JP2507301Y2 - Pipe fitting - Google Patents

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】本考案は、油空圧機器間の流路で
あるパイプ、ホース等の管体を接続する管継手に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for connecting pipes such as pipes and hoses which are flow paths between hydraulic and pneumatic equipment.

【０００２】[0002]

【従来の技術】従来、パイプ、ホース等の管体の接続継
手としては喰い込み式継手が代表的であるが、かかる管
継手はそれ自体が回動しないため、接続状態の管体が捩
じれ易く、その状態のまま高圧流路で長時間継続使用す
ると管体が破裂する危険性が大きく、仮にその捩じれを
修正するために管継手を回動させると、一方の管体の捩
じれは修正出来るが、他方の管体は修正出来ず、よって
修正作業が非常に面倒であった。2. Description of the Related Art Conventionally, bite type joints have been typical as connecting joints for pipes such as pipes and hoses. However, since such pipe joints do not rotate themselves, the connected pipes are easily twisted. However, if the pipe body is ruptured if it is continuously used for a long time in the high pressure flow path in that state, if the pipe joint is rotated to correct the twist, the twist of one pipe can be corrected. , The other tube could not be modified, so the repair work was very troublesome.

【０００３】そこで、上記欠点を解消するため、実公昭
６１−１４７８６号として、雌部材のソケットに嵌挿さ
れた雄部材のプラグの接合部に断面半円形のボール用凹
溝を周設し、一方ソケットの内周面に上記ボール用凹溝
より幅広な環溝を周設し、環溝及びボール用凹溝に跨が
る様にボール群を係入して環状配列し、更にプラグに止
め輪を外嵌して成る回動自在な管継手が考案されたが、
かかる管継手は組立時にボール群を投入した後、該ボー
ル群が環溝のプラグ挿入側端部に当接するまでプラグを
引き出すと共に止め輪を外嵌する必要があって甚だ面倒
な作業となる欠点を有していた。[0003] Therefore, in order to overcome the above drawbacks, Utility Model
No. 61-14786 , a concave groove for a ball having a semicircular cross section is provided around a joint portion of a plug of a male member which is fitted in a socket of a female member, and a width wider than the concave groove for a ball is provided on an inner peripheral surface of the socket. A ring joint is formed around the ring groove, and the ball group is engaged so as to straddle the ring groove and the ball groove and arranged in an annular shape. Was devised,
In such a pipe joint, it is necessary to pull out the plug and externally fit the retaining ring until the ball group comes into contact with the plug insertion side end of the annular groove after the ball group is put in at the time of assembly, which is a very troublesome work. Had.

【０００４】又、上記管継手は主構成部品であるプラグ
及びソケットの他に、がたつき防止用部品として止め輪
が別途必要となる欠点、及び止め輪が無かったり、脱落
した時にプラグとソケットの正常な組付位置がずれて管
継手自体の収縮が発生したり、これに応じて管体へも悪
影響を及ぼす欠点を有し、又環溝とボール用凹溝の形
状、形成位置及び止め輪の装着位置に寸法誤差がある
と、プラグとソケット間にがたつきが発生するため、各
構成部品の高精度化に伴ってコスト高を招来する欠点を
有していた。In addition to the plug and socket which are the main components of the above-mentioned pipe joint, there is a drawback that a snap ring is additionally required as a rattling prevention component, and there is no snap ring or when the plug and socket fall out. The normal assembly position of the pipe will shift and the pipe joint itself will contract, and the pipe body will be adversely affected accordingly, and the shape, forming position and stopper of the ring groove and ball groove If there is a dimensional error in the mounting position of the wheel, rattling occurs between the plug and the socket, and there is a drawback that the cost becomes higher as the accuracy of each component increases.

【０００５】又、上記管継手は叙述の欠点の他に、ボー
ル群の内外輪を結ぶ線が本体軸線に対し直角のため、高
圧流路に使用すると上記軸線直交方向にかかる負荷がス
トレートにボール群に作用してプラグとソケットの回動
に支障を来す欠点も有していた。In addition to the above-mentioned drawbacks of the pipe joint, since the line connecting the inner and outer races of the ball group is perpendicular to the axis of the main body, when it is used in a high-pressure passage, the load applied in the direction orthogonal to the axis is straight. It also has a drawback that it acts on the group and hinders the rotation of the plug and the socket.

