KR20210136240A - Sound absorbing panels for interior and exterior materials of buildings - Google Patents

Sound absorbing panels for interior and exterior materials of buildings Download PDF

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KR20210136240A
KR20210136240A KR1020200054187A KR20200054187A KR20210136240A KR 20210136240 A KR20210136240 A KR 20210136240A KR 1020200054187 A KR1020200054187 A KR 1020200054187A KR 20200054187 A KR20200054187 A KR 20200054187A KR 20210136240 A KR20210136240 A KR 20210136240A
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sound
absorbing
plate
interior
upper plate
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KR1020200054187A
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Korean (ko)
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KR102349447B1 (en
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윤여성
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지에스중공업주식회사
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/296—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801—Separate fastening elements
    • E04F13/0832—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)

Abstract

The present invention relates to a sound-absorbing panel for building interior and exterior materials, which is attached to a ceiling or wall of a building to block noise generated outside and inside the building and to absorb sound at the same time, and more specifically, to a sound-absorbing panel for building interior and exterior materials, in which a sound-absorbing plate with a concave-convex pattern configured to efficiently absorb sound waves and a double sound-absorbing material are coupled to enhance noise absorption and dispersion effects.

Description

건축물 내외장재용 흡음판넬{Sound absorbing panels for interior and exterior materials of buildings}Sound absorbing panels for interior and exterior materials of buildings

본 발명은 건축물의 천정 또는 벽면에 부착하여 건물외부와 실내에서 발생되는 소음의 차단과 흡음작용을 동시에 할 수 있도록 한 건축물 내외장재용 흡음판넬에 관한 것으로, 더욱 상세하게는 음파를 효율적으로 흡수할 수 있도록 구성한 요철패턴을 가진 흡음판과 이중의 흡음재를 결합하여 소음의 흡수와 분산효과를 높인 건축물 내외장재용 흡음판넬에 관한 것이다. The present invention relates to a sound-absorbing panel for interior and exterior materials of a building, which is attached to the ceiling or wall surface of a building to simultaneously block and absorb noise generated outside and inside the building, and more particularly, it can absorb sound waves efficiently It relates to a sound-absorbing panel for interior and exterior materials of a building that enhances the absorption and dispersion effect of noise by combining a sound-absorbing plate with a concave-convex pattern and a double sound-absorbing material.

일반적으로 건물의 실내 마감재로서 내부 소음이 외부로 전달되는 것을 차단하거나 외부 소음이 내부로 전달되는 것을 차단하기 위해 흡음재가 사용된다. 또한 도로변이나 건물 공사 현장에 설치되어 차량 소음이나 공사 소음이 외부로 전달되지 않도록 차단할 목적으로 흡음장치를 설치하게 되며, 흡음장치에는 방음성능을 향상시키는 흡음판넬이 부착된다. In general, as an interior finishing material of a building, a sound absorbing material is used to block internal noise from being transmitted to the outside or to block external noise from being transmitted to the inside. In addition, it is installed on the roadside or at a building construction site to install a sound absorbing device for the purpose of blocking vehicle noise or construction noise from being transmitted to the outside.

일반적으로 흡음재는 건축물에 사용되는 암면, 글라스울을 포함하여 합성수지를 성형한 흡음보드, 우레탄 소재로 만든 흡음판이 있으며, 또 무수한 구멍을 뚫은 타공판이 흡음재로서 많이 사용되고 있다. In general, sound-absorbing materials include sound-absorbing boards molded with synthetic resin including rock wool and glass wool used in buildings, sound-absorbing plates made of urethane materials, and perforated plates with countless holes are widely used as sound-absorbing materials.

이러한 타공판은 무수한 구멍으로 인해 소리 즉 음파가 고속으로 작은 구멍을 통과하면서 산란되고 구멍의 내부에 붙게 되는 과정에서 분자의 마찰 작용으로 인해 열에너지로 전환하면서 소리가 작아지게 되어 흡음효과를 얻을 수 있게 되는 것으로 저주파 또는 고주파 대역의 흡음은 구멍의 크기와 갯수 및 깊이 등에 의해 좌우된다. In this perforated plate, sound waves are scattered through the small holes at high speed due to the countless holes, and in the process of being attached to the inside of the hole, the friction of molecules converts the sound into thermal energy and the sound becomes smaller, so that the sound absorption effect can be obtained. As a result, the absorption of low-frequency or high-frequency bands depends on the size, number, and depth of the holes.

그러나 종래에 사용되는 흡음판은 금속판재나 또는 박판에 단순히 구멍을 뚫어 형성한 것으로 음파의 흡수와 산란효과가 적고 음파의 접촉면적이 적어 흡음효율이 우수하지 않는 단점이 있었다. However, the sound-absorbing plate used in the prior art is formed by simply drilling a hole in a metal plate or a thin plate, and has a disadvantage in that the absorption and scattering effect of the sound wave is small, and the sound absorption efficiency is not excellent because the contact area of the sound wave is small.

또한, 특허등록 제10-1113485호 단열흡음판에는 흠음홀을 뚫은 주벽을 가진 흡음판체의 내부에 흡음재 및 단열재를 넣어 흡음와 단열을 할 수 있도록 한 구조가 개시되어 있다. In addition, Patent Registration No. 10-1113485 heat insulation sound absorbing plate discloses a structure that allows sound absorption and insulation by putting a sound absorbing material and a heat insulator inside the sound absorbing plate body having a main wall with a hole in the sound absorbing hole.

그러나, 이는 합성수지판이나 도색철판으로 이루어진 흡음판체가 벽면이나 천정에 보울트로서 고정 설치할 때 보울트의 조임력에 의해 얇은 박판상의 흡음판체가 가압되면서 굴신되고 짜부라져 실내마감재로서 설치시 실내미관을 미려하게 조성할 수 없는 문제점이 있었다. However, when a sound-absorbing plate made of a synthetic resin plate or a painted iron plate is fixed and installed on the wall or ceiling as a bolt, the thin-walled sound-absorbing plate body is pressed while being pressed by the tightening force of the bolt, and the interior aesthetic can be created when installed as an indoor finishing material. There was no problem.

