Earphone

Abstract

An earphone, comprising an end cover portion, a housing portion, an adapter portion, an earhook portion and a speaker, wherein the end cover portion, the housing portion and the adapter portion are sequentially connected to form a three-segment structure. In the three-segment structure, two sides of the housing portion are respectively provided with a first opening and a second opening, the end cover portion covers the first opening, and the adapter portion covers the second opening; the housing portion forms a cylindrical structure having openings at two ends thereof; and the end cover portion, the housing portion and the adapter portion can be quickly assembled in a long-axis direction. The housing portion forms the cylindrical structure having openings at two ends thereof, and the housing portion of the cylindrical structure facilitates the installation of internal components thereof. The earphone having the three-segment structure can simplify the installation difficulty of the end cover portion, the housing portion, the adapter portion and the speaker, thereby improving the assembly efficiency of the earphone.

Description

A type of headphone Technical Field

[0001] This application relates to the field of acoustic technology, specifically to a type of headphone. Background Technology

[0002] 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. How to rationally design the headphone structure to reduce assembly difficulty and improve assembly efficiency is a very important part of headphone structural design. Summary of the Invention

[0003] This invention provides an earphone that reduces the difficulty of earphone assembly and improves earphone assembly efficiency.

[0004] In one embodiment, an earphone is provided, including an end cap, a housing, an adapter, an ear hook, and a speaker. The end cap, the housing, and the adapter are connected sequentially along their long axis. The ear hook is connected to the end of the adapter away from the housing. The housing has a receiving cavity, and the speaker is at least partially disposed within the receiving cavity. The housing has a first opening communicating with the receiving cavity at one end along its long axis, and a second opening communicating with the receiving cavity at the other end along its long axis. The end cap covers the first opening and is connected to the housing, and the adapter covers the second opening and is connected to the housing. The long axis is not parallel to the vibration direction of the speaker.

[0005] In one embodiment, at least one of the first opening and the second opening is available for the speaker to be inserted into the receiving cavity, and the opening area of ​​the first opening and / or the second opening available for the speaker to be inserted into the receiving cavity is greater than the maximum cross-sectional area of ​​the speaker parallel to the vibration direction of the speaker.

[0006] In one embodiment, the long axis direction is perpendicular to the vibration direction of the loudspeaker.

[0007] In one embodiment, the housing portion further has a thickness direction perpendicular to the long axis direction, and the vibration direction is parallel to the thickness direction; the housing portion includes an inner wall facing the ear in the wearing state, an outer wall away from the ear, an upper wall facing upward and a lower wall facing downward, the outer wall, the upper wall, the inner wall and the lower wall are sequentially connected to form the accommodating cavity, the inner wall and the outer wall are located on both sides of the housing portion in the thickness direction, and the vibration direction of the speaker is towards the inner wall.

[0008] In one embodiment, at least the inner wall is provided with a first through hole penetrating the inner wall, and the first through hole is acoustically connected to the loudspeaker.

[0009] In one embodiment, the outer wall is provided with a second through hole penetrating the outer wall.

[0010] In one embodiment, the system further includes a speaker bracket disposed within the receiving cavity, and the speaker is connected to the speaker bracket; at least one of the first opening and the second opening allows the speaker and the speaker bracket to be inserted together into the receiving cavity.

[0011] In one embodiment, the accommodating cavity is provided with a first limiting part, and the speaker bracket is provided with a second limiting part. The first limiting part and the second limiting part are adapted to be connected to fix the speaker bracket in the accommodating cavity.

[0012] In one embodiment, the accommodating cavity is further provided with a first guide portion extending along the long axis, and the speaker bracket is further provided with a second guide portion. The first guide portion and the second guide portion are adapted to be connected to guide the speaker bracket into the accommodating cavity.

[0013] In one embodiment, a flexible circuit board is further included, which is electrically connected to the speaker and fixed to the speaker bracket.

[0014] In one embodiment, the adapter includes an inner adapter shell, and one end of the inner adapter shell near the housing portion includes an insertion portion, which is inserted into the second opening and connected to the housing portion.

[0015] In one embodiment, the adapter further includes an adapter housing, which covers the outside of the adapter inner housing, and one end of the adapter inner housing protrudes from the adapter housing to form the insertion portion.

[0016] In one embodiment, a third limiting part is provided in the housing portion near the second opening, and a fourth limiting part is provided in the insertion portion. The third limiting part and the fourth limiting part are adapted to be connected to fix the insertion portion in the housing portion.

[0017] In one embodiment, the outer circumferential side of the insertion part is provided with an adhesive groove, which is filled with adhesive material for bonding the housing part and the insertion part.

[0018] In one embodiment, the end face of the housing portion having the second opening is a first inclined surface that is inclined relative to a cross section parallel to the vibration direction of the speaker, and the end face of the adapter housing near the housing portion is a second inclined surface that is inclined relative to a cross section parallel to the vibration direction of the speaker, with the first inclined surface and the second inclined surface in contact.

[0019] In one embodiment, the end of the adapter housing having a second inclined surface extends at least partially above the first adhesive groove.

[0020] In one embodiment, at least part of the end of the adapter housing extending above the first adhesive reservoir protrudes toward the adapter inner housing and extends into the first adhesive reservoir.

[0021] In one embodiment, at least a portion of the housing extends toward the adapter along the long axis to form an outward protrusion, the adapter housing has a concave portion complementary to the outward protrusion, the insertion portion has an exposed area avoided by the concave portion, and the first adhesive groove is located in the exposed area.

[0022] In one embodiment, the housing portion is a one-piece structure or a split structure made of metal or plastic material;

[0023] And / or, the end cap portion includes a contact layer made of silicone or rubber material, the Shore hardness of the contact layer being less than the Shore hardness of the shell portion, and at least a portion of the contact layer abutting against the concha wall when worn.

[0024] In one embodiment, the adapter and the ear hook are an integral structure.

[0025] An earphone according to the above embodiment includes an end cap, a housing, an adapter, an ear hook, and a speaker; wherein the end cap, housing, and adapter are sequentially connected to form a three-section structure. In this three-section structure, the housing has a first opening and a second opening on both sides, the end cap covers the first opening, and the adapter covers the second opening. The end cap, housing, and adapter can be quickly assembled along the long axis. The housing forms a cylindrical structure with openings at both ends, which facilitates the installation of internal components. The three-section earphone structure simplifies the installation of the end cap, housing, adapter, and speaker, improving the assembly efficiency of the earphone.

[0026] The three-section structure of the headphones also improves the stability of speaker installation. The outer wall of the speaker can directly abut against the inner wall of the housing, and the cylindrical housing can restrain, wrap, limit, and fix the speaker, thus improving the stability of speaker installation.

[0027] The three-section headphone structure consists of an end cap, a housing, and an adapter connected sequentially along the long axis of the housing, which is not parallel to the direction of speaker vibration. This design allows the openings at both ends of the housing to be staggered from the through holes on different surfaces of the housing, preventing structural obstruction or interference with sound output at the connection points between the housing and the end cap and adapter.

[0028] The three-section structure of the headphones can also create a more aesthetically pleasing shape. The shell can be made into a one-piece structure, and the outer surface of the cylindrical shell can be smooth and seamless, which is more beautiful. In particular, when the outer surface of the shell is painted, a complete pattern can be formed. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the structure of a human ear according to an embodiment;

[0030] Figure 2 is a structural schematic diagram of an embodiment of the headphones in the wearing state;

[0031] Figure 3 is a schematic diagram of the external structure of an earphone according to an embodiment;

[0032] Figure 4 is a schematic diagram of the structure inside the earphone in one embodiment;

[0033] Figure 5 is a schematic diagram of the structure of an earphone housing and speaker separated along the long axis in one embodiment;

[0034] Figure 6 is a cross-sectional schematic diagram of the housing portion of an earphone according to an embodiment, along a vertical plane along the long axis.

[0035] Figure 7 is a schematic diagram of the end cap portion of an earphone according to an embodiment;

[0036] Figure 8 is a schematic diagram of the end cap portion of an earphone according to an embodiment;

[0037] Figure 9 is a cross-sectional schematic diagram of the shell portion of an earphone according to an embodiment, along a vertical plane along the long axis.

[0038] Figure 10 is a cross-sectional view of the connection between the housing and the adapter of an earphone according to an embodiment, along the vertical plane along the long axis.

[0039] Figure 11 is a schematic diagram of the structure of an earphone according to an embodiment, in which the housing and the adapter are separated along the long axis.

[0040] Figure 12 is a schematic diagram of the structure of the adapter part of an earphone according to an embodiment;

[0041] Figure 13 is an exploded structural diagram of the adapter shell and adapter inner shell of an embodiment of the headphones;

[0042] Figure 14 is a cross-sectional view of the connection between the housing and the adapter of an earphone according to an embodiment, along the vertical plane along the long axis.

[0043] Figure 15 is a schematic diagram of the structure of the separator of an earphone according to an embodiment;

[0044] The reference numerals in the attached diagrams are as follows: 101-external auditory canal, 102-concha cavity, 103-cymba conchae, 104-triangular fossa, 105-antihelix, 106-scaphoid fossa, 107-helix, 108-earlobe, 109-crura of helix, P1-first region, P2-second region, P3-third region, A-first gap space, B-second gap space; 10-end cap portion, 11-first flexible segment, 12-second flexible segment, 121-mounting cavity, 122-receiving hole, 13-first microphone, 10a-contact layer, 10b-inner liner layer; 20-shell portion, 20a-accommodating cavity, 20b-first opening, 20c-second opening, 21-inner wall, 211-first through hole, 22-outer wall. 221-Second through hole, 23-Upper wall, 24-Lower wall, 25-First limiting part, 26-Third limiting part, 27-Outer protrusion, 28-First guide part; 30-Adapter part, 30a-First adapter cavity, 30b-Second adapter cavity, 31-Adapter inner shell, 311-Insertion part, 3111-Fourth limiting part, 3112-First adhesive groove, 32-Adapter outer shell, 321-Inner recess, 33-Separator, 331-Mounting hole, 332-Second adhesive groove, 333-Sealing element, 334-Mounting part; 40-Ear hook part; 50-Speaker, 51-Speaker bracket, 511-Second limiting part, 512-Second guide part, 52-Flexible circuit board, 521-Second electrical connection terminal; 60-Circuit board assembly, 61-Circuit board, 62-First electrical connection terminal. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this 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 this application are not shown or described in the specification. This is to avoid obscuring the core parts of this 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.

