JPS59128982U

JPS59128982U - spiral duct

Info

Publication number: JPS59128982U
Application number: JP17191983U
Authority: JP
Inventors: 黒川　敬
Original assignee: 黒川　敬
Priority date: 1983-11-08
Filing date: 1983-11-08
Publication date: 1984-08-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図は本考案の実施例を示すものであり第１図は正面図、
第２図は同上図の拡大断面図、第３図はリブ相互の間隔
を伸長した状態を示す正面図１．第４図は同上図の拡大
断面図である。ａ・・・ダクト本体、１・・・ハゼ合せ式接合部、２・
・・コルゲート状リブ。The figures show an embodiment of the present invention, and Figure 1 is a front view;
FIG. 2 is an enlarged sectional view of the same figure as above, and FIG. 3 is a front view showing a state in which the distance between the ribs is extended. FIG. 4 is an enlarged sectional view of the same figure. a... Duct main body, 1... Seamless joint, 2.
...Corrugated ribs.

Claims

[Scope of utility model registration request]

In the spiral duct a, which forms a cylindrical body by spirally winding metal thin plates of a predetermined width while bonding the edge parts of adjacent thin plate bodies, a plurality of corrugated metal plates are formed in the middle part of each joint. Ribs 2...2 are formed, and the joint portion is disposed at a position approximately midway between the peaks and valleys of the corrugated ribs 2...2, and the duct body a is aligned in its axial direction. By reducing the size of the corrugated rib 2.
...Spiral duct made by bringing two mutually adjacent parts into close contact.