Headphones

Abstract

The present application belongs to the technical field of electronic devices and discloses headphones. The headphones comprise a headband assembly, a connecting assembly and a loudspeaker assembly, wherein the connecting assembly comprises a fixing assembly and a telescopic assembly; the fixing assembly comprises a shell assembly and a locking member, the shell assembly comprising a first shell and a second shell; the telescopic assembly comprises a telescopic member; the shell assembly is provided with an insertion hole, and the headband assembly is provided with an insertion part, the insertion part being inserted into the insertion hole in a telescoping direction; the locking member is configured to lock the first shell and the insertion part in the telescoping direction; and the second shell is provided with a first limiting part and a second limiting part. In the headphones provided in the present application, the locking member locks the first shell and the insertion part in the telescoping direction, and the first limiting part and the second limiting part limit the movement of the second shell in the telescoping direction, so that it is unnecessary to provide the second shell with a connecting hole, allowing for a reduction in the thickness of the second shell at the joint between the headband assembly and the connecting assembly, thereby reducing the size of the second shell, facilitating product miniaturization.

Description

Earphone

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an earphone.

BACKGROUND

[0002] Earphones are widely used in people's daily life, and can be used with electronic devices such as mobile phones and computers. The earphone can enable the user to listen to the sound from the electronic device without affecting others, and can help the user receive the sound from the electronic device in an open environment such as collaborative office, business meeting, and sports. The earphone can include a headband assembly, a connecting assembly, and a speaker assembly. The connecting assembly is connected between the headband assembly and the speaker assembly, and is used to adjust the distance between the speaker assembly and the headband assembly to meet the wearing needs of different users. In the related art, screws are usually used to fix the headband assembly and the connecting assembly at the connection position of the two assemblies, but the screws need to be inserted into the related parts to a certain depth to ensure the connection strength, resulting in a large size of the related parts at the connection position of the headband assembly and the connecting assembly.

[0003]

SUMMARY

[0004] The present application provides an earphone, which can solve the technical problem of a large size of the related parts at the connection position of the headband assembly and the connecting assembly.

[0005] To solve the above technical problem, the present application provides an earphone, which includes a headband assembly, a connecting assembly, and a speaker assembly. The headband assembly is wrapped around the periphery of the user's head in a wearing state and provides a clamping force. The connecting assembly includes a fixed assembly connected to the headband assembly and an extension assembly connected to the speaker assembly. The extension assembly has an extension direction relative to the fixed assembly. The fixed assembly includes a housing assembly and a locking member. The housing assembly includes a first housing and a second housing that enclose an extension cavity. The extension assembly includes an extension member. One end of the extension member is slidingly accommodated in the extension cavity along the extension direction, and the other end of the extension member is connected to the speaker assembly. The housing assembly is provided with a plug hole, and the headband assembly has a plug part that is inserted into the plug hole along the extension direction. The locking member is arranged to lock the first housing and the plug part along the extension direction. The second housing is provided with a first limiting part and a second limiting part. The first limiting part is used to limit the movement of the second housing towards the side where the headband assembly is located, and the second limiting part is used to limit the movement of the second housing towards the side where the speaker assembly is located.

[0006] In another aspect, this application provides an earphone, which includes a headband assembly, a connecting assembly, and a speaker assembly. When worn, the headband assembly wraps around the user's head and provides clamping force. The connecting assembly connects the headband assembly and the speaker assembly. The connecting assembly includes a fixing assembly and a telescopic assembly. The fixing assembly is connected to the headband assembly, and the telescopic assembly includes a telescopic member. One end of the telescopic member is telescopically connected to the fixing assembly, and the other end of the telescopic member is connected to the speaker assembly. The headband assembly includes a wire harness that enters the fixing assembly from a first end near the headband assembly and exits the fixing assembly from a second end near the speaker assembly. The wire harness is electrically connected to the speaker assembly.

[0007] In another aspect, this application provides an earphone, including a headband assembly, a connecting assembly, and a speaker assembly. The headband assembly, when worn, is wrapped around the periphery of the user's head and provides clamping force. The connecting assembly is connected between the headband assembly and the speaker assembly. The connecting assembly includes a fixing assembly and a telescopic assembly. The fixing assembly is connected to the headband assembly and has a telescopic cavity. The telescopic assembly includes a telescopic member and at least two damping parts. One end of the telescopic member is slidably accommodated in the telescopic cavity, and the other end of the telescopic member is connected to the speaker assembly. At least two damping parts are spaced apart on the telescopic member along its circumference, and each damping part elastically abuts against the cavity wall of the telescopic cavity in different directions.

[0008] The headphones provided in this application, firstly, have a locking member that locks the first housing and the plug-in part in the telescopic direction, so that the first housing and the plug-in part are relatively fixed in the telescopic direction; furthermore, by setting a first limiting part and a second limiting part, the movement of the second housing in the telescopic direction is restricted, so that the plug-in part, the first housing and the second housing are relatively fixed in the telescopic direction. Compared with fixing the three parts with screws, there is no need to open a connection hole on the second housing, which can reduce the thickness of the second housing at the connection between the headband assembly and the connecting assembly, thereby reducing the size of the second housing and facilitating the miniaturization of the product. [Attached Image Description]

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of the assembly structure of an embodiment of the earphone provided in this application;

[0011] Figure 2 is an exploded structural diagram of an embodiment of the headband assembly provided in this application;

[0012] Figure 3 is a cross-sectional structural diagram of an embodiment of the headband assembly provided in this application along a viewpoint;

[0013] Figure 4 is an exploded structural diagram of an embodiment of the connection component provided in this application;

[0014] Figure 5 is an exploded structural diagram of an embodiment of the speaker assembly provided in this application;

[0015] Figure 6 is an exploded structural diagram of an embodiment of the speaker assembly and microphone assembly provided in this application;

[0016] Figure 7 is a partial cross-sectional structural schematic diagram of an embodiment of the headphones provided in this application along a viewpoint;

[0017] Figure 8 is a partial cross-sectional structural schematic diagram of another embodiment of the headphones provided in this application from a certain perspective;

[0018] Figure 9 is a cross-sectional view of an embodiment of the connecting component provided in this application.

[0019] Figure 10 is a schematic diagram of the wiring structure of the wire harness in an embodiment of the earphone provided in this application;

[0020] Figure 11 is a structural schematic diagram of an embodiment of the first housing provided in this application from a certain perspective;

[0021] Figure 12 is a structural schematic diagram of an embodiment of the first housing provided in this application from another perspective;

[0022] Figure 13 is a structural schematic diagram of an embodiment of the first housing provided in this application from another perspective;

[0023] Figure 14 is a structural schematic diagram of an embodiment of the damping part provided in this application;

[0024] Figure 15 is a schematic diagram of an embodiment of the damping part provided in this application, in which a holding part is provided.

Detailed Implementation Methods

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0026] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "first," "second," and "third" in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] This application provides an earphone. Referring to Figure 1, the earphone 100 may include a headband assembly 10, a connecting assembly 20, and a speaker assembly 30. The connecting assembly 20 is connected between the headband assembly 10 and the speaker assembly 30. There may be two speaker assemblies 30 and two connecting assemblies 20. The two speaker assemblies 30 are used to transmit sound to the user's left and right ears respectively, and each connecting assembly 20 connects one speaker assembly 30 to one end of the headband assembly 10. The two speaker assemblies 30 may be the same or different. For example, the earphone 100 may also include a microphone assembly 40, where one speaker assembly 30 may have the microphone assembly 40, while the other speaker assembly 30 may not have the microphone assembly 40.

[0029] The headband assembly 10, when worn, wraps around the periphery of the user's head and provides clamping force. The headband assembly 10 is designed to fit the user's head contour, making it more comfortable and stable to wear. The headband assembly 10 also elastically clamps the sides of the user's head. Referring to Figures 1-3, the headband assembly 10 may include a clamping member 11, an elastic cover 12, an elastic abutment portion 13, and a wire harness 14. The clamping member 11 is curved along its length so that the headband assembly 10, when worn, wraps around the periphery of the user's head and provides clamping force. The clamping member 11 may be made of titanium, steel, or carbon fiber to provide good mechanical strength and deformation capacity, thus improving its service life. The wire harness 14 is electrically connected to the speaker assembly 30. When two speaker assemblies 30 are provided, the wire harness 14 can be connected between the two speaker assemblies 30. The wire harness 14 is arranged along the length direction of the clamping member 11. The elastic cover 12 is molded to cover the periphery of the clamping member 11 and the wire harness 14, so as to conceal the wire harness 14 within the elastic cover 12 and prevent the wire harness 14 from being exposed and affecting the appearance of the product. The elastic cover 12 can be made of elastic materials such as silicone or rubber to improve wearing comfort. In the wearing state, the elastic abutment part 13 is provided on the side of the elastic cover 12 near the top of the head for abutting against the top of the head to assist in positioning the headband assembly 10 on the user's head. Optionally, the elastic abutment part 13 and the elastic cover 12 are integrally molded, which can simplify the processing technology of the headband assembly 10.

[0030] The connecting component 20 can be used to adjust the distance between the speaker assembly 30 and the headband assembly 10. As shown in Figures 1 and 4, the connecting component 20 may include a fixing component 21 and a telescopic component 22. The fixing component 21 is connected to the headband assembly 10. The telescopic component 22 includes a telescopic member 221, one end of which is telescopically connected to the fixing component 21, and the other end of which is connected to the speaker assembly 30. When the telescopic component 221 moves telescopically relative to the fixed component 21, since the telescopic component 221 is connected to the speaker assembly 30, the telescopic component 221 can drive the speaker assembly 30 to move telescopically relative to the fixed component 21, thereby changing the distance between the speaker assembly 30 and the fixed component 21. The fixed component 21 is connected to the headband assembly 10, and the fixed component 21 and the headband assembly 10 are relatively fixed. When the distance between the speaker assembly 30 and the fixed component 21 changes, the distance between the speaker assembly 30 and the headband assembly 10 changes accordingly, so that when wearing the headphones 100, it can be adaptively adjusted according to the different head shapes of the users, positioning the speaker assembly 30 in a suitable position. The speaker assembly 30 can fit the user's face more closely or be positioned near the ear, thereby improving the compatibility of the headphones 100.

