Earphone and a pair of earphones

Abstract

This application provides an earphone including a first earphone body, a flexible connecting arm, and a second earphone body. The flexible connecting arm is connected between the first earphone body and the second earphone body. The first earphone body and the second earphone body are disposed opposite each other and have an initial distance. The flexible connecting arm has deformability, and the deformation of the flexible connecting arm can adjust the initial distance between the first earphone body and the second earphone body to an adjustable distance.

Description

[0001] Headphones and a pair of headphones Technical Field

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

[0003] True Wireless Stereo (TWS) earbuds are highly favored by consumers due to their true wireless design, small size, and portability. However, almost all true wireless stereo earbuds on the market are in-ear or semi-in-ear devices, which can intrude into the user's ear canal, causing pressure and making it impossible for users to wear them for extended periods, and even leading to health problems. Although open-back audio devices have gradually appeared on the market, they still suffer from poor wearing comfort and unsatisfactory sound quality. Summary of the Invention

[0004] This application provides an earphone and an earphone to solve the problem of poor wearing comfort in existing true wireless stereo earphones.

[0005] To address the above issues, in a first aspect, this application provides an earphone comprising a first earphone body, a flexible connecting arm, and a second earphone body, wherein the flexible connecting arm is connected between the first earphone body and the second earphone body, and the first earphone body and the second earphone body are disposed opposite to each other and have an initial distance.

[0006] The flexible connecting arm is capable of deformation, and the deformation of the flexible connecting arm can adjust the initial distance between the first earphone body and the second earphone body to an adjustable distance.

[0007] In one embodiment, the distance between the first earphone body and the second earphone body is greater than or equal to 2 mm and less than or equal to 5 mm.

[0008] In this embodiment, when worn, the earphone equipped with the flexible connecting arm can adjust the distance between the first earphone body and the second earphone body by deforming the flexible connecting arm to accommodate users with different ear thicknesses, providing appropriate clamping force for each user and avoiding excessively tight or loose clamping that affects the wearing experience. On the other hand, when the user puts on and takes off the earphone, the flexible connecting arm can be used to increase the distance between the first earphone body and the second earphone body to ensure that the earphone can be put on and taken off smoothly, avoiding ear pressure deformation and improving the user's experience when putting on and taking off the earphone.

[0009] In one embodiment, the height of the flexible connecting arm is greater than or equal to 3 mm and less than or equal to 30 mm, so as to avoid the flexible connecting arm scraping against the outer edge of the user's ear during daily use of the headphones.

[0010] In one embodiment, the flexible connecting arm includes a deformable element and an insulating soft body, the insulating soft body being sleeved on the outside of the deformable element;

[0011] The flexible connecting arm includes a first end and a second end opposite to each other. The first end is connected to the first earphone body, and the second end is connected to the second earphone body. The deformation of the deformable member causes the flexible connecting arm to deform.

[0012] In this embodiment, the insulating soft material does not cause excessive pressure on the ear compared to hard plastic material, thus improving the user's wearing comfort.

[0013] In one embodiment, the earphone includes a first limiting part and a second limiting part. The first limiting part is connected to the first end of the flexible connecting arm, and the first limiting part is detachably mounted on the first earphone body, thereby connecting the first earphone body and the flexible connecting arm.

[0014] The second limiting part is connected to the second end of the flexible connecting arm, and the second limiting part is detachably mounted on the second earphone body, thereby connecting the second earphone body and the flexible connecting arm.

[0015] In this embodiment, the first limiting part is detachable from the first earphone body, and the second limiting part is detachable from the second earphone body, which facilitates the assembly, maintenance, and replacement of parts of the earphone and reduces the assembly and maintenance costs of the earphone.

[0016] In one embodiment, the first limiting part is held in place at the first end, or the first limiting part is installed and fixed at the first end of the flexible connecting arm;

[0017] The second limiting part is held in place at the second end, or the second limiting part is installed and fixed at the second end of the flexible connecting arm.

[0018] In this embodiment, the first limiting part is detachably separable from the first end, and the second limiting part is detachably separable from the second end, which facilitates the assembly, maintenance, and replacement of parts of the earphone and reduces the assembly and maintenance costs of the earphone.

[0019] In one embodiment, the first limiting portion is integrally formed with the flexible connecting arm, or the second limiting portion is integrally formed with the flexible connecting arm.

[0020] In this embodiment, the first limiting part and the second limiting part are integrally formed with the flexible connecting arm, which reduces the number of steps in the earphone forming process and lowers the earphone processing cost.

[0021] In one embodiment, the first limiting part is fitted around the outer periphery of the first end, or the first limiting part is attached to the end face of the first end.

[0022] In one embodiment, the first end of the flexible connecting arm is provided with a first recess and a first locking block, the opening side of the first recess faces away from the end face of the first end, the first locking block protrudes from one side of the first recess, and a locking platform is provided on the inner peripheral side of the first recess.

[0023] The first limiting part is provided with a first annular groove and a first connecting channel on its outer side. The length extension direction of the first slot is perpendicular to the length extension direction of the first connecting channel. The first limiting part is inserted into the first recess, the first slot is engaged with the card platform of the first recess, and the first card block is engaged with the first connecting channel.

[0024] In one embodiment, the second limiting part is sleeved on the outer periphery of the second end, or the second limiting part is fixed to the end face of the second end.

[0025] In one embodiment, the second end is provided with a second recess and a second locking block, the opening side of the second recess faces away from the end face of the second end, the second locking block protrudes from one side of the second recess, and a locking platform is provided on the inner peripheral side of the second recess;

[0026] The second limiting part is provided with a second annular groove and a second connecting channel on its outer side. The length extension direction of the second annular groove is perpendicular to the length extension direction of the second connecting channel. The second limiting part is inserted into the second recess, and the second annular groove is engaged with the locking platform of the second recess. The second locking block is engaged with the second connecting channel.

[0027] In one embodiment, the outer peripheral surface of the first limiting part is provided with a first protrusion, and the first earphone body includes a first outer shell and a second outer shell, the second outer shell is provided with a second sub-cavity and a first limiting groove located in the second sub-cavity;

[0028] The first groove of the first limiting groove has a first slot recessed on its peripheral wall, the first limiting part is received in the first limiting groove, and the first protrusion is engaged with the first slot.

[0029] In one embodiment, two first protruding ridges are provided on the outer side of the first limiting part. The two first protruding ridges are located on opposite surfaces at one end of the first limiting part. The first connecting channel is spaced apart from the first protrusions. The two first protrusions are located on opposite sides of the first slot.

[0030] The first earphone body includes a first outer shell and a second outer shell. The second outer shell has a first sub-cavity and a first limiting groove located in the first sub-cavity. The first groove peripheral wall of the first limiting groove is provided with two opposing first abutments and second abutments. The first limiting part is received in the first limiting groove, and the two first protrusions are respectively engaged with the first abutment and the second abutment.

[0031] In one embodiment, the second limiting portion has a second protrusion on its outer peripheral surface, and the second earphone body includes a third outer shell and a fourth outer shell, wherein the fourth outer shell has a fourth sub-cavity and a second limiting groove located in the fourth sub-cavity;

[0032] The second limiting groove has a second slot recessed on its second groove peripheral wall, the second limiting part is received in the second limiting groove, and the second protrusion is engaged with the second slot.

[0033] In one embodiment, two second protruding ridges are provided on the outer side of the second limiting part. The two second protruding ridges are located on opposite surfaces of one end of the second limiting part. The first slot and the second protruding ridges are spaced apart. The two first protrusions are located on opposite sides of the first slot.

[0034] In one embodiment, the opposite ends of the deformable member extend beyond the first end and the second end, respectively.

[0035] The first earphone body includes a first outer shell and a second outer shell. The second outer shell is provided with a second sub-cavity and a first limiting groove located in the first sub-cavity. A first opening groove is provided on one side of the first groove peripheral wall of the first limiting groove. The first opening groove communicates with the first limiting groove. One end of the deformable member extending from the first end is held in the first opening groove.

[0036] The second earphone body includes a third outer shell and a fourth outer shell. The second outer shell is provided with a second sub-cavity and a second limiting groove located in the second sub-cavity. A second opening groove is provided on one side of the second groove peripheral wall of the second limiting groove. The second opening groove communicates with the second limiting groove. One end of the deformable member extending from the second end is held in the second opening groove.

[0037] In this embodiment, the first opening slot and the second opening slot respectively hold the two ends of the deformable component, which greatly restricts the rotational and translational movement of the deformable component, enhances the installation stability of the deformable component, and makes the control of the distance between the second earphone body and the second earphone body through the deformation of the deformable component more precise, thereby improving the stability and firmness of the earphone when worn.

[0038] In one embodiment, the first earphone body includes a first outer shell and a second outer shell;

[0039] The first outer shell includes a first outer peripheral surface, which is symmetrical about a symmetry plane;

[0040] The second outer casing includes a second outer peripheral surface, which is symmetrical about a plane of symmetry;

[0041] The second earphone body includes a third shell and a fourth shell;

[0042] The third outer shell includes a third outer peripheral surface, which is symmetrical about a symmetry surface;

[0043] The fourth outer shell includes a fourth outer peripheral surface, which is symmetrical about a symmetry surface;

[0044] The outer contour of the flexible connecting arm is symmetrical about the symmetrical plane.

[0045] In this embodiment, the outer contours of the first earphone body, the flexible connecting arm, and the second earphone body are completely symmetrical about the plane of symmetry. Therefore, the original design allows the left earphone to be flipped over and worn in the right ear. It can be understood that the factory-set left earphone and the factory-set right earphone are completely identical in appearance, so users do not need to distinguish between the left and right ears when wearing the earphones provided in this application.

[0046] In one embodiment, the first microphone, the second microphone, and the pickup of the first earphone body are symmetrical about a symmetrical plane;

[0047] The first microphone and the second microphone of the second earphone body are arranged opposite to each other inside the second earphone body, and the positions of the first microphone and the positions of the second microphone are symmetrical about the plane of symmetry;

[0048] In this embodiment, the headphones are symmetrical about both the audio output and input planes. Whether the user wears the headphones in the right or left ear, the audio input and output effects are consistent and do not change due to spatial position. Therefore, the user does not need to distinguish between the left and right ears when using the headphones.

[0049] In one embodiment, the headphones further include an inertial measurement unit sensor and a control unit;

[0050] When a user wears the headphones, the inertial measurement unit sensor is used to determine whether the headphones are located in the user's left or right ear, and then sends the determination information to the control unit.

[0051] After receiving the judgment information sent by the inertial measurement unit sensor, the control unit controls the earphone to switch the sound channel, so that the earphone worn on the ear switches to the sound channel corresponding to the left or right ear.

[0052] In this embodiment, the earphone can use the inertial measurement unit sensor to determine whether the earphone is being worn in the user's left or right ear, and then switch the left and right channels for matching. This ensures that the user can still have a good listening experience when making calls using the earphone in usage scenarios where there is no distinction between left and right ears.

[0053] In one embodiment, the first earphone body includes a first outer shell and a second outer shell that docks with the first outer shell. The second outer shell includes a second through hole, which faces away from the second outer shell and towards the first outer shell. In the length direction perpendicular to the flexible connecting arm, the second through hole is an arc-shaped hole with a central angle of less than or equal to 90°, which prevents the second sound transmission nozzle of the earphone from being blocked by the human ear and improves the stability of audio performance.

[0054] In one embodiment, the second earphone body further includes a first electrode and a second electrode; the first electrode and the second electrode are symmetrical about a symmetrical plane. Therefore, the left and right earphones are in exactly the same state when charging in the charging case, and the user does not need to distinguish between the left and right ears when charging the earphones.

