JPH0235109Y2 - - Google Patents

Description

【考案の詳細な説明】 「産業上の利用分野」 本考案は先端に雄ねじ部を有する管体を簡単に
接続出来る迅速管継手に関するものである。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a quick pipe joint that can easily connect a pipe body having a male thread at its tip.

「従来の技術」 被接続管体の先端に有する雄ねじ部を管継手と
接続する場合、従前の例によれば被接続管体或い
は管継手のいずれか一方を回動しないと螺合接続
することはできない。そのため、接続部分に螺条
部を有している管体を接続・分離する場合には、
作業員がいちいち雄ねじ部をスパナ等の工具を用
いて時間をかけて回動している。``Prior art'' When connecting a male threaded portion at the tip of a pipe to be connected to a pipe fitting, according to the conventional example, it is necessary to rotate either the pipe to be connected or the pipe fitting to form a threaded connection. I can't. Therefore, when connecting and separating pipes that have threads on their connecting parts,
A worker takes a lot of time to turn each male thread using a tool such as a spanner.

「考案が解決しようとする問題点」 従前の管継手を用いて雄ねじ部を持つ被接続管
体を接続する場合、上記のように管継手か被接続
管体のいずれか一方を回動しなければならず、そ
のために接続作業に手数を要し、また、このとき
雄ねじ部が管継手内を螺進して行くため、接続作
業に比較的長い時間を必要とし、作業者の疲労が
激しく、作業能率が悪かつた。その上、管継手側
の端面と被接続管体の雄ねじ部の端面とは、両者
が相対的に回動するため、シールリングが捩じれ
て突き合せ面の気密性が損なわれるおそれがあつ
た。更に又、雄ねじ部のねじ山を破損させないよ
うな手段も講じられてきたが、構成が複雑になる
ばかりでなく、管継手の外径を不必要に大きくす
る不都合を生じ、また重量が増して操作性に欠け
る等の問題点を有していた。``Problems that the invention aims to solve'' When connecting pipes with external threads using a conventional pipe fitting, either the pipe fitting or the pipe to be connected must be rotated as described above. Therefore, the connection work is labor-intensive, and at this time, the male thread threads through the pipe joint, so the connection work requires a relatively long time, causing severe worker fatigue. Work efficiency was poor. Furthermore, since the end face on the pipe joint side and the end face of the male threaded portion of the connected pipe body rotate relative to each other, there is a risk that the seal ring may be twisted and the airtightness of the abutting surfaces may be impaired. Furthermore, measures have been taken to prevent the threads of the male thread from being damaged, but this not only complicates the structure, but also causes the inconvenience of unnecessarily increasing the outside diameter of the pipe joint, and increases the weight. It had problems such as lack of operability.

本考案は管体の雄ねじ部と噛合する掛止爪を半
径方向に擺動させることにより係脱し、管体の接
続・分離を容易にできるようにすることを目的と
するものである。 The object of the present invention is to enable easy connection and separation of the tube bodies by sliding the locking pawl that engages with the male threaded portion of the tube body in the radial direction to engage and disengage the hook.

「問題点を解決するための手段」 本考案は継手主筒体の正面部に、前部内面に管
体の雄ねじ部を噛合する雌ねじを持つ咬合部を有
し、後部内面に傾斜した後部片を有する複数の掛
止爪を半径方向に擺動可能に設け、各掛止爪の支
点外周をスプリングバンドで締着し、また、継手
主筒体の外周面部には前記掛止爪の後部片を求心
方向に押圧する押圧部を有するスリーブを後方か
ら圧縮ばねで付勢させて摺動可能に装着すると共
に、継手主筒体の内部には、先端に前記雄ねじ部
の端面を密封するシールリングを有し、前記管体
の端面で押されて後退する摺動筒を圧縮ばねで付
勢させて摺動可能に収容した構成を採用し、上記
問題点を解決する手段とするものである。"Means for Solving Problems" The present invention has an engaging part on the front face of the main cylinder of the joint, which has a female thread that engages the male thread of the pipe body on the inner surface of the front part, and a rear part that is inclined on the inner face of the rear part. A plurality of latching pawls are provided so as to be slidable in the radial direction, and the outer periphery of the fulcrum of each latching pawl is fastened with a spring band, and a rear piece of the latching pawl is attached to the outer peripheral surface of the joint main cylinder. A sleeve having a pressing part that presses in the centripetal direction is urged by a compression spring from the rear and is slidably attached, and a seal ring is provided inside the joint main cylinder to seal the end surface of the male threaded part at the tip. In order to solve the above-mentioned problems, the present invention employs a structure in which a sliding tube that is pushed back by the end face of the tube is urged by a compression spring and slidably accommodated.

