KR20120049559A - Multipurpose fireproof shutter with function insulating heat - Google Patents

Multipurpose fireproof shutter with function insulating heat Download PDF

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Publication number
KR20120049559A
KR20120049559A KR1020100110873A KR20100110873A KR20120049559A KR 20120049559 A KR20120049559 A KR 20120049559A KR 1020100110873 A KR1020100110873 A KR 1020100110873A KR 20100110873 A KR20100110873 A KR 20100110873A KR 20120049559 A KR20120049559 A KR 20120049559A
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South Korea
Prior art keywords
heat shield
heat
fire
frame
shutter
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KR1020100110873A
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Korean (ko)
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KR101411604B1 (en
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장종복
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장종복
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors
    • 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
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • 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
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures

Abstract

PURPOSE: A multi-purpose fireproof shutter is provided to prevent the diffusion of fire by using various materials and to effectively block fire. CONSTITUTION: A multi-purpose fireproof shutter comprises a heat preventing frame(110) and a heat preventing object(120). In the heat preventing frame, an internal space is formed in the longitudinal direction. The heat preventing object is filled into the internal space of the heat preventing frame and intercepts heat. The heat preventing frame forms an insertion groove and an interception protrusion.

Description

차열 기능이 구비된 다용도 방화셔터{Multipurpose fireproof shutter with function insulating heat}Multipurpose fireproof shutter with function insulating heat

본 발명은 차열 기능이 구비된 다용도 방화셔터에 관한 것으로, 상세하게는 다양한 소재를 이용하여 화재의 확산을 방지함은 물론 차열 및 차연 효과를 향상시켜 화재를 효과적으로 차단 할 수 있도록 하는 차열 기능이 구비된 다용도 방화셔터에 관한 것이다.
The present invention relates to a multi-purpose fire prevention shutter equipped with a heat shielding function, and in particular, by using a variety of materials to prevent the spread of fire as well as to improve the heat shielding and shielding effect is provided with a heat shielding function to effectively block the fire. It is related with the general purpose fire shutter.

일반적으로 건축용 방화셔터나 방화문 또는 방화벽은 화재의 고열로부터 안전하며, 화염의 확산방지와 유독가스가 발생되지 않는 특성을 갖추어야 한다.In general, building fire shutters, fire doors or firewalls should be safe from the high temperatures of fire, and should be characterized by the prevention of flame spread and the generation of toxic gases.

여기서 방화셔터나 방화문의 경우에는 현재 국내에서 방화문으로 널리 사용되는 대표적인 건축용 자재는 스틸 플레이트로 만들어진 철재 슬레이트나 철재 도어가 대부분 사용되고 있으나, 이들 제품은 스틸 플레이트로 이루어진 만큼 화염과 유독가스를 차단할 수는 있으나, 차열성능이 부족하다.Here, in the case of fire shutters or fire doors, the most widely used construction materials for fire doors in Korea are mostly steel slats made of steel plates or steel doors. However, the thermal insulation performance is insufficient.

이에 따라 재료의 다양한 조성 변화를 통해 여러 종류의 건축용 마감 및 내장재료가 갖추어야 할 필요?충분 조건을 갖추지 못하고 있으므로 그 사용에 제한을 받는 등 단편적인 특성만을 가진 자재로서 현재 사용되고 있다.As a result, various kinds of building finishes and interior materials are not required to meet the necessary and sufficient conditions through various compositional changes. Therefore, they are currently used as materials having only fragmentary characteristics such as being limited in use.

이와 같은 단점을 보완하기 위하여 난연성이 있는 자재를 철재문 위에 부착하려고 시도는 하고 있으나, 이 또한 작업성이 쉽지 않아 완전한 방화기능을 갖추기에 많은 어려움이 발생되었다.In order to compensate for the above disadvantages, there is an attempt to attach a flame retardant material on the steel door, but this also has a lot of difficulties to have a complete fire protection function is not easy to work.

현행 건축법과 소방법에는 건축물 내부에 사용되는 마감 및 내장재료는 불연?준불연?난연 재료를 사용하도록 규제하고 있으며, 화재 확산방지와 인명보호를 위해 일정규모 이상의 건물은 방화구획을 하도록 하고 있다.The current building and fire laws stipulate the use of non-combustible, semi-non-combustible and flame-retardant materials used in the interior of buildings, and to prevent fire spreading and to protect lives, oversized buildings are to be arson-blocked.

