headphones

Abstract

One set of headphones (100), comprising: - an ear housing (10) comprising a main housing (11) and a sound outlet (12), wherein the main housing (11) has a main body (111A) and a projection (112A), the sound nozzle being connected to the main body (111A), the projection (112A) extending from one side of the main body (111A) and being spaced apart from the sound outlet (12); wherein the projection (112A) is configured to be located on an outside of the crus helicis of a user and extending towards the antihelix of the user when the headphones are worn by the user; and - a microphone (70) located at least partially in the projection (112A); wherein a surface of the projection (112A) facing the sound outlet (12) has a pickup opening (112A2) corresponding to the microphone.

Description

Technical field

[0001] The present invention relates to the technical field of headphones, specifically a pair of headphones. State of the art

[0002] In the prior art, the pickup opening is typically structurally located on the outer surface of the headphones, facing away from the ear when the headphones are worn, to ensure proper voice pickup. While this structural design may suffice for basic daytime use, the pickup opening can easily be blocked by bedding such as a pillow while the user sleeps, particularly when lying on their side, thus impairing the headphones' performance. Summary

[0003] Headphones are provided with the aim of ensuring that the headphones maintain good usability even when lying on one's side.

[0004] According to one aspect, a headphone comprises: an ear housing comprising a main housing and a sound outlet, wherein the main housing has a main body and a projection, the sound nozzle being connected to the main body, the projection extending from one side of the main body and being spaced apart from the sound outlet; wherein the projection is configured to be located on an outer surface of the crus helicis of a user and extending towards the antihelix of the user when the headphone is worn by the user; and a microphone being located at least partially in the projection; wherein a surface of the projection facing the sound outlet has a pickup opening (sound collection opening, tone hole) corresponding to the microphone.

[0005] The inventive design of the headphones, with the projection on one side of the main body lying outside the crus helicis and extending towards the antihelix, contributes to reducing the overall size and profile thickness of the headphones in the direction perpendicular to the auricle. A reduced profile thickness means that, when worn in a side-lying position, the headphones can be embedded as closely as possible within the concha of the user's head. This results in a relatively lower vertical pressure exerted by the headphones on the auricle and surrounding area, thus reducing discomfort and increasing comfort during sleep.

[0006] Furthermore, the microphone is positioned in the projection that extends from the circumference of the main body. The pickup opening is located on the surface facing this projection. This design means that, when lying on your side, the pickup opening of the microphone located on the lateral projection of the main body is less likely to be completely blocked by the ear cushion compared to conventional positions on the back, away from the ear. This position is further outward relative to the main part of the ear when lying on your side, and the pickup opening points towards the sound outlet (sound nozzle) (usually approximately forward or towards the ear canal) rather than directly downward towards the ear cushion. Therefore, the sound path to the pickup opening remains unobstructed even when lying on your side.In this way, the headphones can continue to capture ambient noise through this pickup opening to implement the noise cancellation function, as well as pick up sounds generated by the user through this pickup opening to enable basic conversation functions, thus ensuring the usability of the headphones.

[0007] The main body can have a first assembly space (assembly cavity) and the projection can have a second assembly space (assembly cavity) that is connected to the first assembly space.

[0008] The headphones can include an electronic control board, wherein preferably part of the electronic control board is located in the first assembly space and / or another part of the electronic control board is located in the second assembly space and / or the microphone is mounted on the electronic control board.

[0009] The electronic control board may have a sound passage channel, preferably connected to the pickup opening, and / or the microphone may be mounted on a part of the electronic control board that has the sound passage channel.

[0010] The headphones may also feature a comprehensive mesh fabric that is connected to an inside of the protrusion and / or covers a circumference of the pickup opening.

[0011] The headphones can further comprise an ear wing, the ear wing preferably comprising a mounting socket and / or a contact area, which are preferably connected to each other, and / or the mounting socket is arranged around the main body, and / or the contact area projects on a side of the mounting socket that is away from the sound outlet, and / or is located on a side of the projection that faces the sound outlet. The contact area can preferably be configured such that, when the headphones are worn by the user, it rests elastically against the user's antihelix.

[0012] The projection and the bearing area can be spaced apart from each other along a thickness direction of the main body.

[0013] In the thickness direction of the main body, an orthogonal projection of the projection and an orthogonal projection of the bearing area can partially overlap.

[0014] In the thickness direction of the main body, an orthogonal projection of the pickup opening may be adjacent to the edge of the orthogonal projection of the contact area and / or the orthogonal projection of the pickup opening and the orthogonal projection of the contact area may not overlap in the thickness direction of the main body.

[0015] The headphones may remotely comprise at least one of or each of a battery, a charging area and a magnet, wherein preferably the battery is arranged in the first mounting space and / or is electrically connected to the electronic control board and / or the charging area is configured to charge the battery and / or wherein the charging area and the magnet are arranged adjacently and / or are exposed on the side surface of the main body, and / or the charging area and the magnet are arranged on one side of the main body and the projection is arranged on an opposite side of the main body.

[0016] The surface of the sound outlet facing the projection may also have a tuning opening, which is preferably connected to the second mounting space.

[0017] The main housing can have a front housing part and a rear housing part, which are preferably connected to each other (overlapping).

[0018] The sound outlet and the rear housing part can each be arranged on opposite sides of the front housing part along the thickness direction of the front housing part.

[0019] The headphones may also include an antenna located on a surface of the rear housing facing away from the front housing part.

[0020] The antenna can be located in the center of the rear housing part and / or extend from the edge of the main body to the edge of the protrusion.

[0021] Furthermore, a flexible material layer can be arranged on the outer wall surface of the rear housing part, preferably covering the antenna.

[0022] The sound outlet can have a sound output channel and a sound outlet opening, which is preferably connected to the sound output channel, wherein the sound output channel is preferably connected to the first assembly space.

[0023] The headphones may further comprise a loudspeaker unit arranged in the sound output channel and a feedback microphone, the feedback microphone preferably being arranged on the sound output side of the loudspeaker unit.

[0024] The feedback microphone and the loudspeaker unit can be spaced apart along an axial direction of the sound output channel.

[0025] An outer edge of the projection and an outer edge of the main body can be seamlessly (fluidly) connected.

[0026] A central axis of the pickup opening and a central axis of the main body can be arranged at an angle to each other. Brief description of the drawing

[0027] To illustrate the technical solutions in the embodiments of the present invention or in the prior art more clearly, the drawings required to describe the embodiments or the prior art are briefly explained below. It is understood that the drawings in the following description represent only some embodiments. A person skilled in the art can derive other drawings from these without inventive step. Fig. Figure 1 is a schematic representation of the structure of a headphone according to some embodiments. Fig. Figure 2 is a schematic representation of the structure made up of Fig. 1 from a different perspective. Fig. 3 is an exploded view of the in Fig. 1 structure shown. Fig. 4 is another exploded view of the in Fig. 1 structure shown. Fig. Figure 5 is a schematic representation of the structure made up of Fig. 1 from a different angle (without ear wings and ear cap). Fig. Figure 6 is a schematic cross-sectional view along line AA in Fig. 5. Fig. Figure 7 is an enlarged schematic representation of area B in Fig. 6. Fig. 8 is a schematic representation of the internal structure of the in Fig. 1 structure shown. Fig. 9 is an exploded view of the in Fig. Structure shown in section 8. Fig. Figure 10 is another schematic representation of the internal structure of the in Fig. 1 structure shown. Fig. 11 is an exploded view of the in Fig. 10 shown structures. Fig. Figure 12 is a schematic representation of the internal structure of a headphone according to some further embodiments. Fig. 13 is an exploded view of the in Fig. 12 shown structures. Fig. Figure 14 is an exploded view of part of the in Fig. 1 structure shown. Fig. Figure 15 is a schematic representation of the structure of a protective net according to some embodiments. Reference symbol:

[0028] 100, Headphone; 10, Ear housing; 11, Main housing; 11a, Mounting space; 111A, Main body; 111A1, First mounting space; 112A, Projection; 112A1, Second mounting space; 112A2, Pickup opening; 112A3, Tuning opening; 111B, Front housing section; 111B1, Front housing belly; 111B2, Front housing side; 111B3, Detent groove; 112B, Rear housing section; 12, Sound outlet; 12a, Sound output channel; 12b, Sound outlet opening; 12c, Limiting groove; 12d, Positioning groove; 121, Annular projection; 10a, Pressure relief channel; 20, Ear wing; 21, Mounting socket; 22, Contact area; 30, Ear cap; 30a, pressure relief groove; 30b, through-hole; 31, annular recess; 40, charging area; 50, magnet; 60, antenna; 70, microphone; 80, feedback microphone; 90, battery; 91, speaker unit; 911, housing; 912, power connection pins; 913, support bracket; 9131, support arm; 9132, limit arm; 9132a, support groove; 92, protective mesh; 92a, through-hole; 921, protective area; 922, connection area; 9221, flange;923, support area; 9231, support foot; 94, reinforcement plate; 941, connecting plate; 942, support plate; 95, electrical connecting element; 951, first electrical connecting element; 951a, recess; 952, second electrical connecting element; 96, electronic control board; 96a, sound transmission channel; 961, contact points; 971, first tuning mesh; 972, second tuning mesh; 98, protective lacquer; 99, mesh fabric. Detailed description of the embodiments

[0029] To more clearly illustrate the purpose, technical solution, and advantages of the invention, it is described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein serve only to explain the invention and not to limit it.

