Ear muff and earphone

Abstract

The application provides ear caps and earphones. The ear cap comprises an ear cap body, the ear cap body comprises an inner peripheral wall and an outer peripheral wall distributed around a reference axis, the inner peripheral wall surrounds a first through hole penetrating along the reference axis, the inner peripheral wall and the outer peripheral wall are annularly and spacedly arranged along the radial direction of the reference axis, and an accommodation cavity is formed between the inner peripheral wall and the outer peripheral wall. According to different requirements, the accommodation cavity can accommodate sound insulation gas, temperature sensing fluid or a light emitting structure. When the sound insulation gas is equipped, the ear cap body is connected with a gas valve assembly, the gas valve assembly has an open state and a closed state, in the open state, the sound insulation gas can be introduced into the accommodation cavity, in the closed state, the accommodation cavity is closed, and the air pressure in the accommodation cavity is maintained stable. The ear cap and the earphone can better adhere to the skin, the sound insulation effect is better, and the noise reduction performance of the earphone is improved.

Description

Technical Field

[0001] This application relates to the field of headphones, specifically to an earcup and headphones. Background Technology

[0002] The earcups of over-ear headphones need to fit snugly against the area around the ears to ensure comfort and sound isolation. Currently, the industry mainly uses foam to fill the earcups, making them soft and deformable to achieve a snug fit. However, foam is a type of foam material, and its density and hardness are difficult to control precisely. This instability can negatively affect the frequency response curve and passive noise cancellation curve of the headphones, hindering the improvement of noise cancellation performance. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, based on the current difficulty in improving the noise cancellation performance of headphones, this application proposes an earcup that, by filling the main body of the earcup with sound-insulating gas, can effectively reduce the sound wave resonance of the headphones, achieving a better sound insulation effect, thereby improving the noise cancellation performance of the headphones.

[0004] This application also proposes a second embodiment of the ear cover.

[0005] This application also proposes a third embodiment of an ear cover.

[0006] This application also proposes an earphone having an ear cover of any of the above embodiments.

[0007] The ear cover according to the first embodiment of this application includes an ear cover body and an air valve assembly;

[0008] The earpiece body includes an inner peripheral wall and an outer peripheral wall distributed around a reference axis. The inner peripheral wall forms a first through hole that runs through the reference axis. Along the radial direction of the reference axis, the inner peripheral wall and the outer peripheral wall are arranged in a ring-shaped interval, and a receiving cavity is formed between the inner peripheral wall and the outer peripheral wall, which contains sound-insulating gas.

[0009] The air valve assembly is connected to the ear cup body. The air valve assembly has an open state and a closed state. The air valve assembly is configured to open the receiving cavity in the open state and close the receiving cavity in the closed state.

[0010] According to the embodiments of this application, the ear cover has at least the following beneficial effects: the ear cover body is used to connect the ear shell, and the two together define a receiving space for accommodating the ear. Thus, when the ear is placed in the receiving space, the ear cover body fits against the skin of the surrounding area of ​​the ear, forming a wrapping structure for the ear. Furthermore, the sound-insulating gas in the receiving cavity can more effectively block ambient sounds outside the receiving space through the sound wave absorption characteristics of the gas medium, reducing the interference of external noise on the sound in the receiving space, which is beneficial to improving the noise reduction performance of the headphones.

[0011] According to some embodiments of this application, the valve assembly includes a valve body and an elastic structure, the valve body is connected to the earpiece body, and the valve body is provided with a second through hole;

[0012] The elastic structure can generate elastic deformation along the axial direction of the second through hole. In the open state, the second through hole is open and connected to the receiving cavity. In the closed state, the elastic structure abuts against the valve body to seal the second through hole.

[0013] According to some embodiments of this application, the valve assembly further includes a first abutting portion, and the valve body further includes a second abutting portion. The first abutting portion and the second abutting portion are both connected to the wall of the second through hole. The elastic structure is located inside the second through hole. Along the axial direction of the second through hole, the first abutting portion and the second abutting portion are arranged at intervals, and one end of the elastic structure abuts against the first abutting portion.

