JPS6457479U

JPS6457479U -

Info

Publication number: JPS6457479U
Application number: JP15161387U
Authority: JP
Priority date: 1987-10-05
Filing date: 1987-10-05
Publication date: 1989-04-10
Also published as: JPH0434308Y2

Description

[Brief explanation of the drawing]

第１ａ図は、本考案の一実施例を示す断面略図
であり、第１ｂ図は、同じく、その要部を示す側
面略図であり、第２ａ図は、同じく、火災時など
におけるその変形を示す断面略図であり、第２ｂ
図は、同じく、その要部を示す側面略図であり、
第３図は、同じく、本考案の一実施例の要部を示
す斜視略図であり、第４ａ図は、本考案の他の実
施例を示す断面略図であり、第４ｂ図は、同じく
、その要部を示す側面略図であり、第５ａ図は、
同じく、火災時などにおけるその変形を示す断面
略図であり、第５ｂ図は、同じく、その要部を示
す側面図である。１……床又は壁、２……プラスチツクパイプ、
３……耐火充填材層、４……防火シート又はカバ
ー、５……パイプ閉塞装置（高温時にパイプを圧
縮し閉塞する機能を有する装置）、６……銅管な
どの金属パイプ、７……断熱材。 FIG. 1a is a schematic cross-sectional view showing one embodiment of the present invention, FIG. 1b is a schematic side view showing the main parts thereof, and FIG. It is a schematic cross-sectional view, and the second b
The figure is also a schematic side view showing the main parts,
FIG. 3 is a schematic perspective view showing a main part of one embodiment of the present invention, FIG. 4a is a schematic cross-sectional view showing another embodiment of the present invention, and FIG. Fig. 5a is a schematic side view showing the main parts;
Similarly, FIG. 5b is a schematic cross-sectional view showing its deformation in the event of a fire, etc., and FIG. 5b is a side view showing the main part. 1...floor or wall, 2...plastic pipe,
3... Fireproof filler layer, 4... Fireproof sheet or cover, 5... Pipe closing device (device that has the function of compressing and blocking the pipe at high temperatures), 6... Metal pipe such as copper pipe, 7... Insulation.

Claims

[Scope of Claim for Utility Model Registration] 1. In a fire and smoke prevention structure at a penetration portion where a plastic pipe 2 or a metal pipe 2 covered with a heat insulating material 7 made of plastic material penetrates the floor or wall 1 of a fireproof compartment, the above-mentioned The gap between the through opening in the floor or wall 1 through which the pipe 2 penetrates is filled and sealed with a refractory filler layer, and the refractory filler layer and the surface of the pipe exposed near the opening are covered with a fireproof sheet or cover. In addition, a pipe closing device is provided on the outer periphery of the pipe, which functions to mechanically close the pipe itself by compressing it from the outside through the fireproof sheet or cover when the temperature is abnormally high. Fire and smoke prevention measures for the penetration of plastic pipes into floors or walls. 2. A fire and smoke prevention structure for a penetration part of a plastic pipe, such as a floor or wall, as set forth in claim 1, wherein the pipe closing device is a shape memory alloy spring. 3. A fire and smoke prevention structure for a penetration part of a plastic pipe, such as a floor or wall, as set forth in claim 1 of the registered utility model, characterized in that the pipe closing device is a spring coil.