JPH046770Y2 - - Google Patents
Info
- Publication number
- JPH046770Y2 JPH046770Y2 JP1984068139U JP6813984U JPH046770Y2 JP H046770 Y2 JPH046770 Y2 JP H046770Y2 JP 1984068139 U JP1984068139 U JP 1984068139U JP 6813984 U JP6813984 U JP 6813984U JP H046770 Y2 JPH046770 Y2 JP H046770Y2
- Authority
- JP
- Japan
- Prior art keywords
- damper plate
- distance
- free end
- spindle
- damper
- 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.)
- Expired
Links
Landscapes
- Air-Flow Control Members (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
この考案は室内空気の排出用ダクトに設けた常
開ダンパーを、火災発生時にはその常開機構にお
ける温度フユーズの溶断により自動的に上記ダク
トを閉塞する位置に回動させるようにしたもので
ある。[Detailed description of the invention] [Technical field of the invention] This invention uses a normally open damper installed in a duct for discharging indoor air, and when a fire occurs, the duct is automatically closed by blowing out the temperature fuse in the normally open mechanism. It is designed so that it can be rotated to the desired position.
第１図および第２図は実開昭56−53140号公報
に示された従来のダンパー装置で、図において、
１ａは正面の本体ケース、１ｂは背面の本体枠、
２は内装のダンパー板、３は室内空気の排出用ダ
クト、４は本体枠に開設したダクト連絡口、５
ａ，５ｂは温度フユーズ保持具、６は上記ダンパ
ー板２の自由端を載置する保持カム、７は上記保
持具間に張架された温度フユーズである。
Figures 1 and 2 show a conventional damper device disclosed in Japanese Utility Model Application Publication No. 56-53140.
1a is the main body case on the front, 1b is the main body frame on the back,
2 is an interior damper plate, 3 is a duct for discharging indoor air, 4 is a duct connection hole opened in the main body frame, 5
Numerals a and 5b are temperature fuse holders, 6 is a holding cam on which the free end of the damper plate 2 is placed, and 7 is a temperature fuse stretched between the holders.
上記構成において、通常は保持カム６への自由
端の引掛りにより、ダンパー板２は第１図の開放
状態に維持されているが、火災等によりダクト３
内に熱気流が生じた際は、上記常開機構における
温度フユーズ７が溶断し、保持カム６がその支軸
１２を中心に回動し、ためにダンパー板２の自由
端が外れ、その支軸１３を中心とするこのダンパ
ー板の回動により上記ダクト連絡口４が第２図の
状態に閉塞されるようになつている。 In the above configuration, the damper plate 2 is normally maintained in the open state shown in FIG. 1 by the engagement of the free end with the holding cam 6, but due to a fire
When a hot air flow is generated inside the normally open mechanism, the temperature fuse 7 in the normally open mechanism blows out, and the holding cam 6 rotates around its support shaft 12, causing the free end of the damper plate 2 to come off and release its support. By rotating the damper plate about the shaft 13, the duct communication port 4 is closed in the state shown in FIG. 2.
すなわち、従来の防火ダンパー装置では温度フ
ユーズ７を張架した各保持具５ａ，５ｂの他端は
本体枠１ｂの内側上端縁と保持カム６に引掛けら
れ、ダンパー板２とほぼ平行状態に張架されてお
り、ために使用されるダンパー板に対応して、そ
の時の各保持具が大形になるという欠点があつ
た。 That is, in the conventional fire prevention damper device, the other end of each holder 5a, 5b, on which the temperature fuse 7 is stretched, is hooked on the inner upper edge of the main body frame 1b and the holding cam 6, and is stretched almost parallel to the damper plate 2. The disadvantage is that each holder is large in size to accommodate the damper plates used.
この考案は上記従来のものの欠点を除去するよ
うになされたもので、要は温度フユーズの保持具
の一方に抗伸ばねを使用し、かつ、これをダンパ
ー板それ自体の自由端側に引掛けるようにしたも
のである。
This invention was made to eliminate the drawbacks of the conventional ones described above, and the key point is to use an anti-stretch spring on one side of the temperature fuse holder, and to hook this spring on the free end side of the damper plate itself. This is how it was done.
以下、第３図および第４図で示すこの考案の防
火ダンパー装置の一実施例について説明する。
An embodiment of the fire damper device of this invention shown in FIGS. 3 and 4 will be described below.
すなわち、第１図のものと同一または相当個所
は同一符号で示しているが、この考案のダンパー
板２のダクト側には係止突片１４を設けると共
に、温度フユーズ７を保持する抗伸ばね１１の他
端を上記係止突片１４に引掛け、この抗伸ばね１
１の緊縮力を利用して上記ダンパー板２の自由端
２ａを、保持カム６の係止端６ａにより本体ケー
ス１ａに圧接させた状態でダンパー板２を第３図
の解放状態に保持している点に特徴を有するもの
である。 That is, the same or corresponding parts as those in FIG. 11 is hooked on the locking protrusion 14, and this anti-stretch spring 1 is
1, the damper plate 2 is held in the released state as shown in FIG. It is characterized by the fact that it is
なお、この際ダンパー板２の支軸１３から上記
係止突片１４までの距離L2は、支軸１３からダ
ンパー板の自由端２ａまでの距離L1の1/2より大
きく設定され、また保持カム６の支軸１２からそ
の自由端６ｂまでの距離L4は、この支軸１２か
ら上記係止端６ａまでの距離L3より大きくなる
ように設定され、これらにより上記抗伸ばね１１
の緊縮力がダンパー板２の自由端２ａに効果的に
作用するように考慮されているものである。すな
わちダンパ板２のばたつきを押えるために、その
自由端２ａをケース１ａ内面に確実に圧接する必
要があり、保持カム６の係止端６ａがどれ程強く
ダンパー板を押えられるかによるが、一方温度ヒ
ユーズ７にはあまり強い荷重をかけると経年変化
によりクリープ破壊を起こすという問題がある。 At this time, the distance L 2 from the support shaft 13 of the damper plate 2 to the locking protrusion 14 is set to be larger than 1/2 of the distance L 1 from the support shaft 13 to the free end 2a of the damper plate, and The distance L 4 from the support shaft 12 of the holding cam 6 to its free end 6b is set to be larger than the distance L 3 from this support shaft 12 to the locking end 6a.
This is designed so that the tightening force of the damper plate 2 is effectively applied to the free end 2a of the damper plate 2. That is, in order to suppress the flapping of the damper plate 2, it is necessary to firmly press its free end 2a against the inner surface of the case 1a. There is a problem in that if too strong a load is applied to the temperature fuse 7, creep failure will occur due to aging.
このようにヒユーズの寿命を長くし、かつ確実
にダンパ板のばたつきを押えるためには、距離
L3をできるだけ小さくすると、ヒユーズには一
定以上の力を加えずにダンパ板を押えることに有
効である。 In order to extend the life of the fuse and reliably suppress the flapping of the damper plate, it is necessary to
Making L 3 as small as possible is effective in holding down the damper plate without applying more than a certain amount of force to the fuse.
さらに距離L3とL4の比が大きく、かつ距離Ｌ
１1とＬ２2の比が小さいほど常開機構を小形化で
きる。 Furthermore, the ratio of distance L 3 to L 4 is large, and distance L
The smaller the ratio between 1 1 and L2 2 is, the more compact the normally open mechanism can be.
この第３図の状態から火災等により、温度フユ
ーズ７が溶断すると保持カム６が下方に回動し、
これから外れたダンパー板２は自重により第４図
の状態に回動降下してダクト連絡口４を閉塞し、
また保持カム６は他方の保持具５ａと共に、支軸
１２により垂下状態に保持されるものである。 If the temperature fuse 7 blows out due to a fire or the like in the state shown in FIG. 3, the holding cam 6 rotates downward.
The damper plate 2 that has come off from this rotates down to the state shown in Fig. 4 due to its own weight and closes the duct communication port 4.
Further, the holding cam 6 is held in a hanging state by a support shaft 12 together with the other holding tool 5a.
以上は、温度フユーズを抗伸ばねと保持具間に
張架した場合について説明したが、抗伸ばねを温
度フユーズの双方に使用してもよく、また保持具
を使用せずに温度フユーズの一端を直接保持カム
の自由端に引掛けてもよい。 The above explanation deals with the case where the temperature fuse is stretched between the anti-stretch spring and the holder, but the anti-expansion spring may be used for both of the temperature fuses, or one end of the temperature fuse may be used without using the holder. may be hooked directly onto the free end of the retaining cam.
