JP3762467B2 - Connection structure between thin metal pipe and flexible hose - Google Patents
Connection structure between thin metal pipe and flexible hose Download PDFInfo
- Publication number
- JP3762467B2 JP3762467B2 JP30508395A JP30508395A JP3762467B2 JP 3762467 B2 JP3762467 B2 JP 3762467B2 JP 30508395 A JP30508395 A JP 30508395A JP 30508395 A JP30508395 A JP 30508395A JP 3762467 B2 JP3762467 B2 JP 3762467B2
- Authority
- JP
- Japan
- Prior art keywords
- flexible hose
- connection structure
- wall
- cylindrical wall
- metal tube
- 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
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、一般に自動車或いは各種の機械、装置等に給油、給気の供給路として配設される管径２０ｍ／ｍ程度以下の比較的細径からなる金属管と樹脂或いはゴム等による可撓ホースとの接続構造に関するものである。
【０００２】
【従来の技術】
従来、この種の接続構造としては一般に図５に示すように、金属管(P1 ) 側の連結部に一体に設けた鋸歯状壁部(11)とに可撓ホース(P2 ) の端部を差し込んで接続、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、単に金属管(P1 ) の鋸歯状壁部(11)への差し込み構造により、長期に亘る可撓ホース(P2 ) の老化等に伴ってしばしば洩れを招く等、また概して気密性に乏ぼしく、従って主に低圧流体での使用に限定を余儀なくされる問題を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、金属管の円筒壁のなす段付き基部に係合して密嵌状に組込まれた短寸筒状のブッシュ部材によって環状溝を簡易に形成することができると共に、弾性シールリング部材を押圧した密合状の可撓ホースの被着構造によって、長期に亘り連結部での気密性を一層確実となしてその信頼性を高め、高圧流体に対してもその適用範囲を拡めることのできる細径金属管と可撓ホースとの接続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】
本発明は上記目的を達成するため、先端側の円筒壁に連って後部に鍔状の環状膨出壁を設けた金属管に、当該金属管(P) の先端より離れた位置に前記円筒壁のなす段付き基部(4) を設け、該段付き基部(4) に外周を先細傾斜面となす短寸筒状のブッシュ部材を、前記円筒壁の先端を突出させて係合して密嵌状に組込み、且つ該ブッシュ部材の後周端と前記膨出壁とのなす環状溝部に弾性シールリング部材を挿着した金属管側の連結部に、可撓ホースを前記シールリング部材を押圧して密合状に被着して連結構成した細径金属管と可撓ホースとの接続構造を要旨とするものであり、更に前記ブッシュ部材の先端部を、前記円筒壁側の拡径により段付きカシメして固定、形成したり、また前記円筒壁の先端側或いは／及び前記膨出壁の後方側に、可撓ホースの被着状態にあって該可撓ホースと掛合する環状掛支壁を有して形成したり、或いは前記ブッシュ部材を割りブッシュとして形成し、該割りブッシュ部材と前記シールリング部材との間にバックアップリングを介在せしめたりするものである。
【０００６】
以上のように構成されているため、本発明によると所望に応じて環状溝部の位置を前記膨出壁部とブッシュ部材とによって簡易に形成することができ、しかも該溝部に挿着したシールリング部材を押圧して密合状に被着した可撓ホースの構造によって、長期に亘り連結部での気密性を一層確実となして信頼性を高めることができ、また同時に高圧流体に対してもその適用範囲を拡めることができることとなる。
【０００７】
