JP2001050456A - Connector for connecting small diameter tube - Google Patents
Connector for connecting small diameter tubeInfo
- Publication number
- JP2001050456A JP2001050456A JP11218907A JP21890799A JP2001050456A JP 2001050456 A JP2001050456 A JP 2001050456A JP 11218907 A JP11218907 A JP 11218907A JP 21890799 A JP21890799 A JP 21890799A JP 2001050456 A JP2001050456 A JP 2001050456A
- Authority
- JP
- Japan
- Prior art keywords
- connector
- elastic
- wall
- diameter
- 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.)
- Pending
Links
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
【０００１】[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、装置などに給油、給気の供給路として
配設される管径、太さ４０ｍｍ程度以下の比較的細径か
らなる金属管あるいは樹脂チューブ（以下単に配管とい
う）の接続用コネクターに関し、さらに詳細には配管と
の接続の前後を問わず常時防塵効果を有するキャップ部
材を装着した細径配管接続用コネクターに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a metal pipe having a relatively small diameter of about 40 mm or less, which is generally provided as a supply path for oil supply and air supply to an automobile or various machines and devices. Alternatively, the present invention relates to a connector for connecting a resin tube (hereinafter simply referred to as a pipe), and more particularly to a connector for connecting a small-diameter pipe provided with a cap member having a dustproof effect at all times before and after connection to the pipe.
【０００２】[0002]
【従来の技術】従来、細径配管接続用のクイック・コネ
クターとしては各種のものが提案され実用に供されてい
る。その一例としては本出願人が提案した特開平９−２
８０４５１号（特願平８−１２１０６３号）公報に示さ
れるように、軸芯内部に、先端側の連結筒壁の流通孔に
連って拡径した小径室と大径室とを貫設してなるコネク
ター本体の該小径室部に、シールリング部材とブッシュ
部材とを内装せしめ、かつ前記大径室の周壁のなす対向
部位に設けた切欠き窓部分に、それぞれ前方に突設して
その中間付近を内方に傾斜した屈曲部による爪壁となし
て内方に付勢された弾発壁と、該弾発壁の外端部より前
記コネクター本体の周壁の外側に延長する突壁とを有す
るソケット部材を前記コネクター本体と一体に設け、接
続される配管側の環状膨出壁部に前記弾発壁を係圧せし
めて接続するよう構成されたものがある。なお前記公開
公報では、前記小径室の周壁の外側に凸起部を設けて、
左右回動自在となす筒環状の解放部材を該凸起部に係着
して、該解放部材の後端側の表面にカム壁を有して前記
突壁あるいはコネクター本体の外周面との相互の対向面
にあって配管の接続時およびその解放時に、該解放部材
の回動に伴ってその回動位置を一定にセットする一対の
係止手段を設けて前記突壁を拡閉し、爪壁での係圧、解
除を行うように構成して前記配管を接続状態から容易に
解放状態にできるよう構成してある。2. Description of the Related Art Conventionally, various types of quick connectors for connecting small-diameter pipes have been proposed and put to practical use. One example is Japanese Patent Application Laid-Open No. Hei 9-2 proposed by the present applicant.
As shown in Japanese Patent Application No. 80451 (Japanese Patent Application No. 8-121063), a small-diameter chamber and a large-diameter chamber whose diameters are increased through the flow hole of the connecting cylinder wall on the distal end side are penetrated inside the shaft core. A seal ring member and a bush member are provided inside the small-diameter chamber portion of the connector main body, and a notch window portion provided in a facing portion formed by a peripheral wall of the large-diameter chamber is provided so as to protrude forward. A resilient wall urged inward by forming a claw wall formed by a bent portion inclined inward at an intermediate portion, and a protruding wall extending outward from the outer end of the resilient wall to the outer peripheral wall of the connector body. There is a structure in which a socket member having the following structure is provided integrally with the connector main body, and the resilient wall is pressed against the annular bulging wall portion on the pipe side to be connected. In the publication, a protrusion is provided outside the peripheral wall of the small-diameter chamber,
A cylindrical annular release member rotatable left and right is engaged with the protruding portion, and a cam wall is provided on a surface on a rear end side of the release member to allow mutual contact with the protruding wall or the outer peripheral surface of the connector body. A pair of locking means for setting the rotation position to be constant with the rotation of the release member at the time of connecting and releasing the pipe on the opposed surface of The pipe is configured to be pressed and released by a wall so that the pipe can be easily released from the connected state.
【０００３】しかしながら、この種の従来例のものは配
管接続前のコネクター本体の運搬時や保管時などにコネ
クター本体の後端側や係合孔もしくは切欠き窓部分より
塵埃やごみなどが侵入してコネクター本体内部に残留
し、接続すべき配管を挿着して接続が完了後にソケット
体の爪壁と配管の環状膨出壁との間の係圧部において配
管側の表面処理層を摩耗させたり、さらにはシールリン
グ部材と小径室の内周面あるいは配管の外周面との間に
侵入した塵埃やごみなどが介在してそのシール性を阻害
するという問題があった。さらに侵入した塵埃やごみな
どが配管接続後に内部を流れる流体により下流側配管部
品に移動して閉塞やカジリによる機能障害を起こすとい
う問題もあった。[0003] However, in this type of prior art, dust and dirt enter the rear end of the connector main body, the engaging hole or the cut-out window when the connector main body is transported or stored before the pipe is connected. After the pipe to be connected is inserted and the connection is completed, the surface treatment layer on the pipe side is abraded at the pressure section between the claw wall of the socket body and the annular bulging wall of the pipe. In addition, there is a problem that dust or dirt invading between the seal ring member and the inner peripheral surface of the small diameter chamber or the outer peripheral surface of the pipe interferes with the sealing performance. Further, there is also a problem that invading dust and dirt move to the downstream piping parts due to the fluid flowing inside after the piping connection, and cause a functional failure due to blockage and galling.