[0046] 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.

[0047] 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).

[0048] Figure 1 is a schematic diagram of the physiological structure of an exemplary ear provided in some embodiments of this application. Referring to 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, the aforementioned ear canal can be simply regarded as being located at the bottom of the concha 102.

[0049] 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.

[0050] 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 whole 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 the concha 102, 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 whole or part of the headphone structure can also be located in one or more physiological parts of the ear, for example, in the first region P1 enclosed by the dotted line in Figure 1, which at least includes the cymba concha 103 and triangular fossa 104, or in the second region P2 enclosed by the dotted line in Figure 1, which at least includes the concha 102.

[0051] 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, such as within the third region P3 enclosed by the dotted line in Figure 1.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] Furthermore, the "anterior side of the ear" mentioned in this application is a concept relative to "posterior side of the ear." The former refers to the side of the ear facing the positive axial direction of the external auditory canal 101, while the latter refers to the side facing away from the positive axial direction of the external auditory canal 101. Both refer to the user's ear. The positive axial direction of the external auditory canal 101 refers to the direction in which the axial direction of the external auditory canal 101 is away from the tympanic membrane. Observing the ear of the simulator along the direction of the human coronal axis yields the schematic diagram of the anterior contour of the ear shown in Figure 1.

[0057] 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.

[0058] Please refer to Figures 2 to 15. The headphones provided in some embodiments of this application mainly include an end cap 10, a housing 20, an adapter 30, an ear hook 40, a speaker 50, and a circuit board assembly 60. The headphones may also include a battery assembly, a microphone assembly, and other functional components as needed (such as an antenna structure, a button structure, a wear detection structure, etc.), which will be described in detail below.

[0059] Referring to Figures 3 and 4, the adapter 30 connects the housing 20 and the ear hook 40. The housing 20, adapter 30, and ear hook 40 roughly constitute the overall outline of the earphone. The end cap 10 is connected to the end of the housing 20 away from the adapter 30. The housing 20 provides structural assembly space for components such as the speaker 50 and microphone assembly. One or more of the adapter 30 and ear hook 40 can provide structural assembly space for functional components such as the circuit board assembly 60, battery assembly, and microphone assembly.

[0060] The adapter 30 can be understood as a transition structure connecting the housing 20 and the ear hook 40. For example, the adapter 30 can be a part of the housing 20, such as the part of the housing 20 used to connect the ear hook 40 and occupying a certain structural space can be regarded as the adapter 30. For example, the adapter 30 can also be a part of the ear hook 40, such as the part of the ear hook 40 used to connect the housing 20 and occupying a certain structural space can be regarded as the adapter 30. For example, the housing 20, the adapter 30 and the ear hook 40 are relatively independent structures. By connecting the adapter 30 between the housing 20 and the ear hook 40, the general outline of the headphone can be assembled.

[0061] Referring to Figure 5, the speaker 50 can convert electrical signals into sound signals, which can be used to output noise-reduced sounds, user voices, and audio played according to user needs (such as music, reminder sounds, etc.); the circuit board assembly 60 can be understood as a collection of the headphone's main control board or motherboard and related components. The circuit board assembly 60 plays a role in regulating and managing all or some of the functional components in the headphone; for example, it is used in the headphone to convert and process electrical signals to support the realization of various headphone functions (such as supporting the headphone to turn on and off, switch playback content, increase or decrease volume, etc.).

[0062] In some embodiments, referring to Figure 2, in the wearing state, the housing portion 20 is located on the front side of the ear, and at least part of the ear hook portion 40 is located on the back side of the ear between the ear and the head, so that the earphone is hung on the ear in the wearing state; for example, the housing portion 20 can be set to be located near the external auditory canal 101 but not blocking the external auditory canal 101 in the wearing state, so that the earphone is an open earphone; it should be noted that due to individual differences among different users, when the earphone is worn by different users, the housing portion 20 may partially cover the external auditory canal 101, but the external auditory canal 101 is still not blocked.

[0063] 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.

[0064] Firstly, at least a portion of the ear hook 40 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, thereby increasing the contact area between the ear hook 40 and the ear or head, and thus increasing the resistance to the earphone falling off the ear.

[0065] Secondly, at least a portion of the ear hook 40 is configured as an elastic structure, so that the ear hook 40 has a certain elastic deformation when worn, in order to increase the pressure of the ear hook 40 on the ear or head, thereby increasing the resistance to the headphones falling off the ear.

[0066] Third, at least a portion of the ear hook 40 is configured to rest against the head when worn, so that the ear hook 40 generates a reaction force that presses against the ear, causing the housing portion 20 to press against the front of the ear, thereby increasing the resistance to the headphones falling off the ear.

[0067] Fourth, the shell part 20 and the ear hook part 40 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.

[0068] Fifth, the housing portion 20 or other auxiliary structures connected to the housing portion 20 (such as the adapter portion 30) are configured to extend at least partially into physiological parts such as the concha cavity 102, cymba conchae 103, triangular fossa 104 and scaphoid 106 when worn, thereby increasing the resistance to the earphone falling off the ear.

[0069] Please refer to Figures 2 to 6. In some embodiments, the end cap 10, the housing 20, and the adapter 30 are sequentially connected to form a three-section structure. Alternatively, the adapter 30 and the ear loop 40 can be an integrated structure, in which case the ends of the end cap 10, the housing 20, and the ear loop 40 are sequentially connected to form a three-section structure.

[0070] The housing portion 20 has mutually perpendicular major axis, minor axis, and thickness direction. The thickness direction is parallel to the vibration direction of the speaker 50 within the housing portion 20. When the headphones are worn, the vibration direction of the speaker 50 is parallel to the coronal axis and faces the human body. The vibration direction of the speaker 50 is also towards the inner wall 21 of the housing portion 20 closest to the human body, so that the sound emitted by the speaker 50 propagates towards the ear. When the headphones are worn, the major axis of the housing portion 20 is approximately aligned with the sagittal axis of the human body, but can be slightly tilted relative to the anterior-posterior direction of the human body. The minor axis of the housing portion 20 is approximately aligned with the vertical axis of the human body, and the thickness direction of the housing portion 20 is approximately aligned with the coronal axis of the human body. Referring to Figure 2, the major axis is tilted relative to the sagittal axis of the human body, and is closer to the sagittal axis than the minor axis; the minor axis is tilted relative to the vertical axis of the human body, and is closer to the vertical axis than the major axis.

[0071] The end cap 10, housing 20, and connecting part 30 are sequentially connected and arranged along the long axis of the housing 20, forming a three-section structure along the long axis. The arrangement direction (long axis direction) of this three-section structure is not parallel to the vibration direction of the speaker 50. For example, the long axis direction and the vibration direction form a large intersection angle, or the long axis direction and the vibration direction are perpendicular to each other. This arrangement allows the connection points of the three-section structure to be staggered as much as possible from the vibration direction of the speaker 50, avoiding the impact of gaps that may appear at the connection points of the three-section structure after long-term use on the sound output performance of the speaker 50.

[0072] The housing part 20 can be a cylindrical structure. The cylindrical housing part 20 has a receiving cavity 20a. The housing part 20 has a first opening 20b at one end in the long axis direction and a second opening 20c at the other end in the long axis direction. The first opening 20b and the second opening 20c are located at both ends of the receiving cavity 20a and communicate with the receiving cavity 20a.

[0073] The cylindrical structure of the shell portion 20 can be rectangular, cylindrical, elliptical, or rhomboid, among other shapes. It is understood that any cavity structure with openings at both ends can serve as a specific structure of the shell portion 20 and falls within the scope of protection of this application.

[0074] In this three-section structure, the housing part 20 has a first opening 20b and a second opening 20c on both sides. The end cap part 10 covers the first opening 20b, and the adapter part 30 covers the second opening 20c. The end cap part 10, the housing part 20, and the adapter part 30 can be quickly assembled along the long axis. The housing part 20 forms a cylindrical structure with openings at both ends. The cylindrical structure of the housing part facilitates the installation of its internal components. The three-section structure of the earphone simplifies the installation difficulty of the end cap part 10, the housing part 20, the adapter part 30, and the speaker 50, and improves the assembly efficiency of the earphone.

[0075] The end cap 10 covers the first opening 20b and connects to the housing 20. At least a portion of the end cap 10 rests against the concha wall when worn. The entire end cap 10 or its outer layer can be made of a flexible material to improve user comfort. The adapter 30 covers the second opening 20c and connects to the housing 20. In the finished product, the end cap 10 and the adapter 30 cover the first opening 20b and the second opening 20c, respectively. In some embodiments, the three-section structure is tightly connected, with no gaps at the joints or gaps sealed at the joints by a waterproof structure to ensure the airtightness of the housing 20 and prevent water ingress.

[0076] In some embodiments, the first opening 20b and the second opening 20c have sufficient opening size, and at least one of the opening areas of the first opening 20b and the second opening 20c is larger than the maximum cross-sectional area of ​​the speaker 50 parallel to the vibration direction of the speaker 50. This allows the speaker 50 to be inserted into the receiving cavity 20a of the housing portion 20 through the first opening 20b or the second opening 20c when assembling the headphones 100, and then the end cap portion 10 and the adapter portion 30 are respectively installed in the first opening 20b and the second opening 20c. In this embodiment, installing the speaker 50 into the housing portion 20 through the first opening 20b or the second opening 20c facilitates the installation of the speaker 50.