【０００６】[0006]

【考案が解決しようとする課題】本考案は、がたつき防
止用の別途部品が不要で構成部品を減少させると共に組
立作業を簡易化し、ソケットとプラグの接合部を構成す
る部品形状及び形成位置に若干のずれが生じてもがたつ
きなく組み立て、而も高圧流体からの負荷に拘らずプラ
グとソケットの円滑回動を可能として管体の捩じれ防止
を図る様にした管継手を提供せんとするものである。SUMMARY OF THE INVENTION The present invention eliminates the need for a separate component for preventing rattling, reduces the number of components, simplifies the assembly work, and configures the shape and forming position of the component forming the joint between the socket and the plug. There is no rattling even if there is a slight displacement in the pipe, and a pipe joint is provided that prevents the twisting of the pipe body by allowing the plug and socket to rotate smoothly regardless of the load from the high-pressure fluid. To do.

【０００７】[0007]

【課題を解決するための手段】本考案は、上記従来技術
に基づく構成部品が多く組立作業が面倒な課題に鑑み、
弾性を有するガスケットを差込孔終端面とプラグの先端
部の間に設け、ガスケットの弾性復元力によりソケット
とプラグに設けた内外周溝の対向斜面で鋼球を挟着支持
することによって、ガスケットがシール材の本質的作用
の他にがたつき防止用部品と成って構成部品を減らすと
共に、ソケットへのプラグの挿入、押圧後、鋼球を装入
し、押圧解除する簡単な作業で組み立て、又ソケットと
プラグの接合部における各部位に寸法精度が要求される
課題に鑑み、ソケットの内周溝及びプラグの外周溝の形
成位置が若干ずれていても、ガスケットの弾性力がカバ
ーして対向斜面による鋼球の挟着支持を可能とし、ソケ
ットとプラグをがたつきなく組み立てる。DISCLOSURE OF THE INVENTION The present invention has been made in view of the problems that the assembly work is complicated because there are many components based on the above-mentioned prior art.
A gasket having elasticity is provided between the end surface of the insertion hole and the tip of the plug, and the elastic restoring force of the gasket causes the steel balls to be sandwiched and supported by the opposing slopes of the inner and outer peripheral grooves provided in the socket and the plug. In addition to the essential function of the sealing material, it is a rattling prevention component to reduce the number of components, and a simple operation of inserting the plug into the socket, pressing the steel ball after inserting it, and releasing the press In view of the problem that dimensional accuracy is required for each part of the joint between the socket and the plug, even if the formation positions of the inner peripheral groove of the socket and the outer peripheral groove of the plug are slightly displaced, the elastic force of the gasket covers The steel balls can be sandwiched and supported by the opposite slopes, and the socket and plug can be assembled without rattling.

【０００８】又、高圧負荷によるソケットとプラグの回
動性が悪化する課題に鑑み、鋼球の装入部位である内外
周溝の対向斜面で鋼球を挟着支持することによって、鋼
球の内外輪（対向斜面との接点）を結ぶ線が所定接触角
を以て傾斜するために、高圧負荷が作用しても各鋼球に
対する負荷抵抗が緩和されてソケットとプラグの円滑回
動を可能とする様にして上記欠点を解消せんとしたもの
である。Further, in view of the problem that the turnability of the socket and the plug is deteriorated by a high pressure load, the steel balls are sandwiched and supported by the opposite slopes of the inner and outer peripheral grooves, which are the charging parts of the steel balls, to support the steel balls. Since the line connecting the inner and outer rings (contact points with the opposite slopes) is inclined with a predetermined contact angle, the load resistance on each steel ball is alleviated even when a high pressure load is applied, allowing smooth rotation of the socket and plug. In this way, the above drawbacks cannot be solved.