【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は本発明の細径金属管と可撓ホースとの接続構造の一部切欠きによる断面図、図２は他の実施例の同上図１相当図、図３は更に他の実施例の同上図１相当図、図４は更に別の実施例を示す図で、（ａ）は割りブッシュ部材の斜視図、（ｂ）は割りブッシュ部材を用いた場合の半截断面図であって、(1) は管径２０ｍ／ｍ程度以下の比較的細径金属管(P) のなす連結部であり、その先端側の円筒壁(2) に連って僅かに後部に鍔状からなる環状膨出壁(3) をスプール部として設けてなるものである。
【０００８】
また該円筒壁(2) には絞りパンチまたはローリング加工により段付き基部(4) が形成され該段付き基部(4) に外周を先細傾斜面(5')となす金属材もしくは樹脂材による短寸筒状のブッシュ部材(5) を係合して密嵌状に、同時に該ブッシュ部材の後周端と前記膨出壁(3) との間に環状溝(6) を保持して組込み、且つ該溝部に弾性シールリング部材(7) を挿着して前記連結部(1) を形成する。
【０００９】
なお短寸筒状のブッシュ部材(5) を円筒壁(2) のなす段付き基部(4) に係合して固定するには、円筒壁(2) の外径よりブッシュ部材(5) の内径を僅かに大きく形成しておき該円筒壁(2) に圧入したり、あるいはブッシュ部材(5) の挿入後にを僅かに拡管したりして固定する。
【００１０】
かかる状態をもって該連結部に樹脂或いはゴム等による可撓ホース(P')を前記シールリング部材(7) を押圧して密合状に被着して連結構成するものである。
(8) は所望に応じて前記ブッシュ部材(5) を定位置にしっかりと固定するため、該ブッシュ部材の先端部での円筒壁(2) 側の僅かに拡径に伴うカシメ段付き部分（図２、図３) であり、さらに(9) は可撓ホース(P')の被着状態にあって可撓ホースと掛合いして該可撓ホース(P')の引抜方向の力に一層対抗するために設けられた環状掛支壁であり、前記円筒壁(2) の先端側（図３）或いは／及び前記膨出壁(3) の後方側（図１）に位置して設けてなるものである。
【００１１】
また図４（ａ）に示すようにブッシュ部材(5) を割りブッシュとすることにより、円筒壁(2) 側に予め環状掛支壁(9) や段付き部分(8) 等の拡径部分が形成されていてもブッシュ部材の装着が可能となる。この場合には、図４（ｂ）のようにブッシュ部材(5) とシールリング部材(7) との間にバックアップリング(10)を介在せしめると割りブッシュ部材(5) の割れ目にシールリング部材(7) が噛み込みシールリング部材が損傷することを防止できる。なおブッシュ部材(5) の割れ目よりの内部流体の漏れはシールリング部材(7) により十分に防止できる。
【００１２】
【発明の効果】
以上説明したように本発明による細径金属管と可撓ホースとの接続構造は、前記金属管(P) 側の連結部(1) での環状膨出壁(3) と、細径金属管の先端より離して設けたブッシュ部材(5) とによって環状溝(6) を形成して挿着した弾性シールリング部材(7) を押圧して密合状に被着した可撓ホース(P’）との接続構造によって構成するため、前記ブッシュ部材とによって環状溝(6) を簡易に得ることができ、しかも可撓ホース(P’）のなすシールリング部材(7) を押圧した密合状の被着構造によって、長期に亘って連結部(1) での気密性を一層確実となして信頼性を高めることができ、また同時に高圧流体に対してもその適用範囲を拡めることができる等、極めて有用な細径金属管と可撓ホースとの接続構造である。
【図面の簡単な説明】
【図１】本発明の細径金属管と可撓ホースとの接続構造の一部切欠きによる断面図である。
【図２】他の実施例の同上図１相当図である。
【図３】更に他の実施例の同上図１相当図である。
【図４】更に別の実施例を示す図で、（ａ）は割りブッシュ部材の斜視図、（ｂ）は割りブッシュ部材を用いた場合の半截断面図である。
【図５】従来例を示す接続構造の一部切欠き断面図である。
【符号の説明】
１ 連結部
２ 円筒壁
３ 環状膨出壁
４ 段付き基部
５ ブッシュ部材
５' 傾斜面
６ 環状溝
７ シールリング部材
８ 段付き部分
９ 環状掛支壁
Ｐ 金属管
Ｐ' 可撓ホース[0001]
BACKGROUND OF THE INVENTION
In general, the present invention provides a flexible metal tube and resin or rubber having a relatively small diameter of about 20 m / m or less, which is provided as a supply path for oil supply or supply to automobiles or various machines and devices. The present invention relates to a connection structure with a hose.
