earphone

Abstract

The utility model discloses a kind of earphones, earphone includes earphone main body and connecting piece, earphone main body has first limit slot;Connecting piece is detachably connected with earphone main body by fastener, and connecting piece is used to detachably install accessory;Part of the structure of connecting piece is limited in first limit slot to limit the rotation of connecting piece around fastener.The utility model is detachably connected with the cooperation of connecting piece and first limit slot, while guaranteeing the stability of connection, allowing user to replace accessory flexibly, and reducing the abrasion of earphone main body in installation and dismounting process, preventing the loosening of connecting piece in daily use process, so that overall structure is stable and reliable, and it is convenient to replace accessory flexibly.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to an earphone. Background Technology

[0002] In related technologies, to meet users' needs for personalized decoration, mounting structures are usually set on the main body of the headphones to install accessories such as earrings and decorative pieces. Due to the wearer's daily activities, such as exercise and head turning, the headphones will shake frequently, and the accessories and mounting structures will generate mutual forces, which can easily lead to the mounting structures loosening or falling off. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an earphone that can limit the rotation of the connector, preventing the connector from loosening or detaching during daily use.

[0004] In a first aspect, embodiments of this application provide an earphone, comprising:

[0005] The earphone body has a first limiting groove;

[0006] A connector is detachably connected to the headphone body via a fastener, and the connector is used for detachably mounting accessories; a portion of the connector is confined within the first limiting groove to restrict rotation of the connector around the fastener.

[0007] The earphones according to the embodiments of the present utility model have at least the following beneficial effects: by cooperating with the detachable connector and the first limiting groove, the connection stability is ensured while allowing users to flexibly change accessories, and the wear on the earphone body during installation and disassembly is reduced, and the connector is prevented from loosening and detaching during daily use, so that the overall structure is stable and reliable and easy to flexibly change accessories.

[0008] According to the first aspect, in one possible implementation, the connector includes a first part and a second part connected to each other, the first part being connected to the headphone body via the fastener, and a portion of the structure of the second part being exposed in the first limiting groove and forming an assembly structure for detachably mounting accessories.

[0009] The first part and / or the second part are provided with a limiting structure, which is limited within the first limiting groove.

[0010] According to the first aspect, in one possible implementation, the headphone body has a mounting groove, the first limiting groove communicates with the mounting groove, and the first part is disposed in the mounting groove;

[0011] The first limiting groove is located on the side wall of the mounting groove, and the limiting structure is located on the outer edge of the first part or the second part; or,

[0012] The first limiting groove is located on the bottom wall of the mounting groove, and the limiting structure is located at the bottom of the first part.

[0013] According to the first aspect, in one possible implementation, the first limiting groove is located on the side wall of the mounting groove, the second part is connected to the outer edge of the first part, the second part includes the limiting structure and the assembly structure connected in sequence in a direction away from the first part, the limiting structure is confined within the first limiting groove, and the assembly structure is exposed outside the first limiting groove.

[0014] According to the first aspect, in one possible implementation, the first part has a first end and a second end, and the first part is spirally arranged in a direction from the first end to the second end; the first part is configured such that when the fastener passes through the first part and connects to the headphone body, the first end and the second end respectively abut against the headphone body and the fastener.

[0015] According to the first aspect, in one possible implementation, the assembly structure has a through-hole for the accessory to pass through; or,

[0016] The assembly structure has a threaded hole for threaded connection with the accessory; or...

[0017] The assembly structure is provided with a magnetic component, which is used to magnetically connect with the accessory.

[0018] According to the first aspect, in one possible implementation, the headphone body includes a housing and a fastener, the housing having a mounting cavity, the fastener being disposed within the mounting cavity, the fastener being a metal component, and the fastener passing through the connector and connected to the fastener.

[0019] According to the first aspect, in one possible implementation, the fastener has a threaded hole, the housing has a mounting side, and the mounting side is provided with a clearance opening connected to the mounting cavity to expose the threaded hole;

[0020] The headphone body also includes a wearing part, which is connected to the mounting side and covers the clearance opening. The first limiting groove is provided in the wearing part, and the fastener passes through the connector, the wearing part and the clearance opening and is threadedly connected to the threaded hole.