이러한 법적 규제에 따른 기준과 성능 시험방법은 마감 및 내장재료의 경우 한국 산업표준규격 KS F2271(건축물의 난연성능 시험방법)의 성능기준에 따라 난연 1급(불연재료), 난연 2급(준불연재료), 난연 3급(난연재료)을 만족하도록 정하고 있다.The standards and performance test methods according to these legal regulations are flame retardant class 1 (non-flammable materials) and flame retardant class 2 (semi-non-flammable) according to the performance standards of Korean Industrial Standard KS F2271 Materials) and flame retardant grade 3 (flame retardant materials).

이는 우리나라 뿐만 아니라 전세계 대부분의 나라가 채택하고 있는 규정으로 내용에 따라 약간의 차이는 있을 수 있으나, 성능기준에 적합한 것을 사용하도록 하는 규정은 거의 같다고 할 수 있다. This is a regulation adopted by most countries around the world as well as Korea, but there may be some differences depending on the contents, but the regulations to use the one that meets the performance standards are almost the same.

이는 화재에 대한 대비로 화염의 확산방지와 연소시 발생하는 유독가스로부터 인명과 재산의 안전을 확보하기 위한 것이기 때문이다.This is to prevent the spread of flames and to protect the safety of life and property from toxic gases generated during combustion in preparation for fire.

그러나 이러한 종래의 방화셔터나 방화문 또는 방화벽 등은 차열성능이 극히 떨어질 뿐만 아니라 설치공간의 한정으로 공간 확보의 어려움이 발생하였다.
However, such a conventional fire shutter, a fire door or a firewall is not only extremely low heat shielding performance but also limited in the installation space it is difficult to secure space.

따라서 본 발명의 주 목적은 화재의 확산을 방지함은 물론 차열 및 차연 효율을 향상시켜 화재를 효과적으로 차단 할 수 있도록 하는 차열 기능이 구비된 다용도 방화셔터를 제공하는 데 있다.Therefore, the main object of the present invention is to provide a versatile fire protection shutter having a heat shield function that can effectively block the fire by preventing the spread of the fire as well as improving the heat shield and the smoke efficiency.

본 발명의 다른 목적은 권회시켜 보관할 수 있도록 하여 최소의 공간에 설치할 수 있도록 하므로 필요에 따라 방화셔터나 방화문 또는 방화벽으로 다양하게 사용할 수 있도록 하는 차열 기능이 구비된 다용도 방화셔터를 제공하는 데 있다.
Another object of the present invention is to provide a multi-purpose fire shutter equipped with a heat shield function that can be used as a fire shutter or a fire door or a firewall as needed so that it can be installed in a minimal space by winding and storing.

이러한 목적을 달성하기 위하여 본 발명의 차열 기능이 구비된 다용도 방화셔터는 상하 순차적으로 연결하여 절곡되도록 다수개 결합하되 좌우 길이 방향으로 내부공간을 형성한 차열프레임과, 상기 차열프레임의 내부공간에 충진하여 고열을 차단하는 차열체, 및 상기 차열프레임 사이마다 각각 결합하여 각각의 연접된 차열체 사이의 틈새를 차단하도록 하는 차단시트로 구성함을 그 기술적 구성상 기본 특징으로 한다.
In order to achieve the above object, the multi-purpose fire prevention shutter equipped with the heat shielding function of the present invention is coupled to a plurality of heat sinks to be bent by sequentially connecting up and down, and a heat shield frame is formed in the left and right longitudinal direction, and filled in the inner space of the heat shield frame. The heat shield to block the high heat, and each of the heat shield frame is coupled to each of the blocking sheet to block the gap between each connected heat shield is characterized in the technical configuration.

이러한 본 발명의 차열 기능이 구비된 다용도 방화셔터는 차열프레임의 내부공간에 차열체를 충진하여 형성하므로 화재를 차단함은 물론 화재로 인한 고열을 효과적으로 차열하여 화재의 확산을 방지할 뿐만 아니라 각각의 차열프레임의 상하를 연결하여 원활하게 절곡되게 함과 동시에 상하단이 상호 겹쳐지거나 끼워지도록 형성하여 틈새로 화재가 확산되거나 고열이 전도되는 것을 방지하도록 하는 효과가 있는 것이다.
The multi-purpose fire shutter with the heat shielding function of the present invention is formed by filling a heat shield in the inner space of the heat shielding frame to block the fire and effectively prevent the spread of fire by effectively shielding the high heat caused by the fire. By connecting the top and bottom of the heat shield frame to bend smoothly and at the same time the upper and lower ends are formed so as to overlap or sandwich each other is to prevent the spread of fire or conduction of high heat to the gap.

