JP2001012663A - Connecting structure of narrow metal pipe for high pressure fluid to pressure rubber hose - Google Patents
Connecting structure of narrow metal pipe for high pressure fluid to pressure rubber hoseInfo
- Publication number
- JP2001012663A JP2001012663A JP11179012A JP17901299A JP2001012663A JP 2001012663 A JP2001012663 A JP 2001012663A JP 11179012 A JP11179012 A JP 11179012A JP 17901299 A JP17901299 A JP 17901299A JP 2001012663 A JP2001012663 A JP 2001012663A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- rubber hose
- resistant rubber
- 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.)
- Granted
Links
Landscapes
- Power Steering Mechanism (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Gasket Seals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高圧流体用の細径
金属管と耐圧ゴムホースとの接続構造に関するものであ
り、特にパワー・ステアリング配管、あるいはブレーキ
配管などの高圧流体のために開発された細径金属管と耐
圧ゴムホースとの接続構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose, and has been developed especially for high-pressure fluid such as a power steering pipe or a brake pipe. The present invention relates to a connection structure between a small-diameter metal tube and a pressure-resistant rubber hose.
【０００２】[0002]
【従来の技術】従来この種の接続構造としては図６に示
すように、金属管Ｐ１の端部にニップル部材１１をろう
付けＷし、該ニップル部材１１の先端側の接続端部付近
に設けた切削加工により形成された鋸歯状壁部１１−１
に耐圧ゴムホース１２を被着した状態で、その底壁部１
３−１をニップル部材１１の段部１１−２に掛支せしめ
た外側に配設した有底筒状のソケット部材１３により接
続端部付近の被着部分を周囲よりカシメ１４て接続構成
していた。なお１２−１は耐圧ゴムホース１２の外側に
被覆された金属細線によって編組されたブレードであっ
て、外部からの衝撃により耐圧ゴムホースが損傷を受け
ることを防止するために設けられているものである。As shown in FIG. 6 is a connection structure of a conventional this type, the nipple member 11 to the end of the metal pipe P 1 and brazed W, near the connecting end of the tip end of the nipple member 11 Serrated wall portion 11-1 formed by the provided cutting process
The pressure-resistant rubber hose 12 is attached to the bottom wall 1
3-1 is connected to the stepped portion 11-2 of the nipple member 11 and is connected to the attached portion near the connection end by caulking 14 from the periphery by a bottomed cylindrical socket member 13 disposed outside. Was. Reference numeral 12-1 denotes a braided braid made of a thin metal wire coated on the outside of the pressure-resistant rubber hose 12, which is provided to prevent the pressure-resistant rubber hose from being damaged by an external impact.
【０００３】また図７に示すように、金属管Ｐ１側の接
続端部付近に連結部１１を形成し、該連結部１１の内部
に短寸状の内管Ｐ′を挿入もしくは圧入、焼嵌めあるい
は冷嵌めなどにより嵌合状または圧嵌状に挿着して二重
壁Ｐ″となし、さらに該二重壁部における金属管Ｐ１と
内管Ｐ′とに亘って連結部１１を外方より径方向の内方
に向かってロールによる転造加工あるいは押し型による
プレス加工などの塑性加工により複数の櫛歯面１５を形
成してなるものである。そして前記連結部１１に耐圧ゴ
ムホース１２を挿入し、この挿入状態で底壁部１３−１
を前記金属管Ｐ１側の環溝１６に掛止した有底筒状のソ
ケット部材１３を被着し、該ソケット部材１３を円周方
向の外方より径方向の内方に向かってカシメ１４て相互
に連設部分を固定して接続構成するものである。[0003] As shown in FIG. 7, to form a connecting portion 11 near the connection end of the metal pipe P 1 side, inserted or pressed into the short-sized shaped inner tube P 'inside of the connecting portion 11, baked fitting or cold fitting fitting shape or press fit shape inserted to double wall P "ungated due, the connecting portion 11 over a further metal pipe P 1 and the inner pipe P 'and in said double wall portion A plurality of comb tooth surfaces 15 are formed by plastic working such as rolling using a roll or pressing using a pressing die from the outside toward the inside in the radial direction. 12 is inserted and the bottom wall 13-1 is inserted in this inserted state.
The deposited said metal pipe P 1 side of the ring groove 16 bottomed tubular socket member 13 which is hooked to, the socket member 13 inward in the radial direction from the outer circumferential caulking 14 The connecting portions are fixedly connected to each other for connection.
【０００４】さらに図８では前記の図７と同様に構成さ
れた二重壁Ｐ″部の内管Ｐ′の端部付近に予めスプール
１７−１を成形しておき該スプール１７−１に底壁部１
３−１を当接した後、該底壁部１３−１の外面に当接せ
しめる第２のスプール１７−２を成形することによって
金属管Ｐ１にソケット部材１３を掛止したものであり、
その後図７と同様にして耐圧ゴムホース１２を挿入して
接続構成するものである。Further, in FIG. 8, a spool 17-1 is formed in advance near the end of the inner tube P 'of the double wall P "portion constructed in the same manner as in FIG. Wall 1
3-1 After the abutting, is obtained by hooking the socket member 13 to the metal pipe P 1 by forming a second spool 17-2 allowed to contact the outer surface of the bottom wall portion 13-1,
Thereafter, a pressure-resistant rubber hose 12 is inserted and connected in the same manner as in FIG.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記し
た従来技術によれば通常の内圧の流体に対しては満足で
きる耐圧性、耐疲労性や耐引抜き性を有しているが、例
えばパワー・ステアリング配管内を流れる５０〜１００
ｋｇ／ｃｍ２程度の高圧作動油に対して用いられる肉厚
の中央部に樹脂繊維あるいは金属線などのブレードが埋
設された耐圧ゴムホースに使用した場合には耐圧性、耐
疲労性や耐引抜き性が十分でないことが分かった。その
理由は、ミクロ的に見ると耐圧ゴムホースに使用されて
いるゴムは多孔質の材料であって、金属管あるいはニッ
プル部材の外周面と耐圧ゴムホースの内周面との間の境
界面に大きな内圧がかかった場合、高圧の作動油は長時
間の間に微量ずつ滲み出る傾向がある。特に金属管ある
いはニップル部材の外周面は平滑面、多くはほぼ鏡面に
なるように形成されているためにこの滲み出し現象は避
けられない傾向である。However, according to the above-mentioned prior art, although it has satisfactory pressure resistance, fatigue resistance and pull-out resistance with respect to a fluid having a normal internal pressure, for example, power steering 50-100 flowing in the pipe
Pressure resistance, fatigue resistance and pull-out resistance when used in a pressure-resistant rubber hose with a resin fiber or metal wire braid embedded at the center of the wall thickness used for high-pressure hydraulic oil of about kg / cm 2 Turned out not to be enough. The reason is that, when viewed microscopically, the rubber used for the pressure-resistant rubber hose is a porous material, and a large internal pressure is applied to the boundary between the outer peripheral surface of the metal tube or the nipple member and the inner peripheral surface of the pressure-resistant rubber hose. , The high-pressure hydraulic oil tends to ooze a small amount over a long period of time. In particular, since the outer peripheral surface of the metal tube or the nipple member is formed so as to have a smooth surface and in most cases a substantially mirror surface, this seepage phenomenon tends to be unavoidable.