「作用」 圧縮ばねに抗してスリーブを後退させると、こ
のスリーブの内面に設けた押圧部により各掛止爪
の後部に設けた所要の勾配を付けた後部片が求心
方向に押圧されることによつて後部片の基部、す
なわち、スプリングバンドで締着された部位を支
点にし、該掛止爪の前部に設けた咬合部を遠心方
向に押し上げて各咬合部の内径を拡大させる。"Operation" When the sleeve is retreated against the compression spring, the pressing part provided on the inner surface of the sleeve presses the rear piece with the required slope provided at the rear of each latch claw in the centripetal direction. By using the base of the rear piece, that is, the part fastened by the spring band, as a fulcrum, the engaging parts provided at the front part of the latch claw are pushed up in the distal direction, thereby enlarging the inner diameter of each engaging part.

スリーブを後退させた状態で咬合部の中心部
に、管体端部の雄ねじ部を挿入し、その先端で管
継手に収容した摺動筒を圧縮ばねに抗して押し込
むと共に、同先端のシールリングによつて管体の
端面を密封する。この状態で、スリーブから手を
離すと、圧縮ばねにより前進するスリーブの押圧
部によつて各掛止爪が求心方向に押し下げられ、
内面に雌ねじ部を有する咬合部を管体の雄ねじ部
に接近させて当該雌ねじ部を係合させて管体を強
固に接続する。 With the sleeve retracted, insert the male thread at the end of the tube body into the center of the occlusal part, push the sliding tube housed in the pipe joint at its tip against the compression spring, and press the seal at the tip. A ring seals the end face of the tube. In this state, when you release your hand from the sleeve, each latch claw is pushed down in the centripetal direction by the pressing part of the sleeve that moves forward due to the compression spring.
An engaging part having a female thread on the inner surface is brought close to the male thread of the tube, and the female thread is engaged to firmly connect the tube.

「実施例」 １は中心部に軸線方向に向けて通孔２を有する
継手後部体で、同後部体１は外周部中央に六角締
付部３を有し、該締付部３の後方には雄ねじ部４
を、また、前方には雄ねじ部を全外周に有する螺
条筒５を夫々設け、螺条筒５に継手内筒体６が螺
着され、継手後部体１と継手内筒体６とによつて
継手主筒体１０を形成する。``Example'' 1 is a joint rear body having a through hole 2 in the axial direction in the center, the rear body 1 has a hexagonal tightening part 3 in the center of the outer circumference, and a hexagonal tightening part 3 is provided at the rear of the tightening part 3. is male thread part 4
In addition, a threaded tube 5 having a male threaded portion on the entire outer periphery is provided at the front, and a joint inner cylinder 6 is screwed onto the screw tube 5, and the joint rear body 1 and the joint inner cylinder 6 are connected to each other. The joint main cylindrical body 10 is then formed.

螺条筒５の内周面には前記通孔２より大径な摺
動筒収容部５ａを設け、通孔２と収容部５ａとの
境界部に形成した段部２ａで後記する摺動筒３２
のストツパを形成している。 A sliding tube accommodating portion 5a having a larger diameter than the through hole 2 is provided on the inner circumferential surface of the threaded tube 5, and a sliding tube accommodating portion 5a, which will be described later, is formed at the boundary between the through hole 2 and the accommodating portion 5a. 32
It forms a stopper.