[0014] In the closed state, the other end of the elastic structure abuts against the second abutment to seal the second through hole. In the open state, the elastic structure separates from the second abutment, and the second through hole communicates with the receiving cavity.

[0015] According to some embodiments of this application, the valve assembly is connected to the outer peripheral wall.

[0016] According to the second embodiment of this application, the ear cover includes an ear cover body. The ear cover body includes an inner peripheral wall and an outer peripheral wall distributed around a reference axis. The inner peripheral wall forms a first through hole that passes through the reference axis. The inner peripheral wall and the outer peripheral wall are arranged in annular intervals along the radial direction of the reference axis, and a receiving cavity is formed between the inner peripheral wall and the outer peripheral wall, and a temperature-sensitive fluid is contained in the receiving cavity.

[0017] The ear cover according to the second embodiment of this application has at least the following beneficial effects: depending on the ambient temperature, different temperature-sensitive fluids can be pre-filled in the receiving cavity, and by changing the ear cover containing different temperature-sensitive fluids, the ear cover can provide a more comfortable temperature experience in each season.

[0018] An ear cover according to a third embodiment of this application includes an ear cover body and a light-emitting structure;

[0019] The ear cover body includes an inner peripheral wall and an outer peripheral wall distributed around a reference axis. The inner peripheral wall forms a first through hole that runs through the reference axis. Along the radial direction of the reference axis, the inner peripheral wall and the outer peripheral wall are arranged in a ring-shaped interval, and a receiving cavity is formed between the inner peripheral wall and the outer peripheral wall. The ear cover body is a light-transmitting structure.

[0020] The light-emitting structure is located inside the cavity.

[0021] The ear cover according to the third embodiment of this application has at least the following beneficial effects: the light-emitting structure can emit light when vibrating to warn of its own position and improve safety; in addition, the ear cover body can also protect the light-emitting structure and help extend the life of the light-emitting structure.

[0022] According to some embodiments of this application, the ear cover body is provided with a frosted layer so that the ear cover body is translucent but not color-transparent.

[0023] According to some embodiments of this application, the ear cup also includes a magnetic layer and a welding layer. Along a reference axis, the welding layer is connected to one side of the ear cup body, and the magnetic layer is connected to the side of the welding layer opposite to the ear cup body.

[0024] According to some embodiments of this application, the ear cover body is made of silicone.

[0025] The earphone according to the embodiments of this application includes an earphone body and an ear cover as described in any of the above embodiments, wherein the ear cover is connected to the earphone body.

[0026] The headphones according to the embodiments of this application have at least the following beneficial effects: by adapting different ear tips, they can have at least one of the advantages of improving noise reduction performance, improving wearing temperature and comfort, and improving safety during night runs.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a schematic diagram of the ear cover structure according to an embodiment of this application;

[0030] Figure 2 This is a top view of the ear cover according to an embodiment of this application;

[0031] Figure 3 for Figure 2 Sectional view at point AA;

[0032] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;

[0033] Figure 5 This is a schematic diagram of the structure of the valve assembly in an embodiment of this application;

[0034] Figure 6 This is an exploded view of a portion of the ear cover structure according to an embodiment of this application;

[0035] Figure 7 for Figure 3A magnified view of a portion of point C in the middle;

[0036] Figure 8 This is a schematic diagram of the valve assembly from another perspective according to an embodiment of this application;

[0037] Figure 9 This is a structural schematic diagram of the ear cover from another perspective, representing an embodiment of this application.

[0038] Figure 10 This is a simplified structural diagram of the earphone in an embodiment of this application.

[0039] Reference numerals: Ear cover body 100, inner peripheral wall 110, outer peripheral wall 120, first through hole 130, receiving cavity 140;

[0040] Air valve assembly 200, air valve body 210, second through hole 211, second abutment part 212, second through hole 2121, elastic structure 220, elastic element 221, sealing element 222, sealing part 2221, connecting part 2222, first abutment part 230, first through hole 231, limiting protrusion 240;

[0041] Welding layer 310, magnetic layer 320. Detailed Implementation

[0042] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0043] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0046] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The embodiments of this application are described below with reference to the accompanying drawings:

