JPH0129353Y2 - - Google Patents
Info
- Publication number
- JPH0129353Y2 JPH0129353Y2 JP12233585U JP12233585U JPH0129353Y2 JP H0129353 Y2 JPH0129353 Y2 JP H0129353Y2 JP 12233585 U JP12233585 U JP 12233585U JP 12233585 U JP12233585 U JP 12233585U JP H0129353 Y2 JPH0129353 Y2 JP H0129353Y2
- Authority
- JP
- Japan
- Prior art keywords
- bent
- welding
- wall
- peripheral wall
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000003466 welding Methods 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000005452 bending Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、一般に自動車、或いはその他各種の
機械、設備、装置等に給油、給気の供給路等とし
て配設多用される管径20ｍ／ｍ程度以下で、且つ
肉厚1.5ｍ／ｍ程度以下の比較的細径薄肉の炭素
鋼、或いはステンレス鋼からなる金属管端部にお
けるフランジ継手との熔接固定構造の改良に関す
るものである。[Detailed description of the invention] [Field of industrial application] The present invention is applicable to pipes with a diameter of 20m/20m, which are commonly installed as oil and air supply channels in automobiles and other various machines, equipment, devices, etc. The present invention relates to an improvement in a structure for welding and fixing a flange joint at the end of a metal tube made of relatively small-diameter, thin-walled carbon steel or stainless steel with a thickness of approximately 1.5 m/m or less and a wall thickness of approximately 1.5 m/m or less.
従来、この種の熔接固定構造としては第４図に
例示するように、配管P′の接続端部を、切断した
ままの状態で相手板状フランジ体１１の組付け孔
１２部に挿着し、ガス又はアーク業によつて該組
付け孔の孔周面１３に熔接１４して構成されてい
た。
Conventionally, as shown in FIG. 4, this type of welding and fixing structure involves inserting the connecting end of the pipe P' into the assembly hole 12 of the mating plate-shaped flange body 11 in an uncut state. , by welding 14 to the circumferential surface 13 of the assembly hole using gas or arc.
しかしながら前記従来の熔接固定構造にあつて
は、配管P′の接続端部を切断したままの状態でフ
ランジ体１１側の組付け孔１２の孔周縁に熔接１
４して構成されるため、該配管とフランジ体１１
との極度の肉厚の相違とガス又はアークによる熔
接とに起因して、第５図に示すように特に配管
P′側の加熱部分に、しばしば局部過熱によつて一
部溶融された肉薄部分１５を生じて該部分での機
械的強度を劣化せしめることとなり、製品として
の曲げ形状等のバラツキ、或いは不具合な状態の
もとでの無理な基体への接続及び加振状態下にあ
つて、配設使用中に前記加熱部分の配管P′側に亀
裂、折損並びに洩れを誘発する問題を有すること
となつた。
However, in the conventional welding and fixing structure, the welding hole 1 is attached to the periphery of the assembly hole 12 on the flange body 11 side while the connecting end of the pipe P' remains cut.
4, the piping and the flange body 11
Due to the extreme wall thickness differences between pipes and gas or arc welding, the
In the heated part on the P' side, a thin wall part 15 that is partially melted due to local overheating often occurs, which deteriorates the mechanical strength of the part, resulting in variations in the bending shape of the product or defects. Due to the forced connection to the base under such conditions and the vibration conditions, there was a problem in that the piping P' side of the heating part would cause cracks, breakage, and leakage during the installation and use. .