【０００９】[0009]

【作用】本考案にあっては、ソケットへのプラグの挿
入、押圧後、鋼球装入して押圧解除すれば組付完了と成
ることで組立作業を簡易化し、又ガスケットの弾性復元
力を利用してソケットの内周溝とプラグの外周溝の対向
斜面で鋼球を挟着支持することによって、ガスケットが
シール材の作用とソケットとプラグ間のがたつき防止の
両作用を行い、又各鋼球の内外輪を結ぶ線が傾斜してい
るために、管継手のプラグに作用する軸線直交方向負荷
がソケットに直接作用せず、かかる負荷が軽減されてソ
ケットとプラグが円滑に回動する。In the present invention, the assembly work is simplified by inserting the plug into the socket, pressing it, then inserting the steel ball and releasing the press to simplify the assembly work, and to improve the elastic restoring force of the gasket. By utilizing the steel balls to be sandwiched and supported by the opposing inclined surfaces of the inner peripheral groove of the socket and the outer peripheral groove of the plug, the gasket performs both the function of the seal material and the prevention of rattling between the socket and the plug. Since the line connecting the inner and outer rings of each steel ball is inclined, the load acting on the plug of the pipe joint in the direction orthogonal to the axis does not act directly on the socket, and the applied load is reduced and the socket and plug rotate smoothly. To do.

【００１０】[0010]

【実施例】以下本考案の一実施例を図面に基づいて説明
すると、１はその両端にパイプ、ホース等の管体を接続
する管継手の本体であり、該本体１はソケット２にプラ
グ３を回動自在に挿設して成り、ソケット２の接合部側
は中央部且つ軸線方向に大径な差込孔４を形成した六角
柱状のソケット主体部５と成し、ソケット２の他端側に
は段部を介して管体用の接続部６を一体形成し、該接続
部６には中央部且つ軸線方向に差込孔４に連通する流路
孔７を貫設している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a main body of a pipe joint for connecting pipes such as pipes and hoses to both ends thereof, and the main body 1 is a socket 2 and a plug 3 Is rotatably inserted, and the joint side of the socket 2 is a hexagonal column-shaped socket main body 5 having a central portion and an insertion hole 4 having a large diameter in the axial direction, and the other end of the socket 2. A connecting portion 6 for the pipe body is integrally formed on the side through a step portion, and a flow passage hole 7 communicating with the insertion hole 4 in the central portion and in the axial direction is formed through the connecting portion 6.

【００１１】８は差込孔４の終端面に嵌入したガスケッ
トであり、該ガスケット８は流路孔７と連通する孔９を
中央に貫設したリング状で、耐油性、耐摩耗性に優れ且
つ弾性を有するニトリロゴム製と成している。Reference numeral 8 is a gasket fitted into the end surface of the insertion hole 4, and the gasket 8 is a ring-shaped member having a hole 9 communicating with the flow path hole 7 formed in the center thereof and is excellent in oil resistance and wear resistance. It is made of elastic nitrilo rubber.

【００１２】又、ソケット２の差込孔４内に挿設するプ
ラグ３は一端側を差込孔４と略同径の挿入部１０、中間
部を六角ナット部１１、他端側を管体用の接続部１２と
成すと共に、中央部且つ軸線方向にしてソケット２の流
路孔７と同軸上に流路孔１３を貫設し、挿入部１０の先
端部１４を半球凸面状に形成し、かかる挿入部１０を差
込孔４に挿入すると共に先端部１４をガスケット８端面
に押圧埋没させて、プラグ３によりガスケット８を圧縮
変形させると共に、プラグ３とガスケット８を密接状態
と成している。Further, the plug 3 inserted into the insertion hole 4 of the socket 2 has an insertion portion 10 having substantially the same diameter as the insertion hole 4 on one end side, a hexagonal nut portion 11 on the intermediate portion, and a tubular body on the other end side. And a connecting portion 12 for use in the central portion and an axial direction, and a flow path hole 13 is provided coaxially with the flow path hole 7 of the socket 2 to form a distal end portion 14 of the insertion portion 10 in a hemispherical convex shape. The insertion portion 10 is inserted into the insertion hole 4, the tip portion 14 is pressed and embedded in the end surface of the gasket 8, and the gasket 8 is compressed by the plug 3.
Deform and plug 3 and gasket 8 are in close contact
Is done.