[0031] The speaker assembly 30 is used to transmit sound to the human ear. Referring to Figures 1, 5, and 6, the speaker assembly 30 may include a housing assembly 31, a bone conduction speaker 32, and / or an air conduction speaker 33. Specifically, the speaker assembly 30 may include one of the bone conduction speaker 32 and the air conduction speaker 33, or both may be present simultaneously. The housing assembly 31 is used to house the bone conduction speaker 32 and / or the air conduction speaker 33. The housing assembly 31 may include a main housing 311 and a main cover 312, which together form an installation space for housing the bone conduction speaker 32 and / or the air conduction speaker 33. When powered on, the speaker converts electrical signals into mechanical vibrations, allowing the user to hear sound through the headphones 100. The bone conduction speaker 32 is fitted to the user's face. The mechanical vibrations generated by the bone conduction speaker 32 can act directly on the user's auditory nerve based on the principle of bone conduction, primarily through the user's bones and tissues. The mechanical vibrations generated by the air conduction speaker 33 can act on the user's eardrum based on the principle of air conduction, primarily through air, and thus on the auditory nerve. The sound heard by the user can be referred to as "bone conduction sound" or "air conduction sound." The speaker assembly 30 can generate bone conduction sound or air conduction sound, or both simultaneously. The speaker assembly 30 may also include at least one of a battery 34 and a control circuit board 35. The battery 34 provides power to the headphones 100 during operation, and the control circuit board 35 controls the operating state of the headphones 100.

[0032] The stick microphone assembly 40 can be used to collect the user's voice. The stick microphone assembly 40 is rotatably mounted on the speaker assembly 30. As shown in Figure 6, the stick microphone assembly 40 may include a stick body assembly 41, a microphone assembly 42, and a pivot mechanism 43. The microphone assembly 42 and the pivot mechanism 43 can be connected to both ends of the stick body assembly 41, and the pivot mechanism 43 is rotatably connected to the speaker assembly 30. When worn, the pivot mechanism 43 can rotate relative to the speaker assembly 30, thereby positioning the microphone assembly 42 in the pickup area of ​​the user's mouth to meet different voice collection needs.

[0033] The telescopic component 22 has a telescopic direction relative to the fixed component 21. Referring to Figures 4 and 7, the fixed component 21 may include a housing component 23. The housing component 23 has a telescopic cavity 231, one end of the telescopic member 221 is slidably accommodated in the telescopic cavity 231 along the telescopic direction, and the other end of the telescopic member 221 is connected to the speaker assembly 30. Exemplarily, the telescopic direction may be the direction shown by the Z-axis in Figure 7. When the telescopic member 221 slides in the telescopic cavity 231 along the telescopic direction, the telescopic member 221 can drive the speaker assembly 30 to slide relative to the fixed component 21, thereby changing the distance between the speaker assembly 30 and the fixed component 21. The distance between the speaker assembly 30 and the headband assembly 10 changes accordingly, so that the headphones 100 can be adaptively adjusted according to different user head shapes when worn.

[0034] Optionally, the housing assembly 23 is a one-piece structure. For example, the housing assembly 23 is integrally formed by injection molding, and a telescopic cavity 231 is formed inside. The one-piece structure of the housing assembly 23 has better overall integrity.

[0035] In one embodiment, as shown in Figures 7-9, the housing assembly 23 includes a first housing 24 and a second housing 25, which together form a telescopic cavity 231. Exemplarily, the first housing 24 has a first telescopic groove 246, and the second housing 25 has a second telescopic groove 253. After the first housing 24 is assembled relative to the second housing 25, the first telescopic groove 246 and the second telescopic groove 253 communicate to form the telescopic cavity 231. By configuring the housing assembly 23 as a separate unit, with the telescopic cavity 231 formed by the first housing 24 and the second housing 25, the telescopic cavity 231 can be formed by an open groove. Compared to integrally molding the housing assembly 23, this reduces the processing difficulty of the housing assembly 23.

[0036] The headband assembly 10 has a connector 15 for connecting the headband assembly 10 to the fixing assembly 21. For example, the connector 15 can be connected to the housing assembly 23. The connector 15 can be part of the clamping member 11, i.e., the connector 15 is integrally formed into the clamping member 11; alternatively, the connector 15 can be machined separately from the clamping member 11 and then assembled. Optionally, the connector 15 is fixed to the housing assembly 23 with screws. For example, the connector 15 is clamped between the first housing 24 and the second housing 25, and the screws pass through the first housing 24, the connector 15, and the second housing 25 in a direction perpendicular to the telescopic direction to restrict movement of the three components in the telescopic direction. In the above scheme, through holes for screws can be opened on the first housing 24 and the plug-in part 15, and a connection hole can be opened on the second housing 25. To prevent the screws from being exposed and affecting the appearance of the earphone 100, the connection hole can be a blind hole. To ensure the connection strength between the screw and the second housing 25, the connection hole on the second housing 25 needs to have a certain depth, but this will result in a larger size of the second housing 25 at the connection between the headband assembly 10 and the connecting assembly 20, such as a thicker thickness, which is not conducive to the miniaturization of the product.

[0037] As shown in Figures 7 and 8, the housing assembly 23 is provided with a insertion hole 232, and the insertion part 15 is inserted into the insertion hole 232 along the telescopic direction. Specifically, the insertion hole 232 can be formed in the first housing 24, or in the second housing 25, or slots can be formed on the first housing 24 and the second housing 25 respectively, with the first housing 24 and the second housing 25 surrounding each other to form the insertion hole 232. The fixing assembly 21 includes a locking member 211, which is configured to lock the first housing 24 and the insertion part 15 along the telescopic direction, so that the first housing 24 and the insertion part 15 are relatively fixed along the telescopic direction. Further, the second housing 25 is provided with a first limiting part 251 and a second limiting part 252. The first limiting part 251 is used to limit the movement of the second housing 25 toward the side where the headband assembly 10 is located, and the second limiting part 252 is used to limit the movement of the second housing 25 toward the side where the speaker assembly 30 is located, thereby limiting the movement of the second housing 25 in the telescopic direction. In the above scheme, firstly, the locking member 211 locks the first housing 24 and the plug-in part 15 in the telescopic direction, so that the first housing 24 and the plug-in part 15 are relatively fixed in the telescopic direction; further, by setting the first limiting part 251 and the second limiting part 252, the movement of the second housing 25 in the telescopic direction is restricted, so that the plug-in part 15, the first housing 24 and the second housing 25 are relatively fixed in the telescopic direction. Compared with fixing the three by screws, the second housing 25 does not need to be provided with a connection hole, which can reduce the thickness of the second housing 25 at the connection between the headband assembly 10 and the connecting assembly 20, thereby reducing the size of the second housing 25, which is conducive to the miniaturization of the product.

[0038] Optionally, the locking member 211 is configured as a snap-fit ​​(not shown in the figure), such as a U-shaped snap-fit, and the housing assembly 23 has a first vertical direction perpendicular to the telescopic direction of the telescopic member 221. For example, the first vertical direction is the X direction in Figure 7. The first housing 24 and the insertion portion 15 have slots along the first vertical direction. After the insertion portion 15 is assembled relative to the first housing 24, the snap-fit ​​engages in the slots, thereby locking the first housing 24 and the insertion portion 15 along the telescopic direction.

[0039] Referring to Figure 8, in one embodiment, the first housing 24 has a first locking hole 2421, and the insertion part 15 has a second locking hole 151. After the insertion part 15 is assembled relative to the first housing 24, the first locking hole 2421 and the second locking hole 151 overlap each other. The locking member 211 is inserted into the first locking hole 2421 and the second locking hole 151, and the locking member 211 cooperates with the hole wall of the locking hole. The locking member 211 can restrict the relative movement of the first housing 24 and the insertion part 15 in the extension direction, thereby locking the first housing 24 and the insertion part 15 in the extension direction. Exemplarily, the locking member 211 is provided in the form of a screw or a pin, and the first locking hole 2421 and the second locking hole 151 are through holes that pass through the first housing 24 and the insertion part 15 respectively in a first vertical direction. The inner wall of the locking hole can also be threaded. When the locking member 211 is a screw, it forms a threaded connection with the first housing 24 and the insertion part 15, allowing it to lock the first housing 24 and the insertion part 15 in the first vertical direction. Alternatively, when the locking member 211 is a pin, it has an interference fit with the wall of the locking hole, thereby locking the first housing 24 and the insertion part 15 in the first vertical direction. By providing locking holes in the first housing 24 and the insertion part 15, the locking holes and the locking member 211 cooperate to limit the movement of the first housing 24 and the insertion part 15 in the extension direction. The locking holes are easier to manufacture, and the locking member 211 can be either a screw or a pin, which is less costly than a snap-fit ​​locking member, thus reducing product costs.

[0040] Optionally, the first limiting part 251 is disposed at one end of the second housing 25 near the headband assembly 10. For example, the first limiting part 251 may be the end wall of the second housing 25 near the headband assembly 10, and the outer periphery of the insertion part 15 is provided with a flange. After the insertion part 15 is assembled in place relative to the second housing 25, the flange abuts against the end wall in the extension direction, thereby causing the insertion part 15 to abut against the first limiting part 251 in the extension direction, so as to restrict the movement of the second housing 25 toward the side where the headband assembly 10 is located.