[0055] In one embodiment, the earphones include a microphone function, and the first and second earphone bodies are capable of holding the user's clothing or a stand.

[0056] The second earpiece contains first and second microphones, which together function as a microphone. The key is understanding the scenarios in which this microphone function can be used: the earpiece can be held close to the mouth for sound pickup, clipped to clothing for sound pickup, or clipped to a stand for microphone use, suitable for karaoke, video recording, live streaming, and calls. Clipping it to clothing or collar frees the user's hands, allowing for unobtrusive and high-quality sound pickup without interfering with other activities.

[0057] On the other hand, this application also provides a pair of headphones, including a first headphone and a second headphone, wherein the first headphone and the second headphone are the headphones.

[0058] In summary, the earphones provided in this application, on the one hand, connect the first and second earphone bodies via flexible connecting arms. The flexible connecting arms adjust the distance between the first and second earphone bodies to accommodate users with different ear thicknesses, providing suitable clamping force for each user and greatly improving the user experience of wearing and removing the earphones. On the other hand, through a symmetrical design in appearance, charging, and audio effects, the problem of difficulty in distinguishing between left and right ears in wireless earphones with similar shapes is solved. This allows users to wear the earphones without needing to differentiate between left and right ears, improving the flexibility of earphone use and enhancing the user experience of wearing wireless earphones. Furthermore, through the microphone layout and shape design, users can clip the earphones to their collar for recording in scenarios such as karaoke, video recording, live streaming, and calls. The cantilever arms of the earphones provide clamping force, ensuring a stable and secure fit on the collar. This transforms traditional earphones from broadcasting devices into recording devices, expanding the functionality and application scenarios of traditional earphones. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0060] Figure 1 This is a schematic diagram of the structure of the earphone provided in this application;

[0061] Figure 2 This is a state diagram of a user using the headphones provided in this application;

[0062] Figure 3 yes Figure 1 An exploded structural diagram of the first earphone body in the first embodiment of the earphone shown;

[0063] Figure 4 yes Figure 1 An exploded structural diagram of the second earphone body in the first embodiment of the earphone shown;

[0064] Figure 5 yes Figure 1 A schematic diagram of the flexible connecting arm in the first embodiment of the earphone shown;

[0065] Figure 6 yes Figure 1 A partially exploded structural diagram of the first embodiment of the earphone shown.

[0066] Figure 7 yes Figure 6 The diagram shows the structure of the second outer shell;

[0067] Figure 8 yes Figure 6 The diagram shows the structure of the fourth outer shell;

[0068] Figure 9A , Figure 9B , Figure 9C and Figure 9D yes Figure 6 The assembly steps of the first embodiment are shown in the diagram.

[0069] Figure 10 yes Figure 6 The diagram shows the internal structure of the assembled earphone section.

[0070] Figure 11 yes Figure 1 A partially exploded structural diagram of the second embodiment of the headphones shown;

[0071] Figure 12 yes Figure 11 The diagram shows the structure of the first limiting part;

[0072] Figure 13 yes Figure 11 The diagram shows the structure of the second limiting part;

[0073] Figure 14A , Figure 14B , Figure 14C , Figure 14D , Figure 14E yes Figure 11 The assembly steps of the second embodiment are shown in the diagram.

[0074] Figure 15 yes Figure 11 The diagram shows the internal structure of the assembled earphone section.

[0075] Figure 16 yes Figure 1 A partially exploded structural diagram of the third embodiment of the headphones shown.

[0076] Figure 17 yes Figure 16 The diagram shows the structure of the second outer shell;

[0077] Figure 18 yes Figure 16 The diagram shows the structure of the fourth outer shell;

[0078] Figure 19 yes Figure 16 The diagram shows the internal structure of the assembled earphone section.

[0079] Figure 20 This is a scenario diagram showing the earphones provided in this application being worn when used as a wireless recording microphone;

[0080] Figure 21 This is an exploded view of the headphones and windproof cover provided in this application;

[0081] Figure 22 This is an exploded view of the headphones, the first stabilizing accessory, and the second stabilizing accessory provided in this application;

[0082] Figure 23 This is a schematic diagram of the headphones provided in this application from one angle, which shows the internal structure of the headphones;

[0083] Figure 24 This is a schematic diagram of the headphones provided in this application from another angle, which shows the internal structure of the headphones;

[0084] Figure 25 This is a schematic diagram showing the state of the earphones provided in this application being worn on the left and right ears respectively;

[0085] Figure 26 This is a top view of the headphones provided in this application from one angle. Detailed Implementation

[0086] The embodiments of this application are described in conjunction with the accompanying drawings.

[0087] This application provides an earphone and a pair of earphones. The earphone is a clip-on wireless earphone that can be clipped onto the ear and can be an open-back design. Clip-on earphones can reduce ear discomfort and improve wearing comfort. A pair of earphones includes two earphones, which can be divided into a first earphone and a second earphone. The first earphone and the second earphone are respectively used for wearing on the user's left and right ears. The first and second earphones do not distinguish between left and right ears; that is, the first earphone can be worn on either the left or right ear, and the second earphone can be worn on either the left or right ear, thus improving the portability of the earphones.

[0088] The headphones of this application are described in detail below with reference to the accompanying drawings.

[0089] Please see Figure 1 , Figure 1 This is a structural schematic diagram of the earphone 1000 provided in this application.

[0090] The earphone 1000 is generally U-shaped and includes a first earphone body 100, a flexible connecting arm 200, and a second earphone body 300. The flexible connecting arm 200 is generally U-shaped and connects the first earphone body 100 and the second earphone body 300. The first earphone body 100 and the second earphone body 300 are arranged opposite to each other, and the flexible connecting arm 200 forms a physical connection between the first earphone body 100 and the second earphone body 300, while also providing an electrical connection.

[0091] For ease of description, the line connecting the geometric center of the second earphone body 300 and the geometric center of the first earphone body 100 is defined as the X-axis, and the direction from the geometric center of the second earphone body 300 to the geometric center of the first earphone body 100 is defined as the positive direction of the X-axis; the straight line passing through the geometric center of the end face connecting the flexible connecting arm 200 to the second earphone body 300 and perpendicular to the end face is defined as the Y-axis, and the direction from the geometric center of the end face to the second earphone body 300 is defined as the positive direction of the Y-axis; the straight line perpendicular to both the X-axis and the Y-axis is defined as the Z-axis; and the plane uniquely defined by the X-axis and the Y-axis is defined as the OO plane.

[0092] Please refer to the following: Figure 2 , Figure 2 This is a state diagram of a user using the Headphone 1000 provided in this application.

[0093] During use, the first earphone body 100 is held within the user's concha cavity, without penetrating deep into the user's ear canal. The first earphone body 100 can be spherical, or it can be an irregular sphere. The human concha cavity has a much higher tolerance than the ear canal, therefore, the earphone 1000 provided in this application can greatly improve wearing comfort compared to in-ear audio devices.

[0094] The second earphone body 300 is located outside the user's ear and on the side opposite to the first earphone body 100. The second earphone body 300 adopts a contoured design, shaped like a bean, which conforms to the curvature of the user's ear when worn, thereby improving the user's wearing comfort.

[0095] A flexible connecting arm 200 is fastened to the outer edge of the user's ear, extending from the concha to the back of the ear. The flexible connecting arm 200, together with the first earphone body 100 and the second earphone body 300, clamps the user's auricle, thereby placing the earphone 1000 on the ear. In the embodiments provided in this application, the flexible connecting arm 200 has deformability, allowing adjustment of the distance L between the first earphone body 100 and the second earphone body 300. The distance L between the first earphone body 100 and the second earphone body 300 should be greater than or equal to 2 mm and less than or equal to 5 mm to ensure that the earphone 1000 has a moderate clamping force and will not fall off the auricle, nor will it excessively clamp the ear. The height H of the flexible connecting arm 200 should be greater than or equal to 3 mm and less than or equal to 30 mm to avoid rubbing against the outer edge of the user's auricle during daily use.

[0096] In practice, the first earphone body 100 and the second earphone body 300 are positioned opposite each other and have an initial distance; the deformation of the flexible connecting arm can adjust the initial distance between the first earphone body and the second earphone body to an adjustable distance. The adjustable distance is the distance by which the initial distance increases or decreases.

[0097] Specifically, the initial distance and adjustment distance both refer to the distance L between the first earphone body 100 and the second earphone body 300; the distance between the surfaces of the first earphone body 100 and the second earphone body 300 that face each other, which is the distance between the two earphone surfaces that first come into contact with the ear. The height H of the flexible connecting arm 200 refers to the longest distance between the flexible connecting arm 200 and the end face of the flexible connecting arm 200 in the direction perpendicular to the end face of the flexible connecting arm 200 (Y-axis direction).

[0098] The earphone 1000, equipped with a flexible connecting arm 200, can accommodate users with different ear thicknesses, providing appropriate clamping force to avoid excessive tightness or looseness affecting the wearing experience. Simultaneously, when putting on and taking off the earphone 1000, the flexible connecting arm 200 can be used to increase the distance L between the first earphone body 100 and the second earphone body 300 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.

[0099] Please see Figure 3 , Figure 3 This is an exploded structural diagram of the first earphone body 100 in the first embodiment provided in this application.

[0100] The first earphone body 100 includes a first outer shell 110, a first microphone 120, a pickup 130, a speaker 140, a sound transmission tube 150, a second microphone 160, and a second outer shell 170. The first microphone 120 is the front cavity sound outlet, used to transmit sound emitted from the speaker 140 to the ear. The pickup 130 is a microphone. The second microphone 160 is the rear vent of the speaker, connecting the inside and outside of the earphone to maintain air pressure balance.

[0101] The first outer shell 110 is a hemispherical shell. The first outer shell 110 includes an open first sub-cavity, a first inner side surface 111, a first end surface 112, and a first outer peripheral surface 113. The first outer peripheral surface 113 is a hemispherical surface, and the first inner side surface 111 is the inner surface of the first sub-cavity. The first inner side surface 111 is disposed opposite to the first outer peripheral surface 113; the first end surface 112 is annular and surrounds the opening of the first sub-cavity, and the first end surface 112 connects the first inner side surface 111 and the first outer peripheral surface 113.

[0102] The first outer casing 110 is provided with a first through hole 114, which passes through the first inner side surface 111 and the first outer peripheral surface 113. The shape of the first through hole 114 is adapted to the shape of the first sound transmission nozzle 120.

[0103] The second outer shell 170 is a hemispherical shell, disposed opposite to the first outer shell 110, and has the same radius as the first outer shell 110. The second outer shell 170 includes a second inner surface 171 (not shown in the figure), a second end surface 172, and a second outer peripheral surface 173. The second inner surface 171 and the second outer peripheral surface 173 are disposed opposite to each other, and the second end surface 172 connects the second inner surface 171 and the second outer peripheral surface 173.

[0104] The second outer casing 170 is provided with a second through hole 174, which passes through the second inner side surface 171 (not shown) and the second outer peripheral surface 173, and connects the second inner side surface 171 and the second outer peripheral surface 173. The shape of the second through hole 174 is adapted to the shape of the second sound transmission nozzle 160.

[0105] The first outer shell 110 and the second outer shell 170 can be mated and fixedly connected. The first outer shell 110 can be fixed to the second outer shell 170 by means such as snap-fit ​​or adhesive. Specifically, when the first outer shell 110 and the second outer shell 170 are mated, the first end face 112 and the second end face 172 are parallel and opposite to each other and fit together; the first inner surface 111 and the second inner surface 171 are connected to form a first cavity. It can be understood that the first cavity is formed by the docking of a first sub-cavity and a second sub-cavity. The first cavity is approximately spherical and is used to install and accommodate various electronic components. The first outer peripheral surface 113 and the second outer peripheral surface 173 are connected to form the spherical outer peripheral surface of the first earphone body 100.

