Headphones

Abstract

The utility model discloses a kind of headphones, including headband and the earphone body of being arranged in the both ends of the headband, the earphone body includes: acoustic cavity main body and ear cover, the ear cover includes closed ear cover or open ear cover, and each independently with the acoustic cavity main body detachably connected;Closed ear cover and open ear cover are all provided with acoustic cavity connecting port and ear package mouth, acoustic cavity connecting port and the ear package mouth between being provided with cover wall, the cover wall of closed ear cover is arranged as sound insulation structure and can insulate the space inside and outside the cover wall, the cover wall of open ear cover is provided with several through holes, which communicate the space inside and outside the cover wall.The utility model can satisfy different needs of user in the face of different scenarios, and better practicality.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, specifically to a type of over-ear headphone. Background Technology

[0002] The most prominent structural feature of over-ear headphones is the design of earcups or earmuffs that cover the ears. These earcups or earmuffs distribute pressure, preventing ear canal compression and making them more comfortable for extended wear, especially suitable for long music listening sessions or commutes. Over-ear headphones do not block the ear canal, reducing the risk of physical damage to the eardrum.

[0003] Most headphones are closed-back, offering advantages such as strong noise isolation and powerful bass, making them suitable for indoor listening, gaming, and air travel. However, they also have significant drawbacks: prolonged use can cause stuffiness, ear pressure, and ear pain, especially in summer when you want to take them off after a short time. They are also not ideal for sports activities, as the inability to hear external sounds can pose a safety hazard. Therefore, open-back headphones have emerged. These headphones use a non-closed design, offering improved breathability compared to closed-back headphones. This allows for clearer perception of ambient sounds (such as traffic signals and pedestrian announcements), enhancing safety during outdoor activities or commutes. However, they lack noise cancellation.

[0004] Therefore, to address users' diverse needs in different scenarios, existing technologies have proposed designs for headphones that allow switching between open-back and closed-back modes. For example, ZL201721632580.1 and ZL202410553876.2 both propose using a vent in the rear acoustic chamber of the headphones and a removable back cover to switch between open-back and closed-back modes. However, when the back cover is removed, external sound enters directly from the rear acoustic chamber, resulting in significant noise and severely impacting the headphone's sound quality. Another switching structure, ZL202510251046.9, uses a vent and a rotatable baffle at the rear of the headphone body. Rotating the baffle to cover the vent allows switching from open-back to closed-back mode. However, for the baffle to rotate, it must have a certain gap, making it difficult to achieve a good seal even when the vent is covered, resulting in poor sound quality in closed-back mode. Furthermore, the rotatable baffle structure increases the overall weight and structural complexity of the headphones, making actual production difficult and impractical. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a headset, including a headband and earphone bodies disposed at both ends of the headband, the earphone bodies comprising:

[0006] The main body of the acoustic cavity;

[0007] Earmuffs, including closed-back earmuffs or open-back earmuffs, are detachably and independently connected to the sound cavity body;

[0008] Both the closed-back and open-back earmuffs are provided with a sound cavity connection port and an ear cup opening. A cover wall is provided between the sound cavity connection port and the ear cup opening. The cover wall of the closed-back earmuff is designed as a sound insulation structure to isolate the space inside and outside the cover wall. The cover wall of the open-back earmuff is provided with several through holes that connect the space inside and outside the cover wall.

[0009] Preferably, a plurality of through holes are evenly distributed to form a mesh area, the mesh area being evenly or intermittently distributed on the cover wall, and the diameter of each through hole is 0.5mm-3mm.

[0010] Preferably, the acoustic cavity body includes a sound-emitting unit and a sound-collecting component. The sound-emitting unit is sealed inside the sound-collecting component. The sound-emitting side of the sound-emitting unit and the sound-collecting component define a front acoustic cavity. The sound-collecting component is provided with a sound outlet to connect the front acoustic cavity to the outside. The sound outlet is smaller than the sound-emitting area of ​​the front acoustic cavity. The sound-emitting unit is located inside the earcup at a height between 3 / 8 and 5 / 8.

[0011] Preferably, the acoustic cavity body and the earmuff are detachably connected by a pivotable locking member. When the locking member is pivoted to the locked state, the acoustic cavity body and the earmuff are locked and fixed; when the locking member is pivoted to the unlocked state, the acoustic cavity body and the earmuff are unlocked.

