Hinge structure and headphone

Abstract

The invention provides a hinge structure and a headphone. The hinge structure comprises a hinge assembly and an elastic limiting assembly. The fixed end of the hinge assembly is used for being fixedly connected with the end of a head band beam, the hinge end of the hinge assembly is used for being hinged to the hinge end of an earmuff structure, and the hinge end of the hinge assembly is used for penetrating through a hinge hole in the hinge end of the earmuff structure and extending into the earmuff structure. The wave-shaped elastic piece and the friction limiting pad are sequentially arranged at the hinged end of the hinged assembly in a sleeving mode, the friction limiting pad is used for being fixed to the hinged end of the earmuff structure, and the two side faces of the wave-shaped elastic piece elastically abut against the friction limiting pad and the end of the hinged end of the hinged assembly respectively; an annular limiting rolling groove is formed in the side face, close to the wave-shaped elastic piece, of the friction limiting pad, at least three balls are contained and limited in the annular limiting rolling groove, and the balls are evenly distributed on the friction limiting pad. According to the hinge structure, the service life of the headphone can be prolonged, the use convenience of the headphone can be improved, and the use experience of a user can be improved.

Description

Technical Field

[0001] This disclosure relates to the technical field of headphones, and in particular to a hinge structure and headphones. Background Technology

[0002] Currently available over-ear headphones typically have earcups that directly cover the outer edges of the ears, exerting continuous pressure on the skin of the corresponding facial area. Because this pressure acts on the soft tissues of the ears and face for extended periods, users often experience discomfort such as ear soreness and facial pain after prolonged wear. In some situations, the pressure may even impair local blood circulation, further exacerbating discomfort and significantly reducing the overall user experience of over-ear headphones.

[0003] To address the aforementioned technical issues of poor fit and discomfort, some manufacturers have conducted targeted research and development. For example, existing patent CN103945296A proposes a type of over-ear headphone whose structure includes a headband body, a hanging frame body, a hinge body disposed at both ends of the headband body and used to connect to the hanging frame body, an ear cup body connected to the hanging frame body, and an ear tip body assembled on the ear cup body. The hinge body consists of a hinge pivot and a hinge sleeve fitted onto the hinge pivot. The hinge pivot further includes a shaft, a wave spring, a friction plate, a lower pivot bracket connected to the hanging frame body, and an upper pivot bracket connected to the headband body. The upper end of the shaft is sequentially fitted with the wave spring, the friction plate, and the lower pivot bracket, and all of these components are assembled and connected to the upper pivot bracket. The wave spring, the friction plate, and the lower pivot bracket abut against each other and can all rotate around the shaft. Compared to traditional headphones, this solution achieves a better fit between the ear cup body and the user's face by rotating the ear cup body around its axis and utilizing the inherent frictional damping of the structure, thus improving the fit problem to some extent.

[0004] However, the aforementioned existing technical solutions still have significant drawbacks: the two sides of the wave spring in the headphones press against the shaft and friction plate respectively through their elastic properties, resulting in high pressure at the crests of the wave spring and the shaft. This leads to significant friction between the crests of the wave spring and the shaft when the shaft rotates relative to the wave spring. On the one hand, during long-term use, this high friction will accelerate the wear of the shaft and the wave spring, directly shortening the product's lifespan. On the other hand, when the shaft rotates relative to the wave spring, excessive frictional resistance can easily generate abnormal noise, which will interfere with the user's auditory experience. As wear intensifies, the noise problem will further worsen, ultimately significantly reducing the user's overall experience. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a hinge structure and headphones that can not only improve the service life and ease of use of headphones, but also enhance the user experience.

[0006] The purpose of this disclosure is achieved through the following technical solution: A hinge structure is used for mounting between the earcup structure of a headset and the headband of the headset, the hinge structure including a hinge assembly and an elastic limiting assembly. The fixed end of the hinge assembly is used to be fixedly connected to the end of the headband, the hinge end of the hinge assembly is used to be hinged to the hinge end of the earmuff structure, and the hinge end of the hinge assembly is used to pass through the hinge hole of the hinge end of the earmuff structure and extend into the earmuff structure, and the hinge end of the hinge assembly is used to be rotatably connected to the hinge hole. The elastic limiting component is disposed between the hinge end of the hinge assembly and the hinge end of the earmuff structure. The elastic limiting component includes a wave-shaped spring and a friction limiting pad. The wave-shaped spring and the friction limiting pad are sequentially sleeved on the hinge end of the hinge assembly. The friction limiting pad is fixed to the hinge end of the earmuff structure. The two sides of the wave-shaped spring elastically abut against the friction limiting pad and the hinge end of the hinge assembly, respectively. A ring is formed on one side of the friction limiting pad adjacent to the wave-shaped spring. The annular limiting rolling groove is provided, avoiding the wave spring, and surrounding the hinge end of the hinge assembly. The annular limiting rolling groove accommodates and limits at least three balls, which are evenly distributed on the friction limiting pad. Each ball rolls against the inner wall of the annular limiting rolling groove, and each ball extends out of the annular limiting rolling groove and rolls against the end of the hinge end of the hinge assembly. The height of each ball extending out of the annular limiting rolling groove is greater than the thickness of the wave spring.