[0048] refer to Figures 1 to 3 According to an embodiment of this application, an earmuff includes an earmuff body 100 and a valve assembly 200. The earmuff body 100 includes an inner peripheral wall 110 and an outer peripheral wall 120 distributed around a reference axis. The inner peripheral wall 110 forms a first through hole 130 extending along the reference axis. Along the radial direction of the reference axis, the inner peripheral wall 110 and the outer peripheral wall 120 are arranged in annular intervals, and a receiving cavity 140 is formed between the inner peripheral wall 110 and the outer peripheral wall 120, which contains sound-insulating gas. Along the extension direction of the reference axis, one side of the earmuff body 100 is used to connect to the ear shell, and the ear shell closes one end of the first through hole 130. Together, they define a receiving space for accommodating the ear. When the ear is placed in the receiving space, along the extension direction of the reference axis, the side of the earmuff body 100 opposite to the ear shell fits against the skin around the ear, forming a wrapping structure for the ear. The sound-insulating gas inside the cavity 140 can more effectively block ambient sounds outside the cavity through the sound wave absorption characteristics of the gas medium, reducing the interference of external noise on the sound inside the cavity, which is beneficial to optimizing the frequency response curve and passive noise reduction curve of the headphones and improving the noise reduction performance of the headphones.

[0049] To ensure the supply of sound-insulating gas into the cavity 140 and to control the air pressure within the cavity 140, this application provides an air valve assembly 200 connected to the earpiece body 100. The air valve assembly 200 has an open state and a closed state. In the open state, the air valve assembly 200 opens the cavity 140, allowing sound-insulating gas to be injected into it; in the closed state, it closes the cavity 140, blocking the connection between the cavity 140 and the outside, thereby maintaining stable air pressure within the cavity. Thus, by controlling the amount of sound-insulating gas supplied to the cavity 140, this application can adjust the air pressure within the cavity 140 to a target value, making the firmness of different earpieces more consistent. Simultaneously, stable air pressure within the cavity can reduce acoustic parameter deviations caused by fluctuations in the physical properties of the filling medium, improve the consistency of the headphone frequency response curve, and thus optimize the stability and reliability of passive noise cancellation.

[0050] refer to Figures 1 to 3 Specifically, the sound-insulating gas can be at least one of argon, krypton, and xenon. The ear cup body 100 is made of a flexible material and can elastically deform when compressed, thus ensuring a close fit to the skin. The sound-insulating gas filled in the receiving cavity 140 can flow within the cavity with the deformation of the ear cup body 100, ensuring the deformation of the ear cup body 100. The valve assembly 200 can adopt a structure such as a rotary valve. Taking a rotary valve as an example, the valve assembly 200 can adopt a rotary valve structure, which includes a valve body and a valve disc. When the through hole on the valve disc is aligned with the valve body channel, the rotary valve is in the open state, allowing external sound-insulating gas to be injected into the receiving cavity 140 through the valve body channel; when the valve disc rotates and causes the through hole to deviate from the valve body channel, the rotary valve switches to the closed state, blocking the gas flow between the receiving cavity 140 and the outside.

[0051] It should be noted that, in order to ensure the airtightness of the cavity 140, the ear cup body 100 adopts an integrated molding process. During the molding process, the valve body of the air valve assembly 200 is embedded, so that the connection between the valve body and the ear cup body 100 forms a seamless sealing structure, avoiding gas leakage, thereby ensuring the stable filling of sound insulation gas and the reliability of air pressure control.

[0052] refer to Figures 2 to 4In some embodiments, the valve assembly 200 includes a valve body 210 and an elastic structure 220. The valve body 210 is connected to the earpiece body 100, and the valve body 210 is provided with a second through hole 211. To achieve the switching between the open and closed states of the valve assembly 200, the elastic structure 220 can undergo elastic deformation along the axial direction of the second through hole 211. In the open state, the second through hole 211 is open and connects to the receiving cavity 140, allowing sound-insulating gas to enter the receiving cavity 140 through the second through hole 211, or for sound-insulating gas in the receiving cavity 140 to flow out through the second through hole 211. In the closed state, the elastic structure 220 abuts against the valve body 210 to seal the second through hole 211, preventing both the leakage of sound-insulating gas in the receiving cavity 140 and the entry of external gas.