본 발명의 목적은 상기한 점을 감안하여 안출한 것으로 음파를 효율적으로 흡수할 수 있는 구조의 요철패턴을 가진 구조로 흡음판을 구성하고 상기 흡음판에 다수층의 흡음재를 결합하여 음파의 접촉면적을 증가시켜 흡음효율을 높인 건축물 내외장재용 흡음판넬을 제공하는 데 있다. An object of the present invention is to construct a sound-absorbing plate with a structure having a concave-convex pattern of a structure that can efficiently absorb sound waves, and to increase the contact area of sound waves by combining multiple layers of sound-absorbing materials to the sound-absorbing plate. It is to provide a sound-absorbing panel for interior and exterior materials of buildings with improved sound absorption efficiency.

본 발명의 다른 목적은 종례의 흡음판체가 벽면이나 천정에 설치할 때 보울트의 조임력에 의해 굴신되거나 짜부라지는 취약점을 해결하기 위해 보울트가 설치되는 위치에 서포트를 삽입하여 보울트의 조임력으로 인한 흡음판체가 굴신되거나 짜부라지는 것을 방지하는 건축물 내외장재용 흡음판넬을 제공하는데 있다.Another object of the present invention is to insert a support at the location where the bolt is installed to solve the weakness that the conventional sound-absorbing plate body is flexed or squeezed by the clamping force of the bolt when it is installed on the wall or ceiling. It is to provide a sound-absorbing panel for interior and exterior materials of a building that prevents it from falling.

본 발명은 이와같은 목적을 달성하기 위한 수단으로, 하중이 가볍고 녹이 슬지 않으며 난연처리된 비철금속의 박판상으로 된 흡음판과 상기 흡음판의 내부에 결합되어 음파를 흡수하는 흡음재와, 상기 흡음판넬을 벽면이나 천정에 서포트와 함께 나사고정하는 보울트로 구성된 흡음판넬에 있어서, The present invention is a means for achieving such an object, a sound-absorbing material that absorbs sound waves by being combined with a sound-absorbing plate made of a thin plate of non-ferrous metal, which is light in load and not rust-resistant, and the sound-absorbing plate, and the sound-absorbing panel is mounted on a wall or ceiling In the sound-absorbing panel consisting of a bolt that is screwed together with a support,

상기, 흡음판은 장방형 형태를 가진 상판부와 상기 상면의 외주연에 수직절곡부와 수평절곡부로 이루어진 ㄷ 자 형상의 절곡테두리가 형성되어 상기 절곡테두리에 의해 뒷면에 흡음영역이 형성되고, The sound-absorbing plate is formed with a U-shaped bent border consisting of a vertical bent part and a horizontal bent part on the outer periphery of the upper plate part and the upper surface having a rectangular shape, and a sound-absorbing area is formed on the back side by the bending border,

상기, 흡음판의 상판부는 X축 방향으로 요부와 철부가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 X축열과, 상기 X축열과 교차되는 Y축 방향으로 요부와 철부가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 Y축열이 교차되어 사방으로 연속 반복되며, 상기 X축열과 Y축열의 교차부에는 사각뿔과 사각홈의 교차요철패턴이 연속 반복되어 이루어지고, 상기 사각홈의 저부에는 흡음홀이 관통되어 있으며, The upper plate portion of the sound-absorbing plate is angled in the X-axis direction with the concave portion and the convex portion at regular intervals in the X-axis direction, and the concave portion and the convex portion are angled in the Y-axis direction intersecting the X-axis column. At the intersection of the X-axis and Y-axis, the Y-axis column of the alternating continuous pattern is crossed and repeated continuously, and the intersection concavo-convex pattern of the square pyramid and the square groove is continuously repeated, and at the bottom of the square groove The sound absorption hole is penetrated,

상기, 흡음판의 상판부와 수평절곡부의 네모서리와 변부에는 보울트가 수직으로 관통되는 보울트공이 설치되어 이루어짐을 특징으로 하는 건축물 내외장재용 흡음판넬을 제공한다. It provides a sound-absorbing panel for interior and exterior building materials characterized in that the bolt hole through which the bolt is vertically penetrated is installed in the upper plate portion and the horizontal bent portion of the sound-absorbing plate.

상기 흡음재는 흡음판의 내부 흡음영역에 순서적으로 삽입되는 평판상으로 된 제1흡음재와 주름판상으로 된 제2흡음재로 이루어지며, 상기 흡음재는 부직포, 스폰지, 합성수지섬유, 펄라이트에서 선택된다. The sound-absorbing material consists of a first sound-absorbing material in a flat plate shape and a second sound-absorbing material in a corrugated plate shape that are sequentially inserted into the internal sound-absorbing area of the sound-absorbing plate, and the sound-absorbing material is selected from nonwoven fabric, sponge, synthetic resin fiber, and pearlite.

상기, 상판부와 수평절곡부의 보울트공의 내측에는 돌출부가 형성됨을 특징으로 한다. It is characterized in that a protrusion is formed inside the bolt hole of the upper plate portion and the horizontal bent portion.

상기, 상판부와 수평절곡부 사이의 보울트공 사이에는 돌출부에 상하부가 끼워져 지지되는 서포트가 삽입되어 보울트의 나사 고정시 가압력에 의해 상판이 굴신되거나 짜부라지는 것을 방지하는 것을 특징으로 한다. Between the bolt hole between the upper plate part and the horizontal bent part, a support that is supported by fitting the upper and lower parts to the protrusion is inserted to prevent the upper plate from being bent or squeezed by the pressing force when the bolt is screwed.

