JPS63145089U

JPS63145089U -

Info

Publication number: JPS63145089U
Application number: JP3760187U
Authority: JP
Priority date: 1987-03-13
Filing date: 1987-03-13
Publication date: 1988-09-26
Also published as: JPH0315897Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例を示す縦断面図、第
２図は第１図の―断面図、第３及び第４図は
要部拡大縦断面説明図、第５図は突起部の形成過
程を示す拡管ゴム通常時の縦断面よりの説明図、
第６図は同じく拡管ゴム圧縮時の縦断面よりの説
明図。１……薄肉ステンレス鋼管、２……継手、３…
…ナツト、３ａ……ナツト端面、４……パツキン
、５……皿バネ、６……山型突起部（凸部）、６
ａ，６ｂ……傾斜面、７……第１切欠部、７ａ…
…テーパ部、７ｂ……パツキン嵌め込み部、８…
…雄ねじ、９……鍔、９ａ……鍔端面、１０……
嵌合部、１１……雌ねじ部、１２……継手当接面
、１３……第２切欠部。 Fig. 1 is a longitudinal cross-sectional view showing an embodiment of this invention, Fig. 2 is a cross-sectional view of Fig. 1, Figs. 3 and 4 are enlarged longitudinal cross-sectional views of main parts, and Fig. 5 is the formation of the protrusion. An explanatory diagram showing the process from a vertical cross-section of the tube expanding rubber during normal operation,
FIG. 6 is an explanatory view from a longitudinal section when the expanded tube rubber is compressed. 1... Thin-walled stainless steel pipe, 2... Fitting, 3...
... Nut, 3a ... Nut end surface, 4 ... Packing, 5 ... Belleville spring, 6 ... Chevron-shaped protrusion (convex part), 6
a, 6b... inclined surface, 7... first notch, 7a...
...Tapered part, 7b...Puttle fitting part, 8...
... Male thread, 9... Tsuba, 9a... Tsuba end surface, 10...
Fitting part, 11...Female thread part, 12...Joint contact surface, 13...Second notch part.

Claims

[Scope of Claim for Utility Model Registration] A thin-walled stainless steel pipe with a convex portion formed on the outer periphery of its end, a joint having an inner diameter into which the thin-walled stainless steel pipe is inserted, and a male thread formed on the end, and a joint with the convex portion formed on the end. A nut having a fitting part facing the boundary and externally fitting into the thin-walled stainless steel pipe and having a female thread part screwing into the male thread of the joint, and a packing provided between the joint and the thin-walled stainless steel pipe. In the connection mechanism of a thin-walled stainless steel pipe and a joint, the convex part of the thin-walled stainless steel pipe is formed into a chevron-shaped projection having two inclined surfaces, and the joint has a convex part on the inner periphery of the end thereof. A first notch is formed with a taper part and a packing fitting part that come into close contact with each other, and a flange having a flange end surface is provided on the outer periphery of the first notch, and the nut has the chevron-shaped protrusion at the inner end of the fitting part. A second notch is formed that closely contacts one of the inclined surfaces, and the end surface of the joint comes into contact when the female thread of the nut and the male thread of the joint are screwed together and fixed.
A joint contact surface is formed by the difference in inner diameter between the fitting part and the female threaded part, and the packing is attached to the thin-walled stainless steel pipe when the female threaded part of the nut and the male thread of the joint are screwed together and fixed. The other inclined surface of the formed chevron-shaped protrusion is formed so as to be in close contact with the joint contact surface of the nut and the seal fitting part of the joint, respectively, and furthermore, when the nut is screwed into the joint, the nut end face and the flange end face A connection mechanism for a thin-walled stainless steel pipe and a joint, characterized by a disc spring fitted onto the joint between the parts and having a colored convex surface.