[0007] In one embodiment, the hinge assembly includes a hinge bracket and a hinge limiting member. The hinge end of the hinge bracket is used to pass through the hinge hole of the earmuff structure and is rotatably connected to the hinge hole. The connecting end of the hinge limiting member is fixedly connected to the hinge end of the hinge bracket. The limiting end of the hinge limiting member is used to limit its installation within the earmuff structure and is positioned opposite to the hinge end of the earmuff structure. The wave spring and the friction limiting pad are sequentially sleeved on the hinge end of the hinge bracket and positioned between the hinge end of the earmuff structure and the limiting end of the hinge limiting member. The crest of the wave spring elastically abuts against the limiting end of the hinge limiting member, and each ball rolls against the limiting end of the hinge limiting member.

[0008] In one embodiment, the connecting end of the hinge limiting member is detachably and fixedly connected to the hinge end of the hinge bracket.

[0009] In one embodiment, the end face of the hinge end of the hinge bracket is formed with a threaded hole, the fixed end of the hinge bracket is used to fix it to the end of the headband beam, the connecting end of the hinge limiting member is formed with a threaded abutment surface adapted to the threaded hole, and the connecting end of the hinge limiting member is threadedly connected to the threaded hole.

[0010] In one embodiment, annular anti-detachment flanges are formed on both inner walls of the annular limiting rolling groove opening. The width between the two annular anti-detachment flanges is smaller than the diameter of the ball, and the vertical distance from the side of the annular anti-detachment flange facing the annular limiting rolling groove to the bottom of the annular limiting rolling groove is greater than the radius of the ball, so as to limit the ball within the annular limiting rolling groove. The vertical distance from the opening of the annular limiting rolling groove to the bottom of the annular limiting rolling groove is smaller than the diameter of the ball, so that the ball partially extends out of the annular limiting rolling groove.

[0011] In one embodiment, a rolling gap is formed between the outer wall of the ball and the inner walls of both sides of the annular limiting rolling groove and the annular anti-detachment flange.

[0012] In one embodiment, the outer peripheral wall of the limiting end of the hinge limiting member is formed with an annular limiting flange, which is used to be disposed opposite to the hinge end of the earmuff structure. The wave-shaped spring is disposed between the friction limiting pad and the annular limiting flange. The two sides of the wave-shaped spring elastically abut against the friction limiting pad and the limiting end of the hinge limiting member, respectively, and each of the ball bearings rolls against the annular limiting flange.

[0013] In one embodiment, a positioning groove is formed on one side of the friction limiting pad adjacent to the wave spring. The number of positioning grooves is the same as the number of troughs of the wave spring. The plurality of positioning grooves are provided in one-to-one correspondence with the plurality of troughs of the wave spring, and each trough of the wave spring is embedded in the corresponding positioning groove.

[0014] In one embodiment, the fixed end of the hinge assembly is formed with a shaped limiting flange that is adapted to the shaped limiting groove at the end of the headband beam, the shaped limiting flange being used to be embedded and fixed in the shaped limiting groove.

[0015] A headset includes an earcup structure, a headband, and a hinge structure as described in any of the above embodiments. The hinge structure is installed between the earcup structure and the headband. The fixed end of the hinge assembly is fixedly connected to the end of the headband. The hinge end of the hinge assembly is hinged to the hinge end of the earcup structure, and the hinge end of the hinge assembly passes through a hinge hole in the hinge end of the earcup structure and is rotatably connected to the hinge hole.

[0016] Compared with the prior art, this disclosure has at least the following advantages: 1. In the aforementioned hinge structure, the elastic limiting component is positioned between the hinge end of the hinge assembly and the hinge end of the earmuff structure. The elastic limiting component includes a wave-shaped spring and a friction limiting pad. The wave-shaped spring and the friction limiting pad are sequentially sleeved on the hinge end of the hinge assembly. The friction limiting pad is fixed to the hinge end of the earmuff structure. The two sides of the wave-shaped spring elastically abut against the friction limiting pad and the hinge end of the hinge assembly, respectively, so that the friction limiting pad can limit the wave-shaped spring, preventing any movement when the earmuff structure causes the elastic limiting component to rotate relative to the hinge end of the hinge assembly. The phenomenon of the corrugated spring rotating relative to the friction limiting pad; an annular limiting rolling groove is formed on one side of the friction limiting pad adjacent to the corrugated spring, and the annular limiting rolling groove is set away from the corrugated spring and surrounds the hinge end of the hinge assembly. The annular limiting rolling groove accommodates and limits at least three balls, which are evenly distributed on the friction limiting pad. Each ball rolls and abuts against the inner wall of the annular limiting rolling groove, and each ball partially extends out of the annular limiting rolling groove and rolls and abuts against the end of the hinge end of the hinge assembly. The height of each ball extending out of the annular limiting rolling groove is greater than the thickness of the corrugated spring, so that the balls can be separated. The pressure applied to the hinge end of the partial hinge assembly is reduced to decrease the pressure on the wave spring. This allows the elastic limiting component to convert some of the sliding friction between itself and the hinge end of the hinge assembly into rolling friction via ball bearings. As the earcup structure rotates the elastic limiting component relative to the hinge end of the hinge assembly, the ball bearings significantly reduce the proportion of sliding friction, greatly reducing the frictional resistance between the wave spring and the hinge end of the hinge assembly. This, in turn, significantly reduces the overall frictional resistance between the wave spring and the hinge end of the hinge assembly. The headphones described above, in particular, offer a smoother and less strenuous experience when rotating the earcup structure relative to the headband, and prevent excessive frictional resistance between the wave spring and the hinge end of the hinge assembly, which could cause abnormal noise. Furthermore, the earcup structure can be positioned using elastic frictional damping between the wave spring and the hinge end of the hinge assembly, ensuring stable holding of the earcup structure after angle adjustment relative to the headband. This effectively conforms to different user face shapes, significantly improving the lifespan, ease of use, and user experience of the headphones disclosed herein.