[0106] The first sound-transmitting nozzle 120 is provided with several first sound-leaking holes 121 for transmitting sound to the human ear. The first sound-transmitting nozzle 120 is fixedly installed in the first through hole 114, and the first sound-leaking holes 121 are exposed through the first through hole 114 to the first outer shell 110.

[0107] The second sound mouthpiece 160 is provided with several second sound leakage holes 161, which are used to transmit sound and conduct the internal and external air pressure of the headphones to maintain air pressure balance. The second sound mouthpiece 160 is fixedly installed in the second through hole 174, and the second sound leakage holes 161 are exposed through the second through hole 174 to the second outer shell 170.

[0108] The speaker 140 is generally cylindrical and is housed within the first cavity. The speaker 140 has a sound output area 141 located in the second sub-cavity facing the second outer shell 170, used for sound playback. In one embodiment, the speaker 140 has a dual-diaphragm structure, which, compared to traditional dynamic-armature units, can effectively improve the low-frequency performance under open-back soundstage functionality, compensating for the drawback of the second sound transmission nozzle 160 of the earphone 1000 being a certain distance from the ear canal.

[0109] A first acoustic cavity is formed between the back of the speaker 140 and the first sub-cavity of the first outer shell 110, and a second acoustic cavity is formed between the speaker 140 and the second sub-cavity of the second outer shell 170. The speaker 140 independently separates the first and second acoustic cavities. The first acoustic cavity serves as the front acoustic cavity of the speaker 140 and transmits and interacts with the outside of the shell through the first vent hole 121. The second acoustic cavity is the rear acoustic cavity of the speaker 140. The periphery of the speaker 140 is sealed between the first outer shell 110 and the second outer shell 170 to achieve the effect of sealing the acoustic cavities.

[0110] In one embodiment, a separate conduit is formed in the first acoustic cavity to connect the first earphone body 100 to the outside, serving as a bass resonator. Specifically, the sound transmission tube 150 is generally fan-shaped and is disposed between the sound output area 141 of the speaker 140 and the second outer shell 170. The sound transmission tube 150 has a channel 151 that extends through the thickness of the sound transmission tube 150 to transmit the sound played in the sound output area 141 of the speaker 140 to the second sound transmission nozzle 160.

[0111] The first flexible circuit board 180 is generally U-shaped, including a first segment 181, a connecting segment 182, and a second segment 183 connected sequentially. The connecting segment 182 connects the first segment 181 and the second segment 183, with the first segment 181 and the second segment 183 positioned opposite each other and forming an angle with the connecting segment 182. The first segment 181 is located between the first sound mouthpiece 120 and the speaker 140; the second segment 183 is located between the speaker 140 and the sound transmission tube 150, and is electrically connected to the speaker 140; the connecting segment 182 is simultaneously fixed to the first inner side surface 111 and the second inner side surface 171. It can be understood that after the first earphone body 100 is assembled, the first inner side surface 111 of the first outer shell 110 and the second inner side surface 171 of the second outer shell 170 form the inner side surface of the first cavity, at which point the connecting segment 182 is fixed to the inner side surface of the first cavity. The second segment 183 is electrically connected to the circuit board or to a wiring connection.

[0112] The microphone 130 is mounted on the first flexible circuit board 180, specifically, the first segment 181 forms a physical and electrical connection with the microphone 130. The microphone 130 faces and is close to the first microphone nozzle 120, and the periphery of the microphone 130 in contact with the first microphone nozzle 120 is sealed, forming an independent pickup channel.

[0113] During the use of the headphones 1000, because the microphone 130 is close to the first microphone 120, and the first microphone 120 is close to the user's ear canal, the microphone 130 can act as a feedback microphone to pick up the sound entering the user's ear canal, thereby forming acoustic feedback and achieving the effects of noise reduction and adaptive sound adjustment.

[0114] Please see Figure 4 , Figure 4 This is an exploded structural diagram of the second earphone body 300 in the first embodiment provided in this application.

[0115] The second earphone body 300 includes a third outer shell 310, a first electrode 320, a second electrode 330, a motherboard 340, a battery 360, a first microphone 370, a second microphone 380, and a fourth outer shell 390.

[0116] The third outer shell 310 is generally elliptical in shape and includes an open third sub-cavity, a third inner surface 311, a third end face 312, and a third outer peripheral surface 313. The third outer peripheral surface 313 is a partially ellipsoidal surface, and the third inner surface 311 is the inner surface of the third sub-cavity. The third inner surface 311 is positioned opposite to the third outer peripheral surface 313, and the third end face 312 is generally elliptical and surrounds the opening of the third sub-cavity, connecting the third inner surface 311 and the third outer peripheral surface 313.

[0117] The fourth outer casing 390 is disposed opposite to the third outer casing 310, and includes an open fourth sub-cavity, a fourth inner surface 391, a fourth end face 392, and a fourth outer peripheral surface 393. The fourth inner surface 391 is the inner surface of the fourth sub-cavity, and the fourth inner surface 391 and the fourth outer peripheral surface 393 are disposed parallel to each other and opposite to each other. The fourth end face 392 is generally elliptical and surrounds the opening of the fourth sub-cavity, and the fourth end face 392 connects the fourth inner surface 391 and the fourth outer peripheral surface 393. The fourth end face 392 and the third end face 312 are disposed parallel to each other.

[0118] The fourth housing 390 is provided with a third through hole 394 and a fourth through hole 395. The third through hole 394 penetrates the fourth inner surface 391 and the fourth outer peripheral surface 393, and the shape of the third through hole 394 is adapted to the shape of the first electrode 320. The fourth through hole 395 penetrates the fourth inner surface 391 and the fourth outer peripheral surface 393 in sequence, and the shape of the fourth through hole 395 is adapted to the shape of the second electrode 330. The third through hole 394 and the fourth through hole 395 are located on one side of the fourth housing 390 and are spaced apart along the length direction.

[0119] The third housing 310 and the fourth housing 390 can be mutually fitted and fixedly connected. The third housing 310 can be fixed to the fourth housing 390 by means such as adhesive or snap-fit. Specifically, when the third housing 310 and the fourth housing 390 are fitted together, the third end face 312 and the fourth end face 392 are in contact with each other; the third inner side face 311 and the fourth inner side face 391 are connected to form a second cavity for mounting and accommodating electronic devices. It can be understood that the second cavity includes a third sub-cavity and a fourth sub-cavity. The third outer peripheral surface 313 and the fourth outer peripheral surface 393 are connected to form the bean-shaped outer contour of the second earphone body 300.

[0120] The battery 360 is roughly cylindrical and is located in the second cavity. It is used to store electrical energy or power the earphone 1000 and is electrically connected to the various electronic components inside the earphone 1000.

[0121] The motherboard 340 is located around the periphery of the battery 360, electrically connected to the battery, and forms a locking and limiting relationship with the battery 360. The motherboard 340 can integrate functions such as charging, antenna, wear detection, posture detection, gesture control, and audio control. At the same time, the motherboard 340 is used for electrical connection with the microphone 130 and the speaker 140.

[0122] The first microphone 370 and the second microphone 380 are installed in the fourth sub-cavity. The second microphone 380 and the first microphone 370 are located at opposite ends along the length (X-axis direction) of the fourth inner side 391 of the fourth housing 390. The sound generated by the first microphone 370 and the second microphone 380 is transmitted out of the second earphone body 300 through the sound holes (located at opposite ends along the length of the fourth housing 390). That is, the second microphone 380 and the first microphone 370 are located at opposite ends of the second earphone body 300, and the oppositely arranged first microphone 370 and second microphone 380 can form a beam array, improving the ability to pick up human voice and ambient sound, and enhancing the uplink call noise reduction capability.

[0123] The first electrode 320 can be fixedly installed in the third through hole 394 and electrically connected to the main board 340; the second electrode 330 can be fixedly installed in the fourth through hole 395 and electrically connected to the main board 340. The first electrode 320 and the second electrode 330 have opposite polarities. When the user charges the earphone 1000, the first electrode 320 and the second electrode 330 act as the positive and negative electrodes, respectively, but the correspondence between the first electrode 320 and the second electrode 330 and the positive and negative electrodes is not fixed. It can be understood that the first electrode 320 can be the positive electrode and the second electrode 330 can be the negative electrode; or the first electrode 320 can be the negative electrode and the second electrode 330 can be the positive electrode.

[0124] Please see Figure 5 and Figure 6 , Figure 5 yes Figure 1 The diagram shows the structure of the flexible connecting arm 200. Figure 6 This is a partial structural exploded view of the first embodiment provided in this application.

[0125] The earphone 1000 also includes a first limiting portion 240 and a second limiting portion 250. The first limiting portion 240 and the second limiting portion 250 are connected to opposite ends of the flexible connecting arm 200, namely the first end 220 and the second end 230. The first limiting portion 240 and the second limiting portion 250 are used to connect the flexible connecting arm 200 to the first earphone body 100 and the second earphone body 300. The first limiting portion 240 and the second limiting portion 250 can be detachably connected to the flexible connecting arm 200 or can be integrally formed.

[0126] In this embodiment, the flexible connecting arm 200 includes several cables 211, deformable members 212, and insulating soft body 213. The insulating soft body 213 covers the outside of the cables 211 and deformable members 212. The cables 211 pass through the insulating soft body 213 to achieve an electrical connection between the first earphone body 100 and the second earphone body 300. Similarly, the deformable members 212 also pass through the insulating soft body 213 to achieve a physical connection between the first earphone body 100 and the second earphone body 300. It can be understood that the insulating soft body 213 is the main body of the flexible connecting arm 200, and the cables 211 and deformable members 212 are located inside the insulating soft body 213.

[0127] In this embodiment, the insulating soft body 213 is a cylindrical body with a circular cross-section. The insulating soft body 213 can be made of insulating rubber, which can physically support the cable 211 and the deformable part 212, protect the cable 211 and the deformable part 212 from external physical damage, and insulate the cable 211 from the outside world; at the same time, the insulating soft body 213 is the outside of the flexible connecting arm 200 and comes into contact with the user's ear. Compared with plastic materials, it will not cause excessive pressure on the ear, thus improving comfort.

[0128] The deformable component 212 can be a deformable metal material, specifically a metal strip. It can also be an elastic metal or other material. In one embodiment, perforations for the deformable component 212 and the cable 211 are pre-drilled during the formation of the insulating flexible body 213. These perforations extend through the insulating flexible body 213 along its length. After the insulating flexible body 213 is formed, the deformable component 212 and the cable 211 are passed through the perforations, with both ends of the deformable component 212 and the cable 211 extending beyond both ends of the insulating flexible body 213.

[0129] Please refer to the following: Figure 7 and Figure 8 , Figure 7 yes Figure 6 The schematic diagram of the second outer casing 170 shown is as follows. Figure 8 yes Figure 6 The diagram shows the structure of the fourth outer shell 390.

[0130] In this embodiment, the first limiting part 240 and the second limiting part 250 are respectively sleeved on the opposite ends of the flexible connecting arm 200, namely the first end 220 and the second end 230. The cable 211 and the deformable member 212 can pass through the first limiting part 240 and the second limiting part 250. The materials of the first limiting part 240 and the second limiting part 250 can be the same as or different from the material of the insulating soft body 213. The hardness of the first limiting part 240 and the second limiting part 250 is greater than or equal to the hardness of the insulating soft body 213. The first limiting part 240 and the second limiting part 250 can be integrally formed with the insulating soft body 213 by injection molding, or they can be fixed to the outer peripheral surfaces of the first end 220 and the second end 230 of the flexible connecting arm 200 by bonding or welding.

