JPH0640398Y2 - Connection structure between fuel delivery pipe and branch pipe fitting for branch pipe connection - Google Patents
Connection structure between fuel delivery pipe and branch pipe fitting for branch pipe connectionInfo
- Publication number
- JPH0640398Y2 JPH0640398Y2 JP1985170183U JP17018385U JPH0640398Y2 JP H0640398 Y2 JPH0640398 Y2 JP H0640398Y2 JP 1985170183 U JP1985170183 U JP 1985170183U JP 17018385 U JP17018385 U JP 17018385U JP H0640398 Y2 JPH0640398 Y2 JP H0640398Y2
- Authority
- JP
- Japan
- Prior art keywords
- branch
- pipe
- branch pipe
- fitting
- connection
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 238000007747 plating Methods 0.000 claims description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、例えば燃料噴射型の自動車ガソリン内燃機関
にあつて配設される一辺が20m/m程度以下の細径金属角
パイプからなるフューエル・デリバリパイプ等における
該角パイプ本体と枝管接続用の分岐筒金具との接続構造
の改良に関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to, for example, a fuel injection type automobile gasoline internal combustion engine, which is formed of a small-diameter metal square pipe with a side length of about 20 m / m or less. The present invention relates to an improvement in the connection structure between the square pipe body and a branch pipe fitting for connecting a branch pipe in a delivery pipe or the like.
一般に燃料噴射式ガソリン内燃機関においては、燃料を
高圧で供給噴射せしめ、噴射後の残りの燃料をバイパス
を経て再び燃料タンク側に戻す構造となつているため、
燃料の空気への接触度合が気化器式によるものに比べて
多くなり、従つて、酸化してサワーガソリンが生成され
ることとなる。更に燃料の流通路での鉄素地、或いは銅
鍍金膜等への直接の接触によつて酸化作用を促進するこ
ととなるため、フューエル・デリバリパイプ等ににあつ
ては、少なくとも内周面にニツケル等の鍍金膜を有して
前記鉄素地、或いは銅鍍金膜等の表面を被覆することが
要求されるのである。又絶えず繰返される機関振動に関
連して、金属角パイプ本体と枝管接続用の分岐筒金具と
の接続を確実にして且つ亀裂等による洩れの生じない相
互の接続構造が要求されている。Generally, in a fuel injection type gasoline internal combustion engine, since the fuel is supplied and injected at a high pressure and the remaining fuel after injection is returned to the fuel tank side through a bypass again,
The degree of contact of the fuel with the air is higher than that of the carburetor type, so that the fuel is oxidized and sour gasoline is produced. Further, since the oxidizing action is promoted by direct contact with the iron base material or the copper-plated film in the fuel flow passage, in the case of the fuel delivery pipe, etc. Therefore, it is required to coat the surface of the iron substrate or the copper plated film with a plated film such as. Further, in connection with the engine vibration that is constantly repeated, there is a demand for a mutual connection structure that ensures the connection between the metal square pipe body and the branch pipe fitting for connecting the branch pipe and does not cause leakage due to cracks or the like.
従来の前記フューエル・デリバリパイプとしては、第４
図に例示するように金属材からなる角パイプ（11）の周
壁の平坦面（13）部に穿設した分岐孔（15）部に、枝管
接続用の分岐筒金具（12）をロー熔着するに際して、筒
金具（12）根元端周縁部の切断したままの平面（17）を
前記分岐孔（15）に載置せしめ、該載置位置での相互の
接続部を仮付けした後に全体のロー熔着（16）を行わし
め、その後に製品全体を化学ニツケルの鍍金処理を施し
て内外周全体にニツケルの鍍金膜を被覆して構成されて
いた。As the conventional fuel delivery pipe,
As shown in the figure, the branch pipe fitting (12) for connecting the branch pipe is melted in the branch hole (15) part formed in the flat surface (13) part of the peripheral wall of the square pipe (11) made of a metal material. When attaching, place the flat surface (17) of the peripheral edge of the base end of the tubular metal fitting (12) on the branch hole (15), and temporarily attach the mutual connecting portion at the mounting position, and then the whole. (16), and then the entire product was subjected to chemical nickel plating to coat the entire inner and outer circumferences with a nickel plating film.
