JPS63168735U - - Google Patents
Info
- Publication number
- JPS63168735U JPS63168735U JP5952287U JP5952287U JPS63168735U JP S63168735 U JPS63168735 U JP S63168735U JP 5952287 U JP5952287 U JP 5952287U JP 5952287 U JP5952287 U JP 5952287U JP S63168735 U JPS63168735 U JP S63168735U
- Authority
- JP
- Japan
- Prior art keywords
- damper plate
- ventilation passage
- locking piece
- closes
- cover
- 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.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
Description
第１図はこの考案の防火形ウエザーカバーの一
実施例を示す垂直断面図、第２図は従来のウエザ
ーカバーを示す同様の垂直断面図である。
なお図中３はカバー本体、４はダンパープレー
ト、４ａは回動自由端、５は通風路、１１は係止
片である。その他図中同一符号は同一部分を示す
ものとする。
FIG. 1 is a vertical cross-sectional view showing an embodiment of the fireproof weather cover of this invention, and FIG. 2 is a similar vertical cross-sectional view showing a conventional weather cover. In the figure, 3 is a cover body, 4 is a damper plate, 4a is a rotatable free end, 5 is a ventilation passage, and 11 is a locking piece. In other figures, the same reference numerals indicate the same parts.
Claims (1)
ートの回動自由端を、上記カバー本体に一端を取
付けられ所定の変態温度を有する形状記憶合金製
係止片により、常温で上記通風路の開放状態に保
持すると共に、この通風路の異常上昇温度での上
記係止片の変移により、上記ダンパープレートで
上記通風路を閉塞させるようにしたことを特徴と
する防火形ウエザーカバー。 The rotatable free end of the damper plate that opens and closes the passage in the main body cover is placed in the open state of the ventilation passage at room temperature by a locking piece made of a shape memory alloy having one end attached to the cover body and having a predetermined transformation temperature. A fireproof type weather cover characterized in that the damper plate closes the ventilation passage by holding the damper plate and moving the locking piece when the temperature of the ventilation passage increases abnormally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5952287U JPS63168735U (en) | 1987-04-20 | 1987-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5952287U JPS63168735U (en) | 1987-04-20 | 1987-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63168735U true JPS63168735U (en) | 1988-11-02 |
Family
ID=30891092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5952287U Pending JPS63168735U (en) | 1987-04-20 | 1987-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168735U (en) |
-
1987
- 1987-04-20 JP JP5952287U patent/JPS63168735U/ja active Pending
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