[0041] In one embodiment, as shown in FIG8, the first limiting part 251 is disposed within the space enclosed by the first housing 24 and the second housing 25. For example, the first limiting part 251 may be a boss or protrusion on the second housing 25 protruding toward the side where the first housing 24 is located. After the plug-in part 15 is assembled relative to the second housing 25, the end of the plug-in part 15 near the speaker assembly 30 abuts against the boss or protrusion in the telescopic direction, thereby causing the plug-in part 15 to abut against the first limiting part 251 in the telescopic direction to restrict the movement of the second housing 25 toward the side where the headband assembly 10 is located. In contrast, the above embodiment does not require a flange to be provided on the outer periphery of the plug-in part 15, which can simplify the processing technology of the plug-in part 15 and reduce production costs; in addition, the first limiting part 251 is disposed within the space enclosed by the first housing 24 and the second housing 25, which can prevent the first limiting part 251 from being exposed and affecting the appearance of the product.

[0042] Optionally, the first limiting part 251 forms a portion of the cavity wall of the telescopic cavity 231 near one end of the headband assembly 10. When the telescopic member 221 slides in the telescopic cavity 231 toward the side where the headband assembly 10 is located, the end of the telescopic member 221 near the headband assembly 10 can abut against the first limiting part 251 to limit the telescopic stroke of the telescopic member 221 toward the side where the headband assembly 10 is located. This prevents the telescopic member 221 from touching the plug-in part 15 when it slides, thus preventing the telescopic member 221 from affecting the connection between the plug-in part 15 and the first housing 24 when it slides. This can improve the reliability of the connection between the plug-in part 15 and the fixing assembly 21.

[0043] Optionally, the second limiting part 252 is disposed at one end of the second housing 25 near the speaker assembly 30. For example, the second limiting part 252 may be the end wall of the second housing 25 near the speaker assembly 30, and the first housing 24 has a flange protruding toward the side where the second housing 25 is located at one end near the speaker assembly 30. After the second housing 25 is assembled relative to the first housing 24, the flange abuts against the end wall in the extension direction, thereby causing the first housing 24 to abut against the second limiting part 252 in the extension direction to restrict the movement of the second housing 25 toward the side where the speaker assembly 30 is located.

[0044] Referring to Figure 8, in one embodiment, the second limiting portion 252 protrudes from the outside of the second housing 25 and at least partially overlaps with the insertion hole 232 along the telescopic direction. After the second housing 25 is assembled relative to the first housing 24, the first housing 24 abuts against the second limiting portion 252 along the telescopic direction to restrict the movement of the second housing 25 toward the side where the speaker assembly 30 is located. The second limiting portion 252's at least partial overlap with the insertion hole 232 along the telescopic direction allows the insertion hole 232 to be formed at one end of the second housing 25 near the headband assembly 10. The second limiting portion 252 surrounds the outer periphery of the insertion hole 232's wall, reinforcing the insertion hole 232 opening of the second housing 25. This enhances the strength of the second housing 25 at the insertion hole 232 opening, making the insertion hole 232 less prone to failure, thereby improving the reliability of the connection between the insertion portion 15 and the fixing assembly 21.

[0045] In one embodiment, as shown in FIG8, a reinforcing protrusion 244 is provided on the first housing 24, protruding towards the side where the second housing 25 is located, and a first locking hole 2421 is formed on the reinforcing protrusion 244. This arrangement firstly reinforces the first locking hole 2421 of the first housing 24, enhancing the strength of the first housing 24 at that location and making the first locking hole 2421 less prone to failure, thereby improving the reliability of the connection between the insertion part 15 and the fixing component 21. Furthermore, the reinforcing protrusion 244 protrudes towards the side where the second housing 25 is located, placing it within the space enclosed by the first housing 24 and the second housing 25, thus concealing the reinforcing protrusion 244 between the first housing 24 and the second housing 25. While reinforcing the first locking hole 2421 of the first housing 24, this also reduces the impact of the reinforcing protrusion 244 on the appearance of the housing component 23.

[0046] Optionally, the reinforcing protrusion 244 forms a portion of the cavity wall of the telescopic cavity 231 near one end of the headband assembly 10. When the telescopic member 221 slides in the telescopic cavity 231 toward the side where the headband assembly 10 is located, the end of the telescopic member 221 near the headband assembly 10 can abut against the reinforcing protrusion 244 to limit the telescopic stroke of the telescopic member 221 toward the side where the headband assembly 10 is located. This prevents the telescopic member 221 from touching the insertion part 15 when it slides, thus preventing the telescopic member 221 from affecting the connection between the insertion part 15 and the first housing 24 when it slides. This can improve the reliability of the connection between the insertion part 15 and the fixing assembly 21. The reinforcing protrusion 244 reinforces the opening of the first locking hole 2421 of the first housing 24, and at the same time, the reinforcing protrusion 244 also serves as a limiter for the telescopic stroke of the telescopic member 221 toward the headband assembly 10. On the one hand, it reduces the number of parts of the fixing assembly 21, which can reduce costs; on the other hand, compared to setting an additional telescopic stroke limiter for the telescopic member 221 on the side of the reinforcing protrusion 244 near the speaker assembly 30, it can make the maximum telescopic stroke position of the telescopic member 221 toward the headband assembly 10 as close as possible to the headband assembly 10. Under the same telescopic stroke conditions, the internal space of the fixing assembly 21 is fully utilized, which can reduce the length of the fixing assembly 21 in the telescopic direction, which is conducive to the miniaturization of the product.

[0047] Optionally, the first housing 24 and the second housing 25 are bonded together to restrict their relative movement in the vertical direction of the telescopic direction, making it difficult for the first housing 24 and the second housing 25 to separate in the vertical direction of the telescopic direction, preventing the second housing 25 from falling off, thereby ensuring that the housing assembly 23 has good integrity.

[0048] Referring to Figure 9, in one embodiment, a limiting groove 254 extending in the telescopic direction is provided on one of the first housing 24 and the second housing 25, and a first limiting flange 245 is provided on the other of the first housing 24 and the second housing 25. That is, the limiting groove 254 can be provided in the second housing 25, and correspondingly, the first limiting flange 245 is provided in the first housing 24; or the limiting groove 254 can be provided in the first housing 24, and correspondingly, the first limiting flange 245 is provided in the second housing 25. The following description uses the example of the limiting groove 254 being provided in the second housing 25. The first limiting flange 245 is accommodated in the limiting groove 254 to allow the first housing 24 and the second housing 25 to slide relative to each other in the telescopic direction, while restricting the separation of the second housing 25 and the first housing 24 relative to each other in the direction perpendicular to the telescopic direction, preventing the second housing 25 from falling off, thereby ensuring that the housing assembly 23 has good integrity. By setting the first limiting flange 245 and the limiting slide groove 254, the first housing 24 and the second housing 25 slide and engage with each other along the telescopic direction, which not only facilitates the assembly and connection of the first housing 24 and the second housing 25, but also facilitates the disassembly and maintenance in the later stage, and can also limit the relative movement of the second housing 25 and the first housing 24 in the vertical direction of the telescopic direction.

[0049] As shown in Figure 9, the first housing 24 has a first vertical direction perpendicular to the telescopic direction of the telescopic member 221, and a second vertical direction perpendicular to both the telescopic direction and the first vertical direction. Exemplarily, the first vertical direction and the second vertical direction can be the X-axis direction and the Y-axis direction in Figure 9, respectively. The first housing 24 includes two sidewalls 241 spaced apart from each other along the first vertical direction and a bottom wall 242 connecting the two sidewalls 241 along the first vertical direction. The thickness of the two sidewalls 241 along the second vertical direction is greater than the thickness of the bottom wall 242 along the second vertical direction, forming a first telescopic groove 246 between the two sidewalls 241. By setting the two sidewalls 241 and the bottom wall 242 to form the first telescopic groove 246, the first telescopic groove 246 is open towards the side of the second housing 25, so that it communicates with the second telescopic groove 253 opened on the second housing 25 to form a telescopic cavity 231. Since one side of the first telescopic groove 246 is open, it is easier to process than a closed groove, thus simplifying the processing technology of the first housing 24.

[0050] Optionally, the first limiting flange 245 is connected to the side wall 241 and protrudes towards the side where the first telescopic groove 246 is located. There can be multiple first limiting flanges 245; for example, multiple first limiting flanges 245 are arranged at intervals along the telescopic direction. The first limiting flanges 245 cooperate with the limiting groove 254 to form multi-point limiting, making it difficult for the second housing 25 and the first housing 24 to separate from each other in the direction perpendicular to the telescopic direction. Alternatively, there can be only one first limiting flange 245. For example, a first limiting flange 245 extends continuously along the telescopic direction. In the telescopic direction, the length of the first limiting flange 245 is approximately equal to the length of the limiting groove 254. When the first housing 24 is assembled relative to the second housing 25, the continuously extending first limiting flange 245 and the limiting groove 254 cooperate to form multi-point limiting, making it difficult for the second housing 25 and the first housing 24 to separate from each other in the direction perpendicular to the telescopic direction. In addition, the continuously extending first limiting flange 245 can also seal the splice seam between the first housing 24 and the second housing 25, improve the airtightness of the telescopic cavity 231, and prevent dust from entering the telescopic cavity 231.

[0051] Optionally, a limiting groove 254 is formed on the side wall of the second housing 25. In the telescopic direction, one end of the limiting groove 254 is open and the other end is closed. For example, the end of the limiting groove 254 near the speaker assembly 30 is open and the end near the headband assembly 10 is closed, so that the first housing 24 can be slidably assembled to the second housing 25 in the telescopic direction. Optionally, a second limiting part 252 is provided at the end of the second housing 25 near the headband assembly 10. For example, the second limiting part 252 can be the end wall of the limiting groove 254 near the headband assembly 10. After the first housing 24 is slidably positioned relative to the second housing 25, the first limiting flange 245 abuts against the end wall near the headband assembly 10, so that the first housing 24 abuts against the second limiting part 252 in the telescopic direction, thereby restricting the movement of the second housing 25 toward the side where the speaker assembly 30 is located. The second limiting part 252 is set as the end wall of the limiting groove 254 near the headband assembly 10, which reduces the number of parts on the second housing 25 and helps to reduce costs.