継手内筒体６の前端部には等間隔をもつて４個
の切欠部７を形成すると共に、求心方向に向けて
小突部８を設け、更に継手内筒体６の前部外周面
には、同一円周上に１条の溝９を設ける。また継
手内筒体６の内面には、小突部８を有する小片部
分を除く全周に雌ねじ１１を形成する。雌ねじ１
１の前部に、前記切欠部７の内方に位置させて前
筒体１２を螺着し、螺条筒５と前筒体１２の内面
を同一内径の無段差面に形成する。 Four notches 7 are formed at equal intervals on the front end of the inner joint cylindrical body 6, and a small protrusion 8 is provided in the centripetal direction. In this case, one groove 9 is provided on the same circumference. Further, a female thread 11 is formed on the inner surface of the joint inner cylindrical body 6 all around the circumference except for the small piece having the small protrusion 8 . Female thread 1
A front cylinder 12 is screwed onto the front part of the threaded cylinder 5 and the front cylinder 12 so as to be located inside the notch 7, and the inner surfaces of the threaded cylinder 5 and the front cylinder 12 are formed into stepless surfaces having the same inner diameter.

１３は平面形状が略Ｔ字形の掛止爪で、広幅の
前部には内周面に雌ねじを有する咬合部１４を形
成し、小幅の後部には前記切欠部７に挿入できる
幅を有し、その後端部を所要角度外方に屈折させ
て内外面に同一の傾斜角度の傾斜面１６を形成し
て後部片１５を形成する。この掛止爪１３を継手
内筒体６に半径方向に擺動可能に取付け、前記溝
９に装着したスプリングバンド４８で掛止爪１３
を締着する。 Reference numeral 13 denotes a latch claw having a substantially T-shaped planar shape, the wide front part of which is formed with an interlocking part 14 having a female thread on the inner circumferential surface, and the narrow rear part thereof having a width that can be inserted into the notch part 7. , the rear end portion is bent outward at a predetermined angle to form inclined surfaces 16 having the same inclination angle on the inner and outer surfaces, thereby forming the rear piece 15. This latching pawl 13 is attached to the joint inner cylindrical body 6 so as to be slidable in the radial direction, and the latching pawl 13 is attached to the spring band 48 attached to the groove 9.
Tighten.

１７は掛止爪１３の咬合部１４の外周面に形成
した傾斜面１６と対称的に形成した傾斜面で、両
傾斜面１６，１７の間に位置する後端部屈折部に
位置させてスプリングバンド４８を収容するため
の溝１８を円周方向に形成する。 Reference numeral 17 denotes an inclined surface formed symmetrically with the inclined surface 16 formed on the outer circumferential surface of the engaging portion 14 of the latch claw 13, and is located at the bent portion of the rear end located between both inclined surfaces 16 and 17. A groove 18 for accommodating the band 48 is formed in the circumferential direction.

２０は継手内筒体６の外周面部に嵌合させた外
筒で、後部を継手後部体１の六角締付部３に突き
合わせて該内筒体６に装着したストツプリングを
介して回転自在に掛止されている。また外筒２０
の前部は後部よりも大径に形成して継手内筒体６
の外周面と外筒２０の内周面との間に環状空間２
２を設け、更に外筒２０の前端部には軸心線方向
に１条の切込溝２３を形成する。 Reference numeral 20 denotes an outer cylinder fitted onto the outer circumferential surface of the inner cylinder 6 of the joint, whose rear part abuts against the hexagonal tightening part 3 of the rear joint body 1, and is rotatably hung via a stop ring attached to the inner cylinder 6. It has been stopped. Also, the outer cylinder 20
The front part of the joint is formed to have a larger diameter than the rear part of the joint inner cylindrical body 6.
An annular space 2 is formed between the outer peripheral surface of the outer cylinder 20 and the inner peripheral surface of the outer cylinder 20.
2, and a single cut groove 23 is formed in the front end of the outer cylinder 20 in the axial direction.