【０００４】かかる問題の発生を防止するため、本出願
人は図４（ａ）（ｂ）に示すようなクイック・コネクタ
ーを先に提案した（特願平１０−３１３７２６号）。こ
のクイック・コネクターは、軸芯内部に、先端側の連結
筒壁２２の流通孔２４に連なって拡径した小径室２３−
１と大径室２３とを貫設してなるコネクター本体２１の
該小径室２３−１部に、シールリング部材２６とブッシ
ュ部材２７とを内装せしめ、かつ前記大径室２３の周壁
のなす対向部位に設けられた係合孔２１−１の部分（あ
るいは切欠き窓部分）に、それぞれ爪壁２５−１となし
て内方へ付勢された弾発壁２１−２を有するソケット部
材２５を前記コネクター本体２１と一体（あるいは別
体）に設け、前記弾発壁２１−２を接続される配管Ｐ側
の環状膨出壁部Ｐ′に係圧せしめて接続する構成であっ
て、前記コネクター本体２１の中心から放射状に延長し
かつ前記配管Ｐの環状膨出壁Ｐ′の外径以上の径に亘っ
て設けられた複数の切れ目２８−１により画定された複
数の楔状部分２８−２が形成された底部を有する有底円
筒体からなる弾性キャップ部材２８を、前記コネクター
本体２１の後端部側より被着して前記係合孔２１−１部
分をその円筒壁により囲繞するごとく構成したものであ
る。In order to prevent such a problem from occurring, the present applicant has previously proposed a quick connector as shown in FIGS. 4A and 4B (Japanese Patent Application No. 10-313726). This quick connector has a small-diameter chamber 23-
The seal ring member 26 and the bush member 27 are provided inside the small-diameter chamber 23-1 of the connector main body 21 formed by penetrating the large-diameter chamber 23 and the large-diameter chamber 23. A socket member 25 having a resilient wall 21-2 which is formed as a claw wall 25-1 and is urged inward as a claw wall 25-1 is provided in a portion of an engagement hole 21-1 (or a notch window portion) provided in the portion. The connector is provided integrally (or separately) with the connector main body 21, and the elastic wall 21-2 is connected by being pressed against an annular bulging wall portion P 'on the pipe P side to be connected, wherein the connector A plurality of wedge-shaped portions 28-2 extending radially from the center of the main body 21 and defined by a plurality of cuts 28-1 provided over the outer diameter of the annular bulging wall P 'of the pipe P are provided. An elastic key consisting of a bottomed cylinder with a formed bottom The-up member 28, in which by adhering the rear end side of the connector body 21 is constituted as will be surrounded by the cylindrical wall of the engagement hole 21-1 parts.
【０００５】[0005]
【発明が解決しようとする課題】上記したキャップ付き
クイック・コネクターは、配管との接続の前後を問わず
常に防塵効果を有し、かつ配管の接続作業には何らの支
障もなく接続できるという優れた性能を有するも、この
クイック・コネクターの場合はコネクター本体２１の中
心から放射状に延長しかつ前記配管Ｐの環状膨出壁Ｐ′
の外径以上の径に亘って設けられた複数の切れ目２８−
１の部分が露出した状態にあるため、クイック・コネク
ターが水中に没したりすると当該切れ目部分から水がコ
ネクター内部に侵入するおそれがある。コネクター本体
２１の後端側よりコネクター本体内部に水が侵入する
と、ソケット部材２５の爪壁と配管Ｐの環状膨出壁との
間の係圧部における配管側の表面処理層の摩耗およびシ
ールリング部材と小径室の内周面あるいは配管の外周面
との間のシール性が劣化するなどの問題を惹起するた
め、例えば自動車の車体の一部が水に漬かってもこれに
対応し得るシール性能を発揮するクイック・コネクター
が求められていた。The quick connector with a cap described above is excellent in that it always has a dustproof effect before and after connection to the pipe and can be connected without any trouble in the connection work of the pipe. However, in the case of this quick connector, the radially extending wall P 'of the pipe P extends radially from the center of the connector body 21.
A plurality of cuts 28-
Since the portion 1 is exposed, if the quick connector is immersed in water, water may enter the inside of the connector from the cut portion. When water enters the inside of the connector main body from the rear end side of the connector main body 21, abrasion of the surface treatment layer on the pipe side and the seal ring in the pressure portion between the claw wall of the socket member 25 and the annular bulging wall of the pipe P are caused. In order to cause problems such as deterioration of the sealing performance between the member and the inner peripheral surface of the small diameter chamber or the outer peripheral surface of the pipe, for example, a sealing performance capable of coping with this even if a part of the body of an automobile is immersed in water. There was a need for a quick connector that would demonstrate.