[0017] 2. Because the balls are evenly distributed on the friction limiting pad, they can form a multi-point support structure with a uniform circumference. This structure works in conjunction with the elastic preload of the wave spring to suppress radial movement of the hinge assembly, ensuring stable rotation of the earcup structure and greatly improving the rotational stability of the headphones. At the same time, the annular limiting rolling groove can also guide and limit the rolling of the balls, allowing them to roll along the guiding direction of the annular limiting rolling groove when rolling relative to the friction limiting pad. This prevents the balls from leaving the gap between the elastic limiting assembly and the hinge end of the hinge assembly, thus ensuring the stability of the headphones during use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a headset according to one embodiment; Figure 2 for Figure 1 A schematic diagram of a partial structure of the headphones shown; Figure 3 for Figure 2 A schematic diagram of the internal structure of the headphones shown; Figure 4 for Figure 3 A partially enlarged schematic diagram of the headphones shown; Figure 5 for Figure 3 Another enlarged schematic diagram of the headset shown; Figure 6 This is a partial structural diagram of a hinge structure according to one embodiment; Figure 7 This is a partial structural diagram of a hinged structure according to one embodiment; Figure 8 This is another partial structural schematic diagram of a hinge structure according to one embodiment; Figure 9 This is another partial structural schematic diagram of a hinge structure according to one embodiment; Figure 10 This is a schematic diagram of the structural model of the hinged structure.

[0020] Reference numerals: Headphones 10; Hinge structure 100; Hinge assembly 110; Hinge bracket 111; Threaded hole 1111; Irregularly shaped limiting flange 1112; Hinge limiting component 112; Threaded contact surface 1121; Annular limiting flange 1122; Elastic limiting assembly 120; Wave spring 121; Wave crest 1211; Wave trough 1212; Friction limiting pad 122; Annular limiting rolling groove 1221; Anti-detachment flange 1222; Positioning groove 1223; Ball bearing 123; Earcup structure 200; Hinge hole 210; Headband 300; Irregularly shaped limiting groove 310. Detailed Implementation

[0021] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 10As shown, in one embodiment, a hinge structure 100 is used to be installed between the earcup structure 200 and the headband 300 of a headset 10. The hinge structure 100 includes a hinge assembly 110 and an elastic limiting assembly 120. The fixed end of the hinge assembly 110 is fixedly connected to the end of the headband 300, and the hinge end of the hinge assembly 110 is hinged to the hinge end of the earcup structure 200. The hinge end of the hinge assembly 110 passes through the hinge hole 210 of the hinge end of the earcup structure 200 and extends into the earcup structure 200. The hinge end of the hinge assembly 110 is rotatably connected to the hinge hole 210. The elastic limiting assembly 120 is disposed at the end of the hinge end of the hinge assembly 110 and the hinge hole 210. Between the hinge ends of the earmuff structure 200, the elastic limiting component 120 includes a wave-shaped spring sheet 121 and a friction limiting pad 122. The wave-shaped spring sheet 121 and the friction limiting pad 122 are sequentially sleeved on the hinge end of the hinge component 110. The friction limiting pad 122 is used to fix the earmuff structure 200 to the hinge end. The two sides of the wave-shaped spring sheet 121 elastically abut against the friction limiting pad 122 and the end of the hinge end of the hinge component 110, respectively. An annular limiting rolling groove 1221 is formed on one side of the friction limiting pad 122 adjacent to the wave-shaped spring sheet 121. The annular limiting rolling groove 1221 is set away from the wave-shaped spring sheet 121 and surrounds the hinge end of the hinge component 110. The annular limiting rolling groove 1221 accommodates and limits at least three Ball bearings 123 are evenly distributed on the friction limiting pad 122. Each ball bearing 123 rolls against the inner wall of the annular limiting rolling groove 1221. Each ball bearing 123 extends out of the annular limiting rolling groove 1221 and rolls against the end of the hinge end of the hinge assembly 110. The height of each ball bearing 123 extending out of the annular limiting rolling groove 1221 is greater than the thickness of the wave spring 121, so that the ball bearing 123 can share part of the pressure applied to the wave spring 121 by the end of the hinge end of the hinge assembly 110, thereby reducing the pressure on the wave spring 121. This allows the elastic limiting assembly 120 to convert part of the sliding friction between itself and the end of the hinge end of the hinge assembly 110 into rolling friction through the ball bearings 123. Friction is achieved by rotating the earcup structure 200 relative to the hinge end of the hinge assembly 110, thereby significantly reducing the proportion of sliding friction through the ball bearing 123. This greatly reduces the frictional resistance between the wave spring 121 and the hinge end of the hinge assembly 110, and consequently greatly reduces the overall frictional resistance between the wave spring 121 and the hinge end of the hinge assembly 110. Compared with the headphones in the aforementioned related technologies, the headphones 10 of this disclosure are smoother and less strenuous when rotating the earcup structure 200 relative to the headband 300, and can avoid abnormal noise caused by excessive frictional resistance between the wave spring 121 and the hinge end of the hinge assembly 110.Meanwhile, the earcup structure 200 can also be positioned by the elastic friction damping between the wave spring 121 and the hinge end of the hinge assembly 110, so that the earcup structure 200 can be stably maintained after adjusting the angle relative to the headband 300, thereby effectively fitting different users' face shapes and significantly improving the service life, ease of use, and user experience of the headset 10 disclosed herein.

