Soundproof earplug

Abstract

This invention provides a noise-isolating earplug, comprising a flexible main body and a noise-absorbing component. The flexible main body is inserted into the ear canal and has a filling cavity for accommodating noise-reducing filler. The noise-absorbing component includes a noise-absorbing plug and a filter. The noise-absorbing plug is located at the top of the flexible main body, and the filter is located at the top of the noise-absorbing plug. A noise-absorbing channel is provided between the noise-absorbing plug and the filling cavity. By using a flexible main body capable of accommodating noise-reducing filler for insertion into the ear canal, both comfort and noise insulation are improved. Furthermore, by placing the noise-absorbing component at the top of the flexible main body, sound wave vibrations of various frequencies are absorbed, thereby significantly reducing and absorbing external sound waves, achieving excellent noise insulation.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction equipment, specifically to a soundproof earplug. Background Technology

[0002] Earplugs and earmuffs are devices that reduce external noise interference and provide hearing protection. Earplugs are more compact and suitable for more scenarios, but current earplugs are often made of foam, which is made of PU or PVC. When wearing them, the foam is first crumpled and then inserted into the ear canal to expand, relying on its porous structure to absorb sound waves. However, these types of earplugs have poor noise isolation and are not very comfortable. Therefore, there is a need for earplugs that offer both good noise isolation and comfort.

[0003] In view of the above, this application is hereby submitted. Utility Model Content

[0004] This invention provides a noise-isolating earplug to solve at least one of the aforementioned technical problems.

[0005] To address the aforementioned problems, as one aspect of this utility model, a noise-isolating earplug is provided, comprising:

[0006] A flexible main body capsule, which is inserted into the ear canal of a human body, and the interior of the flexible main body capsule is provided with a filling cavity for accommodating noise-reducing filling material;

[0007] The noise reduction assembly includes a noise reduction plug and a filter screen. The noise reduction plug is disposed on the top of the flexible main body bladder, and the filter screen is disposed on the top of the noise reduction plug. The noise reduction plug has a noise reduction channel between the filter screen and the filling cavity.

[0008] Furthermore, the silencing channel is a cavity, and the filter screen is disposed at the top of the silencing channel.

[0009] Preferably, the top of the flexible main body capsule has a filling through hole communicating with the filling cavity; the silencing plug is used to seal the filling through hole.

[0010] Preferably, the filling through hole is formed by the downward indentation of the peripheral wall of the flexible main body bladder to form a cylindrical wall, and the outer periphery of the silencing plug is provided with a lower flange and an upper flange for sealing both ends of the cylindrical wall.

[0011] Preferably, the flexible main body is made of silicone or rubber, and the silencing plug is provided with at least one sealing ring between the lower flange and the upper flange.

[0012] Preferably, the silencing channel is at least partially located within the filling through hole.

[0013] Preferably, it also includes an ear cap for covering the muffler plug. The ear cap includes an inner shell for connecting with the muffler plug, an outer shell located outside the inner shell, and a decorative body for connecting the inner shell and the outer shell. The decorative body has a decorative cover on its top.

[0014] Preferably, the filling cavity is further provided with a noise-reducing filler, which is an inert gas, air, mineral wool, glass fiber, or liquid material.

[0015] Preferably, the filter is a metal mesh or polymer fiber with a dense mesh structure, and the filter seals the top outlet of the noise reduction channel.

[0016] Preferably, the filter mesh or the silencing channel is provided with a resonant cavity that can absorb multiple sound wave frequencies.

[0017] This invention relates to a sound-insulating earplug that uses a flexible main body that can accommodate noise-reducing filler for insertion into the ear canal. This improves both comfort and sound insulation. Furthermore, by setting a sound-absorbing component at the top of the flexible main body, when external sound waves are transmitted to the flexible main body, the body vibrates and transmits the vibrations to the noise-reducing filler inside the cavity. The filler weakens the vibrations and then transmits them to the sound-absorbing channel of the sound-absorbing plug, where they are absorbed by a filter located above the sound-absorbing channel. This significantly reduces and absorbs external sound wave vibrations, achieving excellent sound insulation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the noise-isolating earplug according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure in the explosion state;

[0021] Figure 4 yes Figure 2 A schematic diagram of the flexible main body capsule and the sound-absorbing components;

[0022] Figure 5 yes Figure 4 A schematic diagram of the flexible main capsule structure;

[0023] Figure 6 yes Figure 4 A schematic diagram of the structure of the silencer plug.