[0077] In some embodiments, the speaker 50 is installed into the receiving cavity 20a of the housing portion 20 using an insert method, allowing the speaker 50 to be inserted and thus fixedly installed. For example, a limiting part is provided inside the housing portion 20, and a limiting part is provided on the outer shell of the speaker 50. The limiting parts of both are complementary and adaptable structures such as snap-fit ​​and slot. After the speaker 50 is inserted into the receiving cavity 20a of the housing portion 20, the corresponding two limiting parts engage, thereby fixing and limiting the speaker 50. That is, the speaker 50 can be installed and fixed using a one-step insertion method, which simplifies the installation steps and improves installation efficiency. Furthermore, it can ensure the installation accuracy of the speaker 50, making the vibration direction of the speaker 50 parallel to the thickness direction of the housing portion 20.

[0078] In some embodiments, the opening sizes of both the first opening 20b and the second opening 20c can accommodate the insertion and installation of the speaker 50 into the housing portion 20, thus providing greater installation flexibility for the speaker 50. If the structure or positioning structure of the speaker 50 differs, it can be inserted and installed into the housing portion 20 through either the first opening 20b or the second opening 20c, depending on the specific structure. Furthermore, the fact that both the first opening 20b and the second opening 20c can accommodate the speaker 50 also facilitates disassembly during speaker 50 maintenance. For example, the speaker 50 can be inserted through one opening and pulled out through the other, allowing flexible circuit boards to be installed and removed in one direction, preventing damage from folding back.

[0079] It is understood that in some other embodiments of this application, the housing portion 20 may also be formed by combining two housings. When installing the speaker 50 in the accommodating cavity 20a of the housing portion 20, the speaker 50 is first installed on one of the housings, and then the other housing is fixed to the housing on which the speaker 50 is installed, forming the housing portion 20 with openings at both ends, and then the end cap portion 10 and the adapter portion 30 are installed respectively.

[0080] Referring to Figure 3, in this embodiment, the housing portion 20 is an integral cylindrical structure. The long axis of the housing portion 20 is perpendicular to the vibration direction of the speaker 50, including absolute perpendicularity and approximate perpendicularity. The first opening 20b and the second opening 20c are located at the two ends of the housing portion 20 along the long axis. The housing portion 20 can form a straight cylindrical structure, simplifying its structure and allowing the first opening 20b and the second opening 20c to communicate directly with the receiving cavity 20a of the housing portion 20. The first opening 20b, the receiving cavity 20a, and the second opening 20c are distributed on a straight line, allowing the speaker 50 to be linearly inserted into the receiving cavity 20a along the long axis. This structure makes the installation method simpler and more efficient. Furthermore, the opening directions of the first opening 20b and the second opening 20c are completely offset from the vibration direction of the speaker 50. The connection structure at the first opening 20b and the second opening 20c will not affect the sound output of the speaker 50. For example, the connection structure will not obstruct the sound output effect, or if there is a gap in the connection structure, it will not interfere with the sound output effect.

[0081] In this embodiment, the end cap 10, the housing 20, and the adapter 30 are sequentially connected to form a three-section structure. In this three-section structure, the speaker 50 can be directly inserted into the housing 20 through the openings on both sides of the housing 20. This installation method allows for one-step insertion of the speaker 50, eliminating the need to first fix the speaker 50 to one of the housings of the housing 20 before assembly. In other words, the three-section structure of the earphone simplifies the speaker installation steps and improves assembly efficiency.

[0082] The three-section structure of the headphones also improves the stability of the speaker 50 installation. The outer wall of the large-sized speaker 50 can directly abut against the inner wall of the housing 20, and the cylindrical housing 20 can bind, wrap, limit, and fix the speaker 50, thereby improving the stability of the speaker installation.

[0083] The three-section structure of the earphone simplifies the structure of the housing 20. The openings at both ends of the housing 20 can be used as mounting ports or as cable routing ports for flexible circuit boards. The openings at both ends of the housing 20 facilitate electrical connections between the speaker 50 and other components, and simplify the structure of the housing 20, eliminating the need for separate mounting ports and cable routing ports.

[0084] The three-section structure of the earphone can also create a more aesthetically pleasing shape. The shell part 20 can be made into an integrated structure. The outer surface of the cylindrical shell part 20 can be a smooth and seamless surface, which is more beautiful. In particular, when the outer surface of the shell part 20 is painted, a complete pattern can be formed.

[0085] Referring to Figure 6, in some embodiments, one of the first opening 20b and the second opening 20c has a sufficient opening size, that is, the opening area of ​​one of the first opening 20b and the second opening 20c is greater than the maximum cross-sectional area of ​​the speaker 50 parallel to the vibration direction of the speaker 50, and the opening area of ​​the other is smaller than the maximum cross-sectional area of ​​the speaker 50 parallel to the vibration direction of the speaker 50; for example, the opening of the first opening 20b is relatively small, which does not allow the speaker 50 to be inserted and installed into the housing part 20 through the first opening 20b, while the opening of the second opening 20c is relatively large, which allows the speaker 50 to be inserted and installed into the housing part 20 through the second opening 20c; or, the opening of the first opening 20b is relatively large, which allows the speaker 50 to be inserted and installed into the housing part 20 through the first opening 20b, while the opening of the second opening 20c is relatively small, which does not allow the speaker 50 to be inserted and installed into the housing part 20 through the second opening 20c. In this structure, an opening at one end of the housing part 20 allows the speaker 50 to be inserted and installed into the housing part 20, and also allows the speaker 50 to be inserted and installed in one step. It has the advantages of high installation efficiency, more accurate positioning, and more stable structure.

[0086] In some embodiments, the long axis of the housing portion 20 is not parallel to the vibration direction of the speaker 50. For example, the long axis of the housing portion 20 intersects the vibration direction of the speaker 50, and the angle between the long axis of the housing portion 20 and the vibration direction of the speaker 50 is 45° or 60°. In this structure, the speaker 50 can be installed into the receiving cavity 20a of the housing portion 20 along an inclined direction, and the speaker 50 can also be quickly inserted. The first opening 20b and the second opening 20c are also offset from the vibration direction of the speaker 50, and the connection structure at the first opening 20b and the second opening 20c will not affect the sound output of the speaker 50.

[0087] Referring to Figures 3 and 4, in some embodiments, specifically, the housing portion 20 includes an inner wall 21 facing the ear along the vibration direction of the speaker 50 when worn, an outer wall 22 facing away from the ear, an upward-facing upper wall 23, and a downward-facing lower wall 24. The inner wall 21 and outer wall 22 are located on both sides of the thickness direction of the housing portion 20 (the vibration direction of the speaker 50), the upper wall 23 and lower wall 24 are located on both sides of the housing portion 20 along its minor axis, and the first opening 20b and second opening 20c are located on both sides of the housing portion 20 along its major axis. The outer wall 22, upper wall 23, inner wall 21, and lower wall 24 are sequentially connected to form an accommodating cavity 20a. The outer wall 22, upper wall 23, inner wall 21, and lower wall 24 can each be a planar or curved structure. Rounded chamfers can be provided at the points where the outer wall 22, upper wall 23, inner wall 21, and lower wall 24 connect to each other, making the outer contour of the housing portion 20 smoother, improving wearing comfort and aesthetics.

[0088] When the earphone is worn, it has an inner surface facing the user and an outer surface facing away from the user, as well as a side surface connecting the inner and outer surfaces, with a flexible part located on this side surface. In some embodiments of this application, the inner surface of the earphone is the outer surface of the inner wall 21 of the housing portion 20, the outer surface of the earphone is the outer surface of the outer wall 22 of the housing portion 20, and the side surface of the earphone is the surface between the outer surface of the inner wall 21 and the outer surface of the outer wall 22.

[0089] The housing portion 20 can be made of a rigid structural material such as metal or plastic. The rigid structural material housing portion 20 can form a stable accommodating cavity 20a to achieve secure mounting of components such as the speaker 50. In some embodiments, the housing portion 20 is made of metal and has a glossy outer surface to enhance the texture and aesthetics of the headphones.

[0090] The housing portion 20 can be a single-layer structure with a relatively thin thickness. A reinforcing structure can be provided inside the housing portion 20 to minimize the weight of the earphone while ensuring its strength. In some embodiments, this reinforcing structure can also form a snap-fit ​​part to position and secure the speaker 50. The housing portion 20 can also employ a multi-layered composite structure. For example, the housing portion 20 may include an inner liner and an outer layer, where the inner liner is a support layer with relatively high structural strength, and the outer layer is a metal or silicone layer with good tactile and wearing feel.

[0091] The housing portion 20 can be an integral structure, formed from a single material or a mixture of materials. An integrally formed housing portion 20 offers higher structural stability and can also create a seamless surface. It is understood that in other embodiments of this application, the housing portion 20 may also be formed by joining multiple housing portions together through snap-fitting, welding, bonding, or other methods.

[0092] Referring to Figures 3 and 4, in some embodiments, the inner wall 21 of the housing 20 is provided with a first through hole 211 penetrating the inner wall 21. The first through hole 211 forms an acoustic connection with the sound-emitting surface of the speaker 50 (allowing sound to propagate between them), and the sound-emitting surface of the speaker 50 faces the first through hole 211. The first through hole 211 is a sound outlet, allowing sound emitted by the speaker 50 to pass through the first through hole 211 and enter the listener's ear. The outer wall 22 of the housing 20 is provided with a second through hole 221 penetrating the outer wall 22. The sound-emitting surface of the speaker 50 faces away from the second through hole 221. The second through hole 221 is a pressure-reducing hole, providing ventilation and pressure reduction for the speaker 50 within the housing 20, thereby improving the audio playback quality of the speaker 50 and achieving a higher level of active noise cancellation.

[0093] The first through hole 211 and the second through hole 221 can be a micropore array structure. It can be understood that a micropore array structure is an array structure with tiny holes; and these holes can be formed by drilling directly on the side wall of the shell part 20, or they can refer to small holes in the acoustic steel mesh or acoustic yarn (that is, the inner wall 21 or the outer wall 22 can be made of acoustic steel mesh or acoustic yarn).

