KR20160112383A

KR20160112383A - Interlayer noise prevention assembly

Info

Publication number: KR20160112383A
Application number: KR1020150038043A
Authority: KR
Inventors: 김세형; 조병제
Original assignee: 김세형; 조병제
Priority date: 2015-03-19
Filing date: 2015-03-19
Publication date: 2016-09-28

Abstract

Disclosed is an interlayer noise prevention assembly. According to an embodiment of the present invention, an interlayer noise prevention assembly comprises: a buffer part having a body part formed with an opening part, which is arranged along a floor slab of a building, and a contact part, which protrudes from a bottom end of the body part and maintains a contact state with the floor slab; and an inducement part inducing low frequency noises passing through the buffer part into a room.

Description

[0001] Interlayer noise prevention assembly [0002]

The present invention relates to an interlayer noise prevention assembly for reducing interlayer noise due to an impact generated on a floor surface of a building, and more particularly, to an interlayer noise prevention assembly.

In general, the impact sound applied to the building structure of apartment houses or villas is transmitted to the four sides of the building due to the impact of the person's walking, opening and closing of the door, moving of the equipment, Thereby causing the surface of the building structure to vibrate, as well as being converted into an air transmission sound, which is perceived as noise when it is heard by people around the ear.

For example, a shock such as a drop of an object is applied to the floor or a sound of moving a chair generates a solid sound, which is transmitted to the adjacent rooms through the floor slab and the wall, It is called interstory noise that is transmitted to the lower layer through.

Nowadays, as the problem of floor noise becomes serious in apartment houses, regulations on housing construction standards have been strengthened and revised.

The above rule stipulates that the floor impact sound between each floor should be less than a specific decibel (dB) for a light impact sound and a standard floor structure not exceeding a specific decibel (dB) or declared by the Minister of Construction and Transportation.

In the conventional interlayer floor structure, a lightweight foamed concrete layer is formed on the basis of a concrete slab, and a lightweight foamed concrete layer is formed on the upper side of the concrete slab. The heating pipe and the mortar layer are formed on the upper part, and a floor decoration layer made of a decorative material such as monolith, wood, and tile is formed thereon.

The interlayer bottom structure having the above structure is responsible for attenuating impact noise or noise by the lightweight foamed concrete layer formed on the concrete slab, but the effect is insignificant.

In order to prevent noise or shock more effectively, a construction method of forming an interlayer impact sound damping material between the concrete slab and lightweight foamed concrete is disclosed.

Korean Patent Publication No. 10-2013-0094040 (published on August 23, 2013)

Embodiments of the present invention prevent low-frequency noise due to an impact generated in an indoor area from being transmitted to a lower layer or a neighboring layer, and after attenuating low-frequency noise to the maximum, .

According to an aspect of the present invention, there is provided a shock absorber comprising: a body portion formed along a bottom slab of a building and having an opening through which noise flows; a buffer portion protruding from a lower end of the body portion and including a contact portion held in contact with the bottom slab; And an induction unit for inducing the low-frequency noise passed through the buffer to the room.

The opening portion being formed on an upper surface of the body portion and extending downward; And a passage extended from the inlet toward the lower side of the body portion in all directions.

And a plurality of the inflow ports are spaced apart from each other at a predetermined interval on the upper surface of the buffer part.

And the passage extends in size toward the outer end.

And the length of the passageway extending toward the outer side toward the lower side of the buffer part is shortened.

The passage is characterized in that a spiral groove extends in the inner circumferential direction along the longitudinal direction.

The noise attenuation portion is characterized in that any one of foam, styrofoam or urethane having different porosity is selectively used.

Wherein the guide portion includes a first oil tool having one end opened toward the contact portion and receiving the noise moved to the bottom slab; And a second oil guide extending upwardly from the first oil guide and extending toward the interior of the end.

Wherein the interlayer-noise-reducing assembly comprises: a molding panel installed along the rim in a state of being in contact with a vertical slab placed on the upper portion of the guide portion and contacting the floor slab, and having a plurality of through- And a diffusion chamber formed between the guide part and the molding panel and diffusing along the inner edge of the molding panel before the low frequency noise introduced through the guide part is moved to the interior area.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view schematically showing a state in which an interlayer noise preventing assembly according to an embodiment of the present invention is assembled. FIG.
FIG. 2 is a perspective view showing a cushioning unit according to another embodiment of the present invention. FIG.
3 is a view showing a state in which the buffer portion is viewed from above.

The structure of the interlayer noise prevention assembly according to an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a perspective view illustrating a buffer according to another embodiment of the present invention. FIG. 2 is a perspective view of a buffer according to another embodiment of the present invention. FIG. 3 is a view showing a state in which the buffer portion is viewed from above.

1 to 3, the interlayer noise prevention assembly 1 according to the present embodiment includes a buffer part 100 for attenuating impact applied to a concrete layer 20 formed on an upper portion of a floor slab 10, And an induction unit 200 for inducing noise transmitted through the buffer unit 100 to the room to minimize the interlayer noise.