【０００６】本発明は、従来のかかる問題を解消したも
のであって、金属管あるいはニップル部材の接続端部付
近の外周面の少なくとも一部に特殊形状と寸法を有する
凹凸部を形成することによって前記境界面の長さを実質
的に長くしてラビリンスシール効果をも発揮せしめ、高
圧流体に対して用いても優れた耐圧性、耐疲労性や耐引
抜き性を発揮することができる高圧流体用の細径金属管
と耐圧ゴム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。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. By forming an uneven portion having a special shape and dimensions on at least a part of an outer peripheral surface near a connection end of a metal pipe or a nipple member. For a high-pressure fluid capable of exhibiting a labyrinth sealing effect by substantially increasing the length of the boundary surface and exhibiting excellent pressure resistance, fatigue resistance and pull-out resistance even when used for a high-pressure fluid. It is an object of the present invention to provide a connection structure between a small-diameter metal pipe and a pressure-resistant rubber hose.
【０００７】[0007]
【課題を解決するための手段】本発明者は、金属管ある
いはニップル部材の外周面の少なくとも一部に凹凸部を
形成するとともに、該凹凸部の高さとピッチとを特定の
範囲に定めることによって上記した問題点を解決し得る
ことを見出し本発明を完成するに至った。Means for Solving the Problems The present inventor has formed an uneven portion on at least a part of the outer peripheral surface of a metal tube or a nipple member, and determined the height and pitch of the uneven portion in a specific range. The inventors have found that the above problems can be solved, and have completed the present invention.
【０００８】したがって本発明に係る高圧流体用の細径
金属管と耐圧ゴムホースとの接続構造は、内管が嵌合状
または圧嵌状に挿着された金属管の接続端部付近または
該金属管の端部が接合されたニップル部材の接続端部付
近の外周面の少なくとも一部に、高さ（ｈ）が０．０２
〜０．２ｍｍ、かつピッチ（ｐ）がｈ以上で２ｈ以下の
リング状または螺旋状のほぼ三角形状の凹凸部を有する
連結部を形成し、該連結部に耐圧ゴムホースを被着した
状態で底壁部を前記金属管またはニップル部材側に掛止
した有底筒状のソケット部材により相互の連設部分をカ
シメ固定して構成したことを特徴とするものであり、ま
た前記金属管の接続端部付近に挿着された内管に該接続
端部付近とともに凹凸部が形成され、さらに前記有底筒
状のソケット部材の底壁部は前記金属管に成形されたダ
ブルスプールにより掛止されており、さらにまた前記内
管が嵌合状または圧嵌状に挿着された金属管の連結部に
は、軸方向に間隔をおいて大きなピッチで膨出壁、凹凸
壁もしくは鋸歯壁が形成され、該膨出壁、凹凸壁もしく
は鋸歯壁にさらに前記凹凸部が形成されるか、または前
記ニップル部材の連結部には、軸方向に間隔をおいて大
きいピッチで断面ほぼ鋸歯状あるいは螺旋状の凹凸係合
周面が形成され、かつ該断面ほぼ鋸歯状あるいは螺旋状
の凹凸係合周面にさらに前記凹凸部が形成されることを
特徴とする。Therefore, the connection structure between the small-diameter metal pipe for high-pressure fluid and the pressure-resistant rubber hose according to the present invention is formed in the vicinity of the connection end of the metal pipe in which the inner pipe is fitted or press-fitted, or in the vicinity of the metal. The height (h) of at least a part of the outer peripheral surface near the connection end of the nipple member to which the end of the pipe is joined is 0.02.
A connection portion having a ring-shaped or spiral substantially triangular uneven portion having a pitch (p) of not less than h and not more than 2 h is formed, and a pressure-resistant rubber hose is attached to the connection portion. A wall portion is formed by caulking and fixing mutually connected portions by a bottomed cylindrical socket member hooked to the metal tube or the nipple member side, and a connection end of the metal tube is provided. An uneven portion is formed on the inner tube inserted near the portion together with the connection end portion, and the bottom wall of the bottomed cylindrical socket member is hooked by a double spool formed on the metal tube. In addition, a bulging wall, an uneven wall, or a sawtooth wall is formed at a large pitch in the axial direction at a connection portion of the metal tube in which the inner tube is inserted in a fitting shape or a press fitting shape. The bulging wall, the uneven wall or the sawtooth wall. The concave / convex portion is formed, or the connection portion of the nipple member is formed with a substantially saw-tooth or spiral concave / convex engaging peripheral surface at a large pitch at a distance in the axial direction. The uneven portion is further formed on a saw-tooth or spiral uneven peripheral engagement surface.