しかしながら、このような従来の前記接続構造にあつて
は、分岐孔（15）部に接続される分岐筒金具（12）の根
元端周縁部において切断したままの平面（13）を載置す
る構造のために、ロー熔着（16）部に熔着強度の劣化を
招き、機関振動等に起因して配設中にしばしば亀裂を生
じて洩れを招く等の問題を有し、また分岐筒金具（12）
の接続に際して位置決め及び仮付けの余分な工数を必要
とし、更に不要な外周面での鍍金構造によつて製品コス
トを高価とするばかりでなく、複雑な製品としての曲げ
形状を有する状態のもとで前記鍍金処理を行うため膜厚
を不均一とする等の問題を有するものであつた。However, in such a conventional connecting structure as described above, a flat surface (13), which is still cut, is placed on the peripheral edge portion of the root end of the branch tube fitting (12) connected to the branch hole (15). Therefore, there is a problem that the welding strength is deteriorated in the low-welding (16) portion, and cracks often occur during installation due to engine vibration and the like, leading to leakage. (12)
In addition to requiring extra man-hours for positioning and temporary attachment when connecting, and not only increasing the product cost due to the unnecessary plating structure on the outer peripheral surface, but also having a bent shape as a complicated product However, since the above plating treatment is performed, there is a problem in that the film thickness is not uniform.
本考案は、このような従来の前記問題を極めて効果的に
解決するため、予め内周面に鍍金膜を有する角パイプか
らなるフューエル・デリバリパイプと分岐筒金具とによ
り、また、分岐筒金具の根元端周縁部側に突設した環状
の段付き壁部を分岐孔の孔周面部に嵌着して相互に嵌着
部をロー熔着せしめる構造とすることにより、ロー熔着
部での熔着強度を高めて機関振動下にあつても亀裂及び
洩れ等の憂いがなく確実に接続することができ、更に、
接続に際しての余分な工数をなくして製品コストを廉価
とすることのできる金属角パイプからなるフューエル・
デリバリパイプと枝管接続用分岐筒金具との接続構造を
提案することを目的とするものである。In order to solve the above-mentioned conventional problems very effectively, the present invention uses a fuel delivery pipe made of a square pipe having a plating film on the inner peripheral surface in advance and a branch pipe fitting, and An annular stepped wall portion protruding toward the peripheral edge of the root end is fitted to the hole peripheral surface of the branch hole so that the fitting portions are low-welded to each other. Even if the engine is vibrated, the connection strength can be increased without any fear of cracking or leakage, and the connection can be ensured.
A fuel consisting of a metal square pipe that can reduce the product cost by eliminating extra man-hours for connection.
The purpose is to propose a connection structure between a delivery pipe and a branch pipe fitting for connecting a branch pipe.
本考案は、予め内周面に鍍金膜を有し、且つ周壁の一辺
の平坦面部に分岐孔を穿設した金属角パイプからなるフ
ューエル・デリバリパイプの該分岐孔に、少なくとも内
周面に前記同様に鍍金膜を有し、且つ根元端周縁部側に
環状の段付き壁を突設した枝管接続用の分岐筒金具の先
端部を嵌着すると共に、前記分岐孔の孔周面部に段付き
壁を当接せしめ、更に相互の嵌着部及び当接部をロー熔
着して構成したフューエル・デリバリパイプと枝管接続
用分岐筒金具との接続構造を要旨とするものである。According to the present invention, there is provided a plating / coating film on the inner peripheral surface of the fuel delivery pipe, which is a square metal pipe having a flat surface on one side of the peripheral wall. Similarly, the tip end of a branch pipe fitting for branch pipe connection having a plating film and having an annular stepped wall projecting on the peripheral edge side of the root end is fitted, and a step is formed on the peripheral surface of the branch hole. The gist of the present invention is to provide a connection structure between a fuel delivery pipe and a branch pipe connecting branch metal fitting, which are configured by abutting the attached walls and further low-melting the mutual fitting portion and the abutting portion.