A buffer according to an embodiment of the present invention will be described with reference to the drawings.

1 and 2, the buffer part 100 is installed in a state of being closely contacted with each other along the floor slab 10, and the size is not particularly limited, but the floor slab 10 so as to be easy to install.

When the buffer part 100 is assembled with the buffer part 100, any one of a contact type or a male type coupling type or a fixing type using an adhesive may be selectively used, and a plurality of buffer parts 100 may be closely contacted with each other Various types of coupling methods for maintaining the state in which the power supply is maintained can be selectively used. Note that a method of coupling them to each other is not shown in this embodiment.

The shock absorber 100 is made of a foam material to attenuate low-frequency noise. For example, any one of styrofoam, foamed urethane, compressed styrofoam, or reinforced plastic is selectively used. And can be used. Other materials that can dampen low-frequency noise stably can also be used.

The buffer part 100 is formed in a rectangular parallelepiped shape and has a plurality of contact parts 120 protruding downward. The contact part 120 is located on the bottom slab 10 when the bottom part is in close contact with the bottom part 120 are formed in a predetermined space, so that noise having a specific frequency is guided to the induction unit 200 and then discharged to the room to attenuate noise, so that occurrence of vibration due to interlayer noise can be minimized. For reference, the buffer portion 100 may have a thickness shown in the drawing, and the buffer portion 100 may be variously changed without being limited thereto.

The concrete layer 20 includes a foamed mortar concrete layer 21 formed on the upper surface of the cushioning part 100, a heating layer 22 formed on the upper surface of the foamed concrete concrete layer 21, (Not shown).

The buffer part 100 is formed with an opening 110 through which noise flows into the upper surface of the buffer part 100. The opening part 110 has an inlet 112 extending downward and a lower part Wherein the inlet 112 extends longitudinally downward from the top surface of the body portion 102 and the passageway 114 extends laterally from the inlet 112, .

The inlet 112 can vary in diameter or other diameters as shown in the drawings and is not necessarily limited to the diameters shown in the figures. In addition, the passageway 114 may be formed such that the entire length of the passageway 114 extends to the lower portion of the body portion 102, or the length of the passageway 114 may be relatively shortened toward the lower portion.

A plurality of the inlet ports 112 are disposed on the upper surface of the buddy section 102 so as to be spaced apart from each other. The arrangement interval and the size of the inlet ports 112 are different from each other in order to optimally attenuate the noise of the low frequency transmitted to the buffer section 100 And is not necessarily limited to the state shown in the drawings.

The principle in which the interlayer noise is attenuated by the cushioning part 100 according to the present embodiment is that the low frequency noise introduced into the first inlet 112 is firstly diffused while moving in the longitudinal direction of the cushioning part 100, 114, and is attenuated relative to a frequency band that is introduced into the first inlet 112 and is further damped in accordance with the material of the buffer part 100, so that the bottom slab 10, The amount of low-frequency noise transmitted to the vehicle is minimized.

At this time, the low-frequency noise moving along the longitudinal direction of the inlet 112 is shifted in the direction of the arrow, and the diffusion and the noise reduction by the material of the body 102 are performed at the same time.

Here, the low-frequency noise refers to low-frequency noise generated in a frequency band of about 50 Hz to 60 Hz. Since the frequency band is transmitted to a lower layer or a neighboring layer adjacent to the building, The noise reduction due to the interlayer noise is minimized through the noise attenuation.

Accordingly, the low parking noise transmitted to the initial buffering part 100 is not transmitted to the lower layer as it is, and the low-frequency noise is minimized, thereby suppressing unnecessary noise and vibration.

The passageway 114 can be enlarged in size toward the outer end. In this case, the space where the noise can be diffused is increased, so that the low-frequency noise can be relatively more attenuated and the occurrence of the interlayer noise can be minimized.

When the buffer part 100 is made of a foam material, the raw material is injected into the mold having the shape corresponding to the external shape of the buffer part 100 and the opening part 110,

In this case, the strength of the cushioning portion 100 is stably maintained, so that the deformation due to the load of the concrete layer 20 is prevented. So that the phenomenon that the upper surface is partially turned off downward after the completion of the construction for the concrete layer 20 is minimized.

The passage 114 has a spiral groove 114a extending in the inner circumferential direction along the length of the groove 114a so as to improve the speed at which the low frequency noise is moved toward the passage 114, Is formed to additionally perform noise attenuation through collision.

The groove 114a may be formed in any shape other than a spiral shape, a linear shape, a ring shape, or a lattice shape, or may be changed to another shape and is not necessarily limited to the shape shown in the drawings.

The induction unit 200 guides a low frequency noise passed through the buffer unit 100 to the room and is opened toward the buffer unit 100 to receive noise transmitted to the floor slab 10, And a second oil tool 220 extending upward from the first oil tool 210 and extending toward the interior of the first oil tool 210.

