earphone

Abstract

This utility model relates to an earphone, including an ear shell, a front cavity steel mesh, and a speaker. The ear shell has a receiving cavity and a sound outlet hole communicating with the receiving cavity is formed on its surface. The speaker is fixedly connected to the receiving cavity. The front cavity steel mesh includes a connected mesh portion and a positioning foot. The mesh portion covers the sound outlet hole, and the end of the positioning foot passes through the ear shell to extend into the receiving cavity. The end of the positioning foot extending into the receiving cavity is bent to fasten the cavity wall. The earphone provided by this application can achieve a hidden fixed structure of the front cavity steel mesh, and the installation method is simple and detachable.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a headphone. Background Technology

[0002] In recent years, with the rapid development of wireless audio technology, headphones have become an indispensable smart device in people's daily lives, widely used in music appreciation, calls, gaming, and fitness. In traditional headphone structures, the connection between the earcup and the speaker's front mesh is typically achieved through ultrasonic welding or adhesive bonding. Ultrasonic welding uses high-frequency vibration to fuse the plastic, but this carries risks such as incomplete welds and excess material, affecting product yield and aesthetics. Adhesive bonding, on the other hand, relies on manual application, which can easily lead to excess glue and uneven adhesion, reducing product consistency. Furthermore, both of these connection methods are non-removable, rigid structures; once assembled, they are difficult to disassemble without damage, resulting in difficult repairs and increased after-sales costs. Therefore, a detachable headphone connection solution is urgently needed. Utility Model Content

[0003] Therefore, it is necessary to provide an earphone with a fixed structure that can hide the steel mesh in the front cavity, and the installation method is simple and detachable.

[0004] An embodiment of this utility model provides an earphone, including an ear shell, a front cavity steel mesh, and a speaker. The ear shell has a receiving cavity and a sound outlet hole communicating with the receiving cavity is formed on its surface. The speaker is fixedly connected to the receiving cavity. The front cavity steel mesh includes a connected mesh portion and a positioning foot. The mesh portion covers the sound outlet hole. The end of the positioning foot passes through the ear shell to extend into the receiving cavity. One end of the positioning foot extending into the receiving cavity is bent to fasten the cavity wall of the receiving cavity.

[0005] The earphone provided in this application has a front cavity steel mesh including a mesh portion and a positioning foot. The end of the positioning foot can pass through the ear shell to connect the front cavity steel mesh to the ear shell. The end of the positioning foot that extends into the accommodating cavity is bent so that the front cavity steel mesh fastens to the cavity wall of the accommodating cavity. This provides an earphone with a fixed structure that can hide the front cavity steel mesh. The installation method is simple, beautiful and detachable, and has high installation stability.

[0006] In one embodiment, one end of the positioning foot extending into the receiving cavity is bent by press riveting and pressed against the cavity wall.

[0007] In one embodiment, the positioning foot includes a first plate and a second plate connected together. The first plate is connected between the mesh portion and the second plate. The first plate passes through the ear shell. The second plate is bent relative to the first plate and pressed against the cavity wall of the receiving cavity by riveting.

[0008] In one embodiment, the second plate is bent toward the side where the central axis of the mesh portion is located.

[0009] In one embodiment, the ear shell has positioning holes that communicate with the receiving cavity. The number of positioning holes is the same as the number of positioning feet, and the shape of the positioning holes is the same as the cross-sectional shape of the positioning feet. The positioning feet are inserted through the positioning holes one by one.

[0010] In one embodiment, the outer surface of the ear shell is recessed to form a limiting groove, the positioning hole is opened at the bottom of the limiting groove, and the bottom end of the mesh portion extends into and connects to the limiting groove.

[0011] In one embodiment, the ear shell includes a support plate located in the sound outlet, the support plate abutting against the bottom side of the mesh portion.

[0012] In one embodiment, the end of the positioning foot passes through the support plate and latches onto the side of the support plate opposite to the mesh portion.

[0013] In one embodiment, the number of positioning feet is multiple, and the multiple positioning feet are distributed rotationally symmetrically about the center of the mesh portion.

