earphone

Abstract

The present invention discloses an earphone. The earphone comprises an earphone body, an earplug, and an elastic component. The earphone body comprises a sound outlet tube provided with a retaining portion. The earplug comprises an ear inlet and a sound guide tube connected to the ear inlet. The ear inlet is provided with a sound outlet hole, and the sound guide tube connects the sound outlet tube and the sound outlet hole. The elastic component is disposed on the sound guide tube and is fixedly secured by the retaining portion. The technical solution of the present invention achieves reliable installation of the sound outlet tube and the sound guide tube, strengthens the connection between the earplug and the sound outlet tube, and prevents the earplug from falling off the earphone body.

Description

Technical Field

[0001] The present invention relates to the technical field of earphones, and in particular to an earphone. Background Art

[0002] With the improvement of people's living standards, the use of TWS (True Wireless Stereo) headphones is becoming more and more popular. In order to meet people's increasingly high auditory experience of acoustic products, product updates are also faster and faster. The convenience and firmness of the in-ear TWS headphones' earplugs have a great impact on the user's product experience.

[0003] In the related art, the earplugs of in-ear TWS earphones are usually installed by putting a silicone sleeve on the earphone sound outlet tube, which has the technical problem that the earphones are not installed firmly and are easy to fall off. Summary of the Invention

[0004] The main purpose of the present invention is to provide an earphone, aiming to solve the technical problem that the earplug and the sound outlet tube in the earphone are not firmly installed and are easy to fall off.

[0005] To achieve the above-mentioned object, the earphones proposed in the present invention include:

[0006] An earphone body, the earphone body including a sound outlet tube, the sound outlet tube being provided with a clamping portion;

[0007] An earplug, the earplug comprising an ear inlet and a sound guide tube connected to the ear inlet, the ear inlet being provided with a sound outlet, the sound guide tube connecting the sound outlet tube and the sound outlet; and

[0008] The elastic component is arranged on the sound guide tube and is fixedly clamped with the clamping portion.

[0009] In one embodiment, the elastic component comprises:

[0010] a spring, provided at one end of the sound guide tube close to the sound outlet tube and used for being clamped with the clamping portion; and

[0011] A push-pull rod is located in the sound guide tube and connected to the spring sheet, so as to drive the spring sheet to separate from or clamp the clamping portion under the action of an external force.

[0012] In one embodiment, the clamping portion is a limiting boss provided on the inner wall of the sound outlet tube;

[0013] The elastic sheet can extend into the sound outlet tube and be clamped with the limiting boss under the action of the push-pull rod, so that the sound guide tube partially extends into the sound outlet tube.

[0014] In one embodiment, the spring piece is a disc structure covering the end of the sound guide tube, and the edge of the spring piece is engaged with the limiting boss;

[0015] The spring piece is provided with a plurality of sound holes communicating with the sound outlet tube and the sound guide tube.

[0016] In one embodiment, the spring piece and the sound guide tube are coaxially arranged, and the push-pull rod is connected to the central area of ​​the spring piece.

[0017] In one embodiment, the radial distance between the push-pull rod and the sound guide tube is defined as L1, and the radial distance between the sound guide tube and the edge of the spring is defined as L2, satisfying L1>L2.

[0018] In one embodiment, the limiting boss is arranged in a ring shape around the inner circumferential wall of the sound outlet tube.

[0019] In one embodiment, the spring, the push-pull rod, and the sound guide tube are an integral injection-molded part.

[0020] In one embodiment, a dust cover is provided on the outer periphery of the sound guide tube, and the dust cover is provided on the outside of the sound outlet tube.

[0021] In one embodiment, the outer peripheral wall of the sound outlet pipe is arranged to be a conical surface near one end of the sound guide pipe, and the dust cover is arranged to fit the conical surface.

