JPS6313991A - Pipe structure using spiral matallic pipe as outer layer structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tube structure in which an outer layer structure is a spiral metal tube.

Traditionally, spiral metal pipes have been used as ducts, but in recent years, they have been used not only for construction of strong structures such as concrete hollow slab construction methods in civil engineering and construction works, but also for the walls of such structures, Forming a hole of a desired size in a desired direction such as vertically, horizontally, or vertically on the inner surface of a part forming a floor or roof, or making the inner surface of a wall heat insulating or sound insulating. The reality is that it has become necessary to eliminate sexual and other physical obstacles, and various measures are being researched to meet these demands.

Also, in the past, concrete buildings were built for 40 years or 5 years.
These buildings were designed and constructed in such a way that they could maintain the same structure as when they were constructed for a long period of time, even over 70 years. Rather, we should take the opposite approach, that is, modify all or part of the originally constructed civil engineering or architectural structure in a very short period of time, or transform it into a building for a completely different purpose. Modifications are becoming more common.

By fully considering the above-mentioned problems, the present invention has developed a tube whose outer layer structure is a spiral metal tube, which is relatively low cost and highly practical, suitable for use inside walls, floors, roofs, etc. Its purpose is to provide a structure.

Next, a specific configuration for achieving the above object will be explained with reference to the drawings. A metal conductive band plate is spirally wound, adjacent side edge portions are joined together, and then spirally wound. The part of the spiral metal tube formed with reinforcing fin-like protrusions toward the inner surface along the turned part is used as the outer layer structure, and inside the spiral metal tube, iron pipe, steel pipe copper, etc. are placed concentrically with the spiral metal tube. A metal pipe such as a pipe or a synthetic resin pipe is inserted to form an inner layer structure, and a foamable synthetic resin or other material with the same properties is placed in the gap between the inner layer structure and the outer layer structure. This is a tube structure in which the outer layer structure is a spiral metal tube made of aluminum or without any filling.

Next, to describe the effects resulting from the above configuration, since the fin-like protrusions are arranged inward on the inner circumferential surface of the spiral metal tube, the strength of the spiral metal tube itself can be strengthened, and the metal tube When placed inside a concrete structure, the outer peripheral surface of the metal pipe is smooth and has no protrusions, so even if a concrete layer is formed around the pipe, there will be no cracks or other structural problems in the concrete layer. The effect is that there is no possibility of any undesirable hindrance occurring.

In addition, fin-like protrusions are placed on the inner peripheral surface of the spiral metal tube to increase the strength of the spiral metal tube itself.
When a metal tube or a synthetic resin tube is inserted concentrically into the spiral metal tube, the outer layer structure made of the spiral metal tube is supported by the inner edge of the fin-like projections provided on the inner peripheral surface of the spiral metal tube. It is possible to insert an insulating material such as foamed synthetic resin into the gap between the inner layer structure made of metal pipe or synthetic resin, or to perform physical insulation such as thermal insulation using air without inserting anything. There is an effect that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a sectional view of a main part of a tube structure according to the present invention, and FIG. 2 is a horizontal sectional view of a wall using the tube structure of FIG. 1.

Claims (3)

[Claims] (1) A tube structure whose outer layer structure is a spiral metal tube with fin-like projections arranged on its inner peripheral surface. (2) The tube structure according to claim 1, wherein another tube having a relatively smaller diameter than that of the spiral metal tube is inserted into the inside of the spiral metal tube to form an inner layer structure. (3) The tube structure according to claim 2, wherein a physically insulating material is provided between the outer layer structure and the inner layer structure.