２５は掛止爪１３の咬合部１４を遠心方向に変
位させたり、求心方向に変位させたりするための
スリーブで、スリーブ２５の後部が前記環状空間
２２に進入できるよう継手内筒体６の外周面部に
求心方向に摺動可能に装着されている。環状空間
２２内には、外筒２０の内周面に形成した段部２
１とスリーブ２５の後端面との間に第１圧縮ばね
２６を収容し、スリーブ２５を前方に向けて弾発
させる。スリーブ２５の前部内面には中心軸線方
向中央部分に中央部分を求心方向に突出させて形
成した第３押圧部３１と、その前後両側に第１押
圧部２７と第２押圧部２８を形成し、この３押圧
部によつて前記掛止爪１３を求心方向に押圧する
ことができるようにする。 Reference numeral 25 denotes a sleeve for displacing the engaging portion 14 of the latch claw 13 in the centrifugal direction or in the centripetal direction. It is attached to the surface so that it can slide in the centripetal direction. Inside the annular space 22, there is a stepped portion 2 formed on the inner peripheral surface of the outer cylinder 20.
A first compression spring 26 is housed between the first compression spring 26 and the rear end surface of the sleeve 25, and causes the sleeve 25 to spring forward. On the inner surface of the front part of the sleeve 25, a third pressing part 31 is formed in the central part in the central axis direction with the central part protruding in the centripetal direction, and a first pressing part 27 and a second pressing part 28 are formed on both the front and rear sides of the third pressing part 31. These three pressing portions allow the locking pawl 13 to be pressed in the centripetal direction.

第１押圧部２７に連続してスリーブ２５の後部
側には、掛止爪１３の後部片１５が進入できる空
間２９を円周方向に形成する。掛止爪１３の後部
片１５がスリーブ２５の空間２９にあるときは、
掛止爪１３の咬合部１４は求心方向に突出した姿
勢をとるよう擺動することができる。 Continuing from the first pressing portion 27, a space 29 is formed in the circumferential direction on the rear side of the sleeve 25 into which the rear piece 15 of the latching claw 13 can enter. When the rear piece 15 of the latch claw 13 is in the space 29 of the sleeve 25,
The engaging portion 14 of the latching claw 13 can be slid to assume a protruding posture in the centripetal direction.

３０はスリーブ２５の後部外面に形成した孔部
に係合させたボールで、ボール３０は自由状態で
は外筒２０の前端面部と掛合してスリーブ２５の
後退を阻止するが、ボール３０を外筒２０の前端
部１２に形成した切込部２３に合致させた時は、
スリーブ２５を圧縮ばね２６の弾発力に抗して後
退させることが出来るようになつている。 Reference numeral 30 denotes a ball that is engaged with a hole formed in the rear outer surface of the sleeve 25. In a free state, the ball 30 engages with the front end surface of the outer cylinder 20 to prevent the sleeve 25 from retreating. When aligned with the notch 23 formed on the front end 12 of 20,
The sleeve 25 can be moved backward against the elastic force of the compression spring 26.

３２は前部開口端部にシールリング４０を取付
けた摺動筒で、継手後部体１の螺条筒５と継手内
筒体６の内面部に嵌合した前筒体１２内に軸心線
方向に進退動可能に収容され、摺動筒３２の中央
部外周に突設した鍔部３３を前筒体１２の後端面
部に係止させることによつて、摺動筒３２が脱落
するのを防止している。 Reference numeral 32 denotes a sliding tube with a seal ring 40 attached to the front opening end, and an axial line is inserted into the front tube 12 fitted to the threaded tube 5 of the joint rear body 1 and the inner surface of the joint inner tube 6. The sliding tube 32 is housed so as to be movable forward and backward in the directions, and the flange 33 protruding from the outer periphery of the central portion of the sliding tube 32 is locked to the rear end surface of the front cylinder 12, thereby preventing the sliding tube 32 from falling off. is prevented.