[0053] Therefore, when it is necessary to introduce sound-insulating gas into the receiving cavity 140, an external inflation tool such as an air needle can be used to press against the elastic structure 220, causing the elastic structure 220 to be further compressed along the axial direction of the second through hole 211. The elastic structure 220 then releases its blockage of the second through hole 211, thus opening the second through hole 211 and allowing the sound-insulating gas to be injected into the receiving cavity 140. When the air needle is removed, the elastic structure 220 resets itself by its own elasticity, resealing the second through hole 211 and maintaining stable air pressure within the receiving cavity 140.

[0054] Specifically, the elastic structure 220 can be made of components with elastic deformation capabilities such as springs and rubber. One end of the structure is connected to the valve body 210, and the other end forms a movable sealing structure. In the closed state, the sealing structure closes the second through hole 211 and achieves the closure and conduction of the second through hole 211 through deformation. The closure of the second through hole 211 can be achieved by closing the narrowest part of the second through hole 211, making the structure more concise.

[0055] refer to Figures 2 to 4 In other embodiments, to further improve the sealing performance of the receiving cavity 140, the elastic structure 220 is provided with a sealing part 2221. The sealing part 2221 can be made of a flexible material such as rubber and has elastic deformation capability. In the closed state, the sealing part 2221 is subjected to the elastic force of the elastic structure 220 itself, and can tightly abut against the valve body 210, thereby more reliably sealing the second through hole 211. Compared with the rigid sealing structure, the sealing part 2221, through elastic deformation, can not only block the gas flow through physical contact, but also adapt to the slight undulations at the abutment point through the flexible deformation of the material itself. A dynamic sealing effect is formed between the valve body 210 and the sealing part 2221, which is beneficial to further enhance the airtightness of the receiving cavity 140 and ensure the stable filling of the sound insulation gas and the long-term reliability of the air pressure control.

[0056] refer to Figures 2 to 4 In some embodiments, to make the valve assembly 200 more compact, the valve assembly 200 includes a first abutment portion 230, and the valve body 210 includes a second abutment portion 212. The first abutment portion 230 and the second abutment portion 212 are both connected to the wall of the second through hole 211. The elastic structure 220 is located inside the second through hole 211. Along the axial direction of the second through hole 211, the first abutment portion 230 and the second abutment portion 212 are arranged at intervals, forming an installation space to accommodate the elastic structure 220. One end of the elastic structure 220 abuts against the first abutment portion 230. In the closed state, the other end of the elastic structure 220 abuts against the second abutment portion 212 to close the second through hole 211. In the open state, the elastic structure 220 is separated from the second abutment portion 212, and the second through hole 211 is connected to the receiving cavity 140. Therefore, by placing the elastic structure 220 inside the second through hole 211, and by the abutment and separation of the elastic structure 220 and the second abutment portion 212, the second through hole 211 can be closed and opened, and the space occupied by the valve assembly 200 can be reduced.

[0057] refer to Figures 3 to 5 Specifically, along the axial direction of the second through hole 211, the first abutment portion 230 is located on the side of the elastic structure 220 near the receiving cavity 140. In the open state, to ensure the communication between the second through hole 211 and the receiving cavity 140, the first abutment portion 230 may be provided with a first through hole 231, or the first abutment portion 230 may be connected to the wall of the second through hole 211 with a portion of its outer periphery, forming a communication gap at the edge. Similarly, the second abutment portion 212 may also be provided with a second through hole 2121, or it may form a communication gap with the wall of the second through hole 211. When it is necessary to close the second through hole 211, the second through hole 2121 may be closed, or the communication gap between the second abutment portion 212 and the wall of the second through hole 211 may be closed. Taking the second abutment portion 212 having a second through hole 2121 as an example, the diameter of the second through hole 2121 is smaller than the diameter of the second through hole 211. In the closed state, the elastic structure 220 abuts against the second abutment portion 212 to close the second through hole 2121, thereby closing the second through hole 211. As a result, the receiving cavity 140 is closed relative to the external environment.

