Detachable earplug

Abstract

The utility model discloses a detachable earplug. The detachable earplug comprises a first shell, a second shell and at least one air leakage hole, the first shell is provided with a first opening, and the bottom of the first opening is provided with a first channel communicated with the outside; a cavity is formed in the second shell, sound absorption cotton used for sound insulation is fixed in the cavity, and a second channel communicated with the outside is formed in the bottom of the cavity; the sound-absorbing cotton is detachably mounted in the opening of the first shell, and the second channel is communicated with the first channel; the air leakage hole starts from the cavity of the second shell, sequentially penetrates through the second shell and the first shell and then is communicated with the outside. The anti-flatulence device can achieve a good anti-flatulence effect.

Description

Technical Field

[0001] The utility model relates to the technical field of earplugs, in particular to a detachable earplug. Background Art

[0002] In a noisy environment, earplugs, as common labor protection articles for people to reduce noise interference, can block noise by plugging them into the ears. Among them, conventional earplugs are generally made of silica gel, low-pressure foam material, or high-elastic polyester material. After being inserted into the ear canal, they are in close contact with the external auditory canal to isolate sound from entering the middle ear and inner ear (eardrum), achieving the purpose of sound insulation and thus protecting the hearing of workers.

[0003] Some conventional earplugs are integrally formed solid structures, which are relatively hard and prone to flatulence when inserted into the ear canal. When used for a long time, they will cause compression on the human ear and have an obvious sense of swelling pain when worn.

[0004] Some other earplugs with a detachable structure, such as a noise shielding and sound wave filtering earplug disclosed in the existing patent 202223289069.X, divide the earplug into three parts: a detachable noise reduction ear cap, a silica gel ear fin, and a noise filter, which is convenient for disassembly and assembly; when worn, it has an anti-flatulence effect through the design of ventilation holes; through multiple layers of noise reduction ear caps, it will not cause a sense of compression on the ear canal when worn and can fit closely with the ear canal. However, from the cross-sectional structure diagram of this patent, although ventilation holes are provided in the ear cap, the noise filter inserted at the outlet of the ventilation hole is still a solid structure, which will block the ventilation holes to a certain extent and reduce the anti-flatulence effect; in addition, this patent uses a noise filter that requires power supply and may need to be removed for convenient charging, resulting in cumbersome operation. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a detachable earplug that can achieve a better anti-flatulence effect.

[0006] To solve the above technical problem, the utility model discloses a detachable earplug, which includes a first shell, a second shell, and at least one air vent hole;

[0007] The first shell is provided with a first opening, and a first channel communicating with the outside is provided at the bottom of the first opening;

[0008] A cavity is provided in the second shell, a sound-absorbing cotton for sound insulation is fixed in the cavity, and a second channel communicating with the outside is provided at the bottom of the cavity;

[0009] The sound-absorbing cotton is detachably installed in the opening of the first shell, and the second channel is communicated with the first channel;

[0010] The vent hole starts from the cavity of the second housing, passes through the second housing and the first housing in sequence, and then communicates with the outside world.

[0011] As an alternative embodiment, the cavity includes a first sub-cavity and a second sub-cavity that communicate with each other; the sound-absorbing cotton is fixed in the first sub-cavity, the bottom of the second sub-cavity communicates with the second channel, and the first sub-cavity communicates with the second channel through the second sub-cavity.

[0012] As yet another alternative embodiment, a breathable mesh is provided at the connection between the bottom of the second sub-cavity and the second channel.

[0013] As yet another alternative embodiment, a protrusion is provided at the bottom of the second housing, and the second channel is the second through-hole in the protrusion.

[0014] As yet another alternative embodiment, the first housing includes a sound outlet nozzle and a sleeve; the first opening is located at the top of the sleeve, and a second opening communicating with the first opening is further provided at the bottom of the sleeve; the top of the sound outlet nozzle is hermetically clamped to the second opening of the sleeve, and the first channel is the first through-hole in the sound outlet nozzle.

[0015] As yet another alternative embodiment, the protrusion is coaxially connected by a first sub-protrusion and a second sub-protrusion in the direction from the top to the bottom, and the size of the first sub-protrusion is larger than that of the second sub-protrusion;

[0016] The first through-hole is sequentially communicated by a first sub-through-hole, a second sub-through-hole, and a third sub-through-hole in the direction from the top to the bottom, and the diameters of the first sub-through-hole, the second sub-through-hole, and the third sub-through-hole decrease in sequence;

[0017] The third sub-through-hole communicates with the second through-hole;

[0018] The first sub-through-hole is in transitional fit with the first sub-protrusion;

[0019] The second sub-through-hole is in clearance fit with the second sub-protrusion; a groove is provided on the outer wall of the connection between the second sub-protrusion and the first sub-protrusion, and a sealing ring is provided in the groove, and the sealing ring is in interference fit with the second sub-through-hole.