[0021] According to the first aspect, in one possible implementation, one of the fastener and the housing is provided with a second limiting groove, and the other is provided with a limiting protrusion, wherein the extending direction of the second limiting groove intersects with a first direction; the limiting protrusion is confined within the second limiting groove to limit the movement of the fastener along the first direction, wherein the first direction is parallel to the axial direction of the threaded hole.

[0022] According to the first aspect, in one possible implementation, the housing further has a mounting port communicating with the mounting cavity, the mounting port being for the fastener to pass through and be placed within the mounting cavity; the earphone body further includes a pin passing through the housing and the fastener, the axial direction of the pin intersecting the opening direction of the mounting port.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of the headphone structure in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection structure between the headphone body and the accessories in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the disassembly structure of the earphone in an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the disassembled structure of the headphone body in an embodiment of this utility model.

[0029] Figure label:

[0030] 1000, headphones 1000;

[0031] 100. Earphone body; 110. First limiting groove; 130. Mounting groove; 130. Housing; 131. Mounting cavity; 132. Mounting side; 133. Clearance opening; 134. Mounting opening; 140. Fixing component; 141. Threaded hole; 150. Wearing part; 161. Second limiting groove; 162. Limiting protrusion; 170. Pin;

[0032] 200. Connector; 210. First part; 220. Second part; 221. Limiting structure; 222. Assembly structure;

[0033] 300. Fasteners;

[0034] 2000, Accessories. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] In existing technologies, headphone accessory connection structures mostly use threads or snap-fit ​​methods for detachable installation. During daily activities, the torsional force between the headphone body and the accessory can cause the connection structure to gradually loosen, even leading to the accessory falling off. This structural defect is particularly noticeable in high-frequency usage scenarios such as sports headphones, severely impacting the user experience.

[0041] This application proposes headphones, such as Figures 1 to 3 As shown, the earphone 1000 includes an earphone body 100 and a connector 200. The earphone body 100 has a first limiting groove 110. The first limiting groove 110 is a recessed structure provided inside the earphone body 100, which can be realized by machining or injection molding. Its shape matches part of the structure of the connector 200 to limit the rotational displacement of the connector 200. The connector 200 is detachably connected to the earphone body 100 by a fastener 300 for mounting accessories 2000. Part of the structure of the connector 200 is confined within the first limiting groove 110 to limit rotation around the fastener 300. The connector 200 is a metal or plastic part with assembly function, which can be realized by a structure with protrusions or fitting parts. After part of it is embedded in the first limiting groove 110, rotational movement is blocked by geometric constraints.

[0042] When the fastener 300 locks the connector 200 to the headphone body 100, a portion of the connector 200's structure is embedded in the first limiting groove 110. At this time, the sidewall of the first limiting groove 110 directly blocks the circumferential displacement of the connector 200, forming a rigid stop. The axial pressure provided by the fastener 300, combined with the geometric constraint of the first limiting groove 110, prevents the connector 200 from rotating around the axis of the fastener 300. This dual constraint mechanism effectively eliminates the transmission of torsional force between the accessory 2000 and the connecting structure when the wearer's head moves, preventing loosening of the connection due to repeated twisting.

[0043] In this embodiment, rotational degrees of freedom are directly eliminated through physical limiting, and the first limiting groove 110, in conjunction with the fastener 300, provides higher structural durability. This improves the stability of the accessory 2000 connection structure under dynamic usage scenarios, preventing connection failure caused by the accumulation of rotational torque. Simultaneously, it retains the convenience of detachable connections, ensuring that accessory 2000 replacement and maintenance are not affected by the limiting structure 221, thus balancing functional reliability and usage flexibility.

[0044] The fastener 300 can be a screw or bolt, such as a metal screw of M1.4-M2 specification, which passes through the connector 200 and is threaded to the headphone body 100, and remains axially fixed in the locked state.

