JP2540571Y2 - Double-wall flare structure for connecting pipe ends - Google Patents
Double-wall flare structure for connecting pipe endsInfo
- Publication number
- JP2540571Y2 JP2540571Y2 JP8851591U JP8851591U JP2540571Y2 JP 2540571 Y2 JP2540571 Y2 JP 2540571Y2 JP 8851591 U JP8851591 U JP 8851591U JP 8851591 U JP8851591 U JP 8851591U JP 2540571 Y2 JP2540571 Y2 JP 2540571Y2
- Authority
- JP
- Japan
- Prior art keywords
- double
- wall
- flare
- flare structure
- pipe
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
- F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
- F16L19/0283—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and having a bell-mouthed shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は一般に自動車或いは各種
の機械、装置等に給油、給気の供給路等として配設され
る管径２０ｍ／ｍ、肉厚１．５ｍ／ｍ程度以下の比較的
細径、薄肉からなる金属管による接続端部に設けてなる
接続二重壁フレア構造の改良に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a comparison of a pipe diameter of about 20 m / m and a wall thickness of about 1.5 m / m or less, which is generally provided as an oil supply / supply path for an automobile or various machines and devices. The present invention relates to an improvement in a connection double-wall flare structure provided at a connection end portion of a metal tube having a small diameter and a thin wall.
【０００２】[0002]
【従来の技術】従来、この種の二重壁フレア構造として
は例えば図４に示すように、管(P')の接続端部での二重
壁フレア(11)のなす開口壁(11') 部を単に外方に開口す
る平滑な円錐壁(12)をもって形成され、接続時にあって
相手継手(13)の受圧座面と組込んだナット(14)の押圧座
面との間に螺合締付けに伴って強固に挾圧して接続する
ように構成されていた。2. Description of the Related Art Conventionally, as this type of double-walled flare structure, for example, as shown in FIG. 4, an opening wall (11 ') formed by a double-walled flare (11) at a connection end of a pipe (P'). ) Portion is formed with a smooth conical wall (12) that simply opens outward, and a screw is formed between the pressure receiving seat surface of the mating joint (13) and the pressing seat surface of the assembled nut (14) during connection. The connection was made by firmly clamping and connecting with the fastening.
【０００３】[0003]
【考案が解決しようとする課題】しかしながら、このよ
うな従来の技術においては、前記平滑な円錐壁(12)の構
造により、二重壁フレア(11)の座面は相手受圧座面と全
面で当接するため面接触となり面圧が上昇しにくく洩れ
を発生し易い。また管(P')側の曲げ形状のバラツキ等に
起因する相手受圧座面での片当りによる洩れに対処した
過大な締付け、及び比較的薄肉からなる管(P')自体の構
造並びに加振下での配設状態等とに起因して、二重壁フ
レア(11)の首下部に疲労応力の集中をみてしばしば亀
裂、折損を誘発する問題があった。However, in such a conventional technique, due to the structure of the smooth conical wall (12), the seating surface of the double-walled flare (11) is entirely on the mating pressure receiving seating surface. The contact makes surface contact, so that the surface pressure hardly rises and leakage easily occurs. Excessive tightening to cope with leakage due to one-sided contact at the mating pressure receiving surface due to variations in the bending shape of the pipe (P ') side, and the structure and vibration of the pipe (P') itself, which is relatively thin There was a problem that cracks and breaks were often caused in the lower part of the neck of the double wall flare (11) due to the concentration of fatigue stress due to the arrangement state below.
【０００４】本考案は従来技術の有する前記問題に鑑み
てなされたものであり、接続時にあって局部的に面圧を
高め、過大な締付け力を不要とし、同時に二重壁フレア
の首下部での応力集中を分散して疲労を軽減せしめ、長
期に亘って該首下部での亀裂、折損の憂いをなくすこと
のできる管端部の二重壁フレア構造を提案することを目
的とするものである。The present invention has been made in view of the above-mentioned problems of the prior art. At the time of connection, the surface pressure is locally increased, and an excessive tightening force is not required. The purpose of the present invention is to propose a double-walled flare structure at the pipe end which can reduce the fatigue by dispersing the stress concentration of the pipe and reduce the fear of cracking and breakage at the lower part of the neck for a long time. is there.