[0012] Preferably, the acoustic cavity body further includes:

[0013] A support bracket that supports the outer side of the earcup;

[0014] A retaining ring is disposed on the bracket and located between the locking member and the bracket.

[0015] Preferably, the support includes:

[0016] The mounting part is provided with an embedding groove, which is connected to the sound cavity connection port;

[0017] Multiple connecting parts, one end of which is connected to the mounting part and supported on the outside of the cover wall;

[0018] An annular portion is connected to the other end of the plurality of connecting portions, and the fixing ring is fixed to the annular portion.

[0019] Preferably, the plurality of connecting portions are spaced apart around the axial direction of the bracket, and together with the mounting portion and the annular portion, form a plurality of vents. When the open earmuff is fixed on the bracket, the vents are connected to the through holes; when the closed earmuff is fixed on the bracket, the vents are closed by the wall of the closed earmuff.

[0020] Preferably, the locking element includes:

[0021] A sleeve portion, the sleeve portion being used to fit a flexible sleeve;

[0022] An embedding portion is provided on the sleeve portion and protrudes along the axial direction of the sleeve portion.

[0023] Preferably, the embedding part is provided with an annular groove, which is connected to the earpiece opening.

[0024] Preferably, the peripheral wall of the embedded part is provided with a plurality of spaced-apart engaging parts, each of the engaging parts extending along the circumferential direction of the embedded part.

[0025] Preferably, the peripheral wall of the fixing ring is provided with a plurality of connecting slots at intervals, and each engaging part is configured to be movable relative to each connecting slot. When the engaging part moves into the connecting slot, the locking member is switched to the locked state; when the engaging part moves to disengage from the connecting slot, the locking member is switched to the unlocked state.

[0026] Preferably, the outer cover of the sound collector is provided with a metal mesh cover, and the inner wall of the metal mesh cover is tightly fitted to the outer end face of the sound collector.

[0027] The above-described solution of this utility model has at least the following beneficial effects:

[0028] This invention features separate, detachable closed-back and open-back earcups that can be detachably connected to the sound chamber body. When higher sound quality is desired, the closed-back earcups can be fixed to the sound chamber body, allowing the earcup walls to isolate the inner and outer spaces for better sound isolation. When needing to be aware of external sounds, such as during outdoor cycling, the open-back earcups can be fixed to the sound chamber body, allowing several through-holes on the open-back earcups to connect the inner and outer spaces, resulting in safer use. This design meets the diverse needs of users in different scenarios. The open-back earcup structure with through-holes allows for the reception of external sounds. Compared to existing open-back headphones with through-holes at the rear of the sound chamber body, the sound quality of this design is not affected. Users can enjoy higher sound quality while receiving external sounds through the side earcups, offering improved practicality.

[0029] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the over-ear headphones provided in this embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the headphone body provided in the embodiment of this utility model;

[0033] Figure 3 This is a cross-sectional view of the headphone body provided in the embodiment of this utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the closed earmuff provided in the embodiment of this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the open-back earmuff provided in this embodiment of the utility model;

[0036] Figure 6 This is an exploded view of the headphone body provided in this embodiment of the utility model;

[0037] Figure 7 This is an exploded view of the acoustic cavity body provided in the embodiment of this utility model;

[0038] Figure 8 This is an exploded view of the locking component and earmuff provided in the embodiments of this utility model;

[0039] Explanation of icon numbers:

[0040] 10. Sound cavity body; 11. Bracket; 111. Mounting part; 1111. Embedding groove; 112. Connecting part; 113. Annular part; 114. Vent; 12. Fixing ring; 121. Connecting bayonet; 13. Sound unit; 131. Front sound cavity; 14. Sound collector; 141. Sound outlet; 20. Earmuff; 201. Sound cavity connection port; 202. Ear cup opening; 203. Cover wall; 204. Through hole; 21. Closed earmuff; 22. Open earmuff; 30. Locking part; 31. Sleeve part; 32. Embedding part; 321. Annular groove; 322. Locking part; 40. Headphone body; 50. Headband; 60. Flexible collar; 70. Metal mesh cover.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The embodiments of this utility model 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 intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a headset.