[0094] On the one hand, by utilizing the micro-pore array structure of the first through hole 211 and the second through hole 221, the rigidity of the shell part 20 can be guaranteed while ensuring the effective area for sound output. This allows the headphones to have sufficient strength while ensuring high-intensity sound output, thereby providing support for ensuring sound quality and enhancing active noise cancellation.

[0095] On the other hand, by setting the first through hole 211 and the second through hole 221 into a micro-hole array structure, and by acoustically connecting the two sides of the speaker 50 in the vibration direction to the first through hole 211 and the second through hole 221 respectively, while ensuring sound output efficiency, it can also balance the internal air pressure when the speaker 50 vibrates. This can avoid the problems that are easily caused by using a single through hole with a large aperture, such as affecting the overall appearance of the headphones, accumulating dirt and impurities, and requiring a separate pressure relief hole. It can also avoid the problems that are easily caused by using a single through hole with a small aperture, such as high acoustic impedance, low sound output efficiency, and poor sound effect.

[0096] In other embodiments, the first through hole 211 and the second through hole 221 can also adopt a single-hole structure or a multi-hole structure with a larger aperture. By covering the first through hole 211 and the second through hole 221 with acoustic steel mesh or acoustic mesh, the technical effect of waterproofing and dustproofing can be achieved while ensuring the effective area of ​​sound output.

[0097] In some embodiments, the housing portion 20 has only a first through hole 211 penetrating the inner wall 21, and the sound-emitting surface of the speaker 50 faces the first through hole 211. The outer wall 22 of the housing portion 20 does not have a second through hole 221. This structure can also meet the needs of some scenarios with lower sound quality requirements or some users with lower sound quality requirements.

[0098] Referring to Figure 5, in some embodiments, the headphones may further include a speaker bracket 51. The speaker bracket 51 can be a frame structure, composed of multiple plates or sheet-like structures. For example, the speaker bracket 51 can be a ring structure. The speaker 50 is installed inside the speaker bracket 51, and the speaker bracket 51 is installed around the speaker 50. The speaker bracket 51 surrounds the sides of the speaker 50 along its long and short axes. The speaker bracket 51 does not cover the sides of the speaker 50 in the vibration direction (thickness direction) to avoid obstructing the sound output of the speaker 50. The speaker bracket 51 can also have other structures, such as a C-shaped structure, which can also achieve the positioning and installation of the speaker 50.

[0099] The speaker bracket 51 is designed to hold the speaker 50 within the housing portion 20. The speaker bracket 51 can be snapped into the housing portion 20, and the speaker 50 can be a standard structural component. Alternatively, the speaker bracket 51 can be snapped into the housing portion 20 using elastic deformation; similarly, the speaker bracket 51 can be fixed to the speaker 50 using elastic deformation. During installation, the speaker 50 is first mounted on the speaker bracket 51, and then the assembly of the speaker 50 and speaker bracket 51 is inserted into the housing portion 20.

[0100] On the other hand, the headphones also include electrical connection components such as a flexible circuit board 52. The speaker bracket 51 can also be used to limit and fix the flexible circuit board 52 and other electrical connection components that are electrically connected to the speaker 50. The flexible circuit board 52 and other electrical connection components can be fixed to the speaker bracket 51 by means of insertion, embedding, or snap-fit. The flexible circuit board 52 and other electrical connection components can also be clamped and installed between the speaker bracket 51 and the speaker 50. After the flexible circuit board 52 and other electrical connection components are fixedly installed on the speaker bracket 51, when they are inserted into the housing part 20 together, the flexible circuit board 52 and other electrical connection components will not be disturbed by the insertion, which can ensure the stability of the electrical connection between the flexible circuit board 52 and other electrical connection components and the speaker 50, and also facilitate the quick installation of the speaker 50 and the flexible circuit board 52 and other electrical connection components.

[0101] In some embodiments, the headphones may not include the speaker bracket 51. The outer side of the speaker 50 may have a corresponding snap-fit ​​or limiting structure inside the housing 20, which can also achieve a fixed connection between the speaker 50 and the housing 20. Alternatively, the outer side of the speaker 50 may be directly bonded to the inner wall of the housing 20 by adhesive or the like. The outer side of the speaker 50 may also be provided with a snap-fit ​​hole or limiting hole or other limiting and fixing structure to install and fix electrical connection components such as the flexible circuit board 52.

[0102] Referring to Figure 5, in some embodiments, the inner sidewall of the housing portion 20 (the sidewall of the accommodating cavity 20a) is provided with a first limiting portion 25, and the speaker bracket 51 is provided with a second limiting portion 511 corresponding to the first limiting portion 25. The first limiting portion 25 and the second limiting portion 511 can be a complementary and adaptable limiting connection structure, for example, one of the first limiting portion 25 and the second limiting portion 511 is a snap-fit, and the other is a slot. The limiting connection of the first limiting portion 25 and the second limiting portion 511 can limit and fix the speaker bracket 51 inside the housing portion 20, thereby limiting and fixing the speaker 50 at a preset position inside the housing portion 20. The first limiting portion 25 and the second limiting portion 511 can be elastically deformed and snapped together, and the elastic deformation force between the first limiting portion 25 and the second limiting portion 511 can improve the stability of the connection between the speaker bracket 51 and the housing portion 20.

[0103] Referring to Figure 5, in some embodiments, the inner sidewall of the housing portion 20 (the sidewall of the accommodating cavity 20a) is provided with a first guide portion 28, and the speaker bracket 51 is provided with a second guide portion 512 corresponding to the first guide portion 28. The first guide portion 28 and the second guide portion 512 are slidable structures that are structurally complementary and adapted to each other. For example, one of the first guide portion 28 and the second guide portion 512 is a groove, and the other is a raised slider, which can slide relative to the groove. The guiding sliding direction of the first guide portion 28 and the second guide portion 512 is parallel to the long axis direction of the housing portion 20, that is, the guiding sliding direction of the first guide portion 28 and the second guide portion 512 is parallel to the insertion direction of the speaker bracket 51. The provision of the first guide portion 28 and the second guide portion 512 allows the assembly of the speaker bracket 51 and the speaker 50 to be inserted into the housing portion 20 along the guiding direction (long axis direction), which can improve the accuracy of inserting and installing the assembly of the speaker bracket 51 and the speaker 50 into the housing portion 20.

[0104] The first guide portion 28 is provided only on one side of the inner wall of the housing portion 20, or the inner wall of the housing portion 20 is provided with asymmetrical multiple first guide portions 28, and one or more second guide portions 512 are provided at the corresponding positions of the speaker bracket 51. With this arrangement, the first guide portion 28 and the second guide portion 512 can play a foolproof role, preventing the speaker 50 from being installed in the wrong direction or in reverse.

[0105] Please refer to Figures 11 to 13. In some embodiments, the adapter 30 includes an inner adapter shell 31 and an outer adapter shell 32. The inner adapter shell 31 is connected to the housing portion 20. The outer adapter shell 32 is fitted over the outer side of the inner adapter shell 31. The outer adapter shell 32 and the inner adapter shell 31 can be connected by snap-fitting, bonding, welding, interference fitting, or other methods. The outer adapter shell 32 can also be connected to the ear hook portion 40 (e.g., the ear hook cover) by bonding, welding, or other methods. The Shore hardness of the outer adapter shell 32 is lower than that of the inner adapter shell 31. For example, the outer adapter shell 32 can be made of silicone or rubber, while the inner adapter shell 31 can be made of a relatively hard plastic material or other insulating material.

[0106] The inner shell 31 of the adapter is relatively rigid, which can stabilize the outline of the adapter part 30 and provide structural support for the assembly of the button structure, circuit board assembly 60, etc., into the adapter part 30. The outer shell 32 of the adapter is relatively soft, which can come into contact with human skin when worn, thereby effectively improving the comfort of wearing the headphones; the combination of soft and rigid materials also facilitates the disassembly and maintenance of the adapter part 30 and its related components, and enhances the stability of the structural connection between the adapter part 30, the shell part 20, and the ear hook part 40.

[0107] In some embodiments, referring to Figures 3 and 4, the adapter shell 32 and the ear hook cover of the ear hook portion 40 are an integral structure. Exemplarily, the adapter shell 32 and the ear hook cover are an integral structure made of silicone material (e.g., a tubular structure); the adapter inner shell 31 is a shell structure made of a hard material such as plastic. The adapter inner shell 31 is inserted into the adapter shell 32 by means of interference fit, bonding, etc., thereby constructing the adapter portion 30 into a cavity-like structural form.

[0108] This allows for the integrity of the outline structure of the ear hook part 40 and the adapter part 30 based on the integrated structure of the adapter shell 32 and the ear hook cover. The adapter part 30 can be quickly formed by inserting the adapter inner shell 31 into the adapter shell 32, and provides support for improving the structural stability of the adapter part 30 and quickly disassembling and assembling related components.

[0109] In some embodiments, the adapter 30 may also be a single-layer structure, and the adapter 30 and the ear hook 40 may also be an integral structure.

[0110] Referring to Figures 11 and 12, in some embodiments, the end of the inner adapter shell 31 near the housing portion 20 protrudes from the outer adapter shell 32 to form an insertion portion 311, meaning that one end of the inner adapter shell 31 is not covered by the outer adapter shell 32. The insertion portion 311 is inserted into the second opening 20c of the housing portion 20 and is fixedly connected to the housing portion 20. The outer surface of the outer adapter shell 32 can be flush with the outer surface of the housing portion 20 to form a smoother, more integrated shape, improving the feel and aesthetics of the headphones.

[0111] A third limiting part 26 is provided on the inner sidewall of the housing part 20 near the second opening 20c, and a fourth limiting part 3111 is provided on the circumferential outer side of the insertion part 311 of the transition inner shell 31. The third limiting part 26 and the fourth limiting part 3111 can be a complementary and adaptable limiting connection structure, for example, one of the third limiting part 26 and the fourth limiting part 3111 is a buckle, and the other is a slot. The snap-fit ​​formed by the third limiting part 26 and the fourth limiting part 3111 can fix the insertion part 311 inside the housing part 20, realizing a fixed connection between the housing part 20 and the transition part 30.