【０００９】本発明において内管が嵌合状または圧嵌状
に挿着された金属管の接続端部付近または該金属管の端
部が接合されたニップル部材の接続端部付近の外周面の
少なくとも一部に形成したリング状または螺旋状のほぼ
三角形状の凹凸部の高さをｈとし、凹凸部間のピッチを
ｐとした場合、高さ（ｈ）を０．０２〜０．２ｍｍと
し、かつｈ≦ｐ≦２ｈとする必要がある。その理由は以
下の通りであるが、その前提として高圧流体用に使用さ
れる耐圧ゴムホースの特性について説明する。前述した
通り高圧流体用の耐圧ゴムホースは、肉厚のほぼ中央部
に樹脂繊維あるいは金属線などからなるブレードが埋設
され、このブレードによって内圧に伴うゴムホースの変
形や移動を防いでいる。このような構成の高圧流体用の
耐圧ゴムホースは、肉厚の約１／２に相当するほぼ中央
部に埋設されたブレードの近辺では弾性変形に制約を受
け、厚肉であるもののゴムに特有の特性である弾性変形
し易いという特徴は、耐圧ゴムホースの肉厚の半分程度
でしか発揮され図、各表面はさらにその約１／２程度、
すなわち肉厚の約１／４程度した発揮されないのであ
る。In the present invention, the outer peripheral surface near the connection end of the metal pipe into which the inner pipe is fitted or press-fitted or near the connection end of the nipple member to which the end of the metal pipe is joined is attached. The height (h) is 0.02 to 0.2 mm, where h is the height of the ring-shaped or spiral substantially triangular irregularities formed at least in part, and p is the pitch between the irregularities. And h ≦ p ≦ 2h. The reason is as follows. As a premise, the characteristics of the pressure-resistant rubber hose used for the high-pressure fluid will be described. As described above, the pressure-resistant rubber hose for high-pressure fluid has a blade made of a resin fiber, a metal wire, or the like embedded in a substantially central portion of its thickness, and the blade prevents deformation and movement of the rubber hose due to internal pressure. The pressure-resistant rubber hose for a high-pressure fluid having such a configuration is restricted by elastic deformation in the vicinity of a blade buried almost in the center corresponding to about の of the wall thickness, and is thick, but is specific to rubber. The characteristic of being easily elastically deformed, which is a characteristic, is exhibited only in about half of the thickness of the pressure-resistant rubber hose.
That is, about 1/4 of the thickness is not exhibited.
【００１０】さてこのような耐圧ゴムホースの特徴を基
にして、前記数値限定の理由は以下の通りとなる。耐引
抜き力と耐圧性は凹凸部の高さ（ｈ）を大きくし、かつ
ピッチ（ｐ）を短くした方が向上する。これは耐圧ゴム
ホースの内面が、金属管の接続端部付近の外周面、また
は該金属管の端部が接合されたニップル部材の接続端部
付近の外周面の少なくとも一部に形成したリング状また
は螺旋状のほぼ三角形状の凹凸部の底部まで密着して多
数の凹凸が噛み合う状態となり、金属管、あるいはニッ
プル部材の外周面と耐圧ゴムホースの内周面との間の境
界面に形成される凹凸部の長さを実質的に長くするラビ
リンスシール効果が発揮できるからである。本発明者が
検討した結果、凹凸部の高さ（ｈ）は０．０２ｍｍを境
にして凹凸部の高さ（ｈ）が０．０２ｍｍ未満となると
十分な耐引抜き力や耐圧性が確保できないことが分かっ
た。さらにゴムホースの内面が凹凸部の底部に到達させ
るためのカシメ力が著しく上昇するため耐圧ゴムホース
にクリープを発生させ製品寿命を短くしてしまうことも
判明した。一方前記凹凸部の高さ（ｈ）が０．２ｍｍを
超えると、前記した耐圧ゴムホース特有の特性により弾
性変形し易い部分が該ゴムホースの肉厚の約１／４程度
であるために、該凹凸部の底部までゴムホースを変形し
てその内面を到達させるために必要なカシメ力が著しく
上昇し、これにより耐圧ゴムホースにクリープを発生さ
せ製品寿命を短くしてしまうことも判明した。そこで凹
凸部の高さ（ｈ）とピッチ（ｐ）の関係をさらに検討す
ると、該ピッチ（ｐ）がｈ未満となると、前記したよう
に通常のカシメ力ではゴムホースの内面が凹凸部の底部
にまで至らず、該底部まで至らすためには著しく大きな
カシメ力が必要となって耐圧ゴムホースにクリープを発
生させ製品寿命を短くしてしまい、一方２ｈを超えると
前記した境界面に形成される凹凸部の長さを実質的に長
くするラビリンスシール効果が発揮し難く、耐引抜き力
や耐圧性が低下してしまう。したがって本発明では、凹
凸部の高さ（ｈ）を０．０２〜０．２ｍｍとし、かつピ
ッチ（ｐ）をｈ≦ｐ≦２ｈとしたのである。Now, based on the characteristics of such a pressure-resistant rubber hose, the reasons for limiting the numerical values are as follows. The pull-out resistance and the pressure resistance are improved by increasing the height (h) of the uneven portion and shortening the pitch (p). This is because the inner surface of the pressure-resistant rubber hose is formed in at least a part of the outer peripheral surface near the connection end of the metal tube, or at least a part of the outer peripheral surface near the connection end of the nipple member to which the end of the metal tube is joined. A large number of irregularities are brought into a state in which they are brought into close contact with the bottom of the spiral substantially triangular irregularities, and irregularities are formed at the boundary between the outer peripheral surface of the metal tube or nipple member and the inner peripheral surface of the pressure-resistant rubber hose. This is because a labyrinth sealing effect of substantially increasing the length of the portion can be exhibited. As a result of the study by the present inventor, if the height (h) of the uneven portion is less than 0.02 mm with the height (h) of the uneven portion being less than 0.02 mm, sufficient pulling resistance and pressure resistance cannot be secured. I understood that. Further, it was also found that the crimping force for the inner surface of the rubber hose to reach the bottom of the uneven portion was significantly increased, so that creep occurred in the pressure-resistant rubber hose and the product life was shortened. On the other hand, when the height (h) of the uneven portion exceeds 0.2 mm, the portion easily elastically deformed due to the above-mentioned characteristic of the pressure-resistant rubber hose is about ４ of the thickness of the rubber hose. It was also found that the crimping force required to deform the rubber hose to the bottom of the part and reach the inner surface thereof increased significantly, thereby causing creep in the pressure-resistant rubber hose and shortening the product life. Therefore, the relationship between the height (h) of the uneven portion and the pitch (p) is further examined. When the pitch (p) is less than h, the inner surface of the rubber hose is at the bottom of the uneven portion with the normal caulking force as described above. In order to reach the bottom, extremely large caulking force is required, creep occurs in the pressure-resistant rubber hose, and the product life is shortened. The labyrinth sealing effect of substantially increasing the length of the portion is difficult to exert, and the pull-out resistance and the pressure resistance are reduced. Therefore, in the present invention, the height (h) of the uneven portion is set to 0.02 to 0.2 mm, and the pitch (p) is set to h ≦ p ≦ 2h.
