 of the earcup 30 opposite to the headband 10, for example, by means of screw connection or screw-in locking. The bracket 31 has a second through hole 311 for the rotating shaft 21 to pass through.

[0063] Specifically, the rotating shaft 21 passes through the second through hole 311, with its end extending to the outside of the earcup 30 and connecting to the shaft fixing cover 50. This connection is also detachable. This method ensures a stable and fixed relationship between the rotating shaft 21 and the earcup 30, and facilitates the removal of the shaft fixing cover 50 when needed, enabling quick replacement of the adjustment component 20 or inspection and maintenance of the internal structure. This structure not only facilitates the modular installation and replacement of the adjustment component 20 but also improves the structural flexibility and maintainability of the headphone 100, making it suitable for mass production and after-sales service needs.

[0064] Specifically, the connection between the rotating shaft 21, the shaft fixing cover 50, and the ear cup 30 bracket 31 is as follows: the bottom of the rotating shaft 21 has two second screw holes 214, and the shaft fixing cover 50 has two second clearance holes 52. The two second screws 61 of the headset 100 pass through the two second clearance holes 52 on the shaft fixing cover 50 and are screwed into the two second screw holes 214, respectively. The shaft fixing cover 50 is fixed to the rotating shaft 21 by the second screws 61. The ear cup 32 has two protrusions facing inward, and the protrusions have third screw holes 312. The first clearance hole 51 and the third screw hole 312 of the shaft fixing cover 50 are arranged opposite to each other, and the third screw 62 is screwed into the third screw hole 312. Therefore, the shaft fixing cover 50 and the bracket 31 are connected.

[0065] In some embodiments, to facilitate smoother switching between shaft segments of different diameters and reduce jamming or impact on the bushing body 222 during radial sliding, the shaft 21 also includes a transition structure between adjacent shaft segments. Specifically, the shaft 21 has a transition section between the first and second shaft segments. This transition section is sloped (i.e., its radial dimension gradually decreases along the direction from the first to the second shaft segment), and its outer diameter gradually changes along the axial direction, forming a sloped structure that smoothly transitions from a larger diameter to a smaller diameter. This sloped transition section not only eliminates the right-angle step difference between shaft segments, preventing the bushing body 222 from being subjected to instantaneous impact during the axial movement of the shaft 21, but also guides the bushing body 222 to achieve continuous and stable radial sliding and engagement, thereby improving the consistency of the feel of the rotational force adjustment and the structural durability. Furthermore, this transition section can be designed as a straight slope, a circular arc surface, or a combination of curved surfaces as needed to adapt to different elastic response characteristics and friction adjustment requirements.

[0066] In some embodiments, to improve the fit and contact stability between the bushing body 222 and the damping ring, the side of the bushing body 222 that contacts the damping ring is designed as an arc-shaped guide surface 2221. Specifically, the inner side of the bushing body 222, that is, the side that directly contacts the damping ring disposed in the annular groove of the rotating shaft 21, has an arc-shaped profile in its cross-section or radial profile. This arc-shaped guide surface 2221 can be a circular arc surface, an elliptical arc, or other smoothly transitioned curved surface. By designing the contact surface as arc-shaped, the damping ring can be evenly stressed and fully fitted along the arc surface under compression, effectively improving the stability of frictional contact and avoiding uneven friction, local wear, or structural shaking caused by point contact or line contact. At the same time, the arc-shaped structure can also alleviate stress concentration during the compression process, extend the service life of the damping ring and the bushing, and improve the smoothness and consistency of the rotational force adjustment process.

[0067] In some embodiments, to improve the smoothness of the insertion process between the bushing body 222 and the damping ring and reduce scratching wear during assembly, the structural edge of the bushing body 222 facing the damping ring is optimized. Specifically, the top and bottom edges of the bushing body 222 facing the damping ring are respectively provided with rounded chamfer structures. This rounded chamfer can be a circular arc transition edge of a certain radius, forming a structural feature of smooth arc transition from the outer wall of the bushing body 222 to the inner side. By setting the rounded chamfer, the damping ring can smoothly transition into the contact position when it is axially or radially assembled into the bushing body 222, avoiding scratches, jamming, or local compression due to sharp edges, thereby improving assembly efficiency and product yield. At the same time, during the rotation of the ear sleeve 30, when the damping ring is finely adjusted axially with the rotating shaft 21, the rounded chamfer structure can also reduce the sudden change in local resistance in the initial contact stage, enhancing the smoothness and linear response of the adjustment feel.