本考案は従来の前記問題を極めて効果的に解決
するため、配管の接続端部を外方に折り曲げて断
面字状に形成する先端周壁と折り曲げ周壁との
間に、後端部を該折り曲げ周壁の後端周縁より後
方に突出する該配管とは別体の金属筒体を挟着介
在した状態で、該介在部分の前記折り曲げ周壁を
フランジ体の組付け孔部に挿着せしめ、且つその
孔周面と前記折り曲げ周壁、又は、孔周緑と折り
曲げ周壁の先端及び前記金属筒体の孔周面とを熔
接して構成することにより、配管とフランジ体と
の極度の肉厚の相違する場合でのガス又はアーク
による熔接に際しても、筒体による保護壁として
の構造によつて前記問題の憂いをなくし、配設使
用中における配管側の加熱熔接附近での亀裂、折
損、或いは洩れの発生を軽減、防止することので
きる細径薄肉金属管端部におけるフランジ継手と
の熔接固定構造を提案することを目的とするもの
である。 In order to extremely effectively solve the above-mentioned conventional problems, the present invention has been developed by bending the connecting end of a pipe outward to form a cross-sectional shape between the tip peripheral wall and the bent peripheral wall. The bent peripheral wall of the intervening portion is inserted into the assembly hole of the flange body with a metal cylindrical body separate from the piping that protrudes rearward from the rear end periphery interposed therebetween, and the hole is When the wall thickness of the pipe and the flange body are extremely different by welding the circumferential surface and the bent circumferential wall, or the hole circumferential green, the tip of the bent circumferential wall, and the hole circumferential surface of the metal cylindrical body. Even when welding with gas or arc, the structure of the cylindrical body as a protective wall eliminates the above-mentioned problems, and prevents cracks, breakage, or leakage from occurring near the heated weld on the piping side during installation and use. The purpose of the present invention is to propose a structure for welding and fixing the end portion of a small-diameter thin-walled metal pipe to a flange joint, which can reduce and prevent the problem.
本考案は、配管の接続端部に形成する断面字
状の先端周壁と折り曲げ周壁との間に、後端部を
該折り曲げ周壁の後端周縁より後方に突出する短
寸状の金属筒体を挟着介在した状態で、該介在部
分の前記折り曲げ周壁部を板状フランジ体の組付
け孔部に挿着せしめ、且つ少くともその孔周面と
前記折り曲げ周壁とを熔接して固定した細径薄肉
金属管端部におけるフランジ継手との熔接固定構
造を要旨とするものであり、更に前記金属筒体の
後方の外周面側を、後端部につれて薄肉状に傾斜
して構成したものである。
The present invention provides a short metal cylindrical body whose rear end protrudes rearward from the rear edge of the bent peripheral wall, between the cross-sectional tip circumferential wall formed at the connecting end of the pipe and the bent circumferential wall. The bent peripheral wall portion of the intervening portion is inserted into the assembly hole of the plate-like flange body in a sandwiched state, and at least the hole peripheral surface and the bent peripheral wall are fixed by welding. The main feature is a welding and fixing structure to a flange joint at the end of a thin metal tube, and furthermore, the rear outer circumferential surface side of the metal cylinder body is configured to be inclined to become thinner toward the rear end.
以下、本考案の一実施例を図面に基づいて説明
すれば、第１図は本考案に係る細径薄肉金属管端
部におけるフランジ継手との熔接固定構造の正面
図、第２図は第１図Ａ−Ａ線の一部切欠き断面
図、第３図は他の実施例に係る第２図相当図であ
つて、１は軸芯部に組付け孔２を設け、その外側
に基体への取付け孔を有する炭素鋼、或いはステ
ンレス鋼からなる板状フランジ体、Ｐは前記寸法
程度以下の細径薄肉の金属からなる配管であり、
該配管の接続端部を外方に折り曲げて断面字状
に形成した先端周壁P1と折り曲げ周壁P2との間
に、後端部を該折り曲げ周壁の後端周縁より後方
に突出する配管Ｐとは別体の短寸状からなる金属
筒体５を挟着介在した状態で、該介在部分の前記
折り曲げ周壁P2部をフランジ体１の組付け孔２
部に挿着せしめ、且つその孔周面３と折り曲げ周
壁P2とを熔接４するか（第２図参照）、或いは孔
周面３と折り曲げ周壁P2の先端及び金属筒体５
の外周壁とを熔接４するか（第３図参照）して固
定し、構成されるものである。
Hereinafter, one embodiment of the present invention will be described based on the drawings. Fig. 1 is a front view of a structure for welding and fixing a flange joint at the end of a small-diameter thin-walled metal pipe according to the present invention, and Fig. FIG. 3 is a partially cutaway sectional view taken along the line A-A in FIG. 3, which is a view corresponding to FIG. A plate-shaped flange body made of carbon steel or stainless steel having a mounting hole of
A pipe P whose rear end protrudes rearward from the rear end periphery of the bent peripheral wall is located between a tip peripheral wall P 1 formed into a cross-sectional shape by bending the connecting end of the pipe outward and a bent peripheral wall P 2 The bent peripheral wall P 2 portion of the intervening portion is inserted into the assembly hole 2 of the flange body 1 with a short metal cylinder 5 separate from the flange body 1 sandwiched therebetween.