[0045] The connector 200 includes a first part 210 and a second part 220 connected to each other. The first part 210 is connected to the headphone body 100 by a fastener 300. The first part 210 refers to a base component that forms a rigid connection with the headphone body 100 by the fastener 300. Specifically, it can be made of metal stamping or injection molding. It is used to bear the load of the second part 220 and the assembly structure 222. Part of the structure of the second part 220 is exposed in the first limiting groove 110 and forms the assembly structure 222. The assembly structure 222 is used for detachably installing the accessory 2000. At least one of the first part 210 and the second part 220 is provided with a limiting structure 221, which is limited within the first limiting groove 110. The second part 220 refers to a support component extending from the first part 210. Specifically, it can be made of an L-shaped bending structure integrally formed with the first part 210. Its extended part constitutes the mounting base surface of the assembly structure 222. The limiting structure 221 refers to the protrusion or groove provided on the outer periphery of the first part 210 or the second part 220. Specifically, it can be realized by using a trapezoidal boss formed by milling, which forms a rotational constraint through clearance fit with the first limiting groove 110.

[0046] When the fastener 300 secures the first part 210 to the headphone body 100, the limiting structure 221 is embedded in the first limiting groove 110 to form a circumferential constraint. The second part 220 extends out of the end of the first limiting groove 110 to form an assembly structure 222. When bearing the load of the accessory 2000, the torque generated by the external force is transmitted to the first part 210 through the second part 220. At this time, the contact surface between the limiting structure 221 and the first limiting groove 110 forms a shear force to resist rotational movement.

[0047] This embodiment utilizes the mechanical interference between the limiting structure 221 and the first limiting groove 110 to convert rotational torque into shear force between structural components. This effectively suppresses circumferential displacement of the connector 200 caused by the shaking of the accessory 2000 during wear, and prevents the fastener 300 from stripping its threads due to continuous torque. The spatial separation design of the assembly structure 222 and the limiting structure 221 ensures that the installation of the accessory 2000 and the mechanical limiting function do not interfere with each other, guaranteeing both quick assembly and disassembly of the decorative parts and long-term stability of the connection structure.

[0048] The headphone body 100 has a mounting groove 120, a first limiting groove 110 communicating with the mounting groove 120, and a first part 210 disposed within the mounting groove 120. The mounting groove 120 is a recessed structure formed inside the headphone body 100 to accommodate the first part 210 of the connector 200. It can be achieved through machining or injection molding. This structure achieves axial positioning of the connector 200 through physical spatial constraints. The first limiting groove 110 is an extended groove communicating with the mounting groove 120. It can be implemented using a stepped groove or guide groove structure, and is used to form a motion constraint path for the second part 220 of the connector 200 or the limiting structure 221. The limiting structure 221 is a protrusion or groove feature provided on the connector 200. It can be implemented using a snap-fit ​​boss, a dovetail guide rail, or a limiting pin structure. It restricts the rotational freedom of the connector 200 around the fastener 300 by cooperating with the first limiting groove 110.

[0049] When the first limiting groove 110 is provided on the side wall of the mounting groove 120, the limiting structure 221 provided on the outer periphery of the first part 210 or on the second part 220 is constrained within the lateral groove, forming a rigid barrier against the lateral displacement of the connector 200. When the first limiting groove 110 is provided on the bottom wall of the mounting groove 120, the limiting structure 221 provided at the bottom of the first part 210 forms a vertical fit with the bottom groove, preventing the connector 200 from rotating circumferentially. Alternatively, the first limiting groove 110 can be provided on both the side wall and the bottom wall of the mounting groove 120. Combining these two configurations, a three-dimensional limiting frame applies constraint forces from the lateral and bottom directions respectively, superimposing multi-dimensional limiting on the axial locking of the fastener 300, effectively resisting the rotational torque generated by the shaking of the accessory 2000.

[0050] This embodiment prevents the connector 200 from shifting circumferentially during dynamic use, ensuring the stability of the accessory 2000 mounting structure. The optional configuration of sidewall and bottom limiting provides adaptability for accessories 2000 of different shapes, maintaining mechanical strength while ensuring assembly flexibility. The synergistic effect of multi-directional constraint forces significantly reduces the risk of connection loosening due to single-point failure.