【００１３】尚、図面上接続部６、12の外周面は螺刻し
ているが、かかる形状に何等限定されず、要するにあら
ゆる管体の接続端部に対応可能な様に多種多様なパター
ンのものでも良い。Although the outer peripheral surfaces of the connecting portions 6 and 12 are threaded in the drawing, they are not limited to such shapes and, in short, have various patterns so as to be applicable to the connecting end portions of all pipes. Anything is fine.

【００１４】15は差込孔４の近傍においてソケット２内
周面に周設した断面台形状の内周溝であり、該内周溝15
に対向する断面台形状の外周溝16をプラグ３の挿入部10
中間部にも周設し、内周溝15及び外周溝16の深さは鋼球
17、17a …の径の半分に設定している。Reference numeral 15 denotes an inner peripheral groove having a trapezoidal cross section which is provided around the inner peripheral surface of the socket 2 in the vicinity of the insertion hole 4.
The outer peripheral groove 16 having a trapezoidal cross section facing the
The inner peripheral groove 15 and the outer peripheral groove 16 have a steel ball
It is set to half the diameter of 17, 17a ....

【００１５】内周溝１５と外周溝１６に跨がる様に多数
の鋼球１７、１７ａ…を装入し、該鋼球１７、１７ａ…
は圧縮変形したガスケット８の弾性復元力によりソケッ
ト２の内周溝１５におけるガスケット８から遠方側の斜
面１８と、プラグ３の外周溝１６におけるガスケット８
近接側の斜面１９で挟着支持されている。A large number of steel balls 17, 17a ... Are loaded so as to straddle the inner peripheral groove 15 and the outer peripheral groove 16, and the steel balls 17, 17a.
Is due to the elastic restoring force of the gasket 8 which is compressed and deformed, and the sloped surface 18 of the socket 2 in the inner circumferential groove 15 on the side distant from the gasket 8 and the gasket 8 in the outer circumferential groove 16 of the plug 3.
It is sandwiched and supported by the slope 19 on the close side.

【００１６】20はソケット２に貫設した装入孔であり、
ソケット２外周面より内周溝15へ到達、連通させ、装入
孔20に栓体21を圧入している。Reference numeral 20 is a charging hole penetrating the socket 2.
From the outer peripheral surface of the socket 2, the inner peripheral groove 15 is reached and communicated with, and the plug body 21 is press-fitted into the charging hole 20.

【００１７】又、他の実施例においては、ソケット２の
差込孔４の孔縁部から内方側にかけてソケット２内周面
に山形突条22及び断面台形状の内周溝23を周設し、山形
突条22の内方斜面で内周溝23の１斜面を鋼球17、17a …
を挟着する一方の斜面24と成すと共に、山形突条22の外
方斜面を導入斜面25と成し、一方プラグ３の挿入部10に
山形突条22に対向する幅広断面台形状の外周溝26を周設
すると共に、該外周溝26の深さは山形突条22との間で鋼
球17、17a …を挿通自在な深さと成し、外周溝26におけ
るガスケット８から遠方側の導入斜面27と、ソケット２
の山形突条22における外方の導入斜面25との間に鋼球1
7、17a …が挿通自在な幅を設け、これらの挿通箇所を
装入部28と成している。Further, in another embodiment, a chevron projection 22 and a trapezoidal inner peripheral groove 23 are provided on the inner peripheral surface of the socket 2 from the hole edge of the insertion hole 4 of the socket 2 to the inner side. Then, one slope of the inner circumferential groove 23 is formed by the steel balls 17, 17a on the inner slope of the chevron projection 22.
And the outer slope of the chevron-shaped projection 22 is formed as the introduction ramp 25, and the insertion section 10 of the plug 3 faces the chevron-shaped projection 22 and has a wide cross-section trapezoidal outer peripheral groove. 26, and the depth of the outer peripheral groove 26 is such that the steel balls 17, 17a ... Can be inserted between the outer peripheral groove 26 and the chevron projection 22, and the introduction slope on the far side from the gasket 8 in the outer peripheral groove 26. 27 and socket 2
Of the steel ball between the outer slope 25 and the mountain-shaped ridge 22
7 and 17a are provided with a width that allows them to be inserted, and these insertion points are formed as charging portions 28.