도 1 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터를 나타낸 정면도.
도 2 은 본 발명에 따른 비상탈출문은 형성한 차열 기능이 구비된 다용도 방화셔터를 나타낸 정면도.
도 3 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 일부를 나타낸 분해사시도.
도 4 는 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 결합 상태를 나타낸 측면도.
도 5 는 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 작동 상태를 나타낸 측면도.
도 6 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 다른 실시 예를 나타낸 분해사시도.
도 7 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 다른 실시 예를 나타낸 정면도.
도 8 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 다른 실시 예를 나타낸 단면도.
도 9 는 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 다른 실시 예를 나타낸 분해사시도.
도 10 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 다른 실시 예를 나타낸 단면도.
도 11 은 본 발명에 따른 차열 기능이 구비된 다용도 방화셔터의 다른 실시 예를 나타낸 분해사시도.1 is a front view showing a multi-purpose fire prevention shutter equipped with a heat shielding function according to the present invention.
Figure 2 is an emergency exit door according to the present invention is a front view showing a multi-purpose fire shutter with a heat shield function formed.
Figure 3 is an exploded perspective view showing a part of the multi-purpose fire prevention shutter equipped with a heat shielding function according to the present invention.
Figure 4 is a side view showing a combined state of the multi-purpose fire shutter with a heat shield function according to the present invention.
Figure 5 is a side view showing the operating state of the multi-purpose fire shutter equipped with a heat shield function according to the present invention.
Figure 6 is an exploded perspective view showing another embodiment of a multi-purpose fire shutter with a heat shield function according to the present invention.
Figure 7 is a front view showing another embodiment of a multi-purpose fire shutter with a heat shield function according to the present invention.
Figure 8 is a cross-sectional view showing another embodiment of the multi-purpose fire shutter equipped with a heat shielding function according to the present invention.
Figure 9 is an exploded perspective view showing another embodiment of a multi-purpose fire shutter with a heat shield function according to the present invention.
10 is a cross-sectional view showing another embodiment of the multi-purpose fire shutter equipped with a heat shielding function according to the present invention.
Figure 11 is an exploded perspective view showing another embodiment of a multi-purpose fire shutter with a heat shield function according to the present invention.

이하, 첨부된 도면을 참조하면서 본 발명의 실시 예를 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

도 1 내지 도 11 에 나타낸 바와 같이, 본 발명의 차열 기능이 구비된 다용도 방화셔터(100)는 상하 순차적으로 연결하여 절곡되도록 다수개 결합하되 좌우 길이 방향으로 내부공간을 형성한 차열프레임(110)과, 상기 차열프레임(110)의 내부공간에 충진하여 고열을 차단하는 차열체(120), 및 상기 차열프레임(110) 사이마다 각각 결합하여 각각의 연접된 차열체(110)사이의 틈새를 차단하도록 하는 차단시트(130)로 구성한다.As shown in Figures 1 to 11, the multi-purpose fire prevention shutter with a heat shielding function of the present invention is coupled to a plurality of plural to be bent by sequentially connecting up and down, but the heat shield frame 110 formed the inner space in the left and right longitudinal direction And a heat shield 120 filling the internal space of the heat shield frame 110 to block high heat, and a gap between each of the heat shield frames 110 connected to each other between the heat shield frames 110. It consists of a blocking sheet 130 to be.

상기 차열프레임(110)은 상하에 상호 대응하여 일치되는 겹침편(111)을 각각 형성한다.The heat shielding frame 110 forms overlapping pieces 111 that correspond to each other in the vertical direction.

여기서 겹침편(111)의 어느 하나의 단부와 대응되는 턱부분에 결합용 연결고리(112)를 상하로 결합된 상태에서 차열프레임(110) 각각이 절곡될 수 있도록 한다.Here, each of the heat shielding frames 110 may be bent in a state in which the coupling ring 112 for coupling to the jaw portion corresponding to one end of the overlapping piece 111 is vertically coupled.

한편 차열프레임(110)은 상하단 중앙에 상호 대응하는 끼움홈(113)과 차단돌부(114)를 각각 형성하여 연접되는 차열프레임(110)의 틈새를 중첩시켜 차단할 수도 있다.On the other hand, the heat shield frame 110 may be formed by overlapping the gap of the heat shield frame 110 connected to each other by forming the fitting groove 113 and the blocking protrusion 114 corresponding to the upper and lower centers, respectively.

상기 차열체(120)는 그 재질을 한정하는 것이 아니며 다양한 내화?불연?난연?단열재료 또는 이들의 혼합물 등을 사용할 수 있다.The heat shield 120 is not limited to the material thereof, and various fire-resistant, non-flammable, flame-retardant, insulating materials or mixtures thereof may be used.

나아가, 차열체(120)는 좌우 측단을 차단하는 통상의 수단(나타내지 않음)을 구비한다.Furthermore, the heat shield 120 is provided with the usual means (not shown) which blocks the left and right side ends.

상기 차단시트(130)는 다단으로 접어지도록 하되 차열프레임(110)의 연결고리(112)가 형성되지 겹침편(111)의 단부와 대응되는 턱부분에 부착하여 그 사이에서 접히거나 펼쳐지도록 한다.The blocking sheet 130 is to be folded in multiple stages, but the connection ring 112 of the heat shielding frame 110 is not formed so as to be attached to the jaw portion corresponding to the end of the overlapping piece 111 to be folded or unrolled therebetween.

여기서 차단시트(130)에는 결합부(131)를 형성하여 방화셔터(100)가 겹침편(111)의 단부와 대응되는 턱부분에서 결합하되 차단시트(130)가 접히면서 가압되어 완벽하게 틈새를 막아 차열 및 방화를 기능을 원활하게 수행할 수 있도록 한다.Here, the blocking sheet 130 forms a coupling part 131 so that the fire prevention shutter 100 is coupled at the jaw portion corresponding to the end of the overlapping piece 111, but the blocking sheet 130 is folded and pressurized to perfectly open the gap. It prevents heat and fire prevention function smoothly.

한편 이러한 방화셔터(100)는 설치위치의 천청 등에 보관하우징(10)을 형성하고 좌우에는 가이드프레임(20)을 형성하며 차열프레임(110)의 하단에는 하부프레임(30)을 형성한다.On the other hand, such a fire shutter 100 forms a housing 10, such as the ceiling of the installation position, the guide frame 20 on the left and right, and the lower frame 30 is formed at the bottom of the heat shield frame 110.

더불어 방화셔터(100)에는 비상탈출문(101)을 형성하여 설치할 수도 있다.In addition, the fire shutter 100 may be installed by forming an emergency exit door (101).

이러한 본 발명은 차열프레임(110)에 내부공간을 형성되고 그 내부공간에 차열체(120)를 충진하여 형성하므로 화재 등에 의한 고열을 효과적으로 차단하여 화재의 확산을 방지한다.The present invention forms an inner space in the heat shield frame 110 and is formed by filling the heat shield 120 in the inner space to effectively block the high heat caused by the fire to prevent the spread of the fire.

더욱이, 차열프레임(110)의 상하를 절곡되게 함과 동시에 상하단이 상호 겹쳐지거나 끼워지도록 형성하므로 화염을 더욱 효과적으로 차단할 뿐만 아니라 차단시트(130)의 결합으로 화재 차단 효과는 더욱 더 증대되는 것이다.Furthermore, the upper and lower ends of the heat shield frame 110 are bent at the same time, and the upper and lower ends are overlapped or fitted to each other to more effectively block the flame, and the fire blocking effect is further increased by the combination of the blocking sheet 130.

한편 이러한 차열프레임(110)은 차열체(120)가 적정 수준의 강도를 유지하는 경우에는 좌우에 일부만을 형성하여 차열체(120)가 노출된 상태로 형성할 수도 있다.
On the other hand, when the heat shield 120 maintains an appropriate level of strength, the heat shield frame 110 may be formed in a state in which the heat shield 120 is exposed by forming only a part of the heat shield 120.

10 : 보관하우징 20 : 가이드프레임
30 : 하부프레임 100 : 방화셔터
101 : 비상탈출문 110 : 차열프레임
111 : 겹침편 112 : 연결고리
113 : 끼움홈 114 : 차단돌부
120 : 차열체 130 : 차단시트
131 : 가이드돌출부10: storage housing 20: guide frame
30: lower frame 100: fire prevention shutter
101: emergency exit door 110: heat shield frame
111: overlapping part 112: connecting ring
113: fitting groove 114: blocking protrusion
120: heat shield 130: blocking sheet
131: guide protrusion

Claims (4)

상하 순차적으로 연결하여 절곡되도록 다수개 결합하되 좌우 길이 방향으로 내부공간을 형성한 차열프레임(110), 및
상기 차열프레임(110)의 내부공간에 충진하여 고열을 차단하는 차열체(120)로 구성한 것을 특징으로 하는 차열 기능이 구비된 다용도 방화셔터.
A plurality of heat shield frames 110 are coupled to each other so as to be bent and sequentially connected to each other to form internal spaces in left and right length directions.
Multi-purpose fire shutter equipped with a heat shield function, characterized in that configured as a heat shield 120 to block the high heat by filling the inner space of the heat shield frame (110).
제 1 항에 있어서,
상기 차열프레임(110)은 상하단부에 상호 대응하여 일치되는 겹침편(111)을 각각 형성하되 겹침편(111)내부에 공간을 형성하여 차열체(120)를 충진하고 겹침편(111)의 어느 하나의 단부와 대응되는 턱부분에 결합용 연결고리(112)를 형성하여 구성한 것을 특징으로 하는 차열 기능이 구비된 다용도 방화셔터.
The method of claim 1,
The heat shielding frame 110 forms overlapping pieces 111 that correspond to each other at upper and lower ends, respectively, but forms a space in the overlapping pieces 111 to fill the heat shielding body 120, and any of the overlapping pieces 111. Multi-purpose fire shutter with a heat shield function, characterized in that formed by forming a connecting ring 112 for coupling in the jaw portion corresponding to one end.
제 1 항에 있어서,
상기 차열프레임(110)은 상하단부에 상호 대응하는 끼움홈(113)과 차단돌부(114)를 형성하되 끼움홈(113)과 차단돌부(114) 내부에 공간을 형성하여 차열체(120)를 충진하고 상하단부의 일측으로 결합용 연결고리(112)를 각각 형성하여 구성한 것을 특징으로 하는 차열 기능이 구비된 다용도 방화셔터.
The method of claim 1,
The heat shielding frame 110 forms a fitting groove 113 and a blocking protrusion 114 corresponding to the upper and lower ends, but forms a space in the fitting groove 113 and the blocking protrusion 114 to form the heat shield 120. Multi-purpose fire shutter equipped with a heat shield function, characterized in that the filling and forming the connecting ring 112 for coupling to one side of the upper and lower ends, respectively.
제 1 항 내지 제 3 항에 있어서,
상기 차열프레임(110) 사이마다 결합하여 연접된 차열체(110)사이의 틈새를 차단하도록 하는 차단시트(130)를 더 포함하여 구성한 것을 특징으로 하는 차열 기능이 구비된 다용도 방화셔터.4. The method according to any one of claims 1 to 3,
Multipurpose fire shutter equipped with a heat shield function, characterized in that it further comprises a blocking sheet 130 for blocking the gap between the heat shield body 110 connected to each other coupled between the heat shield frame (110).
KR1020100110873A 2010-11-09 2010-11-09 Multipurpose fireproof shutter with function insulating heat KR101411604B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101477088B1 (en) * 2013-12-06 2014-12-29 진경화 Fireproof shutter having function for detecting fire situation of the other side compartment
KR20210042714A (en) * 2019-10-10 2021-04-20 (주)진남엔지니어링 Double Shielded, Multi Function Shutter
KR102324413B1 (en) * 2021-04-30 2021-11-09 강충섭 Heat shielding fire shutter
KR20220141446A (en) * 2021-04-13 2022-10-20 주식회사 태석이엔지 Fireproof shutter typed stacking

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KR102265370B1 (en) * 2019-10-15 2021-06-15 강성배 Fireproof shutter that opens and closes without power

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Publication number Priority date Publication date Assignee Title
JP3728070B2 (en) * 1997-08-30 2005-12-21 東洋シヤッター株式会社 Shutter device with seat door
KR20080109160A (en) * 2007-06-12 2008-12-17 임동현 Fireproof shutter for elevator
KR20090090714A (en) * 2008-02-22 2009-08-26 남기호 A fireproof shutter
KR100982752B1 (en) 2009-12-17 2010-09-20 송희범 Method for manufacturing fire door and fire door produced by the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101477088B1 (en) * 2013-12-06 2014-12-29 진경화 Fireproof shutter having function for detecting fire situation of the other side compartment
KR20210042714A (en) * 2019-10-10 2021-04-20 (주)진남엔지니어링 Double Shielded, Multi Function Shutter
KR20220141446A (en) * 2021-04-13 2022-10-20 주식회사 태석이엔지 Fireproof shutter typed stacking
KR102324413B1 (en) * 2021-04-30 2021-11-09 강충섭 Heat shielding fire shutter

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