[0051] Furthermore, given that the first limiting groove 110 is located on the side wall of the mounting groove 130, the second part 220 is connected to the outer edge of the first part 210. The second part 220 includes a limiting structure 221 and an assembly structure 222 connected in sequence in a direction away from the first part 210. The limiting structure 221 is confined within the first limiting groove 110, and the assembly structure 222 protrudes from the first limiting groove 110. When the fastener 300 fixes the connector 200 to the earphone body 100, the outer edge of the second part 220 extends outward along the side wall of the mounting groove 120, and the limiting structure 221 is completely embedded in the first limiting groove 110. At this time, the contact surface between the side wall of the first limiting groove 110 and the limiting structure 221 forms a rigid constraint, and when the accessory 2000 is subjected to external force, the connector 200 cannot rotate around the axis of the fastener 300. The assembly structure 222 is located in an open area outside the first limiting groove 110, so that the installation operation of the accessory 2000 is not obstructed by the structure of the headphone body 100. For example, in the magnetic connection method, the accessory 2000 can be directly attached to the surface of the magnetic component of the assembly structure 222 without contacting the first limiting groove 110, thus avoiding structural interference during the installation process.

[0052] This application further proposes an earphone 1000, including an earphone body 100 and a connector 200. The first part 210 of the connector 200 has a first end and a second end. The first part 210 is spirally arranged in the direction from the first end to the second end. When the fastener 300 passes through the first part 210 and is connected to the earphone body 100, the first end and the second end respectively abut against the earphone body 100 and the fastener 300.

[0053] The spiral configuration refers to the first part 210 of the connector 200 forming a structure with a continuous bending path. Specifically, it can be made of a spiral sheet of metal or elastic plastic material. This structure can produce elastic deformation under pressure. The first and second ends abutting against the earphone body 100 and the fastener 300 respectively means that in the assembled state, the two ends of the spiral structure form contact pressure with adjacent components. This can be achieved by adjusting the bending angle and thickness of the spiral structure, so that the two ends generate a counterforce when the fastener 300 is locked.

[0054] Specifically, the spiral-shaped first part 210 is subjected to axial compressive force during the assembly process of the fastener 300, and its bending path forces the structure to undergo elastic deformation. The contact surface between the first end and the earphone body 100 forms positive support, while the contact surface between the second end and the fastener 300 forms negative support. The bidirectional pressure acts on the bent section of the spiral structure. For example, when the fastener 300 is screwed in, the spiral structure undergoes radial expansion in the vertical direction, and its elastic restoring force continues to act between the earphone body 100 and the fastener 300. This elastic deformation not only compensates for the assembly and avoids insufficient preload due to part size deviations, but also absorbs external vibration energy through the deformation of the structure itself, avoiding stress concentration caused by rigid contact; thus maintaining connection stability and preventing the connector 200 from loosening under dynamic usage scenarios.

[0055] This application further proposes an assembly structure 222 having through holes, threaded holes, or magnetic components.

[0056] A through hole refers to a hole that penetrates the assembly structure 222. It can be implemented using a metal ring or a plastic ring, allowing the accessory 2000 to pass through and be secured by a pin or knot, thus limiting the displacement of the accessory 2000. A threaded hole refers to a hole with a threaded structure on its inner wall, which can be implemented using standard thread specifications or self-tapping threads. The threaded engagement enhances the bonding strength between the accessory 2000 and the assembly structure 222. A magnetic component refers to a functional component with magnetic properties, which can be implemented using a permanent magnet or a magnetic alloy. Magnetic attraction is used to counteract the tendency to separate due to external vibrations.

[0057] In other embodiments, the assembly structure 222 and the accessory 2000 may be connected in other ways, and this application does not limit this.

[0058] Please refer to the above. Figure 4This application further proposes that the headphone body 100 includes a shell 130 and a fixing member 140. The shell 130 refers to the component forming the external structure of the headphone body 100, which can be made by injection molding and can accommodate internal components such as the sound unit. The shell 130 has a mounting cavity 131 for mounting the fixing member 140 and restricting its movement. The fixing member 140 refers to a metal component embedded in the mounting cavity 131, which can be made of stainless steel or aluminum alloy, utilizing the high structural strength of the metal material to enhance connection stability. A fastener 300 passes through the connector 200 and connects to the fixing member 140. The mounting cavity 131 of the shell 130 provides a stable mounting position for the metal fixing member 140. After passing through the connector 200, the fastener 300 directly forms a threaded engagement with the fixing member 140. Since the fixing member 140 is made of metal, it is not easily deformed when subjected to fastening force, which avoids the thread stripping phenomenon caused by insufficient material strength in traditional plastic shells 130. The sidewall of the mounting cavity 131 forms a circumferential constraint on the fixing member 140, limiting its lateral displacement under stress, so that the connection structure between the connector 200 and the headphone body 100 can remain stable under frequent shaking conditions.