[0030] Headphones (also called earphones, headsets, or earpieces) are a pair of transducer units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speaker units positioned near the ear. From the perspective of the overall audio industry's development, wireless headphones are still a relatively new phenomenon. Wireless headphones are headphones that utilize Bluetooth technology to enable a wireless connection. Users can transmit audio data wirelessly to a mobile phone or other devices. The main advantages of wireless headphones are the absence of bothersome cables and their ease of portability and use, making them particularly suitable for use during sports activities.

[0031] Among the various types of headphones, sleep headphones, a type of headphone product suitable for sleep or rest scenarios, are gradually developing into an important niche market. These headphones aim to shield users from ambient noise while sleeping, while maximizing wearing comfort.

[0032] The embodiments are explained using the example of in-ear sleep headphones. In other embodiments, the headphones can have different structures, for example, a semi-invasive (half-inserting) structure. The shape and structure of the headphones are not limited to the design described above. In the relevant technical field, designs for the external shape of headphones are already highly developed. Headphones can have various shapes and structures depending on requirements, which will not be discussed in detail here.

[0033] As in the Fig. Figures 1 to 4 show a proposed headphone 100 comprising an ear housing 10. The ear housing 10 is the main outer structural body of the headphone 100. Its interior provides space for electronic components and acoustic structures. The ear housing 10 includes a main housing 11 and a sound outlet 12. The main housing 11 is the main part of the ear housing 10. A mounting space 11a is provided within the main housing 11. The sound outlet 12 is located on the main housing 11. The sound outlet 12 is a part of the headphone 100 responsible for directing sound to the user's ear. Inside it is a sound output channel 12a, which is connected to the mounting space 11a. A sound release opening 12b, which is connected to the sound output channel 12a, is also located on the sound outlet 12.When the headphones 100 are put on, the sound outlet opening 12b is aligned towards the opening of the user's ear canal.

[0034] In these embodiments, the diameter of the sound outlet 12 is 3 mm to 6 mm and its length 3 mm to 10 mm. If the diameter of the sound outlet 12 is less than 3 mm, the sound transmission channel becomes too narrow, resulting in significant sound diffraction and reflection. High-frequency sounds are heavily attenuated, and the sound quality becomes muffled. Furthermore, an opening that is too small can easily lead to excessive pressure in the listener's ear and cause discomfort. Conversely, while a diameter greater than 6 mm would provide a more permeable sound channel and reduce high-frequency loss, an opening that is too large would scatter the sound too much and impair directivity, leading to sound energy losses in the environment outside the headphones 100 and reducing sound concentration and efficiency.Furthermore, a larger diameter could worsen the wearing comfort of the headphones 100 for the user and would be detrimental to the miniaturization of the headphones 100. Similarly, a sound outlet length 12 of less than 3 mm would make the sound path from the speaker to the ear canal too short, resulting in a lack of acoustic impedance matching and acoustic filtering, and allowing the sound to hit the ear canal directly, thus impairing the overall listening experience. While a length exceeding 10 mm could contribute to some acoustic optimization, an excessively long tube would increase sound transmission losses, particularly in the high-frequency range, and make the sound muffled. This would also increase the complexity and space requirements of the headphones 100's internal structure and increase the overall dimensions of the headphones 100. Therefore, the diameter of the sound outlet 12 is limited to 3 mm to 6 mm and the length to 3 mm to 10 mm.

[0035] Furthermore, the main housing 11 can be made of metal, for example, but not limited to, stainless steel, aluminum alloy, titanium alloy, magnesium alloy, copper alloy, etc. Compared to materials such as plastic, a main housing 11 made of metal can be designed with a smaller minimum wall thickness due to its strength and manufacturing technology. This results in a smaller wall thickness for the sound outlet 12 of the headphones 100, thus facilitating smaller dimensions such as the outer diameter of the nozzle 400. The wall thickness of the sound outlet 12 can be 0.1–0.3 mm, e.g., 0.15 mm, 0.2 mm, 0.25 mm, etc. Moreover, a metal nozzle 400, at the same wall thickness, has higher rigidity than a plastic one and is less prone to deformation. This helps reduce resonances during use, improves the sound quality of the headphones 100, and increases the structural strength of the sound outlet 12.

[0036] The headphones 100 also include a microphone 70. In various embodiments, the microphone 70 can simultaneously perform the dual function of "primary sound recording" and "ambient sound recording." For example, the signal from the microphone 70 can be split into two parts by an algorithm: one part is used to detect the user's voice (similar to a main microphone), and the other part is used to analyze ambient noise, which is then combined with the feedback signal from the FB microphone for noise cancellation.

[0037] In the prior art, for the active noise cancellation required in in-ear sleep headphones 100, the microphone 70 is typically placed within the headphone housing. To perform the sound capture function, this microphone 70 is equipped with a pickup opening. A common arrangement is to position this pickup opening on the outer surface of the headphone that faces away from the user's ear when the headphones are worn. If the user sleeps on their side, this outer surface facing away from the ear can be in close contact with bedding such as pillows or a mattress. Since the microphone 70's pickup opening is located in this area, it is easily blocked or completely covered by the aforementioned bedding.Blocking or closing the pickup opening directly prevents the microphone from effectively capturing an ambient noise signal, thus disabling the active noise cancellation function based on that signal.

[0038] With reference to Fig. 1 to Fig. In these embodiments, to solve the aforementioned problem, the main housing 11 comprises a main body 111A and a projection 112A. The sound outlet 12 is connected to the main body 111A. The main body 111A is the main part of the main housing 11, forms the main contour and volume of the earphone 100, provides the basic shape and structural support for the entire earphone 100, and accommodates the necessary internal components. The main body 111A has a flat structure. This helps to reduce the thickness of the earphone 100 in the direction perpendicular to the auricle, thereby reducing pressure on the ear and surrounding areas when worn, especially when lying on one's side, and increasing wearing comfort.

[0039] The projection 112A protrudes from one side of the main body 111A. Specifically, the projection 112A is designed so that, when the user puts on the headphones 100, it lies outside the user's crus helicis and extends towards the user's antihelix. This design prevents an increase in the thickness of the main housing 11, allowing the main body 111A to maintain a relatively thin design. The laterally positioned projection 112A does not exert direct, surface pressure in the main load direction of the lateral position, effectively avoiding the pronounced pressure sensation that occurs with conventional headphones 100 due to an excessively thick housing when lying on one's side, and thus improving the user's wearing experience in a supine position (especially on their side).

[0040] It should be noted that the main body 111A and the projection 112A together form a continuous, one-piece structure that jointly defines the mounting space 11a. That is, the projection 112A is not a separate part from the main body 111A. This integrated structural design divides the ear housing 10 into functionally distinct, but structurally coherent, areas.

[0041] Furthermore, the outer edge of the projection 112A and the outer edge of the main body 111A blend seamlessly into one another. The outer skin 911 of the earphone 100 has no sharp edges or abrupt steps from the main body 111A to the projection 112A. When the earphone 100 is worn on the ear, especially when the user is lying on their side, this smooth edge can reduce any pricking or pressure on the auricle, the crus helicis, or the surrounding skin.

[0042] The microphone 70 is located at least partially within the projection 112A. It is understood that "at least partially" refers to two cases: In the first case, the entire microphone 70 is located completely and entirely within the structure of the projection 112A. In the second case, the microphone 70 is not located entirely within the projection 112A, but rather part of it is housed in the main body 111A, while another part extends into and is positioned within the projection 112A.

[0043] Since a certain amount of space remains between the main body 111A, the sound outlet 12, and the antihelix when the headphones are in place, using this space for the projection 112A provides a suitable mounting location for the microphone 70 without significantly increasing the overall volume of the headphones 100 or altering their basic wearing method (such as in-ear headphones). This means that the projection 112A forms a local "raised area" or "step" relative to the main body 111A in the direction of the antihelix, thus creating a height difference. Furthermore, a surface of the projection 112A facing the sound outlet 12 has a pickup opening 112A2 corresponding to the microphone 70. That is, the pickup opening 112A2 is located on a side of the headphones 100 that, when worn and lying on one's side, faces away from the area under pressure. The sound path through pickup opening 112A2 remains unobstructed.Thus, the headphones 100 can continue to pick up ambient noise via this pickup opening 112A2 to implement the noise cancellation function, as well as pick up user-generated noise via this channel to ensure the basic voice transmission function, and thus ensure the usability of the headphones.