상기, 서포트는 모서리용 서포트와 변부용 서포트로 구분되어 이루어짐을 특징으로 한다. The support is characterized in that it is divided into a support for a corner and a support for an edge.

상기, 모서리용 서포트는 상판부의 돌출부와 결합되는 상부는 관체형상으로 이루어지고 수평절곡부의 돌출부와 결합되는 하부는 다수의 절개부가 형성되어 일부 신축이 이루어지고 하단 외주연에 단턱이 형성된 구조로 이루어짐을 특징으로 한다. The support for the corner is made of a tubular shape in the upper part coupled with the protrusion of the upper plate, and a plurality of incisions are formed in the lower part coupled with the protrusion of the horizontal bent part, so that some expansion and contraction is made, and a stepped structure is formed on the lower outer periphery. characterized.

상기, 변부용 서포트는 수평절곡부의 돌출부와 결합되는 하부는 단턱이 형성되고, 상판부의 돌출부와 결합되는 상부는 개방부와 상기 개방부의 기부에서 외측으로 벌어지는 2개의 유도간이 설치되어 이루어짐을 특징으로 한다. The support for the edge is formed with a step formed in the lower portion coupled to the protrusion of the horizontal bent portion, and the upper portion coupled to the protrusion of the upper plate is provided with an open portion and two guide rods that spread outward from the base of the open portion. .

이와같이 본 발명은 사각뿔형태와 사각홈형태의 교차요철패턴이 연속 반복되어 이루어진 사각홈의 저부에 흡음홀이 형성되어 있으므로 음파는 경사진 사각뿔화 사각홈의 경사면을 따라 저부의 흡음홀로 유입되므로 음파의 흡수효과가 매우 우수하고, 유입된 소음은 평판과 주름판으로 층합된 흡음재에 의해 흡수되어 분산됨으로써 효율적인 흡음이 이루어질 뿐 아니라 넓은 접촉면적에 의해 흡음과 방음효과를 크게 얻을 수 있는 우수한 발명이다. As described above, in the present invention, since a sound-absorbing hole is formed at the bottom of a square groove made by successively repeating a square pyramidal and square-groove-shaped cross concavo-convex pattern, the sound wave flows into the sound-absorbing hole at the bottom along the inclined surface of the inclined square pyramidal square groove. The absorption effect is very good, and the noise introduced is absorbed and dispersed by the sound-absorbing material layered with the flat plate and the corrugated plate, so that it is not only effective sound absorption, but also an excellent invention that can greatly obtain sound absorption and sound insulation effect by a large contact area.

도 1은 본 발명의 실시예에 따른 흡음판넬의 일부 확대사시도
도 2는 본 발명의 다른 실시예에 따른 흡음판넬의 일부 확대사시도
도 3은 도 1의 평면도
도 4는 도 1의 종단면도
도 5는 본 발명의 흡음판넬을 구성하는 흡음판의 일부 확대단면도
도 6은 흡음판의 내부에 설치되는 흡음재의 예시도
도 7은 도 3의 "A-A"선 확대 단면도
도 8은 도 3의 "B-B"선 확대 단면도
도 9는 모서리부에 설치되는 서포트의 사시도
도 10은 변부에 설치되는 서포트의 사시도
도 11은 도 10의 "C-C"선 단면도 1 is a partially enlarged perspective view of a sound-absorbing panel according to an embodiment of the present invention;
2 is a partially enlarged perspective view of a sound-absorbing panel according to another embodiment of the present invention;
3 is a plan view of FIG. 1
4 is a longitudinal cross-sectional view of FIG.
5 is a partially enlarged cross-sectional view of the sound-absorbing plate constituting the sound-absorbing panel of the present invention;
6 is an exemplary view of a sound-absorbing material installed inside the sound-absorbing plate;
7 is an enlarged cross-sectional view taken along line "AA" of FIG.
8 is an enlarged cross-sectional view taken along line "BB" of FIG.
9 is a perspective view of a support installed in a corner part;
10 is a perspective view of a support installed on the edge;
11 is a cross-sectional view taken along line "CC" of FIG.

이하, 본 발명의 실시예를 첨부한 도면을 참조하여 상세히 설명한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 내지 도 11에 도시된 바와 같이, 본 발명의 건축물 내외장재용 흡음판넬은 하중이 가볍고 녹이 슬지 않으며 난연처리된 비철금속의 박판상으로 된 흡음판(100)과 상기 흡음판(100)의 내부에 결합되어 음파를 흡수하는 흡음재(200)와, 상기 흡음판넬(500)을 벽면이나 천정에 서포트(300)와 함께 나사고정하는 보울트(400)로 구성된다. As shown in FIGS. 1 to 11, the sound-absorbing panel for interior and exterior materials of a building of the present invention is light-loaded and does not rust, and the sound-absorbing plate 100 and the sound-absorbing plate 100 made of a flame retardant non-ferrous metal thin plate are coupled to the inside of the sound-absorbing plate 100 to generate sound waves. It is composed of a sound-absorbing material 200 for absorbing the, and a bolt 400 for screwing the sound-absorbing panel 500 together with the support 300 to the wall or ceiling.

상기 흡음판(100)은 장방형 형태를 가진 상판부(101)와 상기 상판부(101)의 외주연에 수직절곡부(102a)와 수평절곡부(102b)로 이루어진 ㄷ 자 형상의 절곡테두리(102)가 형성되어 상기 절곡테두리(102)에 의해 뒷면에 흡음영역(가)이 형성된다. The sound-absorbing plate 100 is a U-shaped bending border 102 consisting of a vertical bent portion 102a and a horizontal bent portion 102b on the outer periphery of the upper plate portion 101 and the upper plate portion 101 having a rectangular shape is formed. A sound-absorbing area (A) is formed on the back side by the bending border 102 .