【００１８】又、プラグ３の外周溝26におけるガスケッ
ト８の近接側に斜面29を設け、本体１の組付け時に内周
溝23の斜面24と対向する外周溝26の斜面29で鋼球17、17
a …を挟着支持する様に成している。A slope 29 is provided on the outer peripheral groove 26 of the plug 3 in the vicinity of the gasket 8, and the steel ball 17 is formed by the slope 29 of the outer peripheral groove 26 facing the slope 24 of the inner peripheral groove 23 when the main body 1 is assembled. 17
It is designed to sandwich and support a ...

【００１９】次に、本考案に係る管継手の組立方法、手
順及び管継手自体の作用について説明すると、図１に示
した第１の考案の場合には、先ずソケット２の差込孔４
にプラグ３の挿入部10を差し込み、その先端部14をガス
ケット８に埋没させる様にプラグ３を押圧することによ
って、ガスケット８を圧縮状態と成すと共に本体１を収
縮状態と成し、かかる収縮時にソケット２の内周溝15と
プラグ３の外周溝16を揃え、次に装入孔20から鋼球17、
17a …を装入すると共に装入孔20に栓体21を圧入し、最
後にプラグ３の押圧を解除すると、ガスケット８の弾性
復元力でプラグ３が自動的に押し戻され本体１が伸長す
ると共に、内周溝15及び外周溝16の対向する斜面18、19
で鋼球17、17a …を挟着し管継手の組立が完了する。Next, the assembling method and procedure of the pipe joint according to the present invention and the operation of the pipe joint itself will be described. In the case of the first device shown in FIG. 1, first, the insertion hole 4 of the socket 2 is first described.
By inserting the insertion portion 10 of the plug 3 into the plug and pressing the plug 3 so that the tip portion 14 thereof is embedded in the gasket 8, the gasket 8 is in a compressed state and the main body 1 is in a contracted state. The inner peripheral groove 15 of the socket 2 and the outer peripheral groove 16 of the plug 3 are aligned, and then the charging hole 20 through the steel ball 17,
When the plug 17 is inserted and the plug 21 is pressed into the insertion hole 20 and the pressure of the plug 3 is finally released, the elastic restoring force of the gasket 8 automatically pushes back the plug 3 and the main body 1 expands. , The inner peripheral groove 15 and the outer peripheral groove 16 facing slopes 18, 19
Then, the steel balls 17, 17a are sandwiched and the assembly of the pipe joint is completed.

【００２０】又、図３に示した第２の考案の場合には、
上記組立方法、手順と同様にガスケット８を圧縮状態と
成すと共に本体１を収縮状態と成し、かかる収縮時に鋼
球17、17a …を挟着するソケット２とプラグ３の対向斜
面24、29間に所定間隔を確保し、かかる装入部28から鋼
球17、17a …を送り込んだ後、プラグ３の押圧を解除す
ると、ガスケット８の弾性復元力でプラグ３が自動的に
押し戻され本体１が伸長すると共に、内周溝23と外周溝
26の対向する斜面24、29で鋼球17、17a …を挟着し管継
手の組立が完了する。Further, in the case of the second device shown in FIG. 3,
Similar to the above assembling method and procedure, the gasket 8 is in the compressed state and the main body 1 is in the contracted state, and the steel balls 17, 17a ... After the steel balls 17, 17a ... Are fed from the charging portion 28 at a predetermined interval, the pressure of the plug 3 is released, the elastic restoring force of the gasket 8 automatically pushes the plug 3 back, and the main body 1 The inner groove 23 and the outer groove extend
The steel balls 17, 17a ... Are sandwiched between the slopes 24, 29 facing each other at 26, and the assembly of the pipe joint is completed.

