KR100684546B1 - A safe soundproofing door for buildings - Google Patents

A safe soundproofing door for buildings Download PDF

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Publication number
KR100684546B1
KR100684546B1 KR1020060067747A KR20060067747A KR100684546B1 KR 100684546 B1 KR100684546 B1 KR 100684546B1 KR 1020060067747 A KR1020060067747 A KR 1020060067747A KR 20060067747 A KR20060067747 A KR 20060067747A KR 100684546 B1 KR100684546 B1 KR 100684546B1
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South Korea
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sides
sound absorbing
coupled
porous
panel
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KR1020060067747A
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Korean (ko)
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구본규
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(주)건축사사무소서희건축
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • E06B7/36—Finger guards or other measures preventing harmful access between the door and the door frame

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)

Abstract

A safe soundproof door for construction is provided to improve user safety when being opened and closed, as well as effectively preventing noise and smell. A safe soundproof door for construction comprises a sound absorption panel(10), a pair of porous panels(20a,20b), and a pair of punch finishing plates(30a,30b). The sound absorption panel includes a plurality of sound absorption projections(11) attached to both sides to absorb noise, and a serrated packing projection(12) made of rubber and formed on circumference except one side where a hinge is mounted. The serrated packing projection is provided to prevent a user's finger from getting caught in a door gap. The porous panels are connected to both sides of the sound absorption panel. The porous panel includes a plurality of holes(21) formed on the surface for engagement with the sound absorption projections, thereby being connected to upper and lower parts of one side by connection brackets(24). The punch finishing plates include a plurality of holes(31) and finish both sides of the porous panels by fitting with a corner connection fixture(23).

Description

건축용 안전 방음도어{A safe soundproofing door for buildings}A safe soundproofing door for buildings}

도 1은 본 발명에 따른 안전 방음도어을 보인 분리사시도.1 is an exploded perspective view showing a safety soundproof door according to the present invention.

도 2는 본 발명에 따른 안전 방음도어의 구조를 보인 분리사시도.Figure 2 is an exploded perspective view showing the structure of the safety soundproof door according to the present invention.

도 3은 본 발명에 따른 안전 방음도어를 보인 정면도.Figure 3 is a front view showing a safety soundproof door according to the present invention.

도 4는 본 발명에 따른 안전 방음도어의 결합상태를 보인 횡단면도.Figure 4 is a cross-sectional view showing a coupled state of the safety soundproof door according to the invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

1 : 문틀 2 : 도어1: door frame 2: door

10 : 흡음판넬 11 : 흡음돌기10: sound absorption panel 11: sound absorption protrusion

12 : 패킹돌기 20a, 20b : 다공판넬12: packing protrusion 20a, 20b: porous panel

21 : 통공 22 : 단턱21: through-hole 22: step

23 : 모서리연결고정구 24 : 결속브라켓23: corner connection fixture 24: binding bracket

25 : 설치홈 30a, 30b : 타공마감판25: installation groove 30a, 30b: punching finish plate

31 : 통공31: through

본 발명은 건물 등의 출입구에 설치되는 안전 방음도어에 관한 것으로, 더욱 상세하게는 양측면에 다수의 흡음돌기가 부착형성되는 흡음판넬의 양측에 한 쌍의 다공판넬을 결속브라켓으로 결합고정하고, 그 다공판넬의 양측을 다수의 통공이 형성된 타공마감판으로 마감토록 하며, 흡음판넬의 외측면에는 문을 열고 닫을 때 손가락 등이 끼는 것을 방지할 수 있는 톱니형 패킹돌기를 체결고정하여 방음 및 안전사고를 미연에 방지할 수 있도록 한 건축용 안전 방음도어에 관한 것이다. The present invention relates to a safety soundproof door installed at an entrance of a building or the like, and more particularly, a pair of porous panels are coupled to and fixed to both sides of a sound absorbing panel to which a plurality of sound absorbing protrusions are formed on both sides thereof. Both sides of the perforated panel should be finished with a perforated finish plate formed with a plurality of through holes, and the outer side of the sound absorbing panel is fixed with a toothed packing protrusion that prevents fingers from being caught when opening and closing the door. The present invention relates to a safety sound-proof door for construction that can prevent the accident.

일반적으로 아파트나 빌딩 등의 각종 건물 등의 출입구에는 실내,외를 구분하여 개인의 사생활을 존중토록 하며, 소음과 악취 등이 누출되는 것을 방지할 목적으로 도어가 설치된다.In general, doors are installed at entrances to various buildings such as apartments or buildings to respect the privacy of individuals by separating the interior and exterior, and to prevent the leakage of noise and odors.

그러나, 이와 같은 용도로 사용되는 종래의 도어에 의하면, 도어를 구성하는 전,후판넬의 내측에 골판지를 넣어 접착시켜 도어를 제조하게 됨으로서 내부 공간이 많게되어 방음이 제대로 이루어지지 않아 옆방에서도 소리가 들리게 되어 사생활이 보호되지 않는 결점이 있었을 뿐 아니라 단열효과도 떨어져 열 손실이 많게되는 문제점이 있었다.However, according to the conventional door used for this purpose, by inserting the cardboard to the inside of the front and rear panels constituting the door to produce a door by making a lot of interior space, the sound is not properly sounded even in the next room There was a defect that the privacy is not protected, as well as the heat insulation effect is also a lot of heat loss.

또한, 도어가 설치되는 문틀과, 도어 사이에 형성되는 틈새에 손가락이 끼어 상처를 입게 되는 등의 안전상의 문제 또한 발생하였다.In addition, a safety problem such as a finger being caught in a gap between the door frame in which the door is installed and the gap formed between the doors has also occurred.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 그 주된 목적으로는 건물 등의 출입구에 설치되는 도어에서 양측면에 다수의 흡음돌기가 부착형성되는 흡음판넬의 양측에 한 쌍의 다공판넬을 결속브라켓으로 결합고정하고, 그 다공판넬의 양측을 다수의 통공이 형성된 타공마감판으로 마감토록 하며, 흡음판넬의 외측 면에는 문을 열고 닫을 때 손가락 등이 끼는 것을 방지할 수 있는 톱니형 패킹돌기를 부착고정하여 방음 및 안전사고를 미연에 방지할 수 있도록 한 건축용 안전 방음도어을 제공하는 데 있다.The present invention is to solve the above problems, the main purpose of the binding bracket is a pair of porous panels on both sides of the sound absorbing panel is formed in the door is installed at the entrance of the building, such as a plurality of sound absorbing projections on both sides. Fixed and fixed to each side, and both sides of the perforated panel to be finished with a perforated finish plate formed with a plurality of through holes, and the outer surface of the sound absorbing panel is attached with a toothed packing projection that prevents fingers or the like when the door is opened and closed It is to provide a safety soundproof door for construction that can be fixed to prevent sound insulation and safety accidents in advance.

상기 목적을 달성하기 위하여, In order to achieve the above object,

양측면에는 소음을 흡수할 수 있는 다수의 흡음돌기가 부착형성되고, 경첩이 부착되는 면을 제외한 3면의 테두리에는 손가락 등이 끼는 것을 방지하기 위한 톱니형상의 패킹돌기가 부착형성되는 흡음판넬과; A sound absorbing panel having a plurality of sound absorbing protrusions attached to both sides to absorb noise, and a toothed packing protrusion for attaching a tooth-shaped packing protrusion to prevent fingers from being caught on the edges of the 3 surfaces except for the hinged surface;

상기 흡음판넬의 양측면에 결합되며, 표면에 형성되는 다수의 통공에 흡음판넬에 부착된 흡음돌기가 결합되어 일측면의 상,하부에서 결속브라켓으로 결합되는 한 쌍의 다공판넬과; A pair of porous panels coupled to both sides of the sound absorbing panel, the sound absorbing protrusions attached to the sound absorbing panel coupled to a plurality of through holes formed on a surface thereof, and coupled to a binding bracket at upper and lower sides of one side thereof;