[0048] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the over-ear headphones provided in this embodiment of the present invention include a headband 50 and headphone bodies 40 disposed at both ends of the headband 50. The headphone body 40 includes a sound cavity body 10 and earcups 20. The earcups 20 include closed earcups 21 or open earcups 22, and each is detachably connected to the sound cavity body 10 independently. Both closed earcups 21 and open earcups 22 are provided with a sound cavity connection port 201 and an ear cup opening 202. A cover wall 203 is provided between the sound cavity connection port 201 and the ear cup opening 202. The cover wall 203 of the closed earcup 21 is set as a sound insulation structure to isolate the inner and outer spaces of the cover wall 203. The cover wall 203 of the open earcup 22 is provided with a plurality of through holes 204 communicating the inner and outer spaces of the cover wall 203.

[0049] The acoustic cavity body 10 serves as the mounting body for the sound-generating unit, while the earmuffs 20 completely cover the user's ears. When the closed-back earmuffs 21 are connected to the acoustic cavity body 10, they can seal the sound output from the sound-generating unit, ensuring stronger sound insulation for the user's ears. When using the open-back earmuffs 22, the closed-back earmuffs 21 are first removed from the acoustic cavity body 10, and then the open-back earmuffs 22 are connected to the acoustic cavity body 10. Ambient sounds can then be transmitted into the earmuffs 20, allowing the user to receive external sounds while ensuring better ear ventilation.

[0050] This invention features a closed-back earcup 21 and an open-back earcup 22 that can be detachably connected to and replaced with the sound cavity body 10. When the closed-back earcup 21 is connected and fixed to the sound cavity body 10, the cover wall 203 of the closed-back earcup 21 can isolate the inner and outer spaces of the cover wall 203, thereby achieving a better sealing effect. Alternatively, the open-back earcup 22 can be connected and fixed to the sound cavity body 10, allowing the several through holes 204 on the open-back earcup 22 to connect the inner and outer spaces of the cover wall 203. This can meet the different needs of users in different scenarios and improve practicality.

[0051] Reference Figure 3 and Figure 5 As shown, several through holes 204 are evenly distributed to form a mesh area. These mesh areas are evenly or intermittently distributed on the cover wall 203. For example, each mesh area may have multiple through holes 204 densely distributed, and adjacent mesh areas may be designated as non-mesh areas, where no through holes 204 are present. The mesh areas and non-mesh areas are alternately arranged. Alternatively, through holes 204 may be evenly distributed across the entire cover wall 203 to form a mesh area. The distribution of these mesh areas can be arranged according to a certain pattern on the cover wall 203. The earcup 20 ensures the breathability of the through holes 204 while maintaining a certain level of sealing. The diameter of each through hole 204 is 0.5mm-3mm.

[0052] Preferably, the through-hole 204 can be a circular hole with a diameter of 1 mm, and the density of the aforementioned mesh area can be 8-10 mesh / cm. 2 The air permeability of the through hole 204 can be greater than 98%. Optionally, the shape of the through hole 204 can also be hexagonal, cross, plum blossom, triangular, square, oval, etc. When other shapes are used as the shape of the through hole 204, its air permeability and the density of the mesh area must meet the above conditions. As some alternative solutions, the through hole 204 can also be irregular in shape, etc.

[0053] In a preferred embodiment, the acoustic cavity body 10 and the earcup 20 are detachably connected by a pivotable locking member 30. When the locking member 30 is pivoted to the locked state, the acoustic cavity body 10 and the earcup 20 are locked and fixed; when the locking member 30 is pivoted to the unlocked state, the acoustic cavity body 10 and the earcup 20 are unlocked.

[0054] In this embodiment, to facilitate the disassembly and installation of the earcups 20 and the acoustic cavity body 10, the locking member 30 can be a ring structure, and the diameter of the locking member 30 can be larger than the diameter of the earcups 20. During disassembly and installation, it can be held in hand, so that the locking member 30 can be disassembled without the aid of tools. When replacement is required, the locking member 30 can be pivoted to the unlocked state, and the open earcup 22 or the closed earcup 21 can be replaced. After replacement, the locking member 30 can be pivoted to the locked state, so that the acoustic cavity body 10 and the earcups 20 are locked and fixed, ensuring more stable installation and simpler replacement operation of the earcups 20.

[0055] Reference Figure 6 and Figure 7 As shown, the acoustic cavity body 10 includes a bracket 11 and a fixing ring 12. The bracket 11 supports the outside of the earcup 20; the fixing ring 12 is disposed on the bracket 11 and is located between the locking member 30 and the bracket 11.