[0058] The elastic structure 220 includes an elastic element 221 and a sealing element 222. The elastic element 221 can be a hollow spring, and the sealing element 222 can be a stepped structure. For example, the sealing element 222 includes a connected sealing portion 2221 and a connecting portion 2222. The cross-sectional area of ​​the sealing portion 2221 is larger than that of the connecting portion 2222 and is located along the axial direction of the second through hole 211. The sealing portion 2221 is located on the side of the connecting portion 2222 close to the second abutting portion 212. The elastic element 221 is sleeved on the connecting portion 2222 and distributed around the outer peripheral wall 120 of the connecting portion 2222. One end of the elastic element 221 abuts against the sealing portion 2221, and the other end of the elastic element 221 abuts against the first abutting portion 230. Under the action of the elastic element 221, the sealing portion 2221 abuts against the second abutting portion 212 to close the second through hole 211, and the valve assembly 200 remains in a closed state.

[0059] When sound-insulating gas needs to be introduced into the receiving cavity 140, the gas needle extends into the second through hole 211 and passes through the second through hole 2121, or through the conductive gap between the second abutment part 212 and the wall of the second through hole 211, until it presses against the sealing part 2221, thereby driving the sealing part 2221 to move towards the first abutment part 230 against the spring force (at this time, the elastic element 221 is further compressed), thus opening the second through hole 211. When the gas needle is withdrawn, the spring force pushes the sealing part 2221 to reset, and the sealing part 2221 re-closes the second through hole 211, blocking the gas flow.

[0060] refer to Figures 3 to 5 In other embodiments, to facilitate the insertion of the air needle, the second abutment portion 212 is connected to a guide tube. The guide tube extends toward the side away from the elastic structure 220 and defines a second through hole 2121. When sound-insulating gas is injected, the air needle can be inserted into the second through hole 2121, preventing the air needle from tilting and making the abutment between the air needle and the sealing portion 2221 more stable.

[0061] refer to Figures 3 to 5 In other embodiments, to improve the stability of the connection between the valve assembly 200 and the earpiece body 100, a limiting protrusion 240 is connected on the outer peripheral wall 120 of the valve body 210. The limiting protrusion 240 is used to restrict the valve assembly 200 from detaching from the earpiece body 100 along the axial direction of the second through hole 211.

[0062] refer to Figures 1 to 4 In some embodiments, to improve the usability of the valve assembly 200 and avoid interfering with the core functional area of ​​the earphone, the valve assembly 200 is connected to the outer peripheral wall 120 of the earpiece body 100.

[0063] Specifically, the inner peripheral wall 110 of the ear cup body 100 forms a first through hole 130 around the reference axis. The area where the first through hole 130 is located is used to accommodate the ear. Along the extension direction of the reference axis, the ear cup includes a first side wall and a second side wall, wherein the first side wall faces the head and is used to fit the skin around the ear to form a seal; the second side wall faces away from the head and is used to connect with the ear shell of the earphone.

[0064] Currently, the earcups of over-ear headphones are primarily made of foam material, covered with an outer layer of artificial leather to achieve a close fit to the skin and provide comfort. However, this design has a drawback in terms of user experience: the insulating properties of the foam interact with the thermal conductivity of the leather, resulting in discomfort due to the coolness of the leather against the skin in winter, and stuffiness due to the heat stored in the foam during prolonged wear in summer. This difference in sensation depending on ambient temperature makes it difficult for existing earcups to provide a consistently comfortable wearing experience in different seasons, becoming a major problem affecting user experience.

[0065] refer to Figures 1 to 4 This application addresses the issue of unsatisfactory earbud wearing experience by proposing a second embodiment of an earbud. The earbud includes an earbud body 100, which comprises an inner peripheral wall 110 and an outer peripheral wall 120 distributed around a reference axis. The inner peripheral wall 110 forms a first through hole 130 extending along the reference axis. The inner peripheral wall 110 and the outer peripheral wall 120 are arranged annularly spaced along the radial direction of the reference axis, and a receiving cavity 140 is formed between the inner peripheral wall 110 and the outer peripheral wall 120, containing a temperature-sensitive fluid. Depending on the ambient temperature, different temperature-sensitive fluids can be pre-filled into the receiving cavity 140. By changing the earbuds containing different temperature-sensitive fluids, a more comfortable temperature experience can be achieved when wearing the earbuds in different seasons.

