A headset

Abstract

An earphone includes an ear hook and a sound-generating part. In the wearing state, the battery compartment of the ear hook is positioned between the user's ear and head, and the sound-generating part is worn near the user's ear canal without obstructing it. The battery compartment includes a battery assembly, a circuit board assembly, and a second housing. In the wearing state, an antenna structure is located on the outer wall of the second housing on the side furthest from the user's skin. The circuit board assembly electrically connects the antenna structure and the battery assembly. On one hand, by placing the antenna structure on the side of the ear hook furthest from the user's skin, the antenna structure can be prevented from being blocked during wear, improving the antenna's radiation efficiency and ensuring the sensitivity of the antenna's signal reception. On the other hand, placing the battery assembly, circuit board assembly, and antenna structure on the ear hook can shorten the connection distance between the antenna and the circuit board assembly, improving the antenna's anti-interference capability, and allowing for a larger design size for the earphone's sound-generating device, thus supporting improved earphone performance.

Description

[0001] This application claims priority to Chinese application No. 202411844133.7, filed on December 15, 2024, the contents of which are incorporated herein by reference in part. Technical Field

[0002] This application relates to the field of acoustic technology, specifically to a type of headphone. Background Technology

[0003] Headphones have become an indispensable tool in people's daily lives and work. They can be used with mobile phones, computers, and other terminal devices to provide users with an auditory feast. As users' demands for headphones continue to increase, in addition to stable output performance, the rationality of the headphone's structural layout and other factors are also important factors affecting headphone performance. Utility Model Content

[0004] The main technical problem this application addresses is providing an earphone, including:

[0005] The sound-generating part includes a sound-generating assembly and a first housing housing the sound-generating assembly; and

[0006] The ear hook includes a connecting part and a battery compartment, wherein the connecting part is connected between the battery compartment and the sound-emitting part; in the wearing state, the battery compartment is hung between the user's ear and head, and the sound-emitting part is worn near the user's external auditory canal but does not block the external auditory canal;

[0007] The battery compartment includes a battery assembly, a circuit board assembly, and a second housing that houses the battery assembly and the circuit board assembly. When worn, the outer side of the second housing away from the user's skin is provided with an antenna structure. The circuit board assembly is electrically connected to the antenna structure, the battery assembly, and the sound-generating assembly.

[0008] In one embodiment, the antenna structure includes a radiating part, and a hollowed-out slit is provided in the middle of the radiating part.

[0009] In one embodiment, the battery compartment has a length direction and a circumferential direction around the length direction, the length direction being defined as the direction in which the battery compartment approaches or moves away from the connecting portion; wherein, the length of the radiating portion in the length direction is greater than its width in the circumferential direction, and the perforated slit extends along the long side of the radiating portion.

[0010] In one embodiment, the distance from the edge of the radiating portion to the perforated slit is greater than 0.1 mm in the length direction.

[0011] In one embodiment, the antenna structure further includes a feed section, one end of which is connected to the edge of the radiating section, and the other end of which is electrically connected to the circuit board assembly.

[0012] In one embodiment, the power supply section and the radiating section are an integral structure.

[0013] In one embodiment, the circuit board assembly is provided with a feed point structure, which is electrically connected to the antenna structure.

[0014] In one embodiment, the second housing includes a housing portion and a cover portion having the outer side wall. The housing portion has a receiving cavity and an opening communicating with the receiving cavity. The circuit board assembly and the battery assembly are housed in the receiving cavity. The cover portion covers the opening and is connected to the housing portion. The feed point structure is disposed on the side of the circuit board assembly facing the cover portion.

[0015] In one embodiment, the feed point structure includes an elastic element having a fixed end and a free end movable relative to the fixed end. The fixed end of the elastic element is fixed to the circuit board assembly, and the free end of the elastic element is elastically electrically connected to the antenna structure.

[0016] In one embodiment, the antenna structure includes a conductive sheet attached to and fixed to the outer sidewall, or the antenna structure includes a conductive pattern formed on the outer sidewall.

[0017] In one embodiment, an air-avoidance area is formed inside the second housing on one side of the circuit board assembly, and at least a portion of the antenna structure is located on the outer wall corresponding to the air-avoidance area.

[0018] In one embodiment, the battery compartment further includes a metal reflector disposed within the air-avoidance area, facing the antenna structure.

[0019] In one embodiment, the battery compartment further includes an insulating protective element disposed between the metal reflector and the antenna structure.

[0020] In one embodiment, the battery assembly is at least partially located within the air-protected area, the battery assembly including a battery body and a metal housing housing the battery body, the metal housing including the metal reflector.

[0021] In one embodiment, the battery compartment has a length direction, defined as the direction in which the battery compartment approaches or moves away from the connector; wherein, in the length direction, the circuit board assembly is closer to the connector than the battery assembly.

[0022] In one embodiment, the circuit board assembly includes a plurality of rigid circuit boards stacked together, with adjacent rigid circuit boards connected by flexible circuit boards.

[0023] In one embodiment, at least a portion of the antenna structure bends and extends from the outer wall into the clearance zone.

[0024] An earphone according to the above embodiment includes an ear hook and a sound-generating part. In the wearing state, the battery compartment of the ear hook is positioned between the user's ear and head, and the sound-generating part is worn near the user's ear canal without blocking the ear canal opening. The battery compartment includes a battery assembly, a circuit board assembly, and a second housing. In the wearing state, the outer wall of the second housing, on the side away from the user's skin, has an antenna structure. The circuit board assembly electrically connects the antenna structure and the battery assembly. On one hand, by placing the antenna structure on the side of the ear hook away from the user's skin, the antenna structure can be prevented from being blocked in the wearing state, improving the antenna's radiation efficiency and ensuring the sensitivity of the antenna's signal reception. On the other hand, placing the battery assembly, circuit board assembly, and antenna structure on the ear hook can shorten the connection distance between the antenna and the circuit board assembly, improving the antenna's anti-interference capability, and allowing for a larger design size for the earphone's sound-generating device, thus supporting improved earphone performance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the outline of the front side of the ear as described in this application.

[0026] Figure 2 This is a schematic diagram illustrating the wearing state of the earphones when worn on the ear, according to one embodiment.

[0027] Figure 3 This is a schematic diagram of the overall outline structure of an earphone according to one embodiment.

[0028] Figure 4 This is a schematic diagram of the internal structure of an earphone with the housing omitted, according to one embodiment.

[0029] Figure 5 This is a schematic diagram of the system architecture of an earphone according to one embodiment.

[0030] Figure 6 This is a schematic diagram of the ear hook structure in one embodiment of an earphone.

[0031] Figure 7 This is an exploded view of the battery compartment in an earphone according to one embodiment.

[0032] Figure 8 This is a schematic diagram of the antenna structure in an earphone according to one embodiment.

[0033] Figure 9 for Figure 8A schematic diagram of the return loss curve of the antenna structure.

[0034] Figures 10A to 10E This is a schematic diagram showing the relative positional relationship between the antenna structure and the circuit board assembly in some embodiments.

[0035] Figure 11 for Figures 10A to 10E A schematic diagram of the radiation efficiency of the corresponding antenna structure.

[0036] Figure 12 This is a schematic diagram of the circuit board assembly in an earphone according to one embodiment.

[0037] Figure 13 This is a schematic diagram of the structure of the connecting part in an earphone according to one embodiment.

[0038] Figure 14 This is a schematic diagram of the sound-producing part in an earphone according to one embodiment (I).

[0039] Figure 15 This is a schematic diagram (II) of the structure of the sound-producing part in an earphone according to one embodiment.

[0040] Figure 16 This is an exploded view of the sound-producing part in an earphone according to one embodiment.

[0041] Figure 17 This is a schematic diagram of an exemplary structural architecture of a speaker in an earphone according to one embodiment (I).

[0042] Figure 18 This is a schematic diagram (II) of an exemplary structural architecture of a speaker in an earphone according to one embodiment.

[0043] Figure 19 This is a schematic diagram of the structure of the flexible wall of the sound-emitting part in an earphone according to one embodiment.

[0044] In the picture:

[0045] 10. Sound-emitting part; 11. First housing; 11-1. First sidewall; 11-2. Second sidewall; 11-3. Third sidewall; 11-4. Fourth sidewall; 11-5. First sound outlet; 11-6. Second sound outlet; 11-7. Second pickup hole; 11-8. Third pickup hole; 11-9. Protruding structure; 12. Loudspeaker; 12-1. Magnetic circuit assembly; 12-2. First diaphragm; 12-3. Second diaphragm; 12-4. First voice coil; 12-5. Second voice coil; 12-6. Third voice coil; 12-7. Second connector; 13. First microphone; 14. Second microphone; 15. Third microphone; 16. Flexible wall; 16-1. Contact layer; 16-2. Inner lining layer;

[0046] 20. Battery compartment; 21. Second housing; 21-1. Inner wall; 21-2. Outer wall; 21-3. Housing section; 21-4. Cover plate section; 22. Circuit board assembly; 22-1. Elastic element; 22-2. Rigid circuit board; 22-3. Flexible circuit board; 23. Battery assembly; 23-1. Metal reflector; 24. Antenna structure; 24-1. Radiating part; 24-2. Feeding part; 24-3. Hollowed-out gap; 25. Wear detection structure; 26. Insulating protective component;

[0047] 30. Connecting part; 31. Third housing; 31-1. Adapter inner housing; 31-2. Adapter outer housing; 32. Interaction button; 33. Adapter circuit board;

[0048] 101. External auditory canal; 102. Cavum conchae; 103. Cymba conchae; 104. Triangular fossa; 105. Antihelix; 106. Scaphoid fossa; 107. Helix; 108. Auricle; 109. Crura helix; P1. Region 1; P2. Region 2; P3. Region 3. Detailed Implementation

[0049] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0050] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0051] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0052] Figure 1This is a schematic diagram illustrating the physiological structure of an exemplary ear, based on headphones provided in some embodiments of this application. Please refer to [link / reference]. Figure 1 The exemplary ear may include physiological parts such as the external auditory canal 101, the concha 102, the cymba conchae 103, the triangular fossa 104, the antihelix 105, the scaphoid fossa 106, the helix 107, the earlobe 108, and the crus of the helix 109. Although the external auditory canal 101 has a certain depth and extends to the tympanic membrane of the ear, unless otherwise specified, the external auditory canal 101 can be understood as its entrance (i.e., the ear canal) away from the tympanic membrane. Furthermore, the physiological parts such as the concha 102, the cymba conchae 103, and the triangular fossa 104 have a certain volume and depth in three-dimensional space, and the concha 102 is directly connected to the external auditory canal 101, that is, it can be simply regarded as the aforementioned ear canal being located at the bottom of the concha 102.