この考案の防火ダンパー装置は以上のように構
成しているので、ダンパー板の保持カムを含めそ
の常開機構をダンパー板の自由端側に小形にまと
めて設けることができるばかりでなく、抗伸ばね
の効果的作用により、排気時におけるダンパー板
のばたつき現象を押え、しかも温度ヒユーズの寿
命を長くすることが可能になるという利点も有す
るものである。
Since the fire prevention damper device of this invention is constructed as described above, not only can the normally open mechanism including the holding cam of the damper plate be provided in a compact manner on the free end side of the damper plate, but also it can resist stretching. The effective action of the spring also has the advantage of suppressing the flapping phenomenon of the damper plate during exhaust, and making it possible to extend the life of the temperature fuse.
第１図および第２図は従来の防火ダンパー装置
を示す側断面図、第３図および第４図はこの考案
の防火ダンパー装置の一実施例を示す側断面図で
ある。
なお、図中、１ａは本体ケース、２はダンパー
板、２ａはその自由端、３は排気用ダクト、６は
保持カム、６ａはその係止端、６ｂは自由端、７
は温度フユーズ、１１は抗伸ばね、１２，１３は
支軸、１４は係止突片を示す。
その他、図中、同一符号は同一または相当部分
を示すものとする。
1 and 2 are side sectional views showing a conventional fire prevention damper device, and FIGS. 3 and 4 are side sectional views showing one embodiment of the fire prevention damper device of the present invention. In the figure, 1a is the main body case, 2 is the damper plate, 2a is its free end, 3 is the exhaust duct, 6 is the holding cam, 6a is the locking end, 6b is the free end, and 7
11 is a temperature fuse, 11 is an anti-stretch spring, 12 and 13 are support shafts, and 14 is a locking protrusion. In other figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
するダンパー板と、このダンパー板枢支側と対
向する正面本体ケースの近傍に設けられた支軸
に回動可能に支承された保持カムとを備え、上
記ダンパー板のダクト側の面に設けられた係止
部と上記保持カムの自由端間に、所定温度で溶
断する温度ヒユーズおよびこれと一連の抗伸ば
ねをこの抗伸ばねの緊縮状態に張架させ、上記
ダンパー板の開放状態で、上記抗伸ばねによる
上記保持カムの回転力により上記保持カムの係
止端が、上記保持カムの支軸に隣接した位置で
上記ダンパー板の自由端側を上記正面本体ケー
スの内面に圧接させるよう構成したことを特徴
とする防火ダンパー装置。 (2) 上記ダンパー板の支軸からこのダンパー板に
設けた係止部までの距離を、上記ダンパー板の
支軸からその自由端側までの距離の1/2より大
きく、かつまた上記保持カムの支軸からその自
由端までの距離は、この支軸から係止端までの
距離よりも大きくなるように設定した実用新案
登録請求の範囲第１項記載の防火ダンパー装
置。[Scope of Claim for Utility Model Registration] (1) A damper plate whose one side is pivoted to the body frame and opens and closes the exhaust duct, and a support shaft provided near the front body case opposite to the damper plate pivot side. a holding cam rotatably supported, and a temperature fuse that melts at a predetermined temperature and a series of When the anti-expansion spring is tensioned and the damper plate is in the open state, the locking end of the retaining cam is rotated by the rotational force of the retaining cam caused by the anti-expansion spring. A fire prevention damper device characterized in that the free end side of the damper plate is brought into pressure contact with the inner surface of the front body case at a position adjacent to the shaft. (2) The distance from the spindle of the damper plate to the locking part provided on the damper plate is greater than 1/2 of the distance from the spindle of the damper plate to its free end, and the holding cam The fire prevention damper device according to claim 1, wherein the distance from the spindle to the free end is set to be greater than the distance from the spindle to the locking end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6813984U JPS60180455U (en) | 1984-05-10 | 1984-05-10 | Fire damper device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6813984U JPS60180455U (en) | 1984-05-10 | 1984-05-10 | Fire damper device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60180455U JPS60180455U (en) | 1985-11-30 |
| JPH046770Y2 true JPH046770Y2 (en) | 1992-02-24 |
Family
ID=30602619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6813984U Granted JPS60180455U (en) | 1984-05-10 | 1984-05-10 | Fire damper device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60180455U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2646955B2 (en) * | 1993-05-12 | 1997-08-27 | 鹿島建設株式会社 | Entrance door with fire damper for apartment house |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133097U (en) * | 1974-08-30 | 1976-03-11 | ||
| JPS5851533U (en) * | 1981-10-05 | 1983-04-07 | 株式会社ユ−シン | Assembly structure of heart cam type switch |
-
1984
- 1984-05-10 JP JP6813984U patent/JPS60180455U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60180455U (en) | 1985-11-30 |
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