【０００６】本発明は、このような実状に鑑みなされた
もので、自動車用配管などに使用した場合に車体やエン
ジンの一部が水に漬かって１ｍｍＡｑ〜１ｍＡｑの水圧
が作用してもこれに対応し得るシール性能を発揮する細
径配管接続用コネクターを提供することを目的とするも
のである。[0006] The present invention has been made in view of such a situation, and when used for automobile piping or the like, even if a part of a vehicle body or an engine is immersed in water and a water pressure of 1 mmAq to 1 mAq acts thereon, the present invention is applied to this. It is an object of the present invention to provide a connector for connecting a small-diameter pipe that exhibits a corresponding sealing performance.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
本発明は、軸芯内部に、先端側の連結筒壁の流通孔に連
なって拡径した小径室と大径室とを貫設してなるコネク
ター本体の該小径室部に、シールリング部材とブッシュ
部材とを内装せしめ、かつ前記大径室の周壁のなす対向
部位に設けられた係合孔部分あるいは切欠き窓部分に、
それぞれ爪壁となして内方へ付勢された弾発壁を有する
ソケット部材を前記コネクター本体と別体あるいは一体
に設け、前記弾発壁を接続される配管側の環状膨出壁部
に係圧せしめて接続する構成であって、前記コネクター
本体の中心から放射状に延長しかつ前記配管の環状膨出
壁の外径以上の径に亘って設けられた複数の切れ目によ
り画定された複数の楔状部分が形成された底部を有する
有底円筒体からなる弾性キャップ部材を、前記コネクタ
ー本体の後端部側より被着して前記係合孔部分あるいは
切欠き窓部分をその円筒壁により囲繞するごとく構成さ
れた細径配管接続用コネクターにおいて、前記弾性キャ
ップ部材の後端部に筒形の弾性シールキャップを嵌着し
て当該弾性キャップ部材の後端部をシールする構造とな
した細径配管接続用コネクターを要旨とし、また前記弾
性キャップ部材の先端部には、コネクター本体との間に
弾性シールリング部材を組付けたり、さらに前記細径配
管として、少なくとも端末加工に必要な加工代に対応す
る管端部を除いて、ほぼその外周面の全長に亘って耐ピ
ッチング性を有しかつ押出成形可能な厚膜状の一層また
は複層の樹脂被覆層を有する細径金属管を用いた場合、
前記管端部の非樹脂被覆層の部分は前記コネクター本体
内に収納するようにしたりし、さらにまた前記弾性キャ
ップおよび弾性シールキャップは１ｍｍＡｑ〜１ｍＡｑ
の水圧に耐える気密性を有するものである。In order to achieve the above-mentioned object, the present invention provides a small-diameter chamber and a large-diameter chamber which are connected to a flow hole of a connecting cylinder wall on the distal end side and have a large diameter. In the small-diameter chamber portion of the connector main body, a seal ring member and a bush member are internally provided, and an engaging hole portion or a notch window portion provided in an opposing portion formed by a peripheral wall of the large-diameter chamber,
Socket members each having a resilient wall urged inward as a claw wall are provided separately or integrally with the connector main body, and are connected to an annular bulging wall portion on the piping side to which the resilient wall is connected. A plurality of wedges defined by a plurality of cuts extending radially from the center of the connector main body and extending over the outer diameter of the annular bulging wall of the pipe. An elastic cap member formed of a bottomed cylindrical body having a bottom formed with a portion is attached from the rear end side of the connector main body, and the engaging hole portion or the cutout window portion is surrounded by the cylindrical wall. In the configured connector for connecting a small-diameter pipe, the small-diameter pipe connection has a structure in which a cylindrical elastic seal cap is fitted to a rear end of the elastic cap member to seal a rear end of the elastic cap member. The connector is a gist, and an elastic seal ring member is attached to a distal end portion of the elastic cap member between the elastic cap member and the connector body. Further, as the small-diameter pipe, a pipe corresponding to at least a processing allowance required for terminal processing. Except for the end portion, when using a small-diameter metal tube having a thick film-like single or multiple resin coating layer capable of being extruded and having pitching resistance over substantially the entire length of its outer peripheral surface,
The portion of the non-resin coating layer at the end of the tube may be housed in the connector body, and the elastic cap and the elastic seal cap may be 1 mmAq to 1 mAq.
It is airtight enough to withstand the water pressure of
【０００８】なお本発明においては、前記弾性キャップ
部材の開放端部には前記コネクター本体の外周部の段部
と係合する係止部が設けられ、また前記弾性キャップ部
材の底部には前記配管の外径にほぼ合致する中央薄肉部
が設けられ、さらに前記切れ目により画定された楔状部
分の先端部の１つは前記底部の中央部に設けられた切れ
目により画定されたほぼ円形あるいは多角形の中央部分
と連続していることを特徴とする。そして前記中央部分
はさらに切れ目により複数の小部分に画定され、該小部
分はそれぞれ前記楔状部分のうち別個の先端部と連続し
ていることが好ましい。In the present invention, a locking portion is provided at the open end of the elastic cap member to engage with a step on the outer peripheral portion of the connector body, and the piping is provided at the bottom of the elastic cap member. A central thin portion substantially corresponding to the outer diameter of the base, and one of the tips of the wedge-shaped portions defined by the cuts has a substantially circular or polygonal shape defined by a cut provided at the center of the bottom. It is characterized by being continuous with the central part. Preferably, the central portion is further defined by a cut into a plurality of small portions, each of which is continuous with a separate tip of the wedge-shaped portion.