[0020] As yet another alternative embodiment, the material of the sleeve is silicone.

[0021] As yet another alternative embodiment, the material of the sealing ring is silicone.

[0022] Compared with the prior art, the embodiments of the present utility model have the following beneficial effects:

[0023] In the detachable earplug of the embodiment of the present utility model, channels are provided in both shells. When the earplug is inserted into the ear canal, the excess gas generated by the compression in the ear canal is discharged into the cavity along the channels of the two shells, and then discharged to the outside through the air vents communicating with the cavity. There is no structural obstruction in the whole exhaust process, so the air permeability is better, and a better anti-flatulence effect can be achieved. Sound-absorbing cotton is arranged in the cavity of the second shell, which can convert the absorbed sound energy into heat energy to achieve the effect of reducing noise, and the structure is simple, without the need to set a noise filter that requires power supply and has a more complicated usage method. Since the sound-absorbing cotton will slightly affect the air pressure stability in the cavity while reducing noise, the design that the channel of the second shell communicates with the internal cavity and the air vent is connected to the outside starting from the cavity helps to ensure the air pressure stability in the cavity and avoid noise caused by unstable air pressure in the channel. It can be seen that the channel can not only prevent flatulence but also ensure the normal operation of the sound-absorbing cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is a schematic structural diagram of a detachable earplug disclosed in an embodiment of the present utility model;

[0026] Figure 2 is a schematic cross-sectional structural diagram of a detachable earplug disclosed in an embodiment of the present utility model;

[0027] Figure 3 is a schematic structural diagram of a housing of a detachable earplug disclosed in an embodiment of the present utility model;

[0028] Figure 4 is a schematic structural diagram of a sound outlet nozzle of a detachable earplug disclosed in an embodiment of the present utility model;

[0029] Figure 5 is a schematic structural diagram of a second shell of a detachable earplug disclosed in an embodiment of the present utility model;

[0030] Figure 6 is a partial structural schematic diagram of a second shell of a detachable earplug disclosed in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0032] See Figure 1 , an embodiment of the present utility model discloses a detachable earplug, which includes a first housing 1, a second housing 2 and at least one air vent 3;

[0033] The first housing 1 is provided with a first opening 111, and a first channel 121 communicating with the outside is provided at the bottom of the first opening 111;

[0034] A cavity 21 is provided in the second housing 2, a sound-absorbing cotton 4 for sound insulation is fixed in the cavity 21, and a second channel 22 communicating with the outside is provided at the bottom of the cavity 21;

[0035] The sound-absorbing cotton is detachably installed in the opening of the first housing 1, and the second channel 22 is communicated with the first channel 121;

[0036] The air vent 3 starts from the cavity 21 of the second housing 2, passes through the second housing 2 and the first housing 1 in sequence, and then communicates with the outside.

[0037] In this embodiment, when external sound passes through the second housing 2, it is absorbed by the sound-absorbing cotton 4 and then enters the ear canal through the channels of the two housings. The ear canal only receives very weak sound.

[0038] Similar to the existing detachable earplugs, the detachable earplug in the embodiment of the present utility model is composed of two housings to form an earplug, and the two housings are detachably installed to realize the detachable and installable earplug, ensuring the convenience of disassembly, installation and replacement of the earplug.

[0039] In contrast, the detachable earplugs in the embodiments of the present utility model are provided with channels in both shells. When the earplugs are inserted into the ear canal, the excess gas generated by the compression in the ear canal is discharged into the cavity 21 along the channels of the two shells, and then discharged to the outside through the air vents 3 communicating with the cavity 21. There is no structural obstruction in the whole exhaust process, so the air permeability is better, and a better anti-bloating effect can be achieved. A sound-absorbing cotton 4 is arranged in the cavity 21 of the second shell 2, which can convert the absorbed sound energy into heat energy to achieve the effect of reducing noise, and the structure is simple, without the need to set a noise filter that requires power supply and has a more cumbersome usage method. Since the sound-absorbing cotton 4 will slightly affect the air pressure stability in the cavity 21 while achieving noise reduction, the design that the channel of the second shell 2 communicates with the internal cavity 21 and the air vent 3 is connected to the outside starting from the cavity 21 helps to ensure the air pressure stability in the cavity 21 and avoid noise caused by unstable air pressure in the channel. It can be seen that the channel can not only prevent flatulence but also ensure the normal operation of the sound-absorbing cotton 4.

[0040] In an alternative embodiment, the cavity 21 includes a first sub-cavity 211 and a second sub-cavity 212 that communicate with each other; the sound-absorbing cotton 4 is fixed in the first sub-cavity 211, the bottom of the second sub-cavity 212 communicates with the second channel 22, and the first sub-cavity 211 communicates with the second channel 22 through the second sub-cavity 212.