[0059] In some embodiments, the fastener 140 has a threaded hole 141, and the housing 130 has a mounting side 132. The mounting side 132 is provided with a clearance opening 133 connected to the mounting cavity 131 to expose the threaded hole 141. The clearance opening 133 refers to a channel opened on the mounting side 132 of the housing 130, which can be achieved by pre-reserving an opening during injection molding. Its function is to expose the threaded hole 141 so that the fastener 300 can pass through. The headphone body 100 also includes a wearing part 150, which refers to a wearing structure connected to the housing 130. Specifically, it can be an ear hook or a headband component. It hides the mechanical interface by covering the clearance opening 133, and at the same time carries the first limiting groove 110 to limit the connection 200.

[0060] The fastener 300 passes sequentially through the connector 200, the wearing part 150, and the clearance opening 133 before engaging with the threaded hole 141 of the fixing member 140, forming an axially compressed layered connection structure. While covering the clearance opening 133, the wearing part 150's internal first limiting groove 110 applies circumferential constraint to the connector 200, restricting its rotational freedom around the fastener 300 axis. After the fixing member 140 engages with the mounting cavity 131 of the housing 130, the clearance opening 133 aligns the threaded hole 141 with the external fastener 300, allowing the connector 200 to be installed without disassembling the housing 130 during assembly. The wearing part 150, acting as a pressure transmission medium, evenly transmits the axial preload generated by the fastener 300 to the contact surface between the housing 130 and the fixing member 140, preventing localized stress concentration that could lead to structural deformation.

[0061] Furthermore, the covering design of the wearing part 150 over the avoidance port 133 ensures ease of assembly while avoiding visual obstruction caused by exposed mechanical interfaces. The stacked assembly method of the connector 200, the wearing part 150 and the fastener 140 simplifies the disassembly and assembly process, and three-dimensional fixation can be achieved without the need for additional limiting components.

[0062] This application further proposes that in the fastener 140 and the housing 130, one is provided with a second limiting groove 161 and the other with a limiting protrusion 162. The extending direction of the second limiting groove 161 intersects with a first direction, and the limiting protrusion 162 is confined within the second limiting groove 161 to restrict the movement of the fastener 140 along the first direction, which is parallel to the axial direction of the threaded hole 141. The second limiting groove 161 refers to a groove structure provided on the housing 130 or the fastener 140, which can be implemented as a rectangular groove, dovetail groove, or T-groove, and its extending direction forms a non-zero angle with the axial direction of the threaded hole 141. This feature restricts the axial displacement of the fastener 140 through geometric constraints. The limiting protrusion 162 refers to a protrusion structure that matches the shape of the second limiting groove 161, which can be implemented by metal stamping or injection molding. After the limiting protrusion 162 is embedded in the second limiting groove 161, it forms a spatial limitation. The limiting protrusion 162, through its cooperation with the second limiting groove 161, achieves multi-dimensional constraint, preventing the fixing member 140 from displacing along the axis of the threaded hole 141 when the earphone 1000 is shaken by external force, thus avoiding failure of the accessory 2000 mounting structure due to loose threaded connection. It maintains the relative positional stability of the fixing member 140 and the housing 130, thereby ensuring a reliable connection between the connector 200 and the earphone body 100 and preventing the accessory 2000 from falling off.

[0063] This application further proposes that the housing 130 also has a mounting port 134 communicating with the mounting cavity 131. The mounting port 134 refers to an opening structure on the surface of the housing 130 that communicates with the internal mounting cavity 131. Specifically, it can be implemented as a rectangular or circular slot, providing an assembly channel for the fastener 140 to enter the mounting cavity 131. The earphone body 100 also includes a pin 170, which passes through the housing 130 and the fastener 140. The pin 170 is a columnar connecting component that passes through the housing 130 and the fastener 140. Specifically, it can be made of metal or high-strength plastic and is laterally fixed by interference fit or threaded locking. The axial direction of the pin 170 intersects with the opening direction of the mounting port 134, which can be set to be vertical or at an inclined angle to form a spatial limiting constraint.

