KR101801015B1 - Noise Reduction adjustment Hearing Protector - Google Patents

Abstract

The present invention relates to a hearing protector for noise reduction control. The hearing protector includes a bar body made of soft material to be inserted into an ear canal, a hearing protector including an annular shape formed on the outer periphery of the body, In this case,
A sound guide hole formed to penetrate the body in a longitudinal direction of the body; an end of the noise guide hole being fixedly fixed to the noise guide hole, wherein an insertion hole communicating with the noise guide hole is formed therein, And a plurality of acoustic filters which are inserted into the insertion holes of the adjustment body to close the insertion holes of the adjustment body to reduce noises, And one or more vents formed on the substrate.
It is possible to appropriately control the degree of noise reduction introduced into the user's ear through the body by appropriately controlling the degree of noise reduction in the body constituting the hearing protector in consideration of the use situation of the user, The external sound source is induced to be audible and can be effectively used at construction sites or military units where noise is frequently generated.
In addition, since the ventilation of the wearer is not completely closed due to the vent formed in the thin film, it is possible to prevent weariness of the wear due to the sealing of the ear canal and sound of the user's own voice, thereby providing convenience to the wearer.
In addition, the pair of hearing protec- tions are connected to each other through the connection means and the connection line, thereby providing convenience to the user for storing and managing the hearing protector, thereby minimizing the loss of the hearing protector.
In addition, the hearing protector can be connected to the control line and the length of the control line can be easily controlled by the reel holder, so that the user can easily retrieve and store the hearing protector by the operation of the reel holder, Not only can the contamination of the reel holder be effectively prevented, but also the reel holder can be easily attached to the user's helmets and the upper garment through the attachment means, thereby ensuring ease of use of the product.

Description

{Noise Reduction Adjustment Hearing Protector}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hearing protector for noise reduction control, and more particularly, The present invention relates to a hearing protection device for noise reduction control that can be effectively used in a construction site or a military unit where noise is frequently generated by inducing a user to listen to an external sound source required in the field while blocking external noise.

In general, earplugs are intended to protect the wearer's ear against external noise, and can be distinguished by earplugs for noise isolation, earplugs for winter, and earplugs for waterproofing in water.

Here, the ear plug for noise isolation (hereinafter referred to as "hearing protector") is used to prevent noise generated at a construction site such as a factory or a tunnel from entering the ear of a worker. A stopper, etc. are applied.

However, since the above-mentioned noise-isolating hearing protector blocks the ear of the wearer in order to block the noise, the wearer has to remove the hearing protector to listen to the external sound source in order to smoothly perform the operation besides the noise.

So that there is a problem in that the hearing protector for noise shielding can hardly be used at work sites due to inconvenience of the operation.

In addition, since the conventional hearing protector for blocking the noise shields the ear canal of the wearer, the wearer feels a sense of weariness due to inconvenience due to the sound of his / her voice when he / she wears for a long time.

In addition, since the conventional noise-isolating hearing protectors are separately stored and managed in pairs, there is a problem that frequent loss occurs in the process of storing and managing, which is somewhat inconvenient for storage and management.

In addition, when the conventional noise-isolating hearing protector is used in construction sites and military units where many dusts are generated, the hearing protector is easily contaminated in the process of detaching, storing, and managing the hearing protector with the hand exposed to the dust , And the use of such unsanitary hearing protectors has caused problems in the use of various diseases.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve all of the above problems, and it is an object of the present invention to provide a noise control means in a body constituting a hearing protector to reduce the degree of noise introduced into a user's ear through a body, (Noise reduction), but it can induce the external sound sources needed in the field to be audible. Therefore, it is possible to effectively use the noise suppression hearing protection which can be effectively used in construction sites or military units where noise is frequently generated. .

In addition, since the ventilation formed on the thin film does not completely close the wearer's ear canal, the wearer's tightness due to the sealing of the ear canal is prevented, and the noise of the wearer's ear can be reduced To provide protection.

The present invention also provides a hearing protector for noise reduction control, which can minimize the loss of the hearing protector by connecting the pair of hearing protector to each other through the connection means and the connection line, thereby providing the user with convenience of storing and managing the hearing protector.