【０００９】[0009]
【発明の実施の形態】図１は本発明の細径配管接続用コ
ネクターの一実施例の接続状態を示す図で、（ａ）は長
手方向の半截図、（ｂ）は（ａ）のイーイ線上の断面
図、図２は同上他の実施例の接続状態を示す図で、
（ａ）は長手方向の半截図、（ｂ）は弾性シールキャッ
プ部の別の実施例の部分拡大断面図、図３は同上別の接
続状態を示す長手方向の半截図であり、１はコネクター
本体、２は連結筒壁、３は大径室、４は流通孔、５はソ
ケット体、６は弾性シールリング部材、７はブッシュ部
材、８は弾性キャップ部材、９は弾性シールキャップ、
Ｐは配管、Ｐ１は外面樹脂被覆配管である。FIG. 1 is a view showing a connection state of an embodiment of a connector for connecting a small-diameter pipe according to the present invention, in which (a) is a half cutaway view in a longitudinal direction, and (b) is an ii in (a). FIG. 2 is a cross-sectional view taken along a line, and FIG.
(A) is a half-sectional view in the longitudinal direction, (b) is a partially enlarged cross-sectional view of another embodiment of the elastic seal cap portion, and FIG. 3 is a half-sectional view in the longitudinal direction showing another connection state of the same, and 1 is a connector. Main body, 2 is a connecting cylinder wall, 3 is a large diameter chamber, 4 is a flow hole, 5 is a socket body, 6 is an elastic seal ring member, 7 is a bush member, 8 is an elastic cap member, 9 is an elastic seal cap,
P is a pipe, and P1 is an outer resin-coated pipe.
【００１０】コネクター本体１は、軸芯内部に先端側に
突設した樹脂チューブ（図示せず）の差込み用の連結筒
壁２の流通孔４に連って拡径した小径室３−１とその背
後に大径室３とを貫設してなるものであって、該小径室
３−１部にゴム材あるいは樹脂材などによる弾性シール
リング部材６と筒状のブッシュ部材７とを内装せしめ、
かつ大径室３側の周壁のなす対向部位に設けた切欠き窓
１−１部分に、前方に突設してその中間附近の内方に傾
斜した外方への屈曲部を爪壁５−１となして内側に付勢
する複数の（図示の実施例では一対の）弾発壁１−２を
有するソケット体５を前記コネクター本体１の周壁と一
体に形成している。The connector body 1 includes a small-diameter chamber 3-1 which is expanded along a flow hole 4 of a connecting tube wall 2 for insertion of a resin tube (not shown) protruding from the distal end side inside the shaft core. The large-diameter chamber 3 is provided behind it, and an elastic seal ring member 6 and a cylindrical bush member 7 made of a rubber material or a resin material are provided inside the small-diameter chamber 3-1. ,
In addition, a notch window 1-1 provided at an opposing portion formed by the peripheral wall of the large-diameter chamber 3 is provided with a frontwardly projecting portion and an inwardly bent outwardly inclined portion near an intermediate portion of the notch window 5-. A socket body 5 having a plurality of (a pair in the illustrated embodiment) resilient walls 1-2 biasing inward as one is formed integrally with the peripheral wall of the connector main body 1.
【００１１】弾性キャップ部材８は合成樹脂製などから
なり、接続すべき配管Ｐの外径にほぼ合致する中央薄肉
部８−１と、その中心から放射状に延長しかつ前記配管
Ｐの環状膨出壁Ｐ′の外径以上の径に亘って設けられた
複数の切れ目８−２により画定された複数の楔状部分１
０１、１０２、…１０ｎが形成された底部８−３を有す
る有底円筒体からなり、弾性キャップ部材８を前記コネ
クター本体１の後端部側より被着して前記切欠き窓１−
１部分をその円筒壁８−４により囲繞するよう圧入す
る。なお図示の実施例では底部８−３の中央部に薄肉部
８−１を設けたものを説明するが、必要に応じて底部８
−３全体を均一な厚さの薄肉部として形成したり、ある
いは該底部８−３の外周部から中心部に向かって徐々に
厚さが減少する断面テーパ状に形成することもできる。The elastic cap member 8 is made of a synthetic resin or the like, and has a central thin portion 8-1 substantially matching the outer diameter of the pipe P to be connected, a radial extension from the center thereof, and an annular bulge of the pipe P. A plurality of wedge-shaped portions 1 defined by a plurality of cuts 8-2 provided over the outer diameter of the wall P 'or more.
0 1, 10 2, ... 10 n be a bottomed cylindrical body having a bottom 8-3 is formed, the window 1 the notch by adhering from the elastic cap member 8 rear end of the connector body 1 −
One part is press-fitted so as to be surrounded by its cylindrical wall 8-4. In the illustrated embodiment, the thin portion 8-1 is provided at the center of the bottom portion 8-3.
-3 may be formed as a thin portion having a uniform thickness, or may be formed in a tapered cross section in which the thickness gradually decreases from the outer peripheral portion to the central portion of the bottom portion 8-3.
【００１２】さらに前記弾性キャップ部材８の開放端部
には前記コネクター本体１の外周部に設けられた大径の
段部１−３と係合するよう内方に向けて突出する係止部
８−５が設けられている。Further, a locking portion 8 protruding inward so as to engage with a large-diameter step portion 1-3 provided on the outer peripheral portion of the connector main body 1 is provided at an open end of the elastic cap member 8. -5 is provided.