３７は摺動筒３２内に軸心線方向に進退動可能
に収容したガイド筒で、ガイド筒３７の後部外面
に設けた係止段部３８を摺動筒３２の前端内周面
に円周方向に向けて凸部３５に係合させることに
よつてガイド筒３７が脱落するのを防止してい
る。 Reference numeral 37 denotes a guide tube that is housed in the sliding tube 32 so as to be movable forward and backward in the axial direction. By engaging the convex portion 35 in the direction, the guide tube 37 is prevented from falling off.

ガイド筒３７は継手後部体１の後端段部２ａに
掛止させた第２圧縮ばね３９の弾発力で前方に付
勢させてあり、ガイド筒３７の先端は自由状態で
は摺動筒３２の前端開口より外部に突出し、挿入
した管体４５の雄ねじ部４６の内部に進入させる
ようにし、雄ねじ部４６の先端部をシールリング
４０に正確に導くことができるようにすると共に
管体４５を摺動筒３２に対して合心状態に保持し
ている。 The guide tube 37 is biased forward by the elastic force of a second compression spring 39 hooked to the rear end step 2a of the joint rear body 1, and the tip of the guide tube 37 is in a free state when the sliding tube 32 It protrudes outside from the front end opening of the tube body 45 and enters into the inside of the male threaded portion 46 of the inserted tube body 45, so that the tip of the male threaded portion 46 can be accurately guided to the seal ring 40, and the tube body 45 is It is maintained in a concentric state with respect to the sliding tube 32.

尚、本実施例では通孔２は常時開口していて、
継手後部体１と摺動筒３２又はガイド筒３７のい
ずれにもバルブ装置（図示せず）が設けられてい
ないが、継手後部体１と摺動筒３２又はガイド筒
３７のいずれかにバルブ装置を装着することは可
能である。このようにバルブ装置を設けるによつ
て管体４５の接続、分離時に上記通孔２を自動的
に開閉することが可能である。 In this embodiment, the through hole 2 is always open,
Although a valve device (not shown) is not provided on either the joint rear body 1, the sliding tube 32, or the guide tube 37, a valve device (not shown) is provided on either the joint rear body 1, the sliding tube 32, or the guide tube 37. It is possible to install. By providing the valve device in this way, it is possible to automatically open and close the through hole 2 when the tube body 45 is connected or disconnected.

次に、本実施例の作用について説明する。 Next, the operation of this embodiment will be explained.

この管継手は自由状態では第１図に示す如く、
スリーブ２５が圧縮ばね２６の弾発力によつて前
進状態を維持し、スリーブ２５の第２押圧部２８
により各掛止爪１３の外周側傾斜面１７が押圧さ
れ、同爪１３の咬合部１４を求心方向に進出させ
て咬合部１４の内周面によつて形成する仮想円の
内径を狭めるもので、この状態では管体４５を接
続することができない。 In the free state, this pipe joint is as shown in Figure 1.
The sleeve 25 maintains the forward state due to the elastic force of the compression spring 26, and the second pressing portion 28 of the sleeve 25
The outer peripheral side inclined surface 17 of each latch claw 13 is pressed, and the occlusal part 14 of the latching claw 13 is advanced in the centripetal direction, thereby narrowing the inner diameter of the virtual circle formed by the inner peripheral surface of the latching part 14. , the pipe body 45 cannot be connected in this state.