or by welding the hole circumferential surface 3 and the bent circumferential wall P2 (see Fig. 2), or the hole circumferential surface 3 and the tip of the bent circumferential wall P2 and the metal cylindrical body 5.
It is constructed by welding (4) or fixing (see FIG. 3) the outer circumferential wall of.
本考案は、このようにして配管Ｐの前記折り曲
げ周壁P2部に金属筒体５を挾着介在させ、該介
在部分の折り曲げ周壁P2部をフランジ体１の組
付け孔２部に挿着せしめ、且つ孔周面３と折り曲
げ周壁P2、又は、孔周面３と折り曲げ周壁P2の
先端及び金属筒体５の外周壁とを熔接して構成す
るため、別体の筒体５による保護壁としての挾着
介在構造と、孔周面３と折り曲げ周壁P2とを熔
接４する構造とによつて、配管Ｐとフランジ体１
との極度の肉厚の相違する場合でのガス又はアー
クによる熔接に際しても、局部過熱による配管Ｐ
側の前記肉薄化を軽減、防止し、同時に熔接作業
上の管理面を容易とすることができ、更に熔接附
近の配管Ｐ側の機械的強度を著しく向上すること
となるのである。
In this way, the present invention interposes the metal cylindrical body 5 between the two parts of the bent peripheral wall P of the pipe P, and inserts the two parts of the bent peripheral wall P of the interposed part into the two parts of the assembly hole of the flange body 1. In addition, since the hole circumferential surface 3 and the bent circumferential wall P 2 or the hole circumferential surface 3 and the tip of the bent circumferential wall P 2 and the outer circumferential wall of the metal cylindrical body 5 are constructed by welding, a separate cylindrical body 5 is used. The piping P and the flange body 1 are separated by a clamping intervening structure as a protective wall and a structure in which the hole circumferential surface 3 and the bent circumferential wall P2 are welded together.
Even when welding with gas or arc in cases where the wall thickness is extremely different from the pipe P due to local overheating,
This makes it possible to reduce and prevent the thinning of the side wall, and at the same time to facilitate the management of the welding operation, and furthermore, the mechanical strength of the side of the pipe P near the welding area is significantly improved.
以上説明したように、本考案の細径薄肉金属管
端部におけるフランジ継手との熔接固定構造は、
配管Ｐ側の熔接附近での機械的強度を向上するこ
とができ、従つて製品としての曲げ形状等のバラ
ツキ、或いは不具合な状態のもとでの無理な基体
への接続及び加振状態下にあつても、配設使用中
の配管Ｐ側の熔接附近での亀裂、折損及び洩れの
発生を軽減、防止することができる極めて有用な
フランジ継手との熔接固定構造である。
As explained above, the structure of welding and fixing the flange joint at the end of the small-diameter thin-walled metal pipe of the present invention is as follows:
It is possible to improve the mechanical strength near the weld on the pipe P side, and therefore it is possible to prevent variations in the bending shape of the product, unreasonable connection to the base under defective conditions, and vibration conditions. This is an extremely useful welded and fixed structure with a flange joint that can reduce and prevent the occurrence of cracks, breakage, and leaks near the welded part of the pipe P during installation and use.