[0022] In the earphones of the present invention, the earplug includes an in-ear portion and a sound guide tube connected to the in-ear portion. The sound guide tube is used to connect the sound outlet tube of the earphone body with the sound outlet hole in the in-ear portion to realize the sound output function of the earphone. By providing a clamping portion on the sound outlet tube and an elastic component on the sound guide tube, the elastic component and the clamping portion are used to clamp and fix the sound outlet tube to the sound guide tube, thereby achieving a secure connection between the earplug and the sound outlet tube, and achieving the purpose of preventing the earplug and the sound outlet tube from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of an earphone embodiment of the present invention when the earphone and earplug are in a disassembled state;

[0025] Figure 2 for Figure 1 A full cross-sectional view of an embodiment of the present invention;

[0026] Figure 3 This is a schematic structural diagram of an earphone and an earplug in an assembled state according to an embodiment of the earphone of the present invention;

[0027] Figure 4 for Figure 3 A full cross-sectional view of an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the earphone embodiment of the present invention when the push-pull rod is pulled outward.

[0029] Figure 6 for Figure 5 A full cross-sectional view of an embodiment of the present invention;

[0030] Figure 7 This is a schematic structural diagram of an elastic component in an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the assembly structure of the sound guide tube, the spring and the push-pull rod in an embodiment of the present invention.

[0032] Description of Figure Numbers:

[0033] Label name Label name 100 Headphones 230 Dust cover 110 case 300 Elastic components 120 Sound pipe 310 shrapnel 121 Clamping part 311 Sound hole 121a Limiting boss 320 Push-pull rod 200 earplugs 321 Rod body 210 In-ear 322 Operating head 220 Sound guide tube 400 dust screen

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides an earphone, which aims to improve the installation firmness of an earplug and an earphone body and prevent the earplug and the earphone body from falling off.

[0040] In the embodiment of the present invention, Figures 1 to 6 As shown, the earphone includes an earphone body 100 , an earplug 200 and an elastic component 300 .

[0041] The earphone body 100 includes a sound outlet tube 120, which is provided with a clamping portion 121; the earplug 200 includes an ear inlet 210 and a sound guide tube 220 connected to the ear inlet 210, the ear inlet 210 is provided with a sound outlet hole, and the sound guide tube 220 connects the sound outlet tube 120 and the sound outlet hole; the elastic component 300 is provided on the sound guide tube 220 and is clamped and fixed with the clamping portion 121.

[0042] The earphones are audio playback devices that are worn on the user's ears. The earphone body 100 includes a shell 110 and a sound outlet tube 120 provided on the shell 110. The shell 110 can be provided with audio playback related devices, such as an audio processor, a sensor or a speaker, etc. The audio signal inside the shell 110 can be transmitted through the sound outlet tube 120. The earplug 200 is used to be worn on the user's ear so that the sound of the earphone can be transmitted to the user's ear, realizing the function of the earphone to play sound. The earplug 200 includes an ear inlet 210 and a sound guide tube 220. The sound guide tube 220 serves to connect the sound outlet tube 120 and the sound outlet hole on the ear inlet 210, so that the sound in the earphone body 100 can pass through the sound outlet tube 120 and the sound guide tube 220 and then be transmitted from the sound outlet hole, realizing the function of the earphone to produce sound smoothly. In this embodiment, a clamping portion 121 is provided on the sound outlet tube 120. By arranging an elastic component 300 on the sound guide tube 220 and clamping and fixing the elastic component 300 with the clamping portion 121, the sound outlet tube 120 and the sound guide tube 220 are reliably installed, thereby increasing the connection firmness between the earplug 200 and the sound outlet tube 120 and achieving the purpose of preventing the earplug 200 and the sound outlet tube 120 from falling off.

[0043] It can be understood that the elastic component 300 can play the role of reliably connecting the sound guide tube 220 and the sound outlet tube 120. In actual application, the sound guide tube 220 can be regarded as the silicone sleeve structure in the prior art. In this embodiment, an elastic component 300 is added to the sound guide tube 220, and the elastic component 300 is used to clamp and fix it with the clamping part 121 on the sound outlet tube 120. Compared with the connection method of directly putting the silicone sleeve of the earplug 200 on the outside of the sound outlet tube 120 in the prior art, the connection force between the sound guide tube 220 and the sound outlet tube 120 is increased, so that the connection reliability between the earplug 200 and the earphone body 100 is improved, and it is less likely to fall off.

[0044] In actual application, the specific structure of the elastic component 300 can be a spring structure, a spring structure, a hook structure or an elastic sleeve structure, etc. As long as the elastic component 300 can be fixed to the holding portion 121, its specific structure is not limited here.