【００１１】また本発明では、内管が嵌合状または圧嵌
状に挿着された金属管の連結部では軸方向に間隔をおい
て大きなピッチで膨出壁、凹凸壁もしくは鋸歯壁が形成
され、該膨出壁、凹凸壁もしくは鋸歯壁を形成し、さら
に前記凹凸部を形成することが好ましい。さらにニップ
ル部材の連結部では、軸方向に間隔をおいて大きいピッ
チで断面ほぼ鋸歯状あるいは螺旋状の凹凸係合周面を形
成し、かつ該断面ほぼ鋸歯状あるいは螺旋状の凹凸係合
周面にさらに前記凹凸部を形成することが好ましい。そ
の理由は前述した通り高圧流体用の耐圧ゴムホースは、
内部埋設されたブレードにより弾性変形がし難いため、
大きなピッチの膨出壁、凹凸壁もしくは鋸歯壁、または
大きなピッチの断面ほぼ鋸歯状あるいは螺旋状の凹凸係
合周面を形成すれば、耐圧ゴムホースの変形が緩やかに
なり、内部に埋設されたブレードによる変形の制約を受
け難いからである。なお膨出壁、凹凸壁もしくは鋸歯
壁、または大きなピッチの断面ほぼ鋸歯状あるいは螺旋
状の凹凸係合周面の高さをＨとした場合、前記ピッチＰ
は５Ｈ以上で、３０Ｈ未満とすることが好ましく、また
高さＨは０．２ｍｍ以上とすることが好ましい。Further, according to the present invention, a bulged wall, an uneven wall or a sawtooth wall is formed at a large pitch at a large pitch in the axial direction at a connecting portion of the metal tube in which the inner tube is inserted in a fitting shape or a press fitting shape. Preferably, the bulging wall, the uneven wall or the sawtooth wall is formed, and the uneven portion is further formed. Further, in the connecting portion of the nipple member, a substantially sawtooth-shaped or spiral-shaped uneven engagement peripheral surface is formed at a large pitch in the axial direction, and the substantially serrated or spiral-shaped uneven engagement peripheral surface is formed. Preferably, the uneven portion is further formed. The reason is, as mentioned above, the pressure-resistant rubber hose for high pressure fluid is
Because elastic deformation is difficult due to the blade embedded inside,
If a large-pitch bulging wall, uneven wall or saw-tooth wall, or a large-pitch cross-section substantially saw-tooth or spiral uneven engaging peripheral surface is formed, the deformation of the pressure-resistant rubber hose becomes gentle, and the blade embedded inside This is because it is hard to be restricted by the deformation due to. When the height of the bulging wall, the uneven wall or the sawtooth wall, or the section of the large pitch having a substantially sawtooth or spiral uneven engagement surface is H, the pitch P
Is preferably 5H or more and less than 30H, and the height H is preferably 0.2 mm or more.
【００１２】[0012]
【発明の実施の形態】以下本発明を添付図面について詳
述する。図１は本発明に係る高圧流体用の細径金属管と
耐圧ゴムホースとの接続構造の一実施例の一部破断した
断面図、図２は他の実施例の一部破断した断面図、図３
はさらに他の実施例の一部破断した断面図、図４は連結
部の凹凸部の高さとピッチとの関係を説明する図、図５
は凹凸部のさらに他の実施例を示す図で、（ａ）〜
（ｄ）はそれぞれ各実施例を示す部分拡大断面図であっ
て、Ｐは細径の金属管、１は連結部、２は耐圧ゴムホー
ス、３はソケット部材、４はニップル部材、５は内管、
６はリング状または螺旋状のほぼ三角形状の凹凸部であ
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a partially cutaway sectional view of one embodiment of a connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose according to the present invention. FIG. 2 is a partially cutaway sectional view of another embodiment. 3
FIG. 4 is a partially cutaway cross-sectional view of still another embodiment. FIG.
(A) to (d) are views showing still another embodiment of the uneven portion.
(D) is a partially enlarged sectional view showing each embodiment, where P is a small-diameter metal tube, 1 is a connecting portion, 2 is a pressure-resistant rubber hose, 3 is a socket member, 4 is a nipple member, and 5 is an inner tube. ,
Reference numeral 6 denotes a ring-shaped or spiral-shaped substantially triangular uneven portion.
【００１３】図１において肉厚が例えば０．７〜１．２
ｍｍ程度の薄肉で細径の金属管Ｐの端部にニップル部材
４がろう付けあるいは溶接などの手段で接合Ｗされ、該
ニップル部材４の他方の接続端部付近の外周面の少なく
とも一部、好ましくは全外周面に亘って、高さ（ｈ）が
０．０２〜０．２ｍｍで、かつピッチ（ｐ）がｈ≦ｐ≦
２ｈのリング状または螺旋状のほぼ三角形状の凹凸部６
を有する連結部１が形成されている。また該連結部１の
外周側を囲繞するように有底筒状のソケット部材３が該
ソケット部材の底壁部３−１をニップル部材４に設けら
れた段部４−１に掛止して設けられる。そしてソケット
部材３の内周面とニップル部材４の連結部１の外周面と
の間に、内部のほぼ中央部に樹脂繊維あるいは金属線な
どのブレード（図示せず）が埋設された耐圧ゴムホース
２を挿入し、かかる状態でソケット部材３の外周壁部を
円周方向の外方より内方に向かってカシメて固定７する
ことにより前記金属管Ｐと耐圧ゴムホース２とを接続構
成するものである。なお２−１は外部を保護するために
耐圧ゴムホース２の外側を被覆し、かつ金属細線によっ
て編組されたブレードである。そして前記凹凸部６は、
実質的に三角形状であれば、特に形状については制限さ
れず、正三角形、二等辺三角形、直角三角形、頂部に僅
かな窪みを有する三角形など適宜の形状を選択でき、ま
た前記凹凸部６は切削、転造など適宜の方法で成形する
ことができる。In FIG. 1, the thickness is, for example, 0.7 to 1.2.
The nipple member 4 is joined W to the end of the thin metal pipe P having a small diameter of about mm by brazing or welding, and at least a part of the outer peripheral surface near the other connection end of the nipple member 4, Preferably, the height (h) is 0.02 to 0.2 mm and the pitch (p) is h ≦ p ≦ over the entire outer peripheral surface.