[0044] Furthermore, the central axis of the pickup opening 112A2 and the central axis of the main body 111A are arranged at an angle to each other and extend outwards from the main body 111A. The outer side of the main body 111A refers to the side that, when the headphones 100 are worn, faces the outer contour of the ear. Specifically, the central axis of the pickup opening 112A2 runs from the inside out along the thickness direction of the main body 111A and angles away from it. Since the microphone 70 is typically designed to capture ambient noise or speech during conversations, an angled pickup opening 112A2 can adjust the microphone's primary sound pickup direction to better capture sound from a specific direction (such as from the front or outside). Additionally, internal structures of the headphones 100 (such as cavities, sound outlet 12) can generate resonances or reflected sound.An inclined pickup opening 112A2 can prevent the microphone from directly receiving these internal sound waves, thus reducing the influence of resonances on the recording quality.

[0045] As in Fig. 5, Fig. 6 and Fig. As shown in Figure 7, the headphones 100 also include an electronic control board 96. Various electronic components and circuits are integrated on the electronic control board 96, which are responsible for controlling and managing the various functions of the headphones 100. The digital signal processor (DSP) located on the control board 96 can process audio signals, including noise cancellation, sound enhancement, equalizer settings, etc. The electronic control board 96 is responsible for processing the audio signals detected by the microphone 70, including amplification, filtering, noise cancellation, etc. In noise-canceling headphones 100, the digital signal processor on the control board 96 can analyze and process the ambient noise detected by the microphone 70 to generate a noise-canceling signal.

[0046] A sound transmission channel 96a is arranged on the electronic control board 96. The sound transmission channel 96a runs through the electronic control board 96 in the direction of its thickness. The pickup opening 112A2 penetrates the wall of the projection 112A. The sound transmission channel 96a is connected to the pickup opening 112A2, and the microphone 70 is mounted on a part of the electronic control board 96 where the sound transmission channel 96a is located. This means that ambient noise entering the pickup opening 112A2 from the outside can pass smoothly and efficiently to the front of the microphone 70's diaphragm, thus reducing obstacles or attenuation that the sound might encounter on its path.

[0047] Because the pickup opening is connected to the mounting space, it can also allow dust, fine fibers (such as hair, clothing fibers), etc., to enter the headphones. Long-term accumulation of these materials could clog the pickup opening, impair the microphone's normal function, and potentially even damage the internal structure.

[0048] With reference to Fig. 5, Fig. 6 and Fig. Therefore, the headphones 100 also include a mesh fabric 99. A mounting groove is provided on one side of the projection 112A, which faces the mounting space 11a. The mounting groove is connected to the pickup opening 112A2. The mesh fabric 99 is inserted into the mounting groove, i.e., connected to the inside of the projection 112A, making its mounting more secure and its positioning more precise, preventing it from shifting or deforming due to wear or movement. The mesh fabric 99 covers the circumference of the pickup opening 112A2. It prevents dust and fine fibers (such as hair or clothing fibers) from entering the interior of the headphones 100, thus protecting the feedback microphone 80 and the internal circuitry.

[0049] As in Fig. 1 and Fig. As shown in Figure 3, the mounting space 11a comprises a first mounting space 111A1 and a second mounting space 112A1, which are connected to each other. The first mounting space 111A1 is located in the main body 111A. The second mounting space 112A1 is located in the projection 112A. It is understood that the pickup opening 112A2 is connected to the second mounting space 112A1. The electrical control board 96 is flat. Part of it is located in the first mounting space 111A1, and another part projects into the second mounting space 112A1. This allows the electrical control board 96 to better adapt to the spatial arrangement inside the headphones 100. This design makes optimal use of the space provided by the main body 111A and the projection 112A, resulting in a compact design for the headphones 100.It allows the headphones 100 to accommodate the necessary electronic components and meet functional requirements while maintaining a small volume. The microphone 70 is mounted on the electrical control board 96. This shortens the signal transmission path and reduces interference during signal transmission, contributing to improved signal integrity and quality and ensuring that the microphone 70 can more accurately capture external ambient noise. Furthermore, the shorter distance between the microphone 70 and the signal processing on the electrical control board 96 significantly reduces signal processing delay, which is particularly important for the real-time noise cancellation function and can improve the immediacy and accuracy of the noise cancellation effect.

[0050] Since the main body 111A and the projection 112A are not two independent, separate components, but rather a coherent, seamlessly overlapping whole, a structured elevation of a certain thickness naturally forms in the area where the main body 111A extends and transitions into the projection 112A. The inner wall of this elevation structure forms part of the second mounting space 112A1. This elevation structure can provide support for the electrical control board 96, and the microphone 70 is accordingly positioned on the portion of the electrical control board 96 that is supported by this elevation structure.

[0051] Furthermore, mounting the microphone 70 on the electrical control board 96 provides a more stable attachment, reduces potential wobbling of the microphone 70 inside the headphones 100, and increases its durability and reliability. During the assembly process of the headphones 100, this reduces the number of assembly steps and connection points, thus decreasing the likelihood of assembly errors and increasing production efficiency.

[0052] As in Fig. 1 and Fig. As shown in Figure 3, the first mounting chamber 111A1 is directly connected to the sound output channel 12a, while the second mounting chamber 112A1 is connected to the sound output channel 12a via the first mounting chamber 111A1. A tuning port 112A3 is also provided on a surface facing the projection 112A towards the sound outlet 12, and this port is connected to the second mounting chamber 112A1. Understandably, the tuning port 112A3 connects the outside air to the rear cavity of the loudspeaker element 91 and regulates the air pressure on the rear of the vibration system. It controls the degree of acoustic coupling between the rear cavity and the outside air. This acts like an "outlet" or "relieving valve" for the sound waves on the rear of the vibration system, thus changing the pressure and acoustic load acting on the rear of the diaphragm.

[0053] The tuning port 112A3 is located on the same side of the protrusion 112A as, and in close proximity to, the pickup port 112A2. This means that when the headphones are worn, the tuning port 112A3, attached to the protrusion 112A, is less susceptible to blockages. If the tuning port 112A3 were blocked, the pressure on the rear of the vibration system could not be properly dissipated and regulated, disrupting the originally designed acoustic balance. This could lead to a deterioration of the bass response. Furthermore, it shares a relatively constant acoustic environment with the pickup port 112A2, thus increasing the stability of sound pickup and tuning.

[0054] As in Fig. 5 and Fig. As shown in Figure 9, similar to the arrangement of the pickup opening 112A2 mentioned above, the headphones 100 also include a first tuning mesh 971. A connecting groove is provided on one side of the projection 112A, which faces the second mounting space 112A1. The connecting groove is located next to the mounting groove. The connecting groove is connected to the tuning opening 112A3. The first tuning mesh 971 is arranged in the connecting groove and can, for example, form a firm bond with the projection 112A by gluing. The first tuning mesh 971 covers the circumference of the tuning opening 112A3. It prevents dust, fibers, and other fine particles from entering the interior of the headphones 100.

[0055] As in Fig. 3 and Fig. As shown in Figure 4, the headphone 100 also includes an ear wing 20. The ear wing 20 covers part of the outer surface of the main body 111A. Ear wings 20 are typically made of soft material such as silicone or rubber, which reduces pressure on the ear and increases wearing comfort.

[0056] The ear wing 20 comprises a mounting socket 21 and a contact area 22, which are connected to each other. The mounting socket 21 is fitted over the main body 111A and is designed to secure the main body 111A when the headphones 100 are worn by a user. This design ensures that the headphones 100 do not easily slip or fall off when worn, especially during activities such as sports or lying on one's side.

[0057] The bearing area 22 is arranged projecting from one side of the mounting socket 21, facing away from the sound outlet 12, and is located on one side of the projection 112A, facing the sound outlet 12. That is, the bearing area 22 projects from the outside of the mounting socket 21, at the end furthest from the sound outlet opening. This position typically corresponds to a specific area of ​​the auricle. By extending the bearing area 22 in this direction, the bony or firmer cartilaginous structure of the auricle can be used more effectively as a bearing point.

[0058] The contact area 22 is designed to elastically conform to the antihelix of the user's ear when the headphones 100 are worn. This contact provides the headphones 100 with an additional support point, thus improving their stability. The elastic design of the contact area 22 adapts to the ear shapes of different users, reducing pressure on the antihelix and increasing wearing comfort. Furthermore, the elasticity of the contact area 22 automatically adjusts the clamping force against the ear, ensuring a stable fit even during various activities.

[0059] Furthermore, when the headphones 100 are worn by a user, the contact area 22 is located on an inner side of the protrusion 112A, and the contact area 22 and the protrusion 112A are spaced apart. This allows for optimal use of the space on both sides in the thickness direction of the main body 111A, making the arrangement in the headphones 100 more compact and the overall volume smaller. The pickup opening 112A2 is located on the side of the protrusion 112A facing the contact area 22. This means that when the contact area 22 rests against the user's antihelix, there is a gap between the contact area 22 and the protrusion 112A. This design ensures that even when sleeping on one's side, pillows or other bedding do not directly block the pickup opening 112A2, thus preventing clogging.