[0045] In actual application, the specific material of the earplug 200 can be determined according to the actual situation. For example, in order to improve user comfort, the earplug 210 can be made of silicone material or sponge material, so that the earplug 210 in contact with the user's ear has a certain flexibility, reducing the impact on the user's ear. The sound guide tube 220 is connected to the earplug 210, and the sound guide tube 220 and the earplug 210 can be integrally formed to simplify the molding process. In this case, the sound guide tube 220 can also be made of silicone material or sponge material. On this basis, the elastic component 300 can be made of an elastic material with a certain hardness, such as a metal part or a hard plastic part with a hardness greater than that of a silicone part, to ensure the clamping force between the elastic component 300 and the clamping part 121, thereby ensuring the structural stability of the earplug 200 and the sound outlet tube 120 after installation.

[0046] In practical applications, the structure of the retaining portion 121 on the sound outlet tube 120 can be determined according to actual conditions, and can be a snap structure, a hook structure, or a limiting boss structure, etc. The specific structure is not limited here, as long as it can be retained and fixed by the elastic component 300. The retaining portion 121 can be located inside the sound outlet tube 120 or outside the sound outlet tube 120.

[0047] In the earphone of the present invention, the earplug 200 includes an ear inlet portion 210 and a sound guide tube 220 connected to the ear inlet portion 210. The sound guide tube 220 is used to connect the sound outlet tube 120 of the earphone body 100 with the sound outlet hole on the ear inlet portion 210 to realize the sound output function of the earphone. By providing a clamping portion 121 on the sound outlet tube 120 and an elastic component 300 on the sound guide tube 220, the elastic component 300 is clamped and fixed with the clamping portion 121, thereby achieving a reliable installation of the sound outlet tube 120 and the sound guide tube 220, increasing the firmness of the connection between the earplug 200 and the sound outlet tube 120 and achieving the purpose of preventing the earplug 200 and the sound outlet tube 120 from falling off.

[0048] In one embodiment of the present invention, please refer to Figures 1 to 6 The elastic component 300 includes a spring piece 310 and a push-pull rod 320. The spring piece 310 is provided at one end of the sound guide tube 220 close to the sound outlet tube 120 and is used to be clamped with the clamping portion 121; the push-pull rod 320 is located in the sound guide tube 220 and is connected to the spring piece 310, so as to drive the spring piece 310 to disengage from or clamp the clamping portion 121 under the action of external force.

[0049] This embodiment illustrates the structure of the elastic component 300. The elastic component 300 includes a spring 310 for engaging with the engaging portion 121 and a push-pull rod 320 connected to the spring 310. The spring 310 is connected to the sound guide tube 220. The push-pull rod 320 is driven by an external force to disassemble and detach the spring 310 from the engaging portion 121. In actual use, the user can push or pull the push-pull rod 320 to disassemble and detach the earplug 200.

[0050] During installation, if Figures 1 to 4 The user can hold the earplug 200 and align the sound guide tube 220 with the sound outlet tube 120, and then push or press the push-pull rod 320 to drive the spring 310 to engage with the clamping portion 121 of the sound outlet tube 120, so that the sound guide tube 220 is connected to the sound outlet tube 120, thereby completing the installation of the earplug 200 and the sound outlet tube 120.

[0051] When disassembling, if Figure 5 and Figure 6 The user can pull the push-pull rod 320 to drive the spring 310 to disengage from the holding portion 121 of the sound outlet tube 120 , so that the sound guide tube 220 is separated from the sound outlet tube 120 , thereby realizing the disassembly of the earplug 200 and the sound outlet tube 120 .

[0052] It can be understood that the earphones in this embodiment have the characteristics of easy assembly and disassembly of the earplug 200 and the earphone body 100, and are firm and not easy to fall off after installation. The user can realize the clamping or disengagement function of the spring piece 310 and the clamping part 121 by driving the push-pull rod 320, which is easy to operate; at the same time, after installation, the clamping force of the spring piece 310 and the clamping part 121 is used to ensure the firmness of the installation of the earplug 200 and the sound outlet tube 120, which is not easy to fall off, thereby improving user comfort.

