JP4827153B2 - Reinforcement structure for connecting end of thin-walled thin metal pipe - Google Patents
Reinforcement structure for connecting end of thin-walled thin metal pipe Download PDFInfo
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- JP4827153B2 JP4827153B2 JP2000400923A JP2000400923A JP4827153B2 JP 4827153 B2 JP4827153 B2 JP 4827153B2 JP 2000400923 A JP2000400923 A JP 2000400923A JP 2000400923 A JP2000400923 A JP 2000400923A JP 4827153 B2 JP4827153 B2 JP 4827153B2
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Description
【０００１】
【発明の属する技術分野】
本発明は、一般に自動車あるいは各種の機械、装置などなどに給油、給気の供給路として配設される管径２０ｍｍ程度以下にして肉厚１．２ｍｍ程度以下の比較的薄肉細径金属配管にあって、例えば外側に金属細線によって編組されたブレードを被覆した耐圧ゴムホースあるいは樹脂チューブなどとの接続構造に関連した前記薄肉細径金属配管の接続端部の補強方法およびその構造に関するものである。
【０００２】
【従来の技術】
従来、この種の補強構造としては例えば図１０、図１１あるいは図１２に示すように金属配管（Ｐ３）の接続端部付近の内部に、短寸状の補強管（Ｐ４）をその全長に亘って単に同一径となす挿入部を、挿入のための関係寸法をもって図１０に示すように挿着するか、前記配管（Ｐ３）側に補強管（Ｐ４）の挿入する内部の端周縁部に位置して段部（Ｐ′３）を設けて図１１のように係支して挿着するか、あるいは補強管（Ｐ４）の挿入状態をもって図１２のように金属配管（Ｐ３）側と相互にカシメ（５）して係支して挿着するか、いずれも単に緩着状の挿入に伴って前記挿着して構成されていた。
【０００３】
【発明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、図１０によるものにあっては人為的な押入れによる緩着状の挿着に関連して、相互の挿入代に加工上のバラツキによる不具合を招いてその位置を一定となすことが困難であった。また図１１にあっては単に係支方向の前記段部（Ｐ′３）に関連して挿入後にその係支部での位置ずれを生ぜしめ易く、かつ端部からの一定位置での段部加工が煩わしいものであった。さらに図１２によるものにあっては金属配管（Ｐ３）と補強管（Ｐ４）とに亘るカシメ作業をしばしば不確実となし、同時にカシメ時のチャックによる挟持によって配管（Ｐ３）側の外周面での耐熱鍍金層に損傷を招くなどの問題を有するものであった。またこれらいずれも補強管（Ｐ４）での固定を不安定となしてその移動を生ずるなどの問題も有するものであった。
【０００４】
本発明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、補強管のなす挿入部の一方端部のみに僅かに拡径あるいは／および変形して設けた圧嵌壁部をもって、金属配管の接続端部付近の内部に圧嵌、係合して固定することにより、一部における前記圧嵌壁部での固定構造によって、前記補強管の圧嵌係合作業を至極簡易に行うことができ、同時に他方端部からの圧入の位置決めを一定となしてそのバラツキをなくすことができ、更に金属配管の内周面での固定を確実となすことのできる薄肉細径金属配管の接続端部の補強方法およびその構造を提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
上記目的を達成するため本発明の第１の実施態様は、短寸状からなる補強管の一方端部を僅かに拡径あるいは／および変形して圧嵌壁部を形成し、金属配管内に前記補強管の他方端部より挿入し、該金属配管の内周面に前記圧嵌壁部をもって圧嵌固定し、前記金属配管の接続端部付近に所望形状の連結部を形成する薄肉細径金属配管の接続端部の補強方法を特徴とするものである。
【０００６】
また本発明の第２の実施態様は、金属配管の接続端部付近に、所望形状の連結部を形成する二重壁による接続端部構造において、金属配管のなす接続端部付近の内部に、短寸状からなる補強管のなす圧入部の一方端部に形成した僅かに拡径あるいは／および変形した圧嵌壁部をもって前記配管の内周面に圧嵌、固定して構成した薄肉細径金属配管の接続端部の補強構造を要旨とするものであり、更に前記圧嵌壁部を、その横断面を真円、楕円あるいは多角、波形の円形状に形成してなるものである。
【０００７】
本発明は以上のように構成されているため、僅かに拡径あるいは／および変形した前記補強管の圧嵌壁部のなす一方端部のみでの圧嵌、固定構造によって、該圧嵌壁部の圧嵌代の加工を簡易に得ることができ、また容易な管端部だけの圧入作業と、金属配管の接続端部からの一定したバラツキのない位置決めの容易性に関連して確実に固定することができることとなる。
【０００８】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて説明すれば、図１は本発明の薄肉細径金属配管の接続端部の補強構造の一実施例を示す圧嵌固定状態の一部切欠きによる拡大断面図、図２は図１の補強管単体の断面図、図３は金属配管の接続端部の補強構造の他の実施例を示す圧嵌固定状態の一部切欠きによる拡大断面図、図４は図３の補強管単体の断面図、図５は図２Ａ−Ａ線の全体の断面図、図６は他の実施例の同上図５相当図、図７は更に他の実施例の同上図５相当図、図８は図１による連結部の形成に伴う金属配管の接続状態の一実施例を示す一部切欠き断面図、図９は金属配管の接続状態の他の実施例を示す同上図８相当図であって、（Ｐ１）は薄肉細径からなる金属配管であり、前記管径および肉厚をもって配設されるものである。
【０００９】
