KR20170006800A - Noise Reduction adjustment Hearing Protector - Google Patents

Noise Reduction adjustment Hearing Protector Download PDF

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Publication number
KR20170006800A
KR20170006800A KR1020150097993A KR20150097993A KR20170006800A KR 20170006800 A KR20170006800 A KR 20170006800A KR 1020150097993 A KR1020150097993 A KR 1020150097993A KR 20150097993 A KR20150097993 A KR 20150097993A KR 20170006800 A KR20170006800 A KR 20170006800A
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South Korea
Prior art keywords
noise
reel holder
hearing protector
noise reduction
hearing
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KR1020150097993A
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Korean (ko)
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KR101801014B1 (en
Inventor
남영환
구호림
김영민
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남영환
김영민
구호림
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Publication of KR20170006800A publication Critical patent/KR20170006800A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/08—Protective devices for the ears internal, e.g. earplugs

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

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 a thin film formed annularly 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 arranged in the insertion holes of the adjustment body to close the insertion holes of the adjustment body to reduce noises. As a result,
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, 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 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. .

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, ,

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, 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, the noise-reducing hearing protector 100 according to the embodiment of the present invention includes a bar body 1 made of soft material to be inserted into the 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,

A noise guide hole 11 formed to penetrate the body 1 in a longitudinal direction thereof and one end being fixedly fixed to the noise guide hole 11 so as to communicate with the noise guide hole 11, And a lid 12b for determining the opening and closing of the insertion hole 12a is formed at the other end of the insertion hole 12a of the adjustment body 12, And noise adjusting means 10 composed of a plurality of acoustic filters 13 which are inserted and fixed to close the insertion holes 12 of the adjusting body 12 to reduce noises.

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

Figure pat00001

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

Figure pat00002

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

Figure pat00003

. 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

Figure pat00004

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

Figure pat00005

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

Figure pat00006

Figure pat00007

Figure pat00008

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

Figure pat00009

. 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 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 (20)

9 (c), when the body 1 is inserted into the external ear canal of the user, the support 20 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 20 is preferably made of a material having elasticity so that the support base 20 can be easily fixed to the user's wheel.

4, one end is connected to the support 20 formed on the body 1 of the noise reduction control hearing aid 100 according to the present invention, which is worn on the left ear, and the other end is worn on the right ear A connection line 31 connected to the support 20 formed on the body 1 of the noise reduction control hearing aid 100 according to the present invention and a connection line 31 connecting the end of the connection line 31 to the support 20 Further comprising a connecting means (32)

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 31 and the connection means 32, so that the noise- 100), it is possible to minimize the loss of the hearing protector.

4, the connecting means 32 includes a spherical connecting protrusion 32a formed at the end of the connecting rod 31 and a connecting protrusion 32a formed through the connecting protrusion 32 The coupling protrusions 32a are inserted into the coupling holes 32b so that the coupling protrusions 32a can be easily inserted into the connecting holes 32b by the connecting rods 31, The protective members 100 may be stably connected to each other,

A connection groove 32c formed in the support 20 and a connection rod 32d having both ends fixedly coupled to the inner surface of the connection groove 32c, May be connected to the connecting rod 32d so that both of the hearing protectors 100 for noise reduction control according to the present invention can be stably connected to each other by the connecting line 31. However, Of course not.

6, one end is connected to the support 20 and the other end of the adjustment line 41 is wound or loosened to adjust the length of the adjustment line 41 It is preferable to provide the user with ease of use of the noise reduction controlling hearing protector 100 of the present invention by further including a reel holder 42 and attaching means 43 for attaching the reel holder 42. [

That is, as shown in FIG. 11A, the user may attach the article 3 to the article 3, for example, a helmet used at a construction site, at a position where the noise reduction control hearing aid 100 according to the present invention can be easily used, The reel holder 42 is easily attached to the reel holder 42 to fix the position of the noise reduction controlling hearing protector 100 according to the present invention through the adjustment rope 41 bound to the reel holder 42,

11B, when the hearing protector 100 according to the present invention is required to be used, the support 20 attached to the adjustment strap 41 is pulled from the reel holder 42, The body 1 is inserted into the ear and the ear canal of the user's ear together with the support 20 attached to the adjustable string 41 and is easily worn.

Then, if it is desired to release the wearer's hearing protection 100 for noise reduction control, the body 1 is easily withdrawn from the user's ear together with the support 20 as shown in FIG. 11C, The holder 42 is actuated to cause the adjustment string 42 unwrapped in the reel holder 42 to be wound and returned and the body 1 together with the adjustment strap 42, It is easily recovered and stored.

Here, the reel holder 42 typically uses a reel holder used for unwinding the string, so that a detailed description thereof will be omitted.

That is, it is possible to effectively prevent contamination of the supporter 20 and the body 1 by minimizing contact between the supporter 20 and the body of the user while easily recovering and storing the supporter 20 and the body 1, The support base 20 and the body 1 can be automatically retrieved and stored through the reel holder 42, thereby providing the user with ease of use.

6, the attachment means 43 includes a male velcro 43a coupled to the reel holder 42 and a female hook-and-loop fastener 43b coupled to the object 3 to be attached Respectively,

11A, the male velcro 43a formed on the reel holder 42 is attached to the female velcro 43b coupled to the article 3 so that the reel holder 42 is attached to the article (3).

7 and 8, a magnet 43c or a clip 43d attached to the reel holder 42 in place of the male and female velcro 43a and 43b is attached to the attachment means 43, ), ≪ / RTI >

7, when the attachment means 43 is embodied as a magnet 43c, the reel holder 42 is attached to a metal object 3 which can be easily attached through the magnetic force of the magnet 43c And when the attachment means 43 is embodied as a clip 43d as shown in FIG. 8, the article 3 which can be easily attached to the clip 43d, for example, the upper garment of the wearer, It is preferable to attach the reel holder 42 with the clip 43d interposed therebetween.