[0053] Taking into account the convenience of operation and the comfort of using the earplug 200, as an example, the push-pull rod 320 is located inside the sound guide tube 220, which will not affect the appearance of the earplug 200, that is, it will not affect the surface of the ear inlet 210 that contacts the user's ear, thereby ensuring the comfort of using the earplug 200. At the same time, the sound guide tube 220 is a hollow structure. By locating the push-pull rod 320 inside the sound guide tube 220, the user's fingers can easily reach into the push-pull rod 320 for operation, thereby improving the efficiency of disassembly and assembly. As an example, the push-pull rod 320 includes a rod body 321 connected to the spring 310 and an operating head 322 provided on the rod body 321. The extension direction of the rod body 321 is consistent with the axial direction of the sound guide tube 220. The operating head 322 can be set to a spherical structure with a diameter larger than the diameter of the rod body 321, which is convenient for user operation and improves the comfort of the user's hand. Optionally, the push-pull rod 320 uses a metal or plastic part with a certain hardness.

[0054] In practical applications, the spring piece 310 can be a metal part or a plastic part.

[0055] In one embodiment, the spring 310, the push-pull rod 320, and the sound guide tube 220 are integrally molded. Alternatively, the three can be integrally molded using insert injection molding to simplify the molding process and improve production efficiency.

[0056] In one embodiment of the present invention, please refer to Figures 1 to 6 The clamping portion 121 is a limiting boss 121a provided on the inner wall of the sound outlet tube 120 ; the spring piece 310 can extend into the sound outlet tube 120 and clamp with the limiting boss 121a under the action of the push-pull rod 320 , so that the sound guide tube 220 partially extends into the sound outlet tube 120 .

[0057] This embodiment illustrates the structure of the holding portion 121 by way of example. The holding portion 121 is a limiting boss 121a on the inner wall of the sound outlet tube 120. During the actual installation process, the spring 310 needs to extend from the outside into the sound outlet tube 120 and be clamped by the limiting boss 121a. At this time, the sound guide tube 220 partially extends into the sound outlet tube 120, ensuring that the sound can smoothly enter the sound guide tube 220 from the sound outlet tube 120.

[0058] It should be noted that, in order to ensure the clamping effect, the outer radial dimension of the spring piece 310 must be larger than the inner radial dimension of the limiting boss 121 a, thereby ensuring that the spring piece 310 will not fall off the limiting boss 121 a.

[0059] As an example, Figures 1 to 4 During the actual installation process, the user holds the earplug 200 and aligns the sound guide tube 220 with the sound outlet tube 120, then pushes or presses the push-pull rod 320 toward the sound outlet tube 120, so that the spring piece 310 is close to the opening of the sound outlet tube 120 and deforms so that it can smoothly slide over the limiting boss 121a into the sound outlet tube 120, and then releases the push-pull rod 320, and the spring piece 310 recovers its deformation, so that the spring piece 310 is locked with the limiting boss 121a, thereby completing the installation of the earplug 200.

[0060] As an example, Figure 5 and Figure 6 During the actual disassembly process, the user pulls the push-pull rod 320 outward, and the spring piece 310 is deformed under the force, so that it can smoothly slide over the limiting boss 121a and disengage from the sound outlet tube 120. Then, the push-pull rod 320 is released, the spring piece 310 recovers its deformation, and the sound guide tube 220 is separated from the sound outlet tube 120, thereby realizing the disassembly of the earplug 200.

[0061] In practical applications, the structural shape of the limiting boss 121a can be determined based on actual conditions. For example, the limiting boss 121a can be an annular structure surrounding the inner circumference of the sound outlet tube 120, or the limiting boss 121a can be a plurality of boss structures spaced apart on the inner circumference of the sound outlet tube 120. In this embodiment, considering the reliability of the structural fit, it is preferred that the limiting boss 121a be configured as an annular structure surrounding the inner circumference of the sound outlet tube 120. This increases the mating area with the spring 310 and balances the circumferential force, thereby preventing uneven force on the spring 310 during assembly and disassembly, which may cause the earplug 200 to become stuck.