2h ring or spiral substantially triangular irregularities 6
Is formed. Further, a bottomed cylindrical socket member 3 locks a bottom wall portion 3-1 of the socket member to a step 4-1 provided on the nipple member 4 so as to surround the outer peripheral side of the connecting portion 1. Provided. A pressure-resistant rubber hose 2 having a blade (not shown) such as a resin fiber or a metal wire embedded in a substantially central portion between the inner peripheral surface of the socket member 3 and the outer peripheral surface of the connecting portion 1 of the nipple member 4. The metal tube P and the pressure-resistant rubber hose 2 are connected to each other by inserting and fixing the outer peripheral wall of the socket member 3 from the outside in the circumferential direction to the inside in this state. . A blade 2-1 covers the outside of the pressure-resistant rubber hose 2 to protect the outside and is braided with a thin metal wire. And the uneven portion 6
The shape is not particularly limited as long as it is substantially triangular, and an appropriate shape such as an equilateral triangle, an isosceles triangle, a right triangle, or a triangle having a slight depression at the top can be selected. It can be formed by an appropriate method such as rolling and the like.
【００１４】上記構成を有する図１の高圧流体用の細径
金属管Ｐと耐圧ゴムホース２との接続構造によれば内部
流体が高圧で、かつ内部にブレードが埋設された耐圧ゴ
ムホース２を用いても前記連結部１に設けた前記の特殊
形状と寸法を有する凹凸部６によってニップル部材４の
外周面と耐圧ゴムホース２との間の境界面の長さを実質
的に長くしてラビリンスシール効果を発揮せしめ、かつ
ソケット部材３へのカシメによる固定７により連結部１
の凹凸部６の凸部の頂部と耐圧ゴムホース２の内周面と
の面圧を特に高めてシール性を著しく向上させ、また耐
引抜き性を高めることができる。According to the connection structure between the small-diameter metal pipe P for high-pressure fluid and the pressure-resistant rubber hose 2 shown in FIG. 1 having the above structure, the pressure of the internal fluid is high and the pressure-resistant rubber hose 2 having a blade embedded therein is used. Also, the length of the boundary surface between the outer peripheral surface of the nipple member 4 and the pressure-resistant rubber hose 2 is substantially increased by the uneven portion 6 having the special shape and dimensions provided on the connecting portion 1 to improve the labyrinth sealing effect. The connecting portion 1 is brought out and fixed by caulking 7 to the socket member 3.
In particular, the surface pressure between the top of the convex portion of the concave-convex portion 6 and the inner peripheral surface of the pressure-resistant rubber hose 2 can be increased to significantly improve the sealing property and the pull-out resistance.
【００１５】つぎに図２は前記図１の実施例に示された
ニップル部材４を用いることなく、金属管Ｐの接続端部
付近に嵌合状または圧嵌状に内管５を挿着してカシメに
よる固定７の際の支持手段とするとともに、ニップル部
材４を用いないことにより製品全体の重量を軽減したも
のである。すなわち図２では、薄肉で細径の金属管Ｐの
接続端部付近に嵌合状または圧嵌状に内管５を挿着して
二重壁部を形成し、該金属管Ｐの接続端部付近の外周面
の少なくとも一部、好ましくは全外周面に亘って、高さ
（ｈ）が０．０２〜０．２ｍｍで、ピッチ（ｐ）がｈ≦
ｐ≦２ｈのリング状または螺旋状のほぼ三角形状の凹凸
部６を有する連結部１が形成されている。また該連結部
１の外周側を囲繞するように有底筒状のソケット部材３
が該ソケット部材の底壁部３−１を金属管Ｐに設けられ
た環状凹溝８に掛止して設けられる。そしてソケット部
材３の内周面と金属管Ｐの連結部１の外周面との間に、
内部のほぼ中央部にブレードが埋設された耐圧ゴムホー
ス２を挿入し、かかる状態でソケット部材３の外周壁部
を円周方向の外方より内方に向かってカシメて固定７す
ることにより前記金属管Ｐと耐圧ゴムホース２とを接続
構成するものである。Next, FIG. 2 shows a state in which the inner tube 5 is inserted in a fitting or press-fitting shape near the connection end of the metal tube P without using the nipple member 4 shown in the embodiment of FIG. In addition to using the nipple member 4 as a support means at the time of fixing by caulking 7, the weight of the entire product is reduced. That is, in FIG. 2, the inner pipe 5 is inserted into the vicinity of the connection end of the thin and small-diameter metal pipe P in a fitting or press-fitting manner to form a double wall, and the connection end of the metal pipe P is formed. The height (h) is 0.02 to 0.2 mm and the pitch (p) is h ≦ at least a part of the outer peripheral surface near the portion, preferably, the entire outer peripheral surface.
A connecting portion 1 having a ring-shaped or spiral-shaped substantially triangular uneven portion 6 where p ≦ 2h is formed. A cylindrical socket member 3 having a bottom so as to surround the outer peripheral side of the connecting portion 1.
Are provided so that the bottom wall portion 3-1 of the socket member is engaged with the annular groove 8 provided in the metal tube P. Then, between the inner peripheral surface of the socket member 3 and the outer peripheral surface of the connecting portion 1 of the metal pipe P,
A pressure-resistant rubber hose 2 having a blade embedded therein is inserted into a substantially central portion of the inside, and in this state, the outer peripheral wall portion of the socket member 3 is caulked inward from the outside in the circumferential direction and fixed 7 to fix the metal. The pipe P and the pressure-resistant rubber hose 2 are connected to each other.
【００１６】上記構成を有する図２の高圧流体用の細径
金属管Ｐと耐圧ゴムホース２との接続構造によれば内部
流体が高圧で、かつ内部にブレードが埋設された耐圧ゴ
ムホース２を用いても前記連結部１に設けた前記の特殊
形状と寸法を有する凹凸部６によって金属管Ｐの連結部
１の外周面と耐圧ゴムホース２との間の境界面の長さを
実質的に長くしてラビリンスシール効果を発揮せしめ、
かつカシメによる固定７により連結部１の凹凸部６の凸
部の頂部と耐圧ゴムホース２の内周面との面圧を特に高
めてシール性を著しく向上させ、また耐引抜き性を高め
ることができる。According to the connection structure between the small-diameter metal pipe P for high-pressure fluid and the pressure-resistant rubber hose 2 shown in FIG. 2 having the above structure, the pressure of the internal fluid is high and the pressure-resistant rubber hose 2 having a blade embedded therein is used. Also, the length of the boundary surface between the outer peripheral surface of the connecting portion 1 of the metal pipe P and the pressure-resistant rubber hose 2 is substantially increased by the uneven portion 6 having the special shape and dimensions provided on the connecting portion 1. Demonstrate the labyrinth seal effect,
In addition, due to the fixation 7 by caulking, the surface pressure between the top of the convex portion of the concave-convex portion 6 of the connecting portion 1 and the inner peripheral surface of the pressure-resistant rubber hose 2 is particularly increased, so that the sealing property can be remarkably improved and the pull-out resistance can be enhanced. .