[0060] Furthermore, in the thickness direction of the main body 111A, the vertical shadow cast by the tuning opening 112A3 lies outside the vertical shadow cast by the support area 22.

[0061] This maximizes the patency of the tuning port 112A3 and prevents obstruction. It reduces the risk of the tuning port 112A3 becoming blocked during wear; regardless of how the user adjusts the wearing position, the tuning port 112A3 remains connected to the outside air as much as possible.

[0062] In some embodiments, the contact area 22 is spaced apart from the projection 112A in the thickness direction of the main body 111A. If the contact area 22 and the projection 112A are too close together, they could cause interference on the sound propagation path or even result in some of the sound waves entering the pickup opening 112A2 being reflected back to the microphone 70 unprocessed, creating a so-called "acoustic short circuit" and reducing the noise suppression effect. The spaced arrangement can increase the free sound propagation path. By separating the contact area 22 and the projection 112A containing the microphone 70 in the thickness direction, the physical distance between them can be increased, with air or internal filling materials (if present) providing some acoustic isolation to reduce internal noise interference during microphone recording.

[0063] Furthermore, in the thickness direction of the main body 111A, the projection of the protrusion 112A and the projection of the support area 22 partially overlap. When the user lies on their side, some of the pressure exerted on the support area 22 is transferred to the underlying main body 111A, and this area of ​​the main body 111A is also the connection point of the protrusion 112A. This support helps to resist deformation or displacement of the protrusion 112A due to lateral pressure, thereby protecting the internal microphone 70 and the pickup opening 112A2 and making them less susceptible to changing their angle or being completely blocked by pressure.

[0064] Furthermore, the projection 112A and the contact area 22 share part of their spatial projection in the direction perpendicular to the thickness direction of the main body 111A. This allows for a more compact overall structure and avoids the problem that the headphones would require larger overall dimensions if space had to be reserved on the main body 111A for both separate areas.

[0065] It should be noted that, in the thickness direction of the main body 111A, the projection of the pickup opening 112A2 lies close to the edge of the projection of the support area 22, and that, in the thickness direction of the main body 111A, the projection of the pickup opening 112A2 and the projection of the support area 22 do not overlap. This means that the sound incidence path of the pickup opening 112A2 is not blocked by the support area 22. In combination with the pickup opening 112A2, which runs obliquely through the projection 112A as described above, this design allows the opening of the pickup opening 112A2 to be directed more directly at external sound sources (such as ambient noise around the user or conversational noise). This allows the sound to enter the pickup opening 112A2 more smoothly, enabling the microphone 70 to capture the target sound signal more accurately and reducing loss of sound quality or recording delays due to structural blockages.

[0066] With reference to Fig. 3 and Fig. In some embodiments, the headphones 100 include a battery (in particular an accumulator / rechargeable battery) 90 and a charging area 40. To ensure the battery 90's operating time, its volume is correspondingly larger. The bulky battery 90 is housed in the more spacious first mounting space 111A1 and is electrically connected to the electrical control board 96 to supply it with power. The battery 90 and the electrical control board 96 are arranged in the thickness direction of the main body 111A. The battery 90 has battery pins that extend towards the electrical control board 96 and are inserted into it to provide power. The charging area 40 is located on the circumferential side of the battery 90. The charging area 40 can be electrically connected to the battery 90 via the electrical control board 96 and serves to charge the battery 90.The charging area 40 is the interface or induction device for charging the battery 90. It can be physical contacts (e.g., USB Type-C, Lightning, or special wireless charging contacts) or a wireless charging coil. Its function is to receive external power (usually from the charging case or a directly connected charging cable) and transfer it safely and efficiently to the battery 90 for storage. It is crucial for the repeated use and maintenance of the battery life of the headphones 100.

[0067] In these embodiments, the charging area 40 is a wireless charging contact, and the earphone 100 also includes a magnet 50. The charging area 40 and the magnet 50 are located adjacent to each other in the first mounting space 111A1 and are visible from the outside on the outer surface of the main body 111A. When the earphone 100 is placed in the charging case for charging, the case typically also contains corresponding magnets 50. The magnet 50 on the earphone 100 and the magnet 50 in the charging case attract each other, automatically drawing the earphone 100 into the designated charging position in the case. This magnetic alignment ensures that the charging area 40 of the earphone 100 is precisely and quickly aligned with the charging contacts or the wireless charging coil in the case each time, thus guaranteeing charging reliability and eliminating the need for manual alignment by the user.

[0068] Furthermore, the charging area 40 and the magnet 50 are located on the circumferential side of the main body 111A. The skin around the user's ear and pillows can exert pressure on the ear housing 10. If the charging area 40 (typically metal contacts) or the magnet 50 (even small magnets) were located in the pressure zone, their hard surfaces could press directly against the skin and cause discomfort or even pain. This solution places them on the circumferential side of the main body 111A, away from the main pressure zone, so that when sleeping on the side, primarily the soft ear wing 20, and not the hard charging contacts or magnets, comes into contact with the user's ear. This noticeably reduces pressure and discomfort when lying on the side and significantly improves wearing comfort.

[0069] Furthermore, the charging area 40 and the magnet 50 are located on the side of the main body 111A opposite the projection 112A. Placing the charging-related components (charging area 40 and magnet 50) on the relatively opposite side reduces their potential influence on the acoustic environment inside the projection 112A. For example, charging contacts or magnets could cause minor electromagnetic interference or physical obstructions; a separate arrangement helps to ensure the purity and accuracy of the sound detection by the microphone 70.

[0070] As in Fig. As shown in Figure 4, the headphones 100 also include a loudspeaker unit 91. The loudspeaker unit 91 is the core component of the headphones 100 for sound reproduction. It converts electrical signals into sound waves, drives air through the vibration of the wall element (such as the diaphragm), and thus generates the sound audible to the user. The loudspeaker unit 91 is located at the sound outlet 12 and is situated in the sound output channel 12a. The sound output channel 12a is the main path by which the sound travels from the loudspeaker unit 91 to the ear canal. Placing the loudspeaker unit 91 in the sound output channel 12a ensures the most direct sound propagation. Furthermore, using this space for the loudspeaker unit 91 allows for a more compact arrangement of the internal components, which is advantageous for controlling the overall dimensions of the headphones 100.

[0071] As in Fig. As shown in Figure 8, the loudspeaker unit 91 comprises a housing 911, a magnetic circuit system, and a vibration system. Both the magnetic circuit system and the vibration system are housed in the housing 911. The housing 911 prevents damage to the magnetic circuit system and the vibration system. Furthermore, the housing 911 limits the position of the magnetic circuit system so that it moves stably and linearly within the magnetic field. The vibration system comprises a voice coil and a diaphragm, the voice coil being the component that causes the diaphragm to vibrate.

[0072] As in Fig. 3 and Fig. As shown in Figure 4, in some embodiments the main housing 11 comprises a front housing part 111B and a rear housing part 112B, which are connected to each other. Dividing the main housing 11 into two separately manufactured parts, which are then joined together (e.g., by means of snap-fits, screws, or adhesive), enables a good seal. Furthermore, internal structures (such as the electrical control board 96, the battery 90, etc.) can be installed in the cavity formed by the front housing part 111B and the rear housing part 112B.

[0073] The rear housing part 112B is designed as a flat, lid-like structure. Its main function is to close the rear of the front housing part 111B and, together with it, to protect the sensitive electronic and acoustic components inside. The front housing part 111B forms the main part, creating the first mounting space 111A1 and the second mounting space 112A1, and allows the electronic and acoustic components to be housed within the front housing part 111B.

[0074] The sound outlet 12 and the rear housing part 112B are each attached to opposite sides of the front housing part 111B in the direction of its thickness. The sound outlet 12 can be molded as a single piece with the front housing part 111B, which reduces the number of connection points and increases structural stability. Furthermore, the front housing part 111B and the rear housing part 112B together form the main body 111A and the projection 112A, which ensures the structural integrity and stability of the headphone shape. The projection 112A and the main body 111A, as a single unit, are less susceptible to deformation or damage during use.

[0075] The front case part 111B comprises a front case underside 111B1 and a front case side surface 111B2. The front case underside 111B1 and the front case side surface 111B2 are distinct areas of the outer surface of the front case part 111B. The front case underside 111B1 is connected to the outer surface of the sound outlet 12, and the front case side surface 111B2 is connected to the outer surface of the rear case part 112B. The front case side surface 111B2 extends from an end of the front case underside 111B1 that is away from the sound outlet 12 and is angled relative to the front case underside 111B1. The charging area 40 and the magnet 50 are both attached to the front case side surface 111B2.

[0076] When the headphones 100 are worn by the user, the surface of the front housing part 111B that primarily comes into contact with the human ear is the front housing underside 111B1. The front housing side surface 111B2, which is angled relative to the front housing underside 111B1, comes into less frequent contact with the ear. Understandably, the charging area 40 and the magnet 50 are typically hard structural components that can easily cause discomfort to the user when pressure is applied to the ear. In these embodiments, the arrangement of the charging area 40 and magnet 50 on the front housing side surface 111B2 prevents them from coming into contact with the ear when the headphones 100 are worn, thus increasing the wearing comfort of the headphones 100.