[0014] In one embodiment, the mesh portion and the positioning foot are integrally connected. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 This is a partial structural diagram of an earphone provided in one embodiment of this application;

[0017] Figure 2 A schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application;

[0018] Figure 3 A schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application;

[0019] Figure 4 An exploded view of a portion of the structure of an earphone provided in an embodiment of this application;

[0020] Figure 5 A schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application;

[0021] Figure 6 A schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application;

[0022] Figure 7 A schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application;

[0023] Figure 8 for Figure 7 Enlarged view of the dashed line area;

[0024] Figure 9 A schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application;

[0025] Figure 10 This is a schematic diagram of a portion of the structure of an earphone provided in an embodiment of this application.

[0026] Reference numerals: ear shell 10; accommodating cavity 11; cavity wall 110; sound outlet 12; positioning hole 13; limiting groove 14; support plate 15; front cavity steel mesh 20; mesh part 21; positioning foot 22; first plate 221; second plate 222. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In recent years, with the rapid development of wireless audio technology, headphones have become an indispensable smart device in people's daily lives, widely used in music appreciation, calls, gaming, and fitness. In traditional headphone structures, the connection between the earcup and the speaker's front mesh is typically achieved through ultrasonic welding or adhesive fixation. Ultrasonic welding uses high-frequency vibration to fuse the plastic, but this carries risks such as incomplete welds and excess material, affecting product yield and aesthetics. The heat-affected zone of the weld can lead to microstructural degradation, and the connection point is prone to sudden changes in acoustic impedance, affecting sound quality. Furthermore, the joint structure is susceptible to fatigue cracks under long-term vibration. Adhesive fixation relies on manual application, which can easily result in excess adhesive and uneven bonding, reducing product consistency. In addition, both of these connection methods are non-removable, rigid structures; once assembled, they are difficult to disassemble without damage, leading to repair difficulties and increased after-sales costs. Therefore, a detachable headphone connection solution is urgently needed.

[0032] Traditional rigid connection methods lack cushioning design. In the event of drops or impacts, welded points or glued surfaces are prone to cracking due to stress concentration, causing the steel mesh to detach or the acoustic cavity structure to be damaged, affecting the durability of the headphones and the user experience. As consumers' demands for headphone quality and repairability increase, existing technologies are no longer sufficient to meet market needs. Therefore, there is an urgent need for a new, low-cost, detachable, and shock-resistant connection solution to improve the reliability and ease of maintenance of headphones.

[0033] To address the issues of high cost and complex manufacturing processes associated with non-detachable, rigidly fixed headphone connections, referencing... Figures 1-10 This invention provides an earphone, including an ear shell, a front cavity steel mesh, and a speaker. The ear shell has a receiving cavity and a sound outlet hole communicating with the receiving cavity is formed on its surface. The speaker is fixedly connected to the receiving cavity. The front cavity steel mesh includes a connected mesh portion and a positioning foot. The mesh portion covers the sound outlet hole, and the end of the positioning foot passes through the ear shell to extend into the receiving cavity. The end of the positioning foot extending into the receiving cavity is bent to fasten the cavity wall. This application provides an earphone with a fixed structure that can hide the front cavity steel mesh. The installation method is simple, aesthetically pleasing, and detachable, while also possessing high installation stability.