【００１７】つぎに図３は、ソケット部材３の底壁部３
−１の金属管Ｐへの掛止をダブルスプール９−１、９−
２によりなしたものである。すなわち図３では薄肉で細
径の金属管Ｐの接続端部付近に嵌合状または圧嵌状に内
管５を挿着して二重壁部を形成し、該金属管Ｐの接続端
部付近の外周面の少なくとも一部、好ましくは全外周面
に亘って、高さ（ｈ）が０．０２〜０．２ｍｍで、かつ
ピッチ（ｐ）がｈ≦ｐ≦２ｈのリング状または螺旋状の
ほぼ三角形状の凹凸部６を有する連結部１が形成されて
いる。また該連結部１の外周側を囲繞するように有底筒
状のソケット部材３が該ソケット部材の底壁部３−１を
金属管Ｐに設けられたダブルスプール９−１、９−２に
掛止して設けられる。すなわち図３では金属管Ｐに挿着
された内管５の端部付近に予め第１のスプール９−１を
成形しておき該スプール９−１に底壁部３−１の内側部
を当接した後、該底壁部３−１の外面側に当接せしめる
第２のスプール９−２を成形することによって金属管Ｐ
にソケット部材３を掛止するよう構成したものである。
そしてソケット部材３の内周面と金属管Ｐの連結部１の
外周面との間に、内部のほぼ中央部にブレードが埋設さ
れた耐圧ゴムホース２を挿入し、かかる状態でソケット
部材３の外周壁部を円周方向の外方より内方に向かって
カシメて固定７することにより前記金属管Ｐと耐圧ゴム
ホース２とを接続構成するものである。Next, FIG. 3 shows the bottom wall 3 of the socket member 3.
-1 is hooked to the metal tube P by double spools 9-1 and 9-
2 That is, in FIG. 3, the inner pipe 5 is inserted into the vicinity of the connection end of the thin and small-diameter metal pipe P in a fitting or press-fitting manner to form a double wall, and the connection end of the metal pipe P is formed. A ring shape or a spiral shape having a height (h) of 0.02 to 0.2 mm and a pitch (p) of h ≦ p ≦ 2h over at least a part of, preferably the entire outer peripheral surface in the vicinity. The connecting portion 1 having the substantially triangular uneven portion 6 is formed. In addition, a bottomed cylindrical socket member 3 surrounds the outer peripheral side of the connecting portion 1 and the bottom wall portion 3-1 of the socket member is attached to the double spools 9-1 and 9-2 provided in the metal tube P. It is provided hanging. That is, in FIG. 3, the first spool 9-1 is formed near the end of the inner tube 5 inserted in the metal tube P in advance, and the inner portion of the bottom wall 3-1 is applied to the spool 9-1. After contact, the metal pipe P is formed by forming a second spool 9-2 which is brought into contact with the outer surface of the bottom wall 3-1.
The socket member 3 is configured to be hooked on the socket.
Then, between the inner peripheral surface of the socket member 3 and the outer peripheral surface of the connecting portion 1 of the metal tube P, a pressure-resistant rubber hose 2 having a blade buried in a substantially central portion thereof is inserted. The metal tube P and the pressure-resistant rubber hose 2 are connected to each other by caulking and fixing 7 the wall portion from the outer side to the inner side in the circumferential direction.
【００１８】上記構成を有する図３の高圧流体用の細径
金属管Ｐと耐圧ゴムホース２との接続構造によれば内部
流体が高圧で、内部にブレードが埋設された耐圧ゴムホ
ース２を用いても前記連結部１に設けた前記の特殊形状
と寸法を有する凹凸部６によってニップル部材４の外周
面と耐圧ゴムホース２との間の境界面の長さを実質的に
長くしてラビリンスシール効果を発揮せしめ、かつカシ
メによる固定７により連結部１の凹凸部６の凸部の頂部
と耐圧ゴムホース２の内周面との面圧を特に高めてシー
ル性を著しく向上させ、また耐引抜き性を高めることが
できる。According to the connection structure between the small-diameter metal pipe P for high-pressure fluid and the pressure-resistant rubber hose 2 having the above structure shown in FIG. 3, even when the pressure-resistant rubber hose 2 in which the internal fluid is at a high pressure and the blade is embedded therein is used. By the uneven portion 6 having the special shape and dimensions provided on the connecting portion 1, the length of the boundary surface between the outer peripheral surface of the nipple member 4 and the pressure-resistant rubber hose 2 is substantially lengthened to exhibit a labyrinth sealing effect. In particular, the surface pressure between the top of the convex portion of the concave-convex portion 6 of the connecting portion 1 and the inner peripheral surface of the pressure-resistant rubber hose 2 is increased by the fixing 7 by caulking, thereby significantly improving the sealing performance and the pull-out resistance. Can be.
【００１９】なお上記した各実施例おいては前記ニップ
ル部材４の接続端部付近または嵌合状または圧嵌状に内
管５が挿着された金属管Ｐの接続端部付近の外周面の少
なくとも一部、好ましくは全外周面に亘って、図４に模
式的に示すような高さ（ｈ）が０．０２〜０．２ｍｍ
で、かつピッチ（ｐ）がｈ≦ｐ≦２ｈのリング状または
螺旋状のほぼ三角形状の凹凸部６を有する連結部１が形
成されている。In each of the above-described embodiments, the outer peripheral surface near the connection end of the nipple member 4 or near the connection end of the metal pipe P into which the inner pipe 5 is inserted in a fitting or press-fitting manner. A height (h) as schematically shown in FIG. 4 is at least 0.02 to 0.2 mm over at least a part, preferably the entire outer peripheral surface.
The coupling portion 1 having a ring-shaped or spiral-shaped substantially triangular uneven portion 6 having a pitch (p) of h ≦ p ≦ 2h is formed.