[0025] like Figures 1 to 10 As shown, the balls 123 are evenly distributed on the friction limiting pad 122, so that the balls 123 can form a circumferentially distributed multi-point support structure, and cooperate with the elastic preload of the wave spring 121 to suppress the radial movement of the hinge assembly 110, ensuring that the earcup structure 200 can rotate stably, thereby greatly improving the rotational stability of the headphone 10; at the same time, the annular limiting rolling groove 1221 can also guide and limit the rolling of the balls 123, so that when the balls 123 roll relative to the friction limiting pad 122, the balls 123 can roll along the guiding direction of the annular limiting rolling groove 1221, preventing the balls 123 from leaving the gap between the elastic limiting assembly 120 and the hinge end of the hinge assembly 110, thereby ensuring the stability of the headphone 10 in use.

[0026] The aforementioned hinge structure 100, in which the elastic limiting component 120 is disposed between the hinge end of the hinge assembly 110 and the hinge end of the earmuff structure 200, includes a wave-shaped spring sheet 121 and a friction limiting pad 122. The wave-shaped spring sheet 121 and the friction limiting pad 122 are sequentially sleeved on the hinge end of the hinge assembly 110. The friction limiting pad 122 is fixed to the hinge end of the earmuff structure 200. The two sides of the wave-shaped spring sheet 121 elastically abut against the friction limiting pad 122 and the hinge end of the hinge assembly 110, respectively, so that the friction limiting pad 122 can limit the wave-shaped spring sheet 121, preventing the earmuff structure 200 from moving the elastic limiting component 120 relative to the hinge end of the hinge assembly 110. When the end of the device rotates, the wave spring 121 rotates relative to the friction limiting pad 122. An annular limiting rolling groove 1221 is formed on one side of the friction limiting pad 122 adjacent to the wave spring 121. The annular limiting rolling groove 1221 is positioned away from the wave spring 121 and surrounds the hinge end of the hinge assembly 110. The annular limiting rolling groove 1221 accommodates and limits at least three balls 123. The balls 123 are evenly distributed on the friction limiting pad 122. Each ball 123 rolls against the inner wall of the annular limiting rolling groove 1221. Each ball 123 partially extends out of the annular limiting rolling groove 1221 and rolls against the end of the hinge end of the hinge assembly 110. The height of ball bearing 123 is greater than the thickness of wave spring 121, so that ball bearing 123 can share part of the pressure applied to wave spring 121 by the hinge end of hinge assembly 110, thereby reducing the pressure on wave spring 121. This allows the elastic limiting component 120 to convert some of the sliding friction with the hinge end of hinge assembly 110 into rolling friction through ball bearing 123. This significantly reduces the proportion of sliding friction when the earmuff structure 200 rotates the elastic limiting component 120 relative to the hinge end of hinge assembly 110, greatly reducing the frictional resistance between wave spring 121 and the hinge end of hinge assembly 110, and consequently greatly reducing the frictional resistance between wave spring 121 and hinge assembly 110. Compared to the headphones in the aforementioned related technologies, the overall frictional resistance between the ends of the hinges in this disclosure results in a smoother and less effortful rotation of the earcup structure 200 relative to the headband 300. It also prevents excessive frictional resistance between the wave spring 121 and the hinge end of the hinge assembly 110, which could cause abnormal noise. Furthermore, the earcup structure 200 can be positioned using the elastic frictional damping between the wave spring 121 and the hinge end of the hinge assembly 110, ensuring stable holding of the earcup structure 200 after angle adjustment relative to the headband 300. This effectively conforms to different user face shapes, significantly improving the lifespan, ease of use, and user experience of the headphones 10 disclosed herein.

[0027] Furthermore, since the balls 123 are evenly distributed on the friction limiting pad 122, they can form a circumferentially distributed multi-point support structure. This structure works in conjunction with the elastic preload of the wave spring 121 to suppress radial movement of the hinge assembly 110, ensuring that the earcup structure 200 can rotate stably. This greatly improves the rotational stability of the headphone 10. At the same time, the annular limiting rolling groove 1221 can also guide and limit the rolling of the balls 123. When the balls 123 roll relative to the friction limiting pad 122, they can roll along the guiding direction of the annular limiting rolling groove 1221, preventing the balls 123 from leaving the gap between the elastic limiting assembly 120 and the hinge end of the hinge assembly 110. This ensures the stability of the headphone 10 during use.