[0056] In this embodiment, the bracket 11 can fit snugly against the outer side of the earcup 20, resulting in better overall consistency. The fixing ring 12 can switch between a locked state and an unlocked state with the locking member 30, so that when the locking member 30 is connected and fixed to the fixing ring 12, the earcup 20 can be limited to the inner side of the bracket 11, ensuring a more stable fixation between the earcup 20 and the bracket 11. Alternatively, the sound cavity body 10 can also be integrally set, so that the locking member 30 and the sound cavity body 10 can be directly and quickly disassembled and assembled, thereby reducing the assembly operation between the bracket 11 and the fixing ring 12.

[0057] Furthermore, the bracket 11 includes: a mounting part 111, multiple connecting parts 112, and an annular part 113. The mounting part 111 is provided with an embedding groove 1111, which is connected to the sound cavity connection port 201. One end of the multiple connecting parts 112 is connected to the mounting part 111 and supported on the outside of the cover wall 203. The annular part 113 is connected to the other end of the multiple connecting parts 112, and the fixing ring 12 is fixed to the annular part 113. Furthermore, the multiple connecting parts 112 are spaced apart around the axial direction of the bracket 11, and together with the mounting part 111 and the annular part 113, they form multiple vents 114. When the open earcup 22 is fixed on the bracket 11, the vents 114 are connected to the through hole 204. When the closed earcup 21 is fixed on the bracket 11, the vents 114 are closed by the cover wall 203 of the closed earcup 21.

[0058] In this embodiment, the connecting portions 112 can be spaced between the mounting portion 111 and the annular portion 113, so that a vent 114 is formed between the multiple connecting portions 112. The width of the connecting portions 112 can be set to 1-4cm. The width of the connecting portions 112 can be set according to actual needs. It is necessary to ensure the overall support strength of the bracket 11 while increasing the breathability of the bracket 11. For example, the area occupied by the vent 114 on the bracket 11 is greater than 70%. It can be understood that when the open earmuff 22 is installed, the vent 114 can be connected to the through hole 204. When the closed earmuff 21 is installed, the vent 114 can be closed by the closed earmuff 21. This ensures that the bracket 11 can provide better support for the earmuff 20 while improving the breathability in different usage scenarios.

[0059] Reference Figure 7 and Figure 8 As shown, the locking member 30 includes a sleeve portion 31 and an insert portion 32. The sleeve portion 31 is used to fit the flexible ring 60. The insert portion 32 is disposed on the sleeve portion 31 and protrudes along the axial direction of the sleeve portion 31.

[0060] In this embodiment, the flexible sleeve 60 can be a sponge sleeve or a silicone sleeve, etc. By fastening the flexible sleeve 60 to the sleeve part 31, the flexible sleeve 60 can fit snugly against the human head during use, increasing the overall wearing comfort. After the earmuff 20 is installed in the bracket 11, the insert part 32 can be embedded and fitted into the inner side of the fixing ring 12. Thus, when the locking member 30 is rotated, the insert part 32 can fit and rotate inside the fixing ring 12, ensuring a higher fit and better sealing between the locking member 30 and the fixing ring 12. As a preferred embodiment, the insert part 32 is provided with an annular groove 321, which is connected to the ear cup opening 202, so that the earmuff 20 and the locking member 30 can form mutual limiting. When the locking member 30 rotates, it can achieve stable rotation through the cooperation of the annular groove 321 and the insert part 32, and the annular groove 321 can stably lock the earmuff 20.

[0061] Specifically, the peripheral wall of the embedding part 32 is provided with a plurality of spaced-apart engaging parts 322, each engaging part 322 extending along the circumferential direction of the embedding part 32; further, the peripheral wall of the fixing ring 12 is provided with a plurality of spaced-apart connecting slots 121, each engaging part 322 being configured to be movable relative to each connecting slot 121. When the engaging part 322 moves into the connecting slot 121, the locking member 30 is switched to the locked state; when the engaging part 322 moves to disengage from the connecting slot 121, the locking member 30 is switched to the unlocked state. As another embodiment, the engaging part 32 may also be provided in the fixing ring 12, and the connecting buckle 121 may be provided in the embedding part 23.

