JPS61103156U - - Google Patents
Info
- Publication number
- JPS61103156U JPS61103156U JP18921084U JP18921084U JPS61103156U JP S61103156 U JPS61103156 U JP S61103156U JP 18921084 U JP18921084 U JP 18921084U JP 18921084 U JP18921084 U JP 18921084U JP S61103156 U JPS61103156 U JP S61103156U
- Authority
- JP
- Japan
- Prior art keywords
- duct
- case
- stop arm
- protrusion
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009423 ventilation Methods 0.000 claims description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 4
- 230000000903 blocking effect Effects 0.000 claims 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Air-Flow Control Members (AREA)
Description
第１図はこの考案に係る防火ダンパー作動装置
の一実施例を示す防火ダンパーの開放状態部分断
面図、第２図はこの閉塞状態を示す要部部分断面
図、第３図及び第４図はこの要部説明断面図及び
要部斜視図である。
１…防火ダンパー作動装置、２…ダクト、３…
ばね、４…通風路、５…防火ダンパー、６…回動
軸、７…ストツプアーム、８…ケース、９…摺動
軸、１１…解除ばね、１３…ストツパー、１５…
ピン（突部）、１６…開口部、１８…形状記憶合
金製のばね。
Fig. 1 is a partial sectional view of a fire damper in an open state showing an embodiment of the fire damper actuating device according to this invention, Fig. 2 is a partial sectional view of main parts showing this closed state, and Figs. 3 and 4 are They are an explanatory sectional view and a perspective view of the main part. 1... Fire damper actuation device, 2... Duct, 3...
Spring, 4... Ventilation path, 5... Fire damper, 6... Rotating shaft, 7... Stop arm, 8... Case, 9... Sliding shaft, 11... Release spring, 13... Stopper, 15...
Pin (protrusion), 16...opening, 18...shape memory alloy spring.
Claims (1)
その通風路を閉塞する方向に附勢された板状の通
風路閉塞用防火ダンパーと、この防火ダンパーの
回動範囲外のダクトの内部からダクトの胴壁を貫
通してダクト外に開口するようダクトに取付けら
れた筒状ケースと、このケース内に摺動可能に収
納された摺動軸と、防火ダンパーの回動軸からダ
クト外に延出され前記摺動軸をダクト外の前記ケ
ースの端部開口から突出させたときにその突出部
に係合して防火ダンパーを通風路開放位置に係止
するストツプアームとを備えた防火ダンパー作動
装置において、 ケース内に摺動軸をストツプアーム側とは反対
方向に押圧し摺動軸とストツプアームとの係合を
解除しうる解除ばねを設けるとともに、ダクト内
の摺動軸に摺動軸とストツプアームとが係合した
状態において、ダクト内のケース筒壁に設けられ
た開口部からダクト内に突出する突部を設け、前
記開口部を該突部が摺動軸の摺動移動によつて摺
動軸とストツプアームとの係合が外れるまでケー
スの筒軸に沿つて移動しうるよう形成し、さらに
ダクト内のケース筒壁に前記突部に係合して摺動
軸をストツプアームと係合状態に係止するストツ
パー片を取付け、このストツパー片と摺動軸との
間の前記突部の周囲にダクト内の温度が所定温度
以上になつたときに、ストツパー片を突部から外
すよう押し上げる１以上の形状記憶合金製のばね
を配したことを特徴とする防火ダンパー作動装置
。[Scope of Claim for Utility Model Registration] A plate-shaped fire prevention damper for blocking the ventilation passage which is rotatably attached in the duct and biased in the direction of closing the ventilation passage by a spring, and the rotation of this fire prevention damper. A cylindrical case attached to the duct so as to penetrate the body wall of the duct from inside the duct and open to the outside of the duct, a sliding shaft slidably housed in this case, and a fire damper. A stop arm that extends from the rotating shaft to the outside of the duct and engages with the protrusion when the sliding shaft protrudes from the end opening of the case outside the duct to lock the fire damper in the ventilation passage open position. In a fire prevention damper actuating device equipped with When the sliding shaft and the stop arm are engaged with the shaft, a protrusion is provided that protrudes into the duct from an opening provided in the cylindrical wall of the case in the duct. The stop arm is formed so that it can move along the cylindrical axis of the case until the sliding shaft and the stop arm are disengaged by sliding movement, and further engages with the protrusion on the case cylindrical wall in the duct and slides. A stopper piece is installed to lock the shaft in engagement with the stop arm, and the stopper piece is installed around the protrusion between the stopper piece and the sliding shaft when the temperature inside the duct exceeds a predetermined temperature. A fire prevention damper actuating device comprising one or more springs made of a shape memory alloy that push up the springs to remove them from the protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18921084U JPH0223331Y2 (en) | 1984-12-13 | 1984-12-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18921084U JPH0223331Y2 (en) | 1984-12-13 | 1984-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61103156U true JPS61103156U (en) | 1986-07-01 |
| JPH0223331Y2 JPH0223331Y2 (en) | 1990-06-25 |
Family
ID=30746666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18921084U Expired JPH0223331Y2 (en) | 1984-12-13 | 1984-12-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0223331Y2 (en) |
-
1984
- 1984-12-13 JP JP18921084U patent/JPH0223331Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0223331Y2 (en) | 1990-06-25 |
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