Earphone and audio device

Abstract

This application provides an earphone and an audio device. The earphone includes a first earphone body, a connecting arm, and a second earphone body, with the connecting arm connecting the first and second earphone bodies. The second earphone body includes a shell, which has a first pickup hole and a second pickup hole, communicating with the interior of the shell. The first and second pickup holes are used to pick up external sound from the second earphone body. The centers of the outer surfaces of the first and second earphone bodies, and the center of the outer surface of the connecting arm, form a plane of symmetry. The first and second pickup holes are spaced apart along a first direction, which is perpendicular to the plane of symmetry. The first and second pickup holes are symmetrical about the plane of symmetry. Regardless of whether the user wears the earphone in the right or left ear, one of the first and second pickup holes always faces the ground, while the other faces away from the ground.

Description

[0001] This application is a divisional application. The original application has the application number 202410425655.7 and the original application date is April 9, 2024. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This application relates to the field of headphones, and more particularly to a headphone and an audio device. Background Technology

[0003] Clip-on wireless earbuds fit snugly in the ear, reducing ear canal allergies and damage. Users can be aware of changes in their surroundings, minimizing the risk of accidents, and are suitable for extended wear during exercise, commuting, and daily work. Clip-on wireless earbuds consist of a left and a right earbud. The microphone holes on both earbuds should face away from the bottom surface to ensure optimal sound pickup. Users need to distinguish between the left and right earbuds when wearing them. Summary of the Invention

[0004] This application provides an earphone and an audio device.

[0005] In a first aspect, this application provides an earphone. The earphone includes a first earphone body, a connecting arm, and a second earphone body, with the connecting arm connecting the first and second earphone bodies. The second earphone body includes a housing, which has a first pickup hole and a second pickup hole, communicating with the interior of the housing. The first and second pickup holes are used to pick up external sounds from the second earphone body. The centers of the outer surfaces of the first and second earphone bodies, and the center of the outer surface of the connecting arm, are connected to form a plane of symmetry. The first and second pickup holes are spaced apart along a first direction, which is perpendicular to the plane of symmetry. The first and second pickup holes are symmetrical about the plane of symmetry.

[0006] Understandably, when a user wears the headphones, the first earpiece can be held within the user's concha, while the second earpiece is located outside the user's ear and on the side opposite to the first earpiece. A connecting arm is fastened to the outer edge of the user's ear, extending from the concha to the back of the ear. The connecting arm, along with the first and second earpieces, clamps the earpiece onto the user's auricle, thus placing the headphones on the ear. The centers of the outer surfaces of the first, second, and connecting arms form a plane of symmetry, which is approximately perpendicular to the user's ear.

[0007] Compared to a solution with only one pickup hole, this application provides both a first pickup hole and a second pickup hole. When one of the first pickup hole or the second pickup hole is blocked by sweat or dust, the other can still function normally.

[0008] Compared to technical solutions that only provide one of the first and second microphone holes, this application arranges the first and second microphone holes at intervals along a first direction, which is perpendicular to the plane of symmetry. The first and second microphone holes are symmetrically arranged about the plane of symmetry. The first and second microphone holes can be located on opposite sides of the plane of symmetry. When the microphone in the second earphone picks up external sound through the first and second microphone holes for active noise cancellation or calls, regardless of whether the user wears the earphone in the right or left ear, one of the first and second microphone holes always faces the ground, and the other faces away from the ground. The interference effect during sound pickup is consistent and does not change due to spatial position changes. The sound pickup effect of the second earphone is essentially consistent, and the sound output effect of the earphone is also essentially consistent. Furthermore, when using the earphone, regardless of whether the user wears the earphone in the right or left ear, the positions of the first and second microphone holes appear the same. Users no longer need to distinguish between left and right ears when using the earphone.

[0009] In one possible implementation, the second earphone body includes a long axis, which is the line connecting the two farthest endpoints of the outer shell of the second earphone body in a first direction. The first and second pickup holes are located on the side of the long axis closer to the connecting arm.

[0010] Understandably, when a user wears the headphones, the long axis can be roughly perpendicular to the bottom surface. When sweat drips onto the second earphone shell during the wearing process, compared to the design where the first and second pickup holes are located on the long axis, placing the first and second pickup holes on the side of the long axis L1 near the connecting arm allows the sweat to slide down along the curve of the shell. This reduces the risk of sweat dripping directly into the first or second pickup hole, preventing the first or second pickup hole from being blocked by sweat and affecting its sound pickup effect.

[0011] When the user wears the headphones, the second earpiece is located outside the user's ear and on the side opposite to the first earpiece. The connecting arm clips onto the outer edge of the user's ear, extending from the concha to the back of the ear. Positioning the first and second microphone holes on the side of the long axis closer to the connecting arm, compared to a design where the first and second microphone holes are located on the side of the long axis farther from the connecting arm, results in a greater distance from the user's skin and less obstruction. This means that when the microphone inside the second earpiece picks up sound through the first and second microphone holes, it experiences less external obstruction.

[0012] In one possible implementation, the outer shell of the second earphone body is provided with a first connection hole, and the first connection hole and a first pickup hole are spaced apart. The first connection hole is used to allow the end of the connecting arm to extend into the interior of the second earphone body.

[0013] Along the first direction, the projection of the center of the first pickup hole onto the plane of symmetry is the first projection, the projection of the center of the first connecting hole onto the plane of symmetry is the second projection, the distance between the first projection and the second projection is A1, and the distance between the second projection and the center of the outer surface of the second earphone body is A2.

[0014] The relationship between A1 and A2 satisfies:

[0015] Understandably, when a user wears the headphones, the second earpiece is located outside the user's ear and on the side opposite to the first earpiece. The connecting arm 300 is fastened to the outer edge of the user's ear, extending from the concha to the back of the ear. The distance between the first microphone hole and the connecting arm is less than the distance between the first microphone hole and the user's skin. This location of the first microphone hole has less surrounding obstruction, resulting in less external obstruction when the microphone inside the second earpiece picks up sound through the first microphone hole.

[0016] In one possible implementation, the second earphone housing includes a first feedforward microphone and a second feedforward microphone, both located inside the housing. The first feedforward microphone picks up external sound from the second earphone housing via a first pickup hole, and the second feedforward microphone picks up external sound from the second earphone housing via a second pickup hole. The first and second feedforward microphones are symmetrical about a symmetrical plane.

[0017] Understandably, the first and second feedforward microphones can be used for active noise cancellation in headphones. Active noise cancellation is a method that identifies unwanted sound sources as noise and eliminates the original noise by generating an "anti-noise" signal, thus achieving real-time noise cancellation. When users use the headphones, they hear less noise in the sound emitted, resulting in a better user experience. The first and second feedforward microphones are symmetrically positioned, meaning that regardless of whether the user wears the headphones in their right or left ear, the noise information received by the first and second microphones is not significantly different, resulting in a consistent active noise cancellation effect. Therefore, the sound output of the headphones is essentially the same regardless of whether the user wears them in their right or left ear.

[0018] In one possible implementation, the second earphone body has a first conduit located inside the housing, the first conduit connecting to a first pickup hole, and the pickup surface of a first feedforward microphone positioned opposite the first conduit. The first conduit is curved.

[0019] Understandably, when the airflow near the first pickup hole passes through the first duct, the curved duct can buffer the airflow, resulting in less wind noise when the first feedforward microphone picks up sound through the first duct.

[0020] In one possible implementation, the second earphone body includes a first bracket fixed inside the housing of the second earphone body, a first feedforward microphone fixed on the first bracket, and a first conduit located on the first bracket.

[0021] Understandably, compared to a design where the first conduit is directly mounted on the housing of the second earphone, placing the first conduit on the first bracket reduces the difficulty of molding the second earphone housing and facilitates the replacement and maintenance of internal components. The first bracket can support the first feedforward microphone, allowing the microphone to be assembled onto the bracket first before being assembled into the housing of the second earphone, thus simplifying the assembly of the second earphone.

[0022] In one possible implementation, the first earphone body includes a shell and a first capacitance sensor, the first capacitance sensor being disposed inside the shell of the first earphone body. The second earphone body includes a second capacitance sensor and a controller, both the second capacitance sensor and the controller being disposed inside the shell of the second earphone body. The first capacitance sensor and the second capacitance sensor are electrically connected to the controller. The first capacitance sensor is used to acquire a first capacitance value in a first environment, the second capacitance sensor is used to acquire a second capacitance value in a second environment, and the controller is used to determine whether the user is wearing the earphones based on the first capacitance value and the second capacitance value.

[0023] Understandably, compared to solutions that only set a first capacitive sensor or a second capacitive sensor, this application sets a first capacitive sensor on the first earphone body and a second capacitive sensor on the second earphone body. The controller can determine the state of the earphone based on the absolute and relative values ​​of the capacitance generated by the first and second capacitive sensors. This can reduce the risk of accidental touch and improve the accuracy of earphone wear detection.

[0024] In one possible implementation, the outer surface of the first earpiece is symmetrical about the plane of symmetry;

[0025] The outer surface of the second earphone is symmetrical about the symmetrical surface;

[0026] The outer surface of the connecting arm is symmetrical about the symmetrical surface.

[0027] It is understood that the outer surfaces of the first earphone body, the flexible connecting arm, and the second earphone body are completely symmetrical about the plane of symmetry. Therefore, it was originally designed so that the left earphone could be flipped over and worn in the right ear. Thus, users do not need to distinguish between the left and right ears when wearing the earphones provided in this application.

[0028] In one possible implementation, the second earphone housing further includes an antenna module comprising a main body unit and a parasitic unit, both disposed inside the outer shell of the second earphone housing. The outer surface of the second earphone housing is symmetrical about a plane of symmetry, as are the main body unit and the parasitic unit.

[0029] Understandably, when a user wears the earphone in their left ear, the main antenna unit is closer to the user's skin, resulting in more obstruction and making the signal more susceptible to interference. The parasitic unit, located further away from the user, experiences less obstruction and is less prone to interference. When the user wears the earphone in their right ear, the parasitic unit is closer to the skin, while the main unit is located further away. Therefore, regardless of whether the user wears the earphone in their left or right ear, the interference experienced by the antenna module is roughly the same, and the sensitivity of the earphone in playing sound or receiving signals is also relatively similar, resulting in a better user experience.

[0030] In one possible implementation, the second earphone body includes a battery, a first electrode, and a second electrode. Both the first and second electrodes are embedded in the outer shell of the second earphone body and are electrically connected to the battery. The first electrode, the second electrode, the first pickup hole, and the second pickup hole are spaced apart from each other. The outer surface of the second earphone shell is symmetrical about a symmetrical plane. One end of the first electrode and one end of the second electrode are exposed relative to the outer surface of the second earphone shell. The first electrode and the second electrode are symmetrical about a symmetrical plane.

[0031] Understandably, one end of the first electrode and one end of the second electrode are exposed relative to the outer surface of the shell of the second earphone body. The first electrode and the second electrode are symmetrical about the symmetrical surface. Regardless of whether the user wears the earphone in the left or right ear, the first electrode and the second electrode on the shell of the second earphone body look the same, resulting in a better user experience when wearing the earphone.

[0032] In one possible implementation, the first earphone body includes a housing and a speaker. The speaker is fixedly connected to the inner surface of the housing of the first earphone body. The speaker and the inner surface of the housing of the first earphone body enclose a first sub-cavity, and the speaker and the inner surface of the housing of the first earphone body enclose a second sub-cavity. The sound-emitting surface of the speaker faces the first sub-cavity. The outer surface of the first earphone body is symmetrical about a symmetrical plane. The housing of the first earphone body is provided with two pressure relief holes, which connect the second sub-cavity and the outside of the first earphone body. The two pressure relief holes are spaced apart and symmetrical about a symmetrical plane.

[0033] Understandably, compared to a design with only one pressure relief vent, this design features two symmetrical vents, one always facing the ground and the other facing away from it, regardless of whether the user wears the earphone in the left or right ear, ensuring effective pressure relief. Users don't need to distinguish between left and right ears when wearing the earphone. Furthermore, when sweat blocks one vent, the other remains operational to balance the air pressure within the second earpiece cavity.

[0034] In one possible implementation, the first earphone body includes a shell and a bone sensor, the bone sensor being located inside the shell of the first earphone body.

[0035] Understandably, bone vibration sensors can be used to pick up vibrations when a user speaks, which can help reduce noise during calls.

[0036] In one possible implementation, the connecting arm has a first end and a second end spaced apart along its length. The first end is connected to a first earphone body, and the second end is connected to a second earphone body. The central axis directions of the first end and the second end are set at an angle, with the angle ranging from 11.4° to 26°.

[0037] Understandably, compared to a scheme where the central axis of the first end of the connecting arm 300 is parallel to the central axis of the second end of the connecting arm, setting the first and second ends of the connecting arm at an angle ranging from 11.4° to 26° allows the relative positions of the first and second earpieces to better fit the user's ear tilt angle and contour curve when the user wears the earphone 0. This effectively reduces the pressure exerted on the earphone by the first and second earpieces of the earphone 0, resulting in a better user experience.

[0038] In one possible implementation, the connecting arm includes a tube and a wiring harness. The tube has a first channel extending along its length. Openings of the first channel are located on a first end face and a second end face of the tube. The wiring harness is located within the first channel, with one end protruding from the first end face for electrical connection to a first earphone body, and the other end protruding from the second end face for electrical connection to a second earphone body. A gap exists between the wiring harness and the wall of the first channel.

[0039] Understandably, when the connecting arm is bent, the deformation of the wire harness can be less than that of the tube. In other words, when the connecting arm is bent, the stretching of the wire harness is less than that of the tube. This makes the wire harness less prone to breakage and extends its lifespan.

[0040] In one possible implementation, the wiring harness includes a first signal line, a second signal line, a first package, and a second package. The first signal line serves as a current transmission path for the power supply. The second signal line serves as a signal transmission path for the speaker. The second package has a second mounting channel along its length, and the second signal line is assembled within the second mounting channel. The second package and the second signal line constitute a sub-wiring harness. The first package has a first mounting channel along its length, and the sub-wiring harness and the first signal line are jointly assembled within the second mounting channel.