【００２１】又、ガスケット８の両面及び周面の３面
は、差込孔４の終端面、終端側内周面及び挿入部10の先
端部14と密着状態となし、又ガスケット８の弾性復元力
で鋼球17、17a …をソケット２の斜面18、24とプラグ３
の斜面19、29で挟着支持している。Also, the two surfaces of the gasket 8 and the three peripheral surfaces are in close contact with the terminal surface of the insertion hole 4, the inner peripheral surface of the terminal end and the tip portion 14 of the insertion portion 10, and the gasket 8 is elastically restored. By force, the steel balls 17, 17a ... are attached to the slopes 18, 24 of the socket 2 and the plug 3
It is sandwiched and supported by slopes 19 and 29.

【００２２】[0022]

【考案の効果】要するに本考案は、差込孔４を設けたソ
ケット２内周面に内周溝１５を周設すると共にソケット
２に装入孔２０を貫設し、上記差込孔４の終端面側に弾
性素材から成るガスケット８を嵌入し、差込孔４に回動
自在に挿設したプラグ３に外周溝１６を周設すると共に
該外周溝１６は内周溝１５と断面同一形状にして対向位
置に形成し、挿没されたプラグ３により圧縮変形したガ
スケット８の弾性復元力により内周溝１５と外周溝１６
の対向斜面１８、１９で鋼球１７、１７ａ…を挟着支持
する様にしたので、ガスケット８の作用によりシール性
を確保出来ると共に、圧縮嵌入されたガスケット８の反
作用により鋼球１７、１７ａ…、ソケット２、プラグ３
の密着性、位置保持を行うことが出来るため、実公昭６
１−１４７８６号公報の管継手に必要であった止め輪自
体を不要にすることが出来、又ガスケット８の反作用を
利用した組み立てによりプラグ３のソケット２への押圧
挿入等の作業で本体１の組立が完了し、従来の回動自在
な管継手に必要であったボール群投入後の諸作業を排除
して組立作業の簡易化を図ることが出来、又内周溝１５
と外周溝１６の対向斜面１８、１９による鋼球１７、１
７ａ…の挟着支持はガスケット８の反作用により常時維
持されているため、プラグ３とソケット２の接合部に急
激な回転力が作用しても円滑に回動させることが出来
る。[Effects of the Invention] In short, the present invention is a socket provided with the insertion hole 4.
An inner circumferential groove 15 is provided on the inner circumferential surface of the ket 2 and a socket is provided.
2 has a charging hole 20 penetrating therethrough, and is provided on the end surface side of the insertion hole 4Bullet
Made of sex materialInsert the gasket 8 and rotate it into the insertion hole 4.
The outer peripheral groove 16 is provided around the freely inserted plug 3.
The outer peripheral groove 16 has the same sectional shape as the inner peripheral groove 15 and is opposed to the inner peripheral groove 15.
To formGas that is compressed and deformed by the plug 3
Due to the elastic restoring force of the sket 8Inner peripheral groove 15 and outer peripheral groove 16
The steel balls 17, 17a ... Are sandwiched and supported by the opposite slopes 18, 19 of
To doAs a result, the gasket 8 acts to seal
Of the gasket 8 that has been compressed and fitted,
By the action, the steel balls 17, 17a ..., Socket 2, plug 3
The adhesion and position ofIn order,Actual public 6
For the pipe joint of JP-A-1-14786necessaryAndSnap ring
No body neededToAnd the reaction of the gasket 8
Pressing the plug 3 to the socket 2 by the assembly used
Assembly of the main body 1 is completed by operations such as insertion, and conventional rotation is possible
Eliminates the work required after inserting a ball group, which was necessary for various pipe joints
Can simplify the assembly work., Inner circumferential groove 15
And steel balls 17, 1 by the opposing slopes 18, 19 of the outer peripheral groove 16
The sandwiching support of 7a is always maintained by the reaction of the gasket 8.
Since it is held, the joint between the plug 3 and socket 2
It can be rotated smoothly even if a strong rotational force is applied.
You.