[0034] refer to Figures 1 to 10 To facilitate disassembly and maintenance by detachably connecting the earphone shell to the front cavity steel mesh 20, the earphone provided in this application includes an ear shell 10, a front cavity steel mesh 20, and a speaker. The ear shell 10 serves as the main support structure and has a receiving cavity 11. The surface of the cavity has an array of acoustically designed sound outlet holes 12. The ear shell 10 forms sound outlet holes 12 on its surface that communicate with the receiving cavity 11 to ensure accurate sound transmission. The speaker unit can be securely installed inside the receiving cavity 11 using a fixing structure to achieve high-quality audio output. The front cavity steel mesh 20 includes a connected mesh portion 21 and positioning feet 22. In some embodiments, the mesh portion 21 of the front cavity steel mesh 20 can be perforated to ensure breathability and prevent foreign objects from entering. Specifically, the mesh portion 21 covers the sound outlet holes 12, and the outline of the mesh portion 21 precisely matches the shape of the sound outlet holes 12 (such as circular, elliptical, racetrack-shaped, etc.) to ensure complete coverage and seamless edges, preventing sound leakage or foreign objects from entering. The area of ​​the mesh portion 21 is slightly larger than that of the sound outlet 12, so that it can completely cover the sound outlet 12 and form a certain overlap area at the edge to enhance the sealing and structural strength. In one embodiment, if the sound outlet 12 is located on the arcuate surface of the ear shell 10, the mesh portion 21 can be pre-formed with a corresponding curvature to ensure a natural transition with the surface of the ear shell 10 and avoid gaps caused by the flat steel mesh fitting the curved surface.

[0035] Further, see Figures 1 to 6 To achieve a detachable connection between the ear shell 10 and the front cavity steel mesh 20, the positioning foot 22 can be made of a flexible metal sheet (such as stainless steel or titanium alloy), with its end designed as a hook-shaped or L-shaped bend. After passing through the ear shell 10, it is fixed by mechanical pressing or hot riveting, so that the bent part is tightly attached to the cavity wall 110 of the receiving cavity 11, forming a firm snap-fit ​​connection. When disassembly is required, the positioning foot 22 can be pried up with the help of tools to disengage from the inner wall of the receiving cavity 11 until the positioning foot 22 can be detached from the ear shell 10 and pulled out. Furthermore, the bending angle of the positioning foot 22 can be adjusted according to assembly requirements, such as a 90° right-angle bend, an oblique bend, or a spiral bend, to enhance the resistance to pull-out. During assembly, the speaker can be installed into the receiving cavity 11 and fixed first, and then the positioning foot 22 of the front cavity steel mesh 20 can be inserted into the reserved hole of the ear shell 10. Furthermore, after the positioning foot 22 protrudes from the ear shell 10, it is bent using a clamp or riveting device so that its end fits tightly against the wall of the receiving cavity 11, forming a mechanical interlocking structure. The bent portion of the positioning foot 22 can be equipped with anti-slip textures or micro-protrusions to increase friction with the cavity wall 110 and prevent loosening due to long-term vibration. The edge of the mesh portion 21 can be designed as an arc or embedded in the limiting groove 14 of the ear shell 10 to ensure that the steel mesh will not shift or fall off when subjected to external force. The bending structure can achieve a fixed structure that hides the front cavity steel mesh, making the installation simple, aesthetically pleasing, and detachable, while also possessing high installation stability.

[0036] Specifically, in this embodiment, there are multiple positioning feet 22. For example, three positioning feet 22 can be provided, which are rotationally symmetrically distributed about the center of the mesh portion 21. In one embodiment, adjacent positioning feet 22 are at 120° apart, forming a stable structure where each positioning foot 22 bears equal tension. In another embodiment, the earphone is provided with four positioning feet 22, which are at 90° apart, and auxiliary support ribs can be added diagonally. In some embodiments, adjacent positioning feet 22 can adopt a differentiated thickness design (e.g., 1 thick and 3 thin) to ensure basic fixing force while reserving stress release channels. To meet the needs of different headphones, the positioning feet 22 can be designed differently. For example, when user interaction design is required, touch-recognizable raised patterns can be set on the positioning feet 22 at different angles, and a micro LED array can be integrated at the center of symmetry to display the working status, allowing users to slightly rotate the steel mesh to change the force distribution of the positioning feet 22 to fine-tune the tone. When it is necessary to adapt to extreme environments, the symmetrically distributed positioning feet 22 can be made of a combination of materials with different coefficients of thermal expansion, and the rotational symmetry structure can generate a self-tightening torque under vibration. Alternatively, ice expansion gaps can be reserved between the positioning feet 22.