[0062] In this embodiment, when the locking member 30 is fixed to the fixing ring 12, the locking member 30 can be axially inserted into the fixing ring 12 and then pivot about the axial direction. Figure 6 As indicated by the arrow, when locking the earmuff 20 using the locking member 30, the engaging part 322 is axially inserted into the connecting slot 121 before rotation. This causes the engaging part 322 to be rotated to the end of the connecting slot 121 and thus axially locked, preventing the locking member 30 from axially disengaging from the retaining ring 12. When unlocking the earmuff 20 using the locking member 30, the axial lock is released by rotation, and then the locking member 30 is axially moved, allowing the engaging part 322 to disengage from the connecting slot 121. This allows the locking element 30 to detach from the retaining ring 12 in the axial direction, making the replacement of the earcup 20 simpler and requiring no tools, thus making it more convenient and easy to use. As a preferred option, the locking element 30 and the earcup 20 can be connected as one unit, so that when the locking element 20 is separated from the retaining ring 12, the earcup 20 can be removed simultaneously, eliminating the need for separate disassembly and installation of the earcup 20. Disassembly and installation can be performed simply by operating the locking element 30 or the flexible sleeve 60 fitted on the locking element 30.

[0063] In a preferred embodiment, the above-mentioned acoustic cavity body includes a sound-emitting unit 13 and a sound-collecting component 14. The sound-emitting unit 13 is sealed inside the sound-collecting component 14. The sound-emitting side of the sound-emitting unit 13 and the sound-collecting component 14 define a front acoustic cavity 131. The sound-collecting component 14 is provided with a sound outlet 141 to connect the front acoustic cavity 131 to the outside. The sound outlet 141 is smaller than the sound-emitting area of ​​the front acoustic cavity 131. The sound-emitting unit 13 is located inside the earmuff at a height between 3 / 8 and 5 / 8.

[0064] The size of the sound collector 14 can be close to that of the human ear, and the sound outlet 141 can be set in the position of the sound collector 14 facing the ear canal, so that the sound output from the sound outlet 141 can be concentrated towards the ear canal. By sealing the sound unit 13 and the sound collector 14, the sound can be prevented from leaking out from the gap between the sound unit 13 and the sound collector 14, and the sound collection effect is better.

[0065] Furthermore, the outer cover of the sound collector 14 is provided with a metal mesh cover 70, the inner wall of which is tightly fitted to the outer end face of the sound collector 14. The metal mesh cover 70 has evenly distributed mesh holes, which can cover and decorate the sound collector 14, providing dust protection. During use, the metal mesh cover 70 can also be placed closer to the ear, allowing the sound output from the sound outlet 141 to be transmitted to the ear through the metal mesh cover 70, resulting in a better user experience. As a preferred method, the inner wall of the metal mesh cover 70 can be tightly fitted to the outer end face of the sound collector 14, reducing sound leakage when the sound is transmitted from the sound outlet 141 to the metal mesh cover 70 for output.

[0066] Specifically, unlike traditional headphones where the sound unit is typically located behind the earcup 20, the sound collector 14 of this application protrudes inside the earcup. Preferably, the horizontal plane of the outermost end of the sound collector 14 is basically flush with the horizontal plane of the outermost end of the earcup 20. That is, by setting the sound collector 14, the sound outlet 141 can be closer to the sound inlet of the ear, which is especially suitable when assembling open earcups 22. This can effectively reduce the impact of noise, so that the sound can be output more concentratedly and improve the sound quality.

[0067] It is understandable that for an earphone body with a sound output area of ​​approximately 40mm, the diameter of the area covered by the sound output port 141 can be 14mm-18mm. This diameter can be set according to actual needs, for example, it could be 16mm. During the testing of the sound output port 141, the earphone body provided in this embodiment was compared with a traditional sound output hole of the same size as the sound output area. The test results are shown in the table below:

[0068]