[0077] The ear wing 20 can enclose the front housing's underside 111B1 and side surface 111B2. Recesses are provided in the area corresponding to the charging area 40 and the magnet 50, exposing both to the outside. This allows the earphone 100 to engage with the corresponding structures of the charging case when placed inside. Additionally, a portion of the front housing's side surface 111B2, where the charging area 40 and the magnet 50 are located, is convex. This creates a recessed charging position in the charging case. The convexity of the charging area 40 on the front housing's side surface 111B2 allows for a better fit with the corresponding part of the charging case, resulting in a more stable connection and reducing poor contact caused by wobbling.

[0078] Optionally, the front housing side surface 111B2 can have a locking groove 111B3 to secure the ear wing 20 and ensure a stable fit of the ear wing 20 to the front housing part 111B. The locking groove 111B3 can, but need not, be annular. The ear wing 20 can be slipped over the front housing part 111B and snapped into the locking groove 111B3. The locking groove 111B3 can be located near the rear end of the front housing side surface 111B2 to facilitate the assembly of the ear wing 20. In other embodiments, the locking groove 111B3 can be located at other positions on the front housing side surface 111B2.

[0079] With reference to Fig. 3. The headphones 100 also include an antenna 60. The antenna 60 is attached to the main housing 11. The antenna 60 is the component of the headphones 100 responsible for wireless communication and, under the control of the electronic control board 96, can exchange electromagnetic waves with the outside world. The headphones 100 can transmit signals to the outside world via the antenna 60. If an external device (e.g., a mobile phone) detects this signal and pairing is successful, the headphones 100 can establish a wireless connection to the external device and subsequently transmit data, e.g., audio data, to it.

[0080] The electrical control board 96 has contacts 961 for the electrical connection to the antenna 60. Accordingly, the rear housing part 112B has micro-drillings that are connected to the second mounting space 112A1. The antenna 60 can be connected to the contacts 961 via these micro-drillings. The contacts 961 are located in the second mounting space 112A1, with the electrical control board 96 resting securely against the wall of the second mounting space 112A1. This ensures a stable spatial position and orientation of the contacts 961 on the circuit board. The connection between the antenna 60 and the contacts 961 is more secure and precise, which reduces potential contact problems or signal interference due to shocks or vibrations, thus increasing the long-term reliability of the electrical connection.

[0081] The antenna 60 is attached to an outer surface of the rear housing part 112B, facing away from the front housing part 111B. Compared to prior art solutions where the antenna 60 is located in the first mounting space 111A1 or the second mounting space 112A1, placing the antenna 60 on the outer surface of the rear housing part 112B in these embodiments reduces the shielding or reflection of radio signals by internal metal parts, plastic housings, or vibration systems, thereby improving the performance of the antenna 60. Sufficient vertical clearance is maintained between the antenna 60 and other components, preventing signal attenuation or damage due to excessive proximity. An antenna 60 mounted externally on the rear housing part 112B does not require space inside the ear housing 10, which contributes to the miniaturization of the headphone design 100.

[0082] Furthermore, when the headphones 100 are worn by the user, the antenna 60 does not come into contact with the user's ear, which reduces pressure on the ear in side-lying scenarios and prevents the skin of the ear from absorbing antenna waves, thus improving high-frequency performance.

[0083] Furthermore, to increase the coverage area of ​​the antenna 60, the antenna 60 is arranged in the central region of the rear housing part 112B. The cross-section of the rear housing part 112B is essentially elliptical, meaning that the antenna 60 extends along its long axis in the geometric center of the rear housing part 112B. It extends from the edge of the main body 111A to the edge of the projection 112A. A larger coverage area helps the antenna 60 to transmit and receive signals more effectively in various directions and to reduce dead zones.

[0084] Antenna 60 can be an LDS antenna. LDS antenna technology, officially called "Laser Direct Structuring," is a technology that uses lasers to structure conductive trace patterns directly onto a housing. This technology controls the laser movement via computer, directing the laser onto the housing and quickly activating conductive trace patterns to form a metal antenna on the housing surface through chemical deposition.

[0085] In other embodiments, the antenna 60 of the headphones 100 is not limited to the design described above. For example, the antenna 60 can be an FPC antenna, a PCB antenna, a spring antenna, a ceramic chip antenna, etc.

[0086] Although antennas 60 have a certain degree of durability, they can be damaged by accidental drops, friction, or scratches against other hard objects. To address this issue, in some embodiments, the outer walls of the rear housing part 112B incorporate an additional layer of flexible material. This flexible layer covers the antenna 60. It absorbs and dampens external shocks and friction, thus protecting the antenna 60 and preventing scratches, damage, or impacts. Furthermore, flexible material layers generally offer a better tactile feel, being softer and warmer, which significantly improves the comfort of the headphones and reduces the sensation of a foreign object.

[0087] Specifically, the flexible material layer can be a silicone layer, a thermoplastic polyurethane layer, or a rubber layer that provides a soft tactile feel.

[0088] As in Fig. 4 and Fig. As shown in Figure 8, in some embodiments the headphones 100 also include a feedback microphone 80 arranged in the sound output channel 12a. The feedback microphone 80 and the microphone 70 differ both in their recording position and in the principle of noise cancellation. The feedback microphone 80 is located near the user's ear canal or eardrum. Its position allows it to record the out-of-phase sound waves emitted by the noise-canceling loudspeaker as well as the residual noise remaining in the ear canal after noise cancellation. Based on the residual noise recorded by the feedback microphone, the digital signal processor adjusts the generation of the out-of-phase sound waves in real time to achieve a better noise cancellation effect. Its function focuses more on feedback and correction.

[0089] Furthermore, the feedback microphone 80 is located on the sound output side of the loudspeaker unit 91. Since one of the main functions of the feedback microphone 80 is to pick up the sound generated by the loudspeaker unit 91 and feed it back to the digital signal processor, which cancels out noise by generating out-of-phase sound waves, placing the feedback microphone 80 in the sound output channel 12a on the sound output side of the loudspeaker unit 91 means that it can capture the original sound signal from the loudspeaker most directly and accurately.

[0090] For the voice coil to be energized and move, a current must flow into the voice coil and form a closed circuit within it. Therefore, as in Fig. 9, Fig. 10 and Fig. As shown in Figure 11, the loudspeaker unit 91 also includes power connection pins 912, which are exposed from the housing 911. The power connection pins 912 conduct the external audio signal to the voice coil of the loudspeaker unit 91, causing the voice coil to generate a corresponding mechanical movement in the magnetic field according to the signal change, thus exciting the diaphragm to vibrate. The power connection pins 912 can be understood as voice coil pins; their function remains to ensure that the voice coil pins receive current so that the voice coil can operate.

[0091] In contrast to the prior art, where the loudspeaker unit 91 has its own small printed circuit board (PCBA) with solder pads and the electrical connection is made via wires, with one end of the wire soldered to the solder pads of the PCBA and the other end to the main control board, since the PCBA takes up space and operation in the confined sound output channel 12a is difficult, the loudspeaker unit 91 in these embodiments dispenses with the PCBA. Instead, the power connection pins 912 are exposed directly on the housing 911, as shown in Fig. 12 and Fig. Figure 13 shows that in the first embodiment, the electrical connecting element 95 extends from the feedback microphone 80 to the power connection pins 912, is electrically connected to them, and then extends further into the mounting space 11a, where it is electrically connected to the electrical control board 96. The electrical connecting element 95 is a one-piece, extending flexible printed circuit board. As shown in Fig. 10 and Fig. As shown in Figure 11, in the second embodiment the electrical connecting element 95 comprises a first electrical connecting element 951 and a second electrical connecting element 952. The second electrical connecting element 952 electrically connects the feedback microphone 80 and the electrical control board 96. The first electrical connecting element 951 is connected to the power connection pins 912 and electrically connected to the electrical control board 96 via the second electrical connecting element 952. Both the first electrical connecting element 951 and the second electrical connecting element 952 are flexible printed circuit boards.

[0092] In both the first and second embodiments, the original PCBA of the loudspeaker unit 91 was removed, and the power connection pins 912 were exposed directly on the housing 911. Flexible printed circuit boards (PCBs) can be bent and arranged more flexibly. Flexible PCBs are thinner than PCBAs and can free up more space. The flexibility of flexible PCBs allows them to conform to the irregular interior of the ear housing 10; they can even move partially with the vibration or deformation of the loudspeaker unit 91, which reduces the connection stress caused by vibration and further increases the long-term reliability of the connection.

[0093] By eliminating the space originally required in the loudspeaker unit 91 for the PCBA board and its solder points, this volume and height are completely eliminated. This not only directly reduces the height profile of the loudspeaker unit 91 itself, making it flatter, but also shortens the axial height of the sound outlet 12, allowing it to be designed more compactly and reducing the sensation of sound penetration into the ear canal.