[0131] The first limiting portion 240 is generally an annular block, and includes a first through hole. The outer diameter of the first limiting portion 240 is larger than the outer diameter of the insulating flexible body 213. The first through hole is used to accommodate the first end 220 of the flexible connecting arm 200 and is fixedly connected to the first end 220. A first protrusion 241 is provided on the outer peripheral surface of the first limiting portion 240, and the first protrusion 241 protrudes from the outer peripheral surface of the first limiting portion 240 in a direction away from the first limiting portion 240.

[0132] The second limiting portion 250 has the same structure as the first limiting portion 240, and includes a second through hole. The outer circumferential diameter of the second limiting portion 250 is larger than the outer circumferential diameter of the insulating flexible body 213. The second through hole is used to accommodate the second end 230 of the flexible connecting arm 200 and is fixedly connected to the second end 230. A second protrusion 251 is provided on the outer circumferential surface of the second limiting portion 250, and the second protrusion 251 protrudes from the outer circumferential surface of the second limiting portion 250 in a direction away from the second limiting portion 250.

[0133] A first limiting groove 411 is provided on the second inner surface 171 of the second outer shell 170, and the peripheral wall of the first limiting groove 411 protrudes from the second inner surface 171. The first limiting groove 411 is generally cylindrical and matches the shape of the first limiting part 240. The first limiting groove 411 includes a first groove peripheral wall 412 and a first bottom wall 413, and the first groove peripheral wall 412 surrounds the periphery of the first bottom wall 413 in an annular shape. A first mounting hole 414 is provided on the first bottom wall 413, and the first mounting hole 414 penetrates the first bottom wall 413 and the second outer shell 170, that is, it penetrates the second outer peripheral surface 173. The diameter of the first mounting hole 414 is greater than or equal to the diameter of the flexible connecting arm 200 and smaller than the outer peripheral diameter of the first limiting part 240.

[0134] A first groove 415 is recessed on the peripheral wall 412 of the first groove, and the shape of the first groove 415 is adapted to the first protrusion 241. In this embodiment, the first groove 415 is recessed from the peripheral wall 412 of the first groove away from the center of the first limiting groove 411; and the length direction of the first groove 415 extends along the axial direction (Y-axis direction) of the first limiting groove 411 toward the second inner surface 171. One end of the first groove 415 is an open end, which penetrates the end face of the peripheral wall 412 of the first groove away from the second inner surface 171.

[0135] A first protruding plate 416 is provided on the end face of the first groove peripheral wall 412 facing away from the second inner side surface 171. The first protruding plate 416 is located at the side of the opening end of the first slot 415. The first protruding plate 416 includes a first top surface 417. The first top surface 417 is located on the side of the first protruding plate 416 away from the second inner side surface 171 and is disposed opposite to the second inner side surface 171. The first protruding plate 416 is also provided with a first opening groove 418, which is recessed from the first top surface 417 in the negative Y-axis direction. The first protruding plate 416 and the first opening groove 418 pass through the first protruding plate 416 approximately along the radial direction of the first limiting groove 411. The first opening groove 418 communicates with the first slot 415 and is used for limiting the deformable part 212. It can be understood that the first protruding plate 416 is part of the groove wall of the first slot 415.

[0136] like Figure 8 As shown, a second limiting groove 421 is recessed on the fourth inner surface 391 of the fourth outer shell 390, and the second limiting groove 421 is recessed from the fourth inner surface 391 in the negative Y-axis direction. The second limiting groove 421 is approximately circular and matches the shape of the second limiting part 250. The second limiting groove 421 includes a second groove peripheral wall 422 and a second bottom wall 423, and the second groove peripheral wall 422 surrounds the periphery of the second bottom wall 423 in an annular shape. A second mounting hole 424 is also provided on the second bottom wall 423, which penetrates the second bottom wall 423 and the fourth outer shell 390, that is, it penetrates the fourth outer peripheral surface 393. The diameter of the second mounting hole 424 is greater than or equal to the diameter of the flexible connecting arm 200 of the insulating soft body 213 and smaller than the outer peripheral diameter of the second limiting part 250. A second slot 425 is provided on the peripheral wall 422 of the second groove. The second slot 425 is recessed from the peripheral wall 422 of the second groove in a radial direction away from the second limiting groove 421, and passes through the fourth inner side surface 391 along the opening of the second limiting groove 421. The shape of the second slot 425 is adapted to the second protrusion 251.

[0137] A second protrusion 426 is provided on the fourth inner surface 391. The second protrusion 426 is located on one side of the second limiting groove 421 and protrudes from the fourth inner surface 391 in the positive Y-axis direction. The second protrusion 426 includes a second top surface 427. The second top surface 427 is located on the side of the second protrusion 426 away from the fourth inner surface 391 and is disposed opposite to the fourth inner surface 391. A second opening groove 428 is provided on the second protrusion 426 and penetrates the second protrusion 426 along the X-direction. It can be understood that the second opening groove 428 penetrates the second protrusion 426 approximately along the radial direction of the second limiting groove 421. The shape of the second opening groove 428 is adapted to the deformable part 212.

[0138] Please refer to the following: Figures 9A to 10 , Figure 9A , Figure 9B , Figure 9C and Figure 9D yes Figure 6 The assembly steps of the first embodiment shown are illustrated. Figure 10 yes Figure 6 The diagram shows the internal structure of a portion of the structure in the first embodiment.

[0139] like Figure 9A As shown, several cables 211 are located within the insulating flexible body 213, and the flexible connecting arm 200 is approximately in a straight line. First, the second limiting part 250 is passed through the insulating flexible body 213 and bonded or welded to the second end 230 of the insulating flexible body 213; then, the fourth outer shell 390, the second outer shell 170, and the first limiting part 240 are sequentially inserted into the insulating flexible body 213 from the end away from the second limiting part 250, and the first limiting part 240 is bonded or welded to the first end 210 of the insulating flexible body 213, as shown. Figure 9B As shown. Figure 9C This is the state after the flexible connecting arm 200 is connected to the second housing 170 and the fourth housing 390. The first limiting part 240 and the second housing 170 can form an assembly relationship; the second limiting part 250 and the fourth housing 390 can form an assembly relationship. Then, a cable 211 inside the insulating flexible body 213 is pulled out, leaving an elongated hole, and then... Figure 9D The U-shaped deformable part 212 shown is inserted through the elongated hole inside the insulating flexible body 213. After the deformable part 212 is inserted, the shape of the entire flexible connecting arm 200 is fixed by the deformable part 212, so that the flexible connecting arm 200 is fixedly connected between the second outer shell 170 and the fourth outer shell 390, and the general shape of the earphone 1000 is completed. The specific assembly relationship is as follows:

[0140] When assembling the flexible connecting arm 200 with the second housing 170, the flexible connecting arm 200 is first passed through the first mounting hole 414 along the negative Y-axis direction. Since the diameter of the first mounting hole 414 is larger than the diameter of the flexible connecting arm 200 and smaller than the outer circumferential diameter of the first limiting portion 240, the flexible connecting arm 200 can pass through the first mounting hole 414, but the first limiting portion 240 at the end of the flexible connecting arm 200 cannot pass through the first mounting hole 414. Figure 10 Because the shape of the first limiting groove 411 matches the shape of the first limiting part 240, and the shape of the first slot 415 matches the shape of the first protrusion 241, the first limiting part 240 can be installed in the first limiting groove 411 during assembly, and the first protrusion 241 on the outer periphery of the first limiting part 240 can be installed in the first slot 415 and held in place to prevent the first limiting part 240 from rotating axially relative to the first limiting groove 411. Specifically, the first bottom wall 413 of the first limiting groove 411 is opposite to the end face of the first limiting part 240, which can restrict the translational movement of the flexible connecting arm 200 along the negative Y-axis; the first groove peripheral wall 412 of the first limiting groove 411 is opposite to the peripheral surface of the first limiting part 240, which can restrict the translational movement of the flexible connecting arm 200 along the X-axis and Z-axis; the first slot 415 accommodates the first protrusion 241, which can restrict the rotational movement of the flexible connecting arm 200 around the Y-axis.

[0141] Furthermore, after assembling the flexible connecting arm 200 with the second housing 170, a force perpendicular to the Y-axis is applied to the portion of the deformable member 212 protruding from the first limiting portion 240, causing the end of the deformable member 212 to bend and engage with the first opening slot 418, and to be held in place by the first protrusion 241. The first opening slot 418 can restrict the rotational movement of the deformable member 212 around the Y-axis. In the positive Y-axis direction, structures such as the first flexible circuit board 180 or the speaker 140 located in the first cavity can press and position the flexible connecting arm 200, thereby achieving relative limitation of the flexible connecting arm 200 relative to the first earphone body.

[0142] Therefore, through the assembly of the first limiting part 240 with the first limiting groove 411 and the assembly of the end of the deformable part 212 with the first opening groove 418, the flexible connecting arm 200 and the second outer shell 170 can form a firm and stable physical connection. Then the first outer shell 110 and the second outer shell 170 are docked and fixed.

[0143] When assembling the flexible connecting arm 200 with the fourth housing 390, the flexible connecting arm 200 is first passed through the second mounting hole 424 along the negative Y-axis direction. Since the diameter of the second mounting hole 424 is larger than the diameter of the flexible connecting arm 200 but smaller than the outer circumferential diameter of the second limiting portion 250, the flexible connecting arm 200 can pass through the second mounting hole 424. However, the second limiting portion 250 at the end of the flexible connecting arm 200 cannot pass through the second mounting hole 424. Because the shape of the second limiting groove 421 matches that of the second limiting portion 250, and the shape of the second slot 425 matches that of the second protrusion 251, the second limiting portion 250 can be installed in the second limiting groove 421 during assembly, and the second protrusion 251 on the outer circumference of the second limiting portion 250 can be installed in the second slot 425. Specifically, the second bottom wall 423 of the second limiting groove 421 is opposite to the end face of the second limiting part 250, which can restrict the translational movement of the flexible connecting arm 200 along the negative Y-axis; the second groove peripheral wall 422 of the second limiting groove 421 is opposite to the peripheral surface of the second limiting part 250, which can restrict the translational movement of the flexible connecting arm 200 along the X-axis and Z-axis; the second slot 425 accommodates the second protrusion 251, which can restrict the rotational movement of the flexible connecting arm 200 around the Y-axis.

[0144] Furthermore, after the flexible connecting arm 200 and the fourth housing 390 are assembled, a force perpendicular to the Y-axis is applied to the portion of the deformable member 212 protruding from the second limiting part 250, causing the end of the deformable member 212 to bend and be installed in the second opening slot 428 and held in place by the second protrusion 251. The second opening slot 428 can restrict the rotational movement of the deformable member 212 around the Y-axis. In the positive Y-axis direction, structures such as the motherboard 340 or battery 360 located in the second cavity can press and position the flexible connecting arm 200, thereby achieving relative limitation of the flexible connecting arm 200 relative to the second earphone body.

[0145] Therefore, through the assembly of the second limiting part 250 with the second limiting groove 421 and the assembly of the end of the deformable part 212 with the second opening groove 428, the flexible connecting arm 200 and the fourth housing 390 can form a firm and stable connection.

[0146] On the other hand, after the cable 211 in the flexible connecting arm 200 is exposed at the end face of the flexible connecting arm 200, it will be electrically connected to the circuit board of the earphone, forming a stable circuit connection between the second housing 170 and the fourth housing 390.