상기 흡음판(100)의 상판부(101)는 X축 방향으로 요부(103)와 철부(104)가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 X축열(105)과, 상기 X축열(105)과 교차되는 Y축 방향으로 요부(103)와 철부(104)가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 Y축열(106)이 교차되어 사방으로 연속 반복되며, 상기 X축열(105)과 Y축열(106)의 교차부에는 사각뿔(107)과 사각홈(108)의 교차요철패턴(109)이 연속 반복되어 이루어지고, 상기 사각홈(108)의 저부에는 흡음홀(110)이 관통되어 있다. The upper plate portion 101 of the sound absorbing plate 100 has an X-axis column 105 of a pattern in which the recessed portion 103 and the convex portion 104 are alternately continuous at regular intervals in the X-axis direction, and the X-axis column 105 ) in the Y-axis direction intersecting with the concave portion 103 and the convex portion 104 at a predetermined interval at an angle, the Y-axis column 106 of the alternating pattern is crossed and repeated continuously in all directions, the X-axis column 105 ) and the Y-storage 106 at the intersection of the square pyramid 107 and the square groove 108, the cross concave-convex pattern 109 is continuously repeated, and a sound-absorbing hole 110 is formed at the bottom of the square groove 108. is penetrated

또한, 상판부(101)와 수평절곡부(102b)와 변부에는 수직으로 관통되는 보울트공(401)이 각각 뚫려 있고, 상기 보울트공(401)의 내측에는 각각 돌출부(402)(403)가 형성되어 있다. In addition, bolt holes 401 penetrating vertically are drilled in the upper plate portion 101, the horizontal bent portion 102b, and the edge, respectively, and protrusions 402 and 403 are formed on the inside of the bolt hole 401, respectively. have.

상기 흡음재(200)는 흡음판(100)의 흡음영역(가)에 순서적으로 삽입되는 평판상으로 된 제1흡음재(201)와 주름판상으로 된 제2흡음재(202)로 이루어지며, 상기 흡음재(200)는 부직포, 스폰지, 합성수지섬유, 펄라이트 등이 사용된다. The sound-absorbing material 200 is composed of a first sound-absorbing material 201 in the form of a flat plate and a second sound-absorbing material 202 in the form of a corrugated plate that are sequentially inserted into the sound-absorbing region (A) of the sound-absorbing plate 100, and the sound-absorbing material ( 200), non-woven fabric, sponge, synthetic resin fiber, perlite, etc. are used.

상기 보울트(400)는 흡음판(100)과 흡음재(200)가 결합된 흡음판넬(500)을 벽면이나 천정에 고정 설치시 상판부(101)와 수평절곡부(102b)에 관통된 보울트공(401)을 통해 끼워져 나사 고정되는 것으로 상기 보울트(400)는 상판부(101)와 수평절곡부(102b) 사이의 보울트공(401)의 돌출부(402)(403)에 상하부가 끼워져 지지되는 서포트(300)에 삽입되어 보울트(400)의 나사 고정시 가압력에 의해 상판부(101)가 굴신되거나 짜부라지는 것을 방지하게 된다. The bolt 400 is a bolt hole 401 penetrating through the top plate 101 and the horizontal bent portion 102b when the sound-absorbing panel 500 in which the sound-absorbing plate 100 and the sound-absorbing material 200 are combined is fixedly installed on a wall or ceiling. The bolt 400 is screwed by being fitted through the upper and lower portions of the bolt hole 401 between the upper plate portion 101 and the horizontal bent portion 102b, and the upper and lower portions are inserted into the support 300 to be supported. It is inserted to prevent the upper plate 101 from being bent or squeezed by the pressing force when the bolt 400 is screwed.

상기 서포트(300)는 모서리와 변부에 각각 설치하는 2종류의 구조로 이루어진다. The support 300 is composed of two types of structures respectively installed at the corners and edges.

모서리에 설치하는 모서리용 서포트(301)는 도 9에 도시된 바와 같이 상판부(101)의 돌출부(402)와 결합되는 상부는 관체형상으로 이루어지고 수평절곡부(102b)의 돌출부(403)와 결합되는 하부는 다수의 절개부(302)가 형성되어 일부 신축이 이루어지고 하단 외주연에 단턱(303)이 형성된 구조로 구성되어 있다. As shown in FIG. 9, the corner support 301 installed in the corner has a tubular upper portion coupled to the protrusion 402 of the upper plate 101 and is coupled with the protrusion 403 of the horizontal bent portion 102b. The lower part is formed in a structure in which a plurality of cutouts 302 are formed, some expansion and contraction are made, and a step 303 is formed on the lower outer periphery.

변부에 설치하는 변부용 서포트(304)는 도 10에 도시된 바와 같이 수평절곡부(102b)의 돌출부(403)와 결합되는 하부는 단턱(305)이 형성되고, 상판부(101)의 돌출부(402)와 결합되는 상부는 개방부(306)와 상기 개방부(306)의 기부에서 외측으로 벌어지는 2개의 유도간(307)(307')이 설치되어 있다. As shown in FIG. 10 , the side support 304 installed on the edge is formed with a stepped 305 in the lower portion coupled with the protrusion 403 of the horizontal bent portion 102b, and the protrusion 402 of the upper plate 101 . ) and the upper part is provided with an opening 306 and two guide rods 307 and 307' that spread outward from the base of the opening 306 .