[0052] In one embodiment, the locking member 211 is configured not to directly contact the second housing 25. Optionally, the second locking hole 151 is a blind hole on the insertion part 15 along the first vertical direction. The second locking hole 151 does not penetrate the side of the insertion part 15 near the second housing 25, so that the locking member 211 does not directly contact the second housing 25. This can reduce the opening depth of the second locking hole 151 on the insertion part 15, thereby reducing the weakening effect of the opening on the strength of the insertion part 15 and improving the reliability of the connection between the insertion part 15 and the fixing component 21. Alternatively, the second locking hole 151 is a through hole on the insertion part 15 along the first vertical direction. The length of the locking member 211 along the first vertical direction is less than the sum of the lengths of the first locking hole 2421 and the second locking hole 151 along the first vertical direction, so that the end of the locking member 211 near the second housing 25 does not contact the second housing 25. This can prevent the locking member 211 from touching the second housing 25 when assembling the locking member 211, and avoid the locking member 211 causing the second housing 25 and the first housing 24 to move relative to each other in the first vertical direction.

[0053] The elastic cover 12 can extend along the length of the clamping member 11 to the connection between the headband assembly 10 and the fixing member 21. For example, the elastic cover 12 covers the outer periphery of the insertion portion 15. At the connection between the headband assembly 10 and the fixing member 21, there is a seam between the elastic cover 12 and the housing assembly 23. Since there is no elastic cover 12 to share the stress at this point, the insertion portion 15 experiences greater stress and is prone to failure. Referring to Figure 8, in one embodiment, the insertion portion 15 is connected to the end of the clamping member 11 near the fixing member 21. In a reference section perpendicular to the extension direction, the cross-sectional dimension of the insertion portion 15 is larger than that of the clamping member 11. This reduces the cross-sectional stress of the insertion portion 15 at the connection between the headband assembly 10 and the fixing member 21, making the insertion portion 15 less prone to failure and thus improving the reliability of the connection between the insertion portion 15 and the fixing member 21.

[0054] In one embodiment, as shown in FIG8, the second locking hole 151 connects the opposite sides of the plug-in portion 15. The connection area formed by the clamping member 11 and the plug-in portion 15 is located outside the second locking hole 151, which can reduce the weakening of the connection area between the clamping member 11 and the plug-in portion 15 by opening the second locking hole 151, thereby ensuring the reliability of the connection between the clamping member 11 and the plug-in portion 15.

[0055] Referring to Figure 7, in one embodiment, in the wearing state, the first housing 24 is positioned close to the user's head, and the second housing 25 is positioned away from the user's head. When the first housing 24 and the second housing 25 enclose the telescopic cavity 231, the seam between the first housing 24 and the second housing 25 avoids the side of the fixing component 21 that contacts the user's head. For example, the seam between the first housing 24 and the second housing 25 can be located on the side of the fixing component 21 near the top of the head and the side near the chin, which can improve the wearing comfort of the headphones 100. The first housing 24 has a positioning groove 247 on the side facing the user's head, and the fixing component 21 also includes a detachable fitting member 212 disposed within the positioning groove 247, which is used to abut against the user's head. This design serves two purposes: firstly, the fitting element 212 can cover the outside of the locking element 211, preventing the locking element 211 from being exposed on the fixing component 21 and affecting the product's appearance; secondly, when the headphones 100 are worn, in addition to the speaker assembly 30 fitting against the user's head, the fitting element 212 also fits against the user's head, increasing the contact points between the headphones 100 and the user's head, making the headphones 100 more comfortable and stable to wear; furthermore, the fitting element 212 is detachable, facilitating its replacement, or multiple sets of fitting elements 212 can be provided, allowing the user to select the most comfortable fitting element 212 to install into the positioning slot 247. Optionally, the fitting element 212 may include an elastic material, allowing it to undergo a certain amount of elastic compression deformation under the clamping force of the clamping member 11, thereby increasing the contact area between the fitting element 212 and the user's head and further improving the comfort of wearing the headphones 100.

[0056] Optionally, the wire harness 14 extends from the outside of the fixed assembly 21 to the telescopic assembly 22 and is fixed to the telescopic assembly 22 for electrical connection with the speaker assembly 30. This arrangement reduces the space occupied by the wire harness 14 inside the fixed assembly 21, which is beneficial for miniaturization of the fixed assembly 21.

[0057] Optionally, as shown in Figure 10, the wire harness 14 enters the fixing component 21 from the first end near the headband assembly 10 and exits the fixing component 21 from the second end near the speaker assembly 30, with the wire harness 14 electrically connected to the speaker assembly 30. This arrangement allows the wire harness 14 to be hidden inside the fixing component 21, resulting in neater wiring and reducing its impact on the product's appearance, thus enhancing the product's aesthetic appeal.

[0058] Optionally, the fixing component 21 has a wiring channel that extends through the fixing component 21 along the telescopic direction of the telescopic member 221. The wire harness 14 passes through the wiring channel, thereby hiding the wire harness 14 inside the fixing component 21 and reducing the impact of the wire harness 14 on the product appearance. For example, the wire harness 14 enters the telescopic cavity 231 from the first end of the fixing component 21 near the headband assembly 10 and exits the telescopic cavity 231 from the second end of the fixing component 21 near the speaker assembly 30, so that the wire harness 14 is hidden inside the fixing component 21 through the telescopic cavity 231, and the space of the telescopic cavity 231 can be fully utilized for wiring. Since the telescopic member 221 is slidably accommodated in the telescopic cavity 231, in order to avoid interference between the telescopic member 221 and the wire harness 14 when the telescopic member 221 moves, an isolator can be provided in the telescopic cavity 231 to isolate the telescopic member 221 from the wire harness 14.

[0059] Optionally, the wire harness 14 is disposed outside the telescopic cavity 231 to avoid interference between the telescopic member 221 and the wire harness 14 during movement. Referring to Figure 9, the fixing assembly 21 includes a first housing 24 and a fitting member 212. The first housing 24 encloses at least a portion of the telescopic cavity 231. That is, on a reference section perpendicular to the telescopic direction, the projection of the telescopic cavity 231 can fall entirely into the first housing 24, in which case the first housing 24 independently encloses the entire telescopic cavity 231; the projection of the telescopic cavity 231 can also partially fall into the first housing 24, in which case the first housing 24, together with other components, forms the telescopic cavity 231, for example, the first housing 24 and the second housing 25 together form the telescopic cavity 231. The portion of the wire harness 14 located between the first and second ends of the fixing assembly 21 is visible from the outside of the first housing 24 and is covered by the fitting member 212. With this configuration, on the one hand, the wire harness 14 can be placed outside the telescopic cavity 231 to avoid interference between the telescopic component 221 and the wire harness 14 when it moves; on the other hand, the fitting component 212 covers the part of the wire harness 14 exposed outside the first housing 24, hiding the wire harness 14 between the first housing 24 and the fitting component 212. By utilizing the space formed by the first housing 24 and the fitting component 212 to route the wires, the impact of the wire harness 14 on the product appearance can be reduced.

[0060] Optionally, the visible portion of the wire harness 14 is attached to the surface of the first housing 24 near the bonding member 212 and fixed with tape or glue, which makes the wire harness 14 less prone to displacement.

[0061] In one embodiment, as shown in Figures 9-12, a first telescopic groove 246 is formed on one side of the first housing 24, and a wiring groove 2411 is provided on the other side of the first housing 24 away from the first telescopic groove 246. The wire harness 14 is embedded in the wiring groove 2411, and the fitting member 212 covers the wiring groove 2411. By providing the wiring groove 2411, on the one hand, the wire harness 14 is embedded in the wiring groove 2411, and the groove wall of the wiring groove 2411 can restrict the lateral displacement of the wire harness 14, making it difficult for the wire harness 14 to shift; on the other hand, relative to the surface of the first housing 24 where the wire harness 14 is attached, the thickness of the first housing 24 itself in the direction perpendicular to the telescopic direction can be fully utilized to accommodate the wire harness 14, thereby reducing the size of the housing assembly 23 in this direction, which is beneficial to the miniaturization of the product.

[0062] In the wearing state, the fitting member 212 is disposed on the side of the first housing 24 near the head, and is used to abut against the side of the head to achieve auxiliary positioning of the headband assembly 10 on the head, making the wearing of the headphones 100 more comfortable and stable. Specifically, in the wearing state of the headphones 100, in addition to the speaker assembly 30 fitting against the user's head, the fitting member 212 also fits against the user's head, increasing the contact points between the headphones 100 and the user's head, thereby making the wearing of the headphones 100 more comfortable and stable. Optionally, the fitting member 212 includes an elastic material, and under the clamping force of the clamping member 11, the fitting member 212 can undergo a certain amount of elastic compression deformation, thereby increasing the contact area between the fitting member 212 and the user's head, further improving the wearing comfort of the headphones 100.

[0063] Referring to Figures 9-12, the first housing 24 has a first vertical direction perpendicular to the telescopic direction of the telescopic member 221, and a second vertical direction perpendicular to both the telescopic direction and the first vertical direction. The first housing 24 includes two side walls 241 spaced apart from each other along the first vertical direction, and a bottom wall 242 connecting the two side walls 241 along the first vertical direction. The thickness of the two side walls 241 along the second vertical direction is greater than the thickness of the bottom wall 242 along the second vertical direction, forming a first telescopic groove 246 between the two side walls 241. Optionally, a wiring groove 2411 is formed on the bottom wall 242. The bottom wall 242 connects between the two side walls 241, making the wiring position of the wire harness 14 relatively centered, which can reduce the bending of the wire harness 14, shorten the length of the wire harness 14, and save material usage.

[0064] In one embodiment, as shown in Figures 9-12, the projection of the wiring groove 2411 along the second vertical direction at least partially falls within one of the two side walls 241, such that the wiring groove 2411 is at least partially formed on the side wall 241. This allows full utilization of the larger thickness of the side wall 241 in the second vertical direction. Compared to the wiring groove 2411 being formed on the bottom wall 242, this reduces the thickness of the bottom wall 242 in the second vertical direction, which is beneficial for product miniaturization.