[0147] Please refer to the following: Figures 11 to 13 , Figure 11 This is a partial exploded view of the structure of the second embodiment provided in this application. Figure 12 yes Figure 11 The diagram shown is a structural schematic of the first limiting part 260. Figure 13 yes Figure 11The diagram shows the structure of the second limiting part 270.

[0148] In this embodiment, the differences from the first embodiment are the changes in the structure of the first limiting part 260 and the second limiting part 270, the structure of the first end 220 and the second end 230 of the flexible connecting arm 200, and the corresponding structure of the first limiting groove 411 and the second limiting groove 421. Please refer to the accompanying drawings and detailed description for specific details.

[0149] In this embodiment, the first limiting portion 260 and the second limiting portion 270 are respectively disposed at opposite ends (first end 220 and second end 230) of the flexible connecting arm 200. The materials of the first limiting portion 260 and the second limiting portion 270 can be the same as or different from the material of the insulating soft body 213, and the hardness of the first limiting portion 260 and the second limiting portion 270 is greater than or equal to the hardness of the insulating soft body 213. The first limiting portion 260 and the second limiting portion 270 can be integrally formed with the insulating soft body 213 by injection molding, or they can be fixed to the ends of the flexible connecting arm 200 by bonding or welding.

[0150] Please see Figure 12 The first limiting part 260 includes a first insertion segment 261, a first frustum 262, and a first embedding segment 263. The first insertion segment 261 and the first embedding segment 263 are disposed opposite to each other, and the two ends of the first frustum 262 in the circumferential direction are respectively connected to the first insertion segment 261 and the first embedding segment 263. That is, along the Y-axis direction, the first insertion segment 261, the first frustum 262, and the first embedding segment 263 are connected sequentially.

[0151] The first insertion segment 261 is generally rectangular in shape. The first insertion segment 261 includes a first surface 264 and a second surface 265. In the X direction, the first surface 264 and the second surface 265 are arranged opposite to each other, and both the first surface 264 and the second surface 265 are perpendicular to the end face of the first frustum 262 and connected to the end face.

[0152] The first insertion segment 261 includes two opposing first protrusions 266, which are respectively disposed on the first surface 264 and the second surface 265, and protrude in a direction away from the first insertion segment 261. The two first protrusions 266 are located on the side of the first surface 264 and the second surface 265 away from the end face of the first frustum 262. The first protrusions 266 are wedge-shaped, and their size gradually decreases along the positive direction of the Y-axis. In effect, the side of the first protrusion 266 facing away from the first frustum 262 forms an inclined surface.

[0153] The first embedding segment 263 is generally truncated cone-shaped, including a first conical segment 268. The first conical segment 268 is located at the end of the first embedding segment 263 away from the first frustum 262, and its radius gradually decreases along the axial direction of the first embedding segment 263 in a direction away from the first frustum 262 (the negative direction of the Y-axis). A first annular groove 269 is also provided on the circumferential surface of the first embedding segment 263. The first annular groove 269 is recessed from the circumferential surface of the first embedding segment 263 toward the central axis of the first embedding segment 263, and the first annular groove 269 can extend along the axial direction of the first embedding segment 263 toward the first frustum 262 (the positive direction of the Y-axis).

[0154] The first limiting part 260 is also provided with a first connecting channel 260A, which passes sequentially through the first insertion section 261, the first frustum 262, and the first embedding section 263 along the Y-axis direction. It can be understood that the first connecting channel 260A penetrates the first limiting part 260 in the Y-axis direction, passing through the two opposite end faces of the first limiting part 260. The first connecting channel 260A extends in a direction perpendicular to the Y-axis, extending to the outer peripheral surface of the first insertion section 261, the outer peripheral surface of the first frustum 262, and the outer peripheral surface of the first embedding section 263.

[0155] See Figure 13 The second limiting part 270 has the same structure as the first limiting part 260, and is disposed opposite to the first limiting part 260 at the other end of the flexible connecting arm 200.

[0156] In the second embodiment, the second limiting part 270 includes a second insertion section 271, a second frustum 272, and a second embedding section 273. The second insertion section 271 and the second embedding section 273 are disposed opposite to each other, and the two ends of the second frustum 272 in the circumferential direction are respectively connected to the second insertion section 271 and the second embedding section 273. That is, along the Y-axis direction, the second insertion section 271, the second frustum 272, and the second embedding section 273 are connected sequentially.

[0157] The second insertion segment 271 is generally rectangular in shape. The second insertion segment 271 includes a third surface 274 and a fourth surface 275. In the X direction, the third surface 274 and the fourth surface 275 are positioned opposite each other, both perpendicular to and connected to the end face of the second frustum 272. The second insertion segment 271 includes two oppositely positioned second protrusions 276, which are respectively located on the third surface 274 and the fourth surface 275 and protrude away from the second insertion segment 271. The two second protrusions 276 are located on the side of the third surface 274 and the fourth surface 275 away from the end face of the second frustum 272. The second protrusions 276 are wedge-shaped, and their size gradually decreases along the positive Y-axis direction. In effect, the side of the second protrusion 276 facing away from the second frustum 272 forms an inclined surface.

[0158] The second embedding section 273 protrudes from the other end face of the second frustum 272 and is positioned opposite to the second insertion section 271. The second embedding section 273 is generally frustum-shaped, including a second conical section 278. The second conical section 278 is located at the end of the second embedding section 273 away from the second frustum 272, and its radius gradually decreases along the axial direction of the second embedding section 273 in a direction away from the second frustum 272 (the negative direction of the Y-axis). A second annular groove 279 is also provided on the circumferential surface of the second embedding section 273. The second annular groove 279 is recessed from the circumferential surface of the second embedding section 273 toward the central axis of the second embedding section 273, and the second annular groove 279 can extend along the axial direction of the second embedding section 273 toward the second frustum 272 (the positive direction of the Y-axis).

[0159] The second limiting part 270 is also provided with a second connecting channel 270A, which passes sequentially through the second insertion section 271, the second frustum 272, and the second embedding section 273 along the Y-axis direction. It can be understood that the second connecting channel 270A penetrates the second limiting part 270 in the Y-axis direction, passing through the two opposite end faces of the second limiting part 270. The second connecting channel 270A can extend in a direction perpendicular to the Y-axis. Extending in a direction perpendicular to the Y-axis, the second connecting channel 270A extends to the outer peripheral surface of the second insertion section 271, the outer peripheral surface of the second frustum 272, and the outer peripheral surface of the second embedding section 273.

[0160] The first end 220 of the flexible connecting arm 200 is provided with a first recess 221 and a first locking block 222. The first recess 221 is located in the middle of the first end 220, with its opening side facing away from the end face of the first end 220. A first locking platform 223 protrudes from the inner circumference of the first recess 221. The first locking block 222 protrudes from one side of the first recess 221. When the first limiting part 260 is inserted into the first end 220, the end of the first embedding section 263 facing away from the first truncated cone 262 is inserted into the first recess 221, and the first locking platform 223 is engaged with the first annular groove 269 of the first limiting part 260. The first locking block 222 and the cable 211 passing through the first recess 221 are inserted into the first connecting channel 260A, and the first locking block 222 is engaged with the first connecting channel 260A after being inserted into the first connecting channel 260A.

[0161] The second end 230 of the flexible connecting arm 200 is provided with a second recess 231 and a second locking block 232. The second recess 231 is located in the middle of the second end 230, with its opening side facing away from the end face of the second end 230. A second locking platform 233 protrudes from the inner circumference of the second recess 231. The second locking block 232 protrudes from one side of the second recess 231. When the second limiting part 270 is inserted into the second end 230, the end of the second embedding section 273 facing away from the second frustum 272 is inserted into the second recess 231, and the second locking platform 233 is engaged with the second annular groove 279 of the second limiting part 270. The second locking block 232 and the cable 211 passing through the second recess 231 are inserted into the second connecting channel 270A, and the second locking block 232 is engaged with the second connecting channel 270A after insertion.

[0162] like Figure 11 Unlike the first embodiment, the first groove peripheral wall 434 of the first limiting groove of the second outer shell 170 omits the first protrusion. The inner side of the first groove peripheral wall 434 is provided with a first abutment 431 and a second abutment 432.

[0163] In this embodiment, the diameter of the first mounting hole 430 provided on the first bottom wall of the first limiting groove is large enough to allow the first limiting part 260 to pass through and confine the first limiting part 260 within the first limiting groove. It can be understood that the first bottom wall of the first limiting groove can be completely eliminated, and the first mounting hole 430 can be directly formed on the second outer shell 170, with the first groove peripheral wall 434 surrounding the first mounting hole 430. The first abutment 431 protrudes from the first groove peripheral wall 434 toward the central axis of the first mounting hole 430; the second abutment 432 is arranged parallel to the first abutment 431, and protrudes from the first groove peripheral wall toward the central axis of the first mounting hole 430. Both the first abutment 431 and the second abutment 432 are wedge-shaped structures, and their dimensions gradually decrease along the positive direction of the Y-axis, facilitating installation with the first limiting part 260.

[0164] The second groove peripheral wall 444 of the second limiting groove of the fourth outer shell 390 eliminates the second protrusion 426. The inner side of the second groove peripheral wall 444 is provided with a third support 441 and a fourth support 442.

[0165] In this embodiment, the diameter of the second mounting hole 440 provided on the second bottom wall of the second limiting groove is large enough for the second limiting part 270 to pass through and to confine the second limiting part 270 within the second limiting groove. It can be understood that the second bottom wall of the second limiting groove can be completely eliminated, and the second mounting hole 440 can be directly formed on the fourth outer shell 390, with the second groove peripheral wall 444 surrounding the second mounting hole 440. The third abutment 441 protrudes from the second groove peripheral wall 444 toward the central axis of the second mounting hole 440; the fourth abutment 442 is arranged parallel to the third abutment 441, and protrudes from the second groove peripheral wall toward the central axis of the second mounting hole 440. Both the third abutment 441 and the fourth abutment 442 are wedge-shaped structures, and their dimensions gradually decrease along the positive direction of the Y-axis, facilitating installation with the second limiting part 270.

[0166] Please refer to the following: Figures 14A to 15 , Figure 14A , Figure 14B , Figure 14C , Figure 14D , Figure 14E yes Figure 11 The diagram shows the assembly steps of the second embodiment of the headphones. Figure 15 yes Figure 11 A schematic diagram of the internal structure of the second embodiment of the earphone 1000 shown.

[0167] like Figure 14A As shown, firstly, the two cable segments 211A are detachably and fixedly connected to both ends of the U-shaped deformable member 212. Then, a force perpendicular to the Y-axis is applied to both ends of the deformable member 212, causing the two ends of the deformable member 212 to bend approximately 90° relative to the Y-axis. Figure 14B As shown, the combination of two cable segments 211A and the U-shaped deformable part 212 is then placed into the injection mold to form the first limiting part 260 and the second limiting part 270. Next, the two cable segments 211A are pulled out from the first limiting part 260 and the second limiting part 270 respectively, leaving the first connecting channel and the second connecting channel. The cable 211A is inserted into the first connecting channel of the first limiting part 260 and then exits through the second connecting channel of the second limiting part 270. The assembled state is as shown. Figure 14C As shown. The cable 211 and the deformable part 212 can be placed side by side, or the cable 211 can be wound around the deformable part 212 in a spiral shape.

[0168] Furthermore, such as Figure 14DAs shown, an insulating flexible material 213 is formed on the outside of the cable 211 and the deformed part 212, between the first limiting part 260 and the second limiting part 270, using an injection mold. The insulating flexible material 213 can be made of the same material as the first limiting part 260 and the second limiting part 270, or it can be made of a different material. Finally, as... Figure 14E The flexible connecting arm 200 is then manufactured by cutting off the two ends of the deformable part 212 that extend beyond the first limiting part 260 and the second limiting part 270.