In addition, the hearing protector can be connected to the control line and the length of the control line can be easily controlled by the reel holder, so that the user can easily retrieve and store the hearing protector by the operation of the reel holder, The present invention provides a hearing protection device for noise reduction control which can easily use the reel holder by attaching the reel holder to a user's safety cap .

According to an aspect of the present invention, there is provided a hearing protector for controlling noise reduction, the hearing protector including a bar body made of soft material to be inserted into an ear canal, and at least one thin film formed annularly on the outer periphery of the body, In a hearing aid,

A sound guide hole formed to penetrate the body in a longitudinal direction of the body; an end of the noise guide hole being fixedly fixed to the noise guide hole, wherein an insertion hole communicating with the noise guide hole is formed therein, And a plurality of acoustic filters which are inserted into the insertion holes of the adjustment body to close the insertion holes of the adjustment body to reduce noises, And one or more vents formed on the substrate,

Each of the acoustic filters has a different degree of noise reduction for reducing noise, so that any one of the acoustic filters selected by the user is inserted into the insertion hole of the adjustment body so as to reduce the noise as desired by the user .

In the acoustic filter, a cut-off groove having a predetermined diameter and a predetermined height may be formed, and the cut-out groove formed in each acoustic filter may have a different diameter or height or a different diameter and height, So that the degree of blockage is formed differently from each other.

Further, the present invention is further characterized in that the support is formed on the body so as to have a predetermined elasticity, and is supported by the support to be stably mounted on the inner side of the wearer's wrist when worn, thereby inducing stable position fixation of the body.

The other end of the hearing protector is connected to the support member formed on the body of the noise reduction control hearing protector, which is worn on the right ear, and the other end is connected to the support member formed on the body of the noise- And connecting means for connecting an end of the connecting line to the supporting base.

The connection means may include a spherical connection protrusion formed at an end of the connection line, and a connection hole formed in the support to penetrate the connection protrusion,

The connection protrusions are easily inserted into the connection holes so that the noise reduction mitigation hearing protectors on both sides are stably connected to each other by the connection string.

The connecting means may include a connecting groove formed in the support base and a connecting rod whose both ends are fixed to the inner surface of the connecting groove,

And an end of the connection string is coupled to the connection rod so that the noise reduction mitigation hearing protection ports of both sides are stably connected to each other by the connection string.

The reel holder may further include an adjustment line connected to the support, a reel holder for winding or loosening the other end of the adjustment line to adjust the length of the adjustment line, and attachment means for attaching the reel holder,

When the user pulls the support rod connected to the adjustment rod, the adjustment rod wound on the reel holder is loosened to increase the length of the adjustment rod. When the adjustment rod is wound through the operation of the reel holder, So that the support member connected to the control line is returned to the original position.

Further, the attaching means may include a male velcro fastened to the reel holder and a female velcro fastened to the object to be attached, and the male velcro formed on the reel holder is attached to the female hook- So that the reel holder is firmly fixed to the object.

In addition, by embodying a magnet or clip which is attached to the reel holder by the attachment means,

The reel holder can be easily attached and fixed to the metal object through the magnetic force of the magnet or the clip can be inserted into the wearer's clothes and the reel holder can be easily fixed.

Further, a wrinkle is further formed on the outer peripheral surface of the end of the body so that the end of the body, which is introduced into the wearer's ear canal,

The end of the body is easily bent in accordance with the bending of the inside of the external ear canal due to the wrinkles in the process of wearing the body with the wearer's ear, thereby providing convenience to the wearer.

In addition, the end of the body is formed to be inclined at 1 to 30 degrees.

As described above, according to the noise reduction control hearing protector according to the present invention, the noise control means is formed on the body constituting the hearing protector, and the degree of noise reduction introduced into the user's ear through the body is appropriately controlled And can be effectively used in a construction site or a military unit where noise is frequently generated by inducing an external sound source to be heard in the field while blocking external noise.