이와같이 된 본 발명은 흡음판(100)의 내부에 먼저 평판상으로 된 제1흡음재(201)를 넣고 그 외면에 주름판상으로 된 제2흡음재(202)를 밀착되게 끼워 붙여 양단부가 도 7 내지 도 8에 도시된 바와 같이 수평절곡부(102b)에 걸쳐 받쳐지도록 결합하게 되면 흡음판(100)과 흡음재(200)는 일체로 결합되어 흡음판넬(500)을 형성하게 된다. In the present invention as described above, the first sound absorbing material 201 in the form of a flat plate is first put inside the sound absorbing plate 100, and the second sound absorbing material 202 in the form of a corrugated plate is inserted into the outer surface of the sound absorbing plate 100 in close contact with both ends of FIGS. 7 to 8 When coupled to be supported over the horizontal bent portion 102b as shown in, the sound-absorbing plate 100 and the sound-absorbing material 200 are integrally coupled to form the sound-absorbing panel 500 .

이러한 흡음판넬(500)은 보울트(400)에 의해 벽면이나 천정 등에 고정 설치되는 데 흡음판넬(500)을 구성하는 상판부(101)는 요부(103)와 철부(104)가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 X축열(105)과 Y축열(106)이 교차되어 사방으로 연속 반복되고, 상기 X축열(105)과 Y축열(106)의 교차부에는 사각뿔(107)과 사각홈(108)의 교차요철패턴(109)이 연속 반복되어 이루어지며, 상기 사각홈(108)의 저부에는 흡음홀(110)이 관통되어 있으므로 교차요철패턴(109)의 연속적인 반복 구조에 의해 접촉면적이 매우 넓고, 또 연속 반복되는 사각뿔(107)과 사각홈(108)의 경사면에 의해 음파가 모이면서 흡입되며 흡입된 음파는 저부의 흡음홀(110)을 통해 내부로 유입되어 평판상의 제1흡음재(201)에 1차적으로 흡수되고 이어서 접촉면적이 매우 큰 주름판상의 제2흡음재(202)에 의해 2차적으로 흡수되면서 음향에너지가 헬름홀츠 공명이론에 의해 열에너지로 전환되어 소음의 흡음과 방음을 매우 효율적으로 이루어지게 하는 것이다. The sound-absorbing panel 500 is fixedly installed on a wall or ceiling by a bolt 400, and the upper plate 101 constituting the sound-absorbing panel 500 has a recessed portion 103 and a convex portion 104 at a predetermined interval so as to be angled. The X-axis column 105 and the Y-axis column 106 of the alternatingly continuous pattern intersect and are continuously repeated in all directions, and at the intersection of the X-axis column 105 and the Y-axis column 106, a quadrangular pyramid 107 and a square groove The intersecting concavo-convex pattern 109 of (108) is continuously repeated, and since the sound-absorbing hole 110 is penetrated at the bottom of the square groove 108, the contact area is formed by the continuous repeating structure of the intersecting concavo-convex pattern 109. The sound waves are collected and sucked by the slopes of the square pyramids 107 and square grooves 108 that are repeated continuously and very wide. As it is primarily absorbed by 201 and then is secondarily absorbed by the second sound-absorbing material 202 on a corrugated plate with a very large contact area, the acoustic energy is converted into thermal energy by the Helmholtz resonance theory, thereby greatly improving sound absorption and sound insulation of noise. to do it efficiently.

부연하면, 기존의 평판상의 다공판의 경우 음파가 흡음홀(110)으로 유입되는 과정에서 다공판에 부딪쳐 다시 반대방향으로 돌아오게 되므로서 음파의 흡수효과가 작지만, 본 발명은 교차요철패턴(109)에 의해 연속 반복되는 경사면을 가지는 사각뿔(107)과 사각홈(108)에 의해 음파가 유도되어 사각홈(108)의 저부에 뚫린 흡음홀(110)으로 빠져나가게 되므로 종래와 같이 반사되어 돌아가는 음파가 적어 흡음효율이 증가되는 것이다. In other words, in the case of a perforated plate on a conventional flat plate, sound waves collide with the perforated plate in the process of flowing into the sound-absorbing hole 110 and return in the opposite direction, so the absorption effect of sound waves is small, but the present invention provides a cross-concave-convex pattern 109 ), the sound wave is induced by the square pyramid 107 and the square groove 108 having an inclined surface that is continuously repeated by the square groove 108 and exits to the sound absorption hole 110 drilled in the bottom of the square groove 108, so the sound wave is reflected and returned as in the prior art. is less, the sound absorption efficiency is increased.

본 발명의 흡음재(200)는 제1흡음재(201)가 평판상으로 이루어져 흡음판(100)의 상판부(101) 저면에 밀착되므로 흡음홀(110)을 통해 유입된 음파는 평판상의 제1흡음재(201)에 1차 흡수되어지고, 제1흡음재(201)를 통해 분산 흡수된 음파는 이의 저면에 밀착된 주름판상의 제2흡음재(202)에서 2차 흡수되는 데 제2흡음재(202)는 주름판상으로 이루어져 있으므로 산과 골의 연속 반복으로 접촉면적이 매우 넓어 음파는 제2흡음재(202)에서 거의 흡수 소멸됨에 따라 흡음이 매우 효율적으로 이루어지게 된다. In the sound absorbing material 200 of the present invention, since the first sound absorbing material 201 is formed in a flat plate shape and is in close contact with the bottom surface of the upper plate 101 of the sound absorbing plate 100, the sound wave introduced through the sound absorbing hole 110 is a flat first sound absorbing material 201 ), and the sound waves dispersed and absorbed through the first sound absorbing material 201 are secondarily absorbed by the second sound absorbing material 202 on a corrugated plate in close contact with the bottom surface thereof, and the second sound absorbing material 202 is corrugated plate shape. Since the contact area is very wide due to continuous repetition of mountains and valleys, sound waves are absorbed and extinguished by the second sound absorbing material 202, so that sound absorption is performed very efficiently.