【０００５】[0005]
【課題を解決するための手段】本考案は上記目的を達成
するため、接続する管端部にラッパ状に屈曲開口して一
体に設けてなる二重壁によるフレア構造において、二重
壁フレアのなす開口壁の内側のシート面部に、該シート
面に沿って環状の突起壁を設けて構成した管端部の接続
二重壁フレア構造を要旨とするものであり、更に前記突
起壁を断面錐状もしくは円弧状として形成するものであ
る。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a double-walled flare structure having a double-walled flare structure which is integrally formed with a tube-shaped bent end opening at the end of a pipe to be connected. The present invention is characterized in that a tube-end connection double-wall flare structure is formed by providing an annular projection wall along the sheet surface on the sheet surface inside the opening wall to be formed. Or an arc shape.
【０００６】[0006]
【作用】本考案はこのように構成されているため、前記
開口壁部での突起壁の構造により、ナットによる継手の
受圧座面への挾圧された接続時に線接触して局部的に面
圧を高めることとなり、従って例え該受圧座面での片当
りにあっても過大な締付け力を不要とし、同時にフレア
首下部での応力集中を軽減して効果的に分散することが
でき、加振状態での配設下にあっても該首下部での亀
裂、折損の憂いをなくして長期に亘り安定且つ確実に接
続することができる。According to the present invention, the structure of the projecting wall at the opening wall allows the nut to come into line contact with the pressure receiving seat surface of the joint when it is clamped to the pressure receiving seat surface, thereby causing a local surface contact. Therefore, even if there is only one contact on the pressure receiving seat surface, an excessive tightening force is unnecessary, and at the same time, the stress concentration at the lower part of the flare neck can be reduced to effectively disperse. Even under the arrangement in the swinging state, the connection can be stably and reliably performed over a long period without worrying about cracks and breakage at the lower part of the neck.
【０００７】[0007]
【実施例】以下、本考案の実施例を図面に基づいて説明
すれば、図１は本考案の管端部の接続二重壁フレア構造
の一部切欠き平面図、図２は他の実施例を示す同上図１
相当図、図３は図１の接続状態を示す一部切欠き縦断面
図であって、(1) は管(P)端部での二重壁フレアであ
り、接続する端部に位置して軸芯方向の外方に屈曲開口
して一体に設けた該二重壁フレアのなす開口壁(1')の内
側のシート面部に、該シート面に沿って断面錐状（図
１）もしくは円弧状（図２）の環状突起壁(2) を設けて
構成するものである。そして接続時に該突起壁部を相手
継手(3) の受圧座面に当接した状態でナット(4) の押圧
座面との間に螺合締付けに伴って局部的に面圧を高めて
挾圧して接続するものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway plan view of a double-wall flare structure for connecting a pipe end according to the present invention, and FIG. Fig. 1 showing an example
FIG. 3 is a partially cutaway longitudinal sectional view showing the connection state of FIG. 1, and (1) is a double-walled flare at the end of the pipe (P), which is located at the connecting end. The double-walled flare, which is bent outward in the axial direction and integrally formed, has a double-walled flare inside the opening surface (1 '), and has a conical cross section (FIG. 1) along the sheet surface. It is constructed by providing an arc-shaped (FIG. 2) annular projection wall (2). At the time of connection, the projecting wall portion is brought into contact with the pressure receiving seat surface of the mating joint (3), and is locally tightened between the pressing seat surface of the nut (4) and the pressing seat surface of the nut (4) by increasing the surface pressure and tightening. It is connected by pressing.
【０００８】[0008]
【考案の効果】以上説明したように本考案による接続二
重壁フレア構造は、特に二重壁フレア(1) のなす開口壁
(1')の内側のシート面部に環状の突起壁(2) を設けて構
成するため、接続時の締付けに伴って座面に線接触して
面圧を高める結果となり、従って例え受圧座面での片当
りにあってもナット(4) での過大な締付け力を不要と
し、同時に二重壁フレア(1) の首下部での応力集中を軽
減して効果的に分散することとなり、加振状態での配設
下でも該首下部での亀裂、折損の憂いをなくして長期に
亘り安定且つ確実に接続することができる等、極めて有
用な管端部での接続二重壁フレア構造である。[Effects of the Invention] As described above, the connection double-wall flare structure according to the present invention is particularly suitable for the opening wall formed by the double-wall flare (1).