In addition, since the ventilation of the wearer is not completely closed due to the vent formed in the thin film, it is possible to prevent weariness of the wear due to the sealing of the ear canal and sound of the user's own voice, thereby providing convenience to the wearer.

In addition, the pair of hearing protec- tions are connected to each other through the connection means and the connection line, thereby providing convenience to the user for storing and managing the hearing protector, thereby minimizing the loss of the hearing protector.

In addition, the hearing protector can be connected to the control line and the length of the control line can be easily controlled by the reel holder, so that the user can easily retrieve and store the hearing protector by the operation of the reel holder, It is possible to effectively prevent the contamination of the reel holder, and the reel holder can be easily attached to the user's safety cap and upper clothes through the attaching means, thereby ensuring ease of use of the product.

1 is a perspective view of a noise-reducing hearing protector according to a first embodiment of the present invention;
Fig. 2 is a cross-sectional view of the noise-reducing hearing protection shown in Fig. 1
3 is an exploded perspective view of the noise-
4 is a perspective view of a noise-reducing hearing protection device according to a second embodiment of the present invention;
5 is a perspective view of a noise-reducing hearing protector according to a third embodiment of the present invention;
6 is a perspective view of a noise-reducing hearing protector according to a fourth embodiment of the present invention
FIG. 7 is a perspective view of a noise-reducing hearing protector according to a fifth embodiment of the present invention
8 is a perspective view of a noise-reducing hearing protector according to a sixth embodiment of the present invention
FIG. 9 is a view showing the state of use of the noise reduction control sound hole shown in FIG. 1
Fig. 10 is a view showing the state of use of the hearing protection for noise reduction shown in Fig.
Fig. 11 is a diagram showing the state of use of the hearing protection for noise reduction control shown in Fig. 6

A hearing protector for noise reduction control according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Detailed descriptions of well-known functions and constructions that may be unnecessarily obscured by the gist of the present invention will be omitted.

FIG. 1 is a perspective view of a noise-reducing hearing protection device according to a first embodiment of the present invention, and FIG. 2 is a perspective view of a noise- FIG. 3 is a perspective view of a hearing protector for noise reduction control shown in FIG. 1, FIG. 4 is a perspective view of a hearing protector for noise reduction control according to a second embodiment of the present invention, FIG. 5 is a perspective view of a hearing protector for noise reduction control according to a third embodiment of the present invention, FIG. 6 is a perspective view of a hearing protector for noise reduction control according to a fourth embodiment of the present invention, FIG. 8 is a perspective view of a noise-reducing hearing protector according to a sixth embodiment of the present invention, FIG. 9 is a perspective view of a noise-reducing hearing protector according to an embodiment of the present invention, The attitude, Figure 10 is a state diagram showing the use of the noise reduction for adjusting hearing protectors illustrated in the state diagram of the operating noise reduction adjustment hearing protection, Figure 11 is shown in Figure 4. Figure 6 respectively.

1 to 3, a noise-reducing hearing protector 100 according to an embodiment of the present invention includes a bar body 1 made of soft material to be inserted into an ear canal, A hearing protection device comprising at least one thin film (2) formed annularly on the outer periphery and brought into close contact with the ear canal,

Noise control means 10, and a vent 20.

The noise control means 10 includes a noise guide hole 11 penetrating in the longitudinal direction of the body 1 and one end fixedly fixed to the noise guide hole 11, An adjustment body 12 having an insertion hole 12a penetrating to communicate with the hole 11 and a lid 12b for determining opening and closing of the insertion hole 12a is formed at the other end, And a plurality of acoustic filters 13 inserted and fixed in the insertion holes 12a of the adjustment body 12 to close the insertion holes 12 of the adjustment body 12 to reduce noise.

That is, as shown in FIG. 9A, the user opens the lid 12b of the adjusting body 12 so that the noise can be reduced at the site where the noise is generated and the external sound source can be heard for smooth operation, One acoustic filter 13 for reducing noise is inserted and fixed inside the insertion hole 12a after the insertion hole 12a connected to communicate with the hole 11 is opened to suitably reduce the external noise Thereby inducing an external sound source to be heard smoothly.