[0037] In some embodiments, the end of the positioning foot 22 extending into the receiving cavity 11 is bent by press riveting and pressed against the cavity wall 110 of the receiving cavity 11. Specifically, the press riveting can be performed using a cold press riveting process, a heat-assisted press riveting process, or a multi-stage press riveting process. For example, an alloy steel punch can be used to perform cold press riveting on the end of the positioning foot 22, where the metal undergoes plastic flow at room temperature to form a bent structure. For high-hardness materials, the bent part is first subjected to local resistance heating before press riveting to improve the forming performance. In the case of a multi-stage press riveting process, the bending process is completed in three stages: pre-pressing and shaping, main pressing and forming, and fine pressing and strengthening. Users can choose the press riveting process according to actual production needs. Further, regarding the shape of the positioning foot 22 being pressed and bent, in one embodiment, the bending structure is an L-shaped right-angle bend, specifically, the bending structure forms a standard mechanical interlocking structure, and the bending surface is completely in contact with the cavity wall 110. In another embodiment, the bending structure is a J-shaped progressive bend, specifically, the end presents an involute curve, gradually increasing the contact area. In another embodiment, the bending structure is a multi-directional petal-shaped bending, specifically, during riveting, the metal is made to radiate outwards in all directions to form multi-point anchoring.

[0038] Specifically, in this embodiment, the positioning foot 22 includes a first plate 221 and a second plate 222 connected together. The first plate 221 is connected between the mesh portion 21 and the second plate 222 to achieve detachable fixing of the positioning foot 22 to the front cavity steel mesh 20. Specifically, the first plate 221 can adopt a linear rigid structure, and guide stripes are provided on the surface to facilitate insertion into the ear shell 10. To increase the one-way locking effect after insertion into the ear shell 10, anti-rebound barbs can be processed on both sides of the first plate 221. The first plate 221 is inserted into the ear shell 10, and the second plate 222 is bent relative to the first plate 221 and pressed against the cavity wall 110 of the receiving cavity 11 by riveting. A stress concentration groove can be pre-formed in the second plate 222 to guide precise bending during riveting. To increase the adhesion of the material penetrating the cavity wall 110 during pressing, a micro-protrusion array can be provided on the inner surface.

[0039] See Figures 7 to 10 In some embodiments, the second plate 222 bends towards one side of the central axis of the mesh portion 21. For example, when three positioning feet 22 are evenly distributed at 120°, the bending direction of the second plate 222 of each positioning foot 22 is along the tangent direction of the mesh portion 21, forming a tightening effect. The function of bending the second plate 222 towards one side of the central axis of the mesh portion 21 is to form a centripetal contraction stress field, so that each positioning foot 22 generates a synergistic clamping force. The bending direction is perpendicular to the vibration transmission direction, effectively suppressing the loosening tendency in the working state. At the same time, the central converging structure automatically compensates for assembly tolerances, ensuring uniform pressure distribution. From an acoustic point of view, the above structure can avoid disordered reflection of sound waves in the cavity, reduce the formation of standing waves, and the bending surface acts as a sound wave guiding structure, so that high-frequency sound waves radiate in an orderly manner toward the sound outlet 12. At the same time, it can reduce the blocking effect of the positioning feet 22 on the sound field and maintain acoustic symmetry.

[0040] Specifically, in this embodiment, the ear shell 10 has a positioning hole 13 that connects to the receiving cavity 11. Each positioning hole 13 has a unique contour feature (such as an asymmetrical polygon), ensuring that the positioning foot 22 can only be inserted in the correct direction. Specifically, to ensure precise insertion of the positioning foot 22 into the positioning hole 13, the positioning hole 13 can be configured as a guided structure. For example, it can be configured as a three-stage guided structure, consisting of a flared opening, a transitional conical surface, and a precision fitting section, thereby achieving progressive positioning of the positioning hole 13. The positioning hole 13 can have its tactile feedback mechanism enhanced by its structure. Elastic latches are provided at key positions in the positioning hole 13, producing a distinct "click" feel when the positioning foot 22 is fully in place. In some embodiments, a micro-damping ring is attached to the inner wall of the positioning hole 13 to absorb high-frequency micro-vibrations, and a chip removal groove is designed at the bottom of the positioning hole 13 to automatically remove debris generated during assembly. To facilitate routine maintenance of the positioning hole 13, metal reinforcements can be embedded around it to prevent deformation caused by prolonged insertion and removal. Simultaneously, radial microgrooves are machined along the edge of the positioning hole 13 to disperse concentrated stress. To increase the lifespan of the earphone shell, the positioning hole 13 can undergo multi-layered protective treatment. In one embodiment, the hole wall can be sequentially treated with hardening, a lubricating coating, and an anti-corrosion plating, thereby improving the earphone's lifespan.