Since an annular projection wall (2) is provided on the seat surface inside (1 '), the surface pressure is increased by line contact with the seat surface with tightening at the time of connection, so that, for example, the pressure receiving seat surface This eliminates the need for an excessive tightening force with the nut (4) even at the end of one side, and at the same time reduces the stress concentration at the lower part of the neck of the double wall flare (1) and effectively disperses it. Extremely useful double-walled flare structure at the pipe end, such as being able to stably and reliably connect for a long period of time without worrying about cracks and breakage at the lower part of the neck even under the arrangement in the vibration state is there.
【図１】管端部の接続二重壁フレア構造の一部切欠き平
面図である。FIG. 1 is a partially cutaway plan view of a connecting double wall flare structure at a pipe end.
【図２】他の実施例を示す同上図１相当図である。FIG. 2 is a diagram corresponding to FIG. 1 showing another embodiment.
【図３】図１の接続状態を示す一部切欠き縦断面図であ
る。FIG. 3 is a partially cutaway longitudinal sectional view showing a connection state of FIG. 1;
【図４】従来例を示す接続二重壁フレア構造の接続状態
時の一部切欠き縦断面図である。FIG. 4 is a partially cutaway longitudinal sectional view showing a connection example of a connection double-wall flare structure showing a conventional example.
１ 二重壁フレア １′ 開口壁 ２ 突起壁 1 Double wall flare 1 'Opening wall 2 Projection wall
Claims (2)
て一体に設けてなる二重壁によるフレア構造において、
二重壁フレア(1) のなす開口壁(1')の内側のシート面部
に、該シート面に沿って環状の突起壁(2) を設けて構成
したことを特徴とする管端部の接続二重壁フレア構造。1. A flare structure having a double wall provided integrally with a tube end bent and opened in a trumpet shape at a connecting end,
A pipe end connection characterized in that an annular projection wall (2) is provided along the sheet surface on the sheet surface inside the opening wall (1 ') formed by the double wall flare (1). Double wall flare structure.
を断面錐状もしくは円弧状として形成したことを特徴と
する管端部の接続二重壁フレア構造。2. The projection wall (2) according to claim 1, wherein:
A double-walled flare structure at the end of the pipe, characterized in that the cross section is formed in a conical or arcuate cross section.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8851591U JP2540571Y2 (en) | 1991-10-02 | 1991-10-02 | Double-wall flare structure for connecting pipe ends |
| GB9220499A GB2260175B (en) | 1991-10-02 | 1992-09-29 | Flared double-wall structure for connecting metal pipes |
| DE19924232797 DE4232797A1 (en) | 1991-10-02 | 1992-09-30 | CONICAL EXTENDED DOUBLE WALL ARRANGEMENT FOR CONNECTING METAL PIPES |
| US08/164,394 US5354107A (en) | 1991-10-02 | 1993-12-09 | Flared double-wall structure for connecting metal pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8851591U JP2540571Y2 (en) | 1991-10-02 | 1991-10-02 | Double-wall flare structure for connecting pipe ends |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0530685U JPH0530685U (en) | 1993-04-23 |
| JP2540571Y2 true JP2540571Y2 (en) | 1997-07-09 |
Family
ID=13944968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8851591U Expired - Fee Related JP2540571Y2 (en) | 1991-10-02 | 1991-10-02 | Double-wall flare structure for connecting pipe ends |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2540571Y2 (en) |
| DE (1) | DE4232797A1 (en) |
| GB (1) | GB2260175B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005320995A (en) * | 2004-05-06 | 2005-11-17 | Usui Kokusai Sangyo Kaisha Ltd | Connecting structure and connecting method of metal pipe and connecting object |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529349A (en) * | 1993-08-25 | 1996-06-25 | Itt Corporation | Mounting apparatus with reduced resistance bead seal |