【００２３】又、ガスケット８の反作用はソケット２及
びプラグ３における内周溝15及び外周溝16の形成位置の
ずれ、寸法誤差、これらから発生するがたつき発生にも
対応することが出来、又各種流路で長時間継続使用して
も管継手本体１にがたつき、伸縮等が発生せず、接続さ
れた管体に悪影響を及ぼさず、又鋼球17、17a …の挟着
支持は斜面18、19で行っているために、本体１の軸線直
交方向に熱、圧力膨張負荷が作用してもソケット２とプ
ラグ３の回動に支障を来さず、よって弛緩状態で捩じれ
ていた管体に急激に高圧流体が流れても、ソケット２又
はプラグ３の円滑な回動により管体の捩じれが即座に修
正出来、管体破裂を防止出来る。Further, the reaction of the gasket 8 can cope with the deviation of the formation position of the inner peripheral groove 15 and the outer peripheral groove 16 in the socket 2 and the plug 3, dimensional error, and rattling caused by these. Even if it is continuously used in various flow paths for a long time, the pipe joint body 1 does not rattle, does not expand or contract, does not adversely affect the connected pipe body, and supports the steel balls 17, 17a ... Since the slopes 18 and 19 are used, the socket 2 and the plug 3 are twisted in a relaxed state even if heat or pressure expansion load acts in the direction orthogonal to the axis of the main body 1, and thus does not hinder the rotation of the socket 2 and the plug 3. Even if a high-pressure fluid suddenly flows in the pipe body, the twist of the pipe body can be immediately corrected by the smooth rotation of the socket 2 or the plug 3, and the pipe body can be prevented from bursting.

【００２４】又、第２の考案においては差込孔４を設け
たソケット２内周面の孔縁側に山形突条２２及び断面台
形状の内周溝２３を周設すると共に、上記差込孔４の終
端面側に弾性素材から成るガスケット８を嵌入し、差込
孔４に回動自在に挿設したプラグ３に幅広断面台形状の
外周溝２６を周設すると共に、該外周溝２６と上記山形
突条２２は対向させて両者間に装入部２８を形成し、挿
没されたプラグ３により圧縮変形したガスケット８の弾
性復元力により内周溝２３と外周溝２６の対向斜面２
４、２９で鋼球１７、１７ａ…を挟着支持する様にした
ので、第１の考案の管継手と同様な効果を挙げると共
に、組立時には山形突条２２と外周溝２６の間隔部であ
る装入部２８から鋼球１７、１７ａ…を装入出来、又管
継手本体１を縦方向に配備する管体の接続部に使用する
場合、本体１をソケット２上方よりプラグ３を挿入する
様に起立状態で組み立てるため、ソケット２とプラグ３
の接続部全周に亘って形成される装入部２８から鋼球１
７、１７ａ…を多数同時に装入出来、管継手を簡単に組
立出来る等その実用的効果甚だ大なるものである。Further, in the second invention, a mountain-shaped protrusion 22 and an inner peripheral groove 23 having a trapezoidal cross section are provided around the inner peripheral surface of the socket 2 having the insertion hole 4, and the insertion hole is formed. A gasket 8 made of an elastic material is fitted on the end surface side of the plug 4, and a plug 3 rotatably inserted into the insertion hole 4 is provided with an outer peripheral groove 26 having a trapezoidal cross section, and the outer peripheral groove 26 the chevron ridge 22 forms a loading section 28 therebetween are opposed, interpolation
The bullet of the gasket 8 which is compressed and deformed by the submerged plug 3.
Of the inner peripheral groove 23 and the outer peripheral groove 26 due to the sexual restoring force
Since the steel balls 17, 17a ... Are sandwiched and supported by Nos. 4, 29, the same effect as the pipe joint of the first invention is obtained, and at the time of assembly, it is the interval between the chevron projection 22 and the outer peripheral groove 26. Steel balls 17, 17a ... Can be loaded from the loading portion 28, and when the pipe joint main body 1 is used as a connecting portion of a pipe body that is vertically arranged, the plug 1 is inserted from above the socket 2 of the main body 1. Socket 2 and plug 3 for assembly in the upright position
From the charging portion 28 formed over the entire circumference of the connecting portion of the steel ball 1
A large number of 7, 17a ... Can be charged at the same time, and the pipe joint can be easily assembled, which is a great practical effect.