[0041] Understandably, speaker signals are susceptible to interference from other signals, requiring high tolerance to crosstalk. The second signal line is separately packaged into a sub-harness using the second package 343. It is then assembled and packaged together with the first signal line using the first package. This reduces the likelihood of interference from other signal lines, resulting in better headphone sound quality.

[0042] In one possible implementation, the length of the outer shell of the second earphone body in a second direction is less than its length in the first direction. The second direction is the direction from the end of the connecting arm that connects to the second earphone body (i.e., the second end) towards the center of the outer surface of the second earphone body. The length of the outer shell of the second earphone body in a third direction is less than its length in the first direction, and the third direction is perpendicular to both the first and second directions.

[0043] Understandably, the outer shell of the second earphone is generally ellipsoidal. When the user wears the earphone, the first direction is roughly the same as the length direction of the ear. Compared to technical solutions where the first direction is perpendicular to the length direction of the ear, this solution allows the second earphone to fit the curvature of the user's ear more closely, thus improving wearing comfort.

[0044] In one possible implementation, a third gap S1 exists between the connecting arm and the first earphone body. A fourth gap S2 exists between the connecting arm and the second earphone body. The third gap S1 may be larger than the fourth gap S2.

[0045] It is understandable that during the assembly of the connecting arm, the first earphone body, and the second earphone body, due to assembly tolerances, if the angle between the central axis of the first end of the tube and the central axis of the second end of the tube does not reach the preset ideal angle, then fine-tuning can be performed through the third gap S1 between the first connector and the first earphone body to adjust the relative position between the first earphone body and the second earphone body.

[0046] Secondly, this application provides an audio device. The audio device includes an earphone case and earphones, with the earphones housed within the earphone case. Attached Figure Description

[0047] To illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0048] Figure 1 This is a schematic diagram of one embodiment of the headphones provided in this application;

[0049] Figure 2 yes Figure 1 An exploded view of one embodiment of the headphones shown;

[0050] Figure 3 This is a state diagram illustrating one implementation of the headphones provided in this application by a user;

[0051] Figure 4 yes Figure 2 A schematic diagram of the second earpiece shown from another angle;

[0052] Figure 5 yes Figure 4 An exploded view of one embodiment of the second earpiece shown;

[0053] Figure 6 yes Figure 4 A partial cross-sectional view of one embodiment of the second earpiece shown at section line AA;

[0054] Figure 7 yes Figure 5 A schematic diagram of one embodiment of the third outer casing shown;

[0055] Figure 8 yes Figure 5 An assembly schematic diagram of one embodiment of the antenna module and the third housing shown;

[0056] Figure 9 yes Figure 8 An exploded view of one embodiment of the antenna module shown;

[0057] Figure 10 yes Figure 5 A partial structural assembly diagram of the second earphone body is shown below;

[0058] Figure 11 yes Figure 10 The structure shown is a cross-sectional view of one embodiment at section line BB;

[0059] Figure 12 yes Figure 5 An assembly diagram of one embodiment of the first feedforward microphone, the second feedforward microphone, the first bracket, the second bracket, and the second circuit board shown;

[0060] Figure 13 yes Figure 12 The structure shown is a partial cross-sectional view of one embodiment at section line CC;

[0061] Figure 14 yes Figure 10 The structure shown is a partial cross-sectional view of one embodiment at section line DD;

[0062] Figure 15 yes Figure 5 A schematic diagram of one embodiment of the motherboard bracket shown in the figure;

[0063] Figure 16 yes Figure 5 An assembly diagram of one embodiment of the circuit board and motherboard bracket shown;

[0064] Figure 17 yes Figure 16 A schematic diagram of the structure shown in the image from another angle;

[0065] Figure 18 yes Figure 5 A partial structural assembly diagram of the second earphone body is shown below;

[0066] Figure 19 yes Figure 18 A cross-sectional view of one embodiment of the second earpiece shown at section line EE;

[0067] Figure 20 yes Figure 18 A cross-sectional view of one embodiment of the second earpiece shown at section line FF;

[0068] Figure 21 yes Figure 5 A partial structural assembly diagram of the second earphone body is shown below;

[0069] Figure 22 yes Figure 21 The structure shown is a cross-sectional view of one embodiment at section line GG.

[0070] Figure 23 yes Figure 1 The diagram shown is a structural schematic of the headphones from another angle.

[0071] Figure 24 yes Figure 1 A schematic diagram of one embodiment of the first earphone body shown in the figure;

[0072] Figure 25 yes Figure 24 An exploded view of part of the structure of the first earphone body shown in the figure;

[0073] Figure 26 yes Figure 24 A partial cross-sectional view of one embodiment of the first earpiece shown at section line HH;

[0074] Figure 27 yes Figure 24 A partial cross-sectional view of one embodiment of the first earpiece shown at section line II;

[0075] Figure 28 yes Figure 25 A schematic diagram of one embodiment of the wire harness bracket shown in the figure;

[0076] Figure 29 yes Figure 28 The diagram shows the structure of the wire harness bracket from another angle;

[0077] Figure 30 yes Figure 24 A partial cross-sectional view of one embodiment of the first earpiece shown at section line HH;

[0078] Figure 31 yes Figure 25 An assembly schematic diagram of one embodiment of the bone sensor and wire harness support shown;

[0079] Figure 32 yes Figure 24 A partial cross-sectional view of one embodiment of the first earpiece shown at section line II;

[0080] Figure 33 yes Figure 25 A schematic diagram of one embodiment of the first circuit board shown;

[0081] Figure 34 yes Figure 24 A partial structural schematic diagram of one embodiment of the first earphone body shown in the figure;

[0082] Figure 35 yes Figure 34 A schematic diagram of the structure shown in the image from another angle;

[0083] Figure 36 yes Figure 27 An enlarged schematic diagram of one embodiment of the structure shown at point J;

[0084] Figure 37 yes Figure 1 A cross-sectional view of one embodiment of the headphones shown at the OO plane;

[0085] Figure 38 yes Figure 1 A cross-sectional view of one embodiment of the connecting arm shown at section line KK;

[0086] Figure 39 yes Figure 38 A cross-sectional view of one embodiment of the connecting arm shown at section line LL;

[0087] Figure 40 yes Figure 38 A cross-sectional view of one embodiment of the connecting arm shown at section line MM.

[0088] Figure 41 yes Figure 37 An enlarged view of one embodiment of the structure shown at point N;

[0089] Figure 42 yes Figure 38 A cross-sectional view of one embodiment of the wire harness shown at section line PP.

[0090] Figure 43 This is an assembly diagram of one embodiment of the wire harness and the first and second circuit boards;

[0091] Figure 44 This is an assembly diagram of one embodiment of the wire harness, the first circuit board, and the wire harness bracket;

[0092] Figure 45 This is a schematic diagram of one embodiment of the audio device provided in this application. Detailed Implementation

[0093] The embodiments of this application are described below with reference to the accompanying drawings.

[0094] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. It should be understood that when component A is fixedly connected to component C via component B, changes in the relative positional relationship due to deformation of components A, B, and C are permissible. The integrated structure obtained by the two components through a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component, without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to connect the two components.

[0095] The directional terms mentioned in the embodiments of this application, such as "upper", "lower", "side", etc., are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0096] The term "multiple" refers to at least two. The term "more than" includes the stated number. The term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0097] This application provides an earphone 1000 and a pair of earphones. The earphone 1000 is a clip-on wireless earphone (True Wireless Stereo, TWS) that can be clipped onto the ear. Clip-on earphones can reduce ear discomfort and improve wearing comfort. A pair of earphones includes two earphones 1000, which can be divided into a first earphone and a second earphone. The first earphone and the second earphone are used for wearing in the user's left and right ears, respectively. The first and second earphones do not distinguish between left and right ears; that is, the first earphone can be worn in either the left or right ear, and the second earphone can be worn in either the left or right ear. This improves the portability of the earphone 1000.

[0098] In some implementations, the headphones 1000 can be open-back headphones. This eliminates the need for the headphones to penetrate deep into the user's ear canal, reducing ear canal allergies and damage, allowing the user to be aware of changes in their surroundings and minimizing the risk of accidents.

[0099] Figure 1 This is a schematic diagram of one embodiment of the earphone 1000 provided in this application. Figure 2 yes Figure 1 An exploded view of one embodiment of the earphone 1000 shown.

[0100] like Figure 1 and Figure 2As shown, the earphone 1000 is generally U-shaped and includes a first earphone body 100, a second earphone body 200, and a connecting arm 300. The connecting arm 300 is generally U-shaped and connects the first earphone body 100 and the second earphone body 200. The first earphone body 100 is electrically connected to the second earphone body 200. Exemplarily, along the length of the connecting arm 300, the connecting arm 300 has a first end and a second end disposed opposite to each other, the first end connecting to the first earphone body 100 and the second end connecting to the second earphone body 200. Thus, the first earphone body 100 and the second earphone body 200 can be physically connected through the connecting arm 300. Furthermore, the first earphone body 100 and the second earphone body 200 can also be electrically connected through the connecting arm 300. For example, the connecting arm 300 may include a wire harness, one end of which is electrically connected to the first earphone body 100, and the other end of which can be electrically connected to the second earphone body 200.

[0101] For ease of description, the geometric center of the outer surface of the first earphone body 100, the geometric center of the outer surface of the second earphone body 200, and the geometric center of the outer surface of the connecting arm 300 define a unique plane, denoted as the OO plane. Figure 1 (Illustrated by dashed lines). For ease of description, the direction perpendicular to the OO plane is defined as the Z-axis, the direction from the end of the connecting arm 300 connecting to the second earphone body 200 to the center of the second earphone body 200 is defined as the X-axis, and the direction perpendicular to both the X-axis and Z-axis is defined as the Y-axis.

[0102] In some embodiments, the outer surface of the first earphone body 100 may be symmetrical about a symmetrical plane, the outer surface of the second earphone body 200 may be symmetrical about a symmetrical plane, and the outer surface of the connecting arm 300 may be symmetrical about a symmetrical plane. In this way, the earphone 1000 as a whole is symmetrical about a symmetrical plane.

[0103] Figure 3 This is a state diagram of one implementation of the earphone 1000 provided in this application.

[0104] like Figure 3 As shown, the first earphone body 100 can be used to produce sound. When the user uses the earphone, the first earphone body 100 can be held in the user's concha cavity without penetrating into the user's ear canal, that is, the earphone 1000 of this application is an open-back earphone. The tolerance of the human concha cavity is much higher than that of the ear canal, so the earphone 1000 provided by this application can greatly improve the wearing comfort compared with in-ear audio devices.

[0105] The second earphone body 200 is located outside the user's ear and on the side opposite to the first earphone body 100. The connecting arm 300 is fastened to the outer edge of the user's ear, extending from the concha to the back of the ear. It can be understood that the connecting arm 300, together with the first earphone body 100 and the second earphone body 200, clamps the user's auricle, thereby wearing the earphone 1000 on the ear.

[0106] In some embodiments, the connecting arm 300 may be deformable, allowing adjustment of the distance between the first earphone body 100 and the second earphone body 200, from an initial distance to an adjustable distance. The initial distance refers to the distance between the first earphone body 100 and the second earphone body 200 when the earphone 1000 is not worn on the user's ear. The adjustable distance refers to the distance after the initial distance has increased or decreased. It should be noted that both the initial distance and the adjustable distance refer to the distance between the first earphone body 100 and the second earphone body 200; the distance between the facing surfaces of the first earphone body 100 and the second earphone body 200, that is, the distance between the two earphone surfaces 1000 that first come into contact with the ear.

[0107] Understandably, the earphone 1000 equipped with the deformable connecting arm 300 can accommodate users with different ear thicknesses, providing appropriate clamping force for each user and avoiding excessive tightness or looseness that could affect the wearing experience. Simultaneously, when putting on and taking off the earphone 1000 provided in this application, the user can use the connecting arm 300 to increase the distance between the first earphone body 100 and the second earphone body 200 to ensure smooth insertion and removal of the earphone 1000, preventing ear deformation due to pressure and improving the user's experience when putting on and taking off the earphone 1000.

[0108] When a user uses the headphones, the first earphone body 100 can be used to generate sound. For example, the first earphone body 100 may include a speaker, through which sound is generated. The first earphone body 100 can be held within the user's concha, and the second earphone body 200 is located outside the user's ear and on the side opposite to the first earphone body 100. The second earphone body 200 can be used to pick up external noise for use in the active noise cancellation (ANC) design system of the headphones 1000. Active noise cancellation is a method of identifying unwanted sound sources as noise and eliminating the original noise by generating an "anti-noise" signal, thereby eliminating noise in real time. When a user uses the headphones 1000, the sound emitted by the headphones 1000 has less noise, resulting in a better user experience. An embodiment of the second earphone body 200 will be described in detail below with reference to the accompanying drawings.

[0109] In some embodiments, the outer surface of the first earphone body 100 is symmetrical about a first plane of symmetry. The outer surface of the second earphone body 200 is symmetrical about a second plane of symmetry. The outer surface of the connecting arm 300 is symmetrical about a third plane of symmetry. The first, second, and third planes of symmetry are coplanar. Exemplarily, any one of the first, second, and third planes of symmetry can be coplanar with the plane of symmetry (i.e., the 0-0 plane). Thus, the overall appearance of the earphone 1000 is a symmetrical structure, and the user does not need to distinguish between the left and right ears while using the earphone 1000.

[0110] In other embodiments, due to assembly tolerances, there may be an included angle between any two of the three planes of symmetry—the first, second, and third planes of symmetry—with the included angle being less than or equal to 1°. For example, the included angle between any two of the three planes of symmetry can be 0.2°, 0.5°, 0.9°, or 1°, etc. Exemplarily, the included angle between the first and second planes of symmetry can be less than 1°, or the included angle between the first and third planes of symmetry can be less than 1°, or the included angle between the second and third planes of symmetry can be less than 1°.

[0111] Figure 4 yes Figure 2 The diagram shows the structure of the second earphone body 200 from another angle.

[0112] like Figure 2 and Figure 4 As shown, the length D1 of the outer shell 209 of the second earphone body in the first direction is greater than the length D2 in the second direction. The second direction is the direction from the end of the connecting arm 300 that connects to the second earphone body 200 (i.e., the second end) towards the center of the outer surface of the second earphone body 200. The second direction is different from the first direction. Figure 4 The diagram illustrates that the first direction is the Z-axis direction, and the second direction is the X-axis direction. In other embodiments, the first direction can also be any direction in the XZ plane, such as a direction forming a certain angle with the Z-axis. The second direction can also be any direction in the XZ plane, such as a direction forming a certain angle with the X-axis.