また（Ｐ２）は短寸状からなる補強管であり、圧入部の一方端部（圧入方向における後端部）にその径方向に０．０５ｍｍ乃至０．３ｍｍ程度に僅かに拡径あるいは／および変形し、かつその長さが管径の１〜２倍程度である圧嵌壁部（Ｐ′２）を設け、該圧嵌壁部のみをもって前記金属配管（Ｐ１）のなす接続端部付近の内部にあって、その内周面（Ｐ′１）に前記補強管（Ｐ２）の他方端部からの圧入による圧嵌固定して二重壁部（１）となして構成するものである。
【００１０】
この点について寸法的に説明すれば、補強管（Ｐ２）の接続端部における圧嵌壁部（Ｐ′２）の最大外径をφＤ１、その他の部分の外径をφＤ２、金属配管（Ｐ１）の内径をφｄとすると、φＤ１＞φｄ＞φＤ２の関係が成立ち、前記圧嵌壁部（Ｐ′２）で金属配管（Ｐ１）に圧嵌固定されるとともに、前記圧嵌壁部（Ｐ′２）以外では金属配管（Ｐ１）の内周面と微小間隙、例えば０．０５〜０．２ｍｍ程度の間隙を有するものである。
【００１１】
なお、補強管（Ｐ２）の圧嵌壁部（Ｐ′２）の先端部に図３および図４のように径方向に延長する環状フランジ（３）を一体に設けることにより、金属配管（Ｐ１）への挿入、圧入作業が容易となるとともに、該環状フランジ（３）がストッパとして働き金属配管（Ｐ１）との位置決めも容易となる。
【００１２】
また（２）は相手ゴムホースあるいは樹脂チューブまたは相手取付け部材などとの連結部であり、前記圧嵌壁部（Ｐ′２）を含む二重壁部（１）をもって間隔を保持した環状の櫛歯壁、ブリッヂ壁、スプール壁などの膨出壁あるいは鋸歯壁などの前記連結部（２）が形成され、該連結部が相手ゴムホースあるいは端金具などと図８および図９のように接続されるのである。
【００１３】
一方本発明に係る薄肉細径金属配管の接続端部の補強方法を説明すると、先ず短寸状からなる補強管（Ｐ２）の一方端部を例えば０．０５〜０．３ｍｍ程度僅かに拡径あるいは／および変形して圧嵌壁部（Ｐ′２）を形成する。ついで該補強管（Ｐ２）より長尺の金属配管（Ｐ１）内に前記補強管をその他方端部より挿入し、該金属配管（Ｐ１）の内周面（Ｐ′１）に前記圧嵌壁部（Ｐ′２）をもって圧嵌固定して、前記金属配管（Ｐ１）の接続端部付近に所望長さ、所望形状の連結部を形成することができるものである。
【００１４】
【発明の効果】
以上説明したように本発明による薄肉細径金属配管の接続端部の補強構造は、前記補強管（Ｐ２）の一方端部のみに設けた僅かに拡径あるいは／および変形した前記圧嵌壁部（Ｐ′２）による金属配管（Ｐ１）の接続端部付近の内部に圧嵌固定して二重壁部（１）となして構成するため、前記圧嵌壁部（Ｐ′２）のなす一方端部のみでの固定構造によって、該圧嵌壁部の圧嵌代の加工を簡易となし、また容易な圧入作業と金属配管（Ｐ１）の接続端部からの一定した位置決めの容易とによって確実に固定することができるなど、極めて有用な薄肉細径金属配管の接続端部の補強方法およびその構造である。
【図面の簡単な説明】
【図１】図１は本発明の薄肉細径金属配管の接続端部の補強構造の一実施例を示す圧嵌固定状態の一部切欠きによる拡大断面図である。
【図２】図１の補強管単体の断面図である。
【図３】金属配管の接続端部の補強構造の他の実施例を示す圧嵌固定状態の一部切欠きによる拡大断面図である。
【図４】図３の補強管単体の断面図である。
【図５】図２Ａ−Ａ線の補強管の断面図である。
【図６】他の実施例の同上図５相当図である。
【図７】更に他の実施例の同上図５相当図である。
【図８】図１による連結部の形成に伴う金属配管の接続状態の一実施例を示す一部切欠き断面図である。
【図９】金属配管の接続状態の他の実施例を示す同上図８相当図である。
【図１０】従来例を示す補強構造の挿入状態の一部切欠き断面図である。
【図１１】他の従来例を示す同上図１０相当図である。
【図１２】更に他の従来例を示す同上図１０相当図である。
【符号の説明】
１ 二重壁部
２ 連結部
３ フランジ
Ｐ１ 金属配管
Ｐ′１ 内周面
Ｐ２ 補強管
Ｐ′２ 圧嵌壁部[0001]
BACKGROUND OF THE INVENTION
The present invention is generally applied to a relatively thin-walled thin metal pipe having a diameter of about 20 mm or less and a thickness of about 1.2 mm or less, which is provided as a supply path for oil supply or air supply to automobiles or various machines and devices. For example, the present invention relates to a method for reinforcing the connection end portion of the thin-walled thin metal pipe related to a connection structure with a pressure-resistant rubber hose or a resin tube covered with a braided braided metal thin wire on the outside and the structure thereof.
[0002]
[Prior art]
Conventionally, as this type of reinforcing structure, for example, as shown in FIG. 10, FIG. 11 or FIG. 12, a short reinforcing pipe (P 4 ) is provided in the vicinity of the connection end of the metal pipe (P 3 ). 10 is inserted into the insertion portion having the same diameter as shown in FIG. 10 with the relevant dimensions for insertion, or the inner end where the reinforcing pipe (P 4 ) is inserted on the pipe (P 3 ) side. A stepped portion (P ′ 3 ) is provided at the peripheral edge and is engaged and inserted as shown in FIG. 11, or the reinforcing pipe (P 4 ) is inserted into a metal pipe (P 3 ) Clamping (5) with each other and engaging and inserting them, or both of them were simply inserted with loose insertion.
