CN111568643A - Sound insulation earplug with cold compress effect - Google Patents

Abstract

The invention discloses a sound-insulating earplug with a cold compress effect, comprising a shell and a fixing layer, wherein a metal rod is penetrated through the shell, a heat-shrinkable layer is connected to the outer shell of the metal rod, and the shell is provided with a heat-shrinkable layer. A circular groove with matching sizes, a piezoelectric sheet is glued on the side of the casing close to the fixed layer, the piezoelectric sheet is in contact with the heat shrinkable layer, and an air cavity is annularly opened on the outer side of the casing. The outside is sealed and connected with a buffer layer, the air cavity is communicated with an air intake channel, and the air intake channel is connected with an air cylinder. The advantages are: the present invention realizes the expansion of the buffer layer by inflating the air cavity to adapt to the diameter of the ear canal of different people, and when the ear is heated, the air is released through the opening of the heated mesh of the intelligent polymer gel material. , and cool down the ear canal to avoid the problem of ear canal damage caused by prolonged use.

Description

A kind of sound insulation earplug with cold compress effect

technical field

The present invention relates to the field of earplugs, in particular to a sound insulation earplug with a cold compress effect.

Background technique

Noise-isolating earplugs (also known as anti-noise earplugs, sound-isolating earplugs, anti-noise earplugs, sleep earplugs) are generally made of silicone or low-pressure foam material and high-elasticity polyester material. After being inserted into the ear canal, it is in close contact with the external auditory canal to isolate the sound from entering the middle ear and inner ear (ear drum), so as to achieve the purpose of sound insulation, so that people can get a quiet rest or work and study environment.

However, in the prior art, on the one hand, due to the fixed size, the sound-isolating earplugs cannot fit the ear canal of each person, which may easily cause damage to the ear canal or poor sound insulation effect, and use the earplugs for a long time will cause redness and swelling in the ear canal. Itching and heat will also cause the inside of the ear canal to become moist due to the lack of air circulation, and the secretion will increase. Based on this, the present invention designs a sound insulation earplug with a cold compress effect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem in the prior art that long-term use of the plug will cause heat, redness and swelling of the ear canal, and it does not have the ability to adjust the size to meet the needs of different people, and proposes a sound insulation earplug with a cold compress effect.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a sound-insulating earplug with a cold compress effect, comprising an outer shell and a fixed layer, wherein a metal rod is penetrated through the outer shell, and the outer shell of the metal rod is connected with a heat shrinkable layer, so The outer casing is provided with a circular groove matching the size of the heat shrinkable layer, the side of the outer casing close to the fixed layer is glued with a piezoelectric sheet, the piezoelectric sheet is abutted against the heat shrinkable layer, and the outer side of the outer casing is annularly opened There is an air cavity, the air cavity is sealed with the outside and a buffer layer is connected, the air cavity is communicated with an air intake channel, and the air intake channel is connected with an air cylinder;

The air cylinder is composed of a push plate, a cylinder body and an air outlet, the air outlet is sealed with the air inlet channel, the metal rod is fixedly connected with a heat dissipation layer on one side outside the fixed layer, and an annular channel is opened in the outer casing , the annular channel is communicated with the circular groove and the part outside the casing is provided with a suction port;

The side of the buffer layer close to the fixed layer is provided with an air outlet, the air outlet is sealed and connected with an air film, the air film is made of intelligent polymer gel material, and the air cavity and the circular groove are located on the side close to the annular channel A return port is provided.

In the above sound insulation earplugs with cold compress effect, the metal rod is made of semiconductor material, the buffer layer is made of rubber material, and the piezoelectric sheet is electrically connected to both ends of the metal rod through wires.