[0053] Regarding the headphones provided in some embodiments of this application, stable wearing of the headphones can be achieved by means of one or more physiological parts of the ear.

[0054] For example, since the external auditory canal 101, concha 102, cymba concha 103, triangular fossa 104, and other physiological parts have a certain depth and volume in three-dimensional space, they can meet the requirements for stable wearing of the headphones. When the headphones are in the wearing state, the entire or part of the headphone structure can contact the upper part of the external auditory canal 101 (such as one or more physiological parts such as cymba concha 103, triangular fossa 104, antihelix 105, scaphoid 106, helix 107, crus of helix 109, etc.); when the headphones are in the wearing state, the entire or part of the headphone structure can also be located within one or more physiological parts of the ear, for example, located in Figure 1 The first region P1, enclosed by the dashed line, includes at least the auricular sac 103 and the triangular fossa 104. For example, located in... Figure 1 The second region P2, enclosed by the dashed line, contains at least the concha cavity 102.

[0055] For example, when the headphones are in the wearing state, the entire or part of the headphone structure may also be located on the front side of the helix foot 109, for example Figure 1 Within the third region P3 enclosed by the dashed line.

[0056] Due to individual differences among users, ears may vary in shape, size, and other dimensions. To facilitate description and understanding, and to minimize or even eliminate these individual differences, unless otherwise specified, this application primarily uses an ear model with a "standard" shape and size as a reference to describe the structure of the headphones in different embodiments and how they are worn on that ear model. For example, a simulator (such as GRAS 45BC KEMAR) containing a head and its (left and right) ears can be manufactured based on ANSI:S3.36, S3.25, and IEC:60318-7 standards as a reference for wearing headphones, thus representing the scenario of most users normally wearing headphones.

[0057] Therefore, descriptions such as "user wearing," "in wearing state," and "under wearing state" in this application can refer to the headphones described in this application being worn on the ears of the aforementioned simulator. Of course, considering the individual differences among different users, the structure, shape, size, thickness, etc. of one or more parts of the ear can be differentiated according to different ear shapes and sizes. These differentiated designs can be manifested in the characteristic parameters of one or more parts of the headphones having different ranges of values ​​to adapt to different ears.

[0058] It should be noted that in fields such as medicine and anatomy, the human body can be defined by three basic planes: the sagittal plane, the coronal plane, and the horizontal plane, as well as three basic axes: the sagittal axis, the coronal axis, and the vertical axis.

[0059] In this context, the sagittal plane is a section perpendicular to the ground along the anteroposterior direction of the body, dividing the body into left and right parts; the coronal plane is a section perpendicular to the ground along the lateral direction of the body, dividing the body into anterior and posterior parts; and the horizontal plane is a section parallel to the ground along the vertical direction of the body, dividing the body into superior and inferior parts. Correspondingly, the sagittal axis is the axis along the anteroposterior direction of the body and perpendicular to the coronal plane, the coronal axis is the axis along the lateral direction of the body and perpendicular to the sagittal plane, and the vertical axis is the axis along the vertical direction of the body and perpendicular to the horizontal plane.

[0060] Furthermore, the "front side of the ear" mentioned in this application is a concept relative to "back side of the ear." The former refers to the side of the ear away from the head, while the latter refers to the side of the ear facing the head; both refer to the user's ear. Specifically, by observing the ear of the simulator along the direction of the human coronal axis, one can obtain... Figure 1 The diagram shows the front outline of the ear.

[0061] It should be noted that the above description of the ear is for illustrative purposes only and is not intended to limit the scope of this application. Those skilled in the art can make various changes and modifications based on the description in this application, and such changes and modifications still fall within the protection scope of this application.

[0062] Please see Figures 2 to 19 Some embodiments of this application provide headphones, including a sound-emitting part 10 and an ear hook; wherein, please refer to Figure 2 and Figure 3 The ear hook includes a battery compartment 20 and a connecting portion 30, with the connecting portion 30 connecting the battery compartment 20 and the sound-emitting portion 10. In the wearing state, the battery compartment 20 can be located between the back of the user's ear and their head, and the sound-emitting portion 10 can be located in front of the ear. For example, please refer to... Figure 2 When worn, the battery compartment 20 is positioned between the back of the user's ear and head. The connecting part 30 is connected to the battery compartment 20 and extends to the side of the ear away from the head, connecting to the sound-emitting part 10. The sound-emitting part 10 is worn near the external auditory canal 101 without blocking its position. It should be noted that due to individual differences among users, when the headphones are worn by different users, the sound-emitting part 10 may partially cover the external auditory canal 101, but the external auditory canal 101 will still not be blocked. This will be explained in detail below.

[0063] Please see Figure 4 and Figure 5 as well as Figures 14 to 16 The sound-emitting part 10 includes a sound-emitting component and a first housing 11 that houses the sound-emitting component. The sound-emitting component may include a speaker 12, one or more microphones, etc. The speaker 12 is disposed inside the first housing 11 and mainly converts electrical signals into mechanical vibrations when powered on, thereby generating sound output. For example, the sound output by the speaker 12 may include conversation sounds, noise-canceling sounds, or other sound signals. The microphone is disposed inside the first housing 11 or on the side wall of the first housing 11 and is mainly used to collect or pick up sound signals, such as ambient sounds, user voices, and sounds output by the sound-emitting part 10.

[0064] Regarding the mechanical vibration of the speaker 12, this mechanical vibration can act directly on the user's auditory nerve based on the principle of bone conduction, primarily through the user's bones and tissues as a medium; or it can act on the user's eardrum, and thus on the auditory nerve, based on the principle of air conduction, primarily through air as a medium. For the sound heard by the user, the former can be simply referred to as "bone conduction sound," and the latter as "air conduction sound." Therefore, the speaker 12 can generate both bone conduction sound and air conduction sound, or both simultaneously.

[0065] Please see Figures 4 to 7The battery compartment 20 includes a second housing 21, a circuit board assembly 22, a battery assembly 23, an antenna structure 24, and a wear detection structure 25; the connecting part 30 includes a third housing 31 and an interaction button 32 disposed on the third housing 31. The circuit board assembly 22 is disposed inside the second housing 21 and is directly or indirectly electrically connected to the speaker 12, battery assembly 23, microphone, interaction button 32, antenna structure 24, and wear detection structure 25. This circuit board assembly 22 can be understood as a collection of the headphone's main control board or motherboard and related components, primarily controlling and managing all or some of the headphone's functional components to support the realization of all or some of the headphone's functions, such as power on / off and working mode switching.

[0066] The battery assembly 23 is located inside the second housing 21 and is mainly used to power the electrical components in the earphone. The antenna structure 24 is located in the second housing 21, for example, on the side wall of the second housing 21, and can provide support for the earphone to interact with external devices (such as mobile phones, computers, etc.). The wear detection structure 25 is located in the second housing 21, for example, on the side wall of the second housing 21, and can be used to detect whether the earphone is being worn, so as to provide support for preventing the earphone from being accidentally started and reducing the power consumption of the earphone. The interaction button 32 is located in the third housing 31, for example, at least part of the interaction button 32 protrudes from the side wall of the third housing 31, and can be used to support the input of preset command information, such as input of power on / off information, volume adjustment information, working mode switching information, etc. based on user operation.

[0067] In some embodiments, the sound-emitting part 10, the battery compartment 20, and the connecting part 30 can be relatively independent functional assemblies. For example, the first housing 11, the second housing 21, and the third housing 31 are relatively independent housing structures, which can be distinguished by the parting lines at their connection points. The relevant functional components are disposed in the corresponding housings to form the corresponding sound-emitting part 10, battery compartment 20, and connecting part 30. Then, by connecting the connecting part 30 between the sound-emitting part 10 and the battery compartment 20, an earphone is assembled. The connecting part 30 can also be a part of the battery compartment 20. For example, the portion of the battery compartment 20 used to connect the sound-emitting part 10 and occupying a certain structural space can be considered as the connecting part 30.

[0068] In other embodiments, the circuit board assembly 22, antenna structure 24, wear detection structure 25, interaction button 32, microphone, and other functional components (such as charging interface, programming interface, etc.) required by the headphone's functional configuration can be positioned at different locations on the ear hook according to the headphone's structural design. For example, the circuit board assembly 22, interaction button 32, microphone, and interface structure can be located on the third housing 31 to form the ear hook's connecting portion 30, while the battery assembly 23, antenna structure 24, wear detection structure 25, etc., can be located on the second housing 21 to form the ear hook's battery compartment 20. Of course, depending on the headphone's functional configuration requirements, the interaction button 32, wear detection structure 25, etc., can be selectively omitted; these details will not be elaborated upon here.

[0069] In some embodiments, to improve the stability of the headphones while they are being worn, the headphones may employ any one or a combination of the following methods.

[0070] Firstly, at least a portion of the ear hook is configured as a contoured structure (e.g., an arc-shaped hook) that conforms to at least one of the back of the ear and the head to increase the contact area between the ear hook and the ear or head, thereby increasing the resistance to the headphones falling off the ear.

[0071] Secondly, at least a portion of the ear hook is configured as an elastic structure (for example, an elastic metal wire made of materials such as spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, aluminum alloy, and copper alloy can be inserted inside the connecting part 30), so that the ear hook has a certain elastic deformation when worn, thereby increasing the pressure of the ear hook on the ear or head, and thus increasing the resistance to the earphone falling off the ear.

[0072] Third, at least part of the ear hook is configured to rest against the head when worn, so that the ear hook forms a reaction force that presses against the ear, so that the sound-producing part 10 is pressed against the front of the ear, thereby increasing the resistance to the headphones falling off the ear.

[0073] Fourth, the sound-generating part 10 and the ear hook (specifically the battery compartment 20) are configured to clamp the physiological parts such as the area where the helix 107 and the area where the concha 102 are located from the front and back sides of the ear when worn, thereby increasing the resistance to the earphone falling off the ear.

[0074] Fifth, the sound-emitting part 10 is configured to extend at least partially into physiological parts such as the concha cavity 102, cymba conchae 103, triangular fossa 104, and scaphoid fossa 106 when worn, thereby increasing the resistance to the headphones falling off the ear.