[0094] Specifically, as in Fig. 12 and Fig. Figure 13 shows that, in the first embodiment, the flexible printed circuit board is designed as a single, extending piece. Only a few connection steps are required during assembly, reducing assembly cost. The integrated design minimizes impedance changes and signal loss in the signal transmission path, potentially improving transmission efficiency and sound quality of the audio signal. As shown in Fig. 10 and Fig. As shown in Figure 11, in the second embodiment the electrical connection element 95 is divided into two parts, so that the first electrical connection element 951 and the second electrical connection element 952 can be positioned independently of each other according to the actual space requirements. The first electrical connection element 951 can be placed close to the power connection pins 912 to reduce signal loss, while the second electrical connection element 952 can optimize the connection path to the electrical control board 96. If the feedback microphone 80 or the connection area 922 of the power connection pins 912 needs to be replaced, only the corresponding flexible circuit board needs to be replaced without having to redesign the entire circuit.

[0095] As in Fig. As described in Figure 11, in some embodiments a protective lacquer 98 is additionally applied at the connection point between the electrical connecting element 95 and the power connection pins 912. The protective lacquer 98 is applied to a side of the electrical connecting element 95 facing away from the housing 911. Although the solder joints of the power connection pins 912 and the electrical connecting element 95 establish the electrical connection, this connection point can be subjected to mechanical stresses (e.g., bending, pressure, vibration) during normal use of the headphones 100.After curing, the protective lacquer 98 firmly bonds the solder joints, the power connection pins 912, and part of the first electrical connecting element 951 together, forming a single unit. This significantly increases the mechanical strength of the connection and prevents the solder joints from cracking or the pins from loosening due to vibration or stress, thereby improving the long-term reliability of the connection. Furthermore, the cured protective lacquer 98 forms an insulating layer that prevents the solder joints or power connection pins 912 from accidentally coming into contact with other conductive parts and causing short circuits.

[0096] Since the inner diaphragm of the loudspeaker unit 91 moves back and forth during operation, causing pressure variations within the housing, a completely closed housing would create pressure that hinders the diaphragm's movement, restricts its freedom of movement, and thus impairs sound quality. Therefore, the housing 911 of the loudspeaker unit 91 also features a loudspeaker tuning port. This port effectively equalizes the pressure inside and outside the housing. This design prevents pressure buildup from hindering the diaphragm's movement, allowing it to move more freely and improving the clarity and dynamic range of the sound.

[0097] With reference to Fig. 11. Corresponding to the loudspeaker tuning port, the electrical connecting element 95 also has a recess 951a which corresponds to the position of the loudspeaker tuning port. This allows the electrical connecting element 95 to bypass the position of the loudspeaker tuning port, so that it can be flexibly positioned near the loudspeaker tuning port without impairing its function.

[0098] In some embodiments, the feedback microphone 80 and the loudspeaker unit 91 are spaced apart along the axial direction of the sound output channel 12a. This means that the direction of sound propagation and the physical mounting position of the loudspeaker unit 91 and the feedback microphone 80 are roughly on the same axis. This allows the feedback microphone 80 to accurately detect the sound signal generated by the loudspeaker unit 91, enabling more precise phase compensation and improved noise reduction in active noise cancellation systems, particularly in the suppression of high-frequency noise.

[0099] Furthermore, the distance between the loudspeaker unit 91 and the feedback microphone 80 along the axial direction of the sound output channel 12a is 0.2 mm to 0.5 mm. The structure of the sound outlet 12 itself is relatively narrow. If the distance between the two were greater, this would require more space in the axial direction of the sound output channel 12a, either by lengthening the sound outlet 12 or by compressing the space for other components. Both would directly lead to an increase in the size of the sound outlet 12 or even the entire ear housing 10. By limiting the distance to this very small range of 0.2–0.5 mm, the axial arrangement efficiency within the sound outlet 12 is optimized. This allows the loudspeaker unit 91 and the feedback microphone 80 to be arranged compactly, minimizing their space requirement in the axial direction of the sound output channel 12a.This compact arrangement makes it possible to design the structure of the sound outlet 12 to be shorter and more compact, while at the same time ensuring the acoustic performance (such as the already mentioned precise sound capture).

[0100] As in Fig. 10 and Fig. As shown in Figure 11, the headphones 100 in some embodiments also include a protective mesh 92. The protective mesh 92 is connected to the sound outlet 12 and covers the sound outlet opening 12b. The protective mesh 92 prevents foreign matter (such as dust or dirt) from entering the interior of the ear housing 10 through the sound outlet opening 12b. The protective mesh 92 is electrically connected to the ground terminal of the electronic control board 96. The feedback microphone 80 is also attached to the protective mesh 92. The protective mesh 92 itself serves as a mounting base; specifically, it can be attached to the protective mesh 92 by laser welding. This reduces the need for additional structures used in conventional designs for microphone fixation and sound guidance (such as separate brackets, long cables, etc.), thus saving interior space.

[0101] Continuing from the above, the feedback microphone 80 is connected to the electronic control board 96 via the electrical connecting element 95. The electrical connecting element 95 serves to transmit the audio signal picked up by the feedback microphone 80 from the microphone to the corresponding signal processing connections on the electronic control board 96.

[0102] In these embodiments, the electrical connection element 95 is a flexible printed circuit board. The feedback microphone 80 can be mounted directly onto the flexible printed circuit board using surface-mount technology, which is suitable for mass production and offers high efficiency and reliability.

[0103] The embodiments integrate several components (protective mesh 92, FB MIC, loudspeaker unit 91) and connect them directly to the sound outlet 12. These functional modules are concentrated in a limited space, and the compact arrangement of the feedback microphone 80 on the protective mesh 92 within the sound outlet 12 contributes to the miniaturization of the headphones 100, especially in the confined space of the sound outlet 12, and enables a more efficient integration of the microphones and protective structures required for noise suppression without significantly increasing the overall dimensions.

[0104] Since the feedback microphone 80 is located near the sound outlet 12b, which represents the direct point of contact between the headphones 100 and the outside world for the exchange of air and sound, this is also the point where static electricity is most likely to penetrate. If a user accidentally touches the sound outlet 12b with an electrostatically charged finger or other object, the static electricity can directly affect the feedback microphone. Feedback microphones 80 are micro-microphones whose sensitive components (such as the diaphragm and amplifier circuitry) are highly sensitive to static electricity. Even a tiny electrostatic pulse can lead to a loss of performance or even the complete failure of the feedback microphone 80.

[0105] Therefore, in these embodiments, the protective mesh 92 is electrically connected to the grounding terminal of the electrical control board 96. The protective mesh 92 can be made of metal or a conductive material that can readily conduct electrostatic charges. That is, the protective mesh 92 is designed as a conductive material (such as a metal grid or coated mesh) that collects electrostatic charges and conducts them to the grounding terminal of the electrical control board 96. This grounding design allows the static electricity acting on the protective mesh 92 to be dissipated to a safe grounding point, thus preventing the static electricity from directly affecting or penetrating the feedback microphone 80 mounted on the protective mesh 92 and ensuring effective protection of the microphone component against electrostatic damage. This increases the electrostatic resistance of the headphones 100 and the overall service life of the product.

[0106] When the protective net 92 is grounded, it can also form effective electromagnetic shielding and reduce interference with the internal circuitry caused by external electromagnetic waves. This is particularly important for the feedback microphone 80, as microphones must capture ambient noise with high precision, and electromagnetic interference can impair noise cancellation performance.

[0107] Specifically, the protective mesh 92 is a protective steel mesh. Protective steel meshes have high strength and toughness, effectively protecting against damage from vibrations, external impacts, or accidental bumps during daily use, thus ensuring the stability and durability of the protective steel mesh over the long term. Additionally, protective steel effectively conducts static electricity, thereby reducing its direct impact on the feedback microphone 80.

[0108] In these embodiments, the protective mesh 92 is grounded to the ground terminal of the electronic control board 96 via the electrical connecting element 95. Static electricity initially acts on the protective mesh 92. The protective mesh 92 itself, or its conductive part, becomes the first point of contact or induction of the static electricity. The protective mesh 92 is connected to the electronic control board 96 inside the headphones 100 via a predefined electrical connecting element 95. The charge flows through the electrical connecting element 95 and finally reaches the ground terminal of the electronic control board 96 (which typically contains critical circuits such as processing chips, power management, amplifiers, etc.).The static electricity is effectively diverted into a safe area, preventing it from accumulating to the point where it could damage the highly sensitive feedback microphone 80, thus protecting the feedback microphone 80 from electrostatic destruction.

[0109] This avoids the need to create separate additional connection paths or structures solely for grounding, which saves space, especially in the sound outlet 12, where space is typically limited.