| US5489127A (en) | 1993-08-25 | 1996-02-06 | Itt Corporation | Mounting apparatus with reduced resistance bead seal |
| DE9420502U1 (en) * | 1994-11-30 | 1995-07-20 | Witzenmann Metallschlauchfab | Connection between a pipe and a tubular line element |
| US6729659B2 (en) * | 2001-09-11 | 2004-05-04 | Visteon Global Technologies, Inc. | Flare fitting assembly with metal-to-metal line seal |
| JP2017215030A (en) * | 2016-06-02 | 2017-12-07 | 三桜工業株式会社 | Metal pipe terminal structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE834096C (en) * | 1950-06-28 | 1952-03-17 | Goldschmidt Ag Th | Process for the production of clear, crystallized, practically anhydrous sodium thiosulphate with low hygroscopicity |
| GB834721A (en) * | 1957-11-15 | 1960-05-11 | Girling Ltd | Improvements relating to hydraulic systems |
| US3265413A (en) * | 1963-07-25 | 1966-08-09 | Parker Hannifin Corp | Flared tube coupling joint and method for making the same |
| DE1891703U (en) * | 1963-09-02 | 1964-04-23 | Bernh Drost K G | DOUBLE TUBE FITTING. |
| US4068515A (en) * | 1977-02-07 | 1978-01-17 | Gould Inc. | Flaring tool |
| JPS5848456Y2 (en) * | 1979-09-21 | 1983-11-05 | クラリオン株式会社 | flare fittings |
| US4598937A (en) * | 1984-10-26 | 1986-07-08 | Usui Kokusai Sangyo Kabushiki Kaisha | Pipe having a double flared end |
-
1991
- 1991-10-02 JP JP8851591U patent/JP2540571Y2/en not_active Expired - Fee Related
-
1992
- 1992-09-29 GB GB9220499A patent/GB2260175B/en not_active Expired - Fee Related
- 1992-09-30 DE DE19924232797 patent/DE4232797A1/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005320995A (en) * | 2004-05-06 | 2005-11-17 | Usui Kokusai Sangyo Kaisha Ltd | Connecting structure and connecting method of metal pipe and connecting object |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2260175B (en) | 1994-10-26 |
| GB2260175A (en) | 1993-04-07 |
| JPH0530685U (en) | 1993-04-23 |
| GB9220499D0 (en) | 1992-11-11 |
| DE4232797A1 (en) | 1993-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0533833Y2 (en) | ||
| FI77723C (en) | Dysröranslutning. | |
| JPH0533832Y2 (en) | ||
| JP2540571Y2 (en) | Double-wall flare structure for connecting pipe ends | |
| JP3846749B2 (en) | Connecting head structure of high-pressure fuel injection pipe | |
| US5354107A (en) | Flared double-wall structure for connecting metal pipes | |
| JP2553658Y2 (en) | Connection flare structure at pipe end | |
| US5271647A (en) | Flared structure for connecting metal pipes | |
| JPH11350707A (en) | Binding fittings and cylindrical member supporting device | |
| JPH10205674A (en) | Common rail | |
| JPS6110074Y2 (en) | ||
| JPH0125834Y2 (en) | ||
| JPS5915820Y2 (en) | Press-fit type sleeve washer for pipe end connection | |
| JP3885903B2 (en) | Common rail | |
| JPS6126703Y2 (en) | ||
| JPH0614327U (en) | Vertical girder support structure | |
| JP4003891B2 (en) | Connection structure of branch connection in common rail | |
| JPS5915824Y2 (en) | Metal tube end connection structure | |
| JP2520075B2 (en) | Connection head structure of high-pressure fuel injection pipe | |
| JPS5846297Y2 (en) | Fasteners for pipe connections | |
| JPH0731034Y2 (en) | Flexible tube fittings | |
| JPH0620947Y2 (en) | Pipe fitting device | |
| JPS608226Y2 (en) | pipe fittings | |
| JPH10159676A (en) | Common rail | |
| JPS59157191U (en) | pipe fittings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |