A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
NORMALLY-OPENED FIRE DOOR
PROBLEM TO BE SOLVED: To provide a normally-opened fire door for making it possible to smoothly perform door closing at the time of fire occurrence.SOLUTION: A normally-opened fire door 10 includes: a decompression aperture 12; a decompression door 14 attached so as to close the decompression aperture 12, the decompression door made to be capable of rotating around a second axial line D in parallel with a pivot (first axial line) C of the normally-opened fire door; and a decompression door closer 31 for making the decompression door 14 be at a door closing position. The second axial line D is located at a position where when the normally-opened fire door 10 pivotally moves around the first axial line C to perform door closing, an angular moment around the second axial line D generated at the decompression door 14 following movement of door closing, the angular moment being equal to or larger than a predetermined value, rotates the decompression door 14 against energization force of the decompression door closer 31 to open the decompression aperture. When the normally-opened fire door 10 stops at the door closing position, the decompression door 31 is closed by the decompression door closer 31.SELECTED DRAWING: Figure 2
【課題】出火に際して円滑に閉扉できる常開防火扉を提供する。【解決手段】この常開防火扉１０は、減圧用開口１２と、減圧用開口１２を閉じるように取り付けられ、常開防火扉の枢軸（第１軸線）Ｃに平行な第２軸線Ｄの周りで回動可能とされた減圧用扉１４と、減圧用扉１４を閉扉位置とする減圧用扉クローザ３１とを有する。第２軸線Ｄは、常開防火扉１０が第１軸線Ｃを中心に枢動して閉扉するときに閉扉の動きに伴い減圧用扉１４に生じる第２軸線Ｄの周りでの所定値以上の回転モーメントにより減圧用扉１４が減圧用扉クローザ３１の付勢力に抗して回動し該減圧用開口を開放する位置とされている。常開防火扉１０が閉扉位置に停止すると、減圧用扉３１は減圧用扉クローザ３１により閉扉される。【選択図】図２
NORMALLY-OPENED FIRE DOOR
PROBLEM TO BE SOLVED: To provide a normally-opened fire door for making it possible to smoothly perform door closing at the time of fire occurrence.SOLUTION: A normally-opened fire door 10 includes: a decompression aperture 12; a decompression door 14 attached so as to close the decompression aperture 12, the decompression door made to be capable of rotating around a second axial line D in parallel with a pivot (first axial line) C of the normally-opened fire door; and a decompression door closer 31 for making the decompression door 14 be at a door closing position. The second axial line D is located at a position where when the normally-opened fire door 10 pivotally moves around the first axial line C to perform door closing, an angular moment around the second axial line D generated at the decompression door 14 following movement of door closing, the angular moment being equal to or larger than a predetermined value, rotates the decompression door 14 against energization force of the decompression door closer 31 to open the decompression aperture. When the normally-opened fire door 10 stops at the door closing position, the decompression door 31 is closed by the decompression door closer 31.SELECTED DRAWING: Figure 2
【課題】出火に際して円滑に閉扉できる常開防火扉を提供する。【解決手段】この常開防火扉１０は、減圧用開口１２と、減圧用開口１２を閉じるように取り付けられ、常開防火扉の枢軸（第１軸線）Ｃに平行な第２軸線Ｄの周りで回動可能とされた減圧用扉１４と、減圧用扉１４を閉扉位置とする減圧用扉クローザ３１とを有する。第２軸線Ｄは、常開防火扉１０が第１軸線Ｃを中心に枢動して閉扉するときに閉扉の動きに伴い減圧用扉１４に生じる第２軸線Ｄの周りでの所定値以上の回転モーメントにより減圧用扉１４が減圧用扉クローザ３１の付勢力に抗して回動し該減圧用開口を開放する位置とされている。常開防火扉１０が閉扉位置に停止すると、減圧用扉３１は減圧用扉クローザ３１により閉扉される。【選択図】図２
NORMALLY-OPENED FIRE DOOR
常開防火扉
KONNO MASAMI (author) / KURUSU TAKAYUKI (author)
2018-01-18
Patent
Electronic Resource
Japanese
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