[0113] For example, the second earphone body 200 includes a major axis L1. The major axis L1 is the line connecting the two farthest endpoints of the outer shell 209 of the second earphone body 200 in a first direction. The outer shell 209 of the second earphone body 200 may have multiple connecting lines in the first direction, and the major axis L1 is the longest one. The length of the major axis L1 is D1.

[0114] In some implementations, the second plane of symmetry is perpendicular to the first direction (i.e., the Z-axis direction). In this case, the second plane of symmetry is the XY plane.

[0115] In some embodiments, the second earphone body 200 may include a short axis L2. The short axis L2 is the length of the two farthest endpoints of the second earphone body 200 in a second direction. The outer shell 209 of the second earphone body 200 may have a plurality of connecting wires in the second direction, with the short axis L2 being the longest of them.

[0116] For example, the length D2 of the minor axis L2 is in the range of 11.44 mm to 13.44 mm. For instance, the length D of the minor axis L2 can be 11.44 mm, 12.44 mm, or 13.44 mm.

[0117] In some embodiments, the length of the outer shell 209 of the second earphone body 200 in the second direction is less than its length in the first direction. The length of the outer shell 209 of the second earphone body 200 in a third direction is less than its length in the first direction; the third direction and the second direction are different from the first direction. (See attached image.) Figure 2 The diagram illustrates that the third direction is the Y-axis. In other embodiments, the third direction can also be any direction in the XY plane, such as a direction that forms a certain angle with the Y-axis. In this way, the second earphone body 200 can be approximately ellipsoidal, and when the user wears the earphone 1000, the longer direction of the ellipsoid is approximately the same as the length direction of the ear.

[0118] In some embodiments, the outer shell 209 of the second earphone body 200 can be bean-shaped. It is understood that the bean-shaped design of the second earphone body 200 conforms to the curvature of the user's ear when worn, improving wearing comfort. When the user wears the earphone 1000, the first direction is approximately the same as the length direction of the ear.

[0119] Figure 5 yes Figure 4 An exploded view of one embodiment of the second earphone body 200 shown. Figure 6 yes Figure 4 The second earphone body 200 shown is a partial cross-sectional view of one embodiment at section line AA.

[0120] like Figure 5 and Figure 6As shown, the second earphone body 200 may include a housing 209, an antenna module 230, a battery 240, a motherboard bracket 250, a motherboard 260, a first bracket 271, a second bracket 272, a first feedforward microphone 273, a second feedforward microphone 274, a second circuit board 280, a second capacitive sensor 290, and a charging terminal 291. The antenna module 230, battery 240, motherboard bracket 250, motherboard 260, first bracket 271, second bracket 272, first feedforward microphone 273, second feedforward microphone 274, second circuit board 280, and second capacitive sensor 290 may all be disposed inside the housing 209 of the second earphone body 200.

[0121] For example, the outer shell 209 of the second earphone body 200 may include a third outer shell 210 and a fourth outer shell 220. The third outer shell 210 is connected to the fourth outer shell 220, enclosing the second space 201. The antenna module 230, battery 240, motherboard bracket 250, motherboard 260, first bracket 271, second bracket 272, first feedforward microphone 273, second feedforward microphone 274, second circuit board 280 and second capacitive sensor 290 may all be disposed within the second space 201.

[0122] like Figure 6 As shown, the third housing 210 may have an outer surface 211, an inner surface 212, and a third end face 213. The outer surface 211 and the inner surface 212 are arranged opposite to each other, with the inner surface 212 facing the second space 201. The third end face 213 connects the outer surface 211 and the inner surface 212. The fourth housing 220 may have an outer surface 221, an inner surface 222, and a fourth end face 223. The outer surface 221 and the inner surface 222 are arranged opposite to each other, with the inner surface 222 facing the second space 201. The fourth end face 223 connects the outer surface 221 and the inner surface 222.

[0123] When the third outer shell 210 is connected to the fourth outer shell 220, the third end face 213 of the third outer shell 210 is connected to the fourth end face 223 of the fourth outer shell 220. The outer surface 211 of the third outer shell 210 and the outer surface 221 of the fourth outer shell 220 constitute the outer surface of the second earphone body 200. The inner surface 212 of the third outer shell 210 and the inner surface 222 of the fourth outer shell 220 constitute the inner surface of the second earphone body 200. The inner surface 212 of the third outer shell 210 and the inner surface 222 of the fourth outer shell 220 enclose the second space 201.

[0124] In some embodiments, the third housing 210 may be symmetrical about the second symmetry plane. The fourth housing 220 may also be symmetrical about the second symmetry plane. Thus, the outer surface of the second earphone body 200, formed by the outer surface 211 of the third housing 210 and the outer surface 221 of the fourth housing 220, may also be symmetrical about the second symmetry plane.

[0125] Figure 7 yes Figure 5 The diagram shows a structural schematic of one embodiment of the third housing 210 shown.

[0126] like Figure 7 As shown, the third housing 210 is provided with a first pickup hole 214 and a second pickup hole 215 spaced apart. The first pickup hole 214 connects the outer surface 211 and the inner surface 212 of the third housing 210. The second pickup hole 215 can connect the outer surface 211 and the inner surface 212 of the third housing 210.

[0127] In some embodiments, the first pickup hole 214 and the second pickup hole 215 may be arranged at intervals along a first direction. In some embodiments, the first pickup hole 214 and the second pickup hole 215 may be symmetrical about a second symmetry plane.

[0128] The third housing 210 has a first charging port 216 and a second charging port 217 spaced apart. The first charging port 216, the second charging port 217, the first microphone hole 214, and the second microphone hole 215 are spaced apart. The first charging port 216 connects to the outer surface 211 and the inner surface 212 of the third housing 210. The second charging port 217 connects to the outer surface 211 and the inner surface 212 of the third housing 210.

[0129] In some embodiments, the first charging port 216 and the second charging port 217 may be arranged at intervals along the first direction.

[0130] In some embodiments, the first charging port 216 and the second charging port 217 may be symmetrical about a plane of symmetry (i.e., the 0-0 plane).

[0131] The third housing 210 may also be provided with a first connection hole 218. The first connection hole 218 is spaced apart from the first pickup hole 214, the second pickup hole 215, the first charging hole 216, and the second charging hole 217. The first connection hole 218 connects the outer surface 211 and the inner surface 212 of the third housing 210.

[0132] In some embodiments, the first pickup hole 214 and the second pickup hole 215 may be arranged at intervals along the first direction and located on both sides of the first connecting hole 218. Figure 8 yes Figure 5 The diagram shows an assembly schematic of one embodiment of the antenna module 230 and the third housing 210 shown.

[0133] like Figure 8As shown, the antenna module 230 can be fixedly connected to the inner surface 212 of the third housing 210. Exemplarily, the antenna module 230 can be fixedly connected to the inner surface 212 of the third housing 210 by means of adhesive, welding or other methods.

[0134] In some embodiments, the inner surface 212 of the third housing 210 may be provided with a first positioning post 2121. The first positioning post 2121 may be formed by a protrusion on the inner surface 212. Simultaneously, the antenna module 230 may be provided with a corresponding positioning hole 233. When the antenna module 230 is installed onto the third housing 210, the first positioning post 2121 is at least partially located within the positioning hole 233. It is understood that by providing the first positioning post 2121 and the positioning hole 233, rapid positioning can be facilitated during the assembly process of the antenna module 230, and displacement of the antenna module 230 can be prevented in subsequent assembly processes.

[0135] In some implementations, the antenna module 230 may be symmetrical about the symmetry plane OO.

[0136] Figure 9 yes Figure 8 An exploded view of one embodiment of the antenna module 230 shown.

[0137] like Figure 9 As shown, the antenna module 230 may include an encapsulation structure 231 and an antenna structure 232. The antenna structure 232 is embedded within the encapsulation structure 231. The encapsulation structure 231 serves to protect and insulate the antenna structure 232. The antenna structure 232 can be used to transmit and receive antenna signals.

[0138] In some implementations, the antenna structure 232 can be symmetrical about the plane of symmetry OO. In this way, regardless of whether the user wears the earphone 1000 in the left or right ear, the interference experienced by the antenna module 230 is relatively small, and the sensitivity of the earphone 1000 in playing sound or receiving signals is also relatively similar, resulting in a better user experience.

[0139] In some embodiments, antenna module 230 may employ a monopole antenna with parasitic elements. Exemplarily, antenna structure 232 includes a main unit 2311, a parasitic element 2312, a grounding trace 2313, and a feed trace 2314. The main unit 2311 and the parasitic element 2312 are spaced apart and insulated from each other. One end of the feed trace 2314 is connected to the main unit 2311, and the other end is connected to the main board 250 (not shown). The feed trace 2314 is used to supply power to the main unit 2311. One end of the grounding trace 2313 is connected to the parasitic element 2312, and the other end is connected to the main board 250 (not shown). The grounding trace 2313 is used to ground the parasitic element 2312. The main unit 2311 is a monopole antenna. The parasitic element 2312 serves as a parasitic element. During the operation of antenna module 230, the main board 250 (not shown) can supply power to the main unit 2311 through the feed line 2314, activating the main unit 2311. After the main unit 2311 is powered on, it couples and excites the parasitic unit 2312. A capacitive coupling excitation parasitic mode can be formed between the main unit 2311 and the parasitic unit 2312, so the parasitic unit 2312 can also have the functions of antenna module 230.

[0140] In some implementations, the main unit 2311 and the parasitic unit 2312 can be symmetrical about the symmetry plane 0-0. It is understood that during operation, when the main unit 2311 of the antenna module 232 is close to the user's skin, it experiences more obstruction and is more susceptible to signal interference, while the parasitic unit 2312 is located further away from the user, experiencing less obstruction and being less prone to signal interference. Conversely, when the parasitic unit 2312 is close to the user's skin, the main unit 2311 is located further away from the user. Thus, regardless of whether the user wears the earphone 1000 in the left or right ear, the signal interference experienced by the antenna module 230 is roughly the same, and the sensitivity of the earphone 1000 in playing sound or receiving signals is also relatively similar, resulting in a better user experience.

[0141] In some embodiments, the distance between the main body unit 2311 and the parasitic unit 2312 along the Z-axis can be 0.5 mm.

[0142] In some embodiments, the length L of the antenna module 230 along the Z-axis can be 13.8 mm. The width W of the antenna module 230 along the X-axis can be 5.9 mm.

[0143] In some implementations, antenna module 230 may be a flexible printed circuit (FPC) antenna. It is understood that, compared to other forms of antenna module 230, FPC antennas are smaller in size and more flexible, offering greater flexibility in deployment.

[0144] Figure 10 yes Figure 5 The diagram shows a partial structural assembly of the second earphone body 200. Figure 11 yes Figure 10 The diagram shows a cross-sectional view of one embodiment of the structure at section line BB.

[0145] like Figure 10 and Figure 11 As shown, the battery 240 can be disposed on the side of the antenna module 230 away from the third housing 210. The battery 240 can be fixedly connected to the inner surface 212 of the third housing 210. Exemplarily, the battery 240 can be fixedly connected to the inner surface 212 of the third housing 210 by adhesive.

[0146] In some embodiments, the battery 240 and the antenna module 230 are positioned opposite each other and spaced apart along the Y-axis. For example, the distance between the battery 240 and the antenna module 230 along the Y-axis may be greater than or equal to 0.2 mm; for instance, the distance between the battery 240 and the antenna module 230 may be greater than or equal to 0.23 mm.

[0147] Along a first direction (i.e., the Z-axis direction), a first bracket 271 and a second bracket 272 are spaced apart on both sides of the battery 240. The first bracket 271 and the second bracket 272 are spaced apart from the antenna module 230. Exemplarily, the first bracket 271 and the second bracket 272 can be fixedly connected to the third housing 210. For example, the first bracket 271 and the second bracket 272 can be fixedly connected to the third housing 210 by adhesive. A first feedforward microphone 273 is fixedly connected to the first bracket 271. The first feedforward microphone 273 is spaced apart from the battery 240 and the antenna module 230. A second feedforward microphone 274 is fixedly connected to the second bracket 272. The first feedforward microphone 273 is spaced apart from the battery 240 and the antenna module 230. The first bracket 271 can be used to support the first feedforward microphone 273. The second bracket 272 can be used to support the second feedforward microphone 274. The first feedforward microphone 273 and the second feedforward microphone 274 are used for active noise cancellation, picking up ambient sounds (i.e., external noise) near the second earphone body 200 and outputting inverted sound to cancel out the ambient sounds. Exemplarily, the first feedforward microphone 273 can be fixedly connected to the side of the first bracket 271 away from the battery 240. The second feedforward microphone 274 can be fixedly connected to the side of the second bracket 272 away from the battery 240. In this case, the first feedforward microphone 273 and the second feedforward microphone 274 are arranged at intervals along the Z-axis direction.

[0148] In some implementations, the first support 271 and the second support 272 may be symmetrical about the 0-0 plane.

[0149] In some implementations, the first feedforward microphone 273 and the second feedforward microphone 274 may be symmetrical about the 0-0 plane.

[0150] Figure 12 yes Figure 5 The diagram shows an assembly schematic of one embodiment of the first feedforward microphone 273, the second feedforward microphone 274, the first bracket 271, the second bracket 272, and the second circuit board 280. Figure 13 yes Figure 12 The diagram shows a partial cross-sectional view of one embodiment of the structure at section line CC.

[0151] like Figure 12 and Figure 13 As shown, the first feedforward microphone 273 and the second feedforward microphone 274 are connected to and electrically connected to the second circuit board 280. A first bracket 271 and a second bracket 272 are connected to the second circuit board 280. Exemplarily, the second circuit board 280 is disposed between the first feedforward microphone 273 and the first bracket 271. The first bracket 271 can also be used to support this portion of the second circuit board 280 connected between the first feedforward microphone 273 and the first bracket 271. The second circuit board 280 is disposed between the second feedforward microphone 274 and the second bracket 272. The second bracket 272 can also be used to support this portion of the second circuit board 280 connected between the second feedforward microphone 274 and the second bracket 272.