[0002]
[Prior art]
Conventionally, as a connecting structure of this type, as shown in FIG. 5, generally, the end of the flexible hose (P 2 ) is connected to the sawtooth wall portion (11) provided integrally with the connecting portion on the metal pipe (P 1 ) side. The part was connected and configured.
[0003]
[Problems to be solved by the invention]
However, in such a conventional technique, the metal tube (P 1 ) is often inserted into the serrated wall portion (11) so that it often leaks with the aging of the flexible hose (P 2 ) over a long period of time. And generally has poor airtightness, and therefore has a problem that it is limited to use mainly in low-pressure fluids.
[0004]
The present invention has been made in view of the above-mentioned problems of the prior art, and an annular groove is formed by a short cylindrical bushing member that is engaged with a stepped base portion formed by a cylindrical wall of a metal tube and is closely fitted. Can be easily formed , and the tightly attached flexible hose attachment structure that presses the elastic seal ring member further ensures the airtightness at the connecting portion over a long period of time and increases its reliability. An object of the present invention is to provide a connection structure between a thin metal pipe and a flexible hose that can expand the application range even for a high-pressure fluid.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a metal tube provided with a bowl-shaped annular bulging wall at the rear side thereof connected to the cylindrical wall on the front end side, and the cylinder at a position away from the front end of the metal tube (P). A stepped base (4) formed by a wall is provided, and a short cylindrical bushing member whose outer periphery is a tapered inclined surface is engaged with the stepped base (4) by projecting the tip of the cylindrical wall so as to be dense. A flexible hose is pressed against the seal ring member into the connecting portion on the metal tube side where an elastic seal ring member is inserted into an annular groove formed between the rear peripheral end of the bush member and the bulging wall. Then, the gist of the connection structure of the thin metal pipe and the flexible hose, which are attached in a tightly coupled manner, and the flexible hose, and further, the distal end portion of the bush member by the diameter expansion on the cylindrical wall side It can be fixed and formed by caulking with a step, or it can be flexible on the tip side of the cylindrical wall or / and the rear side of the bulging wall A ring-shaped support wall that engages with the flexible hose, or the bush member is formed as a split bush, and the split bush member and the seal ring member A backup ring is interposed between them.
[0006]
Since it is configured as described above, according to the present invention, the position of the annular groove portion can be easily formed by the bulging wall portion and the bush member as desired, and the seal ring is inserted into the groove portion. The structure of the flexible hose that presses the member and adheres in a tightly packed manner makes it possible to further ensure the airtightness at the connecting portion over a long period of time and to improve the reliability. The application range can be expanded.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a connection structure between a thin metal tube and a flexible hose according to the present invention, and FIG. FIG. 3 is a view corresponding to FIG. 1 of another embodiment, FIG. 4 is a view showing still another embodiment, (a) is a perspective view of a split bushing member, and (b) is a view of FIG. FIG. 2 is a half-sectional view when a split bush member is used. (1) is a connecting portion formed by a relatively thin metal pipe (P) having a pipe diameter of about 20 m / m or less, and a cylindrical wall ( A circular bulging wall (3) having a hook-like shape at the rear is provided as a spool portion.
[0008]
Further, a stepped base (4) is formed on the cylindrical wall (2) by drawing punching or rolling, and the stepped base (4) is made of a metal or resin material whose outer periphery is a tapered inclined surface (5 '). Engage the cylindrical bush member (5) to form a close fit, and at the same time hold the annular groove (6) between the rear peripheral end of the bush member and the bulging wall (3), The elastic seal ring member (7) is inserted into the groove portion to form the connecting portion (1).