The induction part 200 is divided into a plurality of partitions (not shown) and divided into a uniform space so that a large amount of air including low-frequency noise can be easily transferred to the second oil tool 220 through the first oil tool 210 And is diffused in the diffusion chamber 402 to be described later.

The guiding part 200 may be made of relatively thin nonwoven fabric or styrofoam bonded to the inner side to attenuate low-frequency noise, and may have a hole formed in the partition wall to have a predetermined size. The open position of the hole may be open in the vicinity of the diffusion chamber 402.

The reason for opening at this position is that when the air including the low-frequency noise is moved along the guide portion 200, the position of the shock absorber 100 at a position near the diffusion chamber 402 Holes (not shown) are opened in the partition wall close to the position to further reduce low-frequency noises and minimize low-frequency noises transmitted to the room and low-frequency noises transmitted to the lower layers.

The molding panel 400 is installed along the rim in a state of being in contact with the vertical slab 11 located at the upper portion of the guide portion 200 and in contact with the floor slab 10 and a plurality of through holes 410 Is opened.

In the molding panel 400, the through holes 410 are opened upward, so that the low-frequency noise is diffused into a relatively large area, thereby attenuating vibrations in a specific frequency band that can cause inter-layer noise, It is possible to minimize the occurrence of vibration by attenuating low-frequency noise.

As described above, the through hole 410 is partially opened toward the upper part of the room area, and the remaining part of the through hole 410 is opened toward the bottom surface, so that the low frequency noise diffused through the through hole 410 can be prevented from overlapping.

The through holes 410 may extend a predetermined length along the longitudinal direction of the molding panel 400 or may extend to different lengths. For example, the through-hole 410 opened toward the upper portion of the indoor space is relatively longer than the through-hole 410 opened toward the bottom surface, and a large amount of air including a relatively low frequency is guided to the upper portion, .

The diffusion chamber 402 is formed between the induction part 200 and the molding panel 400 and extends along the inner edge of the molding panel 400 before the low frequency noise induced through the induction part 200 is moved to the indoor area. Diffusion occurs.

The diffusion chamber 402 diffuses through the air, which is a medium capable of attenuating low-frequency noise, and diffuses to the indoor area secondarily before the low-frequency noise is moved to the indoor area through the through hole 410, So that the possibility of being generated by interlayer noise can be minimized.

A predetermined space is formed in the diffusion chamber 402 along the inner rim of the room area. Since the space is formed as a uniform space, when air containing low-frequency noise flows through any area of the floor slab 10 So that low-frequency noise can be minimized.

Accordingly, all the vibration noise generated when a plurality of children jump in an irregular direction in the indoor area or move a heavy load in a specific direction is diffused in the diffusion chamber 402 via the guide portion 200, so that the low frequency noise is stably attenuated It is possible to minimize the noise that can be felt by the occupant located in the room or the occupant located on the lower floor, thereby enabling a quiet residence in the apartment such as the apartment.

The diffusion chamber 402 is formed relatively below the through hole 410 to allow the low frequency noise flowing out from the inlet port to be described later to stay in the diffusion chamber 402 for a certain time without being moved directly toward the through hole 410, The delay time during which the low-frequency noise can be diffused during the time is caused to attenuate the noise.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

10: floor slab
100: buffer
102:
110: opening
112: inlet
114: passage
114a: passage
200:
210: First Tool
220: The second kind tool
400: Molding panel
410: through hole
402: diffusion chamber

Claims

A buffer part including a body part formed along a bottom slab of the building and having an opening through which noise flows, and a contact part protruding from a lower end of the body part and kept in contact with the bottom slab; And
And an induction portion for inducing low-frequency noise passed through the buffer portion to the room.

The method according to claim 1,
The opening
An inlet formed on the upper surface of the body and extending downward;
And a passage extending in four directions from the inlet to the underside of the body portion.

3. The method of claim 2,
The inlet
Wherein a plurality of spaced apart portions are arranged on the upper surface of the body portion at predetermined intervals.

3. The method of claim 2,
The passage
And the outer edge of the outer edge is enlarged in size.

3. The method of claim 2,
The passage
And the length of the extension extending toward the outer side toward the lower side of the buffer part is shortened.

3. The method of claim 2,
The passage
And a spiral groove extending in the inner circumferential direction along the longitudinal direction.

The method according to claim 1,
Wherein the noise attenuation unit comprises:
Characterized in that either foam or styrofoam or urethane having different porosity is used selectively.

The method according to claim 1,
The guide portion
A first oil tool whose one end is opened toward the buffer part and into which noise transmitted to the bottom slab flows;
And a second oil tool extending upwardly from the first oil guide tool and extending at an end towards the interior of the housing.

The method according to claim 1,
The interlayer-noise-reducing assembly includes:
A molding panel installed at the upper portion of the guide portion and installed along the rim in a state of being closely contacted with the vertical slab contacting the floor slab and having a plurality of through holes opened toward the upper portion of the indoor region;
And a diffusion chamber formed between the guide portion and the molding panel and diffusing along the inner edge of the molding panel before the low frequency noise introduced through the guide portion is moved to the interior region.