[0003]
[Problems to be solved by the invention]
However, in such a conventional technique, in the case of FIG. 10, in relation to the loose insertion by artificial push-in, there is a problem due to processing variations in mutual insertion allowance. It was difficult to keep the position constant. Further, in FIG. 11, the step portion processing at the fixed position from the end portion is easily caused after the insertion in relation to the step portion (P ′ 3 ) in the direction of the support portion. Was annoying. Further, in the case of FIG. 12, the caulking operation between the metal pipe (P 3 ) and the reinforcing pipe (P 4 ) is often uncertain, and at the same time, the outer periphery on the pipe (P 3 ) side is clamped by the chuck during caulking. The heat-resistant plating layer on the surface has problems such as damage. In addition, both of these have problems such that the fixing with the reinforcing pipe (P 4 ) becomes unstable and the movement occurs.
[0004]
The present invention has been made in view of the above-described problems of the prior art, and has a press-fitting wall portion provided with a slightly enlarged diameter and / or deformation at only one end portion of the insertion portion formed by the reinforcing tube. By press-fitting, engaging and fixing in the vicinity of the connection end of the part, it is possible to extremely easily perform the press-fitting engagement work of the reinforcing pipe by a fixing structure at the part of the press-fitting wall. At the same time, the positioning of the press-fitting from the other end can be made constant and the variation can be eliminated, and the connection end of the thin-walled thin metal pipe that can be securely fixed on the inner peripheral surface of the metal pipe It is an object of the present invention to provide a reinforcing method and a structure thereof.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to a first embodiment of the present invention, a compression fitting wall portion is formed by slightly expanding or / and deforming one end portion of a short-sized reinforcing tube, and is formed in a metal pipe. Thin-walled thin diameter that is inserted from the other end of the reinforcing pipe, and is press-fitted and fixed to the inner peripheral surface of the metal pipe with the press-fitting wall, and a connection part having a desired shape is formed near the connection end of the metal pipe. It is characterized by a method of reinforcing a connection end of a metal pipe.