【００１３】本発明は上記の弾性キャップ部材８の後端
部に筒形の弾性シールキャップ９を嵌着するもので、そ
の取付け構造は図に示すごとく弾性キャップ部材８の後
端部に当該キャップ部材８の外径よりやや小径の嵌着用
筒体８−６を突設し、この嵌着用筒体８−６に弾性キャ
ップ部材８の外径とほぼ同一外径を有する筒形の弾性シ
ールキャップ９を凹凸嵌合方式にて嵌着したものであ
る。この筒形の弾性シールキャップ９は中央部に接続す
べき配管Ｐの外径よりやや小径の、好ましくはほぼ合致
する貫通孔９−１が穿設され、外周端部には相手側の弾
性キャップ部材８に対する凹凸嵌合用係止部９−２が形
成されている。According to the present invention, a cylindrical elastic seal cap 9 is fitted to the rear end of the elastic cap member 8, and the mounting structure is as shown in FIG. A tubular elastic seal cap 8-6 having a diameter slightly smaller than the outer diameter of the member 8 is protruded, and the outer diameter of the elastic cap member 8 is substantially the same as the outer diameter of the elastic cap member 8 on the fitted cylindrical body 8-6. 9 is fitted by an uneven fitting method. The cylindrical elastic seal cap 9 is formed with a through hole 9-1 having a diameter slightly smaller than the outer diameter of the pipe P to be connected to the center thereof, and preferably substantially matching the outer diameter thereof. A concave / convex engaging portion 9-2 for the member 8 is formed.
【００１４】上記構成の細径配管接続用コネクターの場
合は、配管Ｐの接続前で運搬あるいは保管時に、予め有
底円筒体からなる弾性キャップ部材８を筒形の弾性シー
ルキャップ９を嵌着した状態で前記コネクター本体１の
後端部側より被着して前記切欠き窓１−１部分をその円
筒壁８−４により囲繞し、かつ好ましくは係止部８−５
をコネクター本体１の外周部の段部１−３に係合させて
弾性キャップ部材８をコネクター本体１の外周部の所定
位置に保持させる。この状態で運搬、保管などをすれば
弾性キャップ部材８によりコネクター本体１の後端部や
切欠き窓１−１より塵埃やごみなどが侵入することが防
止できるのである。In the case of the connector for connecting a small-diameter pipe having the above-described configuration, a cylindrical elastic seal cap 9 is fitted to an elastic cap member 8 having a bottomed cylindrical body before transportation or storage before connecting the pipe P. In this state, the notch window 1-1 is attached from the rear end side of the connector main body 1 to be surrounded by the cylindrical wall 8-4, and preferably the locking portion 8-5 is provided.
Is engaged with the step 1-3 on the outer peripheral portion of the connector main body 1 to hold the elastic cap member 8 at a predetermined position on the outer peripheral portion of the connector main body 1. If the transport and storage are performed in this state, dust and dirt can be prevented from entering the rear end of the connector main body 1 and the notch window 1-1 by the elastic cap member 8.
【００１５】つぎに配管Ｐをコネクター本体１に接続す
る際には、配管Ｐを弾性シールキャップ９の貫通孔９−
１を貫通するとともにその先端部によって弾性キャップ
部材８の薄肉部８−１を強く押圧すれば該薄肉部は切れ
目８−２より破断され該切れ目８−２により画定された
楔状部分１０１、１０２、…１０ｎの先端部側が内方に
弯曲し折り込まれ前記配管Ｐの外周面を摺動するので、
配管Ｐをコネクター本体１内に挿入することが可能とな
り、ついで該配管Ｐの環状膨出壁Ｐ′により弾発壁１−
２が拡開し、さらに挿入作業を継続することにより環状
膨出壁Ｐ′が通過すると弾発壁１−２が元の位置に戻っ
て爪壁５−１が環状膨出壁Ｐ′と係圧して接続が完了す
る。この接続構造においては、弾性シールキャップ９の
作用により弾性キャップ部材８の底部も完全に囲繞され
るので水に対しても優れたシール性能を発揮し、当該配
管が水に漬かった１ｍｍＡｑ〜１ｍＡｑの水圧が作用し
た使用状態下でもコネクター本体１の後端部より水の侵
入がほぼ完全に防止されることになるのである。なお筒
形の弾性シールキャップ９は、予め弾性キャップ部材８
の後端部に嵌着しておくばかりでなく、前記弾性シール
キャップ９を配管Ｐに挿入しておき、ついで環状膨出壁
Ｐ′を成形した後、コネクター本体１に配管Ｐを組み付
けて接続し、その後に弾性キャップ部材８の後端部に嵌
着することもできる。Next, when connecting the pipe P to the connector body 1, the pipe P is connected to the through hole 9-of the elastic seal cap 9.
1 and strongly presses the thin portion 8-1 of the elastic cap member 8 with the tip thereof, the thin portion is broken at the cut 8-2 and the wedge-shaped portions 10 1 and 10 defined by the cut 8-2. 2, ... 10 the n front end portion of curved and folded inwardly slides an outer circumferential surface of the pipe P,
The pipe P can be inserted into the connector main body 1, and the annular bulging wall P 'of the pipe P allows the elastic wall 1-
2 is expanded, and the insertion operation is continued, so that when the annular bulging wall P 'passes, the resilient wall 1-2 returns to the original position, and the claw wall 5-1 engages with the annular bulging wall P'. Press to complete the connection. In this connection structure, the bottom of the elastic cap member 8 is completely surrounded by the action of the elastic seal cap 9, so that it exhibits excellent sealing performance against water, and the pipe is immersed in water of 1 mmAq to 1 mAq. Water can be almost completely prevented from entering from the rear end of the connector body 1 even in the use state where the water pressure acts. Note that the cylindrical elastic seal cap 9 is
In addition to fitting the pipe P to the connector body 1, the elastic seal cap 9 is inserted into the pipe P, and the annular bulging wall P 'is formed. After that, the elastic cap member 8 can be fitted to the rear end.