[0110] As in Fig. 10 and Fig. As shown in Figure 11, in some embodiments the headphones 100 also includes a reinforcement plate 94. The reinforcement plate 94 is mounted in the sound output channel 12a and connected to the protective mesh 92. The feedback microphone 80 is mounted on the reinforcement plate 94. The reinforcement plate 94 provides additional support for the feedback microphone 80 and can effectively prevent the feedback microphone 80 from losing its position or being damaged during use of the headphones 100 due to mechanical vibrations or external forces.

[0111] In practical applications, the electrical connection is generally made by soldering. If the electrical connecting element 95 were soldered directly to the protective mesh 92, cracks, so-called "tin cracks," could easily occur at the solder joints (tin points) during the soldering process or in use, due to the thinness and softness of the protective mesh 92. This phenomenon of tin cracks would compromise the stability of the electrical connection and impair the performance and reliability of the headphones 100.

[0112] Therefore, in these embodiments, the reinforcement plate 94 is electrically connected to the electrical connector 95. The reinforcement plate 94 supports the portion of the electrical connector 95 on which the feedback microphone 80 is mounted. The reinforcement plate 94 can be made of a harder metal and provides stronger support than the protective mesh 92. During the soldering process, the stresses acting on the solder joints (tin points) are distributed, thereby reducing the risk of cracking due to stress concentrations. This ensures the stability of the entire internal structure of the sound outlet 12 during use and reduces damage from mechanical vibrations or external forces.

[0113] Furthermore, the amplification plate 94 is electrically connected to the electrical connecting element 95 to connect the protective mesh 92 to the grounding lead of the electrical control board 96. This means that the amplification plate 94 not only provides mechanical support to the protective mesh 92, but also serves to dissipate electrostatic charge. Electrostatic charge is generated and conducted to the protective mesh 92 of the headphones 100. The electrostatic charge then conducts via the protective mesh 92 to the second amplification plate 94 and from there to the electrical connecting element 95. The electrical connecting element 95 then conducts the electrostatic charge to the grounding lead of the electrical control board 96, where it is discharged via the grounding lead to the electrostatic protection circuit on the electrical control board 96.

[0114] Furthermore, the feedback microphone 80 is mounted on the side of the amplification plate 94 facing the protective mesh 92. This allows for optimal use of the space between the amplification plate 94 and the protective mesh 92, thus avoiding structural conflicts or excessive space requirements due to an unsuitable position of the feedback microphone 80 and further optimizing the compact design of the headphones 100. Additionally, placing the microphone on the side of the amplification plate 94 facing the protective mesh 92 ensures that the feedback microphone 80 is closer to the sound source (such as the ear canal), improving the accuracy and sensitivity of signal pickup.

[0115] Specifically, the reinforcement plate 94 is a stainless steel plate. Stainless steel plates have good corrosion resistance, effectively resisting the attack of sweat, moisture, and other corrosive substances in daily use. This extends the service life of the reinforcement plate 94 and ensures its long-term stable support and conductivity. Furthermore, stainless steel effectively conducts and quickly dissipates electrostatic charges, thus improving the electrostatic protection of the headphones 100.

[0116] The thickness of the stainless steel plate can range from 0.1 cm to 0.2 cm. If the thickness is less than 0.1 cm, its strength decreases, and it becomes more prone to bending, deformation, or even damage during use. If the thickness exceeds 0.2 cm, its weight and material costs increase. An excessively thick stainless steel plate detracts from the miniaturization and slim design of the Headphone 100. A thickness between 0.1 cm and 0.2 cm represents a good compromise, ensuring sufficient strength and protective properties without causing problems in processing, assembly, or cost due to over- or under-sizing.

[0117] As in Fig. As shown in Figure 14, in some embodiments the sound outlet 12 on the inner wall of the sound output channel 12a has a limiting groove 12c at one end near the sound outlet opening 12b. The limiting groove 12c is annular and provides a precise mounting position. The protective mesh 92 is recessed into the limiting groove 12c and connected to its groove wall. Specifically, the protective mesh 92 can be attached to the groove wall of the limiting groove 12c, for example, by gluing it in order to securely fix it to the sound outlet 12 and prevent easy movement, tilting, or detachment. This also increases the resistance of the protective mesh 92 to external impacts (e.g., accidental scratching by the user). Even under a certain amount of force, the protective mesh 92 is less likely to be damaged or deformed, which increases the product's durability.

[0118] As in Fig. 14 and Fig. As shown in Figure 15, the protective net 92 comprises a protective area 921 and a connecting area 922. The protective area 921 is net-shaped and closes the sound outlet opening 12b. It is understood that the net structure of the protective area 921 allows unimpeded sound transmission, ensures that sound can be transmitted from the interior to the user's ear canal, and allows the feedback microphone 80 to detect external sound. The connecting area 922 is arranged in a ring shape at the edge of the protective area 921. The connecting area 922 extends from the connection point with the protective area 921 towards the side facing away from the sound outlet opening 12b. The connecting area 922 can be uniformly and continuously serrated.This design not only increases the contact area between the connection area 922 and the groove wall of the limiting groove 12c, but also, due to its unique shape, distributes stresses so that, in the event of force or vibrations acting on the protective mesh 92, the stresses are distributed evenly, thus preventing damage due to local stress concentrations. The connection area 922 is located within the perimeter of the protective area 921 and connected to the groove wall of the limiting groove 12c. Continuing the above, the protective mesh 92 is bonded to the groove wall of the limiting groove 12c via the connection area 922, ensuring a firm, multi-point, and uniform contact and a stable connection between the protective mesh 92 and the limiting groove 12c.

[0119] As in Fig. 14 and Fig. As shown in Figure 15, the connection area 922 comprises a circumferential flange 9221 connected to the protective area 921. The flange 9221 is arranged in a ring around the circumference of the protective area 921 and extends towards one side facing away from the sound outlet opening 12b. The flange 9221 has several serrations arranged evenly and spaced around its circumference. The serration structure increases the contact area and friction between the flange 9221 and the groove wall of the limiting groove 12c. Furthermore, the serration structure forms a similar locking effect with the groove wall of the limiting groove 12c, anchoring it more firmly in the groove wall and preventing the protective mesh 92 from loosening, detaching, or rotating due to vibrations, external forces, or minimal movements during use. Compared to a smooth flange 9221, the serrations provide a stronger locking force.

[0120] As in Fig. 14 and Fig. As shown in Figure 15, the protective mesh 92 further comprises a support area 923. The support area 923 extends within the sound output duct 12a from the connection area 922 towards the main housing 11. One end of the support area 923, which is furthest from the connection area 922, is bent towards the center position of the centerline of the sound outlet opening 12b. The reinforcement plate 94 is mounted on the support area 923. Understandably, the reinforcement plate 94 and the protective area 921 are arranged axially spaced apart along the sound output duct 12a. A portion of the support area 923, which is connected to the reinforcement plate 94, is arranged parallel to the protective area 921. Therefore, the support area 923 as a whole resembles a structure that originates from the connection area 922, initially extends roughly axially, then bends inwards (towards the center) halfway along and finally provides a connection surface parallel to the reinforcement plate 94.This provides the reinforcement plate 94 with an ideal, stable mounting base. This parallel design ensures that the reinforcement plate 94 distributes stresses evenly and can work better with the support area 923 and the entire protective net 92 to maximize the reinforcing effect.

[0121] As in Fig. 14 and Fig. As shown in Figure 15, the support area 923 specifically comprises two support feet 9231, which are arranged radially opposite the protective area 921. Accordingly, the reinforcement plate 94 comprises a connecting plate 941 and two support plates 942. The connecting plate 941 is electrically connected to the electrical connecting element 95 and supports the feedback microphone 80. The feedback microphone 80 is connected to one side of the reinforcement plate 94 that faces the protective area 921. The two support plates 942 are each connected to both ends of the connecting plate 941 and extend to both sides to be connected to the two support feet 9231.The opposing arrangement of the two support feet 9231 and the two support plates 942 forms a stable support structure that effectively prevents the reinforcement plate 94 from slipping or tipping during use due to vibrations or external forces, thus increasing the stability of the internal structure of the sound outlet 12.

[0122] To further increase the stability of the support area 923, the sound outlet 12 on the inner wall of the sound outlet duct 12a also features a positioning groove 12d connected to the limiting groove 12c. Part of the structure of the support area 923 engages in the positioning groove 12d. This increases the fixing accuracy of the support area 923 to the inner wall of the sound outlet 12 and ensures that the support area 923 does not slip during the installation process, thus guaranteeing the assembly accuracy of the entire assembly. Furthermore, the positioning groove 12d provides a clear installation position for the support area 923, which can reduce quality problems due to improper assembly.

[0123] Continuing the above, the two support feet 9231 correspond to two positioning grooves 12d, which are also arranged radially opposite each other. When the protective net 92 attempts to rotate around the center point of the sound outlet opening 12b, the parts of the support area 923 that engage in the positioning grooves 12d form an obstruction. Therefore, the protective net 92 cannot rotate freely in the limiting groove 12c, thus fixing it in a specific position within the limiting groove 12c.