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図は本考案の細径金属角パイプからなるフューエル
・デリバリパイプと枝管接続用分岐筒金具との接続構造
の側面図、第２図は第１図Ａ−Ａ線の拡大断面図、また
第３図は他の実施例に係る第２図相当図であつて、
（１）は予め内周面にニツケル等の鍍金膜（４）を有
し、且つ周壁の一辺の平坦面（３）部に分岐孔（５）を
穿設した細径金属角パイプからなるフューエル・デリバ
リパイプ、（２）は少なくとも内周面、好ましくは端面
にもに前記同様のニツケル等の鍍金膜（４′）を有し、
且つ根元端周縁部側に環状の段付き壁（７）を突設した
金属材からなる枝管接続用の分岐筒金具で、その先端部
（７′）を前記分岐孔（５）に嵌着すると共に、段付き
壁（７）を該分岐孔（５）の孔周面部に当接せしめて相
互の嵌着部及び当接部をロー熔着（６）して接続構成す
るものである。尚（８）はフューエル・デリバリパイプ
としての配設時の機関周りへの取付けステイである。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a connection structure of a fuel delivery pipe consisting of a small-diameter metal square pipe of the present invention and a branch pipe fitting for branch pipe connection, and FIG. 2 is an enlarged sectional view taken along line AA of FIG. Further, FIG. 3 is a view corresponding to FIG. 2 according to another embodiment.
(1) is a fuel consisting of a small-diameter metal square pipe having a plating film (4) of nickel or the like on its inner peripheral surface in advance, and a branch hole (5) formed in a flat surface (3) of one side of the peripheral wall. -The delivery pipe (2) has a plating film (4 ') of nickel similar to the above on at least the inner peripheral surface, preferably the end surface,
A branch pipe fitting for connecting a branch pipe, which is made of a metal material and has an annular stepped wall (7) projecting on the peripheral edge side of the root end, and its tip (7 ') is fitted into the branch hole (5). In addition, the stepped wall (7) is brought into contact with the hole peripheral surface portion of the branch hole (5), and the mutual fitting portion and the contact portion are low-welded (6) to form a connection. In addition, (8) is a mounting stay around the engine when the fuel delivery pipe is installed.
本考案は、このように構成されているため分岐筒金具
（２）の分岐孔（５）への接続に際して、位置決め及び
仮付け等を全く不要として直接ロー熔着作業によつて構
成することができ、同時に嵌着した分岐孔（５）の孔周
面部での突設した段付き壁（７）の構造によつてロー熔
着（６）部での熔着強度を高める結果となり、更に予め
金属角パイプからなるフューエル・デリバリパイプ
（１）及び分岐筒金具（２）のそれぞれの内周面に鍍金
膜（４），（４′）を施していることによつて、ロー熔
着（６）後の鍍金処理を不要とし、且つ余分な外周面側
への鍍金膜の被覆を省くこととなる。Since the present invention is constructed in this way, it is possible to construct it by direct low-welding work without requiring any positioning, provisional attachment or the like when connecting the branch pipe fitting (2) to the branch hole (5). The structure of the projecting stepped wall (7) at the hole peripheral surface of the branch hole (5) simultaneously fitted results in increasing the welding strength at the low welding (6) portion, and further in advance. Since the inner surfaces of the fuel delivery pipe (1) made of a metal square pipe and the branch pipe fitting (2) are plated with the plating films (4) and (4 '), the low welding (6) ) The subsequent plating process is unnecessary, and the extra coating of the outer peripheral surface side with the plating film is omitted.
以上説明したように、本考案による細径金属角パイプと
枝管接続用分岐筒金具との接続構造は、予め内周面に鍍
金膜（４），（４′）を有する金属角パイプからなるフ
ューエル・デリバリパイプと分岐筒金具（２）とによ
り、且つ分岐筒金具（２）の先端部（７′）を分岐孔
（５）に嵌着すると共に、該分岐筒金具（２）の根元端
周縁部側に突設した環状の段付き壁（７）部を分岐孔
（５）の孔周面部に当接して相互に嵌着部及び当接部を
ロー熔着（６）するため、分岐筒金具（２）の接続時の
工数を軽減することができると共に、予め鍍金膜
（４），（４′）が施されているため後処理を不要とし
て製品コストを廉価とし、更に機関振動下にあつてもロ
ー熔着（６）部での亀裂及び洩れ等の憂いがなく確実に
接続することができる極めて有用な接続構造である。As explained above, the connection structure of the small diameter metal square pipe and the branch pipe connecting branch metal fitting according to the present invention comprises the metal square pipe having the plating films (4) and (4 ') on the inner peripheral surface in advance. With the fuel delivery pipe and the branch tube fitting (2), the tip end (7 ') of the branch tube fitting (2) is fitted in the branch hole (5), and the root end of the branch tube fitting (2) is attached. Since the annular stepped wall (7) projecting on the peripheral edge side is brought into contact with the hole peripheral surface of the branch hole (5) and the fitting part and the contact part are low-welded (6), It is possible to reduce the number of steps for connecting the tubular metal fitting (2), and since the plating films (4) and (4 ') are applied in advance, post-treatment is not required, resulting in a low product cost and further under engine vibration. Even in this case, there is no fear of cracks or leaks in the low-welding (6) part, and reliable connection is possible. A Do connection structure.