[0062] It is understandable that the shape and structure of the spring piece 310 can also be determined according to actual conditions, such as a circular structure, a square structure, a triangular structure or other special-shaped structures, and its specific structural shape is not limited here.

[0063] In one embodiment of the present invention, please refer to Figure 2 、 Figure 4 、 Figures 6 to 8 The spring piece 310 is a disc structure that covers the end of the sound guide tube 220. The edge of the spring piece 310 is engaged with the limiting boss 121a. The spring piece 310 is provided with a plurality of sound holes 311 that connect the sound outlet tube 120 and the sound guide tube 220.

[0064] This embodiment illustrates the structure of the spring clip 310. The spring clip 310 is a circular disc. The perimeter of the end of the sound guide tube 220 is connected to the spring clip 310, ensuring the strength of the connection between the spring clip 310 and the sound guide tube 220. The spring clip 310 also supports the sound guide tube 220, radially expanding it and ensuring smooth sound output. Furthermore, the spring clip 310 balances the force applied to the sound guide tube 220, preventing it from being skewed.

[0065] The edge of the spring clip 310 engages with the retaining projection 121a. Since the spring clip 310 is a circular disc, the mating area between the spring clip 310 and the retaining projection 121a is ensured, while also balancing the circumferential force, preventing uneven force on the spring clip 310 during assembly and disassembly, which could cause the earplug 200 to become stuck. For example, the spring clip 310 is a circular disc, and the retaining projection 121a is an annular projection. During installation, the circumferential edge of the spring clip 310 engages with the circumferential edge of the retaining projection 121a, further increasing the mating area and improving the anti-drop performance.

[0066] In order to ensure smooth sound output from the earphone, the spring piece 310 is provided with a plurality of sound holes 311 connecting the sound outlet tube 120 and the sound guide tube 220. In actual application, the plurality of sound holes 311 can be distributed on the spring piece 310 in a circular array or in a discrete manner.

[0067] In one embodiment of the present invention, please refer to Figure 2 、 Figure 4 、 Figures 6 to 8 The spring piece 310 is coaxially arranged with the sound guide tube 220 , and the push-pull rod 320 is connected to the central area of ​​the spring piece 310 .

[0068] In this embodiment, the push-pull rod 320 is connected to the center area of ​​the spring 310. Therefore, when the user pushes or pulls the push-pull rod 320, the force applied to the spring 310 is always in the center area. Therefore, when the center area of ​​the spring 310 is deformed by force, the pulling force applied to the periphery of the spring 310 is more balanced. Compared to placing the push-pull rod 320 in other areas of the spring 310, the spring 310 has greater fatigue resistance and a longer service life. Furthermore, the push-pull rod 320 is located within the sound guide tube 220, and the spring 310 and the sound guide tube 220 are coaxially arranged. Therefore, the push-pull rod 320 is also located in the center of the sound guide tube 220. Therefore, when the user operates the push-pull rod 320, friction with the sound guide tube 220 is avoided, making operation more convenient for the user.

[0069] The earplug 200 is in a state of being moved in an upward direction so that the earplug 200 can move in an upward direction, thereby preventing the earplug 200 from sliding out of the earplug 200 and causing the earplug 200 to fall out of the ear.

[0070] Further, if Figure 8 , the radial distance between the push-pull rod 320 and the sound guide tube 220 in the spring 310 is defined as L1, and the radial distance between the sound guide tube 220 and the edge of the spring 310 is defined as L2, satisfying L1>L2. In this embodiment, by setting the radial distance between the push-pull rod 320 and the sound guide tube 220 to be greater than the radial distance between the sound guide tube 220 and the edge of the spring 310, the difference between the resistance arm (the radial distance between the push-pull rod 320 and the edge of the spring 310) and the power arm (the radial distance between the sound guide tube 220 and the edge of the spring 310) is further increased. Therefore, in actual use, the user needs greater force to remove the earplug 200 by directly pulling the sound guide tube 220, further improving the anti-drop performance.

[0071] As an example, the sound guide tube 220 is arranged close to the edge of the spring 310, which has a better structural reliability effect and can also ensure the flow area of ​​the sound output channel.