이와같은 작용효과를 가진 본 발명의 흡음판넬(500)은 건축물의 벽면이나 천정에 보울트(400)로서 고정되는 데, 보울트(400)는 상판과 수평절곡부(102b)의 모서리 및 변부에 뚫은 보울트공(401)을 통해 관통되어 벽면 등에 나사고정되는 것으로, 이때 흡음판넬(500)을 벽면에 견고하게 고정시키기 위해 보울트(400)를 나사조임하게 되면 얇은 박판상으로 된 흡음판(100) 자체가 굴신되어 변형되고 짜부라지게 되는 문제점이 있다. The sound-absorbing panel 500 of the present invention having such an effect is fixed to the wall or ceiling of a building as a bolt 400, and the bolt 400 is a bolt drilled in the corners and edges of the upper plate and the horizontal bent portion 102b. It is penetrated through the ball 401 and is screwed to the wall, etc. At this time, when the bolt 400 is screwed to firmly fix the sound-absorbing panel 500 to the wall, the sound-absorbing plate 100 in the form of a thin plate itself is flexed. There is a problem of being deformed and brittle.

본 발명은 이러한 문제점이 발생되지 않도록 하기 위해 보울트(400)가 설치되는 상판부(101)와 수평절곡부(102b)의 사이에 밀착상태로 끼워 이를 받치는 서포트(300)를 사용한 데 중요한 특징이 있다. In order to prevent such a problem from occurring, the present invention uses the support 300 that is fitted in close contact between the top plate 101 and the horizontal bent portion 102b on which the bolt 400 is installed and supports it. There is an important feature.

이러한 서포트는 상판부(101)와 수평절곡부(102b)의 변형이 용이한 모서리와 변형이 용이하지 않은 변부에 각각 설치하는 2종류의 구조로서 상판부(101)와 수평절곡부(102b)의 사이간격에 대응하는 길이로 이루어진다. These supports are of two types of structures installed in the easily deformable corners and in the less deformable edges of the upper plate portion 101 and the horizontal bent portion 102b, respectively, and the gap between the upper plate portion 101 and the horizontal bent portion 102b. of the corresponding length.

먼저 모서리에 설치되는 서포트(301)는 전체가 관체로 이루어지되 수평절곡부(102b)에 끼워지는 하부는 다수의 절개부(302)가 형성되어 약간의 신축이 이루어지는 구조로서 보울트(400)를 보울트공(401)에 삽입하기 전에 절개부(302)가 형성된 하부의 단턱(303)을 수평절곡부(102b)의 돌출부(403)에 먼저 끼우고 상부는 수평절곡부(102b)를 힘을 주어 벌려 간격을 넓힌 상태에서 상판부(101)의 돌출부(402)에 끼워 넣고 원래대로 위치시키면 서포트(300)는 모서리의 상하 보울트공(401)의 사이에 긴밀히 고정되는 데, 여기서 서포트(300)의 하부에 형성된 다수의 절개부(302)는 신축성을 가지게 되므로 돌출부(403)에 긴밀히 끼워짐에 따라 움직이지 않고 고정된다. First, the support 301 installed in the corner is made of a tubular body as a whole, and a plurality of cutouts 302 are formed in the lower part that is inserted into the horizontal bent portion 102b, and the bolt 400 is a bolted structure in which a little expansion and contraction is made. Before inserting into the ball 401, the lower step 303 in which the cutout 302 is formed is first inserted into the protrusion 403 of the horizontal bent portion 102b, and the upper portion is spread by applying force to the horizontal bent portion 102b. When inserted into the protrusion 402 of the upper plate 101 in a widened state and positioned as it is, the support 300 is tightly fixed between the upper and lower bolt holes 401 of the corner, where the support 300 is located in the lower part of the Since the formed plurality of cutouts 302 have elasticity, they are fixed without moving as they are closely fitted to the protrusions 403 .

또한 변부에 설치되는 서포트(304)는 변부가 모서리부에 비해 상하로 간격을 넓히는 변형이 용이하지 않으므로 전체가 관체로 이루어지되 수평절곡부(102b)의 돌출부(403)와 결합되는 하부는 단턱(305)이 형성되고, 상판부(101)의 돌출부(402)와 결합되는 상부는 개방부(306)를 형성시켜 하부의 단턱(305)을 수평절곡부(102b)의 돌출부(403)에 먼저 끼운 상태에서 상부를 개방부(306)를 이용하여 상판부(101)의 돌출부(402)와 계합하게 되면 개방부(306)에 의해 변부의 상하 간격을 넓히지 않고도 상판부(101)와 수평절곡부(102b)의 각 돌출부(402)(403)에 끼워 설치할 수 있고, 이때 개방부(306)에는 기부에서 외측으로 벌어지는 유도간(307)(307')이 설치되어 돌출부(402)(403)에 끼워 넣을 때 유도간(307)(307')의 안내로서 보다 쉽게 끼워 넣을 수 있게 된다.In addition, since the support 304 installed on the edge is not easily deformed to widen the distance up and down compared to the edge, the whole is made of a tubular body, but the lower portion coupled with the protrusion 403 of the horizontal bent portion 102b is a step ( 305) is formed, and the upper portion coupled with the protrusion 402 of the upper plate 101 forms an open portion 306, and the lower step 305 is first inserted into the protrusion 403 of the horizontal bent portion 102b. When the upper part is engaged with the protrusion 402 of the upper plate 101 using the opening 306 in It can be installed by fitting into each of the protrusions 402 and 403 of As a guide for the guide rods 307 and 307', they can be inserted more easily.