第１図は本考案の一実施例を示す細径金属角パイプから
なるフューエル・デリバリパイプと枝管接続用分岐筒金
具との接続構造の側面図、第２図は第１図Ａ−Ａ線の拡
大断面図、第３図は他の実施例に係る同上第２図相当
図、第４図は従来例を示す接続部の拡大横断面図であ
る。 （１）…フューエル・デリバリパイプ、（２）…分岐筒
金具、（３）…平坦面、（４）（４′）…鍍金膜、
（５）…分岐孔、（６）…ロー熔着、（７）…段付き
壁。FIG. 1 is a side view of a connection structure of a fuel delivery pipe made of a small-diameter metal square pipe and a branch pipe connecting branch metal fitting showing an embodiment of the present invention, and FIG. 2 is a line AA in FIG. FIG. 3 is an enlarged cross-sectional view of FIG. 2, and FIG. 3 is an enlarged cross-sectional view of a connecting portion showing a conventional example. (1) ... Fuel delivery pipe, (2) ... Branching tube metal fittings, (3) ... Flat surface, (4) (4 ') ... Plating film,
(5) ... Branch holes, (6) ... Low welding, (7) ... Stepped wall.
Claims (1)
壁の一辺の平坦面（３）部に分岐孔（５）を穿設した金
属角パイプからなるフューエル・デリバリパイプ（１）
の該分岐孔（５）に、少なくとも内周面に前記同様の鍍
金膜（４′）を有し、且つ根元端周縁部側に環状の段付
き壁（７）を突設した枝管接続用の分岐筒金具（２）の
先端部（７′）を嵌着すると共に、前記分岐孔（５）の
孔周面部に段付き壁（７）を当接せしめ、更に相互の嵌
着部及び当接部をロー熔着（６）して構成したことを特
徴とするフューエル・デリバリパイプと枝管接続用分岐
筒金具との接続構造。1. A fuel delivery pipe consisting of a metal square pipe having a plating film (4) on the inner peripheral surface in advance and a branch hole (5) formed in a flat surface (3) on one side of the peripheral wall. 1)
For branch pipe connection in which the branch hole (5) has a plating film (4 ') similar to the above on at least the inner peripheral surface thereof, and an annular stepped wall (7) is projected on the peripheral edge of the root end. The tip end portion (7 ') of the branch tubular metal fitting (2) is fitted, and the stepped wall (7) is brought into contact with the hole peripheral surface portion of the branch hole (5). A connection structure between a fuel delivery pipe and a branch pipe fitting for connecting a branch pipe, characterized in that the contact portion is low-welded (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985170183U JPH0640398Y2 (en) | 1985-11-05 | 1985-11-05 | Connection structure between fuel delivery pipe and branch pipe fitting for branch pipe connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985170183U JPH0640398Y2 (en) | 1985-11-05 | 1985-11-05 | Connection structure between fuel delivery pipe and branch pipe fitting for branch pipe connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6281711U JPS6281711U (en) | 1987-05-25 |
| JPH0640398Y2 true JPH0640398Y2 (en) | 1994-10-19 |
Family
ID=31104682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985170183U Expired - Lifetime JPH0640398Y2 (en) | 1985-11-05 | 1985-11-05 | Connection structure between fuel delivery pipe and branch pipe fitting for branch pipe connection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640398Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034877A (en) * | 2001-07-23 | 2003-02-07 | Sanoh Industrial Co Ltd | Method for producing pipe molding and pipe molding |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7421334B2 (en) * | 2019-09-04 | 2024-01-24 | 積水化学工業株式会社 | connecting pipe |
-
1985
- 1985-11-05 JP JP1985170183U patent/JPH0640398Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034877A (en) * | 2001-07-23 | 2003-02-07 | Sanoh Industrial Co Ltd | Method for producing pipe molding and pipe molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6281711U (en) | 1987-05-25 |
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