[0065] Referring to Figure 9, in one embodiment, the projections of the wiring groove 2411 and the first telescopic groove 246 along the first vertical direction at least partially overlap. With this configuration, given a fixed size for the wiring groove 2411, the size of the sidewall 241 protruding towards the fitting member 212 can be reduced, thereby reducing the size of the sidewall 241 along the second vertical direction, which is beneficial for product miniaturization.

[0066] In one embodiment, as shown in Figures 9-12, a reducing groove 2412 is also provided on the side of the first housing 24 opposite to the first telescopic groove 246. The projection of the reducing groove 2412 along the second vertical direction at least partially falls within the other of the two side walls 241. When a wiring groove 2411 is provided on one side wall 241, the width of the side wall 241 in the first vertical direction is relatively large in order to accommodate the wire bundle 14. Generally, in order to make the appearance of the first housing 24 more aesthetically pleasing, the two side walls 241 can be symmetrically arranged about the bottom wall 242. Therefore, the width of the other side wall 241 in the first vertical direction is comparable to the width of the side wall 241 with the wiring groove 2411 in the first vertical direction, that is, the width of the other side wall 241 is also relatively large. By providing the reducing groove 2412, the wall thickness of the other side wall 241 can be reduced, making the wall thickness more uniform and reducing deformation during the injection molding cooling process.

[0067] In one embodiment, along the telescopic direction, the lengths of both the wiring groove 2411 and the adhesive reduction groove 2412 are not less than 50% of the lengths of the two side walls 241. As shown in FIG13, if the length l1 of the wiring groove 2411 is less than 50% of the length l of the side wall 241, the wire bundle 14 visible from the outside of the first housing 24 will have a longer length outside the wiring groove 2411, and the lateral displacement of the wire bundle 14 will lack constraint, making it easy for the wire bundle 14 to shift. By setting the length of the wiring groove 2411 to be not less than 50% of the length of the two side walls 241, as many wire bundles 14 visible from the outside of the first housing 24 as possible can be embedded in the wiring groove 2411, and the lateral displacement of the wire bundle 14 can be restricted by the groove wall of the wiring groove 2411, making it less likely for the wire bundle 14 to shift. If the length l2 of the shrinkage groove 2412 is less than 50% of the length l of the two side walls 241, the length of the shrinkage groove 2412 on the first housing 24 will be relatively short, which will lead to uneven wall thickness in some areas and make it easy to deform during injection molding and cooling. Optionally, the lengths of the wiring groove 2411 and the shrinkage groove 2412 are 60%, 70%, 80%, or 90% of the length of the two side walls 241, etc., and no specific limitation is made here.

[0068] Furthermore, the length of the portion of the wiring groove 2411 that falls into one of the two side walls 241 is not less than 50% of the length of the wiring groove 2411, and the length of the portion of the reducing groove 2412 that falls into the other of the two side walls 241 is not less than 50% of the length of the reducing groove 2412. This arrangement ensures that the wiring groove 2411 and the reducing groove 2412 are positioned as much as possible on the side walls 241. Placing the wiring groove 2411 on the side wall 241 allows full utilization of the larger thickness of the side wall 241 in the second vertical direction. Compared to placing the wiring groove 2411 on the bottom wall 242, this reduces the thickness of the bottom wall 242 in the second vertical direction, which is beneficial for product miniaturization. Placing the reducing groove 2412 on the other side wall 241 where the wiring groove 241 is not located reduces the wall thickness of the other side wall 241, resulting in a more uniform wall thickness and reducing deformation during injection molding and cooling. Optionally, the length of the portion of the cable tray 2411 and the adhesive reduction tray 2412 that falls into the side wall 241 is 60%, 70%, 80% or 90% of the length of the side wall 241.

[0069] Optionally, the wiring channel 2411 extends through the first housing 24 in the telescopic direction, so that the wire harness 14 can pass through the wiring channel 2411 into the first end of the fixing component 21 and exit the wiring channel 2411 from the second end of the fixing component 21.

[0070] Referring to Figures 9-12, optionally, the first housing 24 and / or the second housing 25 are provided with insertion holes 232 for engaging with the headband assembly 10. The wire harness 14 passes through the insertion holes 232 into the space enclosed by the first housing 24 and the second housing 25. By using the insertion holes 232 to pass the wire harness 14, the number of openings on the housing assembly 23 can be reduced, thereby reducing the impact of the openings on the appearance of the housing assembly 23. The first housing 24 is also provided with a first wiring hole 2422 near the first end of the fixing assembly 21 and communicating with the wiring groove 2411. The wire harness 14 further extends through the first wiring hole 2422 to the other side of the first housing 24 away from the first telescopic groove 246. By providing a first wiring hole 2422, the wire harness 14 extends through the first wiring hole 2422 to the other side of the first housing 24 away from the first telescopic groove 246. On the one hand, this allows the wire harness 14 to be located outside the telescopic cavity 231, avoiding interference between the telescopic member 221 and the wire harness 14 during movement. On the other hand, the wall of the first wiring hole 2422 can restrict the lateral movement of the wire harness 14 and limit the wire harness 14 at the point where it enters the fixing component 21, making the position of the wire harness 14 relatively fixed and preventing displacement. For example, the first wiring hole 2422 is formed on the bottom wall 242, and the first wiring hole 2422 penetrates two oppositely arranged surfaces of the bottom wall 242 along a second vertical direction. The first wiring hole 2422 can be arranged adjacent to the first locking hole 2421.

[0071] Referring to Figures 9-12, the first housing 24 includes two end walls 243 spaced apart from each other along the telescopic direction and connecting the two side walls 241. The end walls 243, the side walls 241, and the bottom wall 242 can be enclosed to form a positioning groove 247 for mounting the fitting member 212. The first housing 24 also has a second wiring hole 2431 near the second end of the fixing assembly 21 and communicating with the wiring groove 2411. The second wiring hole 2431 penetrates the side wall 241 and / or the end wall 243 near the second end of the fixing assembly 21, and the wire harness 14 further extends to the speaker assembly 30 via the second wiring hole 2431. Specifically, the second wiring hole 2431 can penetrate the side wall 241, or it can penetrate the end wall 243, or a portion of the second wiring hole 2431 can penetrate the side wall 241 and another portion can penetrate the end wall 243. By positioning the second wiring hole 2431 on the side wall 241 and / or end wall 243 near the second end of the fixing component 21, the wire harness 14 can exit from the fixing component 21 as close as possible to the side where the speaker assembly 30 is located, reducing the length of the wire harness 14 exposed on the fixing component 21, which helps to reduce the impact of the wire harness 14 on the product appearance. In addition, the hole wall of the second wiring hole 2431 can restrict the lateral movement of the wire harness 14 and limit the wire harness 14 at the point where it exits the fixing component 21, so that the position of the wire harness 14 is relatively fixed and the wire harness 14 is not easy to shift.

[0072] Optionally, the opening direction of the second wiring hole 2431 is set at an angle to the extension direction of the wiring groove 2411. Generally, the telescopic member 221 usually enters the telescopic cavity 231 from the middle region of the second end of the housing assembly 23, which can make the product look more aesthetically pleasing. Setting the opening direction of the second wiring hole 2431 at an angle to the extension direction of the wiring groove 2411 allows the wire harness 14 to exit from the fixing assembly 21 away from the telescopic member 221. For example, the exit position of the wire harness 14 can be set on the side of the telescopic member 221. For example, in the wearing state, the second wiring hole 2431 is opened on the side of the user's head away from the face, so that the telescopic member 221 can partially cover the wire harness 14, thereby reducing the impact of the wire harness 14 on the product's appearance after exiting the fixing assembly 21. When the opening direction of the second wiring hole 2431 is set at an angle to the extension direction of the wiring groove 2411, the wire harness 14 bends at the point where it exits the fixing component 21, which has a certain impact on the wiring process. Further, the first housing 24 has a wire alignment groove 2423, which connects to the second wiring hole 2431, and the extension direction of the wire alignment groove 2423 is the same as the opening direction of the second wiring hole 2431. For example, as shown in FIG11, the wire alignment groove 2423 can be at least partially located on the bottom wall 242. When assembling the wire harness 14, the wire alignment groove 2423 can guide the wire harness 14 into the second wiring hole 2431, thereby facilitating the assembly and alignment of the wire harness 14 and improving assembly efficiency.

[0073] The length of the wire harness 14 located outside the second end of the fixed component 21 is greater than the maximum elongation of the telescopic member 221, which can prevent the telescopic member 221 from pulling the wire harness 14 during telescopic movement, thereby improving the service life of the wire harness 14.

[0074] Referring to Figure 10, the fixing component 21 includes a first limiting member 213, which is sleeved on the wire harness 14. Exemplarily, the first limiting member 213 is a snap-fit ​​or snap ring, made of plastic or metal, to facilitate its sleeve on the wire harness 14 and fix it relative to the wire harness 14. The first housing 24 also has a wire harness limiting groove 2424 adjacent to the second wiring hole 2431 at the opening of the wiring groove 2411, and the first limiting member 213 engages within the wire harness limiting groove 2424. By providing the wire harness limiting groove 2424 to restrict the displacement of the first limiting member 213, and since the first limiting member 213 is sleeved on the wire harness 14 and fixed relative to the wire harness 14, the wire harness limiting groove 2424 can restrict the displacement of the wire harness 14, making it difficult for the wire harness 14 to be pulled out of the fixing component 21.

[0075] Optionally, the wire harness 14 extends out of the fixing component 21 from the second end near the speaker assembly 30, and then enters the speaker assembly 30 via the end connected to the telescopic member 221 for electrical connection. With this configuration, the portion of the wire harness 14 between the second end of the fixing component 21 near the speaker assembly 30 and the speaker assembly 30 is exposed to the air. This portion of the wire harness 14 is not constrained by the telescopic member 221. When the telescopic member 221 moves towards the headband assembly 10, the wire harness 14 has a larger free deformation length, increasing the length of the bent section and preventing the bent section from being too short, thus affecting its service life.