1 to 3, a wrinkle 50 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 50 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, a pair of the noise reduction controlling hearing protector 100 according to the present invention is connected to the connecting means 32 through the connecting line 31 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 may be connected to the adjustment strap 41 so that the length of the adjustment strap 41 can be easily controlled by the reel holder 42, The recovery and storage of the support table 20 and the body 1 can be easily performed by the operation of the reel holder 42 so that contamination of the support table 2 and the body 1 can be effectively prevented, The reel holder 42 can be easily attached to the user's safety helmets or upper clothes through the attaching means 43 so that the usability of the product can be secured.

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 process of wearing the hearing protector 100 for noise reduction control according to the present invention, the wrinkles 50 formed at the end of the body 1 may cause the body 100 to bend, 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.

9C, when the wearer's hearing protector 100 according to the present invention is worn, the support base 20 is seated and fixed to 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 groove 20. Support
31. Connecting line 32. Connecting means
32a. Connecting protrusion 32b. Connecting ball
32c. The connection groove 32d. Connecting rod
41. Arrangement 42. Reel holder
43. Attachment means 43a. Male Velcro
43b. Female Velcro 43c. magnet
43d. Clip 50. 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. ), ≪ / RTI >
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 that the user can reduce the noise as much as the user desires.
The method according to claim 1,
A cut-off groove 13a having a predetermined diameter D and a predetermined height H is formed in the acoustic filter 13,
The cut-off groove 13a formed in each of the acoustic filters 13 has a diameter D or a height H or a diameter D and a height H different from each other, And the degree of noise shielding is formed to be different from that of the hearing protector (100).
The method according to claim 1,
And a support base 20 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 (100) for controlling noise reduction.
The method of claim 3,
The other end of the hearing protector 100 is connected to the support 20 formed on the body 1 of the noise reduction control hearing protector 100 to be worn on the left ear, (31) connected to the support (20) formed on the support (1)
And a connecting means (32) connecting the end of the connecting line (31) to the support base (20).
5. The method of claim 4,
The connecting means (32)
A spherical coupling protrusion 32a formed at an end of the connecting rod 31,
And a connection hole (32b) formed in the support base (20) so as to be grooved or penetrated so that the connection projection (32a)
The connection protrusion 32a is easily inserted into the connection hole 32b so that the noise reduction mitigating hearing protection device 100 can be stably connected to each other by the connection string 31. [ Hearing protection (100).
5. The method of claim 4,
The connecting means (32)
A connection groove 32c formed in the support base 20,
And a connecting rod 32d whose both ends are fixedly coupled to the inner surface of the connecting groove 32c,
The end of the connecting line 31 is bound to the connecting rod 32d so that the connecting member 31 can stably connect the two noise controllable hearing protections 100 to each other. (100).
The method of claim 3,
One end of which is connected to the support 20,
A reel holder 42 for winding or loosening the other end of the adjusting strap 41 to adjust the length of the adjusting strap 41,
And an attachment means (43) for attaching the reel holder (42)
When the user pulls the support 20 connected to the adjustment rope 41, the adjustment rope 41 wrapped around the reel holder 42 is loosened and the length of the adjustment rope 41 is increased,
The length of the adjusting strap 41 is reduced by winding the adjusting strap 41 through the operation of the reel holder 42 so that the supporting strap 20 connected to the adjusting strap 41 is returned to the original position (100) for controlling noise reduction.
8. The method of claim 7,
The attachment means (43)
A male velcro 43a coupled to the reel holder 42,
And a female hook-and-loop fastener 43b which is fastened to the object 3 to be attached,
The reel holder 42 is fixedly attached to the object 3 by attaching the male velcro 43a formed on the reel holder 42 to the female velcro 43b coupled to the object 3 (100) for controlling noise reduction.
8. The method of claim 7,
A magnet 43c or a clip 43d attached to the reel holder 42 by the attachment means 43,
The reel holder 42 can be easily attached or fixed to the metal object 3 through the magnetic force of the magnet 43c or the reel holder 42 can be easily fixed by fitting the clip 43d into the wearer's clothes (100) for controlling noise reduction.
The method according to claim 1,
A wrinkle 50 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 in accordance with the bending of the inside of the external ear canal due to the wrinkle 50 in the process of wearing the body 1 with the wearer's ear, (100).
The method according to claim 1,
Wherein the end of the body (1) is formed to be inclined (?) By 1 to 30 degrees.
KR1020150097993A 2015-07-09 2015-07-09 Noise Reduction adjustment Hearing Protector KR101801014B1 (en)

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KR102111668B1 (en) * 2020-02-13 2020-05-15 주식회사 아즈라 ear plug
KR20210106249A (en) * 2020-02-20 2021-08-30 주식회사 지아이엘 Earplugs and Earphones with Earplugs
KR20210106250A (en) * 2020-02-20 2021-08-30 주식회사 지아이엘 Earplugs and earphones with earplugs

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US9814625B2 (en) * 2013-01-04 2017-11-14 3M Innovative Properties Company Selective attenuating earplug

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KR102111668B1 (en) * 2020-02-13 2020-05-15 주식회사 아즈라 ear plug
JP2021126497A (en) * 2020-02-13 2021-09-02 アズラ インコーポレイテッドAzla Inc. Ear plug
KR20210106249A (en) * 2020-02-20 2021-08-30 주식회사 지아이엘 Earplugs and Earphones with Earplugs
KR20210106250A (en) * 2020-02-20 2021-08-30 주식회사 지아이엘 Earplugs and earphones with earplugs

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