[0028] like Figures 3 to 9 As shown, in one embodiment, the hinge assembly 110 includes a hinge bracket 111 and a hinge limiting member 112. The hinge end of the hinge bracket 111 is used to pass through the hinge hole 210 of the earmuff structure 200 and is rotatably connected to the hinge hole 210. The connecting end of the hinge limiting member 112 is fixedly connected to the hinge end of the hinge bracket 111. The limiting end of the hinge limiting member 112 is used to limit its installation within the earmuff structure 200, and the limiting end of the hinge limiting member 112 is arranged opposite to the hinge end of the earmuff structure 200. A wave spring 121 and a friction limiting pad 122 are sequentially sleeved on the hinge end of the hinge bracket 111 and are used to be disposed between the hinge end of the earmuff structure 200 and the limiting end of the hinge limiting member 112. The crest portion 1211 of the earcup elastically abuts against the limiting end of the hinge limiting member 112, and each ball 123 rolls against the limiting end of the hinge limiting member 112, so that the hinge end of the hinge bracket 111 is limited to the hinge hole 210 by the limiting end of the hinge limiting member 112, preventing the hinge end of the hinge bracket 111 from coming out of the hinge hole 210. At the same time, the earcup structure 200 can also be positioned by the elastic friction damping between the limiting end of the hinge limiting member 112 and the wave spring 121, so that the earcup structure 200 can be stably maintained after the angle of adjustment relative to the headband 300, so that the earcup structure 200 can effectively fit the face shape of different users, thereby greatly improving the stability of the use of the headphone 10 and the user's experience.

[0029] like Figure 7 As shown, in one embodiment, the wave spring 121 is a stainless steel wave spring 121, so that the wave spring 121 can have better elastic properties and structural strength.

[0030] like Figure 4 and Figure 9As shown, in one embodiment, the connecting end of the hinge limiting member 112 is detachably and fixedly connected to the hinge end of the hinge bracket 111, so as to facilitate the installation and disassembly of the hinge limiting member 112 and the hinge bracket 111. This not only greatly reduces the difficulty of maintenance and replacement of the hinge structure 100, but also facilitates the installation and disassembly between the headband beam 300 and the earcup structure 200, thereby greatly improving the maintenance convenience of the headphone 10.

[0031] like Figure 4 and Figure 9 As shown, in one embodiment, the hinge end of the hinge bracket 111 has a threaded hole 1111 formed on its end face. The fixed end of the hinge bracket 111 is used to fix it to the end of the headband beam 300. The connecting end of the hinge limiting member 112 has a threaded abutment surface 1121 that is adapted to the threaded hole 1111. The connecting end of the hinge limiting member 112 is threaded into the threaded hole 1111. This not only allows the hinge limiting member 112 to be securely fixed to the hinge bracket 111, but also greatly reduces the difficulty of installation and disassembly between the hinge limiting member 112 and the hinge bracket 111, thereby greatly improving the stability of use and the convenience of maintenance of the headphone 10.

[0032] like Figure 4 and Figure 9 As shown, in one embodiment, a removable thread-locking adhesive block (not shown) is filled between the outer peripheral wall of the connecting end of the hinge limiting member 112 and the hole wall of the threaded hole 1111. This ensures that the hinge limiting member 112 and the hinge bracket 111 are detachable, while also making the connecting end of the hinge limiting member 112 more securely fixed in the threaded hole 1111. This improves the locking reliability between the hinge limiting member 112 and the hinge bracket 111, preventing the hinge limiting member 112 from loosening or even falling off under the influence of external factors such as vibration and collision, thereby greatly improving the stability of the headset 10. In this embodiment, the specific effect of the removable thread-locking adhesive block is prior art and will not be described in detail here.

[0033] like Figures 4 to 7As shown, in one embodiment, annular anti-detachment flanges 1222 are formed on both inner walls of the annular limiting rolling groove 1221 at the groove opening. The width between the two annular anti-detachment flanges 1222 is less than the diameter of the ball 123, and the vertical distance between the side of the annular anti-detachment flange 1222 facing the annular limiting rolling groove 1221 and the bottom of the annular limiting rolling groove 1221 is greater than the radius of the ball 123, so as to limit the ball 123 within the annular limiting rolling groove 1221; the vertical distance between the groove opening of the annular limiting rolling groove 1221 and the bottom of the annular limiting rolling groove 1221 is less than... The diameter of the ball 123 is such that a portion of the ball 123 extends out of the annular limiting rolling groove 1221. This not only ensures that the ball 123 is securely contained within the annular limiting rolling groove 1221 to prevent it from coming out, but also allows the ball 123 to share the pressure on the crest portion 1211 of the wave spring 121, thereby reducing the compressive force between the crest portion 1211 of the wave spring 121 and the annular limiting flange 1122, and further reducing the frictional resistance between the crest portion 1211 of the wave spring 121 and the limiting end of the hinged limiting member 112.