[0006]
Further, the second embodiment of the present invention is a connection end structure with a double wall that forms a connection part of a desired shape in the vicinity of the connection end of the metal pipe, in the vicinity of the connection end formed by the metal pipe, A thin-walled thin diameter constructed by press-fitting and fixing to the inner peripheral surface of the pipe with a slightly expanded or / and deformed press-fitting wall portion formed at one end of a press-fit portion formed by a short-sized reinforcing pipe The gist of the reinforcing structure of the connection end of the metal pipe, and the press-fitting wall portion is formed by forming a cross section of a perfect circle, an ellipse, a polygon, or a corrugated circle.
[0007]
Since the present invention is configured as described above, the press-fitting wall portion is formed by the press-fitting and fixing structure only at one end portion of the press-fitting wall portion of the reinforcing pipe that has been slightly enlarged or / and deformed. The press fitting allowance can be easily obtained, and it is fixed securely in relation to easy press-fitting work only at the pipe end and positioning without any variation from the connection end of the metal pipe. Will be able to.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a partially cut-away view of a press-fitted and fixed state showing an embodiment of a reinforcing structure for a connection end of a thin-walled thin metal pipe according to the present invention. 2 is an enlarged cross-sectional view, FIG. 2 is a cross-sectional view of the reinforcing pipe alone in FIG. 1, FIG. 3 is an enlarged cross-sectional view with a partially cut-out in a press-fit fixed state showing another embodiment of the reinforcing structure of the connection end of the metal pipe, 4 is a cross-sectional view of a single reinforcing tube of FIG. 3, FIG. 5 is a cross-sectional view of the entire line of FIG. 2A-A, FIG. 6 is a view corresponding to FIG. 5 of another embodiment, and FIG. 5 is equivalent to FIG. 5, FIG. 8 is a partially cutaway sectional view showing an embodiment of the connection state of the metal pipe in connection with the formation of the connecting portion in FIG. 1, and FIG. 9 is another embodiment of the connection state of the metal pipe. FIG. 8 is a view corresponding to FIG. 8, in which (P 1 ) is a metal pipe having a thin and thin diameter, and is arranged with the pipe diameter and thickness.
[0009]
Further, (P 2 ) is a short-sized reinforcing pipe, and is slightly expanded in diameter to about 0.05 mm to 0.3 mm in the radial direction at one end portion (rear end portion in the press-fitting direction) of the press-fitting portion. Further, a connecting end formed by the metal pipe (P 1 ) is provided with a press-fitting wall (P ′ 2 ) that is deformed and has a length that is about 1 to 2 times the pipe diameter. It is in the vicinity of the inside, and is configured to be a double wall portion (1) by being press-fitted and fixed to the inner peripheral surface (P ′ 1 ) by press-fitting from the other end portion of the reinforcing pipe (P 2 ). It is.
[0010]
If this point is described dimensionally, the maximum outer diameter of the press-fitting wall (P ′ 2 ) at the connection end of the reinforcing pipe (P 2 ) is φD 1 , the outer diameter of the other part is φD 2 , and the metal pipe When the inner diameter of (P 1 ) is φd, a relationship of φD 1 >φd> φD 2 is established, and the press fitting wall portion (P ′ 2 ) is press fitted and fixed to the metal pipe (P 1 ). Other than the press-fitting wall portion (P ′ 2 ), the metal pipe (P 1 ) has a minute gap, for example, a gap of about 0.05 to 0.2 mm.
[0011]
It should be noted that an annular flange (3) extending in the radial direction as shown in FIGS. 3 and 4 is integrally provided at the distal end portion of the press-fitting wall portion (P ′ 2 ) of the reinforcing tube (P 2 ) so that a metal pipe ( Insertion into P 1 ) and press-fitting work are facilitated, and the annular flange (3) serves as a stopper and positioning with the metal pipe (P 1 ) is facilitated.