[0076] In one embodiment, as shown in FIG10, the telescopic member 221 is provided with a third wiring hole 2211. The wire harness 14 passes through the third wiring hole 2211 into the telescopic component 22, which can hide the wire harness 14 inside the telescopic component 22. While ensuring that the telescopic member 221 can extend and retract freely, the length of the exposed part of the wire harness 14 is minimized to reduce the impact of the exposed wire harness 14 on the product appearance. Optionally, the telescopic member 221 is provided with a cover to fix the wire harness 14 on the telescopic member 221 and prevent the wire harness 14 from being exposed in the telescopic component 22. Further, the telescopic component 22 also includes a second limiting member 223, which is sleeved on the wire harness 14 and interferes with the third wiring hole 2211 on the side near the speaker assembly 30. The second limiting member 223 can be a buckle or a retaining ring, and its material can be plastic or metal, so that the second limiting member 223 can be sleeved on the wire harness 14, so that the second limiting member 223 and the wire harness 14 are relatively fixed. Optionally, the second limiting member 223 can be set in the same way as the first limiting member 213 to reduce the types of materials. By setting the second limiting member 223 to cooperate with the third wiring hole 2211, the displacement of the wire harness 14 can be restricted, so that the wire harness 14 is not easily pulled out of the telescopic component 22.

[0077] To prevent the telescopic member 221 from pulling the wire harness 14 during its telescopic movement, the length of the wire harness 14 located outside the second end of the fixed component 21 is greater than the maximum elongation of the telescopic member 221. When the telescopic member 221 moves towards the headband assembly 10, this portion of the wire harness 14 bends, and the conductive medium (such as metal wire) inside the wire harness 14 bends accordingly. Adjusting the distance between the speaker assembly 30 and the headband assembly 10 by using the telescopic member 221 will cause the wire harness 14 located outside the second end of the fixed component 21 to bend repeatedly, which may lead to fatigue failure of the conductive medium, such as metal wire breakage, thereby affecting the reliability of the electrical connection between the wire harness 14 and the speaker assembly 30.

[0078] Referring to Figure 10, in one embodiment, the wire harness 14 includes multiple wires 141 and an insulating sheath 142. The multiple wires 141 extend from the headband assembly 10 to the speaker assembly 30. The wires 141 may include a conductive medium, and the insulating sheath 142 may be made of an elastic material such as silicone or rubber. The insulating sheath 142 covers the multiple wires 141 within the wire harness limiting groove 2424 and on the side of the wire harness limiting groove 2424 facing the speaker assembly 30. By covering the multiple wires 141 with the insulating sheath 142, when the telescopic member 221 extends or retracts, the insulating sheath 142 bends synchronously with the multiple wires 141. Because the insulating sheath 142 has a certain thickness and is located outside the multiple wires 141, the bending section of the wires 141 is not too short, thereby reducing the probability of fatigue failure of the wires 141 and increasing their service life. The multiple wires 141 on the headband assembly 10 side of the wire harness limiting groove 2424 are not covered with insulating sheaths 142, which can reduce the cross-sectional area of ​​the wire harness 14, thereby reducing the space occupied by the wire harness 14 in the fixing assembly 21 and facilitating product miniaturization. Optionally, the multiple wires 141 on the headband assembly 10 side of the wire harness limiting groove 2424 are covered with an adhesive film. The thickness of the adhesive film is significantly smaller than that of the insulating sheath 142, for example, the thickness of the adhesive film is less than 10% of the thickness of the insulating sheath 142. The adhesive film gathers the multiple wires 141 together to form a wire harness 14, which facilitates the assembly of the wires 141.

[0079] In one embodiment, as shown in FIG7, the telescopic assembly 22 includes a telescopic member 221 and at least two damping portions 222. One end of the telescopic member 221 is slidably accommodated within the telescopic cavity 231, and the other end of the telescopic member 221 is connected to the speaker assembly 30. At least two damping portions 222 are spaced apart on the telescopic member 221 along its circumference, and each damping portion 222 elastically abuts against the cavity wall of the telescopic cavity 231 in different directions. The damping portions 222 may include an elastic material, such as silicone or rubber. Each damping portion 222 may be interference-fitted with the cavity wall of the telescopic cavity 231, and the damping portion 222 undergoes elastic deformation, so that the telescopic member 221 has a certain resistance when sliding within the telescopic cavity 231, making it easier for the user to perceive the relative sliding between the telescopic member 221 and the fixed assembly 21, and improving the feel when adjusting the distance between the speaker assembly 30 and the headband assembly 10 through the telescopic member 221. At least two damping parts 222 are provided on the telescopic member 221 at intervals along the circumference of the telescopic member 221. Each damping part 222 elastically abuts against the cavity wall of the telescopic cavity 231 in different directions, so that there are at least two contact points between the outer periphery of the telescopic member 221 and the cavity wall of the telescopic cavity 231. The cavity wall forms at least two supporting forces on the telescopic member 221, and the directions of the at least two supporting forces are different. The cavity wall provides multi-point support for the telescopic member 221, so that the force on the telescopic member 221 is more uniform when it slides in the telescopic cavity 231, which can reduce the possibility of jamming during the telescopic stroke and make the distance adjustment between the speaker assembly 30 and the headband assembly 10 smoother.

[0080] Optionally, the number of damping parts 222 can be 2, 3, or 4, and no specific limitation is made here. The more damping parts 222 there are, the greater the supporting force that the cavity wall exerts on the telescopic member 221, and the different directions of the supporting force. The cavity wall provides multi-point support for the telescopic member 221, which allows the support pads to be more evenly distributed on the outer periphery of the telescopic member 221, and the force on the telescopic member 221 is more uniform when it slides in the telescopic cavity 231.

[0081] Optionally, as shown in Figure 8, two damping parts 222 are provided, including a first damping part 222a and a second damping part 222b. Providing two damping parts 222 ensures more even force distribution when the telescopic member 221 slides within the telescopic cavity 231, and also reduces the manufacturing difficulty of the telescopic assembly 22. The first damping part 222a and the second damping part 222b protrude from opposite sides of the telescopic member 221, with the extension directions of the first damping part 222a and the second damping part 222b being opposite. This ensures that the supporting effect of the first damping part 222a and the second damping part 222b on the telescopic member 221 is located on both sides of the telescopic member 221, resulting in symmetrical force distribution when the telescopic member 221 slides within the telescopic cavity 231, thereby reducing the possibility of jamming during the telescopic stroke.

[0082] Optionally, the housing assembly 23 is a one-piece structure. For example, the housing assembly 23 is integrally formed by injection molding, and a telescopic cavity 231 is formed inside it. The one-piece structure of the housing assembly 23 has good integrity, and the cavity wall of the telescopic cavity 231 can be relatively smooth, which facilitates the abutment and cooperation with the damping part 222, and the extension direction of the damping part 222 is less restricted.

[0083] In one embodiment, as shown in Figures 7 and 8, the housing assembly 23 includes a first housing 24 and a second housing 25, which together form a telescopic cavity 231. The housing assembly 23 is designed as a separate unit, with the telescopic cavity 231 formed by the first housing 24 and the second housing 25. This allows the telescopic cavity 231 to be formed by an open groove, reducing the manufacturing difficulty compared to integral molding of the housing assembly 23. One of the first housing 24 and the second housing 25 is positioned close to the user's head when worn, while the other is positioned away from the user's head. This ensures that when the first housing 24 and the second housing 25 form the telescopic cavity 231, the seam between them avoids the side of the fixing component 21 that contacts the user's head. For example, the seam between the first housing 24 and the second housing 25 can be located on the side of the fixing component 21 near the top of the head and the side near the chin, improving the wearing comfort of the headphones 100.

[0084] Furthermore, the first damping part 222a and the second damping part 222b elastically abut against the first housing 24 and the second housing 25, respectively. Specifically, the first damping part 222a can abut against one of the first housing 24 and the second housing 25, and the second damping part 222b can abut against the other of the first housing 24 and the second housing 25. The seam between the first housing 24 and the second housing 25 can be located on the side of the fixing component 21 near the top of the head and the side near the chin, which can improve the wearing comfort of the headphones 100. By setting the first damping part 222a and the second damping part 222b to elastically abut against the first housing 24 and the second housing 25, the damping part 222 can avoid the seam between the first housing 24 and the second housing 25 when it abuts against the cavity wall of the telescopic cavity 231, preventing unevenness at the seam from causing uneven force when the telescopic component 221 slides in the telescopic cavity 231.

[0085] Optionally, the damping portion 222 is integrally formed on the telescopic member 221. For example, at least two protrusions are spaced apart circumferentially along the telescopic member 221, and the protrusions are covered with an elastic material, such as silicone or rubber, thereby forming the damping portion 222; or, the protrusions are coated with adhesive or a film to form the damping portion 222. By integrally forming the damping portion 222 with the telescopic member 221, the telescopic assembly 22 has better overall integrity.

[0086] Optionally, the damping part 222 and the telescopic member 221 are processed separately before being assembled and connected. By making the damping part 222 and the telescopic member 221 separate, they can be made of different materials and processed separately. For example, the damping part 222 can be made of a relatively low-hardness elastic material, such as silicone or rubber, so that the damping part 222 has a certain degree of elasticity, which can improve the feel when adjusting the distance between the speaker assembly 30 and the headband assembly 10 through the telescopic member 221. Correspondingly, the telescopic member 221 can be made of a relatively high-hardness material, such as plastic or metal, so that the telescopic member 221 has higher strength, which can improve the service life of the telescopic member 221.