Compared with the prior art, the advantages of the present invention are:

1. In the present invention, the air cavity can be inflated through the air cylinder structure, so as to realize the outward expansion of the buffer layer, and the diameter of the outer casing can be controlled by the amount of air intake, thereby adapting to the ear canals of different people and improving the scope of application;

2. When the earplug is in close contact with the ear canal for a long time, heat is generated at the ear canal due to the pressure, so that it is transmitted to the heat shrinkable layer through the buffer layer and the air cavity, and the heat shrinkable material has the characteristic of shrinking when heated, which will affect the metal rod. The piezoelectric sheet at the end is pressed against it, and the higher the temperature of the ear canal, the greater the degree of thermal shrinkage, and the greater the current generated by the compression of the piezoelectric sheet;

3. The two ends of the piezoelectric sheet are electrically connected to both ends of the metal rod through wires. Under the action of the Thomson effect, since the two ends of the metal rod are connected to the outside world and the inside of the ear canal respectively, there is a temperature difference between the two. When the conductor is energized At the time, the two ends of the metal rod will release heat and absorb heat respectively. The end connected to the ear canal is controlled as the heat absorption end, and the end connected with the outside world is the heat dissipation end, so the end of the metal rod will absorb heat to the earplugs. Thereby, the temperature of the earplugs drops, resulting in a cooling effect on the ear canal;

4. At the same time, the air film of the smart polymer gel material opens its own mesh structure at a high temperature, so that the gas can flow. At this time, because the air cavity is in a state of inflation and expansion, after the air film is opened, the gas will pass through The air film flows out, which reduces the diameter of the shell, reduces the pressure on the ear canal, and avoids damage to the ear canal;

5. And when the heat shrinkable material shrinks, the connection between the air cavity and the return port will be opened. When the gas flows out of the air film, the flow rate at the return port will increase, making it have a negative pressure, and the secretions generated at the eardrum will be removed. It is sucked into the annular channel to achieve the cleaning effect on the ear. At the same time, the return port is connected with the metal rod, so that the metal rod and the gas in the air cavity conduct direct heat transfer, cooling and the temperature of the air blown out is lower, which improves the cooling effect. Effect.

Description of drawings

1 is a schematic structural diagram of a sound-insulating earplug with a cold compress effect proposed by the present invention;

FIG. 2 is an enlarged schematic view of part A of a sound insulation earplug with a cold compress effect proposed by the present invention.

In the picture: 1 shell, 2 fixed layer, 3 metal rod, 4 heat shrinkable layer, 5 piezoelectric sheet, 6 air cavity, 7 buffer layer, 8 air inlet channel, 9 air cylinder, 91 valve stem, 92 cylinder body, 93 outlet Air port, 10 heat dissipation layer, 11 annular channel, 12 air film, 13 return port.

Detailed ways

The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

Example

1-2, a kind of sound insulation earplugs with cold compress effect, including a shell 1 and a fixed layer 2, the shell 1 is provided with a metal rod 3, the metal rod 3 is covered with a heat shrinkable layer 4, and the shell 1 is provided with a The heat-shrinkable layer 4 is a circular groove with a matching size. The side of the casing 1 close to the fixed layer 2 is glued with a piezoelectric sheet 5, and the piezoelectric sheet 5 is in contact with the heat-shrinkable layer 4. The outer side of the casing 1 is provided with an annular air cavity 6. The air cavity 6 is sealedly connected with the outside world with a buffer layer 7, the air cavity 6 is connected with an air intake channel 8, and the air intake channel 8 is connected with an air cylinder 9;

The gas cylinder 9 is composed of a valve stem 91, a cylinder body 92 and an air outlet 93. The gas enters the cylinder body 92 from the outside, and the gas can be input into the air cavity 6 under the action of the two one-way valves of the cylinder body 92 and the air outlet 93. , to realize the expansion of the shell 1, so as to fit the ears of different people, the air outlet 93 is sealed with the air inlet channel 8, the metal rod 3 is fixedly connected with the heat dissipation layer 10 on the side outside the fixed layer 2, and the shell 1 is provided with a ring Channel 11, the annular channel 11 communicates with the circular groove and is provided with a suction port on the part outside the casing 1, the buffer layer 7 is provided with an air outlet on the side close to the fixed layer 2, and the air outlet is sealed and connected with an air film 12, and the air film 12 The intelligent polymer gel material is used, which has the characteristics of high temperature and air permeability.