[0169] At this point, at both ends of the insulating soft body 213, at the connection points with the first limiting part 260 and the second limiting part 270, the insulating soft body 213 can form a snap-fit ​​relationship with the first limiting part 260 and the second limiting part 270. Furthermore, the insulating soft body 213 can undergo a certain degree of elastic deformation, allowing the snap-fit ​​relationship between the insulating soft body 213 and the first limiting part 260 and the second limiting part 270 to be released by widening the port. Therefore, when subsequent parts need to be replaced or repaired, the first limiting part 260 or the second limiting part 270 can be easily separated from the insulating soft body 213. When it is necessary to reinstall the first limiting part 260 or the second limiting part 270 into the insulating soft body 213, the first insert segment 263 or the second insert segment 273 can be directly inserted, forming a snap-fit ​​relationship between the first limiting part 260 or the second limiting part 270 and the insulating soft body 213, greatly facilitating the restoration work after parts repair or replacement.

[0170] Furthermore, the first limiting portion 260 of the flexible connecting arm 200 can form a snap-fit ​​engagement with the second housing 170, and the second limiting portion 270 of the flexible connecting arm 200 can form a snap-fit ​​engagement with the fourth housing 390, so that the flexible connecting arm 200 can be fixedly connected between the second housing 170 and the fourth housing 390. The specific assembly relationship is as follows:

[0171] When assembling the flexible connecting arm 200 with the second housing 170, the first limiting part 260 can be directly inserted into the first mounting hole 430 of the second housing 170 from the outside. When the first insertion segment 261 is inserted, the two first protrusions 266 respectively engage with the first abutment 431 and the second abutment 432. Since the size of the first protrusion 266 gradually decreases in the positive direction along the Y-axis (i.e., the first protrusion 266 has a beveled design), and the size of the first abutment 431 and the second abutment 432 gradually increases in the positive direction along the Y-axis (beveled design), the first insertion segment 261 can be inserted into the first mounting hole 430 relatively easily after applying a certain force. After the first insertion segment 261 is inserted, in the Y-axis direction, the first abutment 431 and the second abutment 432 can respectively engage with the two first protrusions 266. Therefore, at this time, the first abutment 431 and the second abutment 432 can restrict the translational movement of the flexible connecting arm 200 in the negative direction of the Y-axis. At the same time, the first abutment 431 and the second abutment 432 can also abut with the first frustum 262, restricting the translational movement of the flexible connecting arm 200 in the positive direction of the Y-axis. Therefore, the first limiting part 260 and the first outer shell form a snap-fit ​​and slot-fit relationship, and the first abutment 431 and the second abutment 432 can restrict the translational movement of the flexible connecting arm 200 in the Y-axis direction. Furthermore, the wall of the first mounting hole 430 faces the side of the first insertion section 261, which can restrict the translational movement of the flexible connecting arm 200 along the X-axis and Z-axis directions; the first abutment 431 and the second abutment 432 can restrict the rotational movement of the flexible connecting arm 200 about the Y-axis. Additionally, since the end of the deformable member 212 is bent at approximately 90° relative to the Y-axis, and the bent portion of the U-shaped deformable member end is fixed by the first limiting portion 260, the translational movement of the deformable member 212 along the X-axis, Y-axis, and Z-axis, as well as its rotational movement along the Y-axis, are all restricted by the first limiting portion 260. Therefore, through the assembly of the first limiting portion 260 and the first mounting hole 430, a firm and stable connection can be formed between the flexible connecting arm 200 and the second housing 170.

[0172] When assembling the flexible connecting arm 200 with the fourth housing 390, the second limiting part 270 can be directly inserted into the second mounting hole 440 of the fourth housing 390 from the outside. When the second insertion segment 271 is inserted, the two second protrusions 276 respectively engage with the third abutment 441 and the fourth abutment 442. Since the size of the second protrusion 276 gradually decreases in the positive direction along the Y-axis, and the size of the third abutment 441 and the fourth abutment 442 gradually increases in the positive direction along the Y-axis, the second insertion segment 271 can be easily inserted into the second mounting hole 440 after applying a certain force. After the second insertion segment 271 is inserted, the third abutment 441 and the fourth abutment 442 can engage with the two second protrusions 276 respectively in the Y-axis direction. Therefore, the third abutment 441 and the fourth abutment 442 can restrict the translational movement of the flexible connecting arm 200 in the negative direction along the Y-axis. Simultaneously, the third abutment 441 and the fourth abutment 442 can also abut against the second frustum 272, restricting the translational movement of the flexible connecting arm 200 along the negative direction of the Y-axis. Therefore, the second limiting part 270 and the fourth outer shell 390 form a snap-fit ​​and slot-fit relationship, and the third abutment 441 and the fourth abutment 442 can restrict the translational movement of the flexible connecting arm 200 along the Y-axis. In addition, the hole wall of the second mounting hole 440 is opposite to the circumferential surface of the second insertion section 271, which can restrict the translational movement of the flexible connecting arm 200 along the X-axis and Z-axis; the third abutment 441 and the fourth abutment 442 can restrict the rotational movement of the flexible connecting arm 200 around the Y-axis. In addition, since the end of the deformable member 212 is bent at approximately 90° relative to the Y-axis, and the bent portion of the end of the U-shaped deformable member 212 is fixed by the second limiting part 270. Therefore, the translational movement of the deformable member 212 along the X, Y, and Z axes, as well as its rotational movement along the Y axis, are all restricted by the second limiting part 270. Thus, through the assembly of the second limiting part 270 with the second mounting hole 440, the flexible connecting arm 200 and the fourth housing 390 can form a firm and stable connection.

[0173] On the other hand, after the end faces of the first limiting part 260 and the second limiting part 270 are exposed, the cable 211 in the flexible connecting arm 200 will be connected to the circuit boards inside the second housing 170 and the fourth housing 390 respectively, forming a stable circuit connection between the second housing 170 and the fourth housing 390.

[0174] Please refer to the following: Figures 16 to 18 , Figure 16 This is a partially exploded structural diagram of the third embodiment of the earphone 1000 provided in this application. Figure 17 yes Figure 16 The schematic diagram of the second outer casing 170 shown is as follows. Figure 18 yes Figure 16The diagram shows the structure of the fourth outer shell 390.

[0175] In this embodiment, the difference from the first embodiment is that the first limiting part 280 and the second limiting part 290 are respectively provided at opposite ends of the deformable member 212. The materials of the first limiting part 280 and the second limiting part 290 can be the same as or different from the material of the deformable member 212. The first limiting part 280 and the second limiting part 290 can be fixed to the end faces of both ends of the deformable member 212 by bonding or welding.

[0176] In this embodiment, the first limiting portion 280 is generally a circular sheet, and its outer diameter is larger than that of the flexible connecting arm 200. A first protrusion 281 is provided on the outer peripheral surface of the first limiting portion 280. The first protrusion 281 protrudes from the outer peripheral surface of the first limiting portion 280 in a direction away from the first limiting portion 280 (extending radially along the first limiting portion 280). A third connecting channel 282 is provided on the first limiting portion 280, penetrating the first limiting portion 280 axially and radially through its outer peripheral surface. The third connecting channel 282 is offset from the first protrusion 281.

[0177] In this embodiment, the second limiting portion 290 is generally a circular sheet, with the same structure as the first limiting portion 280. The outer diameter of the second limiting portion 290 is larger than the outer diameter of the flexible connecting arm 200. A second protrusion 291 is provided on the outer peripheral surface of the second limiting portion 290. The second protrusion 291 protrudes from the outer peripheral surface of the second limiting portion 290 in a direction away from the second limiting portion 290 (extending radially along the second limiting portion 290). A fourth connecting channel 292 is provided on the second limiting portion 290. The fourth connecting channel 292 penetrates the second limiting portion 290 axially and radially through its outer peripheral surface. The fourth connecting channel 292 is offset from the second protrusion 291.

[0178] like Figure 17As shown, a first limiting groove 451 is provided on the second inner surface 171 of the second outer shell 170, and the groove peripheral wall of the first limiting groove 451 protrudes from the second inner surface 171. The first limiting groove 451 is generally cylindrical and matches the shape of the first limiting part 280. The first limiting groove 451 includes a first groove peripheral wall 452 and a first bottom wall 453, and the first groove peripheral wall 452 surrounds the periphery of the first bottom wall 453 in an annular shape. A first mounting hole 454 is provided on the first bottom wall 453, which penetrates the first bottom wall 453 and the second outer shell 170, that is, it penetrates the second outer peripheral surface 173. The diameter of the first mounting hole 454 is greater than or equal to the diameter of the flexible connecting arm 200 and smaller than the outer peripheral diameter of the first limiting part 280. A first retaining groove 455 is recessed on the first groove peripheral wall 452, and the shape of the first retaining groove 455 matches the first protrusion 281. In this embodiment, the first slot 455 is recessed from the peripheral wall 452 of the first slot away from the center of the first limiting slot 451; and the length direction of the first slot 455 extends along the axial direction (Y-axis direction) of the first limiting slot 451 toward the second inner side surface 171. One end of the first slot 455 is an open end, which penetrates the end face of the peripheral wall 452 of the first slot away from the second inner side surface 171.

[0179] like Figure 18 As shown, a second limiting groove 461 is recessed on the fourth inner surface 391 of the fourth outer shell 390, and the second limiting groove 461 is recessed from the fourth inner surface 391 in the negative Y-axis direction. The second limiting groove 461 is approximately circular and matches the shape of the second limiting part 290. The second limiting groove 461 includes a second groove peripheral wall 462 and a second bottom wall 463, and the second groove peripheral wall 462 surrounds the periphery of the second bottom wall 463 in an annular shape. A second mounting hole 464 is also provided on the second bottom wall 463, which penetrates the second bottom wall 463 and the fourth outer shell 390, that is, it penetrates the fourth outer peripheral surface 393. The diameter of the second mounting hole 464 is greater than or equal to the diameter of the flexible connecting arm 200 and smaller than the outer peripheral diameter of the second limiting part 290. A second slot 465 is provided on the peripheral wall 462 of the second groove. The second slot 465 is recessed from the peripheral wall 462 of the second groove in a radial direction away from the second limiting groove 461, and passes through the fourth inner side surface 391 along the opening of the second limiting groove 461. The shape of the second slot 465 is adapted to the second protrusion 291.

[0180] Please refer to the following: Figure 19 , Figure 19 yes Figure 16 This is a schematic diagram of the internal structure of a third embodiment of the earphone 1000 shown.