[0152] Figure 14 yes Figure 10 The diagram shows a partial cross-sectional view of one embodiment of the structure at section line DD.

[0153] like Figure 14 As shown, the second earphone body 200 may have a first conduit 2711, which is located inside the outer shell of the second earphone body 200. The first conduit 2711 connects to the first pickup hole 214, and the pickup surface of the first feedforward microphone 273 is positioned opposite to the first conduit 2711. The second earphone body 200 may also have a second conduit 2721, which is located inside the outer shell 209 of the second earphone body 200. The second conduit 2721 connects to the second pickup hole 215, and the pickup surface of the second feedforward microphone 274 is positioned opposite to the second conduit 2721.

[0154] For example, the first bracket 271 may be provided with a first conduit 2711. One end of the first conduit 2711 is disposed opposite to and communicates with the first pickup hole 214. The other end of the first conduit 2711 is disposed opposite to the pickup surface of the first feedforward microphone 273. In this way, external noise from the second earphone body 200 near the first pickup hole 214 can pass through the first pickup hole 214 and the first conduit 2711 to reach the vicinity of the pickup surface of the first feedforward microphone 273 and be picked up by the first feedforward microphone 273. The second bracket 272 may also be provided with a second conduit 2721. One end of the second conduit 2721 may be disposed opposite to and communicate with the second pickup hole 215. The other end of the second conduit 2721 may be disposed opposite to the pickup surface of the second feedforward microphone 274. In this way, external noise from the second earphone body 200 near the second pickup hole 215 can pass through the second pickup hole 215 and the second conduit 2721 to reach the vicinity of the pickup surface of the second feedforward microphone 274 and be picked up by the second feedforward microphone 274.

[0155] In other embodiments, the second earphone body 200 may also omit the first bracket 271 and the second bracket 272. In this case, the first conduit 2711 and the second conduit 2721 may be formed by the third housing 210.

[0156] In other embodiments, the second earphone body 200 may not have the first bracket 271 and the second bracket 272. In this case, the pickup surface of the first feedforward microphone 273 and the first pickup hole 214 are arranged opposite to each other, and the pickup surface of the second feedforward microphone 274 and the second pickup hole 215 are arranged opposite to each other. The first feedforward microphone 273 picks up external noise from the second earphone body 200 through the first pickup hole 214. The second feedforward microphone 274 picks up external noise from the second earphone body 200 through the second pickup hole 215.

[0157] In some embodiments, the first pickup hole 214 and the second pickup hole 215 may be arranged at intervals along a first direction. The first pickup hole 214 and the second pickup hole 215 may be located on opposite sides of a second plane of symmetry.

[0158] In some embodiments, the first pickup hole 214 and the second pickup hole 215 may also be symmetrical about the 0-0 plane of the earphone 1000.

[0159] Understandably, compared to a solution with only one of the first microphone hole 214 or the second microphone hole 215, having both microphone holes 214 and 215 symmetrical about the 0-0 plane ensures that, regardless of whether the user wears the earphone 1000 in the left or right ear, one of the microphone holes 214 and 215 is always located on the side furthest from the skin. This ensures that, without the user distinguishing between left and right ears, when the earphone 1000 is working, the microphone hole 273 or the microphone hole 274 located on the side furthest from the user's skin can pick up ambient noise better, resulting in better active noise cancellation. Furthermore, regardless of whether the user wears the earphone 1000 in the left or right ear, one of the microphone holes 214 and 215 will always face the ground, and the other will face the side furthest from the ground. Even if the microphone hole facing away from the ground becomes blocked by sweat, the other microphone hole can still function normally, achieving active noise cancellation.

[0160] It should be noted that when the first pickup hole 214 and the second pickup hole 215 are symmetrical about the 0-0 plane of the headphone 1000, it can mean that the center of the first pickup hole 214 and the center of the second pickup hole are symmetrical about the 0-0 plane. The projection of the first pickup hole 214 on the 0-0 plane and the projection of the second pickup hole 215 on the 0-0 plane can partially coincide.

[0161] In some embodiments, the line connecting the center of the first pickup hole 214 and the center of the second pickup hole 215 can form an angle with the 0-0 plane, and the angle can be in the range of 88° to 90°.

[0162] In some embodiments, the projection of the center of the first pickup hole onto the plane of symmetry is a first projection, and the projection of the center of the second pickup hole onto the plane of symmetry is a third projection, with the first projection and the third projection coinciding.

[0163] In some embodiments, the projection of the first pickup hole 214 onto the 0-0 plane and the projection of the second pickup hole 215 onto the 0-0 plane may not completely coincide. The distance between the first projection and the third projection may be less than 0.5 mm.

[0164] The following describes two working modes of active noise cancellation using the first feedforward microphone 273 and the second feedforward microphone 274:

[0165] (1) During the active noise reduction process of the headphone 1000, the first feedforward microphone 273 and the second feedforward microphone 274 can work simultaneously to pick up the sound near the first pickup hole 214 and the second pickup hole 215. The two data are fused together by the algorithm to perform active noise reduction.

[0166] (2) When the low-frequency signal of one of the first feedforward microphones 273 and the second feedforward microphone 274 is greater than the low-frequency signal of the other, the signal with the larger low-frequency signal can be automatically selected by a circuit switch as the input signal of the algorithm for active noise reduction. The signal with the larger low-frequency signal has less wind noise, which helps to improve the effect of active noise reduction.

[0167] In some embodiments, the first pickup hole 214 may be located on the side of the major axis L1 closest to the first connecting hole 218. Similarly, the second pickup hole 215 may be located on the side of the major axis L1 closest to the first connecting hole 218. Exemplarily, both the first pickup hole 214 and the second pickup hole 215 may be located on the side of the major axis L1 closest to the first connecting hole 218, and the first pickup hole 214 and the second pickup hole 215 may be symmetrical about the symmetry plane O-O of the earphone 1000. Figure 2 As shown, the first connection hole 218 is used to allow one end of the connecting arm 300 to extend into the interior of the second earphone body 200.

[0168] Understandably, compared to the solution where the long axis L1 passes through the first pickup hole 214 and the second pickup hole 215, placing the first pickup hole 214 and the second pickup hole 215 on one side of the long axis L1 can reduce the risk of sweat dripping into the first pickup hole 214 or the second pickup hole 215 when the user wears the headphones 1000, thus avoiding the first pickup hole 214 or the second pickup hole 215 being blocked by sweat and affecting the sound pickup effect.

[0169] In some embodiments, along the first direction, the projection of the center of the first pickup hole 214 onto the plane of symmetry is the first projection, the projection of the center of the first connecting hole 218 onto the plane of symmetry is the second projection, the distance between the first projection and the second projection is A1, and the distance between the second projection and the center of the outer surface of the second earphone body 200 is A2.

[0170] The relationship between A1 and A2 satisfies:

[0171] Understandably, when a user wears the earphone 1000, the second earphone body 200 is located outside the user's ear and on the side opposite to the first earphone body 100. The connecting arm 300 is fastened to the outer edge of the user's ear, extending from the concha to the back of the ear. The distance between the first pickup hole 214 and the connecting arm 300 can be less than the distance between the first pickup hole 214 and the user's skin. This location of the first pickup hole has fewer obstructions around it, so when the microphone inside the second earphone body 200 picks up sound through the first pickup hole 214, it experiences less external obstruction.

[0172] like Figure 13As shown, when the second circuit board 280 is positioned between the first feedforward microphone 273 and the first bracket 271, the second circuit board 280 may have a first vent 281, which connects to the first conduit 2711. In this way, sound near the first pickup hole 214 can pass through the first conduit 2711 and the first vent 281 to reach the vicinity of the pickup surface of the first feedforward microphone 273 and be picked up by the first feedforward microphone 273.

[0173] In some embodiments, when the second circuit board 280 is disposed between the second feedforward microphone 274 and the second bracket 272, the second circuit board 280 may be provided with a second vent (not shown). The second vent connects to the second conduit 2721.

[0174] In some embodiments, the second earphone housing 200 may further include a third waterproof and breathable membrane 275. The third waterproof and breathable membrane 275 may be disposed between the first bracket 271 and the first feedforward microphone 273. The third waterproof and breathable membrane 275 may cover the first conduit 2711. Exemplarily, the third waterproof and breathable membrane 275 may be disposed between the first bracket 271 and the second circuit board 280. It is understood that by providing the third waterproof and breathable membrane 275, while not affecting the sound pickup of the first feedforward microphone 273, external dust and moisture can be prevented from entering the second earphone housing 200 through the first conduit 2711, thus avoiding interference with the operation of the internal components of the second earphone housing 200.

[0175] In some embodiments, the second earphone body 200 may also include a fourth waterproof and breathable membrane (not shown), which may be fixedly connected to the second bracket 272 and cover the second pipe 2721.

[0176] like Figure 13 As shown, the first conduit 2711 can be curved, that is, the first conduit 2711 can include a curved conduit. Exemplarily, the first conduit 2711 can include a first segment 2712 and a second segment 2713, the first segment 2712 connecting to the second segment 2713, and the first segment 2712 connected to the end of the second segment 2713 furthest from the first feedforward microphone 273. The central axis L3 of the first segment 2712 ( Figure 13 (Illustrated by dashed lines) and the central axis L4 of the second segment 2713 ( Figure 13 (Illustrated by dotted lines) It is set at an angle. The first pipe 2711 can be in an "L" shape or a "V" shape.

[0177] It is understandable that, compared to a straight pipe, a curved first pipe 2711 can have a wind noise reduction effect. When airflow near the first pickup hole 214 passes through the first pipe 2711, the curved pipe can buffer the airflow, resulting in less wind noise in the sound picked up by the first feedforward microphone 273. In other embodiments, the first pipe 2711 can also be N-shaped, S-shaped, Z-shaped, or C-shaped, etc. It is understood that the shape of the first pipe 2711 can be adjusted according to actual conditions, and the first pipe 2711 can include multiple curved pipes or only one curved pipe.

[0178] In some embodiments, the diameter of the first conduit 2711 may be greater than 0.6 mm. For example, the diameter of the first conduit 2711 may be 0.6 mm, 0.7 mm, 0.9 mm, or 1.2 mm.

[0179] In some embodiments, the second conduit 2721 may also be curved. The arrangement of the second conduit 2721 can refer to the arrangement of the first conduit 2711, and will not be repeated here.

[0180] In other embodiments, the first pickup hole 214 and the second pickup hole 215 may also be located on the side of the long axis L1 away from the first connecting hole 218.

[0181] In other embodiments, the third housing 210 may also be provided with a third pickup hole (not shown) and a fourth pickup hole (not shown). The third and fourth pickup holes are located on the long axis L1 of the second earphone body 200 and are symmetrical about the symmetry plane O-O of the earphone 1000. In this case, the first bracket 271 may also include a third conduit (not shown), one end of which is opposite to the third pickup hole, and the other end of which is connected to the first conduit 2711. The second bracket 272 may also include a fourth conduit (not shown), one end of which is opposite to the fourth pickup hole, and the other end of which is connected to the second conduit 2721. In this way, the first feedforward microphone 273 can simultaneously pick up ambient sounds near the first pickup hole 214 and the third pickup hole, and the second feedforward microphone 274 can simultaneously pick up sounds near the second pickup hole 215 and the fourth pickup hole.

[0182] In other embodiments, the number of feedforward microphones can be one. The number of pickup holes can also be one. The feedforward microphone can be located on the connecting arm 300, and the pickup hole can also be located on the connecting arm 300. In this way, it is not necessary to distinguish between the left and right ears when wearing the headphones 1000, and the number of feedforward microphones can be reduced by one, which can reduce the size and weight of the headphones 1000, which is beneficial to the miniaturization and lightness of the headphones 1000.

[0183] In other embodiments, the second earpiece 200 may further include a first microphone (not shown) and a second microphone (not shown) for use in calls. The first and second microphones can be used to pick up the user's voice. The first microphone picks up the user's voice through a first pickup hole 214. The second microphone picks up the user's voice through a second pickup hole 215. Exemplarily, the configuration of the first microphone can refer to the configuration of the first feedforward microphone. The configuration of the second microphone can refer to the configuration of the second feedforward microphone.

[0184] like Figure 14 As shown, the charging terminal 291 may include a first electrode 2911 and a second electrode 2912. Both the first electrode 2911 and the second electrode 2912 are electrically connected to the battery 240. Both the first electrode 2911 and the second electrode 2912 are embedded in the outer shell 209 of the second earphone body 200, with one end exposed relative to the outer surface of the outer shell 209. The first electrode 2911, the second electrode 2912, the first pickup hole 214, and the second pickup hole 215 are spaced apart.

[0185] For example, the first electrode 2911 can be fixedly connected to the third housing 210. One end of the first electrode 2911 can be exposed at the first charging port 216 relative to the outer surface of the housing 209 of the second earphone body 200. The second electrode 2912 can be fixedly connected to the third housing 210. One end of the second electrode 2912 can be exposed at the second charging port 217 relative to the outer surface of the housing 209 of the second earphone body 200.

[0186] In other embodiments, the first charging port 216 and the second charging port 217 may also be provided on the fourth housing 220, and the first electrode 2911 and the second electrode 2912 may also be fixedly connected to the fourth housing 220. This application does not impose any restrictions.

[0187] When the user charges the earphone 1000, the first electrode 2911 and the second electrode 2912 act as the positive and negative electrodes, respectively, for electrically connecting to the positive and negative electrodes of the battery 240. This application does not fix the correspondence between the first electrode 2911 and the second electrode 2912 and the positive and negative electrodes. It can be understood that the first electrode 2911 can be the positive electrode and the second electrode 2912 the negative electrode; conversely, the first electrode 2911 can be the negative electrode and the second electrode 2912 the positive electrode.

[0188] The first electrode 2911 and the second electrode 2912 can be electrically connected to the second circuit board 280. The battery 240 can be electrically connected to the second circuit board 280. The second circuit board 280 can also be used for electrical signal transmission between the first electrode 2911, the second electrode 2912 and the battery 240.

[0189] In some embodiments, the first electrode 2911 and the second electrode 2912 can be symmetrical about the OO plane. This facilitates a symmetrical weight distribution of the second earphone body 200 about the OO plane.

