JPS635335U

JPS635335U -

Info

Publication number: JPS635335U
Application number: JP9786086U
Authority: JP
Priority date: 1986-06-26
Filing date: 1986-06-26
Publication date: 1988-01-14

Description

[Brief explanation of the drawing]

第１図および第２図はこの考案の防火ダンパー
装置を示す断面図およびその左側面図、第３図は
温度ヒユーズの溶断時の状態を示す断面図、第４
図はこの時のシヤツター板の閉止力の説明図、第
５図および第６図は従来の防火ダンパー装置を示
す断面図およびその左側面図、第７図はその温度
ヒユーズの溶断時の状態を示す断面図、第８図は
この時のシヤツター板の閉止力の説明図、第９図
は第５図のシヤツター板の開放状態での荷重の印
加状態を示す説明図である。なお図中１は通風筒、２は通風路、３はシヤツ
ター板、４は回動助成錘り、５は温度ヒユーズ、
７はシール板、９は間隔保持腕を示す。その他図
中同一符号は同一部分を示すものとする。 1 and 2 are a cross-sectional view and a left side view of the fire damper device of this invention, FIG. 3 is a cross-sectional view showing the state when the temperature fuse is blown, and FIG.
The figure is an explanatory diagram of the closing force of the shutter plate at this time, Figures 5 and 6 are a sectional view and left side view of a conventional fire damper device, and Figure 7 shows the state of the temperature fuse when it is blown. The cross-sectional view shown in FIG. 8 is an explanatory diagram of the closing force of the shutter plate at this time, and FIG. 9 is an explanatory diagram showing the state of application of the load when the shutter plate of FIG. 5 is in the open state. In the figure, 1 is a ventilation tube, 2 is a ventilation path, 3 is a shutter plate, 4 is a rotation assist weight, 5 is a temperature fuse,
7 indicates a seal plate, and 9 indicates a spacing arm. In other figures, the same reference numerals indicate the same parts.

Claims

[Scope of utility model registration request]

A shutter plate that rotates when the attached temperature fuse is fused and its outer periphery abuts an annular seal plate provided on the inner circumferential surface of the ventilation tube to shut off the ventilation path of the ventilation tube from an open state to a closed state. , and a spacing arm is provided on the shutter plate to be perpendicular to the shutter plate.
In an arrangement in which a rotation assisting weight for the shutter plate is attached to the spacing arm, the combined center of gravity of the rotation assisting weight and the supporting spacing arm is determined from the shutter plate to the rotation assisting weight. A fire prevention damper device characterized in that the fire damper device is located on the side opposite to the shutter plate from the bisecting point of the distance to the end face on the side opposite to the shutter plate.