[0112] Referring to Figures 11 and 12, in some embodiments, the circumferential outer wall of the insertion part 311 may also be provided with a first adhesive groove 3112. Before the insertion part 311 is inserted into the housing part 20, adhesive can be pre-filled in the first adhesive groove 3112. After the insertion part 311 is inserted into the housing part 20, the adhesive comes into contact with the inner sidewall of the housing part 20. After the adhesive cures, it bonds and fixes the insertion part 311 and the housing part 20, further improving the stability of the connection between the housing part 20 and the adapter part 30. The adhesive can also play a sealing role, sealing the gap at the connection between the housing part 20 and the adapter part 30 to prevent water from entering from the connection between the housing part 20 and the adapter part 30. The first adhesive groove 3112 can form a receiving cavity to accommodate more adhesive. More adhesive can improve the stability of the bonding between the housing part 20 and the adapter part 30 and improve the sealing effect.

[0113] In some embodiments, the first adhesive reservoir 3112 may be provided on the inner sidewall of the housing portion 20, or the first adhesive reservoir 3112 may not be provided, and the adhesive may be applied to the circumferential outer wall of the insertion portion 311 or the inner sidewall of the housing portion 20, which can also achieve the bonding between the insertion portion 311 and the housing portion 20.

[0114] In some embodiments, no limiting component may be provided between the insertion part 311 and the housing part 20. The insertion part 311 and the housing part 20 can be fixedly connected directly by means of interference fit, bonding or other methods.

[0115] In some embodiments, as shown in Figures 5, 6, and 12, the end face of the housing portion 20 with the second opening 20c is a first inclined surface, which is inclined relative to a cross section parallel to the vibration direction of the speaker 50. If the end face of the housing portion 20 with the second opening 20c is not provided with an inclined surface, then the end face is perpendicular to the outer surface of the housing portion 20; the first inclined surface is inclined relative to the outer surface of the housing portion 20. Correspondingly, the end face of the adapter housing 32 near the housing portion 20 is a second inclined surface, which is inclined relative to a cross section parallel to the vibration direction of the speaker 50. Similarly, the second inclined surface is inclined relative to the outer surface of the adapter housing 32, and the inclination angles of the first and second inclined surfaces are the same and in the same direction. When the housing portion 20 and the adapter housing 32 are mated, the first and second inclined surfaces can be adapted to be mated. The inclination angles of the first and second inclined surfaces can be set according to requirements, for example, both the first and second inclined surfaces can be +45° or both can be -30°. The setting of the first and second inclined surfaces increases the contact area between the adapter housing 32 and the housing part 20, which can improve the stability of the connection between the adapter housing 32 and the housing part 20; and increases the path length from the outside to the inside of the connection between the adapter housing 32 and the housing part 20, which can improve the sealing performance and have a better water-resistant effect.

[0116] In some embodiments, the first and second inclined surfaces can also replace surfaces of other shapes and structures, which can also improve the sealing performance of the adapter housing 32 and the housing portion 20.

[0117] For example, the first and second inclined surfaces can be replaced with complementary wavy or sawtooth surfaces, which can not only increase the contact area between the adapter shell 32 and the housing part 20 and improve the sealing of the adapter shell 32 and the housing part 20, but also limit axial rotation and improve the accuracy of the adapter shell 32 and the housing part 20.

[0118] For example, one of the first inclined surface and the second inclined surface can be replaced with a concave surface and the other with a convex surface. The concave and convex surfaces are adapted to each other, and the mating of the concave and convex surfaces can increase the contact area between the adapter housing 32 and the housing part 20, thereby improving the sealing performance of the adapter housing 32 and the housing part 20.

[0119] In some embodiments, the end face of the adapter housing 32 near the housing portion 20 elastically abuts against the end face of the housing portion 20 having the second opening 20c, thereby making it difficult for external liquid to enter the interior of the housing portion 20 from the joint between the adapter housing 32 and the housing portion 20, thereby achieving a seal between the adapter housing 32 and the housing portion 20 to protect the speaker 50 and the like inside the body portion 20, thereby improving the waterproof effect of the headphones 100.

[0120] In some embodiments, a portion of the adapter housing 32 extends above the first adhesive groove 3112 of the insertion portion 311 of the adapter inner housing 31, for example, the end having a second inclined surface extends at least partially above the first adhesive groove 3112. This arrangement ensures that during installation, the adhesive covers the area below the mating point between the adapter housing 32 and the housing portion 20, providing a better seal at the connection between the adapter housing 32 and the housing portion 20.

[0121] In some embodiments, at least a portion of the housing portion 20 extends along its long axis toward the adapter portion 30 to form an outward protrusion 27. The adapter housing 32 has an inward concave portion 321 that complements the outward protrusion 27. The inward concave portion 321 of the adapter housing 32 can expose a larger area of ​​the adapter inner housing 31. The insertion portion 311 has an inward concave portion 321 that avoids the exposed area, which has a larger area. The first adhesive receiving groove 3112 can be disposed in this exposed area. This arrangement increases the area of ​​the circumferential outer wall of the insertion portion 311 of the adapter inner housing 31, thereby increasing the contact area between the housing portion 20 and the adapter inner housing 31. This structure also allows for a larger volume of the first adhesive receiving groove 3112 to inject more adhesive. More adhesive can improve the stability and sealing of the insertion between the housing portion 20 and the adapter inner housing 31.

[0122] For example, the outer wall 22 of the housing portion 20 has an extended protrusion 27 at one end near the adapter housing 32, and the corresponding front side wall of the adapter housing 32 has a concave portion 321. The protrusion 27 and the concave portion 321 can be arc-shaped edge structures that are convex and concave, respectively. By placing the protrusion 27 on the front side of the housing portion 20, the arc-shaped connection line between the housing portion 20 and the adapter housing 32 can be displayed, which can improve the aesthetics of the design. At the same time, it can be combined with the connection line between the other end of the housing portion 20 away from the adapter housing 32 and the end cover portion 10 to form a symmetrical arc-shaped connection line, which further improves the aesthetics.

[0123] In some embodiments, part or all of the end of the adapter shell 32 protrudes towards the adapter inner shell 31 and extends into the first adhesive groove 3112. The adapter shell 32 is arranged to protrude inward. This protruding part can limit the adapter shell 32 along the long axis direction and increase the contact area between the end of the adapter shell 32 and the adhesive, thereby improving the sealing effect.

[0124] Please refer to Figure 11. In some embodiments, the inner wall 21 and outer wall 22 of the housing 20 may also be provided with an outward protrusion 27 near the end of the adapter housing 32. The adapter housing 32 is provided with corresponding inner and outer recesses, which can further increase the contact area between the housing 20 and the adapter inner housing 31 and improve the sealing of the connection between the housing 20 and the adapter inner housing 31.

[0125] Please refer to Figures 6 to 8. In some embodiments, the end cap 10 is a flexible portion located on the side of the earphone. At least a portion of the flexible portion is positioned where it abuts against the concha wall when the earphone is worn. This allows the flexible portion to abut against the concha wall when the earphone is worn. The flexible portion is an elastic and soft structure that can elastically deform relative to the concha wall under wearing pressure, increasing the contact area with the concha wall and reducing the pressure of the earphone pressing against the concha wall, thereby improving wearing comfort. Furthermore, the elastic deformation of the flexible portion can adapt to the different shapes and sizes of conchas of different people, increasing the contact area between the earphone and the concha wall for different people, ensuring wearing comfort. The flexible portion has a preset length and does not block the gap between the upper side of the earphone and the external auditory canal when the earphone is worn, nor does it block the gap between the lower side of the earphone and the external auditory canal when the earphone is worn. This ensures that the flexible portion provides both wearing comfort and does not affect the open-back design of the earphone.

[0126] The flexible portion is located between the outer surface of the inner wall 21 and the outer surface of the outer wall 22. In some embodiments of this application, the flexible portion is located on the side of the earphone, between the outer surface of the inner wall 21 and the outer surface of the outer wall 22, and the outer surface of the flexible portion is not coplanar with the outer surface of the inner wall 21 and / or the outer surface of the outer wall 22. Specifically, in some embodiments of this application, the outer surface of the flexible portion is not coplanar with either the outer surface of the inner wall 21 or the outer surface of the outer wall 22, and does not protrude from the inner wall 21 or the outer wall 22 of the housing portion 20 in the thickness direction, so as to ensure the aesthetics and overall strength of the earphone 100.

[0127] The flexible part does not cover the inner wall 21 and outer wall 22 of the housing part 20, which can avoid the interference of the flexible part with the through holes on the inner wall 21 and outer wall 22, and reserve a larger area on the inner wall 21 and outer wall 22 for setting through holes for sound output or voltage reduction; in addition, the flexible part is located between the inner wall 21 and outer wall 22, which does not increase the thickness of the headphones, making the headphones smaller and more beautiful.

[0128] The flexible part is connected to the housing part 20, and the outer surface of the flexible part forms part of the side surface of the earphone 100. The flexible part is installed at the position of the first opening 20b of the housing part 20, and the flexible part covers the first opening 20b and is connected to the housing part 20. The flexible part and the housing part 20 enclose a receiving cavity 20a within the housing part 20. By setting the flexible part as a flexible wall structure of the housing part 20, the first opening 20b can be provided on the housing part 20. The first opening 20b has a sufficient opening size, and the first opening 20b can also allow the speaker 50 to be inserted and installed into the receiving cavity 20a, which facilitates the installation of the speaker 50. In some embodiments, the flexible part can be provided on the side wall of the housing part 20, and the flexible part covers the side wall of the housing part 20. When the earphone is worn, the earphone can also rest against the concha wall through the flexible part, improving the wearing comfort.

[0129] Specifically, the flexible part is located at one end of the long axis of the housing part 20. The flexible part is equivalent to the rear wall of the housing part 20 (the wall facing the back of the human body when worn). When the earphone is worn, the flexible part abuts against the concha wall from front to back.