[0024] Figure label:

[0025] 1. Flexible main body capsule; 11. Filling cavity; 12. Filling through hole; 13. Cylindrical wall; 2. Silencing assembly; 21. Silencing plug; 211. Silencing channel; 212. Lower flange; 213. Upper flange; 214. Sealing ring; 22. Filter screen; 3. Ear cap; 31. Inner shell; 32. Outer shell; 33. Decorative body; 331. Decorative cover. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] Please refer to Figures 1 to 6 A noise-isolating earplug, comprising a flexible main body 1 and a noise-absorbing component 2.

[0029] The flexible main body 1 is used to be inserted into the ear canal of the human body, and the flexible main body 1 has a filling cavity 11 for accommodating noise reduction filling material; the flexible main body 1 is made of flexible sealing material.

[0030] The noise reduction assembly 2 includes a noise reduction plug 21 and a filter screen 22. The noise reduction plug 21 is disposed on the top of the flexible main body 1, and the filter screen 22 is disposed on the top of the noise reduction plug 21. The noise reduction plug 21 has a noise reduction channel 211 between the filter screen 22 and the filling cavity 11.

[0031] This invention provides a soundproof earplug with a flexible main body 1 that can accommodate noise-reducing filler for insertion into the ear canal. This improves both comfort and sound insulation. Furthermore, by setting a sound-absorbing component 2 at the top of the flexible main body 1, when external sound waves are transmitted to the flexible main body 1, the 1 vibrates and is transmitted to the noise-reducing filler in the filling cavity 11. The filler weakens the sound wave vibration and then transmits it to the sound-absorbing channel 211 of the sound-absorbing plug 21, where it is absorbed by the filter 22 located above the sound-absorbing channel 211. Alternatively, when external sound waves are transmitted to the sound-absorbing component 2, they are first filtered and absorbed by the filter 22, and then transmitted through the sound-absorbing channel 211 to the filling cavity 11 where they are absorbed by the noise-reducing filler. This significantly reduces and absorbs external sound wave vibrations, achieving excellent sound insulation.

[0032] The flexible main body bladder 1 can be a sealed structure itself. Noise-reducing filler material of gas or liquid can be filled into the filling cavity 11 through the air valve or ball head to ensure that the noise-reducing filler material will not leak.

[0033] In this embodiment, the top of the flexible main body bladder 1 has a filling through hole 12 communicating with the filling cavity 11; the silencing plug 21 is used to seal the filling through hole 12. This eliminates the need for a separate air valve or ball joint on the flexible main body bladder 1, reducing production costs. Furthermore, the bottom of the silencing plug 21, i.e., the bottom wall of the silencing channel 211, can be located inside the filling cavity 11, directly contacting the noise-reducing filler inside the filling cavity 11, improving the transmission efficiency of sound wave vibrations and facilitating the absorption of sound wave vibrations, further enhancing the sound insulation effect.

[0034] For further details, please refer to... Figures 4 to 6 The filling through-hole 12 is formed by a downward indentation of the peripheral wall of the flexible main body bladder 1 to form a cylindrical wall 13. The outer periphery of the silencing plug 21 is provided with a lower flange 212 and an upper flange 213 for sealing both ends of the cylindrical wall 13. This structure is simple, has low production cost, and provides a good sealing effect. In this embodiment, the flexible main body bladder 1 is made of silicone, which is both flexible and elastic. In other embodiments, the flexible main body bladder 1 can be made of rubber or other elastic soft materials, which facilitates the installation of the silencing plug 21 and enables a good sealing effect between the silencing plug 21 and the plug.

[0035] Furthermore, the silencing plug 21 is provided with at least one sealing ring 214 between the lower flange 212 and the upper flange 213, further improving the sealing effect within the filling cavity 11 and enhancing its pressure resistance and leakage prevention capability. In this embodiment, the number of sealing rings 214 is one; in other embodiments, the number can be set as needed.

[0036] The cylindrical wall 13 of the filling through hole 12 has a certain height, and the silencing channel 211 is at least partially located inside the filling through hole 12, thereby further improving the sound wave vibration transmission and silencing effect between the silencing channel 211 and the flexible main body 1.

[0037] In this embodiment, the noise-canceling channel 211 is a cavity, and the filter 22 is disposed on top of the noise-canceling channel 211. The filter 22 selectively blocks, absorbs, or reflects sound waves through its physical structure and material properties, thereby reducing external noise entering the ear canal.