In this case, the user uses the acoustic filter 13, which has a high level of noise isolation when the external noise level is high, in consideration of the noise level generated in the field, and when the noise level in the field is small, It is possible to freely select and use the acoustic filter 13 in accordance with the degree of noise of the site.

Accordingly, the user can selectively use the acoustic filter 13 having various degrees of noise reduction in the insertion hole 12a of the adjustment body 12 to reduce the noise as desired by the user in consideration of the noise level in the field do.

1 to 3, a cut-off groove 13a having a predetermined diameter D and a predetermined height H is formed in the acoustic filter 13, and each of the acoustic filters 13, The diameter D or the height H or the diameter D and the height H of the cut-off groove 13a are different from each other so that the degree of noise blocking is different .

That is, as the diameter D of the cut-off groove 13a is small and the height H is low, the degree of ability to cut off external noise is excellent, and the diameter D of the cut-off groove 13a is large, The user can selectively use the diameter D and the height H of the cut-off groove 13a formed in the acoustic filter 13 because the degree of blocking the external noise is lower as the height H of the acoustic filter 13 increases .

Here, the scientific design process of the acoustic filter 13 will be described.

Since hearing loss due to noise is mainly attributed to high-frequency signals, a frequency filter that attenuates high-frequency signals is required. That is, it is necessary to protect the auditory sense by attenuating the signal sharply from several hundred Hz as shown in [Figure 1] below.

[Figure 1] Characteristics of frequency filter for hearing protection

Such a high-frequency attenuating filter, that is, a low-pass filter, can be realized by connecting a plurality of pipes having different diameters as shown in [Fig. 2].

That is, when a sound wave propagates to a hollow drum, a discontinuity occurs at a portion where the diameter changes, so that a part of the sound wave is reflected and passes through the remaining one. At this time, the reflection ratio depends on the diameter, the material of the wall, and the frequency of the signal. When multiple bars are connected, there will be multiple such reflection surfaces, resulting in a double reflection phenomenon where the reflected sound from one side is reflected from the other side, which allows the reflection and transmission coefficients to change rapidly as a function of frequency .

[Figure 2] Implementation of a low-pass filter with a different diameter for different lengths. Example of a low-pass filter composed of three strands with diameters a ₁ , a ₂ and a ₃ and lengths L ₁ , L ₂ and L ₃

In order to analyze the reflection and transmission of sound in these sound waveguides, the impedance model as shown in [Figure 3] is used.

That is, the sound transmission characteristic in each single region is represented by a characteristic impedance Z _n ( n = 0, 1, 2, 3, 4). The inherent impedance Z _n

. Where ρ is the density of the medium, and v _s is the speed of sound.

In addition, Z ₀ is the intrinsic impedance of the outer atmosphere, and Z ₄ is the intrinsic impedance of the middle ear.

[Figure 3] Transmission-line model of low-pass filter

Where Z ₁ , Z ₂ and Z ₃ are the characteristic impedances of the waveguides whose diameters are a ₁ , a ₂ and a ₃ respectively, Z ₀ is the intrinsic impedance of the outer atmosphere, and Z ₄ is the middle ear ). ≪ / RTI >

The sound reflection coefficient at the interface between the external air and the frequency filter is

, Where Z _in is the impedance that encompasses both the frequency filter and the rest of it

Can be written as. Where k = 2 / = 2f / v _s and f is the frequency. Since the sound is not lost inside the drum, the permeability coefficient is

. In other words, the transmittance of the sound transmitted through the various barriers with different radii and materials is a function of the diameter, length and frequency of the barrel. By appropriately adjusting the diameter and length, it is possible to design a high-frequency attenuation filter, that is, a low-pass filter as shown in [Fig. 1].

Therefore, the design of the frequency filter is to determine the diameter and the length of each sound waveguide so that the frequency at which the attenuation starts to appear and the slope thereafter become a desired value. The above formula is very complicated and difficult to design. In practice, however, since the frequency filter must be small enough to be able to enter the earpiece , tan kL can be approximated to kL , and the effective design of the acoustic filter 13 is performed using the approximation.

As shown in FIGS. 1 to 3, the vent 20 is formed to pass through at least one of the thin films 2.

In other words, the conventional hearing protector closes the ear canal of the wearer when worn. Therefore, when the wearer wears the wearer for a long time, the wearer feels frustration (closure phenomenon), his / her voice rings, and most wearers feel very uncomfortable when worn for a long time. As shown in FIG. 9C, the noise suppression hearing protector 100 according to the present invention does not completely close the wearer's ear canal due to the vent 20 formed in the thin film 2, The present invention can prevent the phenomenon and provide the wearer with the convenience of wearing effectively.

The noise suppression hearing protector 100 according to the present invention is configured such that one vent 20 is formed in each thin film 2, but the present invention is not limited thereto.

As shown in FIGS. 1 to 3, the body 1 is formed on the body 1 and has a predetermined elasticity. When the body 1 is worn, the body 1 is brought into close contact with the inside of the ear of a wearer, And a support base (30)

9 (c), when the body 1 is inserted into the external ear canal of the user, the support 30 is internally fixed to the user's knob to firmly support and fix the body 1, In the course of using the hearing protector 100 for a long time, it is possible to stably prevent the body 1 from being gradually detached from the external ear canal due to factors such as shaking due to the user's activities, so that the function of the hearing protector can be stably maintained for a long time do.

Here, the support base 30 is preferably made of a material having elasticity so as to be easily fixed to the user's wheels, thereby providing convenience of wearing.

4, one end is connected to the supporter 30 formed on the body 1 of the noise-reducing hearing protector 100 of the present invention, which is worn on the left ear, and the other end is worn on the right ear A connection line 41 connected to the support 30 formed on the body 1 of the noise reduction control hearing aid 100 according to the present invention and a connection line 41 connecting the end of the connection line 41 to the support 30 Further comprising a connecting means (42)

10, a pair of hearing protector 100 for noise reduction control according to the present invention can be easily connected to each other through the connection line 41 and the connection means 42, so that the noise- 100), it is possible to minimize the loss of the hearing protector.

4, the connecting means 42 includes a spherical connecting protrusion 42a formed at the end of the connecting rod 41 and a connecting protrusion 42a formed through the connecting protrusion 42 The connecting protrusions 42a can be easily inserted into the connecting holes 42b so that the connecting rods 42b can be easily connected to the connecting rods 42b by the connecting rods 41, The protective members 100 may be stably connected to each other,

A connection groove 42c formed in the support base 30 and a connection rod 42d having both ends thereof fixed to the inner surface of the connection groove 42c, May be bound to the connecting rod 42d so that both of the hearing protections 100 for noise reduction control according to the present invention can be stably connected to each other by the connecting line 41. However, Of course not.

6, one end is connected to the support 30 and the other end of the adjustment line 51 is wound or loosened to adjust the length of the adjustment line 51 It is preferable to provide the user with ease of use of the noise reduction control hearing aid 100 according to the present invention by further including a reel holder 52 and attachment means 53 for attaching the reel holder 52. [

11A, the user may attach the object 3 to the hearing protector 100 for the noise reduction control according to the present invention, for example, a helmet used at the construction site, The reel holder 52 can be easily attached to the reel holder 52 to fix the position of the noise reduction controlling hearing protector 100 according to the present invention through the adjustment cord 51 fixed to the reel holder 52,

11B, when the hearing protector 100 according to the present invention is required to be used, the support bar 30 attached to the adjustment bar 51 is pulled from the reel holder 52, The body 1 is inserted into the ear and the ear canal of the user's ear together with the supporter 30 bound to the adjustment line 51 and is easily worn.

Then, if it is desired to release the wearer's hearing protection device 100 for noise reduction control, as shown in FIG. 11C, the body 1 can be easily removed from the user's ear together with the support 30, The holder 52 is actuated to cause the adjustment string 52 unwrapped in the reel holder 52 to be wound back so that the body 1 together with the adjustment strap 52, It is easily recovered and stored.

Here, the reel holder 52 uses a reel holder, which is typically used to unwind the string, so that a detailed description thereof will be omitted.

That is, it is possible to minimize the contact between the support 30 and the body of the user by easily minimizing the contact between the support 30 and the body of the user during the process of collecting and storing the support 30 and the body 1, thereby effectively preventing contamination of the support 30 and the body 1, The support base 30 and the body 1 can be automatically retrieved and stored through the reel holder 52, thereby providing convenience to the user.

6, the attachment means 53 includes a male velcro 53a coupled to the reel holder 52 and a female hook-and-loop fastener 53b coupled to the object 3 to be attached Respectively,

11a, the male velcro 53a formed on the reel holder 52 is attached to the female velcro 53b coupled to the article 3 so that the reel holder 52 is attached to the article (3).

7 and 8, a magnet 53c or a clip 53d (not shown) attached to the reel holder 52 in place of the male and female velcro 53a and 53b is attached to the attachment means 53, ), ≪ / RTI >

7, when the attachment means 53 is embodied as a magnet 53c, the reel holder 52 is attached to a metal object 3 which can be easily attached through the magnetic force of the magnet 53c When the attachment means 53 is embodied as a clip 53d as shown in FIG. 8, the article 3 which can be easily attached to the clip 53d, for example, It is preferable to use the clip holder 53d with the reel holder 52 attached thereto.

1 to 3, a corrugation 60 is further formed on the outer peripheral surface of the end of the body 1 so that the end of the body 1, which is introduced into the wearer's ear canal,

As shown in FIG. 9B, in the process of wearing the body 1 with the wearer's ear, the end of the body 1 is easily bent to fit the bending of the inside of the external ear canal due to the wrinkle 60 It is desirable to provide the wearer with the convenience of wearing.

As shown in FIG. 2, the end of the body 1 is inclined at 1 to 30 degrees in consideration of the curvature of the external ear canal, It is preferable that the end of the body 1 is stably seated on the ear canal having a predetermined curvature to provide comfort to the wearer.

The noise reduction control hearing protector 100 according to the present invention having the above-described components includes the noise control means 10 formed on the body 1 as the hearing protection protector, (Noise reduction) can be appropriately controlled by the user considering the situation of the use site, so that the external noise can be cut off (reduced) There is an effect that can be effectively used in military units.

In addition, since the ventilation opening 20 formed in the thin film 2 does not completely close the wearer's external ear canal, the wearer's tightness of wear caused by the sealing of the ear canal when the conventional hearing protector is worn, There is an effect that the wearer can be provided with convenience of wearing.

In addition, a pair of the noise reduction controlling hearing protector 100 according to the present invention is connected to the connecting means 42 through the connecting line 41 to provide the user with convenience of storing and managing the hearing protector, There is an effect that can be minimized.

The hearing protector 100 according to the present invention can be connected to the adjustment strap 51 and the length of the adjustment strap 51 can be easily controlled by the reel holder 52, The recovery and storage of the support table 30 and the body 1 can be easily performed by the operation of the reel holder 52 so that contamination of the support table 2 and the body 1 can be effectively prevented, The reel holder 52 can be easily attached to the user's safety helmet or upper clothes through the attaching means 53, thereby ensuring ease of use of the product.

The hearing protector 100 for noise reduction control according to an embodiment of the present invention having the above-described configuration is used as follows.

First, as shown in FIG. 9A, when it is necessary to reduce the noise appropriately in consideration of the noise situation before wearing the hearing protector 100 for noise reduction control according to the present invention, The lid 12b of the adjustment body 12 is opened to open the insertion hole 12a of the adjustment body 12 connected to communicate with the noise guide hole 11 and then the noise is reduced into the insertion hole 12a One acoustic filter 13 is selected and inserted and fixed in the insertion hole 12a.

At this time, the user selects an appropriate acoustic filter 13 among a plurality of the acoustic filters 13 having different degrees of noise reduction in consideration of the surrounding noise situation. Here, It is desirable to provide the noise reduction capability in numerical value.

Accordingly, the user can reduce the noise generated in the field through the acoustic filter 13, and maintain the state where the external sound source is audible, so that the user can perform a smooth operation for a long time on the site where noise is generated.

9B, in the course of wearing the hearing protector 100 for noise reduction control according to the present invention, the corrugations 60 formed at the end of the body 1 may cause the body 60 to be deformed, The user can easily wear the body 1 because the end of the body 1 is easily bent. When the body 1 is inserted into the ear canal, a slope &thetas; The body 1 can be stably placed on the external ear canal.

As shown in FIG. 9C, when the hearing protector 100 for noise reduction control according to the present invention is worn, the support base 30 is seated and fixed on the wearer's wheel so that the position of the body 1 is fixed, The adjustable hearing protector 100 can be stably used for a long time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. You will understand the point. It goes without saying that variations can be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the scope of claim of the present invention is not limited within the scope of the detailed description, but will be defined by the following claims and technical ideas thereof.

1. Body 2. Thin film
3. Things
10. Noise control means 11. Noise guide ball
12. Adjustable body 12a. Insert ball
12b. Cover 13. Acoustic filter
13a. Blocking Holes 20. Bent
30. Supports 41. Connecting Lines
42. Connection means 42a. Connecting projection
42b. Connection ball 42c. Connection groove
42d. Connecting rod 51. Arrangement
52. Reel holder 53. Attachment means
53a. Male Velcro 53b. Female Velcro
53c. Magnet 53d. Clip
60. Wrinkles
θ. Slope D. Diameter
H. Height
100. Noise Reduction Hearing Protection

Claims (11)

1. A hearing protector comprising a rod-like body (1) made of a soft material to be inserted into an ear canal and at least one thin film (2) annularly formed on the outer periphery of the body (1)
A noise guide hole 11 formed in the longitudinal direction of the body 1,
An insertion hole 12a through which the noise guide hole 11 is communicatively connected is formed at one end of the insertion hole 12a and the opening and closing of the insertion hole 12a is formed at the other end thereof. An adjusting body 12 on which a lid 12b for determining is formed,
And a plurality of acoustic filters 13 inserted and fixed to the insertion holes 12a of the adjustment body 12 to close the insertion holes 12 of the adjustment body 12 to reduce noise. ); And
And at least one vent (20: Vent) formed through the thin film (2)
Each of the acoustic filters 13 has a different degree of noise reduction for reducing noise so that any one of the acoustic filters 13 selected by the user is inserted into the insertion hole 12a of the adjustment body 12 So as to reduce the noise as much as the user desires,
A corrugation 60 is further formed on the outer peripheral surface of the end of the body 1 so that the end of the body 1, which is introduced into the wearer's ear canal,
The end of the body 1 is easily bent to suit the bending of the inside of the external ear canal due to the wrinkles 60 in the process of wearing the body 1 with the wearer's ear, (100).
delete The method according to claim 1,
And a supporting base 30 formed on the body 1 and having a predetermined elasticity and being closely attached to the inner side of the ear of the wearer when worn to induce stable position fixation of the body 1,
A reel holder 52 for winding or loosening the other end of the regulating bar 51 to regulate the length of the regulating bar 51, And an attachment means (53) for attaching the holder (52)
When the user pulls the supporter 30 connected to the regulator 51, the regulator 51 wound on the reel holder 52 is loosened to increase the length of the regulator 51, The length of the adjustment rods 51 is reduced and the support rods 30 connected to the adjustment rods 51 are returned to their original positions by winding the adjustment rods 51 through the operation of the control rods 52. [ Noise reduction control hearing protector (100).
delete delete delete delete The method of claim 3,
The attachment means (53)
A male velcro 53a coupled to the reel holder 52,
And a female hook-and-loop fastener 53b fastened to the object 3 to be attached,
The reel holder 52 is secured to the article 3 by attaching the male velcro 53a formed on the reel holder 52 to the female velcro 53b coupled to the article 3 (100) for controlling noise reduction.
The method of claim 3,
A magnet 53c or a clip 53d attached to the reel holder 52 by the attachment means 53,
The reel holder 52 can be easily fixedly attached to the metal object 3 through the magnetic force of the magnet 53c or the clip 53d can be inserted into the wearer's clothes and the reel holder 52 can be easily fixed (100) for controlling noise reduction.
delete delete

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