[0041] In yet another alternative embodiment, a breathable mesh cloth 5 is provided at the connection between the bottom of the second sub-cavity 212 and the second channel 22 to limit the air permeability of the channel at this place.

[0042] In yet another alternative embodiment, a protrusion 23 is provided at the bottom of the second shell 2, and the second channel 22 is the second through hole in the protrusion.

[0043] In yet another alternative embodiment, the first shell 1 includes a sound outlet nozzle 12 and a housing 11; the first opening 111 is located at the top of the housing 11, and a second opening 112 communicating with the first opening 111 is further provided at the bottom of the housing 11; the top of the sound outlet nozzle 12 is hermetically clamped with the second opening 112 of the housing 11, and the first channel 121 is the first through hole in the sound outlet nozzle 12.

[0044] In yet another alternative embodiment, the protrusion is coaxially connected by a first sub-protrusion 231 and a second sub-protrusion 232 in the direction from the top to the bottom, and the size of the first sub-protrusion 231 is larger than that of the second sub-protrusion 232;

[0045] The first through hole is formed by sequentially connecting a first sub-through hole 1211, a second sub-through hole 1212, and a third sub-through hole 1213 in the direction from the top to the bottom, and the diameters of the first sub-through hole 1211, the second sub-through hole 1212, and the third sub-through hole 1213 decrease in sequence;

[0046] The third sub-through hole 1213 communicates with the second through hole;

[0047] The first sub-through hole 1211 is in transitional fit with the first sub-projection 231;

[0048] The second sub-through hole 1212 is in clearance fit with the second sub-projection 232; a groove is provided on the outer wall of the second sub-projection 232 at the connection with the first sub-projection 231, and a sealing ring 6 is provided in the groove, and the sealing ring 6 is in interference fit with the second sub-through hole 1212.

[0049] Optionally, the first sub-through hole 1211 can be a square through hole or a circular through hole. Correspondingly, the first sub-projection 231 is a square column projection or a cylindrical projection.

[0050] In another alternative embodiment, the material of the housing 11 is silicone.

[0051] In another alternative embodiment, the material of the sealing ring 6 is silicone.

[0052] What is disclosed in the content of the embodiments of the present invention is only the preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable earplug, characterized in that: It includes a first shell, a second shell and at least one air leakage hole; The first shell is provided with a first opening, and a first channel communicating with the outside is provided at the bottom of the first opening; A cavity is provided in the second shell, sound-absorbing cotton for sound insulation is fixed in the cavity, and a second channel connected to the outside is provided at the bottom of the cavity; The sound-absorbing cotton is detachably installed in the opening of the first shell, and the second channel is connected to the first channel; The air leakage hole starts from the cavity of the second shell, passes through the second shell and the first shell in sequence, and then communicates with the outside.

2. The detachable earplug according to claim 1, characterized in that: The cavity includes a first sub-cavity and a second sub-cavity which are interconnected; the sound-absorbing cotton is fixed in the first sub-cavity, the bottom of the second sub-cavity is connected to the second channel, and the first sub-cavity is connected to the second channel through the second sub-cavity.

3. The detachable earplug according to claim 2, characterized in that: A breathable mesh is provided on the bottom of the second sub-cavity at a position connected with the second channel.

4. The detachable earplug according to claim 1, characterized in that: A protrusion is provided at the bottom of the second shell, and the second channel is a second through hole in the protrusion.

5. The detachable earplug according to claim 4, characterized in that: The first shell includes a sound outlet and a casing; the first opening is located at the top of the casing, and the bottom of the casing is also provided with a second opening connected to the first opening; the top of the sound outlet is sealed and clamped with the second opening of the casing, and the first channel is a first through hole in the sound outlet.

6. The detachable earplug according to claim 5, characterized in that: The protrusion is formed by coaxially connecting a first sub-protrusion and a second sub-protrusion in a direction from top to bottom, and the size of the first sub-protrusion is larger than that of the second sub-protrusion; The first through hole is formed by sequentially connecting a first sub-through hole, a second sub-through hole, and a third sub-through hole in a direction from top to bottom, and the apertures of the first sub-through hole, the second sub-through hole, and the third sub-through hole decrease in sequence; The third sub-through hole is connected to the second through hole; The first sub-through hole and the first sub-protrusion are in transitional cooperation; The second sub-through hole and the second sub-protrusion are clearance-fitted; a groove is provided on the outer wall of the connection between the second sub-protrusion and the first sub-protrusion, a sealing ring is provided in the groove, and the sealing ring and the second sub-through hole are interference-fitted.

7. The detachable earplug according to claim 5, characterized in that: The material of the casing is silica gel.

8. The detachable earplug according to claim 6, characterized in that: The material of the sealing ring is silicone.

Images