[0038] The filter 22 can block high-frequency sound waves (such as human voices and sharp noises) through its dense mesh structure and the sound wave diffraction effect. For low-frequency sound waves (such as traffic noise and air conditioner hum), a multi-level composite structure can be used to extend the sound wave path and convert it into heat energy for dissipation. In addition, by setting tiny cavities within the filter 22, the energy of sound waves at specific frequencies can be converted into mechanical vibrations for dissipation using the principle of resonance, thus specifically weakening interference noise.

[0039] In a preferred embodiment, the filter mesh 22 is a metal mesh or polymer fiber with a dense mesh structure, and the filter mesh 22 seals the top outlet of the silencing channel 211. This is beneficial for shielding and absorbing sound waves from various frequency bands from the outside.

[0040] In other preferred embodiments, a resonant cavity capable of absorbing multiple sound wave frequencies is provided within the filter mesh 22 or the silencing channel 211. By setting resonant cavities of different volumes, sound waves of different frequencies can be absorbed respectively; for example, multiple cavities with a volume of 0.1 cm³ can be designed. 3 -0.5cm 3 A high-frequency microcavity (>2kHz) was designed, with multiple cavities having a volume of 0.5cm². 3 -2cm 3 Mid-frequency microcavity (0.5kHz-2kHz), designed with multiple cavities having a volume of 2cm³. 3 -5cm 3 The low-frequency microcavity (<0.5kHz) enables noise reduction across the entire frequency band.

[0041] In this embodiment, a noise-reducing filler is also included in the filling cavity 11. The noise-reducing filler can be an inert gas, air, mineral wool, glass fiber or liquid material. The above materials can reduce noise through sound absorption, vibration reduction and other principles, without affecting the comfort of using the flexible main body bladder 1.

[0042] In this embodiment, an ear cap 3 is also included. The ear cap 3 is used to cover the noise-canceling plug 21. The ear cap 3 includes an inner shell 31 for connecting with the noise-canceling plug 21, an outer shell 32 located outside the inner shell 31, and a decorative body 33 for connecting the inner shell 31 and the outer shell 32. The decorative body 33 is provided with a decorative cover 331 on its top, thereby further increasing the aesthetics of the earplug and transmitting external sound wave vibrations to the noise-canceling component 2 for noise reduction before transmitting them to the filling cavity 11 of the flexible main body bladder 1 with noise-reducing filling material for further noise reduction.

[0043] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A noise-isolating earplug, characterized in that, include: A flexible main body capsule, which is inserted into the ear canal of a human body, and the interior of the flexible main body capsule is provided with a filling cavity for accommodating noise-reducing filling material; The noise reduction assembly includes a noise reduction plug and a filter screen. The noise reduction plug is disposed on the top of the flexible main body bladder, and the filter screen is disposed on the top of the noise reduction plug. The noise reduction plug has a noise reduction channel between the filter screen and the filling cavity.

2. The sound isolating earplug of claim 1, wherein, The silencing channel is a cavity, and the filter screen is disposed at the top of the silencing channel.

3. The sound isolating earplug of claim 1 or 2, wherein, The top of the flexible main body capsule has a filling through hole that communicates with the filling cavity; the silencing plug is used to seal the filling through hole.

4. The sound isolating earplug of claim 3, wherein, The filling through hole is formed by the downward indentation of the peripheral wall of the flexible main body bladder to form a cylindrical wall, and the outer periphery of the silencing plug is provided with a lower flange and an upper flange for sealing both ends of the cylindrical wall.

5. The sound isolating earplug of claim 4, wherein, The flexible main body is made of silicone or rubber, and the silencing plug is provided with at least one sealing ring between the lower flange and the upper flange.

6. The sound isolating earplug of claim 4, wherein, The silencing channel is at least partially located within the filling through-hole.

7. The sound isolating earplug of claim 3, wherein, It also includes an ear cap for covering the muffler plug. The ear cap includes an inner shell for connecting with the muffler plug, an outer shell located outside the inner shell, and a decorative body for connecting the inner shell and the outer shell. The decorative body has a decorative cover on its top.

8. The sound isolating earplug of claim 3, wherein, It also includes a noise-reducing filler material that is filled in the filling cavity, the noise-reducing filler material being an inert gas, air, mineral wool, glass fiber, or liquid material.

9. The sound isolating earplug of claim 1, wherein, The filter screen is a metal mesh or polymer fiber with a dense mesh structure and multiple layers, and the filter screen seals the top outlet of the noise reduction channel.

10. The sound isolating earplug of claim 9, wherein, The filter mesh or the silencing channel is provided with multiple resonant cavities that can absorb various sound wave frequencies.

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