[0072] In one embodiment of the present invention, please refer to Figure 2 、 Figure 4 、 Figures 6 to 8 A dust cover 230 is provided on the outer periphery of the sound guide tube 220 , and the dust cover 230 is provided on the outside of the sound outlet tube 120 .

[0073] As can be understood, the dust cover 230 prevents external impurities such as dust and lint from entering the sound outlet tube 120. By providing the dust cover 230 on the outside of the sound guide tube 220, when the earplug 200 is assembled with the earphone body 100, the sound guide tube 220 extends into the sound outlet tube 120, and the dust cover 230 is arranged on the outside of the sound outlet tube 120. This achieves a simultaneous support effect on the inner and outer walls of the sound outlet tube 120, so that the sound outlet tube 120 is clamped between the sound guide tube 220 and the dust cover 230, further improving the connection strength between the earplug 200 and the sound outlet tube 120.

[0074] Furthermore, an outer peripheral wall of the sound outlet pipe 120 close to one end of the sound guide pipe 220 is configured as a cone, and the dust cover 230 is configured to fit the cone.

[0075] In this embodiment, by providing a conical surface on the outer wall of the sound outlet tube 120, the contact area between the sound outlet tube 120 and the dust cover 230 is increased, achieving a better dustproof effect. At the same time, the dust cover 230 fits the conical surface, preventing sound leakage and further improving privacy.

[0076] Optionally, the dust cover 230 may adopt an umbrella-shaped structure, and the conical surface may also serve as a guide for the installation of the dust cover 230 .

[0077] To further improve the dust protection effect, please refer to Figure 2 、 Figure 4 as well as Figure 6 A dust screen 400 is provided in the sound outlet pipe 120. Optionally, the dust screen 400 is a metal part or a plastic part. When it is a metal part, the dust screen 400 is welded to the sound outlet pipe 120; when it is a plastic part, the dust screen 400 is glued to the sound outlet pipe 120.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A headset, characterized in that: include: An earphone body, the earphone body including a sound outlet tube, the sound outlet tube being provided with a clamping portion; An earplug, the earplug comprising an ear inlet and a sound guide tube connected to the ear inlet, the ear inlet being provided with a sound outlet, the sound guide tube connecting the sound outlet tube and the sound outlet; as well as An elastic component is provided on the sound guide tube and is fixedly engaged with the engaging portion; The elastic component comprises: a spring, provided at one end of the sound guide tube close to the sound outlet tube and used for clamping with the clamping portion; and A push-pull rod is located in the sound guide tube and connected to the spring sheet, so as to drive the spring sheet to separate from or clamp the clamping portion under the action of an external force.

2. The earphone according to claim 1, wherein The clamping portion is a limiting boss provided on the inner wall of the sound outlet tube; The elastic sheet can extend into the sound outlet tube and be clamped with the limiting boss under the action of the push-pull rod, so that the sound guide tube partially extends into the sound outlet tube.

3. The earphone according to claim 2, wherein The spring piece is a disc structure covering the end of the sound guide tube, and the edge of the spring piece is engaged with the limiting boss; The spring piece is provided with a plurality of sound holes communicating with the sound outlet tube and the sound guide tube.

4. The earphone according to claim 3, wherein The spring piece is coaxially arranged with the sound guide tube, and the push-pull rod is connected to the central area of ​​the spring piece.

5. The earphone according to claim 4, wherein The distance between the push-pull rod and the sound guide tube in the radial direction of the elastic sheet is defined as L1, and the distance between the sound guide tube and the edge of the elastic sheet in the radial direction is defined as L2, satisfying L1>L2.

6. The earphone according to claim 2, wherein The limiting boss is arranged in a ring shape around the inner circumferential wall of the sound outlet tube.

7. The earphone according to any one of claims 1 to 6, characterized in that The spring piece, the push-pull rod and the sound guide tube are an integral injection-molded part.

8. The earphone according to any one of claims 1 to 6, wherein: A dust cover is provided on the outer periphery of the sound guide tube, and the dust cover is arranged on the outside of the sound outlet tube.

9. The earphone according to claim 8, wherein An outer peripheral wall of the sound outlet pipe close to one end of the sound guide pipe is provided with a conical surface, and the dust cover is provided in close contact with the conical surface.

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