[0034] like Figure 6 As shown, in one embodiment, the ball 123 is a stainless steel ball 123 so that the ball 123 can have better structural strength.

[0035] like Figures 4 to 7 As shown, in one embodiment, a rolling gap (not shown) is formed between the outer wall of the ball 123 and the inner walls on both sides of the annular limiting rolling groove 1221 and the annular anti-detachment flange 1222. This gap provides more space for the ball 123 to roll, preventing motion interference between the ball 123 and the inner walls on both sides of the annular limiting rolling groove 1221 and the annular anti-detachment flange 1222. This also prevents the ball 123 from getting stuck and reduces the rolling friction resistance of the ball 123. This allows the ball to adapt to temperature changes and ensure the rolling stability of the ball 123. As a result, the earcup structure 200 can rotate stably relative to the headband 300, thereby greatly improving the stability of the headphones 10.

[0036] like Figures 4 to 7 As shown, in one embodiment, the rolling gap is 0.01mm to 0.03mm.

[0037] like Figures 4 to 7As shown, in one embodiment, the outer peripheral wall of the limiting end of the hinge limiting member 112 is formed with an annular limiting flange 1122. The annular limiting flange 1122 is arranged opposite to the hinge end of the earcup structure 200. The wave spring 121 is disposed between the friction limiting pad 122 and the annular limiting flange 1122. The two sides of the wave spring 121 elastically abut against the friction limiting pad 122 and the limiting end of the hinge limiting member 112, respectively. Each ball 123 rolls against the annular limiting flange 1122, so that the limiting end of the hinge limiting member 112 can be stably limited within the earcup structure 200 under the combined action of the rigid support of the ball 123 and the elastic support of the wave spring 121. This greatly improves the rotational stability of the earcup structure 200, thereby greatly improving the stability of the use of the headphone 10.

[0038] like Figures 4 to 6 As shown, in one embodiment, the diameter of the annular limiting flange 1122 is larger than the diameter of the hinge hole 210 to prevent the limiting end of the hinge limiting member 112 from coming out of the earcup structure 200, thereby ensuring the reliable connection between the headband 300 and the earcup structure 200 and greatly improving the stability of the headphones 10 in use.

[0039] like Figures 4 to 7 As shown, in one embodiment, a positioning groove 1223 is formed on one side of the friction limiting pad 122 adjacent to the wave spring 121. The number of positioning grooves 1223 is the same as the number of troughs 1212 of the wave spring 121. The multiple positioning grooves 1223 are arranged one-to-one with the multiple troughs 1212 of the wave spring 121. Each trough 1212 of the wave spring 121 is embedded in the corresponding positioning groove 1223, so that the wave spring 121 can be more securely positioned at the preset position of the friction limiting pad 122, suppressing the phenomenon of relative rotation of the wave spring 121 relative to the friction limiting pad 122. This ensures that the wave spring 121 can provide damping force for the positioning of the earcup structure 200, so that the earcup structure 200 can be stably maintained after the angle of adjustment relative to the headband 300, thereby effectively fitting the face shape of different users and significantly improving the service life, ease of use and user experience of the headphone 10 disclosed herein.

[0040] like Figures 4 to 9 As shown, in one embodiment, the fixed end of the hinge assembly 110 is formed with a shaped limiting flange 1112 that is adapted to the shaped limiting groove 310 at the end of the headband 300. The shaped limiting flange 1112 is used to be embedded and fixed in the shaped limiting groove 310 to improve the limiting reliability between the fixed end of the hinge assembly 110 and the headband 300, and to prevent the fixed end of the hinge assembly 110 from rotating relative to the headband 300, thereby greatly improving the stability of the use of the headphones 10.

[0041] It is understandable that if the ball bearings 123 slip when the earcup structure 200 rotates relative to the headband 300, the ball bearings 123 will not be able to achieve balanced force distribution through multiple points, thereby weakening the radial support effect on the limiting end of the elastic limiting component 120 and the hinge limiting component 112, causing slight swaying when the earcup structure 200 rotates, greatly reducing the rotational stability of the earcup structure 200, and thus affecting the overall stability of the headphones 10.

[0042] like Figures 4 to 7 As shown, in one embodiment, the bottom of the annular limiting rolling groove 1221 is formed with a first friction limiting surface (not shown), and the annular limiting flange 1122 is formed with a second friction limiting surface (not shown) opposite to the annular limiting rolling groove 1221. The ball 123 abuts against the first friction limiting surface and the second friction limiting surface respectively to increase the frictional resistance between the ball 123 and the bottom of the annular limiting rolling groove 1221 and the limiting end of the hinge limiting member 112, suppress the slippage of the ball 123, ensure that the ball 123 can maintain a multi-point uniformly distributed force state, avoid the slight movement of the earmuff structure 200 when rotating, and thus greatly improve the rotational stability of the earmuff structure 200.