[0190] like Figure 14 As shown, the second earphone body 200 may further include a second magnet 299. The second magnet 299 may be disposed within the second space 201 of the second earphone body 200 and fixedly connected to the third housing 210. The second magnet 299 may be used to assist the earphone 1000 in quick positioning when the earphone 1000 is charging in the paired earphone 1000 case. Exemplarily, the second magnet 299 may be located on the side of the battery 240 away from the first connection hole 218.

[0191] In some implementations, there may be two second magnets 299, and the two second magnets 299 may be symmetrical about the symmetry plane 0-0 of the earphone 1000.

[0192] In other embodiments, the second magnet 299 may also be fixedly connected to the fourth housing 220.

[0193] In other embodiments, the number of second magnets 299 may be one, or three or more.

[0194] Figure 15 yes Figure 5 The diagram shows a structural schematic of one embodiment of the motherboard bracket 250.

[0195] like Figure 15 As shown, the motherboard bracket 250 may include a main body 251, an extension 252, a first limiting part 253, and a second limiting part 254. The main body 251 may be annular. The main body 251 has a first end face 2511, a second end face 2512, an inner side face 2513, and an outer side face 2514. The first end face 2511 and the second end face 2512 are disposed opposite to each other, and the inner side face 2513 and the outer side face 2514 are disposed opposite to each other. The inner side face 2513 is connected between the first end face 2511 and the second end face 2512. The inner side face 2513 encloses a receiving space 255. The outer side face 2514 is connected between the first end face 2511 and the second end face 2512. The extension 252 is connected to the outer side face 2514 and is located at the end of the outer side face 2514 closest to the first end face 2511. The first limiting part 253 and the second limiting part 254 are both connected to the inner side surface 2513 of the main body part 251 and are spaced apart. The first limiting part 253 and the second limiting part 254 divide the accommodating space 255 into a first accommodating space 2516, a second accommodating space 2517 and a third accommodating space 2518.

[0196] In some embodiments, the motherboard bracket 250 may further include a second positioning post 256. The second positioning post 256 may be fixedly connected to the second end face 2512 of the main body 251. The number of second positioning posts 256 may be one or more. When there are multiple second positioning posts 256, they are spaced apart.

[0197] Figure 16 yes Figure 5 The diagram shows an assembly schematic of one embodiment of the circuit board 261 and motherboard bracket 250 shown. Figure 17 yes Figure 16 The diagram shown is a structural schematic from another angle.

[0198] like Figure 16 and Figure 17 As shown, the motherboard 260 may include a circuit board 261 and electronic devices 262 disposed on the circuit board 261. The circuit board 261 can serve as a carrier for the electronic components. Exemplarily, the electronic components may be active devices such as chips, or passive devices such as capacitors, inductors, and resistors. It is understood that the electronic devices 262 can be selected and combined in different types and quantities to enable the motherboard 260 to have specific functions. Those skilled in the art can select the type and quantity of electronic components according to actual needs, and this application does not limit this selection.

[0199] Circuit board 261 can be fixedly connected to the second end face 2512 of motherboard bracket 250. Exemplarily, circuit board 261 may include a first face 2611 and a second face 2612 disposed opposite to each other. The first face 2611 is fixedly connected to the second end face 2512 of motherboard bracket 250. Electronic device 262 can be disposed on the first face 2611 or the second face 2612. That is, both sides of circuit board 261 can be used to dispose of electronic device 262, as can be determined by those skilled in the art.

[0200] In some embodiments, electronic device 262 may include an accelerometer 2621 (ACC). Accelerometer 2621 may be fixedly connected to the second surface 2612 of circuit board 261. Accelerometer 2621 can be used to measure the acceleration of the second earphone body 200, thereby determining the spatial position of the second earphone body 200. That is, the spatial motion state of the second earphone body 200 can be determined by accelerometer 2621.

[0201] In some embodiments, electronic device 262 may further include electrical connector 2622. Electrical connector 2622 can be used to establish an electrical connection between circuit board 261 and other signal transmission structures. For example, motherboard 260 may include a board-to-board connector (BTB) fixedly connected to the second side 2612 of circuit board 261.

[0202] In some embodiments, electronic device 262 may further include a main chip 2623. The main chip 2623 can be used to control the functions of the headphones 1000. For example, the main chip 2623 may be fixedly connected to the second side 2612 of the circuit board 261.

[0203] In some embodiments, circuit board 261 may be provided with clearance holes 2613 (e.g. Figure 16 When the circuit board 261 can be fixedly connected to the motherboard bracket 250, the second positioning post 256 can be located within the clearance hole 2613. It is understood that by setting the clearance hole 2613 and the second positioning post 256, the clearance hole 2613 and the second positioning post 256 cooperate with each other, which can help to quickly position the circuit board 261 during assembly, and at the same time, prevent the circuit board 261 from shifting in subsequent assembly processes.

[0204] Figure 18 yes Figure 5 The diagram shows a partial structural assembly of the second earphone body 200. Figure 19 yes Figure 18 The second earphone body 200 shown is a cross-sectional view of one embodiment at section line EE.

[0205] like Figure 18 and Figure 19 As shown, the motherboard bracket 250 can be fixedly connected to the inner surface 212 of the third housing 210. The circuit board 261 of the motherboard 260 is fixedly connected to the motherboard bracket 250. In this way, the motherboard bracket 250 can be used to fix the motherboard 260.

[0206] Exemplarily, the third housing 210 may have a boss 219. The boss 219 may be formed by protrusion from the inner surface 212 of the third housing 210. The extension 252 of the motherboard bracket 250 may be fixedly connected to the boss 219. Along the direction from the third housing 210 to the fourth housing 220, the projection of the extension 252 on the boss 219 at least partially coincides with the boss 219. The motherboard bracket 250 may be used to support the motherboard 260 and may also be used to prevent the motherboard 260 from shaking under external force, which would interfere with the operation of the motherboard 260 and with other devices inside the second earphone body 200.

[0207] In some embodiments, the motherboard 260 and the battery 240 are stacked along the Y-axis. For example, the motherboard 260 may be located on the side of the battery 240 away from the third housing 210.

[0208] In some embodiments, the battery 240 may be partially located within the second receiving space 2517. A portion of the main body 251, the first limiting portion 253, and the second limiting portion 254 of the motherboard bracket 250 are arranged around the battery 240. This further limits the battery 240, reducing the risk of displacement of the battery 240 in the XZ direction.

[0209] In some implementations, the antenna module 230, battery 240, and motherboard 260 can be stacked along the Y-axis.

[0210] The second circuit board 280 is connected to and electrically connected to the motherboard 260. For example, the second circuit board 280 is connected to electrical connector 2622 on the motherboard 260. Figure 16 (Illustrated in the diagram is the electrical connector 2622), thereby achieving an electrical connection with the motherboard 260. It can be understood that the battery 240 can be electrically connected to the motherboard 260 via a flexible circuit board or conductive traces. When the user charges the headset 1000, current sequentially passes through the first electrode 2911 and the second electrode 2912, the second circuit board 280, the motherboard 250, and finally enters the battery 240, achieving energy storage. The second circuit board 280 can also be used to achieve an electrical connection between the first feedforward microphone 273 and the second feedforward microphone 274 and the motherboard 250.

[0211] Figure 20 yes Figure 18 The second earphone body 200 shown is a cross-sectional view of one embodiment at section line FF.

[0212] like Figure 20 As shown, along the Y-axis, there is a gap between the projection of the motherboard 260 onto the plane containing the motherboard bracket 250 and the motherboard bracket 250. That is, a first gap 266 can be formed between the motherboard bracket 250 and the motherboard 260. The first gap 266 can be used for routing traces. For example, the feed trace 2314 of the antenna module 230 can connect to the motherboard 260 through the gap between the third housing 210 and the battery 240 and the first gap 266, thereby enabling power to the antenna module 230. It is understood that by setting the first gap 266, the position of the feed trace 2314 of the antenna module 230 can be fixed, thereby improving the reliability of the electrical connection between the antenna module 230 and the motherboard 260.

[0213] In other embodiments, a second gap (not shown) may be formed between the motherboard bracket 250 and the motherboard 260, and the second circuit board 280 may also pass through the second gap and be electrically connected to the motherboard 260.

[0214] Figure 21 yes Figure 5 The diagram shows a partial structural assembly of the second earphone body 200. Figure 22 yes Figure 21 The diagram shows a cross-sectional view of one embodiment of the structure at section line GG.

[0215] like Figure 21 and Figure 22 As shown, the second capacitive sensor 290 can be located on the side of the motherboard 260 away from the battery 240. The second capacitive sensor 290 can be spaced apart from the first feedforward microphone 273 and the second feedforward microphone 274. The second capacitive sensor 290 can be connected to the motherboard 260 and is electrically connected to the motherboard 260. For example, the second capacitive sensor 290 can be electrically connected to the motherboard 260 via a flexible circuit board. In some embodiments, the second capacitive sensor 290 can also be called a proximity sensor and can be used to detect whether the user is wearing headphones 1000. When the second capacitive sensor 290 is close to the user's skin, the capacitance of the second capacitive sensor 290 changes, generating an electrical signal. The distance between the second capacitive sensor 290 and the user can be determined based on the change in the electrical signal.

[0216] In some implementations, the antenna module 230, battery 240, motherboard 260, and second capacitive sensor 290 can be stacked along the Y-axis.

[0217] Figure 23 yes Figure 1 The diagram shows the structure of the earphone 1000 from another angle.

[0218] like Figure 23 As shown, the first pickup hole 214 and the second pickup hole 215 can be arranged at intervals along the first direction and are located on both sides of the first connecting hole 218. The first connecting hole 218 can be used to allow the end of the connecting arm 300 to extend into the interior of the second earphone body 200. That is, the first pickup hole 214 and the second pickup hole 215 can be located on both sides of the connecting arm 300. The first pickup hole 214 and the second pickup hole 215 are located on the side of the long axis L1 closer to the connecting arm 300.

[0219] This application describes a headphone 1000 in detail with reference to the accompanying drawings. The headphone 1000 includes a first headphone body 100, a connecting arm 300, and a second headphone body 200. The connecting arm 300 connects the first headphone body 100 and the second headphone body 200. The first headphone body 100 is used for sound generation. The second headphone body 200 is used for noise pickup. The second headphone body 200 includes a housing and a first feedforward microphone 273. The first feedforward microphone 273 is disposed inside the housing of the second headphone body 200. The housing 209 of the second headphone body 200 is provided with a first pickup hole 214, through which the first feedforward microphone 273 picks up external noise from the second headphone body 200. The outer shell 209 of the second earphone body 200 has a length in the first direction that is greater than its length in the second direction. The second earphone body 200 includes a long axis, which is the line connecting the two farthest endpoints of the outer shell 209 of the second earphone body 200 in the first direction. The first pickup hole 214 is located on the side of the long axis near the connecting arm 300. The second direction is different from the first direction. The second direction is the direction from which the end of the connecting arm 300 that connects to the second earphone body 200 points to the center of the second earphone body 200.

[0220] Understandably, compared to the solution where the long axis L1 passes through the first pickup hole 214, placing the first pickup hole 214 on the side of the long axis L1 closer to the connecting arm 300 can reduce the risk of sweat dripping into the first pickup hole 214 or the second pickup hole 215 when the user wears the headphones 1000, thus avoiding the first pickup hole 214 or the second pickup hole 215 being blocked by sweat and affecting the active noise cancellation effect.

[0221] The following section will describe several implementation methods of the first earphone body 100 in detail with reference to the accompanying drawings. Figure 24 yes Figure 1 The diagram shows a structural schematic of one embodiment of the first earphone body 100 shown. Figure 25 yes Figure 24 The diagram shows a partial structural exploded view of the first earphone body 100 shown.

[0222] like Figure 24 and Figure 25As shown, the first earphone body 100 may include a housing 109, a speaker 30, a feedback microphone 40 (FB mic), a bone sensor 50 (Vibrate pickup sensor, VPU), a first capacitive sensor 60 (Captivity sensor, CAP), a first circuit board 70, and a wiring harness bracket 80. The speaker 30, feedback microphone 40 (FB mic), bone sensor 50 (Vibrate pickup sensor, VPU), first capacitive sensor 60 (Captivity sensor, CAP), first circuit board 70, and wiring harness bracket 80 may all be disposed inside the housing 109 of the first earphone body 100.

[0223] For example, the outer shell 109 of the first earphone body 100 may include a first outer shell 10 and a second outer shell 20. The first outer shell 10 is connected to the second outer shell 20, enclosing a first space 101. The speaker 30, feedback microphone 40, bone sensor 50, first capacitive sensor 60, first circuit board 70 and wiring harness bracket 80 may all be disposed within the first space 101.

[0224] In some embodiments, the outer shell 109 of the first earphone body 100 may be spherical.

[0225] In some embodiments, the diameter of the outer shell 109 of the first earphone body 100 is in the range of 12 mm to 15 mm. For example, the diameter of the spherical outer surface can be 12.3 mm, 13 mm, or 14.3 mm.

[0226] Figure 26 yes Figure 24 The first earphone body 100 shown is a partial cross-sectional view of one embodiment at section line HH.

[0227] like Figure 26 As shown, the first outer casing 10 may have an outer surface 11, an inner surface 12, and a first end face 13. The outer surface 11 and the inner surface 12 are arranged opposite to each other, with the inner surface 12 facing the first space 101. The first end face 13 connects the outer surface 11 and the inner surface 12. The second outer casing 20 may have an outer surface 21, an inner surface 22, and a second end face 23. The outer surface 21 and the inner surface 22 are arranged opposite to each other, with the inner surface 22 facing the first space 101. The second end face 23 connects the outer surface 21 and the inner surface 22.

[0228] When the first outer shell 10 is connected to the second outer shell 20, the first end face 13 of the first outer shell 10 is connected to the second end face 23 of the second outer shell 20. The outer surface 11 of the first outer shell 10 and the outer surface 21 of the second outer shell 20 can form the outer surface of the outer shell 109 of the first earphone body 100. The inner surface 12 of the first outer shell 10 and the inner surface 22 of the second outer shell 20 form the inner surface of the outer shell 109 of the first earphone body 100. The inner surface 12 of the first outer shell 10 and the inner surface 22 of the second outer shell 20 enclose the first space 101.