[0075] In summary, by placing the sound-generating component in the sound-generating section 10 and placing the circuit board assembly 22, battery assembly 23, antenna structure 24, wear detection structure 25, and interaction button 32 in the ear hook, the sound-generating component (specifically, the speaker 12) can obtain ample and stable structural assembly space or have a larger design size in the sound-generating section 10. This provides support for significantly increasing the effective sound output area, ensuring sound output intensity, and improving the listening effect. Furthermore, in the headphone's structural system, by placing the speaker 12 and components such as the circuit board assembly 22 in different housings, structural isolation can be formed, avoiding any adverse effects on the output of the speaker 12.

[0076] Meanwhile, distributing the core functional components such as the speaker 12, microphone, circuit board assembly 22, and battery assembly 23 in the sound-generating part 10 and ear hook facilitates the modular design of the headphones, creating conditions to reduce the difficulty of assembly, manufacturing, and disassembly / maintenance costs. Furthermore, the different positions of the speaker 12 and battery assembly 23 on the headphones help to adjust the center of gravity of the headphones, making the weight distribution of the headphones more balanced when worn, thereby improving the stability and comfort of wearing the headphones.

[0077] For a clearer and more detailed description of the battery compartment 20 and its related structures, please refer to [link / reference needed]. Figure 6 In this paper, an inner wall 21-1 and an outer wall 21-2 are defined for the second housing 21. The inner wall 21-1 refers to the side wall of the second housing 21 that can contact or face the user's skin when worn. For example, when worn, the second housing 21 can be suspended in the groove between the user's ear and head. When viewed along the user's coronal axis, the inner wall 21-1 may include a first contact wall facing or contacting the scalp skin, a second contact wall facing or contacting the ear skin, and a third contact wall connected between the first and second contact walls and facing or contacting the groove skin. The outer wall 21-2 refers to the side wall of the second housing 21 that is away from or away from the user's skin when worn. For example, the side wall of the second housing 21 that faces the space behind and / or above the ear and head when worn and is not obstructed by the ear and head can be considered the outer wall 21-2; another example is the side wall of the second housing 21 that is connected between the first contact wall and the second contact wall of the inner side wall 21-1 and is opposite to the third contact wall, which can be considered the outer wall 21-2. It should be noted that... Figure 6 The side wall indicated by the bold solid line with an arrow in the middle represents the inner side wall 21-1 of the second housing 21.

[0078] Please also see Figure 6This document also defines the length direction, width direction, and circumferential direction for the battery compartment 20. The length direction is defined as the direction in which the battery compartment 20 approaches or moves away from the connecting part 30, and the circumferential direction is defined as the direction around the length direction. The width direction is defined as the direction perpendicular to the length direction. For example, in the wearing state, the width direction is the same as or approximately the same as the direction of the user's coronal axis. Furthermore, regarding the inner sidewall 21-1 of the second housing 21, the parts of the inner sidewall 21-1 that are opposite to each other in the width direction can be understood as the first contact wall and the second contact wall.

[0079] It should be noted that in some embodiments, the inner sidewall 21-1 and the outer sidewall 21-2 can be distinguished by the parting line at the connection between the sidewalls of the second housing 21. In other embodiments, the inner sidewall 21-1 (e.g., the first contact wall, the second contact wall, and the third contact wall) itself, or between the inner sidewall 21-1 and the outer sidewall 21-2, may not have a clear structural boundary. For example, the inner sidewall 21-1 and the outer sidewall 21-2 may be joined together along the circumferential direction to form an arc-shaped wall or a curved wall.

[0080] In some embodiments, please refer to Figure 7 Antenna structure 24 is disposed on outer wall 21-2. Antenna structure 24 may include antenna pattern (i.e. conductive pattern) of electrical connection circuit board assembly 22. Antenna pattern can be formed on outer wall 21-2 by means of laser-direct-structuring (LDS) technology. Antenna structure 24 may also include conductive sheet of electrical connection circuit board assembly 22. Conductive sheet is attached and fixed to outer wall 21-2. Antenna structure may also include antenna substrate attached and fixed to outer wall 21-2. Antenna pattern or conductive sheet of electrical connection circuit board assembly 22 is formed on antenna substrate.

[0081] On the one hand, by setting the antenna structure 24 on the outer wall 21-2 of the second housing 21, the antenna structure 24 can be positioned away from the user's skin or in a position that is not easily blocked by the ears and head when worn. This not only reduces the absorption of antenna signals by the human body and enhances the strength and sensitivity of the headphone antenna signal, but also helps to improve the stability and efficiency of signal transmission and expand the signal coverage, thereby providing support for improving the communication and interaction capabilities between the headphones and external devices.

[0082] On the other hand, by setting the antenna structure 24 on the outer sidewall 21-2, it is equivalent to reusing a part of the sidewall of the second housing 21 as an antenna. This allows the antenna structure 24 to be less restricted by the structure and size of the internal space of the second housing 21. This not only facilitates the flexible design of the antenna structure 24 to support the improvement of its performance, but also provides more ample and reasonable structural assembly space for functional components such as the circuit board assembly 22 and the battery assembly 23 in the second housing 21. This makes the structure of the battery compartment 20 more compact and avoids affecting the wearing comfort due to the excessive size of the battery compartment 20.

[0083] In some embodiments, please refer to Figure 8 and Figure 9 The antenna structure 24 (specifically, a conductive pattern, a conductive sheet, etc.) has a radiating part 24-1 and a feeding part 24-2; one end of the feeding part 24-2 is connected to the outline edge of the radiating part 24-1, and the other end of the feeding part 24-2 is electrically connected to the circuit board assembly 22; the feeding part 24-2 and the radiating part 24-1 can be integrally formed; at the same time, a hollowed-out gap 24-3 is provided in the middle position of the radiating part 24-1.

[0084] On the one hand, by opening a perforated slit 24-3 on the radiating part 24-1, the low-frequency signal current mainly propagates along the edge of the radiating part 24-1, while the high-frequency signal current mainly propagates along the edge of the perforated slit 24-3, thereby changing the number of resonant points of the antenna to generate resonance and generating dual-mode resonance, thereby achieving the effect of improving antenna gain and expanding antenna operating bandwidth.

[0085] Specifically, please refer to Figure 9 , Figure 9 The return loss curve of antenna structure 24 with the cutout slot 24-3 is shown. Figure 9 As can be seen, two resonant points are generated consecutively within the frequency range of f2 to f3, and the S11 corresponding to both resonant points is less than -15dB. This indicates that the presence of the perforated slot 24-3 effectively expands the operating bandwidth of the antenna structure 24 and achieves better impedance matching. Therefore, through the cooperation of the radiating part 24-1 and the perforated slot 24-3, the two resonant points can be merged into a continuous low-reflection region (exemplarily, within the 2.4GHz-2.5GHz frequency band), thereby expanding the operating bandwidth of the antenna structure 24 and enhancing the transmission and reception efficiency of the antenna signal.

[0086] On the other hand, based on the hollowed-out gap 24-3, a signal radiation mode perpendicular to the radiating part 24-1 is added to the antenna structure 24; when worn, the antenna signal can radiate towards the space between the head and the ear, as well as the space behind or above the ear. This can effectively reduce the absorption of the antenna signal by the human body, thereby ensuring the radiation efficiency and intensity of the antenna signal and providing support for improving the communication interaction performance of the headphones.

[0087] It should be noted that, Figure 8 The dotted line in the text only represents the approximate boundary between the radiating part 24-1 and the feeding part 24-2; the middle position of the radiating part 24-1 can be understood as a position within the outline of the radiating part 24-1 and at a certain distance from the edge of the radiating part 24-1. More specifically, the projection of the hollowed-out gap 24-3 on the outer wall 21-2 falls within the projection of the radiating part 24-1 on the outer wall 21-2.

[0088] In other embodiments, the radiating part 24-1 and the power supply part 24-2 may also be separate structures; or the power supply part 24-2 may be omitted, and the radiating part 24-1 may be directly electrically connected to the circuit board assembly 22, for example, the electrical connection between the two may be located at the edge of the radiating part 24-1. Further details are omitted here.

[0089] In some embodiments, please refer to Figure 3 , Figure 6 and Figure 7 The length of the battery compartment 20 (i.e., the second housing 21) in the longitudinal direction can be set to be greater than the width of the battery compartment 20 in the width direction. For example, the second housing 21 can be a curved columnar contoured housing adapted to the physiological structure between the ear and the head. Correspondingly, the length of the radiating part 24-1 in the longitudinal direction is set to be greater than the width of the radiating part 24-1 in the circumferential direction, that is, the radiating part 24-1 is extended along the longitudinal direction and disposed on the outer side wall 21-2, while the perforated slit 24-3 extends along the long side of the radiating part 24-1 and is opened at the middle position of the radiating part 24-1. For example, please refer to Figure 8 The distance D1 from the edge of the radiating part 24-1 in the length direction (i.e. the short edge of the radiating part 24-1) to the hollowed-out gap 24-3 can be set to be greater than 0.1mm.

[0090] Thus, by adapting the size and arrangement of the radiating part 24-1 to the structural form of the second housing 21 (or the outer wall 21-2), a larger area can be provided for the radiating part 24-1, thereby increasing the radiation area of ​​the antenna structure 24 and making full use of the housing sidewall. Simultaneously, by setting the dimensional relationship between the perforated slot 24-3 and the radiating part 24-1, the radiation gain and radiation impedance in the low-frequency and high-frequency bands within the antenna's operating bandwidth can be coordinated, thereby improving the antenna gain and ensuring high efficiency within the preset frequency range (e.g., 2.4GHz-2.5GHz).

[0091] In some embodiments, please refer to Figure 8 One end of the power supply section 24-2 is connected to the long side edge of the radiating section 24-1 (for example, at the end or middle of the long side edge in the length direction), and the other end of the power supply section 24-2 is located on one side of the radiating section 24-1 in the circumferential direction.

[0092] Thus, the radiating part 24-1 and the feeding part 24-2 can be arranged side by side in the circumferential direction, which effectively reduces the length dimension occupied by the feeding part 24-2 on the outer wall 21-2, allowing the radiating part 24-1 to adapt to the structural form of the second housing 21 and have a larger design size, giving the antenna structure 24 a larger radiation area.

[0093] In some embodiments, please refer to Figure 7 The battery assembly 23 and the circuit board assembly 22 are arranged along the length direction inside the second housing 21, and the circuit board assembly 22 is located closer to the connection part 30 than the battery assembly 23; accordingly, the feed part 24-2 is located in the antenna structure 24 in the length direction near the connection part 30 or the circuit board assembly 22, for example, the end of the radiating part 24-1 in the length direction near the connection part 30 or the circuit board assembly 22 is arranged side by side with the feed part 24-2 in the circumferential direction.