次に、この管継手に管体４５を接続する場合に
は、第３図に示す如く先ず圧縮ばね２６の弾発力
に抗してスリーブ２５を矢印Ｘ方向に後退させ、
当該スリーブ２５の内周面側空間２９に位置した
掛止爪１３の後部片１５の外周面側傾斜面１６を
スリーブの第３押圧部３１によつて求心方向に押
下げ、各掛止爪１３の咬合部１４を遠心方向に持
ち上げて、該咬合部内周の前記仮想円の内径を拡
大させる。このようにスリーブ２５を後退させた
状態で、先端部に雄ねじ部４６を有する管体４５
を管継手の内部に回転させることなく挿入し、摺
動筒３２の先端に設けたシールリング３３に管体
４５の先端面を当接させる。更に、圧縮ばね３９
の弾発力に抗して管体４５を挿入すると摺動筒３
２が後退し、他方では管体の雄ねじ部４６にガイ
ド筒３７が進入する。摺動筒３２の後端面が継手
後部体１の前面段部２ａに当接すると、管体４５
はこれ以上挿入できなくなる。 Next, when connecting the pipe body 45 to this pipe joint, as shown in FIG. 3, the sleeve 25 is first retreated in the direction of arrow X against the elastic force of the compression spring 26.
The outer circumferential inclined surface 16 of the rear piece 15 of the latch claw 13 located in the inner circumferential space 29 of the sleeve 25 is pushed down in the centripetal direction by the third pressing part 31 of the sleeve, and each latch claw 13 The occlusal part 14 is lifted in the distal direction to enlarge the inner diameter of the virtual circle on the inner periphery of the occlusal part. With the sleeve 25 retracted in this manner, the tube body 45 having the male threaded portion 46 at the tip end
is inserted into the pipe joint without rotation, and the distal end surface of the tubular body 45 is brought into contact with the seal ring 33 provided at the distal end of the sliding tube 32. Furthermore, the compression spring 39
When the tube body 45 is inserted against the elastic force of the sliding tube 3
2 retreats, and on the other hand, the guide tube 37 enters the male threaded portion 46 of the tube body. When the rear end surface of the sliding tube 32 comes into contact with the front step portion 2a of the joint rear body 1, the tube body 45
can no longer be inserted.

管体４５の挿入が完了した後、先に後退させた
スリーブ２５から手を離すと、スリーブ２５は圧
縮ばね２６の弾発力により前進し、スリーブ２５
の第２押圧部２８で掛止爪１３外周傾斜面１７を
求心方向に押圧し、掛止爪１３の咬合部１４を雄
ねじ部４６に噛合させる。この場合、咬合部１４
と雄ねじ部４６との掛合が充分でない場合は、再
度スリーブ２５を圧縮ばね２６の弾発力に抗して
若干解放し、咬合部１４による掛合を若干緩めて
管体４５の雄ねじ部４６が確実に咬合部１４と掛
合するまで引いて、スリーブ２５から同様にして
手を離す。この操作によつて咬合部１４は雄ねじ
部４６に多段に噛合して接続状態を確実にする
（第４図）。 After the insertion of the tube body 45 is completed, when you release your hand from the previously retreated sleeve 25, the sleeve 25 moves forward due to the elastic force of the compression spring 26, and the sleeve 25
The second pressing portion 28 presses the outer circumferential inclined surface 17 of the latch claw 13 in the centripetal direction, causing the engagement portion 14 of the latch claw 13 to mesh with the male screw portion 46. In this case, the occlusal part 14
If the engagement with the male threaded portion 46 is not sufficient, the sleeve 25 is slightly released again against the elastic force of the compression spring 26, and the engagement by the occlusal portion 14 is slightly loosened to ensure that the male threaded portion 46 of the tube body 45 is securely engaged. Pull it until it engages with the occlusal part 14, and release your hand from the sleeve 25 in the same way. By this operation, the engaging portion 14 meshes with the male threaded portion 46 in multiple stages to ensure a secure connection (FIG. 4).