[0229] In some embodiments, the outer surface 11 of the first housing 10 is hemispherical, and the outer surface 21 of the second housing 20 is hemispherical. The outer surface 11 of the first housing 10 and the outer surface 21 of the second housing 20 have the same radius.

[0230] In some embodiments, the first housing 10 and the second housing 20 can be fixedly connected by means of adhesive or snap-fit.

[0231] like Figure 26 As shown, the speaker 30 can be fixedly connected to the inner surface 12 of the first housing 10. The speaker 30 divides the first space 101 enclosed by the first housing 10 and the second housing 20 into a first sub-cavity 102 and a second sub-cavity 103. The sound-emitting surface 31 of the speaker 30 faces the first sub-cavity 102. The first housing 10 may be provided with a first through hole 14, which connects the external space of the first earphone body 100 (i.e., the environment in which the first earphone body 100 is located) and the first sub-cavity 102. The first through hole 14 is used to transmit the sound emitted by the speaker 30 out of the first earphone body 100. When the user wears the earphone 1000, the first through hole 14 is located in the user's concha cavity, and the sound emitted by the speaker 30 can enter the user's ear through the first through hole 14 and be received by the user. Exemplarily, the first through hole 14 can be arranged opposite to the speaker 30.

[0232] In some embodiments, the first housing 10 may have a first boss 15. The first boss 15 may be located in the first sub-cavity 102. The first boss 15 may be formed by protruding from the inner surface 12 of the first housing 10 toward the first sub-cavity 102, and the surface of the first boss 15 is a part of the inner surface 12 of the first housing 10. The speaker 30 may be fixedly connected to the first boss 15. Exemplarily, the first boss 15 may be annular, and the first boss 15 surrounds and connects to the speaker 30. In this way, the speaker 30 can independently separate the first sub-cavity 102 and the second sub-cavity 103, that is, the first sub-cavity 102 and the second sub-cavity 103 may be spaced apart. The first sub-cavity 102 may be used as the front acoustic cavity of the speaker 30, and the speaker 30 is used to transmit and interact with the outside of the first earphone body 100 through the first through hole 14. The second sub-cavity 103 may be used as the rear acoustic cavity of the speaker 30.

[0233] The second outer casing 20 may be provided with a pressure relief hole 24. The pressure relief hole 24 is used to connect the second sub-cavity 103 and the external space of the first earphone body 100 (that is, the environment in which the first earphone body 100 is located) to balance the air pressure in the second sub-cavity 103. For example, the number of pressure relief holes 24 may be two.

[0234] In some embodiments, the positions of the two pressure relief holes 24 are symmetrical about the OO plane. It is understood that symmetrical arrangement of the two pressure relief holes 24 eliminates the need for users to distinguish between left and right ears when using the earphones 1000. Simultaneously, the symmetrical distribution of the two pressure relief holes 24 ensures that when sweat blocks one pressure relief hole 24 during earphone use, the other pressure relief hole 24 remains operational to balance the air pressure within the second sub-cavity 103.

[0235] In some embodiments, the second housing 20 may be provided with a second connecting hole 26. The second connecting hole 26 connects the outer surface 21 of the second housing 20 and the inner surface 22 of the second housing 20. For example... Figure 2 As shown, the second connection hole 26 can be used to allow one end of the connecting arm 300 to extend into the interior of the first earphone body 100.

[0236] In some embodiments, two pressure relief holes 24 are spaced apart along a first direction and located on both sides of the second connecting hole 26.

[0237] In some embodiments, the line connecting the first through hole 14 and the pressure relief hole 24 is called the first connecting line, and the line connecting the second connecting hole 26 and the first through hole 14 is called the second connecting line. The first connecting line and the second connecting line form an angle. When the speaker 30 emits sound, the sound leakage on the first connecting line is greater than the sound leakage on the second connecting line. The first through hole 14 can form a dipole sound field with the pressure relief hole 24. For example, when the user wears the headphones 1000, the second connecting hole 26 faces the user's side. Placing the two pressure relief holes 24 on both sides of the second connecting hole 26 can reduce sound leakage from the user's side.

[0238] like Figure 26 As shown, the speaker 30 can be fixed at the cross-section with the maximum diameter of the first housing 10. In other embodiments, the speaker 30 can also be fixedly connected to the inner surface 22 of the second housing 20, and fixedly connected at the cross-section with the maximum diameter of the second housing 20.

[0239] In some implementations, the speaker 30 is a dual-magnetic diaphragm speaker. Compared to traditional dynamic and balanced armature speakers, the dual-magnetic diaphragm speaker 30 can effectively improve the low-frequency performance under open sound field function and make up for the disadvantage that the sound outlet (i.e., the first through hole 14) of the headphone 1000 is a certain distance away from the ear canal.

[0240] In some embodiments, the first earphone body 100 may further include a dustproof mesh 90. The dustproof mesh 90 is connected to the first outer shell 10 and disposed within the first through hole 14. The dustproof mesh 90 covers the first through hole 14. It is understood that by providing the dustproof mesh 90, impurities outside the earphone 1000 can be prevented from entering the first sub-cavity 102 of the first earphone body 100 through the first through hole 14, thus preventing interference with the operation of the speaker 30. In some embodiments, the dustproof mesh 90 can be made of metal, thus providing better strength.

[0241] For example, the dustproof net 90 may include a body portion 91 and two connecting portions 92. The connecting portions 92 are connected to the body portion 91. The two connecting portions 92 are spaced apart. The first housing 10 has a second through hole 16 and a third through hole 17 spaced apart. The second through hole 16 and the third through hole 17 surround the periphery of the first through hole 14. The two connecting portions 92 are respectively connected to the second through hole 16 and the third through hole 17. The body portion 91 has a mesh structure and covers the first through hole 14.

[0242] In some embodiments, the first earphone body 100 may further include a first waterproof and breathable membrane 93. The first waterproof and breathable membrane 93 may be connected to the first outer shell 10 and cover the first through hole 14. Exemplarily, the first waterproof and breathable membrane 93 may be disposed between the body portion 91 of the dustproof mesh 90 and the first outer shell 10. It is understood that by providing the first waterproof and breathable membrane 93, communication between the first sub-cavity 102 and the external space of the first earphone body 100 is achieved, the air pressure inside the first sub-cavity 102 is balanced, and external dust and moisture are prevented from entering the first sub-cavity 102 through the first through hole 14, thus avoiding affecting the operation of the speaker 30.

[0243] In some embodiments, the area of ​​the first through hole 14 is 5 mm. 2 Up to 8mm 2 Within a certain range. For example, the area of ​​the first through hole can be 5 mm². 2 6.5mm 2 Or 8mm 2 .

[0244] In some embodiments, the first earphone body 100 may further include a second waterproof and breathable membrane 94. The second waterproof and breathable membrane 94 is connected to the inner surface 22 of the second outer shell 20 and covers the pressure relief hole 24. It is understood that by providing the second waterproof and breathable membrane 94, communication between the second sub-cavity 103 and the external space of the first earphone body 100 is achieved, the air pressure inside the second sub-cavity 103 is balanced, and external dust and moisture are prevented from entering the second sub-cavity 103 through the first through hole 14, thus avoiding affecting the operation of the internal components of the first earphone body 100.

[0245] In some embodiments, there are two pressure relief holes 24 and two second waterproof and breathable membranes 94. The two pressure relief holes 24 and the two second waterproof and breathable membranes 94 are provided in a one-to-one correspondence.

[0246] In some embodiments, the area of ​​the pressure relief hole 24 is smaller than the area of ​​the first through hole 14. When there are multiple pressure relief holes 24, the area of ​​the pressure relief hole 24 is the sum of the areas of the multiple pressure relief holes 24.

[0247] In some embodiments, the area of ​​the pressure relief hole 24 is 1 mm². 2 Up to 3mm 2 Within a certain range. For example, the area of ​​the pressure relief hole 24 can be 1 mm². 2 2mm 2 or 3mm 2 .

[0248] Figure 27 yes Figure 24 The first earphone body 100 shown is a partial cross-sectional view of one embodiment at section line II.

[0249] like Figure 27 As shown, the feedback microphone 40 can be located near the sound-emitting position of the speaker 30. For example, the feedback microphone 40 can be located within the first sub-cavity 102. The feedback microphone 40 can also be located around the first through-hole 14. When the user wears the headphones 1000, the feedback microphone 40 can be located within the user's concha, near the ear canal. Sound near the user's ear canal can be picked up by the feedback microphone 40 through the first through-hole 14. It is understood that by setting the feedback microphone 40 and placing it near the speaker 30, the feedback microphone 40 can be used to pick up noise entering the user's ear canal. The sound from the speaker 30 side is then fed back to the chip to output an inverted sound wave to cancel out the noise in the ear, resulting in a better user experience.

[0250] In some embodiments, the first earphone body 100 may further include a first magnet 95. Exemplarily, the first magnet 95 may be located within the first sub-cavity 102 and fixedly connected to the inner wall of the first outer casing 10. When the earphone 1000 is stored in the earphone case, the first magnet 95 can engage with a magnet inside the earphone case to generate an attractive force, fixing the position of the first earphone body 100 within the earphone case.

[0251] In some embodiments, the first magnet 95 is an elongated strip with an arc. This allows the first magnet to fit more closely to the hemispherical first outer shell 10, and the arrangement of components within the first sub-cavity 102 can be more compact. In other embodiments, the first magnet 95 can be circular or other shapes.

[0252] Figure 28 yes Figure 25 The diagram shows a structural schematic of one embodiment of the wire harness bracket 80 shown. Figure 29 yes Figure 28 The diagram shows the structure of the wire harness bracket 80 from another angle.

[0253] like Figure 28 and Figure 29 As shown, the wire harness bracket 80 may include a bracket body 81 and multiple baffles 82. The bracket body 81 includes a top surface 811, a bottom surface 812, and a peripheral side surface 813. The top surface 811 and the bottom surface 812 are arranged opposite to each other, and the peripheral side surface 813 connects the top surface 811 and the bottom surface 812. The wire harness bracket 80 is provided with a wire threading channel 83, a first vent pipe 84, and a second vent pipe 85. The wire threading channel 83, the first vent pipe 84, and the second vent pipe 85 are arranged at intervals and are not interconnected. Among them, the wire threading channel 83 connects the top surface 811 and the bottom surface 812. The first vent pipe 84 connects the bottom surface 812 and the peripheral side surface 813. The second vent pipe 85 connects the bottom surface 812 and the peripheral side surface 813. The top surface 811 of the bracket body 81 is the top surface of the wire harness bracket 80. The peripheral side surface 813 of the bracket body 81 is the peripheral side surface of the wire harness bracket 80.

[0254] Multiple baffles 82 are fixedly connected to the bottom surface 812 of the bracket body 81. The multiple baffles 82 surround the wire threading channel 83 and are spaced apart from each other. It can be understood that the number of baffles 82 can be adjusted according to the actual situation.

[0255] In some embodiments, the wire harness support 80 may be provided with a receiving groove 86. The receiving groove 86 can be used to place the bone sensor 50. For example, the receiving groove 86 may have openings formed on the bottom surface 812 and the peripheral surface 813 of the support body 81. The receiving groove 86 may be arranged at intervals with the wire passage 83, the first ventilator 84, and the second ventilator 85.

[0256] Figure 30 yes Figure 24 The first earphone body 100 shown is a partial cross-sectional view of one embodiment at section line HH.

[0257] like Figure 30As shown, the wire harness bracket 80 is fixedly connected to the inner surface 22 of the second housing 20. Exemplarily, the peripheral side surface 813 of the wire harness bracket 80 is connected to the inner surface 22 of the second housing 20. It is understood that the peripheral side surface 813 of the wire harness bracket 80 can be designed according to the shape of the inner surface 22 of the second housing 20, such that the shape of the peripheral side surface 813 approximately matches the shape of the inner surface 22 of the second housing 20. For example, the wire harness bracket 80 can be approximately frustum-shaped. This increases the connection area between the wire harness bracket 80 and the second housing 20, strengthening the connection. In some embodiments, the wire harness bracket 80 can be fixedly connected to the second housing 20 by adhesive bonding.

[0258] The bottom surface 812 of the bracket body 81 faces the speaker 30. The first vent pipe 84 and the second vent pipe 85 can be respectively arranged opposite to and connected to the two pressure relief holes 24. In this way, the second sub-cavity 103 can be connected to the outside through the first vent pipe 84, the second vent pipe 85 and the two pressure relief holes 24 to achieve air pressure balance in the second sub-cavity 103.

[0259] In some embodiments, the second connection hole 26 and the wire passage 83 of the wire harness bracket 80 are arranged opposite each other.

[0260] Figure 31 yes Figure 25 A schematic diagram of an embodiment of the bone sensor 50 and wire harness support 80 shown. Figure 32 yes Figure 24 The first earphone body 100 shown is a partial cross-sectional view of one embodiment at section line II.

[0261] like Figure 31 and Figure 32 As shown, the bone sensor 50 can be fixedly connected to the receiving groove 86 of the wire harness support 80. For example, the receiving groove 86 may have openings formed on the bottom surface 812 and the peripheral surface 813 of the support body 81. The bone sensor 50 can be fixedly connected to the receiving groove 86 of the wire harness support 80 and the space enclosed by the second housing 20.

[0262] The second earphone body 200 may further include a buffer 99. The buffer 99 can fill the gap between the second housing 20, the bone sensor 50, and the wiring harness support 80. In this way, the buffer 99 helps to fix the position of the bone sensor 50 and acts as a buffer when subjected to external impact. For example, the buffer 99 can be an adhesive. Thus, while providing a buffering effect, the buffer 99 can also strengthen the connection between the second housing 20 and the wiring harness support 80, improving reliability.

[0263] A first capacitive sensor 60 is disposed within the first space 101. Exemplarily, the first capacitive sensor 60 can be connected to the inner surface 22 of the second housing 20. It is understood that, in some embodiments, the first capacitive sensor 60 may also be referred to as a proximity sensor, and can be used to detect whether a user is wearing headphones 1000. When the first capacitive sensor 60 is close to the user's skin, the capacitance of the first capacitive sensor 60 changes, generating an electrical signal. The distance between the first capacitive sensor 60 and the user can be determined based on the change in the electrical signal.