이와같이 흡음판넬(500)을 모서리와 변부의 상판부(101)와 수평절곡부(102b)의 사이 상하 보울트공(401) 사이에 서포트(300)를 끼워 넣은 상태에서 보울트(400)를 보울트공(401)과 서포트(300)를 통과하여 삽입하고 벽면에 나사 고정하게 되면 보울트(400)를 강하게 조여도 서포트(300)가 상판부(101)와 수평절곡부(102b)의 사이에 받쳐져 있으므로 상판부(101)가 굴신되거나 짜부라지지 않게 됨에 따라 흡음판넬(500)의 변형을 방지할 수 있게 되는 것이다. In this way, in the state where the support 300 is inserted between the upper and lower bolt holes 401 between the upper and lower bolt holes 401 between the upper and lower plate portions 101 and the horizontal bent portions 102b of the sound-absorbing panel 500, the bolt 400 is inserted into the bolt hole 401. ) and the support 300, when inserted and screwed to the wall surface, even if the bolt 400 is strongly tightened, the support 300 is supported between the upper plate part 101 and the horizontal bent part 102b, so the upper plate part 101 ) is to be able to prevent the deformation of the sound-absorbing panel 500 as it does not bend or squeeze.

본 발명을 흡음판넬(500)을 구성하는 흡음판(100)의 상판부(101)를 보강하는 실시예로서 도 2와 같이 보울트가 설치되는 외주연 가장자리에 엠보싱을 하게 되면 상판부(101)의 강도를 보다 강하게 보강할 수 있다. As an embodiment of reinforcing the upper plate portion 101 of the sound-absorbing plate 100 constituting the sound-absorbing panel 500 according to the present invention, as shown in FIG. can be strongly reinforced.

이와같은 본 발명에 따르면, 사각뿔(107)과 사각홈(108)이 연속 반복된 교차요철패턴(109)으로 구성된 흡음판(100)에 의해 음파와 음향이 효율적으로 흡수되어 흡음판(100)에서 2차에 걸쳐 흡수 분산되면서 소멸되므로 흡음과 방음효과가 매우 크며, 서포트(300)에 의해 흡음판넬(500)을 벽면에 고정시 보울트(400)의 가압력에 의해 흡음판(100)이 변형되거나 짜부라지는 문제가 발생하지 않으므로 흡음과 방음을 겸하면서 미려한 장식용 건축용 내외장재로서 유용하게 사용할 수 있는 효과가 있다. According to the present invention as described above, sound waves and sounds are efficiently absorbed by the sound-absorbing plate 100 composed of the alternating concave-convex pattern 109 in which the square pyramid 107 and the square groove 108 are continuously repeated, and the second sound wave in the sound-absorbing plate 100 is The sound absorption and soundproofing effect is very large because it is absorbed and dispersed throughout Since it does not generate, it has the effect of being useful as an interior and exterior material for beautiful decorative constructions while simultaneously sound-absorbing and soundproofing.

100 : 흡음판 101 : 상판부 102 : 절곡테두리 102a : 수직절곡부 102b : 수평절곡부 103 : 요부 104 : 철부 105 : X축열 106 : Y축열 107 : 사각뿔 108 : 사각홈 109 : 교차요철패턴 110 : 흡음홀 200 : 흡음재 201 : 제1흡음재 202 : 제2흡음재 300 : 서포트 301 : 모서리용 서포트 302 : 절개부 303,305 : 단턱 304 : 변부용 서포트 306 : 개방부 307, 307' : 유도간 400 : 보울트 401 : 보울트공 402, 403 : 돌출부 500 : 흡음판넬 가 : 흡음영역 100: sound absorbing plate 101: upper plate 102: bending border 102a: vertical bent part 102b: horizontal bent part 103: recess 104: convex part 105: X heat 106: Y heat 107: square pyramid 108: square groove 109: cross uneven pattern 110: sound absorption hole 200: Sound-absorbing material 201: First sound-absorbing material 202: Second sound-absorbing material 300: Support 301: Support for corners 302: Cutout 303,305: Step 304: Edge support 306: Open part 307, 307': Induction period 400: Bolt 401: Bolt Ball 402, 403: Projection 500: Sound-absorbing panel A: Sound-absorbing area

Claims (7)