[0094] On the one hand, by placing the power supply unit 24-2 close to the circuit board assembly 22, the electrical connection distance between the circuit board assembly 22 and the power supply unit 24-2 can be effectively shortened, creating conditions for simplifying the electrical connection structure between the circuit board assembly 22 and the antenna structure 24 and improving the convenience of the electrical connection between the two.

[0095] For example, please refer to Figure 12The circuit board assembly 22 is provided with a feed point structure, which may include an elastic element 22-1. The elastic element 22-1 has a fixed end and a free end that can move relative to the fixed end. The fixed end of the elastic element 22-1 is fixed to the circuit board assembly 22. When assembling the battery compartment 20, the antenna structure 24 (specifically, the feed part 24-2) is connected by elastic electrical contact using the free end of the elastic element 22-1. This allows for a convenient and quick establishment of an electrical connection between the circuit board assembly 22 and the antenna structure 24. This eliminates the need for wires or cables between the circuit board assembly 22 and the antenna structure 24, effectively reducing the difficulty of disassembling and assembling the battery compartment 20 or the entire earphone, and also reducing the space occupied inside the second housing 21. This provides support for a more rational structural design and layout of the battery assembly 23, circuit board assembly 22, and antenna structure 24. Of course, other suitable structural forms can also be used for the feed point structure, which will not be elaborated here.

[0096] On the other hand, by arranging the circuit board assembly 22 and the battery assembly 23 along the length direction, the circuit board assembly 22 and the radiating part 24-1 can be kept away from each other as much as possible, reducing the interference of the circuit board assembly 22 to the radiating part 24-1, which is beneficial to improving the radiation area and anti-interference ability of the antenna structure 24.

[0097] For example, please refer to Figure 12 The circuit board assembly 22 can adopt a stacked structure. Specifically, the circuit board assembly 22 includes multiple rigid circuit boards 22-2 (e.g., rigid printed circuit boards, or PCBs) stacked together, with adjacent rigid circuit boards 22-1 connected by flexible circuit boards 22-3 (e.g., flexible printed circuit boards, or FPCs). The stacked structure of the circuit board assembly 22 can reduce the space occupied by the circuit board assembly 22 within the second housing 21, thereby allowing for a larger design size and capacity for the battery assembly 23, or helping to reduce the volume of the battery compartment 20 to avoid excessive size affecting wearing comfort. Simultaneously, based on the layout of the internal structure of the battery compartment 20 or the design requirements to improve the performance of the antenna structure 24, the circuit board assembly 22 can be designed to avoid the radiating part 24-1 as much as possible, thereby reducing electromagnetic interference of the circuit board assembly 22 to the antenna signal and ensuring the quality and stability of the antenna signal.

[0098] In some embodiments, please refer to Figure 7The second housing 21 adopts a split assembly structure. Specifically, the second housing 21 includes a housing part 21-3 and a cover part 21-4. The housing part 21-3 has a cavity for accommodating the battery assembly 23 and the circuit board assembly 22 and an opening communicating with the cavity (for ease of distinction and description, this opening is defined as the first opening). The cover part 21-4 covers the first opening and is connected to the housing part 21-2 (e.g., by gluing, welding, interference fit connection, snap-fit, etc.). The antenna structure 24 (specifically, the radiating part 24-1 and the feeding part 24-2) is disposed on the cover part 21-4, while the feed point structure is disposed on the side of the circuit board assembly 22 facing the cover part 21-4 (e.g., the elastic element 22-1 is disposed on the rigid circuit board 22-3). It can also be understood that the cover part 21-4 constitutes at least a part of the outer wall 21-2 of the second housing 21, while the housing part 21-3 constitutes at least a part of the inner wall 21-1 of the second housing 21.

[0099] Thus, by setting the second housing 21 as a split assembly structure, the difficulty of disassembling and assembling the battery compartment 20 can be effectively reduced. For example, after the battery assembly 23 and the circuit board assembly 22 are assembled into the accommodating cavity through the first opening, based on the characteristics that the antenna structure 24 is set on the cover plate 21-4 and the circuit board assembly 22 is set with a feed point structure, when the cover plate 21-4 covers the first opening and connects to the housing 21-3, the antenna structure 24 and the circuit board assembly 22 can be conveniently and quickly connected together using the feed structure, thereby completing the assembly of the battery compartment 20.

[0100] Please see Figures 10A to 10E as well as Figure 11 ;in, Figure 10A This is a schematic diagram showing the structure where the antenna structure 24 and the circuit board assembly 22 are not positioned to avoid each other. Figure 10B This is a schematic diagram showing the arrangement of the antenna structure 24 and the circuit board assembly 22 to avoid each other. Figure 10C This is a schematic diagram of the antenna structure 24 extending onto one side of the circuit board assembly 22. Figure 10D This is a schematic diagram showing the structure of antenna structure 24 connected to the metal ground. Figure 10E This is a schematic diagram showing the antenna structure not connected to the metal ground; Figure 11 In the middle, curve L101 is Figure 10A The antenna radiation efficiency curve in the figure, curve L102 is Figure 10B The antenna radiation efficiency curve in Figure 103 is shown. Figure 10C The antenna radiation efficiency curve in the figure, curve L104 is Figure 10D The antenna radiation efficiency curve in the figure, curve 105 is Figure 10E The antenna radiation efficiency curve is shown in the figure. It should be noted that... Figures 10A to 10EThe diagram only illustrates the relative positions of components such as the circuit board assembly 22 and the antenna structure 24 inside the first housing 21, and does not represent the actual internal structure of the battery compartment 20.

[0101] from Figure 11 As can be seen, the antenna radiation efficiency corresponding to curves L102, L103, L104 and L105 is significantly better than that corresponding to curve 101, for example, in the 2.4 GHz to 2.5 GHz frequency band.

[0102] In some embodiments, please refer to Figure 10B and combined Figure 11 Since the antenna efficiency corresponding to curve L104 is better than the antenna radiation efficiency corresponding to other curves, a clearance area 20a can be formed inside the second housing 21 and on one side of the circuit board assembly 22. For example, the clearance area 20a is located between the circuit board assembly 22 and the battery assembly 23 in the length direction. At this time, at least a part of the antenna structure 24 (specifically the radiating part 24-1) can be located on the outer wall 21-2 at the position corresponding to the clearance area 20a.

[0103] The clearance zone 20a here can be understood as the interval between the antenna structure 24 and the circuit board assembly 22. The design maintains a large clearance zone 20a to avoid interference with the antenna signal due to the reflection or absorption of electromagnetic waves by the circuit board assembly 22, etc., and to ensure the radiation efficiency and anti-interference of the antenna structure 24.

[0104] In some embodiments, please refer to Figure 10C and combined Figure 11 At least a portion of the antenna structure 24 may be bent and extended from the outer wall 21-2 into the clearance area 20a. For example, the outer wall 21-2 may be provided with a protruding structure extending into the clearance area 20a, and a portion of the antenna structure 24 (e.g., the radiating part 24-1) may be disposed on the protruding structure. Alternatively, the antenna structure 24 may adopt a split structure (not shown), with one part of the antenna structure 24 disposed on the outer wall 21-2 and the other part of the antenna structure 24 located within the clearance area 20a.

[0105] Thus, although extending at least a portion of the antenna structure 24 into the clearance area 20a reduces the antenna radiation efficiency to some extent compared to a scheme where the antenna structure 24 does not extend into the clearance area 20a, it can adapt to the structural layout inside the second housing 21 and still achieve the effect of reducing the interference of the circuit board assembly 22 on the antenna structure 24, ensuring the radiation intensity and radiation efficiency of the antenna signal.

[0106] In some embodiments, please refer to Figure 7 , Figure 10D and Figure 10EThe battery compartment 20 also includes a metal reflector 23-1, which is disposed within the clearance area 20a facing the antenna structure 24; from Figure 11 As can be seen, although the antenna's radiation efficiency is somewhat reduced compared to the scheme where no metal reflector 23-1 is installed in the shelter zone 20a, the presence of the perforated gap 24-3 allows the first part of the signal generated by the antenna structure 24 to radiate towards the external environment, while the second part of the signal radiates in the opposite direction to the external environment (i.e., the side where the shelter zone 20a is located). At this time, the metal reflector 23-1 can reflect the second part of the signal towards the external environment, thereby adjusting the direction of the antenna signal radiation and giving the antenna structure 24 the ability to radiate directionally. This effectively enhances the radiation intensity and efficiency of the antenna signal into the external environment.

[0107] In some embodiments, please refer to Figure 4 and Figure 7 The battery compartment 20 also includes an insulating protective component 26, which is disposed between the metal reflector 23-1 and the antenna structure 24. The insulating protective component 26 can prevent the antenna structure 24 from short-circuiting due to contact between the metal reflector 23-1 and the antenna structure 24.

[0108] In some embodiments, please refer to Figure 4 , Figure 7 , Figure 10D and Figure 10E At least a portion of the battery assembly 23 is located within the air-relief zone 20a. The battery assembly 23 includes a battery body and a metal housing that houses the battery body, and the metal housing includes a metal reflector 23-1.

[0109] In this way, the housing of the battery assembly 23 is reused as part of the antenna. On the one hand, although the battery assembly 25 occupies the clearance area 20a, the antenna signal can be reflected by the metal reflector 23-1 (i.e. the metal housing of the battery assembly 23), which can enhance the radiation intensity of the antenna signal and thus improve the radiation efficiency of the antenna structure 24. Furthermore, based on the electrical connection between the battery assembly 23 and the circuit board assembly 22, it can serve as an extension of the antenna structure 24, thereby effectively improving the performance of the antenna. On the other hand, it can make full use of the internal space of the second housing 21, making the internal structural layout of the battery compartment 20 more reasonable.

[0110] It should be noted that, in some embodiments, in order to avoid structural interference between the battery assembly 23 and the circuit board assembly 22 within the accommodating cavity of the housing portion 21-3, the battery assembly 23 and the circuit board assembly 22 can be separated by a clearance area 20a; furthermore, in some embodiments, the internal space (e.g., the accommodating cavity) of the second housing 21 can be divided by a partition to form a clearance area 20a and different sub-accommodating cavities that can respectively accommodate the circuit board assembly 22 and the battery assembly 23, and the partition can be provided with openings that allow electrical connection components for connecting the battery assembly 23 and the circuit board assembly 22 to pass through.

