JPS5999117U

JPS5999117U - hollow double tube

Info

Publication number: JPS5999117U
Application number: JP20205882U
Authority: JP
Inventors: 大谷　浩男; 敬一佐藤
Original assignee: 富士重工業株式会社
Priority date: 1982-12-23
Filing date: 1982-12-23
Publication date: 1984-07-04

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]

第１図は本考案の一実施例の中空２重管を備えた内燃機
関の排気系を示す概略構成図、第２図は第１図の■矢視
部分拡大図、第３図は第２図の■−■線拡線断大断面図
る。１．２・・・排気管（中空２重管）、ｌａ、　　２ａ・
・・曲げ部、３・・・内管、３ａ、　３ｂ・・・凸部、
４・・・外管、４ａ、　　４ｂ・・・凸部、５・・・空
間。Fig. 1 is a schematic configuration diagram showing the exhaust system of an internal combustion engine equipped with a hollow double pipe according to an embodiment of the present invention, Fig. 2 is an enlarged view of a portion of Fig. 1 in the direction of the ■ arrow, and Fig. 3 is a A cross-sectional view of the enlarged line ■-■ in the figure. 1.2...Exhaust pipe (hollow double pipe), la, 2a.
...Bent part, 3...Inner pipe, 3a, 3b...Convex part,
4...Outer tube, 4a, 4b...Convex portion, 5...Space.

Claims

[Scope of utility model registration request]

In a hollow double pipe that has a space between the inner pipe and the outer pipe and has a bent part, there is a space on the inner side of the bent part of both the inner pipe and the outer pipe, which is perpendicular to the longitudinal direction of the inner pipe and the outer pipe. A hollow double pipe characterized by forming convex portions in each direction.