【００２０】また内管５を挿着して金属管Ｐと二重壁部
を形成する際に、図５（ａ）のように内管５は平滑管と
し、金属管Ｐの接続端部付近のみに凹凸部６を形成する
のみならず、図５（ｂ）のように金属管Ｐと内管５とを
一体として凹凸部６を形成することもできる。Further, when the inner tube 5 is inserted to form a double wall with the metal tube P, the inner tube 5 is made a smooth tube as shown in FIG. In addition to forming the concave and convex portions 6 only, the concave and convex portions 6 can be formed by integrating the metal tube P and the inner tube 5 as shown in FIG.
【００２１】さらに図５（ｃ）のように金属管Ｐと内管
５とを一体にして凹凸部６を形成するとともに、内管５
側に軸方向に間隔をおいて大きなピッチで膨出壁、凹凸
壁もしくは鋸歯壁を形成することにより耐圧ゴムホース
２を前記膨出壁、凹凸壁もしくは鋸歯壁に密着せしめて
耐圧性と耐引抜き性を向上し、かつ内管５を補強してリ
ブ効果により支持力を高めることができ、さらに図５
（ｄ）のようにニップル部材４の連結部１に軸方向に間
隔をおいて大きなピッチで断面ほぼ鋸歯状あるいは螺旋
状の凹凸係合周面１０を形成し、該係合周面の外面に前
記した形状と寸法の凹凸部６を形成することもできる。
この場合も耐圧ゴムホース２を前記凹凸係合周面１０に
密着せしめて耐圧性と耐引抜き性を向上することができ
る。なお上記の説明は高圧流体用の接続構造について行
ったが、本発明は低圧流体用に用いることができること
はいうまでもない。Further, as shown in FIG. 5C, the metal tube P and the inner tube 5 are integrally formed to form the uneven portion 6, and the inner tube 5 is formed.
The pressure-resistant rubber hose 2 is closely attached to the bulged wall, the uneven wall or the sawtooth wall by forming the bulged wall, the uneven wall or the sawtooth wall at a large pitch at an axial interval on the side, so that the pressure-resistant and pull-out resistance is improved. In addition, it is possible to enhance the supporting force by the rib effect by reinforcing the inner pipe 5,
As shown in (d), a concave-convex engaging peripheral surface 10 having a substantially saw-tooth or spiral cross section is formed at a large pitch in the connecting portion 1 of the nipple member 4 at a large pitch in the axial direction, and the outer peripheral surface of the engaging peripheral surface is formed. The uneven portion 6 having the above-described shape and dimensions can also be formed.
Also in this case, the pressure-resistant rubber hose 2 is brought into close contact with the concave-convex engagement peripheral surface 10 so that the pressure resistance and the pull-out resistance can be improved. Although the above description has been made with reference to the connection structure for a high-pressure fluid, it goes without saying that the present invention can be used for a low-pressure fluid.
【００２２】[0022]
【発明の効果】以上述べた通り本発明によれば、金属管
あるいはニップル部材の接続端部付近の外周面の少なく
とも一部に特殊形状と寸法を有する凹凸部を形成するこ
とによって前記接続端部の外周面と耐圧ゴムホースの内
周面との間の境界面の長さを実質的に長くしてラビリン
スシール効果をも発揮せしめ、高圧流体に対して用いて
も優れた耐圧性、耐疲労性や耐引抜き性を発揮すること
ができる高圧流体用の細径金属管と耐圧ゴムホースとの
接続構造を提供することができる。As described above, according to the present invention, the connection end portion is formed by forming an uneven portion having a special shape and size on at least a part of the outer peripheral surface near the connection end portion of the metal pipe or nipple member. The length of the boundary between the outer peripheral surface of the rubber hose and the inner peripheral surface of the pressure-resistant rubber hose is substantially lengthened to exhibit a labyrinth sealing effect. Excellent pressure resistance and fatigue resistance even when used for high-pressure fluid It is possible to provide a connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose capable of exhibiting resistance to pulling out.
【図１】本発明に係る高圧流体用の細径金属管と耐圧ゴ
ムホースとの接続構造の一実施例の一部破断した断面図
である。FIG. 1 is a partially broken cross-sectional view of an embodiment of a connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose according to the present invention.
【図２】本発明の他の実施例の一部破断した断面図であ
る。FIG. 2 is a partially broken sectional view of another embodiment of the present invention.
【図３】本発明のさらに他の実施例の一部破断した断面
図である。FIG. 3 is a partially cutaway sectional view of still another embodiment of the present invention.
【図４】本発明おける連結部の凹凸部の高さとピッチと
の関係を説明する模式図である。FIG. 4 is a schematic diagram illustrating a relationship between a height and a pitch of a concavo-convex portion of a connecting portion in the present invention.
【図５】本発明の凹凸部のさらに他の実施例を示す図
で、（ａ）〜（ｄ）はそれぞれ各実施例を示す部分拡大
断面図である。FIG. 5 is a view showing still another embodiment of the uneven portion of the present invention, and (a) to (d) are partially enlarged sectional views showing each embodiment.
【図６】従来の高圧流体用の細径金属管と耐圧ゴムホー
スとの接続構造の一例の一部破断した断面図である。FIG. 6 is a partially broken cross-sectional view of an example of a conventional connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose.
【図７】従来の高圧流体用の細径金属管と耐圧ゴムホー
スとの接続構造の他の例の一部破断した断面図である。FIG. 7 is a partially broken sectional view of another example of a conventional connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose.
【図８】従来の高圧流体用の細径金属管と耐圧ゴムホー
スとの接続構造のさらに他の例の一部破断した断面図で
ある。FIG. 8 is a partially broken sectional view of still another example of a conventional connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose.
Ｐ 金属管 Ｗ 接合 １ 連結部 ２ 耐圧ゴムホース ２−１ ブレード ３ ソケット部材 ３−１ 底壁部 ４ ニップル部材 ４−１ 段部 ５ 内管 ６ 凹凸部 ７ カシメによる固定 ８ 環状凹溝 ９−１、９−２ ダブルスプール １０ 凹凸係合周面 P Metal tube W Joining 1 Connecting part 2 Pressure-resistant rubber hose 2-1 Blade 3 Socket member 3-1 Bottom wall part 4 Nipple member 4-1 Step part 5 Inner tube 6 Uneven part 7 Fixing by crimping 8 Annular concave groove 9-1, 9-2 Double spool 10 Uneven surface
【手続補正書】[Procedure amendment]
【提出日】平成１１年７月６日（１９９９．７．６）[Submission date] July 6, 1999 (1999.7.6)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】全図[Correction target item name] All figures
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】 FIG.