[0066] Specifically, the temperature-sensitive fluid is a functional liquid with specific thermal conductivity properties. For example, in winter, it can be filled with a warm-based fluid containing thermally conductive additives (such as propylene glycol and glycerin). Its high specific heat capacity allows it to slowly absorb and store body heat, continuously releasing a gentle warmth through contact with the skin, thus alleviating the cold feeling caused by artificial leather in winter. In summer, it can be filled with an ice-sensitive base fluid containing cooling ingredients (such as aqueous solutions and low-boiling-point volatile solvents). Its low thermal conductivity or rapid evaporation properties can reduce the surface temperature of the earcups, reducing stuffiness. Both fluids are liquid and have fluidity, allowing them to deform evenly distribute within the receiving cavity 140 along with the earcup body 100, achieving ergonomic adjustment through heat conduction in the area in contact with the skin.

[0067] While wearing headphones while running at night can enhance motivation, the blocking of ambient sounds reduces the wearer's ability to perceive their surroundings and makes it difficult to locate themselves in dimly lit environments, posing a safety hazard.

[0068] refer to Figures 1 to 4This application addresses safety hazards by proposing a third embodiment of an earmuff. The earmuff includes an earmuff body 100 and a light-emitting structure. The earmuff body 100 includes an inner peripheral wall 110 and an outer peripheral wall 120 distributed around a reference axis. The inner peripheral wall 110 forms a first through hole 130 extending along the reference axis. The inner peripheral wall 110 and the outer peripheral wall 120 are arranged in a ring-shaped interval along the radial direction of the reference axis, and a receiving cavity 140 is formed between the inner peripheral wall 110 and the outer peripheral wall 120. The earmuff body 100 is a light-transmitting structure, and the light-emitting structure is located in the receiving cavity 140. When running, the light-emitting structure can emit light to warn of its own position, thereby improving safety.

[0069] Specifically, the light-emitting structure can be a self-illuminating vibration lamp, which includes a vibration sensor and an LED light assembly. When the vibration sensor detects vibration, it triggers the LED light assembly to emit light, which is then emitted through the translucent earcup body 100 to the outside, serving as a warning. When the vibration sensor does not detect vibration, the LED light assembly stops illuminating, reducing the power consumption of the wireless headphones and improving their battery life. Furthermore, the light-emitting structure is housed within the receiving cavity 140, effectively blocking interference from external environmental factors such as dust and sweat, allowing for more stable light emission.

[0070] refer to Figures 1 to 10 In some embodiments, the earpiece body 100 is provided with a frosted layer to make the earpiece body 100 transparent to light but opaque to color. The frosted layer forms a uniformly distributed micron-level texture through surface microstructure treatment (such as sandblasting, chemical etching, or photocuring diffuse coating). This structural characteristic causes light to be diffusely reflected when it passes through the earpiece body 100, achieving the effect of being transparent to light but opaque to color. The outside world can perceive the soft halo emitted by the light-emitting structure, but cannot directly see the details of the LED light group, circuit and other components inside the receiving cavity 140, making the earpiece simpler and more beautiful.

[0071] refer to Figure 6 and Figure 7In any of the above embodiments, the ear cup further includes a magnetic layer 320 and a welding layer 310. Along the extension direction of the reference axis, the welding layer 310 is connected to one side of the ear cup body 100, and the magnetic layer 320 is connected to the side of the welding layer 310 opposite to the ear cup body 100. The welding layer 310 may be made of PET (Polyethylene). The earpiece body 100 is made of terephthalate (polyethylene terephthalate) and is fixed to one side of the earpiece body 100 by hot-melt or adhesive bonding. The magnetic layer 320 is attached to the other side of the fusion layer 310 away from the earpiece body 100. The fusion layer 310 is used to solve the problem that the curved surface of the earpiece body 100 is not convenient for magnetic connection. The fusion layer 310 can provide a flatter base surface, effectively avoiding the installation of the magnetic layer 320 by misalignment. The magnetic layer 320 uses a flexible magnet, which can adapt to slight deformation of the earpiece. While ensuring the stability of the magnetic connection, it can also avoid the adsorption misalignment caused by the uneven surface of the earpiece body 100. The magnetic layer 320 is used to magnetically attach the ear shell, realizing the detachable connection between the two.