[0181] The assembly steps in this embodiment are largely the same as in the first embodiment. First, the fourth outer shell 390 and the second outer shell 170 are sequentially inserted into the insulating flexible body 213 from one end. Several cables 211 are located in the insulating flexible body 213. At this time, one cable 211 is pulled out from the insulating flexible body 213, leaving an elongated hole. Then, the U-shaped deformable part 212 is inserted along the elongated hole in the insulating flexible body 213. After the deformable part 212 is inserted, the shape of the entire flexible connecting arm 200 is fixed by the deformable part 212. Finally, the first limiting part 280 is fixedly installed on one end of the deformable part 212. The installation method can be bonding or welding. At this time, the first limiting part 280 and the second outer shell 170 can form an assembly relationship. The second limiting part 290 is fixedly installed on the other end of the deformable part 212. The installation method can be bonding or welding. At this time, the second limiting part 290 and the fourth outer shell 390 can form an assembly relationship. At this point, the flexible connecting arm 200 is fixedly connected between the second outer shell 170 and the fourth outer shell 390, and the basic shape of the earphone 1000 is complete. The specific assembly relationship is as follows:

[0182] When assembling the flexible connecting arm 200 with the second housing 170, the flexible connecting arm 200 is first passed through the first mounting hole 454 along the negative direction of the Y-axis. Since the diameter of the first mounting hole 454 is larger than the diameter of the flexible connecting arm 200 and smaller than the outer circumferential diameter of the first limiting portion 280, the flexible connecting arm 200 can pass through the first mounting hole 454. However, the first limiting portion 280 at the end of the flexible connecting arm 200 cannot pass through the first mounting hole 454. Because the shape of the first limiting groove 451 matches that of the first limiting portion 280, the first limiting portion 280 can be installed in the first limiting groove 451 during assembly. The shape of the first slot 455 matches that of the first protrusion 281, so the first protrusion 281 on the outer circumference of the first limiting portion 280 can be installed in the first slot 455. Specifically, the first bottom wall 453 of the first limiting groove 451 is opposite to the end face of the first limiting part 280, which can restrict the translational movement of the flexible connecting arm 200 along the negative direction of the Y-axis; the first groove peripheral wall 452 of the first limiting groove 451 is opposite to the peripheral surface of the first limiting part 280, which can restrict the translational movement of the flexible connecting arm 200 along the X-axis and Z-axis; the first slot 455 can accommodate the first protrusion 281, restricting the rotational movement of the flexible connecting arm 200 around the Y-axis. In addition, at this time, one end of the cable 211 inside the flexible connecting arm 200 passes through the first limiting part 280 from the third connecting channel 282, realizing electrical connection with the electronic devices in the first cavity.

[0183] Therefore, through the assembly of the first limiting part 280 and the first limiting groove 451, the flexible connecting arm 200 and the second housing 170 can form a firm and stable physical connection.

[0184] When assembling the flexible connecting arm 200 with the fourth housing 390, the flexible connecting arm 200 is first passed through the second mounting hole 464 in the negative direction of the Y-axis. Since the diameter of the second mounting hole 464 is larger than the diameter of the flexible connecting arm 200 but smaller than the outer circumferential diameter of the second limiting portion 290, the flexible connecting arm 200 can pass through the second mounting hole 464. However, the second limiting portion 290 at the end of the flexible connecting arm 200 cannot pass through the second mounting hole 464. Because the shape of the second limiting groove 461 matches that of the second limiting portion 290, the second limiting portion 290 will be installed in the second limiting groove 461 during assembly; the shape of the second slot 465 matches that of the second protrusion 291, so the second protrusion 291 on the outer circumference of the second limiting portion 290 will be installed in the second slot 465. Specifically, the second bottom wall 463 of the second limiting groove 461 is opposite to the end face of the second limiting part 290, which can restrict the translational movement of the flexible connecting arm 200 along the negative direction of the Y-axis; the second groove peripheral wall 462 of the second limiting groove 461 is opposite to the peripheral surface of the second limiting part 290, which can restrict the translational movement of the flexible connecting arm 200 along the X-axis and Z-axis; the second slot 465 can accommodate the second protrusion 291, restricting the rotational movement of the flexible connecting arm 200 around the Y-axis. In addition, at this time, one end of the cable 211 inside the flexible connecting arm 200 passes through the second limiting part 290 from the fourth connecting channel 292, realizing electrical connection with the electronic devices in the second cavity.

[0185] Therefore, through the assembly of the second limiting part 290 and the second limiting groove 461, the flexible connecting arm 200 and the fourth housing 390 can form a firm and stable physical connection.

[0186] In the embodiments provided in this application, the deformable member 212 within the flexible connecting arm 200 can adjust the distance between the two ends of the flexible connecting arm 200 in the X-axis direction. Therefore, after the flexible connecting arm 200 connects the first earphone body 100 and the second earphone body 300, by adjusting the distance L between the first earphone body 100 and the second earphone body 300, it can adapt to users with different ear thicknesses, provide appropriate clamping force for each user, and improve the user's comfort during long-term wear and during putting on and taking off the earphone 1000.

[0187] It should be noted that the cooperation relationship between the flexible connecting arm 200 and the first limiting part and the second limiting part in any of the above embodiments can be interchanged. At the same time, the corresponding first limiting groove and second limiting groove designs can also be interchanged. For example, the structure and assembly relationship of the first limiting part, the flexible connecting arm 200, and the first limiting groove of the second housing remain unchanged in the first embodiment. However, the structure and assembly relationship of the second limiting part, the flexible connecting arm 200, and the second limiting groove of the fourth housing can adopt the structure and assembly relationship of the second limiting part, the flexible connecting arm 200, and the second limiting groove of the fourth housing in the second embodiment or the third embodiment.

[0188] See again Figure 1 The earphone 1000 also includes a wear detection unit (not shown in the figure) to realize the wear detection function: to identify whether the user is wearing the earphone 1000.

[0189] In one embodiment, the wear detection unit 500 is implemented using a flexible circuit board. Specifically, the second earphone body 300 also includes a second flexible circuit board, which is disposed on the end face of the battery facing the third outer casing. The second flexible circuit board and the battery can form a fixed connection and an electrical connection.

[0190] A capacitive sensor is installed on the second flexible circuit board to realize the wearing detection function. For example, a copper foil is built into the second flexible circuit board as a capacitive sensor to identify whether the user is using the headphones 1000. Specifically, because the second flexible circuit board 510 is close to the third housing 310, when the user is wearing the headphones 1000, the capacitive sensor can fit tightly against the user's ear and form a specific capacitance difference based on the pressure, thus determining that the user is wearing the headphones 1000; when the user is not wearing the headphones 1000, the capacitive sensor is not under pressure, and the capacitance difference remains stable, thus determining that the user is not wearing the headphones 1000.

[0191] In one embodiment, the second flexible circuit board 510 includes a first region 511 and a second region 512. The first region 511 and the second region 512 are separated by an OO plane, which can improve the recognition accuracy. The signals of the first region 511 and the second region 512 are independent. Only when the first region 511 and the second region 512 simultaneously detect proximity to the ear will it be determined that the earphone 1000 is worn on the ear.

[0192] In another embodiment, the wearing detection unit 500 is implemented through optical detection. Specifically, the second earphone body 300 has a transmitter 520 and a receiver 530 for optical detection, that is, it determines whether an object is approaching by emitting and receiving light, thus realizing the wearing detection function. The transmitter 520 can emit a specific light segment, and the receiver 530 can receive the light signal and make a judgment. Specifically, when the user wears the earphone 1000, the specific light segment emitted by the transmitter 520 is reflected by the user's auricle to the receiver 530, which detects the specific light segment signal and determines that the user is wearing the earphone 1000; when the user is not wearing the earphone 1000, the specific light segment emitted by the transmitter 520 will not be reflected by the user's auricle, and the receiver 530 will not be able to detect the specific light segment signal, thus determining that the user is not wearing the earphone 1000 or that the wearing was unsuccessful.

[0193] In another embodiment, the wearing detection unit 500 is implemented through optical detection. Specifically, the first earphone body 100 further includes a receiver 540; the second earphone body 300 further includes a transmitter 550. The receiver 540 and transmitter 550 are arranged side-by-side opposite each other. The transmitter 550 can emit a specific light segment, and the receiver 540 can receive the light signal and make a determination. Specifically, when the user wears the earphone 1000, the specific light segment emitted by the transmitter 550 is blocked by the user's ear, and the receiver 540 cannot detect the specific light segment signal, thus determining that the user is not wearing the earphone 1000 or that the wearing was unsuccessful; when the user is not wearing the earphone 1000, the specific light segment emitted by the transmitter 550 directly enters the receiver 540, and the receiver 540 detects the specific light segment signal, determining that the user is wearing the earphone 1000.

[0194] In addition, the earphone 1000 provided in this application can also be used as a wireless recording microphone.

[0195] Please refer to Figure 20 , Figure 20 This is a scenario diagram showing the earphone 1000 provided in this application being worn as a wireless recording microphone.

[0196] When the earphone 1000 is in wireless microphone mode, the user can hold the earphone 1000 close to their mouth for sound pickup, or clip the U-shaped earphone 1000 to clothing for sound pickup, suitable for scenarios such as karaoke, video recording, live streaming, and calls. Clipping the earphone to clothing or collar frees the user's hands, does not interfere with other activities, and achieves unobtrusive, high-quality sound pickup. Specifically, the deformable component within the flexible connecting arm 200 of the earphone 1000 provided in this application can adjust the distance L between the first earphone body 100 and the second earphone body 300 to adapt to clothing of different thicknesses and collar types, and provide a certain clamping force to ensure that the earphone 1000 is firmly clipped to the clothing.

[0197] When the earphone 1000 activates its wireless microphone mode, it can use the first microphone 370 and the second microphone 380, which are positioned opposite each other on the second earpiece 300, to pick up external sounds, obtain sound signals, and then transmit them to other devices. Specifically, the earphone 1000 can directly transmit the obtained sound signals to terminal devices, such as mobile phones and computers, via Bluetooth, or it can transmit the sound signals to its charging case via Bluetooth, where the charging case stores the sound signals. After recording is complete, the charging case can transfer the recording file to the terminal device for editing.

[0198] On the other hand, when the earphone 1000 provided in this application is used as a wireless recording microphone in outdoor scenarios, such as sports, wind noise and other harsh conditions, additional accessories are needed to cope with them.

[0199] Please refer to Figure 21 and Figure 22 , Figure 21 This is an exploded structural diagram of the earphone 1000 and windproof cover 600 provided in this application. In windy environments, the windproof cover 600 can be used to protect the earphone 1000. The shape of the windproof cover 600 matches the second earphone body 300, and it can be made of sponge or plush material. When the windproof cover 600 is placed on the second earphone body 300, it can prevent dust and filter wind noise.

[0200] Figure 22This is an exploded structural diagram of the earphone 1000 and the first stabilizing accessory 700 and the second stabilizing accessory 800 provided in this application. In sports scenarios, better stability is required, which can be achieved using the first stabilizing accessory 700 or the second stabilizing accessory 800. The shape of the first stabilizing accessory 700 matches the flexible connecting arm 200, allowing it to be secured to the outer surface of the flexible connecting arm 200. The first stabilizing accessory 700 is made of rigid material, and its small opening allows it to constrain the flexible connecting arm 200, providing greater and more stable support. The shape of the second stabilizing accessory 800 matches a portion of the first earphone body 100, a portion of the flexible connecting arm 200, and a portion of the second earphone body 300, allowing it to be completely secured between the first earphone body 100 and the second earphone body 300, i.e., inside the earphone 1000. The second stabilizing accessory 800 includes a first part 801, a second part 802, and a third part 803. The first part is a U-shaped piece, the second part 802 is an arc-shaped thin shell adapted to the contour of the first earphone body 100 extending along the X direction, and it is held in place along the X direction on the first earphone body 100 and the flexible connecting arm 200. The third part 803 is adapted to the contour of the second earphone body 300 extending along the X direction, and is roughly an arc-shaped piece, which is held in place on the outer surface of the second earphone body 300. The second stabilizing accessory 800 is also made of rigid material, and can constrain the flexible connecting arm 200 by setting a small opening, providing a larger and more stable clamping force.

[0201] The headset 1000 provided in this application can easily and directly switch between headset mode and wireless recording microphone mode, truly realizing multiple uses in one device. This reduces the amount of equipment that users in the live streaming and short video industry need to carry around, and provides great convenience for users to live stream and shoot short videos.

[0202] Please refer to the following: Figure 23 and Figure 24 , Figure 23 This is a schematic diagram of the earphone 1000 provided in this application from one angle, which shows the internal structure of the earphone 1000. Figure 24 This is a schematic diagram of the headphones provided in this application from another angle, which shows the internal structure of the headphones 1000.