[0124] Accordingly, the protective net 92 is connected to the reinforcement plate 94 via the support area 923, so that the reinforcement plate 94 cannot rotate in the sound output channel 12a. The electrical connection element 95 attached to it can also be held relatively securely, which prevents the electrical connection element 95 from being damaged, broken, or impaired in its performance by repeated bending or accidental rotation, and increases the reliability of the connection.

[0125] It should be noted that the positioning groove 12d has a guide ramp. The guide ramp is inclined away from the central axis of the sound output channel 12a and towards the sound outlet opening 12b. When the support area 923 is to engage in the positioning groove 12d, it initially encounters the far end of the guide ramp. Since the ramp is a guide ramp, the support area 923 can be "guided" or "slid" along this ramp into the deeper position of the positioning groove 12d. In this way, the support area 923 can slide relatively easily and smoothly into the predetermined position of the positioning groove 12d and ultimately wedge itself in place.

[0126] As in Fig. 12 and Fig. As shown in Figure 13, the feedback microphone 80 cannot be supported by the protective mesh 92. In some embodiments, the loudspeaker unit 91 also includes a support bracket 913 attached to the housing 911. The support bracket 913 is located on the sound-emitting side of the loudspeaker unit 91 and extends towards the sound outlet opening 12b. The feedback microphone 80 is attached to the support bracket 913. This positions the feedback microphone 80 very close to the sound source (loudspeaker diaphragm). As already mentioned, the proximity to the sound-emitting side of the loudspeaker unit 91 helps to accurately capture the loudspeaker signal, optimize active noise cancellation, and suppress feedback. In addition, the direct integration of the feedback microphone 80 into the loudspeaker unit 91 increases the integration density of the components.This is particularly advantageous for miniaturizing and reducing the weight of the headphone design 100, as various components can be arranged more efficiently in a limited space.

[0127] Specifically, two support brackets 913 are provided, arranged radially opposite each other on the housing 911. The support bracket 913 comprises a support arm 9131 and a limiting arm 9132, which are connected to each other. The support arm 9131 is attached to the housing 911 and extends towards the sound outlet opening 12b. The limiting arm 9132 has a support groove 9132a. The two support plates 942 of the reinforcement plate 94 can each be inserted into the two support grooves 9132a. Mounting the feedback microphone 80 on the reinforcement plate 94 instead of directly on the support bracket 913 allows for better distribution of the weight of the feedback microphone 80 and any minute vibrations, and prevents the support bracket 913 from deforming or being damaged by long-term stress or vibration.Two support beams 913 allow the weight of the reinforcement plate 94 and the feedback microphone 80 to be distributed more evenly, which increases the structural stability and deformation resistance of the entire assembly.

[0128] The feedback microphone 80 is mounted on one side of the reinforcement plate 94, which faces the loudspeaker unit 91. This allows optimal use of the space between the two support arms 9131, making the structural arrangement in the sound outlet 12 more compact and shortening the axial length of the sound outlet 12.

[0129] As in Fig. As shown in Figure 14, in some embodiments the headphones 100 also includes a second tuning mesh 972. The second tuning mesh 972 is attached to the inside of the protective mesh 92 and covers the openings 92a in the protective mesh 92. The size and dimensions of the protective mesh 92 and the second tuning mesh 972 are matched to each other. The second tuning mesh 972 covers one side of the protective mesh 92 facing the feedback microphone 80. It is understood that the main function of the second tuning mesh 972 is to further block the ingress of dust and fine particles into the interior of the headphones 100 in order to protect the internal components—the feedback microphone 80 and the loudspeaker unit 91. This reduces the risk of failure due to dust accumulation or the ingress of foreign objects and extends the service life of the headphones 100.

[0130] It is understood that the openings 92a of the protective mesh 92 are larger compared to the meshes of the secondary tuning mesh 972. The main function of the protective mesh 92 is to prevent larger foreign objects from entering the interior of the headphones 100, and it possesses a certain degree of mechanical strength to withstand external impact forces. The secondary tuning mesh 972 has several smaller meshes and offers finer protection. The combination of the protective mesh 92 and the secondary tuning mesh 972 provides multi-stage protection and ensures that the internal components of the headphones 100 are adequately protected in various application scenarios. The protective mesh 92 blocks larger foreign objects and liquids, while the secondary tuning mesh 972 continues to prevent dust and fine particles from entering. This multi-stage protection concept can effectively reduce the risk of failure due to dust and foreign objects.

[0131] The second tuning mesh 972 can consist of non-woven fabric, nylon mesh, or polyester fiber mesh, which has good air permeability and dust protection properties while simultaneously allowing sound transmission.

[0132] Furthermore, the protective mesh 92, the protective mesh 92, and the flexible circuit board housing the feedback microphone 80 undergo modular processing, meaning they are processed and assembled together. Integrating these three components at an early stage of manufacturing eliminates the need for subsequent assembly of the individual parts during the final assembly of the headphones 100. This can reduce the complexity and time required for downstream assembly and simplify the final assembly process.

[0133] As in Fig. 1 to Fig.As shown in Figure 3, in some embodiments the headphones 100 further include an ear cap 30. The ear cap 30 is fitted over the sound outlet 12. The ear cap 30 has a through-hole 30b that is opposite the sound outlet opening 12b. The sound outlet 12 has an annular projection 121. The ear cap 30 has an annular recess 31 corresponding to the annular projection 121. The interaction of the annular projection 121 and the annular recess 31 engages the ear cap 30 with the sound outlet 12. This effectively secures the ear cap 30 to the sound outlet 12 and prevents the ear cap 30 from accidentally coming loose or shifting during use (e.g., during sports activities or head movements).

[0134] The earplug (size 30) is typically made of soft silicone or similar materials. The soft earplug provides a more comfortable fit and reduces direct irritation of the ear canal. Earplugs in various sizes can adapt to the ear canal sizes of different users, further improving comfort and fit.

[0135] When the headphones 100 are worn by the user and the earcup 30 fits snugly against the ear, a pressure difference can occur between the inside and outside. This pressure difference can exert some pressure on the eardrum and lead to discomfort. Additionally, the pressure can cause impact on the components in the sound outlet 12 and potentially damage them, for example, by deforming the diaphragm of the speaker unit 91, which in turn would negatively affect the sound quality of the headphones 100.

[0136] To solve this problem, the inner wall of the ear cup 30 has a pressure relief groove 30a. A pressure relief channel 10a runs along the outer wall of the sound outlet 12 and the main body 111A, connected to the pressure relief groove 30a. The pressure relief channel 10a runs in the axial direction of the sound outlet 12, penetrates the annular projection 121, and extends to a portion of the front housing side surface 111B2, where the charging area 40 is attached. It is understood that the pressure relief channel 10a is connected to the outside. When a pressure difference arises between the inside and outside, air from the ear canal can flow through the through-hole 30b into the pressure relief groove 30a and begins to flow outwards. Along the pressure relief channel 10a at sound outlet 12 and main body 111A, it is connected to the outside world.This reduces fatigue or discomfort from wearing the garment, which can be caused by pressure problems.

[0137] In the description of the invention, it is understood that terms such as "top," "bottom," "left," "right," or similar expressions indicating directions or positional relationships are based on the directions or positional relationships depicted in the drawings. This terminology serves solely to facilitate and simplify the description of the invention. It does not indicate, nor does it imply, that the described devices or components must necessarily have a specific orientation, be constructed in a specific orientation, or be operated in a specific orientation. Consequently, the terms used in the drawings to describe positional relationships serve only as examples and should not be interpreted as limiting the invention.For the expert in this field, the specific meanings of the above-mentioned terms can be understood depending on the specific circumstances.

[0138] Furthermore, the terms "first," "second," etc., serve only descriptive purposes and should not be interpreted as implying relative importance or specifying the number of technical features listed. Features designated as "first," "second," etc., may explicitly or implicitly include one or more of these features. In the description of the invention, "several" means at least two, for example, two, three, etc., unless expressly defined otherwise.

[0139] In the description of the invention, unless expressly defined or limited otherwise, terms such as "assemble," "connect," "fasten," "fix," etc., are to be understood broadly. For example, they may refer to a permanent connection, a detachable connection, or an integration; a mechanical connection or an electrical connection; a direct connection or an indirect connection via a medium; a connection between two elements or an interaction between two elements, unless expressly limited. For a person skilled in the art, the specific meanings of the aforementioned terms in the invention can be understood according to the specific circumstances.

[0140] It should be noted that when an element is described as being "attached" or "attached" to another element, it may be located directly on top of that element, or intermediate elements may be present. Similarly, when an element is described as being "connected" to another element, it may be directly connected to it, or intermediate elements may be present. Terms used in this document, such as "vertical," "horizontal," "top," "bottom," "left," "right," and similar expressions, are for illustrative purposes only and do not represent a specific embodiment.

[0141] The foregoing content represents only specific embodiments. However, the scope of protection is not limited thereto. Any expert in this field can easily conceive of modifications or substitutions within the disclosed technical scope that should fall within the scope of protection. Therefore, the scope of protection of the invention should be governed by the scope of protection of the claims.

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