상기 흡음판넬의 양측에 결속브라켓을 통해 결합되는 한 쌍의 다공판넬을 양측면을 마감할 수 있도록 다공판넬의 모서리에 결합되는 모서리연결고정구에 끼워져 다공판넬과 결합되며, 표면에는 상기 흡음판넬의 흡음돌기와 동일위치 마다 다수의 통공이 형성되는 타공마감판;으로 이루어진다.A pair of perforated panels coupled to both sides of the sound absorbing panel are coupled to the perforated panel to be coupled to the corner connecting fixtures coupled to the edges of the perforated panel so as to close both sides. Comprising: perforated plate formed with a plurality of through holes in the same position.

즉, 건물 등의 출입구에 설치되는 도어에서 양측면에 다수의 흡음돌기가 부착형성되는 흡음판넬의 양측에 한 쌍의 다공판넬을 결속브라켓으로 결합고정하고, 그 다공판넬의 양측을 다수의 통공이 형성된 타공마감판으로 마감토록 하며, 흡음판넬의 외측면에는 문을 열고 닫을 때 손가락 등이 끼는 것을 방지할 수 있는 톱니형 패킹돌기를 체결고정하므로서, 방음 및 안전사고를 미연에 방지할 수 있게 된 다.That is, in a door installed at an entrance of a building or the like, a pair of perforated panels are fixed to the both sides of the sound absorbing panel on which both sound absorbing protrusions are formed on both sides by a binding bracket, and a plurality of through holes are formed at both sides of the porous panel. It is made to finish with perforated finish plate, and it is possible to prevent soundproofing and safety accidents by fastening and fixing the toothed packing protrusion that prevents fingers from being caught when opening and closing the door. .

이하 첨부된 도면을 참조하여 본 발명의 구성과 일실시예를 구체적으로 설명하면 다음과 같다. Hereinafter, a configuration and an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 안전 방음도어을 보인 분리사시도이고, 1 is an exploded perspective view showing a safety soundproof door according to the present invention,

도 2는 본 발명에 따른 안전 방음도어의 구조를 보인 분리사시도이며, Figure 2 is an exploded perspective view showing the structure of the safety soundproof door according to the present invention,

도 3은 본 발명에 따른 안전 방음도어를 보인 정면도이고,3 is a front view showing a safety soundproof door according to the present invention,

도 4는 본 발명에 따른 안전 방음도어의 결합상태를 보인 횡단면도이다.Figure 4 is a cross-sectional view showing a coupled state of the safety soundproof door according to the present invention.

본 발명에 따른 건축용 안전 방음도어은 도어를 통한 소음을 차단하여 방음을 이루도록 함과 동시에 도어와 문틀 사이의 틈새에 손가락 등이 끼는 등의 안전사고를 방지하고자하는 것으로, 이를 위해서 도 1 내지 도 4에 도시한 바와 같이, 먼저, 양측면에는 소음을 흡수할 수 있는 다수의 흡음돌기(11)가 부착형성되고, 경첩이 설치되는 면을 제외한 3면의 테두리에는 문틈과의 틈새를 마감하고 손가락 등이 끼는 것을 방지하기 위하여 고무재질로 되는 톱니형상의 패킹돌기(12)가 부착형성되는 흡음판넬(10)을 구비한다.Safety soundproof doors for building according to the present invention is to prevent the safety accidents such as getting a finger or the like in the gap between the door and the door frame while blocking the noise through the door to achieve sound insulation, for this purpose in Figures 1 to 4 As shown in the figure, first, a plurality of sound absorbing protrusions 11 are formed on both sides to absorb noise, and the edges of the three surfaces except the surface on which the hinge is installed are closed with a gap between the door and the fingers are caught. In order to prevent this from being provided with a sound-absorbing panel 10 to which the tooth-shaped packing protrusion 12 made of rubber material is attached.