[0069] As shown in the table above, compared with traditional full-coverage sound holes, in terms of distortion rate (the lower the better), the traditional sound hole has a distortion rate of 5% in the 50-1kHz range, while the sound hole 141 of this application has a distortion rate of 2% in the 100-1kHz range, representing a 3% improvement in the 100-1kHz range. Regarding frequency response, the traditional sound hole has a frequency response of 70dB in the 50-700Hz range, while the sound hole 141 of this application has a frequency response of 88dB in the 50-70Hz range, representing an overall improvement of 18dB in the 20-2kHz range, significantly enhancing the mid-low frequency response. In terms of noise reduction depth using open-back earcups 22, the traditional… The deepest point of noise reduction depth of the sound outlet is 12dB, while the deepest point of noise reduction depth of the sound outlet 141 in this application is 20dB, representing an improvement of 8dB in noise reduction depth. Regarding the noise reduction depth of the closed-back earcups 21, the deepest point of noise reduction depth of the conventional sound outlet is 13dB, while the deepest point of noise reduction depth of the sound outlet 141 in this application is 25dB, representing an improvement of 12dB in noise reduction depth. It can be understood that, compared with traditional over-ear headphones, this application concentrates the sound output through the sound outlet 141, thereby reducing sound loss and attenuation, ensuring that the sound can be concentrated for output, and resulting in better sound quality.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A type of over-ear headphone, comprising a headband and headphone bodies disposed at both ends of the headband, characterized in that, The earphone body includes: The main body of the acoustic cavity; Earmuffs, including closed-back earmuffs or open-back earmuffs, are detachably and independently connected to the sound cavity body; Both the closed-back and open-back earmuffs are provided with a sound cavity connection port and an ear cup opening. A cover wall is provided between the sound cavity connection port and the ear cup opening. The cover wall of the closed-back earmuff is designed as a sound insulation structure to isolate the space inside and outside the cover wall. The cover wall of the open-back earmuff is provided with several through holes that connect the space inside and outside the cover wall.

2. The headphones according to claim 1, characterized in that, A plurality of through holes are evenly distributed to form a mesh area, which is evenly or intermittently distributed on the cover wall, and the diameter of each through hole is 0.5mm-3mm.

3. The headphones according to claim 1, characterized in that, The main body of the acoustic cavity includes a sound-emitting unit and a sound-collecting component. The sound-emitting unit is sealed inside the sound-collecting component. The sound-emitting side of the sound-emitting unit and the sound-collecting component define a front acoustic cavity. The sound-collecting component is provided with a sound outlet that connects the front acoustic cavity to the outside. The sound outlet is smaller than the sound-emitting area of ​​the front acoustic cavity. The sound-emitting unit is located inside the earcup at a height between 3 / 8 and 5 / 8.

4. The headphones according to claim 1, characterized in that, The acoustic cavity body and the earcup are detachably connected by a pivotable locking member. When the locking member is pivoted to the locked state, the acoustic cavity body and the earcup are locked and fixed. When the locking member is pivoted to the unlocked state, the acoustic cavity body and the earcup are unlocked and can be detached and replaced.

5. The headphones according to claim 4, characterized in that, The acoustic cavity body also includes: A support bracket that supports the outer side of the earcup; A retaining ring is disposed on the bracket and located between the locking member and the bracket.

6. The headphones according to claim 5, characterized in that, The support includes: The mounting part is provided with an embedding groove, which is connected to the sound cavity connection port; Multiple connecting parts, one end of which is connected to the mounting part and supported on the outside of the cover wall; An annular portion is connected to the other end of the plurality of connecting portions, and the fixing ring is fixed to the annular portion.

7. The headphones according to claim 6, characterized in that, The multiple connecting parts are spaced apart around the axial direction of the bracket, and together with the mounting part and the annular part, they form multiple vents. When the open earmuff is fixed on the bracket, the vents are connected to the through holes; when the closed earmuff is fixed on the bracket, the vents are closed by the cover wall of the closed earmuff.

8. The headphones according to claim 5, characterized in that, The locking element includes: A sleeve portion, the sleeve portion being used to fit a flexible sleeve; An embedding portion is provided on the sleeve portion and protrudes along the axial direction of the sleeve portion.

9. The headphones according to claim 8, characterized in that, The embedding part is provided with an annular groove, which is connected to the ear opening.

10. The headphones according to claim 8, characterized in that, The peripheral wall of the embedded part is provided with a plurality of spaced-apart engaging parts, each of which extends along the circumferential direction of the embedded part.

11. The headphones according to claim 10, characterized in that, The peripheral wall of the fixing ring is provided with multiple connecting slots at intervals. Each engaging part is configured to be movable relative to each connecting slot. When the engaging part moves into the connecting slot, the locking member is switched to the locked state. When the engaging part moves to disengage from the connecting slot, the locking member is switched to the unlocked state.

12. The headphones according to claim 3, characterized in that, The outer cover of the sound collector is provided with a metal mesh cover, and the inner wall of the metal mesh cover is tightly fitted to the outer end face of the sound collector.

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