[0072] refer to Figures 1 to 10 In any of the above embodiments, the earpiece body 100 is made of silicone. Compared to traditional sponge materials, silicone has better wear resistance and anti-aging properties, resulting in a longer service life. Furthermore, silicone has better temperature adaptability, maintaining structural stability from -60℃ to 260℃.

[0073] refer to Figures 1 to 10 The earphones according to the embodiments of this application include an earphone body and an ear cover as described in any of the above embodiments. The ear cover is connected to the earphone body. By assembling the ear cover, at least one of the following advantages can be achieved: improved noise reduction performance, improved wearing temperature and comfort, and improved safety during night running.

[0074] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An ear cover, characterized in that, include: The earpiece body includes an inner peripheral wall and an outer peripheral wall distributed around a reference axis. The inner peripheral wall forms a first through hole that extends along the reference axis. The inner peripheral wall and the outer peripheral wall are arranged in a ring-shaped interval along the radial direction of the reference axis, and a receiving cavity is formed between the inner peripheral wall and the outer peripheral wall. The receiving cavity contains sound-insulating gas. An air valve assembly is connected to the earpiece body. The air valve assembly has an open state and a closed state. The air valve assembly is configured to open the receiving cavity in the open state and close the receiving cavity in the closed state.

2. The ear cover according to claim 1, characterized in that, The valve assembly includes a valve body and an elastic structure. The valve body is connected to the earpiece body, and the valve body is provided with a second through hole. The elastic structure is capable of elastic deformation along the axial direction of the second through hole. In the open state, the second through hole is open and connected to the receiving cavity. In the closed state, the elastic structure abuts against the valve body to close the second through hole.

3. The ear cover according to claim 2, characterized in that, The valve assembly further includes a first abutting part, and the valve body further includes a second abutting part. The first abutting part and the second abutting part are both connected to the wall of the second through hole. The elastic structure is located inside the second through hole. Along the axial direction of the second through hole, the first abutting part and the second abutting part are arranged at intervals. One end of the elastic structure abuts against the first abutting part. In the closed state, the other end of the elastic structure abuts against the second abutment portion to close the second through hole. In the open state, the elastic structure separates from the second abutment portion, and the second through hole communicates with the receiving cavity.

4. The ear cover according to claim 1, characterized in that, The valve assembly is connected to the outer peripheral wall.

5. An ear cover, characterized in that, The device includes an ear sleeve body, which includes an inner peripheral wall and an outer peripheral wall distributed around a reference axis. The inner peripheral wall forms a first through hole that extends along the reference axis. The inner peripheral wall and the outer peripheral wall are arranged in annular intervals along the radial direction of the reference axis, and a receiving cavity is formed between the inner peripheral wall and the outer peripheral wall, which contains a temperature-sensitive fluid.

6. An ear cover, characterized in that, include: The ear cover body includes an inner peripheral wall and an outer peripheral wall distributed around a reference axis. The inner peripheral wall forms a first through hole that extends along the reference axis. The inner peripheral wall and the outer peripheral wall are arranged in a ring-shaped interval along the radial direction of the reference axis, and a receiving cavity is formed between the inner peripheral wall and the outer peripheral wall. The ear cover body has a light-transmitting structure. The light-emitting structure is located within the receiving cavity.

7. The ear cover according to claim 6, characterized in that, The ear cover body has a frosted layer to make the ear cover body transparent to light but not transparent to color.

8. The ear cover according to any one of claims 1 to 7, characterized in that, The ear cup also includes a magnetic layer and a fusion layer. Along the reference axis, the fusion layer is connected to one side of the ear cup body, and the magnetic layer is connected to the side of the fusion layer opposite to the ear cup body.

9. The ear cover according to any one of claims 1 to 7, characterized in that, The earcups are made of silicone.

10. An earphone, characterized in that, include: Headphone body; The ear cover according to any one of claims 1 to 9, wherein the ear cover is connected to the headphone body.

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