[0041] Furthermore, the number of positioning holes 13 is the same as the number of positioning feet 22. Accordingly, during assembly, each positioning hole 13 corresponds to one positioning foot 22. The shape of the positioning hole 13 is the same as the cross-sectional shape of the positioning foot 22, and the positioning feet 22 pass through the positioning holes 13 one by one. For example, in one embodiment, three positioning holes 13 and three positioning feet 22 are provided. The two adjacent positioning feet 22 are at a 120° angle, and the two adjacent positioning holes 13 are at a 120° angle. Each positioning hole 13 corresponds to one positioning foot 22. The shape of the positioning hole 13 is the same as the cross-sectional shape of the positioning foot 22, and the cross-section of both is rectangular. The positioning feet 22 pass through the positioning holes 13 one by one. An equilateral triangle stable support structure is formed between the three positioning holes 13 and the three positioning feet 22. In some embodiments, the positioning hole 13 and the positioning foot 22 can also be configured as irregular structures. For example, the cross-sectional shape of the positioning foot 22 can be configured as a teardrop shape, a pentagon, a D shape, etc. When the cross-sectional shape of the positioning foot 22 is configured as a teardrop shape, the corresponding feature of the positioning hole 13 is a teardrop hole with a guide groove; when the cross-sectional shape of the positioning foot 22 is configured as a pentagon, the corresponding feature of the positioning hole 13 is a pentagonal anti-fool hole; when the cross-sectional shape of the positioning foot 22 is configured as a D shape, the corresponding feature of the positioning hole 13 is a D-shaped hole with a planar reference.

[0042] Furthermore, during assembly, the robotic arm picks up the steel mesh assembly; the vision system identifies the shape features of the positioning feet 22 and automatically rotates them to a preset angle; the three points are simultaneously pressed into the corresponding positioning holes 13; and the riveting mechanism completes the end bending and fixing. The irregularly shaped positioning feet 22 and positioning holes 13 can prevent incorrect assembly; for example, the user cannot insert the pentagonal positioning foot 22 into the teardrop-shaped hole. In addition, thermal compensation can be achieved because the different shaped holes and feet absorb the differences in thermal deformation of the materials.

[0043] Specifically, in this embodiment, a limiting groove 14 is formed by an indentation on the outer surface of the ear shell 10. The user can control the axial insertion depth according to the groove depth of the limiting groove 14. The groove wall constrains radial displacement, and the bottom positioning hole 13 determines the circumferential angle to form a three-dimensional positioning reference. The limiting groove 14 and the mesh part 21 are transitionally fitted to ensure the concentricity of the acoustic component and the sound outlet hole 12. The limiting groove 14 can adopt a three-level depth gradient design, with the three levels being a guide section, a transition section, and a precision fitting section, to achieve progressive positioning of the mesh part 21. The groove wall can be designed as a micro-conical surface, forming a surface contact rather than a line contact with the edge of the mesh part 21 to achieve the effect of radial constraint. An annular support step is provided at the bottom of the groove to precisely control the insertion depth of the mesh part 21, and the annular support step has the function of axial stop. Positioning holes 13 are formed at the bottom of the limiting groove 14, establishing axial (depth), radial (concentricity), and circumferential (angle) positioning references to ensure precise alignment of the acoustic components with the sound outlet 12. The bottom end of the mesh portion 21 extends into and connects to the limiting groove 14. The mesh portion 21 must be fully inserted into the bottom of the limiting groove 14 to align with the positioning hole 13, avoiding loose connections or tilted assembly. During actual assembly, the bottom end of the mesh portion 21 and the limiting groove 14 can form an interference fit to create a damping interface, which can transmit the speaker vibration energy through the groove to the main structure of the ear shell 10, reducing resonance. At the same time, the annular support surface at the bottom of the limiting groove 14 disperses the impact force of a drop into radial compressive force, preventing local cracking of the positioning hole 13. In addition, the planar seal between the bottom end of the mesh portion 21 and the bottom of the groove can prevent dust, the silicone ring compression seal on the side wall of the limiting groove 14 can prevent splashing, and the microporous oleophobic coating around the positioning hole 13 can prevent corrosion from sweat.