[0087] Optionally, the damping part 222 is bonded to the telescopic member 221. Alternatively, the telescopic member 221 has at least one mounting hole 2212, and the first damping part 222a and the second damping part 222b are inserted into the at least one mounting hole 2212 with an interference fit, as shown in Figure 8. Specifically, there can be two mounting holes 2212, with one mounting hole 2212 on each of the opposite sides of the telescopic member 221, and one damping part 222 installed in each mounting hole 2212. The mounting hole 2212 can be a through hole or a blind hole. Alternatively, there can be one mounting hole 2212, which extends through both sides of the telescopic member 221. The first damping part 222a and the second damping part 222b are respectively inserted into the two opposite openings of the mounting hole 2212 with an interference fit, so that the first damping part 222a and the second damping part 222b protrude from the opposite sides of the telescopic member 221. Mounting holes 2212 are made on the telescopic component 221 to mount the damping part 222. The damping part 222 can be installed simply by inserting it into the mounting holes 2212. On the one hand, the mounting holes 2212 can be used for positioning when assembling the damping part 222, which facilitates the installation and alignment of the damping part 222. On the other hand, after the damping part 222 is assembled into the mounting holes 2212, the wall of the mounting holes 2212 can also fix the damping part 222. The damping part 222 can be connected to the telescopic component 221 without the need for glue, making the assembly more convenient and quick.

[0088] In one embodiment, as shown in Figures 8 and 14, there is one mounting hole 2212, which connects the opposite sides of the telescopic member 221. The first damping part 222a and the second damping part 222b are connected to each other to form an integral part, which is inserted into the mounting hole 2212 with an interference fit. By setting the first damping part 222a and the second damping part 222b to form an integral part, the first damping part 222a and the second damping part 222b can be integrally processed, which not only facilitates the processing of both parts and simplifies the processing technology of the damping part 222, but also enhances the overall integrity of the damping part 222.

[0089] Optionally, in a reference section perpendicular to the axial direction of the mounting hole 2212, the cross-sectional dimension of the first damping part 222a is larger than that of the second damping part 222b. Correspondingly, the cross-sectional dimension of the end of the mounting hole 2212 where the first damping part 222a is inserted is larger than that of the end where the second damping part 222b is inserted. When installing the damping part 222, on the one hand, the installation direction of the damping part 222 can be quickly identified by the difference in cross-sectional dimensions, thereby improving assembly efficiency; on the other hand, the second damping part 222b, which has a relatively smaller cross-sectional dimension, can be placed into the end of the mounting hole 2212 where the first damping part 222a is inserted. The resistance of the hole wall of the mounting hole 2212 to the second damping part 222b is small, which facilitates the insertion of the damping part 222, thereby further improving assembly efficiency.

[0090] Optionally, as shown in FIG15, the telescopic assembly 22 further includes a holding portion 224 connected to the second damping portion 222b. In a reference plane perpendicular to the axial direction of the mounting hole 2212, the cross-sectional dimension of the holding portion 224 is smaller than the cross-sectional dimension of the mounting hole 2212. The holding portion 224 is used to assist in the installation of the integral component. For example, the holding part 224 can be integrally formed on the second damping part 222b, and its shape can be elongated, such as a strip, to facilitate gripping the holding part 224 and dragging the integral part into the mounting hole 2212. After the integral part is installed in place relative to the mounting hole 2212, the holding part 224 can be removed. Alternatively, the holding part 224 has an opening or groove to thread (or sleeve) a pull rope or hook, and the integral part is dragged into the mounting hole 2212 by gripping the pull rope or hook. After the integral part is installed in place relative to the mounting hole 2212, the pull rope or hook is removed, and the holding part 224 can remain in the second damping part 222b. By providing the holding part 224 to assist in the installation of the integral part, assembly efficiency can be improved.

[0091] Please refer to Figures 8, 14, and 15. In one embodiment, a limiting groove 2221 is formed along the circumference of the mounting hole 2212 of the integral component. A second limiting flange 226 is provided along the circumference of the mounting hole 2212 on the inner wall of the mounting hole 2212. The second limiting flange 226 is embedded in the limiting groove 2221 to limit the integral component along the axial direction of the mounting hole 2212, so that the integral component is not easy to fall off from the mounting hole 2212, and the connection between the integral component and the telescopic component 221 is more reliable.

[0092] The portion of the telescopic member 221 housed within the telescopic cavity 231 may have a circular, elliptical, or polygonal cross-section perpendicular to the telescopic direction. Optionally, the portion of the telescopic member 221 housed within the telescopic cavity 231 has a thickness direction and a width direction, with the width direction dimension being larger than the thickness direction dimension. Its cross-section perpendicular to the telescopic direction may be rectangular, and the mounting hole 2212 connects the opposite sides of the telescopic member 221 along the thickness direction. By setting the mounting hole 2212 along the thickness direction of the telescopic member 221 and having a width direction dimension larger than the thickness direction dimension, the opening area of ​​the mounting hole 2212 can be relatively large, thereby accommodating a relatively large damping part 222. This increases the contact area between the damping part 222 and the cavity wall of the telescopic cavity 231, resulting in more uniform force distribution on the telescopic member 221 when sliding within the telescopic cavity 231, and reducing the possibility of jamming during the telescopic stroke.

[0093] Optionally, as shown in Figure 8, a limiting protrusion 225 is provided at the end of the telescopic member 221 away from the speaker assembly 30. The limiting protrusion 225 is used to restrict the telescopic member 221 from sliding out of the telescopic cavity 231, and the mounting hole 2212 is formed on the limiting protrusion 225. With this configuration, on the one hand, the limiting protrusion 225 cooperates with the cavity wall of the telescopic cavity 231, which can limit the maximum telescopic stroke of the telescopic member 221 when it slides towards the end of the speaker assembly 30, preventing the telescopic member 221 from sliding out of the telescopic cavity 231; on the other hand, the mounting hole 2212 formed on the limiting protrusion 225 can reinforce the opening of the mounting hole 2212, reducing the weakening effect of the mounting hole 2212 on the telescopic member 221, and preventing the telescopic member 221 from being damaged by the mounting hole 2212. The opening fails; in addition, the limiting protrusion 225 protrudes from the telescopic member 221, and the mounting hole 2212 is opened on the limiting protrusion 225. When the integral part is inserted into the mounting hole 2212, the limiting protrusion 225 surrounds the outer periphery of the damping part 222. The limiting protrusion 225 forms a protective shell for the damping part 222, so that the outer periphery of the damping part 222 at the maximum telescopic stroke of the telescopic member 221 will not touch the end wall of the telescopic cavity 231, which can improve the service life of the damping part 222.

[0094] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. An earphone, characterized by comprising: The application relates to a headband assembly, a connecting assembly and a speaker assembly. The headband assembly is arranged around the periphery of the top of a user's head in a wearing state and provides clamping force. The connecting assembly comprises a fixed assembly connected with the headband assembly and a telescopic assembly connected with the speaker assembly, the telescopic assembly has a telescopic direction relative to the fixed assembly, the fixed assembly comprises a shell assembly and a locking member, the shell assembly comprises a first shell and a second shell which enclose a telescopic cavity, the telescopic assembly comprises a telescopic member, one end of the telescopic member is slidably arranged in the telescopic cavity along the telescopic direction, and the other end of the telescopic member is connected with the speaker assembly. The shell assembly is provided with a plug hole, the headband assembly is provided with a plug part which is arranged in the plug hole along the telescopic direction, the locking member is arranged to lock the first shell and the plug part along the telescopic direction, the second shell is provided with a first limiting part and a second limiting part, the first limiting part is used for limiting the movement of the second shell towards the side where the headband assembly is located, and the second limiting part is used for limiting the movement of the second shell towards the side where the speaker assembly is located.

2. The earphone of claim 1, wherein One of the first shell and the second shell is provided with a limiting sliding groove extending along the telescopic direction, and the other of the first shell and the second shell is provided with a first limiting flange which is arranged in the limiting sliding groove, so that the second shell and the first shell are limited to separate from each other in the direction perpendicular to the telescopic direction while being allowed to slide relative to each other along the telescopic direction.

3. The earphone of claim 1, wherein, The first limiting part is arranged in the space enclosed by the first shell and the second shell, and the plug part abuts against the first limiting part along the telescopic direction.

4. The earphone of claim 1, wherein The second limiting part is arranged on the outside of the second shell and at least partially overlaps with the plug hole along the telescopic direction.

5. The earphone of claim 1, wherein, The first shell is provided with a first locking hole, and the plug part is provided with a second locking hole, the first locking hole and the second locking hole are coincident with each other after the plug part is assembled in place relative to the first shell, and the locking member is arranged in the first locking hole and the second locking hole.

6. The earphone of claim 5, wherein, The first shell is provided with a reinforcing protrusion which protrudes towards the side where the second shell is located, and the first locking hole is arranged on the reinforcing protrusion. The reinforcing protrusion forms part of the cavity wall of the telescopic cavity which is close to the end of the telescopic cavity near the headband assembly, so as to limit the telescopic stroke of the telescopic member towards the side where the headband assembly is located.

7. The earphone according to any one of claims 1-6, characterized in that The locking member is arranged not to be in direct contact with the second shell.

8. The earphone of claim 1, wherein, The headband assembly further comprises a clamping member which is arranged around the periphery of the top of a user's head in a wearing state and provides clamping force, the plug part is connected to one end of the clamping member which is close to the fixed assembly, and the cross-sectional dimension of the plug part is greater than that of the clamping member in a reference cross section perpendicular to the telescopic direction.

9. The earphone of claim 8, wherein, The second locking hole is communicated with two opposite sides of the plug-in part, and a connecting area formed by the clamping member and the plug-in part is located outside the second locking hole.

10. The earphone of claim 1, wherein, In the wearing state, the first shell is arranged close to the head of the user, and the second shell is arranged away from the head of the user, the first shell is provided with a positioning groove on the side facing the head of the user, and the fixing assembly further comprises a fitting member arranged in the positioning groove in a detachable manner, and the fitting member is used for abutting against the head of the user.