【図２】 FIG. 2
【図３】 FIG. 3
【図４】 FIG. 4
【図５】 FIG. 5
【図６】 FIG. 6
【図７】 FIG. 7
【図８】 FIG. 8
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ１６Ｌ 33/20 Ｆ１６Ｌ 33/20 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) F16L 33/20 F16L 33/20
Claims (5)
金属管の接続端部付近または該金属管の端部が接合され
たニップル部材の接続端部付近の外周面の少なくとも一
部に、高さ（ｈ）が０．０２〜０．２ｍｍ、かつピッチ
（ｐ）がｈ以上で２ｈ以下のリング状または螺旋状のほ
ぼ三角形状の凹凸部を有する連結部を形成し、該連結部
に耐圧ゴムホースを被着した状態で底壁部を前記金属管
またはニップル部材側に掛止した有底筒状のソケット部
材により相互の連設部分をカシメ固定して構成したこと
を特徴とする高圧流体用の細径金属管と耐圧ゴムホース
との接続構造。At least one of an outer peripheral surface near a connection end of a metal tube into which an inner tube is fitted or press-fitted or near a connection end of a nipple member to which the end of the metal tube is joined. A connecting portion having a ring-shaped or spiral-shaped substantially triangular uneven portion having a height (h) of 0.02 to 0.2 mm and a pitch (p) of h or more and 2 h or less, In the state where a pressure-resistant rubber hose is attached to the connecting portion, the bottom wall portion is formed by caulking and fixing mutually connected portions by a bottomed cylindrical socket member hooked to the metal tube or the nipple member side. Connection structure between a small-diameter metal tube for high-pressure fluid and a pressure-resistant rubber hose.
内管に該接続端部付近とともに凹凸部が形成されている
ことを特徴とする請求項１記載の高圧流体用の細径金属
管と耐圧ゴムホースとの接続構造。2. The small diameter for a high-pressure fluid according to claim 1, wherein the inner pipe inserted near the connection end of the metal pipe has an uneven portion along with the connection end. Connection structure between metal tube and pressure-resistant rubber hose.
前記金属管に成形された環状凹溝またはダブルスプール
により掛止されていることを特徴とする請求項１または
２記載の高圧流体用の細径金属管と耐圧ゴムホースとの
接続構造。3. The high pressure according to claim 1, wherein the bottom wall of the bottomed cylindrical socket member is hooked by an annular groove or a double spool formed in the metal tube. Connection structure between a small-diameter metal tube for fluid and a pressure-resistant rubber hose.
れた金属管の連結部には、軸方向に間隔をおいて大きな
ピッチで膨出壁、凹凸壁もしくは鋸歯壁が形成され、該
膨出壁、凹凸壁もしくは鋸歯壁にさらに前記凹凸部が形
成されていることを特徴とする請求項１〜３のいずれか
１項記載の高圧流体用の細径金属管と耐圧ゴムホースと
の接続構造。4. A bulged wall, an uneven wall or a sawtooth wall is formed at a large pitch at a distance in the axial direction at a connecting portion of the metal tube into which the inner tube is inserted in a fitting shape or a press fitting shape. The small-diameter metal tube for high-pressure fluid and a pressure-resistant rubber hose according to any one of claims 1 to 3, wherein the uneven portion is further formed on the bulging wall, the uneven wall, or the sawtooth wall. And connection structure.
に間隔をおいて大きいピッチで断面ほぼ鋸歯状あるいは
螺旋状の凹凸係合周面が形成され、かつ該断面ほぼ鋸歯
状あるいは螺旋状の凹凸係合周面にさらに前記凹凸部が
形成されていることを特徴とする請求項１〜３のいずれ
か１項記載の高圧流体用の細径金属管と耐圧ゴムホース
との接続構造。5. The connecting portion of the nipple member is formed with a substantially sawtooth-shaped or spiral-shaped concave / convex engaging peripheral surface at a large pitch at a distance in the axial direction, and has a substantially sawtooth-shaped or spiral-shaped cross-section. The connection structure between a small-diameter metal pipe for high-pressure fluid and a pressure-resistant rubber hose according to any one of claims 1 to 3, wherein the uneven portion is further formed on the peripheral surface of the uneven engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17901299A JP4266060B2 (en) | 1999-06-24 | 1999-06-24 | Connection structure of small diameter metal tube for high pressure fluid and pressure resistant rubber hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17901299A JP4266060B2 (en) | 1999-06-24 | 1999-06-24 | Connection structure of small diameter metal tube for high pressure fluid and pressure resistant rubber hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001012663A true JP2001012663A (en) | 2001-01-16 |
| JP4266060B2 JP4266060B2 (en) | 2009-05-20 |
Family
ID=16058584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17901299A Expired - Fee Related JP4266060B2 (en) | 1999-06-24 | 1999-06-24 | Connection structure of small diameter metal tube for high pressure fluid and pressure resistant rubber hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4266060B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003214588A (en) * | 2002-01-18 | 2003-07-30 | Denso Corp | Piping structure |
| KR100471991B1 (en) * | 2002-06-01 | 2005-03-08 | 기아자동차주식회사 | Structure for guiding a oil of an automobile |
| JP2010151289A (en) * | 2008-12-26 | 2010-07-08 | Nok Corp | Sealing structure of drain pipe joint |
| JP2014181733A (en) * | 2013-03-18 | 2014-09-29 | Nisshin Steel Co Ltd | Joint structure and joint method for metallic pipe |
| JP2015052376A (en) * | 2013-09-09 | 2015-03-19 | ブリヂストンフローテック株式会社 | Metal fitting, hose with metal fitting and method for assembling hose with metal fitting |
-
1999
- 1999-06-24 JP JP17901299A patent/JP4266060B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003214588A (en) * | 2002-01-18 | 2003-07-30 | Denso Corp | Piping structure |
| KR100471991B1 (en) * | 2002-06-01 | 2005-03-08 | 기아자동차주식회사 | Structure for guiding a oil of an automobile |
| JP2010151289A (en) * | 2008-12-26 | 2010-07-08 | Nok Corp | Sealing structure of drain pipe joint |
| JP2014181733A (en) * | 2013-03-18 | 2014-09-29 | Nisshin Steel Co Ltd | Joint structure and joint method for metallic pipe |
| JP2015052376A (en) * | 2013-09-09 | 2015-03-19 | ブリヂストンフローテック株式会社 | Metal fitting, hose with metal fitting and method for assembling hose with metal fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4266060B2 (en) | 2009-05-20 |
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