[0012]
(2) is a connecting portion with a mating rubber hose, resin tube, mating mounting member or the like, and an annular comb tooth having a double wall portion (1) including the press-fitting wall portion (P ′ 2 ). Since the connecting part (2) such as a wall, a bridge wall, a bulging wall such as a spool wall or a sawtooth wall is formed, and the connecting part is connected to a mating rubber hose or an end fitting as shown in FIGS. is there.
[0013]
On the other hand, the reinforcing method of the connecting end of the thin-walled thin metal pipe according to the present invention will be described. First, the one end of the reinforcing pipe (P 2 ) having a short shape is slightly expanded, for example, by about 0.05 to 0.3 mm. The pressure fitting wall portion (P ′ 2 ) is formed by deformation or diameter. Then inserted from its other end the reinforcing tube than elongated metal pipe (P 1) in the reinforcing tube (P 2), wherein the said metal pipe (P 1) the inner circumferential surface of the (P '1) A fitting portion having a desired length and a desired shape can be formed in the vicinity of the connecting end portion of the metal pipe (P 1 ) by press-fitting and fixing with the fitting wall portion (P ′ 2 ).
[0014]
【The invention's effect】
As described above, the reinforcing structure of the connecting end portion of the thin-walled thin metal pipe according to the present invention has the slightly expanded or / and deformed press-fitting wall provided only at one end portion of the reinforcing pipe (P 2 ). Since the double wall portion (1) is configured by being press-fitted and fixed inside the vicinity of the connecting end portion of the metal pipe (P 1 ) by the portion (P ′ 2 ), the press-fit wall portion (P ′ 2 ) The fixing structure with only one end portion makes it easy to process the press-fitting allowance of the press-fitting wall portion, and allows easy press-fitting work and constant positioning from the connecting end portion of the metal pipe (P 1 ). This is an extremely useful method for reinforcing the connecting end of a thin-walled thin metal pipe and its structure, such that it can be reliably fixed easily.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view with a partially cutout in a press-fitted and fixed state showing an embodiment of a reinforcing structure of a connecting end portion of a thin and thin metal pipe according to the present invention.
2 is a cross-sectional view of a single reinforcing tube in FIG. 1;
FIG. 3 is an enlarged cross-sectional view with a partially cutout in a press-fitted and fixed state showing another embodiment of the reinforcing structure of the connection end of the metal pipe.
4 is a cross-sectional view of a single reinforcing tube in FIG. 3;
FIG. 5 is a cross-sectional view of a reinforcing tube taken along line 2A-A in FIG.
FIG. 6 is a view corresponding to FIG. 5 of another embodiment.
FIG. 7 is a view corresponding to FIG. 5 of still another embodiment.
8 is a partially cutaway cross-sectional view showing an embodiment of a connection state of metal pipes accompanying the formation of a connecting portion according to FIG. 1;
FIG. 9 is a view corresponding to FIG. 8 showing another embodiment of the connection state of the metal pipe.
FIG. 10 is a partially cutaway sectional view of a reinforcing structure showing a conventional example in an inserted state.
FIG. 11 is a view corresponding to FIG. 10 showing another conventional example.
12 is a view corresponding to FIG. 10 showing still another conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000400923A JP4827153B2 (en) | 2000-12-28 | 2000-12-28 | Reinforcement structure for connecting end of thin-walled thin metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000400923A JP4827153B2 (en) | 2000-12-28 | 2000-12-28 | Reinforcement structure for connecting end of thin-walled thin metal pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002195461A JP2002195461A (en) | 2002-07-10 |
| JP4827153B2 true JP4827153B2 (en) | 2011-11-30 |
Family
ID=18865427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000400923A Expired - Fee Related JP4827153B2 (en) | 2000-12-28 | 2000-12-28 | Reinforcement structure for connecting end of thin-walled thin metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4827153B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3798086B2 (en) * | 1995-11-16 | 2006-07-19 | 臼井国際産業株式会社 | Connection structure between thin-walled thin metal tube and pressure-resistant rubber hose and connection method thereof |
| JP4140869B2 (en) * | 1998-09-07 | 2008-08-27 | コスモ工機株式会社 | Pipe fitting |
-
2000
- 2000-12-28 JP JP2000400923A patent/JP4827153B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002195461A (en) | 2002-07-10 |
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