[0130] One end of the flexible portion (the lower end in the wearing state) can extend to be aligned with or flush with the lower wall 24 of the housing portion 20, but the flexible portion does not cover the lower wall 24 of the housing portion 20. Since the portion of the lower wall 24 of the housing portion 20 near the flexible portion in the wearing state has a second gap space B connecting to the external auditory canal with the concha cavity, and the space of the second gap space B is relatively small, the flexible portion does not extend to cover the lower wall 24 of the housing portion 20, thus avoiding the flexible portion blocking or reducing the second gap space B. The flexible portion not covering the lower wall 24 of the housing portion 20 ensures both the comfort of wearing open-back headphones and sufficient transparency of the open-back headphones.

[0131] In some embodiments, while ensuring the headphones are in the open state, one end of the flexible part (the lower end in the wearing state) may also extend to the lower wall 24 of the housing part 20.

[0132] The other end of the flexible portion (the upper end in the wearing state) can extend to align with or be flush with the upper wall 23 of the housing portion 20. Alternatively, the other end of the flexible portion (the upper end in the wearing state) can extend to the upper side of the portion forming the earphone 100, or it can extend to the upper wall 23 covering the portion of the housing portion 20. The upper side of the earphone 100 refers to the side facing the earphone 100 in the wearing state. Because the upper wall 23 of the housing portion 20 and the concha cavity have a first gap space A connecting to the external auditory canal in the wearing state, and the first gap space A is relatively large, and its length along its long axis is greater than that of the second gap space B, the flexible portion can extend along its long axis to the upper wall 23 without blocking the first gap space A, and a reduction in the size of the first gap space A does not affect the earphone's transparency.

[0133] Referring to Figures 3 and 4, in some embodiments, the central plane of the flexible part in the thickness direction coincides with the central plane of the housing part 20 in the thickness direction, and the flexible part is aligned with the middle of the housing part 20 in the thickness direction. The flexible part is centered relative to the front and back of the housing part 20, which makes the connection between the flexible part and the housing part 20 more integrated and aesthetically pleasing. In some embodiments, the flexible part is connected between the outer wall 22 and the inner wall 21, and the inner and outer edges of the flexible part are aligned and connected with the edges of the outer wall 22 and the inner wall 21, respectively. In the wearing state, the flexible part will not form additional inward or outward protrusions, which can improve the wearing comfort.

[0134] Referring to Figures 3 and 4, in some embodiments, the outer surface of the flexible portion protrudes beyond the outer surface of the housing portion 20; wherein, the entire outer surface of the flexible portion protrudes beyond the outer surface of the housing portion 20. When the headphones are worn, the outer surface of the flexible portion can more easily contact the concha wall, and the protruding flexible portion has a larger elastic deformation margin. This also prevents the outer surface of the housing portion 20 from contacting the concha wall after the headphones are squeezed during wear, ensuring that only the elastic and soft flexible portion contacts the body when the headphones are worn, resulting in better wearing comfort. Of course, having only part of the outer surface of the flexible portion protrude beyond the outer surface of the housing portion 20 can also prevent the outer surface of the housing portion 20 from contacting the concha wall when the headphones are worn, further improving wearing comfort.

[0135] The cross-section of the protruding flexible part in the width direction can be a semi-circular or elliptical structure. The flexible part with a semi-circular or elliptical cross-section has a central protrusion, and the height of the two protrusions gradually decreases and extends to connect with the inner wall 21 and outer wall 22 of the shell part 20. The central protrusion ensures that the flexible part can be equipped with a barrier flexible material to improve wearing comfort, and the two sides are flattened to connect with the inner wall 21 and outer wall 22 for a more aesthetically pleasing appearance.

[0136] The flexible portion can be a strip or band structure, extending along the side of the housing portion 20. Specifically, the flexible portion can extend from the rear wall to the upper wall of the housing portion 20. The width of the flexible portion can be equal to or slightly less than the width of the housing portion 20, and the flexible portion does not protrude from the inner wall 21 and outer wall 22 of the housing portion 20.

[0137] Please refer to Figures 6 to 8. In some embodiments, the flexible portion only includes a first flexible segment 11 and a second flexible segment 12 connected together. The first flexible segment 11 and the second flexible segment 12 form an L-shaped or C-shaped structure. The first flexible segment 11 and the second flexible segment 12 are connected to form two adjacent sidewalls of the housing portion 20. The first flexible segment 11 is connected to one end of the housing portion 20 in the long axis direction and forms the rear wall of the housing portion 20. The second flexible segment 12 is connected to the upper wall 23 of the housing portion 20 in the short axis direction when it is worn and forms a part of the upper wall of the housing portion 20.

[0138] The first flexible segment 11 primarily serves to abut against the concha wall. The additional second flexible segment 12 extends from the flexible portion and can cover one side corner of the earphone. This side corner abuts against the concha wall; that is, when the earphone is worn, the portion of the second flexible segment 12 near the first flexible segment 11 also abuts against the concha wall. The arrangement of the first and second flexible segments 11 allows them to completely cover the contact surface between the earphone and the concha wall during wear, increasing the area of ​​the flexible portion abutting against the concha wall and further improving wearing comfort.

[0139] The second flexible segment 12 can be used to accommodate and install electronic components, expanding the functionality of the headphones. For example, the end of the second flexible segment 12 away from the first flexible segment 11 has a mounting cavity 121 and a sound-receiving hole 122. The mounting cavity 121 can be a groove provided on the inner wall of the second flexible segment 12 facing the housing portion 20. The sound-receiving hole 122 is located between the mounting cavity 121 and the outer wall of the first flexible segment 11, connecting the mounting cavity 121 and the outside of the headphones. The first microphone 13 is installed in the mounting cavity 121, and the sound-receiving part of the first microphone 13 is aligned with the sound-receiving hole 122, so that the first microphone 13 can collect sound from outside the headphones through the sound-receiving hole 122. The first microphone 13 can be a microphone or other sound-receiving device.

[0140] The second flexible segment 12 may include a first portion close to the first flexible segment 11 and a second portion away from the first flexible segment 11. The first and second portions are an integral structure and may not have a physical boundary. One end of the first portion is close to and connected to the first flexible segment 11, and the other end of the first portion away from the first flexible segment 11 is connected to the second portion. The portion that rests against the concha wall when the headphones are worn can be defined as the first portion, and the portion that does not rest against the concha wall when the headphones are worn can be defined as the second portion. The mounting cavity 121 and the microphone hole 122 are located in the second portion so that the microphone hole 122 is not blocked when the headphones are worn, allowing the first microphone 13 in the mounting cavity 121 to collect external sound through the microphone hole 122.

[0141] In some embodiments, the first flexible segment 11 and the second flexible segment 12 can be an integrated structure, integrally molded from the same material. For example, the outer surfaces of the first flexible segment 11 and the second flexible segment 12 can be integrally injection molded from a soft material such as silicone. The integrally molded first flexible segment 11 and the second flexible segment 12 have better elastic deformation effect, especially at the turning connection between the first flexible segment 11 and the second flexible segment 12, where there are no gaps, which can ensure the elastic deformation effect at the turning connection and provide a better wearing comfort experience.

[0142] The first flexible segment 11 and the second flexible segment 12 can also be fixedly connected by methods such as bonding or snap-fitting, which can also form a stable structure.

[0143] In some embodiments, the second flexible segment 12 has a preset length. For example, the length of the second flexible segment 12 in the long axis direction does not exceed half the length of the housing portion 20 in the long axis direction. The length of the second flexible segment 12 in the long axis direction can be less than or equal to half the length of the housing portion 20 in the long axis direction. This arrangement ensures that the second flexible segment 12 does not obstruct or block the first gap space A, thus ensuring the transparency of the upper side when the earphone is worn.

[0144] In some embodiments, the flexible portion may only include the first portion of the first flexible segment 11 and the first portion of the second flexible segment 12, excluding the second portion of the second flexible segment 12. The position and structure of the first portion of the first flexible segment 11 and the first portion of the second flexible segment 12 are the same as in the embodiments described above. The first portion of the first flexible segment 11 and the first portion of the second flexible segment 12 covers almost the entire contact surface with the concha wall when the earphone is worn. When the earphone is worn, the earphone rests against the concha wall through the first portion of the first flexible segment 11 and the first portion of the second flexible segment 12, ensuring comfort during wear.

[0145] Please refer to Figure 9. In some embodiments, the flexible portion only includes the first flexible segment 11 and does not include the second flexible segment 12. The position and structure of the first flexible segment 11 are the same as in the above embodiments. The first flexible segment 11 covers most of the contact surface with the concha wall when the headphones are worn. That is, when the headphones are worn, most of the headphones rest against the concha wall through the first flexible segment 11, which also improves the comfort when wearing them.

[0146] Please refer to Figures 6 to 8. In some embodiments, the flexible part can be a multi-layered structure. The flexible part includes at least a contact layer 10a, which is located on the outermost layer of the flexible part. The Shore hardness of the contact layer 10a is less than that of the shell part 20. The contact layer 10a can be made of a material with good softness and elasticity, such as silicone or latex. When the headphones are worn, the contact layer 10a contacts the concha wall. The soft contact layer 10a can contact the concha wall according to the surface deformation of the concha wall, increasing the contact area with the concha wall and improving the comfort when wearing the headphones.

[0147] The flexible part may further include an inner liner 10b, located inside the flexible part. A contact layer 10a surrounds the outer side of the inner liner 10b. The Shore hardness of the contact layer 10a is less than that of the inner liner 10b. The inner liner 10b can be made of hard materials such as plastic, rubber, or metal. The inner liner 10b is fixedly connected to the housing part 20 by snap-fitting, bonding, or other methods. The contact layer 10a can be molded or fixed to the outer side of the inner liner 10b by injection molding, bonding, or other methods. The flexible part, including the contact layer 10a and the inner liner 10b, forms a double-layer structure that is hard inside and soft outside. The inner liner 10b serves as a connection and support structure, while the outer contact layer 10a provides elastic contact with the human body.

[0148] The flexible part can also include a structure composed of more layers or more components. For example, the flexible part can also be set as a three-layer structure, with the hardness of the three layers decreasing sequentially from the inside to the outside. A transition layer is formed between the two layers of flexibility and rigidity, which can improve wearing comfort and prevent the hardest inner structure from squeezing the human body when wearing.

[0149] Please refer to Figures 10 to 15. In one embodiment, the adapter 30 is provided with two independent adapter cavities, and the circuit board assembly 60 is installed in the adapter cavity of the adapter 30.

[0150] The adapter 30 can house the circuit board assembly 60 and other components within its receiving cavity, optimizing the use of internal headphone space, improving headphone space utilization, and reducing headphone size. Furthermore, the adapter 30 has two independent adapter cavities, which can separate the components inside the adapter housing from the speaker 50 inside the housing 20, avoiding or reducing potential electromagnetic interference from the circuit board assembly 60 and other components to the speaker 50. Moreover, the independent adapter cavities, with the circuit board assembly 60 installed within the adapter cavities of the adapter 30, allow for easier and more convenient sealing, providing better protection for the circuit board assembly 60 and other components within the adapter cavities.

[0151] The adapter 30 has two independent adapter cavities, which can separate the components in the adapter housing from the speaker 50 in the housing 20, thereby avoiding or reducing electromagnetic interference that components such as the circuit board assembly 60 may cause to the speaker 50.

[0152] Specifically, the adapter 30 has a receiving cavity, in which a partition 33 is installed. The partition 33 divides the receiving cavity into a first adapter cavity 30a and a second adapter cavity 30b. The partition 33 is sealed to the inner wall of the adapter 30, so that the first adapter cavity 30a and the second adapter cavity 30b are completely separated and can also play a role in preventing water from entering and preventing water from entering.

[0153] The adapter 30 has a larger shape at one end and a smaller shape at the other. The larger end of the adapter 30 is connected to the housing 20, and the smaller end is connected to the ear hook 40. The first adapter cavity 30a and the second adapter cavity 30b can be distributed sequentially from the larger end of the adapter 30 to the smaller end. For example, the first adapter cavity 30a is close to the larger end of the adapter 30, and the second adapter cavity 30b is away from the larger end of the adapter 30; that is, the first adapter cavity 30a is located inside the adapter 30 at the end close to the housing 20, and the second adapter cavity 30b is located inside the adapter 30 at the other end away from the housing 20.

[0154] The first adapter cavity 30a can also communicate with the receiving cavity 20a of the housing part 20. The adapter part 30 has an opening at one end near the housing part 20, which communicates with the first adapter cavity 30a. The opening of the adapter part 30 is complementary to the second opening 20c of the housing part 20. After the adapter part 30 is connected to the housing part 20, the first adapter cavity 30a and the receiving cavity 20a are connected to form a single cavity. This arrangement separates the second adapter cavity 30b from the receiving cavity 20a, allowing components to be installed inside the second adapter cavity 30b, thus separating the components from the speaker 50. Simultaneously, the second adapter cavity 30b forms a sealed cavity, providing waterproof protection for the components within it.

[0155] The first transition cavity 30a and the second transition cavity 30b can also adopt other layouts, such as a vertically layered layout where both extend from the larger end of the transition portion 30 to the smaller end. This layout facilitates the installation of components within the first and second transition cavities 30a and 30b, separates the components within them, facilitates partial structural sealing, and reduces mutual interference between the components.

[0156] In some embodiments of this application, the circuit board assembly 60 is mounted within the second transition cavity 30b, and the circuit board assembly 60 is electrically connected to the speaker 50. The circuit board assembly 60 and the speaker 50 are separated by a separator 33, which can reduce mutual electromagnetic interference between them. The circuit board assembly 60 is located within the sealed second transition cavity 30b, which can prevent external moisture from entering the second transition cavity 30b, and can avoid or reduce the risk of damage such as short circuits caused by moisture to the circuit board assembly 60.

[0157] To achieve electrical connection between the circuit board assembly 60 and the speaker 50, the partition 33 is provided with a mounting hole 331 that penetrates the partition 33. The circuit board assembly 60 includes a circuit board 61 and a first electrical connection terminal 62. The circuit board 61 can be mounted against the partition 33, and the area of ​​the circuit board 61 is larger than the opening area of ​​the mounting hole 331, thus covering the mounting hole 331. Viewed from one side of the first adapter cavity 30a, a portion of the circuit board 61 is exposed through the mounting hole 331. The first electrical connection terminal 62 is mounted in the area of ​​the circuit board 61 exposed through the mounting hole 331, meaning that all or part of the first electrical connection terminal 62 is located within the mounting hole 331, i.e., the first electrical connection terminal 62 is located within the first adapter cavity 30a. The first electrical connection terminal 62, as part of the circuit board assembly 60, extends into the first adapter cavity 30a to achieve electrical connection with the speaker 50, while simultaneously separating the main body of the circuit board assembly 60, the circuit board 61, within the first adapter cavity 30a. This structure enables electrical connection between the circuit board assembly 60 and the speaker 50, while separating the main body of the circuit board assembly 60 from the speaker 50.

[0158] The first electrical connection terminal 62 can be a first plug-in terminal. The speaker 50 is connected to a flexible circuit board, and one end of the flexible circuit board has a second electrical connection terminal 521, which can be a second plug-in terminal. One of the first plug-in terminal and the second plug-in terminal can be a socket terminal, and the other can be a plug terminal. The first plug-in terminal is directly fixed to the circuit board 61 by means of soldering or other methods. The plug terminal and the socket terminal are plugged in to form an electrical connection. By using the connection method of socket terminals and plug-in terminals, the electrical connection between the speaker 50 and the circuit board assembly 60 can be quickly completed by plugging in before the housing part 20 and the adapter part 30 are connected. This method is convenient for assembly and facilitates subsequent disassembly and maintenance.

[0159] The speaker 50 and the circuit board assembly 60 can also be electrically connected in other ways. The first electrical connection terminal 62 itself is a flexible circuit board, which extends into the accommodating cavity 20a and is electrically connected to the speaker 50 body or the flexible circuit board connected to the speaker 50. This method can also achieve electrical connection between the speaker 50 and the circuit board assembly 60.

[0160] In some embodiments, the size of the mounting hole 331 is adapted to the first electrical connection terminal 62, which is inserted into the mounting hole 331, allowing it to extend from the second adapter cavity 30b to the first adapter cavity 30a. The first electrical connection terminal 62 can also simultaneously block the mounting hole 331. With this configuration, using the first electrical connection terminal 62 to block the mounting hole 331, the circuit board 61 can be mounted in other locations within the second adapter cavity 30b to meet the layout requirements of other components.

[0161] In some embodiments, the partition 33 is a partition plate. The partition 33 has a plate structure, which can simplify the structure. At the same time, the two sides of the plate structure are flat. When the circuit board 61 is installed on the side of the partition 33 facing the second transition cavity 30b, the circuit board 61 can be parallel to the partition 33, so that the circuit board 61 can block the mounting hole 331 of the partition 33.

[0162] The separator 33 is an integrally molded separator plate, which can eliminate the splicing gaps on the separator plate and improve the sealing and waterproofing effect.

[0163] The separator 33 can also have other structures. For example, the mounting hole 331 of the separator plate may have an annular plane surrounding the second transition cavity 30b. This annular plane may surround the annular boss in the mounting hole 331, facing away from the surface of the separator; or it may surround the bottom surface of the annular groove recessed around the mounting hole 331; or it may surround the plane recessed around the mounting hole 331. Other parts of the separator plate may be planes, inclined surfaces, curved surfaces, or combinations thereof. In this structure, the circuit board 61 abuts against the annular plane around the mounting hole 331, which can also block the mounting hole 331 to isolate the first transition cavity 30a and the second transition cavity 30b.

[0164] Please refer to Figure 14. The four edges of the partition plate are sealed to the inner wall of the transition part 30 to prevent moisture from entering the first transition cavity 30a or the second transition cavity 30b from the connection between the partition plate and the inner wall of the transition part 30.

[0165] The partition plate has protrusions around its perimeter, or the inner wall of the transition portion 30 has grooves. The partition plate and the inner wall of the transition portion 30 form a second adhesive-containing groove 332, which is filled with adhesive. The second adhesive-containing groove 332 is formed by the partition plate and the inner wall of the transition portion 30, allowing the adhesive to simultaneously contact and connect with both the partition plate and the inner wall of the transition portion 30, thereby sealing the connection between the partition plate and the inner wall of the transition portion 30. The second adhesive-containing groove 332 is located on one side of the second transition cavity 30b, so that after the partition plate is installed into the transition portion 30, the partition plate isolates the adhesive within the second transition cavity 30b. The second adhesive-containing groove 332 and the adhesive do not occupy space in the first transition cavity 30a, which is beneficial for installing a larger speaker 50. Simultaneously, separating the adhesive within the sealed second transition cavity 30b reduces interference from factors such as speaker 50 vibration, improving the stability of the adhesive seal. Of course, the second adhesive reservoir 332 and the adhesive can also be placed on one side of the first transfer cavity 30a, which can also achieve sealing at the connection between the partition plate and the inner wall of the transfer part 30.

[0166] Other structures or components can also be provided between the four edges of the partition plate and the inner wall of the transition part 30 for sealing. For example, an annular step is provided in the storage cavity inside the transition part 30, with the annular step facing the opening of the transition part 30 facing the housing part 20. The partition plate is installed into the annular step inside the transition part 30, and the four edges of the partition plate are fitted to the annular step inside the transition part 30. With this connection structure, adding colloid between the partition plate and the annular step can achieve a sealed connection between the partition plate and the transition part 30.

[0167] Referring to Figure 15, in some embodiments, a sealing element 333 is provided between the separator 33 and the circuit board 61. For example, the separator 33 has an annular groove surrounding the mounting hole 331 on the side facing the circuit board 61. The sealing element 333 is installed in the annular groove. After the circuit board 61 and the separator 33 are fitted together, the sealing element forms a seal on the mounting hole 331, separating the mounting hole 331 from the second transition cavity 30b. The sealing element 333 can further improve the waterproof sealing effect at the mounting hole 331. The annular groove facilitates the installation and fixation of the sealing element 333, prevents misalignment of the sealing element 333, and improves the waterproof stability of the sealing element 333. In this application, the sealing element 333 can be an annular adhesive strip or waterproof foam adhesive that fits the annular groove, which can achieve both sealing of the mounting hole 331 and fixation of the circuit board 61 and the separator 33.

[0168] Alternatively, the separator 33 may not have an annular groove. The seal 333 can be directly disposed between the circuit board 61 and the separator 33, surrounding the mounting hole 331, thus achieving a seal for the mounting hole 331. For example, the seal 333 can be made of adhesive, which can be directly applied to the circuit board 61 and / or the separator 33. After the circuit board 61 and the separator 33 are attached and installed, bonding, fixing, and sealing are achieved.

[0169] Referring to Figure 15, in some embodiments, the partition 33 can also serve as an installation component, or it can be understood as part of the installation component. The partition 33 is used to separate the first transition cavity 30a and the second transition cavity 30b, and the partition 33 is also used to install the circuit board 61. This configuration simplifies the structure within the transition section 30, and allows the circuit board assembly 60 and the partition 33 to be installed as a single unit before being installed together into the transition section 30, optimizing the installation steps and improving installation efficiency; furthermore, it eliminates the need to install the circuit board 61 into the transition section 30, reducing installation difficulty.

[0170] The partition 33 has a mounting part 334 at one end facing the second transfer cavity 30b. The mounting part 334 can be a mounting structure such as a protruding mounting post. The circuit board 61 can be fixedly connected to the mounting part 334 by means of screws, snap-fit, welding, or bonding, or by welding the mounting post, so as to position and install the circuit board 61 on the partition 33.

[0171] In some embodiments, the adapter portion 30 may also be provided with other mounting structures to mount and fix the circuit board assembly 60. For example, the inner wall of the adapter portion 30 may be provided with structures such as protruding mounting posts, which can also achieve positioning, mounting and fixing of the circuit board 61.

[0172] In some embodiments, the circuit board assembly 60 can also be installed in the first transition cavity 30a. The circuit board assembly 60 and the speaker 50 are located in the same cavity, which can simplify the connection between the circuit board assembly 60 and the speaker 50. At the same time, more space can be freed up to install other components in the second transition cavity 30b, so as to achieve the separation and protection of other components.

[0173] In some embodiments, the separator 33 may not be provided inside the adapter 30. The circuit board 61 of the circuit board assembly 60 serves as a separator to divide the receiving cavity into a first adapter cavity 30a and a second adapter cavity 30b. The first electrical connection terminal 62 is provided on the side of the circuit board 61 facing the first adapter cavity 30a. Other components are provided in the second adapter cavity 30b and electrically connected to the circuit board 61, which can also form a relatively independent second adapter cavity 30b, thereby isolating and protecting other components.

[0174] In some embodiments, the circuit board assembly 60 also includes other components to expand the functionality of the headphones. For example, the headphones may also include a second microphone and a battery circuit. The circuit board 61 includes a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion. The first electrical connection portion is electrically connected to a first electrical connection terminal 62, the second electrical connection portion is electrically connected to the second microphone, and the third electrical connection portion is electrically connected to the battery circuit. The first, second, and third electrical connection portions can be electrically connected to the first electrical connection terminal 62, the second microphone, and the battery circuit, respectively, by soldering, enabling the headphones to also have functions such as radio reception.

[0175] The circuit board 61 can be a flexible circuit board, which can be bent along a curve to be electrically connected to the first electrical connection terminal 62, the second radio and the battery circuit located in different spatial positions.

[0176] The second microphone can be a microphone or other sound-receiving device. The adapter 30 has a mounting hole penetrating through it, and the second microphone is mounted inside a housing with a sound-receiving hole. The housing is fixed within the mounting hole of the adapter 30. This arrangement allows the second microphone to be embedded within the housing of the adapter 30, reducing the space occupied by the second adapter cavity 30b. Alternatively, the adapter 30 may have a sound-receiving hole penetrating through it, with the second microphone located inside the adapter 30 and aligned with the sound-receiving hole, also enabling the reception of sound from outside the headphones.

[0177] In some embodiments, the circuit board 61 is a flexible circuit board, and rigid structural plates, such as steel plates, are respectively installed and fixed at the solder joints of the first electrical connection, the second electrical connection, and the third electrical connection. The rigid structural plates can improve the structural stability of the flexible circuit board at the solder joints of the first electrical connection, the second electrical connection, and the third electrical connection, thereby ensuring the welding stability of the solder joints at the first electrical connection, the second electrical connection, and the third electrical connection.

[0178] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An earphone, characterized in that, The device includes an end cap, a housing, a connector, an ear hook, and a speaker. The end cap, housing, and connector are connected sequentially along the long axis. The ear hook is connected to the end of the connector away from the housing. The housing has a receiving cavity, and the speaker is at least partially disposed within the receiving cavity. The housing has a first opening communicating with the receiving cavity at one end along the long axis, and a second opening communicating with the receiving cavity at the other end along the long axis. The end cap covers the first opening and is connected to the housing, and the connector covers the second opening and is connected to the housing. The long axis is not parallel to the vibration direction of the speaker.

2. The headphones as described in claim 1, characterized in that, At least one of the first opening and the second opening is available for the speaker to be inserted into the receiving cavity, and the opening area of ​​the first opening and / or the second opening available for the speaker to be inserted into the receiving cavity is greater than the maximum cross-sectional area of ​​the speaker parallel to the vibration direction of the speaker.

3. The headphones as described in claim 1, characterized in that, The direction of the long axis is perpendicular to the direction of vibration of the loudspeaker.

4. The headphones as described in claim 3, characterized in that, The housing portion also has a thickness direction perpendicular to the long axis direction, and the vibration direction is parallel to the thickness direction; the housing portion includes an inner wall facing the ear when worn, an outer wall away from the ear, an upper wall facing upward and a lower wall facing downward, the outer wall, the upper wall, the inner wall and the lower wall are sequentially connected to form the accommodating cavity, the inner wall and the outer wall are located on both sides of the housing portion in the thickness direction, and the vibration direction of the speaker is towards the inner wall.

5. The headphones as described in claim 4, characterized in that, At least the inner wall is provided with a first through hole that penetrates the inner wall, and the first through hole is acoustically connected to the loudspeaker.

6. The headphones as described in claim 5, characterized in that, The outer wall is provided with a second through hole that penetrates the outer wall.

7. The headphones as described in claim 1, characterized in that, It also includes a speaker bracket disposed within the receiving cavity, and the speaker is connected to the speaker bracket; at least one of the first opening and the second opening allows the speaker and the speaker bracket to be inserted together into the receiving cavity.

8. The headphones as described in claim 7, characterized in that, The accommodating cavity is provided with a first limiting part, and the speaker bracket is provided with a second limiting part. The first limiting part and the second limiting part are adapted to be connected to fix the speaker bracket in the accommodating cavity.

9. The headphones as described in claim 8, characterized in that, The accommodating cavity is further provided with a first guide portion extending along the long axis, and the speaker bracket is further provided with a second guide portion. The first guide portion and the second guide portion are adapted to be connected to guide the speaker bracket into the accommodating cavity.

10. The headphones as claimed in claim 7, characterized in that, It also includes a flexible circuit board, which is electrically connected to the speaker and fixed to the speaker bracket.

11. The headphones as claimed in claim 1, characterized in that, The adapter includes an inner shell, and one end of the inner shell near the housing portion includes an insertion portion, which is inserted into the second opening and connected to the housing portion.

12. The headphones as claimed in claim 11, characterized in that, The adapter also includes an adapter housing, which covers the outside of the adapter inner housing, and one end of the adapter inner housing protrudes from the adapter housing to form the insertion portion.

13. The headphones as claimed in claim 11, characterized in that, A third limiting part is provided inside the housing near the second opening, and a fourth limiting part is provided inside the insertion part. The third limiting part and the fourth limiting part are adapted to be connected to fix the insertion part inside the housing.

14. The headphones as claimed in claim 12, characterized in that, The outer circumferential side of the insertion part is provided with an adhesive groove, which is filled with adhesive material to bond the housing part and the insertion part.

15. The headphones as claimed in claim 14, characterized in that, The end face of the housing portion having the second opening is a first inclined surface that is inclined relative to a cross section parallel to the vibration direction of the speaker, and the end face of the adapter housing near the housing portion is a second inclined surface that is inclined relative to a cross section parallel to the vibration direction of the speaker, with the first inclined surface and the second inclined surface in contact.

16. The headphones as claimed in claim 15, characterized in that, The end of the adapter housing having a second inclined surface extends at least partially above the first adhesive groove.

17. The headphones as claimed in claim 16, characterized in that, The end of the adapter housing extending above the first adhesive reservoir protrudes at least partially toward the adapter inner housing and extends into the first adhesive reservoir.

18. The headphones as claimed in claim 14, characterized in that, At least a portion of the housing extends outward toward the adapter along the long axis to form an outward protrusion. The adapter housing has a concave portion that complements the outward protrusion. The insertion portion has an exposed area that is avoided by the concave portion, and the first adhesive groove is located in the exposed area.

19. The headphones as claimed in any one of claims 1 to 18, characterized in that, The housing is a one-piece or split structure made of metal or plastic material; And / or, the end cap portion includes a contact layer made of silicone or rubber material, the Shore hardness of the contact layer being less than the Shore hardness of the shell portion, and at least a portion of the contact layer abutting against the concha wall when worn.

20. The headphones as claimed in any one of claims 1 to 18, characterized in that, The adapter and the ear hook are an integral structure.

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