[0203] See Figure 23 This application provides a headphone 1000 that is symmetrical along the OO plane, enabling it to be indistinguishable between the left and right ears. Details are as follows:

[0204] The first outer peripheral surface 113, that is, the outer contour of the first outer shell 110, is symmetrical about the OO surface.

[0205] The first through hole 114 is symmetrical about the OO plane, and the first sound transmission nozzle 120, which is fixedly installed on the first through hole 114, is also symmetrical about the OO plane.

[0206] The second outer peripheral surface 173, that is, the outer contour of the second outer shell 170, is symmetrical about the OO surface.

[0207] The second through hole 174 is symmetrical about the OO plane, and the second sound transmission nozzle 160, which is fixedly installed on the second through hole 174, is also symmetrical about the OO plane.

[0208] The third outer peripheral surface 313, that is, the outer contour of the third outer shell 310, is symmetrical about the OO surface; the fourth outer peripheral surface 393, that is, the outer contour of the fourth outer shell 390, is symmetrical about the OO surface.

[0209] The third through hole 394 and the fourth through hole 395 are symmetrical about the OO plane, and the first electrode 320 installed on the third through hole 394 and the second electrode 330 installed on the fourth through hole 395 are also symmetrical about the OO plane.

[0210] The outer contour of the flexible connecting arm 200 is symmetrical about the OO plane.

[0211] The pickup 130 is symmetrical about the OO plane.

[0212] The positions of the second microphone 380 and the first microphone 370 are symmetrical about the OO plane.

[0213] Please see Figure 25 , Figure 25 This is a schematic diagram showing the state of the earphone 1000 provided in this application being worn on the left and right ears respectively.

[0214] Since the outer contours of the first earphone body 100, the flexible connecting arm 200, and the second earphone body 300 are completely symmetrical about the OO plane, the earphone 1000, originally designed as a left earphone, can be rotated 180° along the Y-axis to be worn in the right ear. It can be understood that the factory-configured left earphone 1000 and the factory-configured right earphone 1000 are completely identical in appearance; therefore, users do not need to distinguish between left and right ears when wearing the earphone 1000 provided in this application.

[0215] Since the first electrode 320 and the second electrode 330 are symmetrical about the OO plane, and the positive and negative poles of the left earphone 1000 and the right earphone 1000 are defined in the same way, the left earphone 1000 and the right earphone 1000 are in the same state when charging in the charging case, and the user does not need to distinguish between the left and right ears when charging the earphones 1000.

[0216] Regarding audio performance, in the headphones 1000, the sound output area 141 of the speaker 140 is symmetrical about the OO plane; the first microphone 120 and the second microphone 160 are symmetrical about the OO plane; and the positions of the second microphone 380 and the first microphone 370 are symmetrical about the OO plane. Therefore, the headphones 1000 provided in this application are symmetrical about the OO plane in both audio output and audio input. Regardless of whether the user wears the headphones 1000 in the right ear or the left ear, the audio input and audio output effects are consistent and do not change due to changes in spatial position. Therefore, users do not need to distinguish between left and right ears when using the headphones 1000.

[0217] The headset 1000 provided in this application also includes an inertial measurement unit (IMU) sensor for posture determination. Specifically, when the wear detection unit 500 of the headset 1000 detects that a user is wearing the headset 1000, the inertial measurement unit sensor can determine whether the headset 1000 is worn in the user's left or right ear, and then switch the left and right channels to match the main microphone to ensure the quality of calls using the headset 1000.

[0218] The earphone 1000 of this application is symmetrical about the OO plane in terms of appearance, charging design, and audio effect, so users no longer need to distinguish between left and right ears when using the earphone 1000. Furthermore, the earphone 1000 provided in this embodiment can also use an inertial measurement unit sensor to determine whether the earphone 1000 is worn in the user's left or right ear, and then switch the left and right channels to match the main microphone to ensure the quality of calls using the earphone 1000. Therefore, the earphone 1000 provided in this embodiment can solve the problem of difficulty in distinguishing between left and right ears when earphones are similar in shape, allowing users to completely eliminate the need to distinguish between left and right ears when wearing the earphone 1000, improving the flexibility of using the earphone 1000 and enhancing the user experience of wearing the wireless earphone 1000.

[0219] Please see Figure 26 , Figure 26 This is a top view of the headphone 1000 provided in this application from one angle.

[0220] The second through-hole 174 can be an arc-shaped hole, with its center O located on the OO surface. The second microphone 160 also correspondingly has an arc shape. The central angle α of the second through-hole 174 should be less than or equal to 90°. Specifically, the central angle α of the second through-hole 174 refers to the included angle between two rays emanating from the center O on the OO surface and extending to both ends of the second through-hole 174. When the user wears the headphones 1000, if the central angle α of the second through-hole 174 is greater than 90°, the second microphone 160, fixedly mounted on the second through-hole 174, may be blocked by the user's ear, affecting the audio effect.

[0221] The above are merely some embodiments and implementation methods of this application. 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, The device includes a first earphone body, a flexible connecting arm, and a second earphone body. The flexible connecting arm connects the first earphone body and the second earphone body. The flexible connecting arm includes a first end and a second end that are opposite to each other. The first end is connected to the first earphone body, and the second end is connected to the second earphone body. The first earphone body and the second earphone body are disposed opposite to each other and have an initial distance. The flexible connecting arm is capable of deformation, and the deformation of the flexible connecting arm can adjust the initial distance between the first earphone body and the second earphone body to an adjustable distance; The flexible connecting arm includes a deformable component and an insulating soft body. The insulating soft body is sleeved on the outside of the deformable component, and the deformation of the deformable component causes the flexible connecting arm to deform. The earphone includes a first limiting part, which is connected to the first end of the flexible connecting arm, and a first protrusion is provided on the outer peripheral surface of the first limiting part; The first earphone body includes a first outer shell and a second outer shell that docks with the first outer shell. The second outer shell is provided with a second sub-cavity and a first limiting groove located in the second sub-cavity. The first groove peripheral wall of the first limiting groove is recessed with a first locking groove, and the length direction of the first locking groove extends along the axial direction of the first limiting groove toward the inside of the second sub-cavity. The first limiting part is received in the first limiting groove, and the first protrusion is received in the first slot and held in the first slot, thereby connecting the first limiting part to the first earphone body and the flexible connecting arm.

2. The earphone according to claim 1, characterized in that, The distance between the first earphone body and the second earphone body is greater than or equal to 2 mm and less than or equal to 5 mm.

3. The earphone according to claim 1, characterized in that, The height of the flexible connecting arm is greater than or equal to 3 mm and less than or equal to 30 mm.

4. The earphone according to claim 1, characterized in that, The earphone includes a second limiting part, which is connected to the second end of the flexible connecting arm and is detachably mounted on the second earphone body, thereby connecting the second earphone body and the flexible connecting arm.

5. The earphone according to claim 4, characterized in that, The first limiting part is held in place at the first end, or the first limiting part is installed and fixed at the first end of the flexible connecting arm; The second limiting part is held in place at the second end, or the second limiting part is installed and fixed at the second end of the flexible connecting arm.

6. The earphone according to claim 4, wherein the first limiting part is integrally formed with the flexible connecting arm, or the second limiting part is integrally formed with the flexible connecting arm.

7. The earphone according to claim 5, characterized in that, The first limiting part is fitted around the outer periphery of the first end, or the first limiting part is attached to the end face of the first end.

8. The headphones according to claim 5, characterized in that, The first end of the flexible connecting arm is provided with a first recess and a first locking block. The opening side of the first recess faces away from the end face of the first end. The first locking block protrudes from one side of the first recess. The inner circumference of the first recess is provided with a locking platform. The first limiting part is provided with a first annular groove and a first connecting channel on its outer side. The length extension direction of the first annular groove is perpendicular to the length extension direction of the first connecting channel. The first limiting part is inserted into the first recess, and the first annular groove is engaged with the locking platform of the first recess, and the first locking block is engaged with the first connecting channel.

9. The headphones according to claim 7 or 8, characterized in that, The second limiting part is fitted around the outer periphery of the second end, or the second limiting part is fixed to the end face of the second end.

10. The headphones according to claim 7 or 8, characterized in that, The second end is provided with a second recess and a second locking block. The opening side of the second recess faces away from the end face of the second end. The second locking block protrudes from one side of the second recess. The inner circumferential side of the second recess is provided with a locking platform. The second limiting part is provided with a second annular groove and a second connecting channel on its outer side. The length extension direction of the second annular groove is perpendicular to the length extension direction of the second connecting channel. The second limiting part is inserted into the second recess, and the second annular groove is engaged with the locking platform of the second recess. The second locking block is engaged with the second connecting channel.

11. The earphone according to claim 4, characterized in that, The second limiting part has a second protrusion on its outer peripheral surface. The second earphone body includes a third outer shell and a fourth outer shell. The fourth outer shell has a fourth sub-cavity and a second limiting groove located in the fourth sub-cavity. The second limiting groove has a second slot recessed on its second groove peripheral wall, the second limiting part is received in the second limiting groove, and the second protrusion is engaged with the second slot.

12. The earphone according to claim 4, characterized in that, The second limiting part has two second protrusions on its outer side, and the two second protrusions are located on opposite surfaces at one end of the second limiting part; The second earphone body includes a third outer shell and a fourth outer shell. The second outer shell is provided with a second sub-cavity and a second limiting groove located in the second sub-cavity. The second groove peripheral wall of the second limiting groove is provided with two opposing third and fourth abutments. The second limiting part is received in the second limiting groove, and the two second protrusions are respectively engaged with the third and fourth abutments.

13. The earphone according to claim 1, characterized in that, The first outer shell includes a first outer peripheral surface, which is symmetrical about a symmetry plane; The second outer casing includes a second outer peripheral surface, which is symmetrical about a plane of symmetry; The second earphone body includes a third shell and a fourth shell; The third outer shell includes a third outer peripheral surface, which is symmetrical about a symmetry surface; The fourth outer shell includes a fourth outer peripheral surface, which is symmetrical about a symmetry surface; The outer contour of the flexible connecting arm is symmetrical about the symmetrical plane.

14. The earphone according to claim 13, characterized in that, The first microphone, the second microphone, and the pickup of the first earphone body are symmetrical about the symmetrical plane. The first microphone and the second microphone of the second earphone body are arranged opposite to each other inside the second earphone body, and the positions of the first microphone and the second microphone are symmetrical about the plane of symmetry.

15. The earphone according to claim 14, characterized in that, The second housing includes a second through hole, which faces away from the second housing and towards the first housing; in the length direction perpendicular to the flexible connecting arm, the second through hole is an arc-shaped hole, and the central angle of the second through hole is less than or equal to 90°.

16. The earphone according to claim 14, characterized in that, The headphones also include an inertial measurement unit sensor and a control unit; When a user wears the headphones, the inertial measurement unit sensor is used to determine whether the headphones are located in the user's left or right ear, and then sends the determination information to the control unit. After receiving the judgment information sent by the inertial measurement unit sensor, the control unit controls the earphone to switch the sound channel, so that the earphone worn on the ear switches to the sound channel corresponding to the left or right ear.

17. The earphone according to claim 13, characterized in that, The second earphone body also includes a first electrode and a second electrode; The first electrode and the second electrode are symmetrical about the plane of symmetry.

18. The headphones according to any one of claims 14-17, characterized in that, The earphones include a microphone function, and the first and second earphone bodies can hold the user's clothing or a stand.

19. A pair of headphones, characterized in that, It includes a first earphone and a second earphone, wherein the first earphone and the second earphone are earphones as described in any one of claims 1-18.

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