【００１６】そして上記実施例では、ソケット部材５が
コネクター本体１と一体で切欠き窓１−１部分に、前方
に突設してその中間付近の内方に傾斜した外方への屈曲
部を爪壁５−１となして内側に付勢する弾発壁１−２を
有するものについて説明したが、このような形式のコネ
クターに限定するものではなく、これに類似した構成を
有する種々のコネクターにも適用できることはいうまで
もない。In the above embodiment, the socket member 5 is integrally formed with the connector main body 1 so as to protrude forward from the notch window 1-1 and to have an outwardly bent portion inwardly inclined near the middle thereof. Although the one having the resilient wall 1-2 biasing inward as the claw wall 5-1 has been described, the present invention is not limited to such a type of connector, and various connectors having a configuration similar to this are provided. Needless to say, it can be applied to
【００１７】また図２（ａ）に示す細径配管接続用コネ
クターは、図１に示す構成のコネクターにおいて、弾性
キャップ部材８の先端側に弾性シールリング部材６−１
を設けた構成となしたもので、この接続構造の場合は前
記と同様、弾性シールキャップ９の作用により弾性キャ
ップ部材８の底部も完全に囲繞されるので水に対しても
優れたシール性能を発揮し、当該配管が水に漬かった１
ｍｍＡｑ〜１ｍＡｑの水圧が作用した使用状態下でもコ
ネクター本体１の後端部より水の侵入がほぼ完全に防止
されるのみならず、弾性キャップ部材８の先端側からの
水の侵入もほぼ完全に防止されることとなる。なお図２
（ｂ）に示すように筒形の弾性シールキャップ９の底面
と弾性キャップ８の嵌着用筒体８−６の端面のいずれか
一方にＯリング６−２を設ければコネクター本体１内へ
の水の侵入は一層効果的に防止することができる。The connector for connecting a small-diameter pipe shown in FIG. 2A is the same as the connector shown in FIG.
In this connection structure, the bottom of the elastic cap member 8 is completely surrounded by the action of the elastic seal cap 9 in the same manner as described above, so that excellent sealing performance against water can be achieved. Activated, the pipe was immersed in water 1
Even under a use condition in which a water pressure of 1 mmAq to 1 mAq is applied, not only the entry of water from the rear end portion of the connector body 1 is almost completely prevented, but also the entry of water from the distal end side of the elastic cap member 8 is almost completely. Will be prevented. FIG. 2
If an O-ring 6-2 is provided on one of the bottom surface of the cylindrical elastic seal cap 9 and the end surface of the cylindrical body 8-6 for fitting the elastic cap 8 as shown in FIG. Water intrusion can be more effectively prevented.
【００１８】さらに図３に示す細径配管接続用コネクタ
ーは、前記図２に示す構成のコネクターの細径配管とし
て、少なくとも端末加工に必要な加工代に対応する管端
部を除いて、ほぼその外周面の全長に亘って耐ピッチン
グ性を有しかつ押出成形可能な厚膜状の一層または複層
の樹脂被覆層Ｐ１−１を有する細径金属管Ｐ１を適用し
た例で、この場合は前記管端部の非樹脂被覆層の部分Ｐ
１−２が前記コネクター本体１内に収納されたもので、
この場合は樹脂被覆層Ｐ１−１の端末部が図示のごとく
中央薄肉部８−１より内側に位置するように非樹脂被覆
層部Ｐ１−２を設ける。すなわち、細径配管として外面
樹脂被覆管を用いた場合には、非樹脂被覆層部Ｐ１−２
が弾性キャップ部材８により完全に覆われるように接続
構成するものである。なお上記実施例においてもこの筒
形の弾性シールキャップ９には中央部に接続すべき細径
金属管Ｐ１の外面の樹脂被覆層Ｐ１−１の外径よりやや
小径の、好ましくはほぼ合致する貫通孔９−１が穿設さ
れている。Further, the small-diameter pipe connection connector shown in FIG. 3 is substantially the same as the small-diameter pipe of the connector having the configuration shown in FIG. 2 except for at least a pipe end portion corresponding to a processing margin required for terminal processing. This is an example in which a small-diameter metal tube P1 having a thick film-like single-layered or multi-layered resin coating layer P1-1 which has pitting resistance over the entire length of the outer peripheral surface and is extrudable is used. Part P of the non-resin coating layer at the pipe end
1-2 is housed in the connector body 1,
In this case, the non-resin coating layer portion P1-2 is provided such that the terminal portion of the resin coating layer P1-1 is located inside the central thin portion 8-1 as shown in the drawing. That is, when the outer resin-coated tube is used as the small-diameter pipe, the non-resin-coated layer portion P1-2
Are connected so as to be completely covered by the elastic cap member 8. Also in the above embodiment, the cylindrical elastic seal cap 9 has a through hole having a diameter slightly smaller than the outer diameter of the resin coating layer P1-1 on the outer surface of the small-diameter metal tube P1 to be connected to the center portion, and preferably substantially the same. A hole 9-1 is provided.