이때, 흡음판넬(10)의 양측면에 부착되는 흡음돌기(11)로는 소음을 차단할 수 있는 재질이면 어떠한 재질이어도 무방하며, 저렴하면서도 흔히 사용되는 스티로플폼 또는 스펀지 등을 이용함이 바람직하다.At this time, as the sound absorbing protrusions 11 attached to both sides of the sound absorbing panel 10, any material may be used as long as it can block the noise, and it is preferable to use a styrofoam foam or sponge, which is inexpensive and commonly used.

이어, 상기 흡음판넬(10)의 양측면에는 흡음판넬(10)에 부착된 흡음돌기(11)와 결합될 수 있도록 표면에 다수의 통공(21)이 형성되는 한 쌍의 다공판넬(20a, 20b)을 결합하되, 다공판넬(20a, 20b)의 양측면에는 표면에 다수의 통공(31)이 형 성되는 타공마감판(30a, 30b)을 결합하여 다공판넬(20a, 20b)을 마감토록 한다.Subsequently, a pair of porous panels 20a and 20b having a plurality of through holes 21 formed on a surface of the sound absorbing panel 10 so as to be coupled to the sound absorbing protrusion 11 attached to the sound absorbing panel 10. To combine, but to both sides of the porous panel (20a, 20b) to combine the perforated finish plate (30a, 30b) to form a plurality of through holes 31 on the surface to finish the porous panel (20a, 20b).

이때, 다공판넬(20a, 20b)과 타공마감판(30a, 30b)의 결합은 다공판넬(20a, 20b)의 통공(21)과 타공마감판(30a, 30b)의 통공(3)이 서로 일치되게 하여 다공판넬(20a, 20b)과 타공마감판(30a, 30b)을 서로 접면시킨 상태에서 다공판넬(20a, 20b)의 각 모서리 단턱(22)에 결합되는 모서리연결고정구(23)에 타공마감판(30a, 30b)을 모서리를 끼움결합하여 서로 결합토록 하고, 타공마감판(30a, 30b)이 결합된 상태의 다공판넬(20a, 20b)은 다공판넬(20a, 20b)의 일측면 상,하부에 형성되는 설치홈(25)에 설치되는 결속브라켓(24)을 이용하여 흡음판넬(10)의 양측에서 서로 결합토록 한다.
또한, 다공판넬(20a, 20b)의 각 모서리 단턱(22)과 타공마감판(30a, 30b)을 결합고정하기 위한 모서리연결고정구(23)는 삼각형상으로 형성되어 삼각형상의 밑면에 해당되는 부분의 내측에 삽입홈(23')이 형성되는 형상으로 형성되며, 그 삽입홈(23')에 다공판넬(20a, 20b)의 각 모서리 단턱(22)과 타공마감판(30a, 30b)의 모서리를 끼워 다공판넬(20a, 20b)과 타공마감판(30a, 30b)을 서로 결합토록 한다.At this time, the coupling of the perforated panels 20a and 20b and the perforated finish plates 30a and 30b coincides with the through-hole 21 of the perforated panels 20a and 20b and the perforated 3 through the perforated finish plates 30a and 30b. The perforated finish on the edge connection fixture 23 coupled to each corner step 22 of the perforated panels 20a and 20b while the perforated panels 20a and 20b and the perforated finish plates 30a and 30b are in contact with each other. The plates 30a and 30b are fitted with the edges to be coupled to each other, and the porous panels 20a and 20b in the state that the perforated finish plates 30a and 30b are coupled to each other on one side of the porous panels 20a and 20b. By using the binding bracket 24 is installed in the mounting groove 25 formed in the lower to be coupled to each other on both sides of the sound absorbing panel (10).
In addition, the corner connecting fixtures 23 for fastening the corner step 22 and the perforated finishing plates 30a and 30b of the perforated panels 20a and 20b are formed in a triangular shape to be formed at the bottom of the triangle. Insertion grooves 23 'are formed in the inner shape, and the edges of each corner step 22 and the perforated finish plates 30a and 30b of the porous panels 20a and 20b are formed in the insertion grooves 23'. The porous panels 20a and 20b and the perforated finish plates 30a and 30b are fitted to each other.