The metal rod 3 is made of semiconductor material, and the electric heat generated is negligible due to the low resistance during conduction. The buffer layer 7 is made of rubber material, so that the buffer layer 7 is expanded when the air cavity 6 is inflated, and the piezoelectric sheet 5 is connected with the wire through the wire. The two ends of the metal rod 3 are electrically connected, so that when there is a difference between the ear canal and the outside temperature, a thermoelectric phenomenon is generated by electrification, and one end absorbs heat while the other end releases heat.

When the present invention is in use, the expansion degree in the air cavity 6 is controlled by the air cylinder 9, so as to be used with the ear canal of the corresponding size. The shrinkable layer shrinks itself under the condition of heat, which makes the piezoelectric sheet 5 at the end generate pressure and conducts both ends of the metal rod 3. Since the two ends of the metal rod 3 are located in the ear and outside the ear respectively, the temperature is different, according to the Thomson effect. , the metal rod 3 will release heat at one end and absorb heat at the other end when conducting electricity, and the heat absorption at one end of the ear canal will make the temperature of the earplug drop, thereby cooling the ear canal;

At the same time, the shrinkage of the heat-shrinkable material will release the sealing of the return port 13, so that the return port 13 is communicated with the air cavity 6, and the air film of the smart polymer gel material opens its own mesh under heating, which has a ventilation effect. , so that under the action of the expanding air pressure in the air cavity 6, the gas in the air cavity 6 moves to the direction of the air film 12. During this process, a negative pressure will be generated at the return port due to the gas circulation, so that the negative pressure is output to the outside through the annular channel 11. pressure, so that the secretions in the ear are adsorbed, which has the effect of cleaning the ear, and the gas is subjected to the heat exchange effect of the heat-absorbing end of the metal rod 3 when it flows, so that the temperature of the gas flowing out of the ear canal is reduced, and the air temperature at the ear canal is improved. The cold compress effect, and the diameter of the buffer layer is reduced, which reduces the pressure on the ear canal, protects the ear, and avoids damage.

Although the shell 1, the fixed layer 2, the metal rod 3, the heat shrinkable layer 4, the piezoelectric sheet 5, the air cavity 6, the buffer layer 7, the air inlet channel 8, the air cylinder 9, the valve stem 91, the cylinder body are used more in this paper 92, air outlet 93, heat dissipation layer 10, annular channel 11, air film 12, return port 13 and other terms, but do not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; it is contrary to the spirit of the present invention to interpret them as any kind of additional limitation.

Claims (2)

1. A sound-insulating earplug with a cold compress effect, comprising a shell (1) and a fixed layer (2), characterized in that a metal rod (3) is provided through the shell (1), and the metal rod (3) A heat shrinkable layer (4) is attached to the outer shell, a circular groove matching the size of the heat shrinkable layer (4) is opened in the outer shell (1), and the side of the outer shell (1) close to the fixed layer (2) is glued A piezoelectric sheet (5) is provided, and the piezoelectric sheet (5) is in contact with the heat shrinkable layer (4). A buffer layer (7) is sealed and connected to the outside, the air cavity (6) is communicated with an air inlet passage (8), and the air inlet passage (8) is connected with an air cylinder (9); The air cylinder (9) is composed of a valve stem (91), a cylinder body (92) and an air outlet (93), the air outlet (93) is sealedly connected with the air inlet passage (8), and the metal rod (3) A heat dissipation layer (10) is fixedly connected to the outer side of the fixed layer (2), an annular channel (11) is opened in the outer casing (1), the annular channel (11) communicates with the circular groove and is connected to the outer casing (1). ) is provided with a suction port; The side of the buffer layer (7) close to the fixed layer (2) is provided with an air outlet, the air outlet is sealed and connected with an air film (12), and the air film (12) is made of an intelligent polymer gel material, so The air cavity (6) and the circular groove are located on one side close to the annular channel (11) and are provided with a return port (13). 2. A sound-insulating earplug with cold compress effect according to claim 1, characterized in that, the metal rod (3) is made of semiconductor material, the buffer layer (7) is made of rubber material, and the piezoelectric sheet ( 5) It is electrically connected to both ends of the metal rod (3) through wires.

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