【００１９】[0019]
【発明の効果】以上述べた通り本発明は、有底円筒体か
らなる弾性キャップ部材をコネクター本体の後端部側よ
り被着して該コネクター本体の切欠き窓部分をその円筒
壁により囲繞するごとく構成した接続構造において、前
記弾性キャップ部材の後端部に筒形の弾性シールキャッ
プを嵌着して当該弾性キャップ部材の後端部をシールす
る構造となし、さらに弾性キャップ部材の先端側に弾性
シールリング部材を内装下構成とすることにより、自動
車用配管などに使用した場合に車体やエンジンの一部が
水に漬かって１ｍｍＡｑ〜１ｍＡｑの水圧が作用しても
これに十分に対応し得る優れた防水効果が得られる。ま
た、細径配管として外面樹脂被覆管を用いた場合でも、
端末加工を施すために設けられた非樹脂被覆層部がコネ
クター本体内に収納されるように接続構成するので、外
面樹脂被覆管のほぼ全長にわたり耐ピッチング性や耐ス
プラッシュ性の優れた接続構造を得ることができるとい
う効果が得られる。As described above, according to the present invention, the elastic cap member formed of a bottomed cylindrical body is attached from the rear end side of the connector body, and the cutout window portion of the connector body is surrounded by the cylindrical wall. In the connection structure thus configured, a tubular elastic seal cap is fitted to the rear end of the elastic cap member to seal the rear end of the elastic cap member. By using the elastic seal ring member under the interior, even when a part of the vehicle body or the engine is immersed in water and applied with a water pressure of 1 mmAq to 1 mAq when used for automobile piping or the like, it can sufficiently cope with this. Excellent waterproof effect can be obtained. In addition, even when an outer resin-coated pipe is used as the small-diameter pipe,
Since the connection structure is configured so that the non-resin coating layer part provided for terminal processing is stored in the connector body, a connection structure with excellent pitting resistance and splash resistance over almost the entire length of the outer resin coating tube The effect of being able to obtain is obtained.
【図１】本発明の細径配管接続用コネクターの一実施例
の接続状態を示す図で、（ａ）は長手方向の半截図、
（ｂ）は（ａ）のイーイ線上の断面図である。FIG. 1 is a view showing a connection state of an embodiment of a connector for connecting a small-diameter pipe according to the present invention, wherein FIG.
FIG. 2B is a cross-sectional view taken along the line II in FIG.
【図２】同上他の実施例の接続状態を示す図で、（ａ）
は長手方向の半截図、（ｂ）は弾性シールキャップ部の
別の実施例の部分拡大断面図である。FIG. 2 is a diagram showing a connection state of another embodiment of the present invention;
FIG. 7B is a half sectional view in the longitudinal direction, and FIG. 7B is a partially enlarged sectional view of another embodiment of the elastic seal cap portion.
【図３】同上別の接続状態を示す長手方向の半截図であ
る。FIG. 3 is a half sectional view in the longitudinal direction showing another connection state of the above.
【図４】本発明の対象とする従来の細径配管接続用コネ
クターの一例を示す長手方向の半截図である。FIG. 4 is a half sectional view in the longitudinal direction showing an example of a conventional connector for connecting a small diameter pipe to which the present invention is applied.
１ コネクター本体 １−１ 切欠き窓 １−２ 弾発壁 ２ 連結筒壁 ３ 大径室 ３−１ 小径室 ４ 流通孔 ５ ソケット体 ５−１ 爪壁 ６ 弾性シールリング部材 ７ 筒状のブッシュ部材 ８ 弾性キャップ部材 ８−１ 中央薄肉部 ８−２ 切れ目 ８−３ 底部 ８−４ 円筒壁 ８−５ 係止部 ８−６ 嵌着用筒体 ９ 弾性シールキャップ ９−１ 貫通孔 １０１、１０２、…１０ｎ 楔状部分 Ｐ 配管 Ｐ１ 外面樹脂被覆配管DESCRIPTION OF SYMBOLS 1 Connector main body 1-1 Notch window 1-2 Resilient wall 2 Connecting cylinder wall 3 Large diameter chamber 3-1 Small diameter chamber 4 Flow hole 5 Socket body 5-1 Claw wall 6 Elastic seal ring member 7 Cylindrical bush member Reference Signs List 8 elastic cap member 8-1 central thin portion 8-2 cut 8-3 bottom 8-4 cylindrical wall 8-5 locking portion 8-6 fitting cylinder 9 elastic seal cap 9-1 through hole 10 1 , 10 2 …… 10 n wedge-shaped part P pipe P1 outer resin-coated pipe
フロントページの続き Ｆターム(参考） 3J106 AA04 AB01 BA01 BB01 BC04 BD01 BE12 BE14 BE19 CA06 CA12 EA03 EB02 EC01 EC06 EC07 ED02 ED05 EE02 Continued on front page F-term (reference) 3J106 AA04 AB01 BA01 BB01 BC04 BD01 BE12 BE14 BE19 CA06 CA12 EA03 EB02 EC01 EC06 EC07 ED02 ED05 EE02
Claims (4)
に連なって拡径した小径室と大径室とを貫設してなるコ
ネクター本体の該小径室部に、シールリング部材とブッ
シュ部材とを内装せしめ、かつ前記大径室の周壁のなす
対向部位に設けられた係合孔部分あるいは切欠き窓部分
に、それぞれ爪壁となして内方へ付勢された弾発壁を有
するソケット部材を前記コネクター本体と別体あるいは
一体に設け、前記弾発壁を接続される配管側の環状膨出
壁部に係圧せしめて接続する構成であって、前記コネク
ター本体の中心から放射状に延長しかつ前記配管の環状
膨出壁の外径以上の径に亘って設けられた複数の切れ目
により画定された複数の楔状部分が形成された底部を有
する有底円筒体からなる弾性キャップ部材を、前記コネ
クター本体の後端部側より被着して前記係合孔部分ある
いは切欠き窓部分をその円筒壁により囲繞するごとく構
成された細径配管接続用コネクターにおいて、前記弾性
キャップ部材の後端部に筒形の弾性シールキャップを嵌
着して当該弾性キャップ部材の後端部をシールする構造