[0043] like Figures 4 to 7 As shown, in one embodiment, an annular limiting flange 1122 has an annular limiting groove (not shown) formed on one side adjacent to the friction limiting pad 122, which is opposite to the annular limiting rolling groove 1221. A second friction limiting surface is formed at the bottom of the annular limiting groove, so that when the ball 123 rolls relative to the friction limiting pad 122, the annular limiting groove and the annular limiting rolling groove 1221 can cooperate with each other to guide the ball 123 to roll along the guiding direction, thereby preventing the ball 123 from leaving the gap between the end of the elastic limiting component 120 and the hinge end of the hinge component 110, and thus improving the stability of the headphones 10 in use.

[0044] like Figures 4 to 7 As shown, in one embodiment, the cross-section of the annular limiting groove is an arc-shaped structure to increase the contact area between the ball 123 and the annular limiting groove. This not only increases the frictional resistance between the ball 123 and the annular limiting flange 1122 and suppresses the slippage of the ball 123, but also effectively reduces the stress concentration of the ball 123, thereby greatly improving the stability of the headphones 10.

[0045] This disclosure also provides a headset 10, including an earcup structure 200, a headband 300, and a hinge structure 100 as described in any of the above embodiments. The hinge structure 100 is installed between the earcup structure 200 and the headband 300. The fixed end of the hinge assembly 110 is fixedly connected to the end of the headband 300, and the hinge end of the hinge assembly 110 is hinged to the hinge end of the earcup structure 200. The hinge end of the hinge assembly 110 passes through the hinge hole 210 of the hinge end of the earcup structure 200 and is rotatably connected to the hinge hole 210.

[0046] Compared with the prior art, this disclosure has at least the following advantages: 1. In the aforementioned over-ear headphones 10, the elastic limiting component 120 is disposed between the hinge end of the hinge assembly 110 and the hinge end of the earcup structure 200. The elastic limiting component 120 includes a wave spring 121 and a friction limiting pad 122. The wave spring 121 and the friction limiting pad 122 are sequentially sleeved on the hinge end of the hinge assembly 110. The friction limiting pad 122 is fixed to the hinge end of the earcup structure 200. The two sides of the wave spring 121 elastically abut against the friction limiting pad 122 and the hinge end of the hinge assembly 110, respectively, so that the friction limiting pad 122 can limit the wave spring 121 and prevent the earcup structure 200 from driving the elastic limiting component 120 relative to the hinge assembly 110. When the end of the hinge rotates, the wave spring 121 rotates relative to the friction limiting pad 122. An annular limiting rolling groove 1221 is formed on one side of the friction limiting pad 122 adjacent to the wave spring 121. The annular limiting rolling groove 1221 is positioned away from the wave spring 121 and surrounds the hinge end of the hinge assembly 110. The annular limiting rolling groove 1221 accommodates and limits at least three balls 123. The balls 123 are evenly distributed on the friction limiting pad 122. Each ball 123 rolls against the inner wall of the annular limiting rolling groove 1221. Each ball 123 partially extends out of the annular limiting rolling groove 1221 and rolls against the end of the hinge end of the hinge assembly 110. The height of 21 is greater than the thickness of the wave spring 121, so that the ball 123 can share part of the pressure applied to the wave spring 121 by the hinge end of the hinge assembly 110, thereby reducing the pressure on the wave spring 121. This allows the elastic limiting assembly 120 to convert part of the sliding friction with the hinge end of the hinge assembly 110 into rolling friction through the ball 123. As a result, when the earmuff structure 200 drives the elastic limiting assembly 120 to rotate relative to the hinge end of the hinge assembly 110, the ball 123 can significantly reduce the proportion of sliding friction, thereby greatly reducing the frictional resistance between the wave spring 121 and the hinge end of the hinge assembly 110, and thus greatly reducing the frictional resistance between the wave spring 121 and the hinge assembly 110. Compared to the headphones in the aforementioned related technologies, the headphones 10 of this disclosure offer a smoother and less effortful rotation of the earcup structure 200 relative to the headband 300, and can prevent abnormal noise caused by excessive frictional resistance between the wave spring 121 and the hinge end of the hinge assembly 110. At the same time, the earcup structure 200 can also be positioned by the elastic frictional damping between the wave spring 121 and the hinge end of the hinge assembly 110, so that the earcup structure 200 can be stably maintained after the angle of adjustment relative to the headband 300, thereby effectively fitting different users' face shapes and significantly improving the service life, ease of use, and user experience of the headphones 10 of this disclosure.

[0047] 2. Since the balls 123 are evenly distributed on the friction limiting pad 122, they can form a circumferentially distributed multi-point support structure. This structure works in conjunction with the elastic preload of the wave spring 121 to suppress the radial movement of the hinge assembly 110, ensuring that the earcup structure 200 can rotate stably. This greatly improves the rotational stability of the headphone 10. At the same time, the annular limiting rolling groove 1221 can also guide and limit the rolling of the balls 123. When the balls 123 roll relative to the friction limiting pad 122, they can roll along the guiding direction of the annular limiting rolling groove 1221, preventing the balls 123 from leaving the gap between the elastic limiting assembly 120 and the hinge end of the hinge assembly 110. This ensures the stability of the headphone 10 in use.