[0009]
In order to engage and fix the short cylindrical bushing member (5) to the stepped base (4) formed by the cylindrical wall (2), the bushing member (5) can be fixed from the outer diameter of the cylindrical wall (2). The inner diameter is made slightly larger, and it is fixed by press-fitting into the cylindrical wall (2) or by slightly expanding the tube after inserting the bush member (5).
[0010]
In this state, a flexible hose (P ′) made of resin or rubber or the like is connected to the connecting portion by pressing the seal ring member (7) in a dense manner.
(8) In order to firmly fix the bush member (5) in place as desired, a caulking stepped portion accompanying a slight increase in diameter on the cylindrical wall (2) side at the tip of the bush member ( Fig. 2 and Fig. 3), and (9) is the state in which the flexible hose (P ') is attached and engages with the flexible hose to reduce the force in the pulling direction of the flexible hose (P'). An annular hanging wall provided to counteract further, provided on the tip side (FIG. 3) of the cylindrical wall (2) and / or the rear side (FIG. 1) of the bulging wall (3). It will be.
[0011]
Also, as shown in Fig. 4 (a), the bush member (5) is a split bush, so that the cylindrical wall (2) side is preliminarily expanded in diameter such as an annular support wall (9) or a stepped portion (8). Even if formed, the bush member can be mounted. In this case, as shown in FIG. 4B, when the backup ring (10) is interposed between the bush member (5) and the seal ring member (7), the seal ring member is cracked in the split bush member (5). (7) can prevent the seal ring member from being damaged. The leakage of the internal fluid from the crack of the bush member (5) can be sufficiently prevented by the seal ring member (7).
[0012]
【The invention's effect】
As described above, the connection structure between the thin metal tube and the flexible hose according to the present invention includes the annular bulging wall (3) at the connecting portion (1) on the metal tube (P) side, and the thin metal tube. A flexible hose (P ′) that presses an elastic seal ring member (7) that is inserted by forming an annular groove (6) with a bush member (5) provided away from the tip of ), The annular groove (6) can be easily obtained by the bush member, and the sealing ring member (7) formed by the flexible hose (P ') is pressed into a tightly-fitted shape. With this coating structure, the airtightness at the connecting part (1) can be further ensured over a long period of time and the reliability can be improved. This is an extremely useful connection structure between a thin metal tube and a flexible hose.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a connection structure between a thin metal tube and a flexible hose according to the present invention, partially cut away.
FIG. 2 is a view corresponding to FIG. 1 of another embodiment.
FIG. 3 is a view corresponding to FIG. 1 of another embodiment.
FIGS. 4A and 4B are views showing still another embodiment, in which FIG. 4A is a perspective view of a split bush member, and FIG. 4B is a half-sectional view when a split bush member is used.
FIG. 5 is a partially cutaway cross-sectional view of a connection structure showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30508395A JP3762467B2 (en) | 1995-10-30 | 1995-10-30 | Connection structure between thin metal pipe and flexible hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30508395A JP3762467B2 (en) | 1995-10-30 | 1995-10-30 | Connection structure between thin metal pipe and flexible hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09126374A JPH09126374A (en) | 1997-05-13 |
| JP3762467B2 true JP3762467B2 (en) | 2006-04-05 |
Family
ID=17940913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30508395A Expired - Fee Related JP3762467B2 (en) | 1995-10-30 | 1995-10-30 | Connection structure between thin metal pipe and flexible hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3762467B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4535479B2 (en) * | 2001-02-01 | 2010-09-01 | 臼井国際産業株式会社 | Connection structure between thin metal pipe and flexible hose |
| JP3970633B2 (en) * | 2002-02-21 | 2007-09-05 | 三桜工業株式会社 | Metal tube terminal connection structure |
| JP5025076B2 (en) | 2004-09-24 | 2012-09-12 | ニッタ株式会社 | Resin pipe connection structure |
| US11608918B2 (en) * | 2020-05-29 | 2023-03-21 | Cooper-Standard Automotive Inc. | Hose connector |
-
1995
- 1995-10-30 JP JP30508395A patent/JP3762467B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09126374A (en) | 1997-05-13 |
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