[0111] In some embodiments where at least a portion of the battery assembly 23 is located in the clearance area 20a, the circuit board assembly 22 may also use a flexible circuit board as the main structure, with the flexible circuit board and battery assembly 23 stacked together. For example, the flexible circuit board and battery assembly may be stacked together in the length direction, or the flexible circuit board and battery assembly 23 may be stacked together in the radial direction of the battery assembly. This can prevent the battery compartment 20 from being too large and affecting the comfort of wearing the headphones.

[0112] Please see Figure 7 As in some of the embodiments described above, the second housing 21 can be assembled from the housing part 21-3 and the cover plate part 21-4, etc., and the antenna structure 21-4 is disposed on the cover plate part 21-4. At this time, the cover plate part 21-4 can be an integral structure made of insulating materials such as plastic, and the housing part 21-3 can be an integral structure made of insulating materials such as silicone or rubber. Furthermore, the Shore hardness of the cover plate part 21-4 is greater than that of the housing part 21-3.

[0113] Thus, based on the difference in material hardness between the cover plate portion 21-4 and the housing portion 21-3, the second housing 21 can be constructed into a structure combining softness and rigidity. Utilizing the flexible material properties of the housing portion 21-3 and its ability to form a large contact area with human skin, the comfort of wearing the headphones can be effectively improved. On the other hand, utilizing the relatively hard material of the cover plate portion 21-4, stable structural support can be provided for the housing portion 21-3 from localized areas. This helps maintain the stability of the outer contour of the second housing 21, providing ample and stable structural assembly space for the battery assembly 23, circuit board assembly 22, etc., and preventing compression of the circuit board assembly 22 and other components due to significant deformation of the housing portion 21-3.

[0114] Meanwhile, the cover plate 21-4 provides stable structural support for the antenna structure 24, ensuring that the antenna structure 24 maintains a stable structural shape, thereby ensuring the stability of the signal radiation path and the stability of the transmitted and received signals. In addition, the second housing 21 adopts a combination of rigid and flexible structure, which makes it easier to assemble and disassemble the housing 21-3 and the cover plate 21-4, thereby reducing the difficulty of assembling and disassembling the battery compartment 20.

[0115] Please see Figure 6 and Figure 7 As in some of the embodiments described above, the overall outline of the battery compartment 20 or the second housing 21 is generally a curved columnar structure; when the Shore hardness of the cover plate 21-4 is greater than that of the housing 21-3, the area ratio of the first opening on the side wall of the housing 21-3 in the circumferential direction can be between 1 / 3 and 1 / 2, and the outline shape and size of the cover plate 21-4 are adapted to the first opening.

[0116] In this way, by setting the size and shape of the second opening and cover portion 21-4, it can be ensured that the part of the second housing 21 that comes into contact with human skin is made of a relatively soft material, thereby improving the comfort of wearing the headphones; at the same time, it can also avoid affecting the overall structural stability of the second housing 21 due to the excessive size of the housing portion 21-3, and avoid limiting the size, shape, and placement of the antenna structure 24 due to the excessive size of the housing portion 21-3.

[0117] In some embodiments, please refer to Figure 5 and combined Figure 2 and Figure 6 Considering that, when worn, the inner wall 21-1 of the second housing 21 typically has a larger contact area with human skin compared to the outer wall 21-2 of the second housing 21, the wear detection structure 25 can be set on the inner wall 21-1 to effectively improve the accuracy of wear detection.

[0118] For example, the wear detection structure 25 may include a capacitive sensor and a metal electrode. The metal electrode may be formed on the inner surface of the inner wall 21-1 using laser-direct-structuring (LDS) technology, or it may be attached and fixed to the inner surface of the inner wall 21-1. In the wearing state, since the metal electrode is located on the side of the second housing 21 that is closer to the human skin, it can form two electrodes of a capacitor structure with the human skin, thereby forming a capacitive effect. The circuit board assembly 22 can detect the wearing state of the headphones based on the amount or trend of change in the capacitance value of the capacitor structure.

[0119] For example, the wear detection structure 25 may also include a conductive material layer (e.g., conductive silicone). For instance, part or all of the inner sidewall 21-2 may include a contact material layer (e.g., silicone layer) that contacts human skin and a conductive material layer disposed inside the contact material layer and electrically connected to the circuit board assembly 22. This allows the sidewall of the second housing 21 to be reused to form the wear detection structure 25, reducing the space occupied inside the second housing 21. In the wearing state, the conductive material layer forms a capacitive structure with human skin, which can effectively increase the capacitive sensing area and shorten the insulation distance, thereby improving the accuracy and sensitivity of wear detection.

[0120] In other embodiments, the wear detection structure 25 can also be disposed in other parts of the earphone, for example, on the side wall of the first housing 11 (or the third housing 31) that can contact the human skin when worn. Of course, the wear detection structure 25 can also adopt other suitable structures, which will not be elaborated here.

[0121] In some embodiments, please refer to Figure 13 The third housing 31 includes an inner adapter housing 31-1 and an outer adapter housing 31-2. The inner adapter housing 31-1 is connected to the first housing 11 (e.g., by snap-fit, bonding, welding, etc.). The outer adapter housing 31-2 is fitted over the outer side of the inner adapter housing 31-1 in a sleeve-like manner (e.g., by interference fit, bonding, or die-cutting). The outer adapter housing 31-2 is connected to the second housing 21 (e.g., housing part 21-3) (e.g., by bonding, welding, etc.). The Shore hardness of the outer adapter housing 31-2 is less than that of the inner adapter housing 31-1. For example, the outer adapter housing 31-2 can be made of silicone or rubber, and the inner adapter housing 31-1 can be made of a relatively hard plastic material or other insulating material.

[0122] Utilizing the relatively rigid material of the inner adapter shell 31-1, the contour of the connecting part 30 can be stabilized, providing structural support for the assembly of interactive buttons 32, microphones, etc., into the third shell 31. For example, the interactive button 32 is fixed inside the adapter shell 31-1, and its trigger end can form a button protrusion protruding from the side wall of the third shell 31 by pressing outward against the adapter outer shell 31-2. When worn, the user can accurately and naturally press the interactive button 32. Furthermore, an adapter circuit board 33 can be installed inside the inner adapter shell 31-1. The sound-generating component, interactive button 32, etc., can be electrically connected to the circuit board assembly 22 through the adapter circuit board 33. By using the adapter circuit board 33, some functions of the circuit board assembly 22 can be shared, reducing the complexity of the electrical connection structure between the circuit board assembly 22 and related functional components, and the internal space of the connecting part 30 can be fully utilized.

[0123] Meanwhile, the relatively soft material of the adapter jacket 31-2 allows it to come into contact with the skin while worn, thus improving the comfort of wearing the headphones. The combination of soft and hard materials also facilitates the disassembly and maintenance of the connector 30 and its related components, and enhances the stability of the structural connection between the connector 30, the sound-generating part 10, and the battery compartment 20.

[0124] In some embodiments, please refer to Figure 3 , Figure 6 and Figure 13 The adapter jacket 31-2 and the second housing 21 are an integral structure. For example, the adapter jacket 31-2 and the housing part 21-3 are an integral structure made of silicone material (e.g., a tubular structure). The adapter inner shell 31-1 is a shell structure made of a hard material such as plastic, and the adapter inner shell 31-1 is inserted into the interior of the adapter jacket 31-2 at the end away from the housing part 21-3 by means of interference fit, bonding or other means.

[0125] This allows for the integrity of the outline structure of the battery compartment 20 and the connecting part 30 based on the integrated structure of the adapter jacket 31-2 and the housing 21-3. The connecting part 30 can be quickly formed by inserting the adapter inner shell 31-1 into the adapter jacket 31-2, which also provides support for improving the structural stability of the connecting part 30 and for quick assembly and disassembly of related components. By connecting the adapter inner shell 31-1 to the first housing 11, the sound-emitting part 20 and the ear hook can be easily and conveniently combined into one unit to form a complete headphone.

[0126] As mentioned earlier, the sound-generating components (such as speaker 12) are located in the sound-generating section 10, while the other core functional components of the headphones are housed in ear hooks. This not only makes the structural layout of the headphones more reasonable but also provides support for improving headphone performance (such as sound output efficiency, user listening experience, and active noise cancellation). Therefore, the following mainly introduces the sound-generating section 10 and its related structures.

[0127] For easier distinction and description, please refer to Figure 14 and Figure 15 and combined Figure 2In this paper, the sound-emitting part 10 is defined by its orthogonal major axis, minor axis, and thickness direction. The major axis can be defined as the direction with the longest extension dimension in the shape of the two-dimensional projection surface of the sound-emitting part 10 (e.g., its projection in the sagittal plane of the human body). For example, when the projected shape of the sound-emitting part 10 is rectangular or approximately rectangular, the major axis can be understood as the length direction of the sound-emitting part 10. The minor axis can be defined as the direction perpendicular to the major axis in the shape of the two-dimensional projection surface of the sound-emitting part 10. For example, when the projected shape of the sound-emitting part 10 in the sagittal plane is rectangular or approximately rectangular, the minor axis can be understood as the height direction of the sound-emitting part 10. Correspondingly, the thickness direction can be defined as the direction perpendicular to both the major and minor axes. For example, when worn, the thickness direction is consistent with the direction of the human coronal axis, both pointing towards the left and right sides of the body. Viewed from the thickness direction or the human coronal axis direction, the outline shape of the sound-emitting part 10 can be a regular or irregular geometric shape such as a rectangle, ring, ellipse, polygon, U-shape, V-shape, or semicircle.

[0128] Please also see Figure 16 This document also defines several different housing sidewalls for the first housing 11, including a first sidewall 11-1, a second sidewall 11-2, a third sidewall 11-3, a fourth sidewall 11-4, and a fifth sidewall. Specifically, the first sidewall 11-1 is the housing sidewall facing the ear in the thickness direction when worn; the second sidewall 11-2 is the housing sidewall facing away from the ear in the thickness direction when worn; the third sidewall 11-3 is the housing sidewall close to the top of the head in the short axis direction when worn; the fourth sidewall 11-4 is the housing sidewall away from the top of the head in the short axis direction when worn; and the fifth sidewall is the housing sidewall facing the ear or away from the adapter 20 in the long axis direction when worn. It is understood that these multiple different housing sidewalls together form a housing space capable of accommodating the speaker 12 and related components.

[0129] In some embodiments, please refer to Figures 14 to 16The loudspeaker 12 is disposed inside the first housing 11 with its diaphragm facing either the first sidewall 11-1 or the second sidewall 11-2. Both the first sidewall 11-1 and the second sidewall 11-2 are provided with sound outlets that are acoustically connected to the loudspeaker 12. For ease of distinction and description, the sound outlet provided through the first sidewall 11-1 is defined as the first sound outlet 11-5, and the sound outlet provided through the second sidewall 11-2 is defined as the second sound outlet 11-6. Both the first sound outlet 11-5 and the second sound outlet 11-6 are acoustically connected to the loudspeaker 12, and both the first sound outlet 11-5 and the second sound outlet 11-6 adopt a micro-pore array structure. It is understandable that a micropore array structure is an array structure with tiny holes, which can be composed of micron-sized holes arranged in a predetermined manner; and these holes can be formed by drilling directly on the side wall of the sound-generating part 10, or they can refer to small holes in the acoustic steel mesh or acoustic yarn (that is, the first side wall 11-1 or the second side wall 11-2 can be made of acoustic steel mesh or acoustic yarn).

[0130] On the one hand, by utilizing the micro-pore array structure of the first sound hole 11-5 and the second sound hole 11-6, the effective area of ​​sound output can be greatly increased, enabling the headphones to provide higher intensity sound output, thereby providing support for improving the listening effect and enhancing the active noise cancellation effect.

[0131] For example, taking the first sound outlet 11-5 as an example, the sound generated by the speaker 12 may include noise-canceling sound that can cancel out ambient noise. The noise-canceling sound output through the first sound outlet 11-5 can have the same amplitude and opposite phase as the ambient noise near the external auditory canal 101, thus eliminating the ambient noise near the external auditory canal 101 and forming an active noise cancellation effect. Other sounds generated by the speaker 12 (such as reminder sounds, played audio, call sounds, etc.) can be guided to the external auditory canal 101 through the first sound outlet 11-5 to improve the listening effect.

[0132] On the other hand, based on the first sound outlet 11-5 and the second sound outlet 11-6 located on opposite sides of the speaker 12, while ensuring sound output efficiency, it can also balance the internal air pressure of the sound-generating part 10. This can avoid problems such as affecting the overall appearance of the headphones, accumulating dirt and impurities, and requiring a separate pressure relief hole due to the use of a single sound outlet with a larger aperture. It can also avoid problems such as high acoustic impedance, low sound output efficiency, and poor sound effect due to the use of a single sound outlet with a smaller aperture.

[0133] In other embodiments, the first sound outlet 11-5 and the second sound outlet 11-6 may also adopt a single-hole structure or a multi-hole structure with a larger aperture. Covering the first sound outlet 11-5 and the second sound outlet 11-6 with acoustic steel mesh or acoustic yarn mesh can also increase the effective area for sound output.

[0134] In some embodiments, please refer to Figures 16 to 18 The loudspeaker 12 can be a dual-diaphragm loudspeaker, which includes a magnetic circuit assembly 12-1, a first diaphragm 12-2, a second diaphragm 12-3, and a voice coil. The magnetic circuit assembly 12-1 is located between the first diaphragm 12-2 and the second diaphragm 12-3 in the vibration direction (i.e., the thickness direction). The first diaphragm 12-2 and the first sidewall 11-1 (specifically, the part occupied by the first sound outlet 11-5) are opposite to each other in the vibration direction, and the second diaphragm 12-3 and the second sidewall 11-2 (specifically, the part occupied by the second sound outlet 11-6) are opposite to each other in the vibration direction. The magnetic circuit assembly 12-1 and the voice coil drive the first diaphragm 12-2 and the second diaphragm 12-3 to vibrate respectively to produce sound.

[0135] Specifically, regarding the magnetic circuit assembly 12-1, the magnetic circuit assembly 12-1 may include two sets of magnets, which cooperate with the voice coil to drive the first diaphragm 12-2 and the second diaphragm 12-3 to vibrate and generate sound respectively; the magnetic circuit assembly 12-1 may also include one set of magnets, and the first diaphragm 12-2 and the second diaphragm 12-3 share this set of magnets.

[0136] In open-concept environments, the ambient noise heard by users is significantly greater than that when wearing in-ear headphones. Therefore, using dual-diaphragm speakers can improve the output performance of headphones, allowing them to output higher volumes of noise-canceling audio to reduce the noise of a larger ambient environment, thus ensuring the active noise cancellation effect of the headphones.

[0137] For example, by setting up a dual-diaphragm speaker, the magnetic field utilization rate of the magnetic circuit assembly 12-1 and the space utilization rate of the sound-emitting part 10 (specifically, the first housing 11) can be effectively improved. Moreover, the arrangement of the first diaphragm 12-2 and the second diaphragm 12-3 can significantly increase the effective contact area between the diaphragm and the air, thereby increasing the amount of air that the diaphragm can push during vibration. With the cooperation of the micro-hole array structure of the sound outlet, the headphones can provide a higher intensity sound output.

[0138] For example, the output performance of the headphones can be enhanced by superimposing the sounds output from the first diaphragm 12-2 and the second diaphragm 12-3, thereby improving the headphones' active noise cancellation effect against larger ambient noises. Alternatively, the resonant frequency of the headphones can be adjusted based on the first diaphragm 12-2 and the second diaphragm 12-3 to reduce distortion in the headphone output, enabling the headphones to have a flatter output across a wider frequency range, thus enhancing the active noise cancellation effect.

[0139] In some embodiments where the speaker 12 employs a dual-diaphragm speaker, the effective areas of the first sound outlet 11-5 and the second sound outlet 11-6 can be set to be the same, or the difference between the effective areas of the first sound outlet 11-5 and the second sound outlet 11-6 can be limited to a preset ratio range. This can be understood as the ratio of the absolute value of the difference between the effective areas of the first sound outlet 11-5 and the second sound outlet 11-6 to the smaller of the effective areas of the first sound outlet 11-5 and the second sound outlet 11-6 being limited to a preset ratio range; this is beneficial for improving the consistency of sound output from the inner and outer sides of the headphones. For example, in some embodiments, the ratio can be less than 30%. For example, in some embodiments, the ratio can be less than 20%. And for example, in some embodiments, the ratio can be less than 10%.

[0140] In some embodiments, the first diaphragm 12-2 and the second diaphragm 12-3 may be driven by different voice coils. For details, please refer to [link to relevant documentation]. Figure 17 The loudspeaker 12 includes a magnetic circuit assembly 12-1, a first diaphragm 12-2, a second diaphragm 12-3, a first voice coil 12-4, and a second voice coil 12-5; wherein, one end of the first voice coil 12-4 is located within the magnetic gap of the magnetic circuit assembly 12-1, and the other end of the first voice coil 12-4 is connected to the first diaphragm 12-2; one end of the second voice coil 12-5 is located within the magnetic gap of the magnetic circuit assembly 12-1, and the other end of the second voice coil 12-5 is connected to the second diaphragm 12-3.

[0141] Thus, the first voice coil 12-4 and the second voice coil 12-5 can drive the first diaphragm 12-2 and the second diaphragm 12-3 to vibrate synchronously or asynchronously. The vibration direction of the first diaphragm 12-2 and the vibration direction of the second diaphragm 12-3 can be the same or opposite, so as to facilitate the superposition of the outputs of the first diaphragm 12-2 and the second diaphragm 12-3, or to adjust the resonant frequency of the headphones, etc.

[0142] For example, the aforementioned dual-voice-coil dual-diaphragm loudspeaker may further include a first connector that connects the first voice coil 12-4 and the second voice coil 12-5, so that the first diaphragm 12-2 and the second diaphragm 12-3 can vibrate more synchronously, which helps to improve the consistency of vibration between the first diaphragm 12-2 and the second diaphragm 12-3, reduce the distortion of the headphone output, and improve the active noise cancellation effect and sound quality of the headphone.

[0143] In some embodiments, please refer to Figure 18The first diaphragm 12-2 and the second diaphragm 12-3 can also be driven by the same voice coil. For ease of distinction and description, this voice coil is defined as the third voice coil 12-6. At least a portion of the third voice coil 12-6 extends into the magnetic gap of the magnetic circuit assembly 12-1. One end of the third voice coil 12-6 is connected to the first diaphragm 12-2, and the other end is connected to the second diaphragm 12-3. Thus, the third voice coil 12-6 can drive the first diaphragm 12-2 and the third diaphragm 12-3 to vibrate synchronously and in the same direction, ensuring the consistency of the vibration of the first diaphragm 12-2 and the second diaphragm 12-3.

[0144] Considering that if the size of the third voice coil 12-6 is too large, it may reduce the driving force of the third voice coil 12-6; in some embodiments, in order to ensure the driving force of the third voice coil 12-6, the third voice coil 12-6 can be connected to the second diaphragm 12-3 through the second connector 12-7.

[0145] Of course, other suitable loudspeakers 12 may be selected as needed, such as single-diaphragm loudspeakers; that is, the specific type and structure of loudspeakers 12 include, but are not limited to, the loudspeakers 12 mentioned above.

[0146] In some embodiments, please refer to Figure 4 , Figure 5 , Figure 14 , Figure 15 , Figure 16 and combined Figure 2 The sound-generating component includes multiple microphones, including a first microphone 13, a second microphone 14, and a third microphone 15.

[0147] Please combine Figure 2 The first microphone 13 is disposed inside the first housing 11, and a first pickup hole for acoustic communication with the first microphone 13 is provided on the second side wall 11-2 or the fourth side wall 11-4; for example, please refer to Figure 2 and Figure 16 The first pickup hole is located on the second sidewall 11-2. The distance between the centroid of the first pickup hole and the fourth sidewall 11-4 in the short axis direction is between 1mm and 14mm, and the distance between the centroid of the first pickup hole and the fifth sidewall in the long axis direction is between 20 and 35mm. In this way, when worn, the first pickup hole can be located in the area directly above the external auditory canal 101, and is not blocked by the ear, the connecting part 30, and the sound-emitting part 10.

[0148] The first microphone 13 can be used to collect the user's voice, or it can be used as a feedforward microphone to collect external environmental noise. For example, when worn, since the first pickup hole is not blocked by the ear, the connecting part 30 and the sound-emitting part 10, the environmental noise collected by the first microphone 13 is closer to the ambient noise around the user. The circuit board assembly 22 can drive the speaker 12 to output noise-reduced sound that can cancel out the ambient noise based on the signal generated by the first microphone 13.

[0149] In some embodiments, the first microphone 13 may also be disposed on the connector 30. For example, please refer to [link to relevant documentation]. Figure 4 and Figure 14 The first microphone 13 is disposed inside the third housing 31. Correspondingly, the first pickup hole penetrates the housing sidewall of the third housing 31 that is connected to the second sidewall 11-2 or the fourth sidewall 11-4. In this way, when worn, the environmental noise collected by the first microphone 13 can be more closely similar to the ambient noise around the user, while avoiding the first microphone 13 occupying the structural space of the sound-emitting part 10, thus providing support for the use of a larger speaker 12 and ensuring the sound output effect of the speaker 12.

[0150] The second microphone 14 is disposed inside the first housing 11, and a second pickup hole 11-7 acoustically connected to the second microphone 14 is provided on the third side wall 11-3; for example, please refer to Figure 14 and Figure 16 The first pickup hole is located on the second side wall 11-2, and the line connecting the centroid of the second pickup hole 11-7 and the centroid of the first pickup hole can point towards the user's mouth. This second microphone 14 can be used to collect the user's voice or as a feedforward microphone to collect external environmental noise. For example, when worn, the ear, connecting part 30, and sound-emitting part 10 partially obstruct the second pickup hole 11-7 or the second microphone 14, resulting in less wind noise in the sound collected by the second microphone 14. This reduces the impact of airflow from behind the user's body along the sagittal axis on the second microphone 14, effectively reducing wind noise in the external environmental noise collected by the second microphone 14. Since wind noise interferes with the active noise cancellation of the headphones, using the environmental noise collected by the second microphone 14 helps improve the effectiveness of active noise cancellation in environments with wind noise.

[0151] In embodiments where the line connecting the centroid of the second pickup hole 11-7 and the centroid of the first pickup hole can point towards the user's mouth, the first microphone 13 and the second microphone 14 can be most sensitive to the sound from the direction of the user's mouth. This results in a significant difference between the signals collected by the first microphone 13 and the second microphone 14 from the direction of the wearer's mouth, which can then be used to identify the user's voice, facilitating subsequent active noise reduction and ensuring clear call quality.

[0152] It should be noted that, Figure 2 The solid dots in the diagram represent the approximate positions of the first microphone 13 and the second microphone 14 within the first housing 21. The dashed line between the two solid dots represents the centroid line connecting the first pickup hole and the second pickup hole 11-7. The solid line with an arrow indicates the direction of the centroid line. Figure 14 The bold dashed line represents the centroid line connecting the first pickup hole and the second pickup hole 11-7 when the second microphone 14 is installed in the first housing 21 and the first microphone 13 is installed in the third housing 31. The bold solid line with arrows indicates the direction of the centroid line.

[0153] Of course, the second microphone 14 can also be set in the connecting part 30. Correspondingly, the second pickup hole 11-7 can be set through the housing side wall of the third housing 31 that is connected to the third side wall 11-3. This can also reduce the wind noise in the external environmental noise collected by the second microphone 14 and avoid the second microphone 14 occupying the structural space of the sound-emitting part 10.

[0154] The third microphone 15 is disposed inside the first housing 11 or on the first sidewall 11-1. Accordingly, please refer to... Figure 15 The first sidewall 11-1 is provided with a third pickup hole 11-8 that is acoustically connected to the third microphone 15. For example, the centroid of the third pickup hole 11-8 is between 1mm and 10mm away from the fourth sidewall 11-4 in the short axis direction, and the centroid of the third pickup hole 11-8 is between 3mm and 13mm away from the fifth sidewall in the long axis direction, so that the third pickup hole 11-8 is located closer to the external auditory canal 101 when worn.

[0155] The third microphone 15 can be used to collect the user's voice, or as a feedback microphone to collect residual noise near the external auditory canal 101, or as a feedforward microphone to collect ambient noise near the external auditory canal 101. For example, when worn, since the third pickup hole 11-8 is closer to the external auditory canal 101 than the first and second pickup holes 11-7, the sound collected by the third microphone 15 can more accurately reflect the sound near the external auditory canal 101 or the sound heard by the user. Therefore, the residual noise at the external auditory canal 101 can be collected by the third microphone 15, and the circuit board assembly 22 can provide feedback and adjust the magnitude and phase of the noise-canceling sound output by the speaker 12 according to the signal generated by the third microphone 15. The residual noise can be understood as the noise remaining after the noise-canceling sound and the ambient noise are canceled out at the external auditory canal 101.

[0156] Therefore, based on the configuration of the first microphone 13, the second microphone 14, and the third microphone 15, the headphones can support the function of active noise cancellation or user voice acquisition, depending on the scenario. Alternatively, the headphones can support the function of active noise cancellation and user voice acquisition simultaneously. In other words, the functions of the first microphone 13, the second microphone 14, and the third microphone 15 in the headphones can be the same or different, and their functions can be switched as needed.

[0157] For example, the second microphone 14 and the third microphone 15 are used together for active noise cancellation, and the first microphone 13 and the second microphone 14 are used together to collect the user's voice; or the first microphone 13 and the third microphone 15 are used together for active noise cancellation, and the first microphone 13 and the third microphone 15 are used together to collect the user's voice; or the first microphone 13 and the second microphone 14 are used together for active noise cancellation, and the third microphone 15 is used to collect the user's voice.

[0158] In some embodiments, based on the different positions of the first pickup hole, the second pickup hole 11-7 and the third pickup hole 11-8 on the earphone, and the differences in the ambient noise collected by the first microphone 13, the second microphone 14 and the third microphone 15 (for example, the difference in ambient noise collected by the first microphone 13 and the second microphone 14 is mainly due to wind noise), at least one of the first microphone 13 and the second microphone 14 can be selected as the feedforward microphone to collect ambient noise, and the third microphone 15 can be selected as the feedback microphone.

[0159] When the wind noise in the collected ambient noise is relatively low, the first microphone 13 can be used as a feedforward microphone to ensure that the ambient noise during active noise cancellation processing is closer to the ambient noise heard by the wearer. When the wind noise in the collected ambient noise is relatively high, the second microphone 14 can be used as a feedforward microphone to reduce the adverse effects of wind noise during noise cancellation processing and improve the accuracy of active noise cancellation processing. The circuit board assembly 22 can drive the speaker 12 to output noise-canceling sound based on the signal generated by the feedforward microphone, while the third microphone 15 can collect residual noise at the external auditory canal 101, so that the circuit board assembly 22 can provide feedback and adjust the magnitude and phase of the noise-canceling sound output by the speaker 12 accordingly, thereby improving the active noise cancellation effect.

[0160] In some embodiments, the selection or determination of one or both of the first microphone 13 and the second microphone 14 as the feedforward microphone can be determined by the user through inputting a preset command via the interactive button 32, or it can be automatically determined by the circuit board assembly 22 based on the corresponding feedback information. Alternatively, one or both of the first microphone 13 and the second microphone 14 can be directly and defaulted to be the feedforward microphone. These variations will not be elaborated upon here.

[0161] In some embodiments, the first microphone 13 (together with the first pickup hole), the second microphone 14 (together with the second pickup hole 11-7), and the third microphone 15 (together with the third pickup hole 11-8) may be omitted, either one or both.

[0162] For example, by omitting the third microphone 15 (along with the third pickup hole 11-8), the ambient noise collected by at least one of the first microphone 13 and the second microphone 14 is actively processed for noise reduction, which is beneficial for the speaker 12 to quickly output noise-reduced sound, reduce noise reduction delay, and improve the real-time performance of active noise reduction.

[0163] For example, by omitting the first microphone 13 (along with the first pickup hole) and the second microphone 14 (along with the second pickup holes 11-7), the third microphone 15 can collect the ambient noise near the external auditory canal 101, which can more accurately reflect the sound at the user's external auditory canal 101. The circuit board assembly 22 can drive the speaker 12 to output noise-canceling sound based on the signal fed back by the third microphone 15, which helps to improve the accuracy of active noise cancellation.

[0164] In some embodiments, the first sound outlet 11-5 and the second sound outlet 11-6 can be considered as outputting sounds with the same amplitude but opposite phase. The absolute value of the difference between the distance from the first pickup hole to the first sound outlet 11-5 and the distance from the first pickup hole to the second sound outlet 11-6 ranges from 0 to 7 mm. By limiting the absolute value of the difference between the distance from the first pickup hole to the first sound outlet 11-5 and the distance from the first pickup hole to the second sound outlet 11-6, the sound from the first sound outlet 11-5 and the sound from the second sound outlet 11-6 at the location of the first pickup hole can be made to cancel each other out as much as possible.

[0165] For example, when the first pickup hole is located at the acoustic null point of the sound field jointly constructed by the first output hole 11-5 and the second output hole 11-6, it can minimize the possibility of the first microphone 13 picking up the sound output from the first output hole 11-5 and the sound output from the second output hole 11-6. In this way, the sound picked up by the first microphone 13 is mainly ambient noise. Using the signal generated by the first microphone 13 as the basis for the noise-reduced sound generated by the speaker 12 simplifies the signal processing process and also improves the effect of active noise cancellation.

[0166] In some embodiments, the minimum distance between the first pickup hole and the first output hole 11-5 can be greater than a first preset threshold, for example, the first preset threshold is between 12mm and 14mm; the minimum distance between the first pickup hole and the second output hole 11-6 can be greater than a second preset threshold, for example, the second preset threshold is between 5mm and 7mm. By limiting the distance between the first output hole 11-5 and the first pickup hole, the first pickup hole can be moved as far away from the first output hole 11-5 as possible, reducing the sound output from the first output hole 11-5 collected by the first microphone 13. Similarly, by limiting the distance between the second output hole 11-6 and the first pickup hole, the first pickup hole can be moved as far away from the second output hole 11-6 as possible, reducing the sound output from the second output hole 11-6 collected by the first microphone 13.

[0167] In some embodiments, the absolute value of the difference between the distance from the second pickup hole 11-7 to the first sound outlet 11-5 and the distance from the second pickup hole 11-7 to the second sound outlet 11-6 is between 0 and 5 mm. By limiting the absolute value of the difference between the distance from the second pickup hole 11-7 to the first sound outlet 11-5 and the distance from the second pickup hole 11-7 to the second sound outlet 11-6, the sound from the first sound outlet 11-5 at the location of the second pickup hole 11-7 can be canceled out as much as possible with the sound from the second sound outlet 11-6, thereby preventing the second microphone 14 from picking up the sound from the first sound outlet 11-5 and the second sound outlet 11-6.

[0168] In some embodiments, the minimum distance between the first sound outlet 11-5 and the second sound pickup 11-7 can be greater than a third preset threshold, for example, the third preset threshold is between 7mm and 9mm; the minimum distance between the second sound outlet 11-6 and the second sound pickup 11-7 is greater than a fourth preset threshold, for example, the fourth preset threshold is between 7mm and 9mm. By limiting the distance between the first sound outlet 11-5 and the second sound pickup 11-7, the second sound pickup 11-7 can be moved as far away from the first sound outlet 11-5 as possible, reducing the sound picked up by the second microphone 14 from the output of the first sound outlet 11-5. By limiting the distance between the second sound outlet 11-6 and the second sound pickup 11-7, the second sound pickup 11-7 can be moved as far away from the second sound outlet 11-6 as possible, reducing the sound picked up by the second microphone 14 from the output of the second sound outlet 11-6.

[0169] In some embodiments, please refer to Figure 15 The first sidewall 11-1 is provided with a protruding structure 11-9 extending outward from the first sidewall 11-1 along its thickness direction, and the third microphone hole 11-8 is disposed in the protruding structure 11-9; the third microphone 15 can be disposed in the first accommodating cavity or in the protruding structure 11-9. The protruding structure 11-9 can reduce the distance between the third microphone hole 11-8 and the external auditory canal 101, which not only makes the sound collected by the third microphone 15 closer to the sound actually heard by the user, but also helps to reduce wind noise in the sound collected by the third microphone 15.

[0170] Meanwhile, the protruding structure 11-9 extends along its thickness toward the side where the external auditory canal 101 is located. By selecting the contour shape and size of the protruding structure 11-9, the comfort of wearing the headphones can be improved. In addition, in some embodiments, the third microphone 15 is disposed within the protruding structure 11-9, which can shorten the distance between the third microphone 15 and the third pickup hole 11-8, ensuring the sound pickup effect of the third microphone 15, and also reducing the occupancy of the third microphone 15 on the sound-emitting part 10 (specifically, the first accommodating cavity).

[0171] Please see Figures 14 to 16 and combined Figure 2 and Figure 3 When worn, at least one end of the first housing 11 extends into the concha cavity 102 or is located in a physiological part such as the antihelix 105 along its long axis. In this case, a flexible wall 16 can be provided on the first housing 11. The Shore hardness of the flexible wall 16 is less than that of the first housing 11. For example, the flexible wall 16 can be made of a material with a certain degree of flexibility or elasticity, such as silicone or rubber, and the first housing 11 can be made of a material with a certain degree of mechanical strength, such as metal or plastic.

[0172] By selectively setting the Shore hardness of the flexible wall 16 and the Shore hardness of the first housing 11, the flexible wall 16 can be made to contact human skin to improve the comfort of wearing the headphones, while ensuring that the first housing 11 maintains a stable structural shape and provides stable structural support for related functional components (such as the speaker 12).

[0173] In some embodiments, please refer to Figures 14 to 16 The first housing 11 has a flexible wall 16 at the end away from the connecting portion 30 along its long axis. For example, the projected outline of the flexible wall 16 in the thickness direction is approximately U-shaped. In this way, the flexible wall 16 can cover the entire fifth sidewall and at least a portion of the third sidewall 11-3 and the fourth sidewall 11-4, or the flexible wall 16 can be constructed as part of the housing sidewall of the first housing 11 (that is, the flexible wall 16 can be constructed as the entire fifth sidewall and a portion of the third sidewall 11-3 and the fourth sidewall 11-4). This allows at least a portion of the flexible wall 16 to abut against the concha wall when the headphones are worn, improving the comfort of wearing the headphones.

[0174] In some embodiments, please refer to Figure 19 and combined Figure 16 The first housing 11 may have a second opening communicating with the first accommodating cavity at one end away from the connecting part 30 in the long axis direction. The flexible wall 16 includes a contact layer 16-1 and an inner liner layer 16-2. The Shore hardness of the contact layer 16-1 is less than that of the first housing 11 and the inner liner layer 16-2. For example, the contact layer 16-1 is a one-piece structure made of silicone material, the inner liner layer 16-2 is a one-piece structure made of plastic material, and the first housing 11 is a one-piece structure made of aluminum alloy material.

[0175] In a specific implementation, the contact layer 16-1 can be layered and covered on the outside of the inner liner layer 16-2 by means of bonding, die bonding, welding, etc. The flexible wall 16 formed by the contact layer 16-1 and the inner liner layer 16-2 covers the second opening and is connected and fixed to the first housing 11 (e.g., bonding, welding, snap-fit, etc.), thereby constructing the flexible wall 16 as the entire fifth side wall of the first housing 11 and a part of the third side wall 11-3 and the fourth side wall 11-4.

[0176] Therefore, while ensuring the comfort of wearing headphones based on the flexible wall 16, the split structure combination relationship between the flexible wall 16 and the first housing 11 facilitates the assembly, disassembly and maintenance of the speaker 12, etc., and also helps to reduce the structural complexity and manufacturing difficulty of the sound-emitting part 10 (for example, it is convenient to set the micro-hole array structure of the sound hole as needed); in addition, the inner lining layer 16-2 forms a structural support for the contact layer 16-1, which not only facilitates the structural combination of the flexible wall 16 and the first housing 11, but also helps to maintain the stability of the outline shape of the combination of the first housing 11 and the flexible wall 16.

[0177] In other embodiments, the first housing 11 can be assembled from multiple components, i.e., the first housing 11 itself can adopt a modular assembly structure; for example, the first housing 11 can be composed of two modular sub-housings, which facilitates the assembly, disassembly, and maintenance of the speaker 12, etc.; preferably, in some embodiments, the two sub-housings are symmetrical structures. In some embodiments, the first housing 11 and the flexible wall 16 can also be made of the same material, for example, both the first housing 11 and the flexible wall 16 are made of silicone material; preferably, in some embodiments, the Shore hardness of the surface of the flexible wall 16 is less than the Shore hardness of the surface of the first housing 11.

[0178] As mentioned above, in some embodiments, the inner liner 16-2 and the second opening may be omitted, and the contact layer 12 may be directly attached to the outer side of the sidewall of the first housing 11 by means of adhesive or other means (e.g., covering the entire fifth sidewall and a portion of the third sidewall 11-3 and the fourth sidewall 11-4).

[0179] As mentioned above, in some embodiments, the first housing 11 is a one-piece structure made of metal materials such as aluminum alloy and stainless steel, and the contact layer 16-1 is a one-piece structure made of silicone material; thus, the softness of silicone material can effectively improve the comfort of wearing the headphones, while the first housing 11 made of materials such as aluminum alloy can support the enhancement of the overall metallic texture and quality of the headphones.

[0180] In some embodiments, the flexible wall 16 may have a partitioned structure, with different regions having different Shore hardness or materials; for example, the region of the flexible wall 16 corresponding to the microphone or where the microphone is located may use a relatively hard material (e.g., rigid plastic), while other regions or regions forming the fifth sidewall may use a relatively hard material (e.g., silicone). It can be understood that the microphone or microphone pickup hole may be located in a partition of the flexible wall 16 with a relatively hard material.

[0181] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An earphone, characterized in that, include: A sound-generating part includes a sound-generating component and a first housing that accommodates the sound-generating component; as well as The ear hook includes a connecting part and a battery compartment, wherein the connecting part is connected between the battery compartment and the sound-emitting part; in the wearing state, the battery compartment is hung between the user's ear and head, and the sound-emitting part is worn near the user's external auditory canal but does not block the external auditory canal; The battery compartment includes a battery assembly, a circuit board assembly, and a second housing that houses the battery assembly and the circuit board assembly. When worn, the outer side of the second housing away from the user's skin is provided with an antenna structure. The circuit board assembly is electrically connected to the antenna structure, the battery assembly, and the sound-generating assembly.

2. The headphones as described in claim 1, characterized in that, The antenna structure includes a radiating section, and a hollowed-out slit is provided in the middle of the radiating section.

3. The headphones as described in claim 2, characterized in that, The battery compartment has a length direction and a circumferential direction around the length direction, the length direction being defined as the direction in which the battery compartment approaches or moves away from the connecting part; wherein, the length of the radiating part in the length direction is greater than the width in the circumferential direction, and the hollowed-out gap extends along the long side of the radiating part.

4. The headphones as described in claim 3, characterized in that, In the length direction, the distance from the edge of the radiating part to the hollowed-out gap is greater than 0.1 mm.

5. The headphones as described in claim 2, characterized in that, The antenna structure also includes a power feed section, one end of which is connected to the edge of the radiating section, and the other end of which is electrically connected to the circuit board assembly.

6. The headphones as described in claim 5, characterized in that, The power supply section and the radiating section are an integral structure.

7. The headphones as described in claim 1, characterized in that, The circuit board assembly is provided with a feed point structure, which is electrically connected to the antenna structure.

8. The headphones as described in claim 7, characterized in that, The second housing includes a housing portion and a cover portion having the outer side wall. The housing portion has a receiving cavity and an opening communicating with the receiving cavity. The circuit board assembly and the battery assembly are housed in the receiving cavity. The cover portion seals the opening and is connected to the housing portion. The feed point structure is disposed on the side of the circuit board assembly facing the cover portion.

9. The headphones as described in claim 8, characterized in that, The feed point structure includes an elastic element having a fixed end and a free end that can move relative to the fixed end. The fixed end of the elastic element is fixed to the circuit board assembly, and the free end of the elastic element is elastically electrically connected to the antenna structure.

10. The headphones as claimed in claim 7, characterized in that, The antenna structure includes a conductive sheet attached and fixed to the outer side wall, or the antenna structure includes a conductive pattern formed on the outer side wall.

11. The headphones as claimed in any one of claims 1-10, characterized in that, The interior of the second housing has a clearance area formed on one side of the circuit board assembly, and at least a portion of the antenna structure is located on the outer wall corresponding to the clearance area.

12. The headphones as claimed in claim 11, characterized in that, The battery compartment also includes a metal reflector, which is disposed within the air-avoidance area facing the antenna structure.

13. The headphones as described in claim 12, characterized in that, The battery compartment also includes an insulating protective component, which is disposed between the metal reflector and the antenna structure.

14. The headphones as claimed in claim 12, characterized in that, The battery assembly is located at least partially within the air-protected area. The battery assembly includes a battery body and a metal housing that houses the battery body. The metal housing includes the metal reflector.

15. The headphones as described in claim 13, characterized in that, The battery compartment has a length direction, which is defined as the direction in which the battery compartment is closer to or further away from the connecting portion; wherein, in the length direction, the circuit board assembly is closer to the connecting portion than the battery assembly.

16. The headphones as claimed in claim 11, characterized in that, The circuit board assembly includes multiple rigid circuit boards stacked together, with adjacent rigid circuit boards connected by flexible circuit boards.

17. The headphones as claimed in claim 11, characterized in that, At least a portion of the antenna structure bends and extends from the outer wall into the airspace.

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