[0064] After the fastener 140 is inserted into the mounting cavity 131 of the housing 130 through the mounting port 134, the pin 170 passes laterally through the side wall of the housing 130 and the pre-set hole inside the fastener 140. Because the axial direction of the pin 170 intersects the opening direction of the mounting port 134, after assembly, the displacement of the fastener 140 along the mounting port 134 direction is limited by the lateral obstruction of the pin 170. This spatial cross-constraint mechanism prevents the fastener 140 from reversing its original assembly path when subjected to external vibration or impact. Simultaneously, the shear resistance of the pin 170 further suppresses the axial movement of the fastener 140 within the cavity.

[0065] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An earphone, characterized in that, include: The earphone body has a first limiting groove; A connector is detachably connected to the headphone body via a fastener, and the connector is used for detachably mounting accessories; a portion of the connector is confined within the first limiting groove to restrict rotation of the connector around the fastener.

2. The earphone according to claim 1, characterized in that, The connector includes a first part and a second part connected to each other. The first part is connected to the headphone body by the fastener. A portion of the structure of the second part is exposed in the first limiting groove and forms an assembly structure. The assembly structure is used for detachably installing accessories. The first part and / or the second part are provided with a limiting structure, which is limited within the first limiting groove.

3. The earphone according to claim 2, characterized in that, The headphone body has a mounting groove, the first limiting groove is connected to the mounting groove, and the first part is disposed in the mounting groove; The first limiting groove is located on the side wall of the mounting groove, and the limiting structure is located on the outer edge of the first part or the second part; or, The first limiting groove is located on the bottom wall of the mounting groove, and the limiting structure is located at the bottom of the first part.

4. The earphone according to claim 3, characterized in that, The first limiting groove is located on the side wall of the mounting groove, and the second part is connected to the outer edge of the first part. The second part includes the limiting structure and the assembly structure connected in sequence along the direction away from the first part. The limiting structure is limited within the first limiting groove, and the assembly structure is exposed outside the first limiting groove.

5. The earphone according to claim 2, characterized in that, The first part has a first end and a second end, and the first part is spirally arranged in the direction from the first end to the second end; the first part is configured such that when the fastener passes through the first part and is connected to the headphone body, the first end and the second end respectively abut against the headphone body and the fastener.

6. The earphone according to claim 2, characterized in that, The assembly structure has a through hole for the accessory to pass through; or... The assembly structure has a threaded hole for threaded connection with the accessory; or... The assembly structure is provided with a magnetic component, which is used to magnetically connect with the accessory.

7. The earphone according to claim 1, characterized in that, The earphone body includes a shell and a fixing member. The shell has a mounting cavity, and the fixing member is disposed in the mounting cavity. The fixing member is a metal part, and the fastener passes through the connector and is connected to the fixing member.

8. The earphone according to claim 7, characterized in that, The fastener has a threaded hole, the housing has a mounting side, and the mounting side has a clearance opening connected to the mounting cavity to expose the threaded hole; The headphone body also includes a wearing part, which is connected to the mounting side and covers the clearance opening. The first limiting groove is provided in the wearing part, and the fastener passes through the connector, the wearing part and the clearance opening and is threadedly connected to the threaded hole.

9. The earphone according to claim 8, characterized in that, In the fixing member and the housing, one is provided with a second limiting groove and the other is provided with a limiting protrusion. The extending direction of the second limiting groove intersects with the first direction. The limiting protrusion is located within the second limiting groove to limit the movement of the fixing member along the first direction, which is parallel to the axial direction of the threaded hole.

10. The earphone according to claim 8, characterized in that, The housing also has a mounting port communicating with the mounting cavity, the mounting port being used for the fastener to pass through and be placed inside the mounting cavity; the earphone body also includes a pin, the pin passing through the housing and the fastener, the axial direction of the pin intersecting the opening direction of the mounting port.

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