[0264] Figure 33 yes Figure 25 The diagram shows a structural schematic of one embodiment of the first circuit board 70 shown.

[0265] like Figure 33 As shown, the first circuit board 70 may include a first part 71, a second part 72, a third part 73, a fourth part 74, a fifth part 75, and a sixth part 76. The second part 72 is connected between the first part 71 and the third part 73. The third part 73 is connected between the second part 72 and the fourth part 74. The fourth part 74 is connected between the third part 73 and the fifth part 75. The sixth part 76 is connected to the fourth part 74.

[0266] In some embodiments, the first part 71, the second part 72, the third part 73, the fourth part 74, the fifth part 75, and the sixth part 76 can be a single integrated structure. For example, the first circuit board 70 can be a flexible circuit board. This allows the first circuit board 70 to be cut into any shape according to the devices and locations to be connected, and then the corresponding parts can be bent into a preset shape after being connected to the corresponding devices. Compared to solutions that achieve electrical connections through cables or other structures, flexible circuit boards are easier to assemble and offer better reliability in electrical connections. In other embodiments, the first part 71, the second part 72, the third part 73, the fourth part 74, the fifth part 75, and the sixth part 76 can also be connected by wires.

[0267] Figure 34 yes Figure 24 A partial structural schematic diagram of one embodiment of the first earphone body 100 shown. Figure 35 yes Figure 34 The diagram shown is a structural schematic from another angle.

[0268] like Figure 34 and Figure 35As shown, the feedback microphone 40 is connected to and electrically connected to the first portion 71 of the first circuit board 70. The speaker 30 is connected to and electrically connected to the third portion 73 of the first circuit board 70. The fourth portion 74 can be fixed to the bottom surface of the wiring harness bracket 80. The first capacitive sensor 60 is connected to and electrically connected to the fifth portion 75 of the first circuit board 70. The bone sensor 50 is connected to and electrically connected to the sixth portion 76 of the first circuit board 70.

[0269] Part 4, 74, can be used to connect signal lines to transmit signals from the speaker 30, wiring harness bracket 80, bone sensor 50, first capacitive sensor 60, and feedback microphone 40 to the second earphone body 200.

[0270] Figure 36 yes Figure 27 The diagram shows an enlarged view of one embodiment of the structure at point J.

[0271] like Figure 36 As shown, the first housing 10 of the first circuit board 70 can be connected to the inner surface 12 of the first housing 10. The feedback microphone 40 is connected to the side surface of the first portion 71 away from the first housing 10. Along the X-axis direction, the first portion 71 can be disposed opposite to the first through hole 14. For example, the first portion 71 can be provided with a through hole 711. Along the X-axis direction, the through hole 711 can be disposed opposite to and communicate with the first through hole 14.

[0272] In some embodiments, the first outer casing 10 may be provided with a positioning post 19. The positioning post 19 may be disposed within the first sub-cavity 102. The positioning post 19 may be used to assist in the rapid positioning of the first part 71 during the installation of the first part 71 onto the first outer casing 10. The first part 71 may be provided with a corresponding positioning hole 712, and the positioning post 19 is at least partially located within the positioning hole 712. The positioning hole 712 and the through hole 711 may be connected or spaced apart.

[0273] In some embodiments, the first circuit board 70 may further include a first reinforcing plate 77, which is connected to the surface of the first portion 71 remote from the feedback microphone 40. Exemplarily, the feedback microphone 40 is connected to the surface of the first portion 71 remote from the first housing 10. The first reinforcing plate 77 connects the first portion 71 and the first housing 10. The first reinforcing plate 77 serves to reinforce the first portion 71. In other embodiments, reinforcing plates (not shown) may also be provided at other locations on the first circuit board 70 to increase the local strength of the first circuit board 70.

[0274] Figure 37 yes Figure 1 The image shows a cross-sectional view of one embodiment of the earphone 1000 at the OO plane.

[0275] like Figure 37 As shown, the bone sensor 50 of the first earphone body 100 is connected to the side of the wiring harness bracket 80 near the second earphone body 200. When a user wears the earphone 1000, the first earphone body 100 is held within the user's concha, and the second earphone body 200 is located outside the user's ear and on the side opposite to the first earphone body 100. That is, the user's ear is located between the first earphone body 100 and the second earphone body 200. The bone sensor 50 of the first earphone body 100 is connected to the side of the wiring harness bracket 80 near the second earphone body 200, allowing the bone sensor 50 to be closer to the user's ear, thus better picking up the vibrations of the user's speech and improving call noise reduction.

[0276] The third outer shell 210 of the second earphone body 200 is connected to the side of the fourth outer shell 220 away from the first earphone body 100. The antenna module 230 is fixedly connected to the third outer shell 210. The antenna module 230 can be located on the side of the second earphone body 200 away from the ear tissue. In this way, the antenna module 230 is less affected by interference when transmitting and receiving signals during operation.

[0277] The first capacitive sensor 60 can be located inside the housing 109 of the first earphone body 100. The second capacitive sensor 290 can be located inside the housing 209 of the second earphone body 200. The second earphone body 200 may also include a controller, which can be electrically connected to the first capacitive sensor 60 and the second capacitive sensor 290. For example, the controller can be located in the main chip 2623 (…). Figure 16 (See diagram above).

[0278] For example, the first capacitive sensor 60 is connected to the inner surface 22 of the second housing 20 and is located on the side of the inner surface 22 closer to the second earphone body 200. The second capacitive sensor 290 is connected to the inner surface 222 of the fourth housing 220. That is, the second capacitive sensor 290 is located on the side of the second earphone body 200 closer to the first earphone body 100. In this way, when the user wears the earphone 1000, the first capacitive sensor 60 and the second capacitive sensor 290 are closer to the user's ear, and the detection results of the first capacitive sensor 60 and the second capacitive sensor 290 are more accurate.

[0279] The earphone 1000 has a first capacitance sensor 60 on the first earphone body 100 and a second capacitance sensor 290 on the second earphone body 200. The first capacitance sensor 60 is used to acquire a first capacitance value in a first environment, and the second capacitance sensor 290 is used to acquire a second capacitance value in a second environment. The controller is used to determine whether the user is wearing the earphone 1000 based on the first and second capacitance values, that is, to detect whether the earphone 100 is being worn. For example, the wear detection can include the following three scenarios:

[0280] (1) When the user wears the headphones 1000 correctly, the first capacitive sensor 60 and the second capacitive sensor 290 can fit closely to the user's ear and form a specific capacitance value according to the pressure. At the same time, the first capacitive sensor 60 and the second capacitive sensor 290 are both close to the user's ear, and the difference between the first capacitance value generated by the first capacitive sensor 60 and the second capacitance value generated by the second capacitive sensor 290 is small.

[0281] For example, when a user correctly wears the earphone 1000, the first earphone body 100 can be held within the user's concha cavity, the first environment being the user's concha cavity. The second earphone body 200 is located outside the user's ear and on the side opposite to the first earphone body 100. The second environment is outside the user's ear and on the side opposite to the first earphone body 100.

[0282] (2) When the user is not wearing headphones 1000, and there is no obstruction between the first capacitance sensor 60 and the second capacitance sensor 290, the pressure on the first capacitance sensor 60 and the second capacitance sensor 290 is relatively small. The first capacitance sensor 60 generates a specific first capacitance value. The second capacitance sensor 290 generates a specific second capacitance value. The difference between the first capacitance value generated by the first capacitance sensor 60 and the second capacitance value generated by the second capacitance sensor 290 is small.

[0283] (3) When the user picks up the earphone 1000 or other obstacles and covers either the first capacitive sensor 60 or the second capacitive sensor 290, one of the first capacitive sensor 60 and the second capacitive sensor 290 is closer to the obstacle and the other is farther away. At this time, the difference between the capacitance value generated by the first capacitive sensor 60 and the capacitance value generated by the second capacitive sensor 290 is large.

[0284] It is understandable that the controller can determine whether the earphone 1000 is in scenario (1) or scenario (2) based on the absolute value of the capacitance generated by the first capacitance sensor 60 and the second capacitance sensor 290, and determine whether the earphone 1000 is in scenario (3) based on the difference (i.e., the relative value of the capacitance) of the capacitance generated by the first capacitance sensor 60 and the second capacitance sensor 290.

[0285] Understandably, compared to a solution that only sets the first capacitive sensor 60 or the second capacitive sensor 290, this application sets the first capacitive sensor 60 on the first earphone body 100 and the second capacitive sensor 290 on the second earphone body 200. This can reduce the risk of accidental touch and improve the accuracy of earphone 1000's wear detection.

[0286] like Figure 37As shown, along the length of the connecting arm 300, the connecting arm 300 has a first end and a second end spaced apart. The first end is connected to the first earphone body 100, and the second end is connected to the second earphone body 200. In some embodiments, the central axis direction of the first end and the central axis direction of the second end are set at an angle, with the angle ranging from 11.4° to 26°. For example, the angle can be 11.4°, 15°, 20°, or 26°. It is understood that compared to a scheme where the central axis direction of the first end and the central axis direction of the second end of the connecting arm 300 are parallel, setting the first end and the second end of the connecting arm 300 at a certain angle allows the relative position of the first earphone body 100 and the second earphone body 200 to better fit the user's ear tilt angle and contour curve when the user wears the earphone 1000. This effectively reduces the pressure of the first earphone body 100 and the second earphone body 200 on the earphone 1000, resulting in a better user experience.

[0287] The following section will describe several implementation methods of the connecting arm 300 in detail with reference to the accompanying drawings. Figure 38 yes Figure 1 The diagram shows a cross-sectional view of one embodiment of the connecting arm 300 at section line KK. Figure 39 yes Figure 38 The cross-sectional view of the connecting arm 300 shown at section line LL is a cross-sectional view of one embodiment. Figure 40 yes Figure 38 The cross-sectional view of the connecting arm 300 shown at section line MM is one embodiment.

[0288] like Figure 38 , Figure 39 and Figure 40 As shown, the connecting arm 300 may include a first connector 310, a second connector 320, a support 330, a wiring harness 340, and a tube 350. The tube 350 is sleeved on the support 330 and the wiring harness 340, serving to protect the support 330 and the wiring harness 340, and also to insulate the wiring harness 340. The support 330 is used to align the connecting arm 300 into a predetermined shape. The wiring harness 340 is used to transmit electrical signals.

[0289] For example, the tube body 350 is provided with a first channel 351 and a second channel 352 spaced apart. Both the first channel 351 and the second channel 352 are arranged along the length of the tube body 350. The tube body 350 has a first end and a second end disposed opposite to each other. A first connector 310 is connected to the first end, and a second connector 320 is connected to the second end. The end face of the first end of the tube body 350 is a first end face 353. The end face of the second end of the tube body 350 is a second end face 354.

[0290] In some embodiments, the tube body 350 may be made of an insulating material, such as thermoplastic polyurethane (TPU).

[0291] like Figure 39 As shown, the wire harness 340 may be located in the middle of the first channel 351, with both ends exposed at the first end face 353 and the second end face 354, respectively. In some embodiments, the first connector 310 may have a first through hole 314. The first through hole 314 penetrates the first connector 310 along its length. The second connector 320 may have a second through hole 321. The second through hole 321 penetrates the second connector 320 along its length. One end of the support member 330 may be exposed through the first through hole 314, and the other end may be exposed through the second through hole 321.

[0292] like Figure 40 As shown, the first connector 310 may have a first cavity 315. The first cavity 315 and the first through hole 314 may be spaced apart. The second connector 320 may have a second cavity 322. The second cavity 322 and the second through hole 321 may be spaced apart. The support member 330 may be located in the second channel 352. One end of the support member 330 may be located in the first cavity 315, and the other end may be located in the second cavity 322.

[0293] In some embodiments, the support member 330 can be a deformable metallic material, specifically a metal strip. It can also be an elastic metal or other material. For example, the support member 330 can be a metal wire made of shape memory alloy. It is understood that, compared to using ordinary metallic materials to fabricate the support member 330, using a shape memory alloy to fabricate the support member 330 can keep the first and second ends of the connecting arm 300 within a certain distance range, preventing the support member 330 from losing its initial shape after repeated stretching.

[0294] In some embodiments, the central axis direction of the first connector 310 is substantially the same as the central axis direction of the first end of the connecting arm 300, and the central axis direction of the second connector 320 is substantially the same as the central axis direction of the second end of the connecting arm 300. The central axis directions of the first connector 310 and the second connector 320 may also be at an angle. The angle ranges from 11.4° to 26°; for example, the angle can be 11.4°, 15°, 20°, or 26°.

[0295] It is understandable that the central axis direction of the first connector 310 and the central axis direction of the second connector 320 can be achieved by the shape of the support 330 made of shape memory alloy. First, the support 330 made of shape memory alloy is set into a preset shape. Then, the support 330 passes through the first channel 351 of the tube 350, with one end fixedly connected to the first connector 310 and the other end fixedly connected to the second connector 320. Then, under specific conditions, the support 330 is restored to the preset shape. At this time, the shape of the tube 350 can change with the change in the shape of the support 330, ultimately allowing the central axis direction of the first connector 310 and the central axis direction of the second connector 320 to be set at a preset angle.

[0296] In some embodiments, the central axis direction of the first end of the tube body 350 and the central axis direction of the second end of the tube body 350 may also be set at an angle.

[0297] like Figure 38 As shown, there is a gap between the wire harness 340 and the wall of the first channel 351. It can be understood that by creating this gap between the first channel 351 and the wire harness 340, the deformation of the wire harness 340 can be less than the deformation of the tube body 350 when the connecting arm 300 is bent. In other words, the stretching of the wire harness 340 is less than the stretching of the tube body 350 when the connecting arm 300 is bent. This makes the wire harness 340 less prone to breakage and extends its lifespan.

[0298] It is understood that the connecting arm 300 can be used to connect the first earphone body 100 and the second earphone body 200, and realize signal transmission between the first earphone body 100 and the second earphone body 200. The following will describe in detail, with reference to the accompanying drawings, an implementation method of connecting the connecting arm 300 to connect the first earphone body 100 and the second earphone body 200, and a specific implementation method of using the connecting arm 300 to realize signal transmission between the first earphone body 100 and the second earphone body 200.