또한, 상기 흡음판넬(10)의 양측에 결속브라켓(24)을 통해 결합되는 다공판넬(20a, 20b)과 타공마감판(30a, 30b)에 형성되는 다수의 통공(21)(31)은 흡음판넬(10)의 흡음돌기(11)와 동일위치에 위치되도록 결합하여 이루어진다. In addition, the plurality of through holes 21 and 31 formed in the perforated panels 20a and 20b and the perforated finish plates 30a and 30b coupled to both sides of the sound absorbing panel 10 through the binding bracket 24 are absorbed. Combination is made so as to be located at the same position as the sound absorbing projection (11) of the panel (10).

이와 같은 구성의 본 발명에 따른 건축용 안전 방음도어에 의하면, 도 2에 도시한 바와 같이, 양측면에 다수의 흡음돌기(11)가 부착형성되는 흡음판넬(10)의 양측으로 모서리연결고정구(23)를 통해 결합되는 다공판넬(20a, 20b)과 타공마감판(30a, 30b)을 흡음돌기(11)와 각각의 통공(21)(31)이 서로 일치되게 한 후, 다공판넬(20a, 20b)의 일측 상,하부에 설치되는 결속브라켓(24)으로 결합고정하므로서, 도어(2)를 통한 소음을 완벽하게 차단할 수 있게 됨은 물론, 톱니형 패킹돌기(12)가 도어(2)와 문틀(1)사이에 형성되는 틈새를 차단하게 되므로서, 틈새를 통한 소음 및 외기 등을 완벽하게 차단할 수 있게 됨과 동시에 문틀(1)과 도어(2)사이에 손가락이 끼어 상처를 입는 등의 안전사고를 방지할 수 있게 된다.According to the safety soundproof door for building according to the present invention having such a configuration, as shown in Figure 2, the corner connecting fixture 23 to both sides of the sound absorbing panel 10 is formed with a plurality of sound absorbing projections 11 are formed on both sides. After making the sound absorbing protrusions 11 and the respective through holes 21 and 31 coincide with each other through the porous panels 20a and 20b and the perforated finishing plates 30a and 30b coupled through the porous panels 20a and 20b, By fixing the coupling bracket 24 is installed on one side of the upper and lower sides, it is possible to completely block the noise through the door (2), as well as the sawtooth packing projection 12 is the door 2 and the door frame (1) By blocking the gap formed between the), it is possible to completely block the noise and outside air through the gap and to prevent safety accidents such as getting a finger caught between the door frame (1) and the door (2). You can do it.

또한, 흡음판넬(10)의 양측면에 부착형성되는 다수의 흡음돌기(11)를 통해 타공마감판(30a, 30b) 및 다공판넬(20a, 20b)의 통공(21)(31)으로 유입되는 소음을 흡수토록 하므로서, 소음을 차단할 수 있게 된다.In addition, noise introduced into the through holes 21 and 31 of the perforated finishing plates 30a and 30b and the porous panels 20a and 20b through a plurality of sound absorbing protrusions 11 formed on both sides of the sound absorbing panel 10. By absorbing the noise, it is possible to block the noise.

그리고 본 발명은 특정의 바람직한 실시예에 관련하여 도시하고 설명하였지만, 이하의 특허청구범위에 의해 마련되는 본 발명의 정신이나 분야를 이탈하지 않는 한도 내에서 본 발명이 다양하게 개조 및 변화될 수 있다는 것을 당업계에서 통상의 지식을 가진 자는 용이하게 알 수 있다.And while the present invention has been shown and described with respect to certain preferred embodiments, it will be understood that the present invention may be variously modified and changed without departing from the spirit or scope of the invention as set forth in the claims below. Those skilled in the art can easily know that.