第１図は本考案の一実施例に係る細径薄肉金属
管端部におけるフランジ継手との熔接固定構造の
正面図、第２図は第１図Ａ−Ａ線の一部切欠き断
面図、第３図は他の実施例に係る第２図相当図、
第４図は従来の実施例を示す一部切欠き縦断面
図、第５図は第４図の熔接部での一部拡大図であ
る。
１……フランジ体、２……組付け孔、３……孔
周面、４……熔接、５……筒体、Ｐ……配管、
P1……先端周壁、P2……折り曲げ周壁。
FIG. 1 is a front view of a structure for welding and fixing a flange joint at the end of a small-diameter thin-walled metal pipe according to an embodiment of the present invention, and FIG. 2 is a partially cutaway sectional view taken along line A-A in FIG. FIG. 3 is a diagram corresponding to FIG. 2 according to another embodiment,
FIG. 4 is a partially cutaway vertical cross-sectional view showing a conventional embodiment, and FIG. 5 is a partially enlarged view of the welded portion in FIG. 4. 1... Flange body, 2... Assembly hole, 3... Hole circumferential surface, 4... Welding, 5... Cylindrical body, P... Piping,
P 1 ... tip peripheral wall, P 2 ... bending peripheral wall.
Claims (1)
端周壁P1と折り曲げ周壁P2との間に、後端部
を該折り曲げ周壁の後端周縁より後方に突出す
る短寸状の金属筒体５を挟着介在した状態で、
該介在部分の前記折り曲げ周壁P2部を、板状
フランジ体１の組付け孔２部に挿着せしめ、且
つ少くともその孔周面３と前記折り曲げ周壁
P2とを熔接４して固定したことを特徴とする
細径薄肉金属管端部におけるフランジ継手との
熔接固定構造。 ２ 実用新案登録請求の範囲第１項記載におい
て、前記金属筒体５の後方の外周面側を、後端
部につれて薄肉状に傾斜して構成したことを特
徴とする細径薄肉金属管端部におけるフランジ
継手との熔接固定構造。[Scope of Claim for Utility Model Registration] 1. Between the cross-sectional tip circumferential wall P1 formed at the connecting end of the pipe P and the bent circumferential wall P2 , the rear end is located behind the rear end circumferential edge of the bent circumferential wall. With the protruding short metal cylinder 5 interposed,
The bent peripheral wall P2 part of the intervening part is inserted into the assembly hole 2 part of the plate-like flange body 1, and at least the hole peripheral surface 3 and the bent peripheral wall
A structure for welding and fixing a flange joint at the end of a small-diameter thin-walled metal tube, characterized in that P2 is fixed by welding. 2. The narrow-diameter thin-walled metal tube end portion as set forth in claim 1, characterized in that the rear outer circumferential surface side of the metal cylinder 5 is inclined to become thinner toward the rear end. Welded and fixed structure with flange joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12233585U JPH0129353Y2 (en) | 1985-08-09 | 1985-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12233585U JPH0129353Y2 (en) | 1985-08-09 | 1985-08-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6230086U JPS6230086U (en) | 1987-02-23 |
| JPH0129353Y2 true JPH0129353Y2 (en) | 1989-09-06 |
Family
ID=31012424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12233585U Expired JPH0129353Y2 (en) | 1985-08-09 | 1985-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0129353Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH089505Y2 (en) * | 1992-05-26 | 1996-03-21 | 株式会社三五 | Flange mounting structure for pipe |
-
1985
- 1985-08-09 JP JP12233585U patent/JPH0129353Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6230086U (en) | 1987-02-23 |
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