11. An earphone, characterized by Comprise: A headband assembly, a connecting assembly and a speaker assembly, the headband assembly is arranged around the periphery of the head of the user in the wearing state, and provides clamping force, the connecting assembly is connected between the headband assembly and the speaker assembly; The connecting assembly comprises a fixing assembly and a telescopic assembly, the fixing assembly is connected with the headband assembly, and the telescopic assembly comprises a telescopic member, one end of the telescopic member is telescopically connected with the fixing assembly, and the other end of the telescopic member is connected with the speaker assembly; The headband assembly comprises a wire bundle, the wire bundle penetrates into the fixing assembly from a first end of the fixing assembly close to the headband assembly, and penetrates out of the fixing assembly from a second end of the fixing assembly close to the speaker assembly, and the wire bundle is electrically connected with the speaker assembly.

12. The earphone of claim 11, wherein, The fixing assembly is provided with a telescopic cavity, one end of the telescopic member is slidably arranged in the telescopic cavity, and the wire bundle is arranged outside the telescopic cavity, the fixing assembly comprises a first shell and a fitting member, the first shell encloses to form at least part of the telescopic cavity, and the part of the wire bundle between the first end and the second end of the fixing assembly is arranged to be visible from the outside of the first shell and covered by the fitting member.

13. The earphone of claim 12, wherein, One side of the first shell is formed with a first telescopic groove, the other side of the first shell away from the first telescopic groove is provided with a wire routing groove, the wire bundle is embedded in the wire routing groove, and the fitting member covers the wire routing groove.

14. The earphone according to claim 12 or 13, characterized in that, In the wearing state, the fitting member is arranged on the side of the first shell close to the head, and is used for abutting against the side of the head to realize the auxiliary positioning of the headband assembly on the head.

15. The earphone of claim 13, wherein, The first shell has a first vertical direction perpendicular to the telescopic direction of the telescopic member, and a second vertical direction perpendicular to the telescopic direction and the first vertical direction, the first shell comprises two side walls arranged at intervals along the first vertical direction and a bottom wall connecting the two side walls along the first vertical direction, the thickness of the two side walls along the second vertical direction is greater than the thickness of the bottom wall along the second vertical direction, so as to form the first telescopic groove between the two side walls, and the projection of the wire routing groove along the second vertical direction at least partially falls in one of the two side walls.

16. The earphone of claim 15, wherein, The projections of the wire routing groove and the first telescopic groove along the first vertical direction at least partially overlap.

17. The earphone of claim 15, wherein, The other side of the first shell away from the first telescopic groove is further provided with a glue reducing groove, and the projection of the glue reducing groove along the second vertical direction at least partially falls in the other of the two side walls.

18. The earphone of claim 17, wherein, The length of the wire slot and the glue-reducing slot in the telescopic direction is not less than 50% of the length of the two side walls. The length of the part of the wire slot falling into one of the two side walls is not less than 50% of the length of the wire slot, and the length of the part of the glue-reducing slot falling into the other of the two side walls is not less than 50% of the length of the glue-reducing slot. The fixing assembly further comprises a second shell matched with the first shell, the first shell and / or the second shell is provided with a plug hole matched with the headband assembly, the wire harness is inserted into the space surrounded by the first shell and the second shell along the plug hole, the first shell is further provided with a first wire hole in communication with the wire slot and close to the first end of the fixing assembly, and the wire harness further extends to the other side of the first shell away from the first telescopic slot through the first wire hole.

19. The earphone of claim 17, wherein, The first shell comprises two end walls spaced from each other along the telescopic direction and connected to the two side walls, and the first shell is further provided with a second wire hole in communication with the wire slot and close to the second end of the fixing assembly, the second wire hole penetrates through the side walls and / or the end walls close to the second end of the fixing assembly, and the wire harness further extends to the speaker assembly through the second wire hole.

20. The earphone of claim 19, wherein, The opening direction of the second wire hole is arranged at an angle with the extension direction of the wire slot, the first shell is provided with a wire outlet alignment slot, the wire outlet alignment slot is in communication with the second wire hole, and the extension direction of the wire outlet alignment slot is the same as the opening direction of the second wire hole.

21. The earphone of claim 20, wherein, The fixing assembly comprises a first limiting member sleeved on the wire harness, and the first shell is further provided with a wire harness limiting slot adjacent to the second wire hole at the position where the wire slot is arranged.

22. The earphone of claim 21, wherein, The telescopic member is provided with a third wire hole, and the telescopic assembly further comprises a second limiting member sleeved on the wire harness and interfering with the third wire hole on the side close to the speaker assembly.

23. The earphone of claim 22, wherein, The wire harness comprises a plurality of wires and an insulation sheath, the plurality of wires extend from the headband assembly to the speaker assembly, the insulation sheath is wrapped on the plurality of wires in the wire harness limiting slot and on the side of the wire harness limiting slot close to the speaker assembly, and the plurality of wires on the side of the wire harness limiting slot close to the headband assembly are not wrapped with the insulation sheath.

24. The earphone of claim 23, wherein, The headband assembly, the connecting assembly and the speaker assembly are arranged around the periphery of the head of a user in a wearing state and provide clamping force, and the connecting assembly is connected between the headband assembly and the speaker assembly.

25. An earphone, characterized by The length of the wire slot and the glue-reducing slot in the telescopic direction is not less than 50% of the length of the two side walls. The length of the part of the wire slot falling into one of the two side walls is not less than 50% of the length of the wire slot, and the length of the part of the glue-reducing slot falling into the other of the two side walls is not less than 50% of the length of the glue-reducing slot. The fixing assembly further comprises a second shell matched with the first shell, the first shell and / or the second shell is provided with a plug hole matched with the headband assembly, the wire harness is inserted into the space surrounded by the first shell and the second shell along the plug hole, the first shell is further provided with a first wire hole in communication with the wire slot and close to the first end of the fixing assembly, and the wire harness further extends to the other side of the first shell away from the first telescopic slot through the first wire hole. The first shell comprises two end walls spaced from each other along the telescopic direction and connected to the two side walls, and the first shell is further provided with a second wire hole in communication with the wire slot and close to the second end of the fixing assembly, the second wire hole penetrates through the side walls and / or the end walls close to the second end of the fixing assembly, and the wire harness further extends to the speaker assembly through the second wire hole. The opening direction of the second wire hole is arranged at an angle with the extension direction of the wire slot, the first shell is provided with a wire outlet alignment slot, the wire outlet alignment slot is in communication with the second wire hole, and the extension direction of the wire outlet alignment slot is the same as the opening direction of the second wire hole. The fixing assembly comprises a first limiting member sleeved on the wire harness, and the first shell is further provided with a wire harness limiting slot adjacent to the second wire hole at the position where the wire slot is arranged. The telescopic member is provided with a third wire hole, and the telescopic assembly further comprises a second limiting member sleeved on the wire harness and interfering with the third wire hole on the side close to the speaker assembly. The wire harness comprises a plurality of wires and an insulation sheath, the plurality of wires extend from the headband assembly to the speaker assembly, the insulation sheath is wrapped on the plurality of wires in the wire harness limiting slot and on the side of the wire harness limiting slot close to the speaker assembly, and the plurality of wires on the side of the wire harness limiting slot close to the headband assembly are not wrapped with the insulation sheath. The connecting assembly comprises a fixed assembly and a telescopic assembly, the fixed assembly is connected with the headband assembly and is provided with a telescopic cavity, the telescopic assembly comprises a telescopic piece and at least two damping parts, one end of the telescopic piece is slidingly accommodated in the telescopic cavity, the other end of the telescopic piece is connected with the speaker assembly, and the at least two damping parts are arranged on the telescopic piece in a circumferential direction of the telescopic piece and are spaced apart from each other, and each damping part elastically abuts against a cavity wall in a different direction of the telescopic cavity.

26. The earphone of claim 25, wherein, The damping parts comprise a first damping part and a second damping part, the first damping part and the second damping part are respectively arranged on opposite sides of the telescopic piece, and the extension direction of the first damping part is opposite to the extension direction of the second damping part.

27. The earphone of claim 26, wherein, The fixed assembly comprises a first shell and a second shell, one of the first shell and the second shell is arranged close to the head of the user in a wearing state, and the other of the first shell and the second shell is arranged away from the head of the user, the first shell and the second shell enclose the telescopic cavity, and the first damping part and the second damping part elastically abut against the first shell and the second shell respectively.

28. The earphone of claim 27, wherein, At least one mounting hole is formed in the telescopic piece, and the first damping part and the second damping part are inserted into the at least one mounting hole in an interference fit manner.

29. The earphone of claim 28, wherein, The number of the mounting hole is one, and the mounting hole communicates opposite sides of the telescopic piece, the first damping part and the second damping part are connected with each other to form an integral piece, and the integral piece is inserted into the mounting hole in an interference fit manner.

30. The earphone of claim 29, wherein, In a reference cross section perpendicular to the axial direction of the mounting hole, the cross-sectional dimension of the first damping part is greater than the cross-sectional dimension of the second damping part.

31. The earphone of claim 30, wherein, The telescopic assembly further comprises a holding part connected with the second damping part, and in a reference plane perpendicular to the axial direction of the mounting hole, the cross-sectional dimension of the holding part is smaller than the cross-sectional dimension of the mounting hole.

32. The earphone of claim 30, wherein, The integral piece is provided with a limiting groove in the circumferential direction of the mounting hole, and an inner wall of the mounting hole is provided with a second limiting flange in the circumferential direction of the mounting hole, the second limiting flange is embedded in the limiting groove to limit the integral piece in the axial direction of the mounting hole.

33. The earphone of any one of claims 29-32, wherein, The part of the telescopic piece accommodated in the telescopic cavity has a thickness direction and a width direction, the dimension of the width direction is greater than the dimension of the thickness direction, and the mounting hole communicates opposite sides of the telescopic piece in the thickness direction.

34. The earphone of claim 33, wherein, The end of the telescopic piece away from the speaker assembly is provided with a limiting protrusion for limiting the telescopic piece from sliding out of the telescopic cavity, and the mounting hole is formed in the limiting protrusion.

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