하중이 가볍고 녹이 슬지 않으며 난연처리된 비철금속 또는 합성수지 재질의 박판상으로 된 흡음판(100)과 상기 흡음판(100)의 내부에 결합되어 음파를 흡수하는 흡음재(200)와, 상기 흡음판넬(500)을 벽면이나 천정에 서포트(300)와 함께 나사고정하는 보울트(400)로 구성된 흡음판넬(500)에 있어서,
상기, 흡음판(100)은 장방형 형태를 가진 상판부(101)와 상기 상면의 외주연에 수직절곡부(102a)와 수평절곡부(102b)로 이루어진 ㄷ 자 형상의 절곡테두리(102)가 형성되어 상기 절곡테두리(102)에 의해 뒷면에 흡음영역(가)이 형성되고,
상기, 흡음판(100)의 상판부(101)는 X축 방향으로 요부(103)와 철부(104)가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 X축열(105)과, 상기 X축열(105)과 교차되는 Y축 방향으로 요부(103)와 철부(104)가 각이지게 일정간격을 두고 교대로 연속되는 패턴의 Y축열(106)이 교차되어 사방으로 연속 반복되며, 상기 X축열(105)과 Y축열(106)의 교차부에는 사각뿔(107)과 사각홈(108)의 교차요철패턴(109)이 연속 반복되어 이루어지고, 상기 사각홈(108)의 저부에는 흡음홀(110)이 관통되어 있으며,
상기, 흡음판(100)의 상판부(101)와 수평절곡부(102b)의 네모서리와 변부에는 보울트(400)가 수직으로 관통되는 보울트공(401)이 설치되어 이루어짐을 특징으로 하는 건축물 내외장재용 흡음판넬. The sound absorbing plate 100 and the sound absorbing plate 100 in the form of a thin plate made of a non-ferrous metal or synthetic resin material that is light in weight and does not rust, and a sound absorbing material 200 that absorbs sound waves by absorbing the sound waves 200 and the sound absorbing panel 500 on the wall surface In the sound-absorbing panel 500 consisting of a bolt 400 screwed together with the support 300 to the ceiling or,
The sound absorbing plate 100 is a U-shaped bending border 102 consisting of a vertical bent portion 102a and a horizontal bent portion 102b on the outer periphery of the upper plate portion 101 and the upper surface having a rectangular shape is formed, the A sound-absorbing area (A) is formed on the back side by the bending border 102,
The upper plate portion 101 of the sound absorbing plate 100 has an X-axis column 105 of a pattern in which the recessed portion 103 and the convex portion 104 are alternately continuous at regular intervals in the X-axis direction, and the X-axis column ( 105) in the Y-axis direction intersecting with the concave portion 103 and the convex portion 104 at a predetermined interval at an angle, the Y-axis column 106 of the alternating pattern is crossed and repeated continuously in all directions, the X-axis column ( At the intersection of 105) and the Y-storage column 106, a cross-convex pattern 109 of a square pyramid 107 and a square groove 108 is continuously repeated, and a sound-absorbing hole 110 is formed at the bottom of the square groove 108. is penetrated,
In the four corners and sides of the upper plate 101 and the horizontal bent portion 102b of the sound absorbing plate 100, the bolt 400 is vertically penetrating the bolt hole 401 is installed. panel. 제 1 항에 있어서, 상기 흡음재(200)는 흡음판(100)의 내부 흡음영역(가)에 순서적으로 삽입되는 평판상으로 된 제1흡음재(201)와 주름판상으로 된 제2흡음재(202)로 이루어지며, 상기 흡음재(200)는 부직포, 스폰지, 합성수지섬유, 펄라이트에서 선택되는 건축물 내외장재용 흡음판넬. According to claim 1, wherein the sound absorbing material 200 is a flat plate-shaped first sound absorbing material 201 and a corrugated plate-shaped second sound absorbing material 202 which are sequentially inserted into the inner sound absorbing region (A) of the sound absorbing plate 100. Made of, the sound-absorbing material 200 is a sound-absorbing panel for interior and exterior building materials selected from nonwoven fabric, sponge, synthetic resin fiber, and perlite. 제 1 항에 있어서, 상판부(101)와 수평절곡부(102b)의 보울트공(401)의 내측에는 돌출부(402)(403)가 형성됨을 특징으로 하는 건축물 내외장재용 흡음판넬. The sound-absorbing panel for interior and exterior building materials according to claim 1, wherein protrusions 402 and 403 are formed inside the bolt hole 401 of the upper plate 101 and the horizontal bent portion 102b. 제 1 항에 있어서, 상판부(101)와 수평절곡부(102b) 사이의 보울트공(401) 사이에는 돌출부(402)(403)에 상하부가 끼워져 지지되는 서포트(300)가 삽입되어 보울트(400)의 나사 고정시 가압력에 의해 상판이 굴신되거나 짜부라지는 것을 방지하는 것을 특징으로 하는 건축물 내외장재용 흡음판넬. According to claim 1, Between the bolt hole 401 between the upper plate portion 101 and the horizontal bent portion (102b), the upper and lower portions are inserted into the protrusions 402 and 403, and the support 300 is inserted and the bolt 400 is inserted. A sound-absorbing panel for interior and exterior materials of a building, characterized in that it prevents the upper plate from being bent or squeezed by the pressing force when fixing the screws. 제 4 항에 있어서, 서포트(300)는 모서리용 서포트(301)와 변부용 서포트(304)로 구분되어 이루어짐을 특징으로 하는 건축물 내외장재용 흡음판넬. [Claim 5] The sound-absorbing panel for interior and exterior building materials according to claim 4, wherein the support 300 is divided into a corner support 301 and a side support 304. 제 5 항에 있어서, 모서리용 서포트(301)는 상판부(101)의 돌출부(402)와 결합되는 상부는 관체형상으로 이루어지고 수평절곡부(102b)의 돌출부(403)와 결합되는 하부는 다수의 절개부(302)가 형성되어 일부 신축이 이루어지고 하단 외주연에 단턱(303)이 형성된 구조로 이루어짐을 특징으로 하는 건축물 내외장재용 흡음판넬.According to claim 5, wherein the corner support 301 is made of a tubular upper portion coupled to the protrusion 402 of the upper plate portion 101, and the lower portion coupled to the protrusion 403 of the horizontal bent portion 102b is a plurality of A sound-absorbing panel for interior and exterior materials of a building, characterized in that the cutout 302 is formed so that it is partially stretched and a stepped 303 is formed on the lower outer periphery. 제 5 항에 있어서, 변부용 서포트(304)는 수평절곡부(102b)의 돌출부(403)와 결합되는 하부는 단턱(305)이 형성되고, 상판부(101)의 돌출부(402)와 결합되는 상부는 개방부(306)와 상기 개방부(306)의 기부에서 외측으로 벌어지는 2개의 유도간(307)(307')이 설치되어 이루어짐을 특징으로 하는 건축물 내외장재용 흡음판넬.
According to claim 5, wherein the side support 304, the lower portion coupled to the protrusion 403 of the horizontal bent portion (102b) is formed with a stepped 305, the upper portion coupled to the protrusion 402 of the upper plate portion (101) is a sound-absorbing panel for interior and exterior materials of a building, characterized in that the opening 306 and the two guide rods 307, 307' that spread outward from the base of the opening 306 are installed.
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KR101395981B1 (en) * 2013-10-11 2014-05-27 주식회사 대일휀스 Ceiling acoustics panel having sound aborption functions
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KR101851579B1 (en) * 2011-04-04 2018-04-24 유에스지 인테리어스, 엘엘씨 Corrugated acoustical panel and production method
KR200467428Y1 (en) * 2011-04-13 2013-06-12 주식회사 동성진흥 A soundproof board
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