[0048] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A hinged structure for mounting between the earcup structure of a headset and the headband of the headset, characterized in that, The hinge structure includes a hinge assembly and an elastic limiting assembly; The fixed end of the hinge assembly is used to be fixedly connected to the end of the headband, the hinge end of the hinge assembly is used to be hinged to the hinge end of the earmuff structure, and the hinge end of the hinge assembly is used to pass through the hinge hole of the hinge end of the earmuff structure and extend into the earmuff structure, and the hinge end of the hinge assembly is used to be rotatably connected to the hinge hole. The elastic limiting component is disposed between the hinge end of the hinge assembly and the hinge end of the earmuff structure. The elastic limiting component includes a wave-shaped spring and a friction limiting pad. The wave-shaped spring and the friction limiting pad are sequentially sleeved on the hinge end of the hinge assembly. The friction limiting pad is fixed to the hinge end of the earmuff structure. The two sides of the wave-shaped spring elastically abut against the friction limiting pad and the hinge end of the hinge assembly, respectively. A ring is formed on one side of the friction limiting pad adjacent to the wave-shaped spring. The annular limiting rolling groove is provided, avoiding the wave spring, and surrounding the hinge end of the hinge assembly. The annular limiting rolling groove accommodates and limits at least three balls, which are evenly distributed on the friction limiting pad. Each ball rolls against the inner wall of the annular limiting rolling groove, and each ball extends out of the annular limiting rolling groove and rolls against the end of the hinge end of the hinge assembly. The height of each ball extending out of the annular limiting rolling groove is greater than the thickness of the wave spring.

2. The hinge structure according to claim 1, characterized in that, The hinge assembly includes a hinge bracket and a hinge limiting member. The hinge end of the hinge bracket is used to pass through the hinge hole of the earmuff structure and is rotatably connected to the hinge hole. The connecting end of the hinge limiting member is fixedly connected to the hinge end of the hinge bracket. The limiting end of the hinge limiting member is used to limit its installation inside the earmuff structure and is positioned opposite to the hinge end of the earmuff structure. The wave spring and the friction limiting pad are sequentially sleeved on the hinge end of the hinge bracket and are positioned between the hinge end of the earmuff structure and the limiting end of the hinge limiting member. The crest of the wave spring elastically abuts against the limiting end of the hinge limiting member, and each ball rolls against the limiting end of the hinge limiting member.

3. The hinge structure according to claim 2, characterized in that, The connecting end of the hinge limiting member is detachably and fixedly connected to the hinge end of the hinge bracket.

4. The hinge structure according to claim 3, characterized in that, The hinge end of the hinge bracket has a threaded hole formed on its end face. The fixed end of the hinge bracket is used to fix it to the end of the headband beam. The connecting end of the hinge limiting member has a threaded abutment surface that matches the threaded hole. The connecting end of the hinge limiting member is threadedly connected to the threaded hole.

5. The hinge structure according to claim 1, characterized in that, Annular anti-detachment flanges are formed on both inner walls of the annular limiting rolling groove opening. The width between the two annular anti-detachment flanges is smaller than the diameter of the ball, and the vertical distance from the side of the annular anti-detachment flange facing the annular limiting rolling groove to the bottom of the annular limiting rolling groove is greater than the radius of the ball, so as to limit the ball within the annular limiting rolling groove. The vertical distance from the opening of the annular limiting rolling groove to the bottom of the annular limiting rolling groove is smaller than the diameter of the ball, so that the ball partially extends out of the annular limiting rolling groove.

6. The hinge structure according to claim 5, characterized in that, A rolling gap is formed between the outer wall of the ball and the inner walls of both sides of the annular limiting rolling groove and the annular anti-detachment flange.

7. The hinge structure according to claim 5, characterized in that, The outer peripheral wall of the limiting end of the hinge limiting member is formed with an annular limiting flange. The annular limiting flange is used to be arranged opposite to the hinge end of the earmuff structure. The wave-shaped spring is disposed between the friction limiting pad and the annular limiting flange. The two sides of the wave-shaped spring elastically abut against the friction limiting pad and the limiting end of the hinge limiting member, respectively, and each of the ball bearings rolls against the annular limiting flange.

8. The hinge structure according to claim 1, characterized in that, The friction limiting pad has a positioning groove formed on one side adjacent to the wave spring. The number of positioning grooves is the same as the number of troughs of the wave spring. The multiple positioning grooves are arranged one-to-one with the multiple troughs of the wave spring, and each trough of the wave spring is embedded in the corresponding positioning groove.

9. The hinge structure according to claim 1, characterized in that, The fixed end of the hinge assembly is formed with a shaped limiting flange that is adapted to the shaped limiting groove at the end of the headband beam. The shaped limiting flange is used to be embedded and fixed in the shaped limiting groove.

10. A type of over-ear headphone, characterized in that, The device includes an earmuff structure, a headband, and a hinge structure as described in any one of claims 1 to 9. The hinge structure is installed between the earmuff structure and the headband. The fixed end of the hinge assembly is fixedly connected to the end of the headband. The hinge end of the hinge assembly is hinged to the hinge end of the earmuff structure, and the hinge end of the hinge assembly passes through the hinge hole of the hinge end of the earmuff structure and is rotatably connected to the hinge hole.

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