[0068] Specifically, the headband 10 includes a headband body 11 and a decorative strip 12. The headband body 11 is the main load-bearing structure of the headband 10, used to connect the left and right adjustment components 20 to the ear tips 30. The decorative strip 12 is located on the outer surface or inside of the headband body 11, used to conceal structural details such as screws and seams, while enhancing the overall appearance and visual appeal of the headphones. The decorative strip 12 can be installed on the headband body 11 using methods such as clips 22122, adhesive, or sliding rails, and is detachable for easy maintenance or replacement.

[0069] The earcup 30 includes a support 31 and an ear cup 32 fitted onto the support 31. The support 31 is a rigid structure connecting the pivot 21 and the ear cup 32, providing support and limiting. The ear cup 32 is located on the outside of the support 31 to fit the user's ear, improving wearing comfort and noise isolation. The ear cup 32 can be made of flexible materials such as sponge, leather, or silicone, and can be replaced according to usage habits.

[0070] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A headset, characterized in that, include: Headgear; Ear covers, which are rotatably connected to the headband; An adjustment assembly includes a rotating shaft and a bushing portion. The bushing portion is connected to the headband. One end of the rotating shaft opposite to the headband is connected to the earpiece. The rotating shaft is movably inserted through the bushing portion along its axial direction. The rotating shaft has at least two shaft segments with different diameters. The bushing portion has a telescopic structure arranged radially along the rotating shaft. A portion of the bushing portion is slidably pressed against the circumferential outer wall of the rotating shaft and can respectively press against the two shaft segments.

2. The headphones according to claim 1, characterized in that, The bushing portion includes a housing, two bushing bodies, and at least two elastic elements. The two bushing bodies and at least two elastic elements are disposed within an installation space formed inside the housing. The housing is connected to the headgear. The two bushing bodies together form a clamping space for the rotating shaft to pass through. The bushing bodies are slidably pressed against the rotating shaft. The elastic elements are arranged radially along the rotating shaft. Each bushing body is provided with at least one elastic element. One end of the elastic element is connected to the bushing body, and the other end of the elastic element is connected to the housing.

3. The headphones according to claim 2, characterized in that, The inner wall of the housing is provided with a limiting groove arranged radially along the rotating shaft, and the bushing body is provided with a limiting protrusion, which is slidably received in the limiting groove.

4. The headphones according to claim 2, characterized in that, The elastic element is a spring, and the inner wall of the housing is provided with a positioning post arranged radially along the rotating shaft. The positioning post is spaced apart from the rotating shaft, and the spring is sleeved on the outside of the positioning post.

5. The headphones according to claim 2, characterized in that, The housing includes a first housing and a second housing, which are detachably connected and together form the installation space.

6. The headphones according to any one of claims 1 to 5, characterized in that, The headset also includes at least two damping rings, and each shaft segment has an annular groove on its circumferential outer wall, and each shaft segment has a damping ring fitted inside the annular groove.

7. The headphones according to any one of claims 1 to 5, characterized in that, The headband has a receiving groove inside, and a first through hole is opened at one end of the headband that connects to the adjustment component. The first through hole is connected to the receiving groove, and the end of the rotating shaft that is away from the ear cover passes through the first through hole and is received in the receiving groove.

8. The headphones according to claim 7, characterized in that, The rotating shaft is housed in the receiving groove at one end and is provided with a limiting frustum. The diameter of the limiting frustum is larger than the diameter of the first through hole.

9. The headphones according to any one of claims 1 to 5, characterized in that, The headphones also include a shaft fixing cover, which is detachably connected to the end of the earcup facing away from the headband. The earcup has a second through hole, through which the rotating shaft passes and is detachably connected to the shaft fixing cover.

10. The headphones according to any one of claims 1 to 5, characterized in that, The rotating shaft also includes a transition section. Along the axial direction, the transition section is located between two adjacent shaft segments, which are a first shaft segment and a second shaft segment, respectively. The diameter of the first shaft segment is larger than the diameter of the second shaft segment. Along the direction from the first shaft segment to the second shaft segment, the radial dimension of the transition section gradually decreases.

Images