[0299] like Figure 37 As shown, when the connecting arm 300 is connected between the first earphone body 100 and the second earphone body 200, the first connector 310 is connected to the first earphone body 100. The second connector 320 is connected to the second earphone body 200.

[0300] Figure 41 yes Figure 37 The diagram shows an enlarged view of one embodiment of the structure at point N.

[0301] like Figure 37 and Figure 41 As shown, the first connector 310 may include a body portion 311, a first protrusion 312, and a second protrusion 313. Figure 41The main body 311, the first protrusion 312, and the second protrusion 313 are schematically distinguished by dotted lines. The first protrusion 312 and the second protrusion 313 are fixedly connected to the side 3111 of the main body 311. The first protrusion 312 and the second protrusion 313 are arranged at intervals along the length of the first connector 310. One end of the first connector 310 is connected to the tube 350, and the other end is connected to the first earphone body 100.

[0302] Exemplarily, the wall surface 3511 of the first channel 351 may be recessed to form a first groove 355. The first groove 355 and the first end face 353 are spaced apart. The first protrusion 312 and a portion of the body portion 311 of the first connector 310 may be located within the first groove 355. Meanwhile, along the length direction of the first connector 310, the first end face 353 is partially located between the first protrusion 312 and the second protrusion 313. It is understood that the first protrusion 312 can serve as a limiting structure to prevent the tube body 350 from falling off the first connector 310.

[0303] The first groove 355 can connect to the first channel 351. When the first connector 310 is fixedly connected to the tube body 350, the first through hole 314 connects to the first channel 351. In this way, one end of the wire harness 340 can pass through the first through hole 314 and enter the second sub-cavity 103 of the first earphone body 100.

[0304] In some embodiments, the first protrusion 312 may be annular and sleeved on the side surface 3111 of the connecting body portion 311. In other embodiments, the first protrusion 312 may also include a plurality of sub-protrusions, which are spaced apart and connected to the side surface 3111 of the body portion 311.

[0305] In some embodiments, when the tube body 350 is made of TPU, the TPU material is elastic and the size of the first groove 355 can be designed to be slightly smaller than the first protrusion 312 of the first connector 310. As a result, the wall of the first groove 355 can abut against the first protrusion 312 and the body portion 311, and the connection strength between the tube body 350 and the first connector 310 is better.

[0306] In some embodiments, when the first connector 310 is connected to the first earphone body 100, the first connector 310 is also connected to the second housing 20. Exemplarily, the first connector 310 is partially located within the wire passage 83 of the wire harness bracket 80 and the second connection hole 26 of the second housing 20. The inner wall surface of the wire passage 83 of the wire harness bracket 80 may protrude to form a protrusion 831 along the length direction of the first connector 310. The protrusion 831 is located between the first protrusion 312 and the second protrusion 313 of the first connector 310 and is adjacent to the first end face 353 of the tube body 350. It is understood that the protrusion 831 of the wire harness bracket 80 can serve as a limiting structure to prevent the first connector 310 from detaching from the first earphone body 100 along the X-axis direction.

[0307] It is understandable that the way the second connector 320 connects to the tube body 350 and the second earphone body 200 can be the same as the way the first connector 310 connects to the tube body 350 and the first earphone body 100, and will not be described again here. When the second connector 320 is connected to the second earphone body 200, the second connector 320 can be fixedly connected to the third outer shell 210 of the second earphone body 200.

[0308] In some embodiments, the first end of the tube 350 may also be partially located within the third through hole 17. In this case, the tube 350 is located between the second housing 20 and the first connector 310.

[0309] In some embodiments, a third gap S1 may exist between the connecting arm 300 and the first earphone body 100. Exemplarily, the third gap S1 may be formed by the first connector 310, the first end face 353 of the tube 350, and the inner wall of the wire passage 83 of the wire harness bracket 80. When the first connector 310 is fixedly connected to the first earphone body 100 by adhesive, glue can be injected into the third gap S1 to achieve a fixed connection between the first connector 310 and the first earphone body 100. Similarly, a fourth gap S2 (not shown) may also exist between the second connector 320 and the second earphone body 200. When the second connector 320 is also fixedly connected to the second earphone body 200 by adhesive, glue can be injected into the fourth gap S2 to achieve a fixed connection between the second connector 320 and the second earphone body 200.

[0310] In some embodiments, the third gap S1 may be larger than the fourth gap S2. It is understood that during the assembly of the connecting arm 300, the first earphone body 100, and the second earphone body 200, due to assembly tolerances, if the angle between the central axis of the first end of the tube body 350 and the central axis of the second end of the tube body 350 does not reach the preset ideal angle, fine-tuning can be performed using the third gap S1 between the first connector 310 and the first earphone body 100. It should be noted that when the first connector 310 and the first earphone body 100 are fixedly connected by adhesive, the fine-tuning process must be completed before the adhesive solidifies.

[0311] In other embodiments, the third gap S1 may be smaller than the fourth gap S2. In this case, it can be fine-tuned by the fourth gap S2 between the second connector 320 and the second earphone body 200.

[0312] Figure 42 yes Figure 38 The diagram shows a cross-sectional view of the wire harness 340 at section line PP in one embodiment.

[0313] like Figure 42 As shown, the wiring harness 340 can be a collection of multiple signal lines 341. Exemplarily, the wiring harness 340 may include multiple signal lines 341 and a first package 342. The first package 342 has a first mounting channel 4321 along its length. The middle portion of each signal line 341 may be located within the first mounting channel 4321, with both ends protruding from the first mounting channel 4321. The first package 342 can be used to integrate nine signal lines 341 into a single unit for easy installation.

[0314] In some embodiments, the wiring harness 340 may include nine signal lines. The nine signal lines 341 are: one signal line 341 for transmitting power, one signal line 341 for grounding, two signal lines 341 for connecting to a capacitive sensor, two signal lines 341 for connecting to a feedback microphone, two signal lines 341 for connecting to a bone sensor, and two signal lines 341 for connecting to a speaker. It is understood that the number and type of signal lines 341 included in the wiring harness 340 can be adjusted according to the devices provided in the first earphone body 100, and this application does not impose any limitations.

[0315] In some embodiments, the signal line 341 used for transmitting power is a first signal line, and the signal line 341 used for connecting the speaker is a second signal line. The wiring harness 340 may also include a second package 343. The second package 343 can be used to separately package the two signal lines 341 used for connecting the speaker 30, making them a single unit. The second package 343 has a second mounting channel 3431 along its length. The two first signal lines are assembled within the second mounting channel 3431, with both ends exposed outside the second mounting channel 3431. In this case, the two first signal lines and the second package 343 constitute a sub-wiring harness. The sub-wiring harness and the first signal lines are assembled together within a first mounting channel 4321.

[0316] Understandably, the signal of speaker 30 is susceptible to interference from other signals, requiring high levels of crosstalk control. The signal lines 341 of speaker 30 are individually wrapped by the second package 343, meaning the two signal lines 341 connecting speaker 30 are independently configured. Then, they are wrapped together with the other signal lines 341 by the first package 342. This reduces the likelihood of interference from other signal lines, resulting in better sound quality for headphone 1000. In other embodiments, the signal lines of bone sensors also have high requirements for crosstalk control, so the two signal lines 341 connecting bone sensors can also be independently configured. In this case, the wiring harness 340 may also include a third package (not shown), which can be used to wrap the two signal lines 341 connecting bone sensors.

[0317] In some implementations, signal lines 341 with lower crosstalk requirements can be in the form of twisted pairs. For example, the two signal lines 341 used to connect the capacitance sensor can be in the form of twisted pairs. It is understood that compared to a scheme where the two signal lines 341 used to connect the capacitance sensor are set separately, using twisted pairs for the two signal lines 341 can significantly reduce the gap between the two signal lines 341, which is beneficial for reducing the cross-sectional area of ​​the wire harness 340, and thus the connecting arm 300 can be made thinner.

[0318] In some implementations, the two signal lines 341 used to connect the feedback microphone 40 may also be in the form of twisted pairs.

[0319] Figure 43 This is an assembly diagram of one embodiment of the wire harness 340, the first circuit board 70, and the second circuit board 280.

[0320] like Figure 43 As shown, one end of the wire harness 340 is connected to and electrically connected to the first circuit board 70. The other end of the wire harness 340 is connected to and electrically connected to the second circuit board 280. Combined with... Figure 13 and Figure 14 It can be seen that the feedback microphone 40, speaker 30, first capacitive sensor 60, and bone sensor 50 in the first earphone body 100 are all electrically connected to the first circuit board 70. Combined with... Figure 30 and Figure 31 It is known that the second circuit board 280 is electrically connected to the main board 260. Thus, the signals from the feedback microphone 40, speaker 30, first capacitive sensor 60, and bone sensor 50 in the first earphone body 100 can be transmitted to the main board 260 of the second earphone body 200 via the wiring harness 340. The wiring harness 340 can be used to transmit electrical signals between the first earphone body 100 and the second earphone body 200.

[0321] Figure 44 This is an assembly diagram of one embodiment of the wire harness 340, the first circuit board 70, and the wire harness bracket 80.

[0322] like Figure 44 As shown, the wire harness bracket 80 may include a bracket body 81 and multiple baffles 82. The fourth portion 74 of the first circuit board 70 is fixed to the bottom surface 812 of the bracket body 81. When the wire harness 340 includes multiple signal lines 341, the multiple signal lines 341 can pass through the wire passage 83 of the wire harness bracket 80, enter one side of the bottom surface 812 of the bracket body 81, and then be electrically connected to the fourth portion 74 of the first circuit board 70. The multiple signal lines 341 and the multiple baffles 82 are arranged alternately in sequence, that is, a baffle 82 is provided between two adjacent signal lines 341. The baffles 82 can be used to organize the multiple signal lines 341, separate the multiple signal lines 341 from each other, and reduce interference between the signal lines 341.

[0323] Figure 45 This is a schematic diagram of one embodiment of the audio device 3000 provided in this application.

[0324] like Figure 45 As shown, this application also provides an audio device 3000, which includes headphones 1000 and a headphone case 2000. The headphones are disposed within the headphone case 2000. The headphone case 2000 can be used to store the headphones 1000. In some embodiments, the headphone case 2000 can also be used to charge the headphones 1000.

[0325] In some embodiments, the audio device 3000 may include two headphones 1000.

[0326] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0327] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0328] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An earphone, characterized in that, It includes a first earphone body, a connecting arm, and a second earphone body, wherein the connecting arm connects the first earphone body and the second earphone body; When a user wears the headphones, the first earphone body is held in the user's concha cavity, and the second earphone body is located outside the user's ear and on the side opposite to the first earphone body. The earphone includes an antenna module, which is disposed within the second earphone body; The earphone includes a motherboard, which is disposed within the second earphone body; The antenna module includes a feed line, a main body unit, a parasitic unit, and a ground line arranged in sequence. One end of the power supply trace is connected to the main unit, and the other end is connected to the motherboard; One end of the main unit is connected to the power supply line, and the other end of the main unit is spaced apart from the parasitic unit; One end of the parasitic unit is spaced apart from the main unit, and the other end of the parasitic unit is connected to the grounding wire; One end of the grounding trace is connected to the parasitic unit, and the other end is connected to the motherboard; The center of the outer surface of the first earphone body, the center of the outer surface of the second earphone body, and the center of the outer surface of the connecting arm are connected to form a plane of symmetry; The main unit and the parasitic unit are arranged symmetrically about the symmetry plane; There is a gap between the main unit and the parasitic unit. After the main unit is energized, the main unit couples and excites the parasitic unit, and a capacitive coupling excitation parasitic mode is formed between the main unit and the parasitic unit.

2. The earphone of claim 1, wherein The second earphone body includes a third outer shell away from the first earphone body and a fourth outer shell close to the first earphone body, and the antenna module is fixedly connected to the inner surface of the third outer shell.

3. The earphone of claim 2, wherein The inner surface of the third housing is provided with a first positioning post, which is formed by a protrusion on the inner surface. The antenna module is provided with a positioning hole, and the first positioning post is located in the positioning hole.

4. The headphones according to claim 1 or 2, characterized in that, The antenna module includes a packaging structure and an antenna structure, wherein the antenna structure is embedded within the packaging structure.

5. The headphones according to claim 1 or 2, characterized in that, The main unit is a monopole antenna.

6. The earphone according to claim 1 or 2, wherein the width of the power supply trace is smaller than the width of the main body unit.

7. The headphones according to claim 1 or 2, characterized in that, The antenna module is a flexible circuit board.

8. The earphone of claim 1 or 2, wherein, The second earphone body includes a battery, which is disposed on the side of the antenna module away from the third housing. The battery and the antenna module are opposite to each other and spaced apart, and the distance between the battery and the antenna module is greater than or equal to 0.2 mm.

9. The headphones according to claim 1 or 2, characterized in that, The motherboard is located on the side of the battery away from the antenna module.

10. The earphone of claim 8, wherein, The power supply traces of the antenna module are connected to the motherboard through the gap between the third housing and the battery.

11. The earphone of claim 9, wherein, The motherboard has a motherboard bracket on the side near the antenna module. The motherboard bracket has a positioning post. The motherboard includes a circuit board and electronic components disposed on the circuit board. The circuit board has a clearance hole, and the positioning post on the motherboard bracket is located in the clearance hole.

12. The earphone of claim 11, wherein, The motherboard bracket includes a first limiting part and a second limiting part arranged around the battery.

13. The earphone of claim 1 or 2, wherein, The antenna module is 13.8 mm long.

14. The earphone of claim 1 or 2, wherein, The antenna module has a width of 5.9 mm.

15. The headphones according to claim 1 or 2, characterized in that, The gap between the main unit and the parasitic unit is 0.5 mm.

16. The headphones according to claim 1 or 2, characterized in that, The main body unit includes a first side close to the gap and a second side away from the gap, the parasitic unit includes a third side close to the gap and a fourth side away from the gap, the gap is between the first side and the third side, the power supply trace is connected to the second side of the main body unit, and the grounding trace is connected to the fourth side of the parasitic unit.

17. An audio device, comprising: It includes an earphone case and earphones as claimed in any one of claims 1 to 16, wherein the earphones are disposed within the earphone case.

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