이상에서 설명한 바와 같이, 본 발명은 양측면에 다수의 흡음돌기가 부착형성되는 흡음판넬의 양측에 한 쌍의 다공판넬을 결속브라켓으로 결합고정하고, 그 다공판넬의 양측을 다수의 통공이 형성된 타공마감판으로 마감토록 하며, 흡음판넬의 외측면에는 문을 열고 닫을 때 손가락 등이 끼는 것을 방지할 수 있는 톱니형 패킹돌기를 체결 고정하므로서, 방음 및 안전사고를 미연에 방지할 수 있는 효과가 있다.As described above, in the present invention, a pair of porous panels are fixed to each side of a sound absorbing panel to which a plurality of sound absorbing protrusions are formed on both sides by a binding bracket, and a punching finish having a plurality of holes formed on both sides of the porous panel. Finished with a plate, and by fixing and fixing the toothed packing protrusions to prevent the fingers caught when opening and closing the door on the outer surface of the sound absorbing panel, there is an effect that can prevent sound insulation and safety accidents in advance.

Claims (1)

양측면에는 소음을 흡수할 수 있는 다수의 흡음돌기(11)가 부착형성되고, 경첩이 설치되는 면을 제외한 3면의 테두리에는 손가락 등이 끼는 것을 방지하기 위하여 고무재질로 되는 톱니형상의 패킹돌기(12)가 부착형성되는 흡음판넬(10)과; A plurality of sound absorbing protrusions 11 are formed on both sides to absorb noises, and tooth-shaped packing protrusions made of rubber material to prevent fingers or the like from being caught on the edges of the three surfaces except for the surface on which the hinges are installed ( 12) the sound-absorbing panel 10 is attached; 상기 흡음판넬(10)의 양측면에 결합되며, 표면에 형성되는 다수의 통공(21)에 흡음판넬(10)에 부착된 흡음돌기(11)가 결합되어 일측면의 상,하부에서 결속브라켓(24)으로 결합되는 한 쌍의 다공판넬(20a, 20b)과; It is coupled to both sides of the sound absorbing panel 10, the sound absorbing projection (11) attached to the sound absorbing panel 10 is coupled to a plurality of through-holes 21 formed on the surface of the binding bracket 24 at the upper and lower sides of one side A pair of porous panels 20a and 20b coupled to each other; 상기 흡음판넬(10)의 양측에 결속브라켓(24)을 통해 결합되는 한 쌍의 다공판넬(20a, 20b)을 양측면을 마감할 수 있도록 다공판넬(20a, 20b)의 모서리에 결합되는 모서리연결고정구(23)에 끼워져 다공판넬(20a, 20b)과 결합되며, 표면에는 상기 흡음판넬(10)의 흡음돌기(11)와 동일위치 마다 다수의 통공(31)이 형성되는 타공마감판(30a, 30b);으로 이루어진 것을 특징으로 하는 건축용 안전 방음도어.Corner connecting fixtures coupled to the edges of the porous panels 20a and 20b so as to close both sides of the pair of porous panels 20a and 20b coupled to both sides of the sound absorbing panel 10 through the binding bracket 24. Perforated panels (30a, 30b) are fitted to the porous panel (20a, 20b) is coupled to, and a plurality of through-holes 31 are formed at the same position as the sound absorbing projection (11) of the sound absorbing panel 10 on the surface Building safety soundproof door, characterized in that consisting of.
KR1020060067747A 2006-07-20 2006-07-20 A safe soundproofing door for buildings KR100684546B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107339058A (en) * 2016-04-29 2017-11-10 句容市后白镇福临门木门加工厂 A kind of compound sound insulation wooden door
KR102602515B1 (en) * 2022-12-24 2023-11-15 (주)휴먼씨엠건축사사무소 Interior doors for architectural use with excellent soundproofing

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JP2020025977A (en) * 2018-08-15 2020-02-20 日本製鉄株式会社 Cooling device of hot rolled steel sheet and cooling method of hot rolled steel sheet

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Publication number Priority date Publication date Assignee Title
JP2020025977A (en) * 2018-08-15 2020-02-20 日本製鉄株式会社 Cooling device of hot rolled steel sheet and cooling method of hot rolled steel sheet

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107339058A (en) * 2016-04-29 2017-11-10 句容市后白镇福临门木门加工厂 A kind of compound sound insulation wooden door
KR102602515B1 (en) * 2022-12-24 2023-11-15 (주)휴먼씨엠건축사사무소 Interior doors for architectural use with excellent soundproofing

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