[0044] In some embodiments, the ear shell 10 includes a support plate 15 located in the sound outlet 12. The support plate 15 abuts against the bottom side of the mesh portion 21. The contact surface of the support plate 15 can be designed as a slightly convex spherical surface, forming a surface contact with the mesh portion 21 rather than a point contact under assembly pressure. In one embodiment, the support plate 15 adopts a radial rib structure with a gradually changing rib width design (wider at the root and narrower at the end), reducing acoustic resistance while ensuring mechanical strength. In this embodiment, the end of the positioning foot 22 passes through the support plate 15 and fastens to the side of the support plate 15 away from the mesh portion 21. The bending and locking structure generates a mechanical self-locking effect. When the earphone is worn and pulled, the locking surface bears shear force rather than a peeling force that is prone to failure. At the same time, the locking end of the positioning foot 22 forms a closed loop of force flow between the ear shell 10, the support plate 15, and the mesh portion 21, which evenly distributes vibration energy to the entire ear shell 10 structure and reduces local stress concentration. In some embodiments, the mesh portion 21 and the positioning foot 22 are integrally connected, which can increase the structural strength, eliminate microscopic pores and slag inclusions caused by traditional welding or riveting, and improve the service life of the overall structure.

[0045] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. Headphones, characterized in that, The device includes an ear shell, a front cavity steel mesh, and a speaker. The ear shell has a receiving cavity and a sound outlet hole that communicates with the receiving cavity is formed on its surface. The speaker is fixedly connected to the receiving cavity. The front cavity steel mesh includes a connected mesh portion and a positioning foot. The mesh portion covers the sound outlet hole. The end of the positioning foot passes through the ear shell to extend into the receiving cavity. One end of the positioning foot extending into the receiving cavity is bent to fasten the cavity wall.

2. The earphone according to claim 1, characterized in that, The end of the positioning foot that extends into the accommodating cavity is bent by pressing and pressed against the cavity wall.

3. The earphone according to claim 2, characterized in that, The positioning foot includes a first plate and a second plate connected together. The first plate is connected between the mesh portion and the second plate. The first plate passes through the ear shell. The second plate is bent relative to the first plate and pressed against the cavity wall of the receiving cavity by riveting.

4. The earphone according to claim 3, characterized in that, The second plate is bent toward the side where the central axis of the mesh portion is located.

5. The earphone according to claim 1, characterized in that, The ear shell has positioning holes that communicate with the accommodating cavity. The number of positioning holes is the same as the number of positioning feet. The shape of the positioning holes is the same as the cross-sectional shape of the positioning feet. The positioning feet are inserted through the positioning holes one by one.

6. The earphone according to claim 5, characterized in that, The outer surface of the ear shell is recessed to form a limiting groove, the positioning hole is opened at the bottom of the limiting groove, and the bottom end of the mesh portion extends into and connects to the limiting groove.

7. The earphone according to claim 1, characterized in that, The ear shell includes a support plate located in the sound outlet, the support plate abutting against the bottom side of the mesh portion.

8. The earphone according to claim 7, characterized in that, The end of the positioning foot passes through the support plate and fastens to the side of the support plate away from the mesh portion.

9. The earphone according to claim 1, characterized in that, The number of positioning feet is multiple, and the multiple positioning feet are distributed rotationally symmetrically about the center of the mesh portion.

10. The earphone according to claim 1, characterized in that, The mesh portion and the positioning foot are integrally connected.

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