となしたことを特徴とする細径配管接続用コネクター。1. A small-diameter chamber portion of a connector main body having a small-diameter chamber and a large-diameter chamber which are connected to a flow hole of a connecting cylinder wall on the distal end side and extend through the inside of a shaft core. And a bush member, and a resilient wall urged inward as a claw wall at an engaging hole portion or a notch window portion provided at an opposing portion formed by a peripheral wall of the large diameter chamber. A socket member having the following structure is provided separately or integrally with the connector main body, and the resilient wall is connected by being pressed against the annular bulging wall portion on the pipe side to be connected, from the center of the connector main body. An elastic cap comprising a bottomed cylindrical body extending radially and having a bottom formed with a plurality of wedge-shaped portions defined by a plurality of cuts provided over the outer diameter of the annular bulging wall of the pipe. Attach the member to the rear end of the connector body A cylindrical elastic seal cap attached to the rear end of the elastic cap member, wherein the elastic cap member is attached from the side so as to surround the engagement hole portion or the cutout window portion with its cylindrical wall. Wherein the rear end portion of the elastic cap member is sealed.
ネクター本体との間に弾性シールリング部材が組付けら
れていることを特徴とする請求項１記載の細径配管接続
用コネクター。2. The connector for connecting a small-diameter pipe according to claim 1, wherein an elastic seal ring member is attached to a distal end portion of the elastic cap member between the elastic cap member and a connector body.
工に必要な加工代に対応する管端部を除いて、ほぼその
外周面の全長に亘って耐ピッチング性を有しかつ押出成
形可能な厚膜状の樹脂被覆層を有する細径金属管を用
い、前記管端部の非樹脂被覆層の部分が前記コネクター
本体内に収納されていることを特徴とする請求項１また
は２記載の細径配管接続用コネクター。3. The thin-diameter pipe has a pitching resistance substantially over the entire length of an outer peripheral surface thereof except for a pipe end portion corresponding to a processing margin required for terminal processing, and has a thickness capable of being extruded. The small-diameter metal tube having a film-shaped resin coating layer, wherein a portion of the non-resin coating layer at the end of the tube is housed in the connector main body. Connector for piping connection.
ップは１ｍｍＡｑ〜１ｍＡｑの水圧に耐える気密性を有
することを特徴とする請求項１〜３のいずれか１項記載
の細径配管接続用コネクター。4. The connector for connecting a small-diameter pipe according to claim 1, wherein the elastic cap and the elastic seal cap have airtightness to withstand a water pressure of 1 mmAq to 1 mAq.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11218907A JP2001050456A (en) | 1999-08-02 | 1999-08-02 | Connector for connecting small diameter tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11218907A JP2001050456A (en) | 1999-08-02 | 1999-08-02 | Connector for connecting small diameter tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001050456A true JP2001050456A (en) | 2001-02-23 |
Family
ID=16727193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11218907A Pending JP2001050456A (en) | 1999-08-02 | 1999-08-02 | Connector for connecting small diameter tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001050456A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002122281A (en) * | 2000-10-10 | 2002-04-26 | Tokai Rubber Ind Ltd | Female connector |
| JP2005308211A (en) * | 2004-03-22 | 2005-11-04 | Tokai Rubber Ind Ltd | Tube connecting quick connector |
| JP2006084026A (en) * | 2004-09-13 | 2006-03-30 | Ti Group Automotive Systems Llc | Quick connector for high pressure application |
| JP2011058641A (en) * | 2004-03-22 | 2011-03-24 | Tokai Rubber Ind Ltd | Quick connector for connecting tube |
| CN106224665A (en) * | 2016-08-23 | 2016-12-14 | 柳州市国正机电物资有限责任公司 | The installation method of compressor blast connection |
-
1999
- 1999-08-02 JP JP11218907A patent/JP2001050456A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002122281A (en) * | 2000-10-10 | 2002-04-26 | Tokai Rubber Ind Ltd | Female connector |
| JP2005308211A (en) * | 2004-03-22 | 2005-11-04 | Tokai Rubber Ind Ltd | Tube connecting quick connector |
| JP2011058641A (en) * | 2004-03-22 | 2011-03-24 | Tokai Rubber Ind Ltd | Quick connector for connecting tube |
| JP2006084026A (en) * | 2004-09-13 | 2006-03-30 | Ti Group Automotive Systems Llc | Quick connector for high pressure application |
| CN106224665A (en) * | 2016-08-23 | 2016-12-14 | 柳州市国正机电物资有限责任公司 | The installation method of compressor blast connection |
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