JPH0437830U

JPH0437830U -

Info

Publication number: JPH0437830U
Application number: JP8073490U
Authority: JP
Priority date: 1990-07-30
Filing date: 1990-07-30
Publication date: 1992-03-31

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る排気二重管の
スライド部の部分断面図である。第２図は弾性ス
ライド部材の斜視図である。第３図は第１図の
−線断面図である。第４図は車両排気系の概略
構成図である。第５図は従来の排気二重管の断面
図である。第６図は第５図の−線断面図であ
る。第７図は従来の排気二重管のスライド部の断
面図である。第８図は第７図の−線断面図で
ある。主要な部分の符号の説明、１９……排気二重管
、２１……内管、２３……外管、２３ａ……軸方
向他端、２３ｂ……内周面、２５……弾性スライ
ド部材、２７，３５……ビード、２９……基部、
３１……固定部、３３……弾性挾持片。 FIG. 1 is a partial sectional view of a sliding portion of a double exhaust pipe according to an embodiment of the present invention. FIG. 2 is a perspective view of the elastic slide member. FIG. 3 is a sectional view taken along the line -- in FIG. 1. FIG. 4 is a schematic diagram of the vehicle exhaust system. FIG. 5 is a sectional view of a conventional double exhaust pipe. FIG. 6 is a sectional view taken along the line -- in FIG. 5. FIG. 7 is a sectional view of a sliding portion of a conventional double exhaust pipe. FIG. 8 is a sectional view taken along the - line in FIG. 7. Explanation of symbols of main parts, 19... Double exhaust pipe, 21... Inner pipe, 23... Outer pipe, 23a... Other end in the axial direction, 23b... Inner peripheral surface, 25... Elastic slide member, 27, 35...bead, 29...base,
31...fixing part, 33...elastic clamping piece.

Claims

[Claims for Utility Model Registration] (1) An inner tube is covered with an outer tube, one axial end of the outer tube is fixed to the inner tube, and a space for heat insulation is formed between the inner tube and the outer tube. In the double exhaust pipe, an elastic slide is provided between the other axial end of the outer pipe and the inner pipe by bending a strip of thin plate material so that both circumferential ends of the inner pipe are free ends. A double exhaust pipe characterized in that a plurality of protrusions are provided on the elastic slide member to sandwich the inner pipe by abutting on the outer circumferential surface of the inner pipe. (2) The elastic sliding member has a flat base portion formed with a bead that abuts the outer circumferential surface of the inner tube, and an arc-shaped fixed portion that is bent from the base and abuts the inner circumferential surface of the outer tube; It consists of an elastic clamping piece that is bent inward from above the fixing part and whose tip side is curved along the inner tube, and the elastic clamping piece has a bead that clamps the inner tube with the bead at the base. 2. The double exhaust pipe according to claim 1, further comprising a double exhaust pipe.