【図面の簡単な説明】[Brief description of drawings]

【図１】本考案に係る管継手の半断面正面図である。FIG. 1 is a front view of a half section of a pipe joint according to the present invention.

【図２】図１の管継手の組立手順を示す要部拡大断面図
である。FIG. 2 is an enlarged sectional view of an essential part showing an assembling procedure of the pipe joint of FIG.

【図３】他の実施例の半断面正面図である。FIG. 3 is a front view in half cross section of another embodiment.

【図４】図３の管継手の組立手順を示す要部拡大断面図
である。FIG. 4 is an enlarged sectional view of an essential part showing an assembling procedure of the pipe joint of FIG.

【符号の説明】[Explanation of symbols]

２ ソケット ３ プラグ ４ 差込孔 ８ ガスケット 15 内周溝 16 外周溝 17、17a … 鋼球 18 斜面 19 斜面 20 装入孔 22 山形突条 23 内周溝 24 斜面 26 外周溝 28 装入部 29 斜面 2 Socket 3 Plug 4 Insertion hole 8 Gasket 15 Inner peripheral groove 16 Outer peripheral groove 17, 17a ... Steel ball 18 Slope 19 Slope 20 Charging hole 22 Mountain projection 23 Inner groove 24 Slope 26 Outer groove 28 Charging part 29 Slope

Claims (2)

(57)【実用新案登録請求の範囲】(57) [Scope of utility model registration request] 【請求項１】 差込孔を設けたソケット内周面に内周溝
を周設すると共にソケットに装入孔を貫設し、上記差込
孔の終端面側に弾性素材から成るガスケットを嵌入し、
差込孔に回動自在に挿設したプラグに外周溝を周設する
と共に該外周溝は内周溝と断面同一形状にして対向位置
に形成し、挿設されたプラグにより圧縮変形したガスケ
ットの弾性復元力により内周溝と外周溝の対向斜面で鋼
球を挟着支持する様にしたことを特徴とする管継手。1. An inner peripheral groove is formed around an inner peripheral surface of a socket provided with an insertion hole and a charging hole is formed through the socket, and a gasket made of an elastic material is fitted on the end surface side of the insertion hole. Then
An outer peripheral groove is formed around a plug rotatably inserted in the insertion hole, and the outer peripheral groove is formed at the opposite position so as to have the same sectional shape as the inner peripheral groove, and the gasket is compressed and deformed by the inserted plug.
A pipe joint characterized in that a steel ball is sandwiched and supported by the opposing slopes of the inner peripheral groove and the outer peripheral groove by the elastic restoring force of the hood. 【請求項２】 差込孔を設けたソケット内周面の孔縁側
に山形突条及び断面台形状の内周溝を周設すると共に、
上記差込孔の終端面側に弾性素材から成るガスケットを
嵌入し、差込孔に回動自在に挿設したプラグに幅広断面
形状の外周溝を周設すると共に、該外周溝と上記山形突
条は対向させて両者間に装入部を形成し、挿設されたプ
ラグにより圧縮変形したガスケットの弾性復元力により
内周溝と外周溝の対向斜面で鋼球を挟着支持する様にし
たことを特徴とする管継手。2. A mountain-shaped ridge and an inner peripheral groove having a trapezoidal cross section are provided on the hole edge side of the inner peripheral surface of the socket having the insertion hole, and
A gasket made of an elastic material is fitted on the terminal surface side of the insertion hole, and a peripheral cross-section groove having a wide cross-section is provided around a plug rotatably inserted in the insertion hole. The strips face each other to form a charging part between the two, and the inserted
A pipe joint characterized in that a steel ball is sandwiched and supported by opposing slopes of an inner peripheral groove and an outer peripheral groove by elastic restoring force of a gasket that is compressed and deformed by a lug .