次に、スリーブ２５を円周方向に回動させる
と、スリーブ２５の外面部に設けたボール３０が
外筒２０の正面部と掛合するため、スリーブ２５
に後部方向に外力が加つてもスリーブ２５が動く
ことがないから、当該ロツク機構はその機能を不
変的に持続し、管体４５の接続状態の緩みを防止
するだけでなく、常に流体の洩れを防止する。 Next, when the sleeve 25 is rotated in the circumferential direction, the balls 30 provided on the outer surface of the sleeve 25 engage with the front surface of the outer cylinder 20, so that the sleeve 25
Since the sleeve 25 does not move even if an external force is applied in the rearward direction, the locking mechanism maintains its function and not only prevents the connection of the tube body 45 from loosening but also always prevents fluid from leaking. prevent.

管体４５を分離する場合は、スリーブ２５を円
周方向に回動させて、外筒２０の正面部に設けた
切込溝２３に向けてスリーブ２５に設けたボール
３０が進入できるようボール３０と切込溝２３と
を同一直線上に合致させる。ついで、スリーブ２
５を圧縮ばね２５の弾発力に抗して後退させる
と、スリーブ２５の内周面に形成した第３押圧部
３１が掛止爪１３の各後部片１５を求心方向に押
圧し、掛止爪１３の前部に設けた咬合部１４を擺
動運動により遠心方向に後退させて、管体４５の
雄ねじ部４６から離脱させる。この結果、管体４
５は圧縮ばね３９の弾発力により管継手の外に押
出されるので、管体４５は容易に分離することが
できる。 When separating the tube body 45, the sleeve 25 is rotated in the circumferential direction so that the ball 30 provided on the sleeve 25 can enter into the cut groove 23 provided on the front surface of the outer cylinder 20. and the cut groove 23 are aligned on the same straight line. Next, sleeve 2
5 is retreated against the elastic force of the compression spring 25, the third pressing portion 31 formed on the inner circumferential surface of the sleeve 25 presses each rear piece 15 of the latching pawl 13 in the centripetal direction, causing the latching The engaging part 14 provided at the front part of the claw 13 is moved back in the centrifugal direction by sliding movement, and is separated from the externally threaded part 46 of the tube body 45. As a result, the pipe body 4
5 is pushed out of the pipe joint by the elastic force of the compression spring 39, so the tube body 45 can be easily separated.

「考案の効果」 本考案は半径方向に擺動する複数の掛止爪を有
し、この掛止爪を継手内筒体の外周面部に設けた
スリーブを軸心線方向に進退動させることにより
半径方向に動かして咬合部の内径を拡大または縮
小させ、管体の雄ねじ部と噛合させたり、その噛
合を解除させることができるものであるから、噛
合状態における掛止爪の咬合部によつて管体は強
固な接続状態を維持し、妄りに緩むことがない。
従つて、使用中に気密が低下するおそれは全くな
い。その上、スリーブは単に継手主筒体の軸心線
方向に単に進退動させる形式のものであるから管
継手は外径が不必要に大きくなることがなく、小
径管体に対してはそれ相当の小径化が図れるもの
となるので、小型、軽量化に貢献し、取り扱いに
も便利であるという特長がある。``Effect of the invention'' The present invention has a plurality of latching claws that slide in the radial direction, and the latching claws are provided on the outer peripheral surface of the inner cylindrical body of the joint by moving the sleeve forward and backward in the axial direction. It is possible to expand or reduce the inner diameter of the occlusal part by moving the latching part in the latching state, and to engage or disengage the male threaded part of the tube body. The body maintains a strong connection and does not slacken involuntarily.
Therefore, there is no possibility that the airtightness will deteriorate during use. Furthermore, since the sleeve simply moves forward and backward in the axial direction of the main cylinder of the joint, the outside diameter of the pipe joint does not become unnecessarily large, and it is suitable for small-diameter pipes. Since it is possible to achieve a smaller diameter, it contributes to reduction in size and weight, and has the advantage of being convenient to handle.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の１実施例を示すもので、第１図
は継手主筒体の４半部の縦断側面図、第２図は第
1A−Ａ線上縦断正面図、第３図は管体を挿入し
た時の状態を示す縦断側面図、第４図は管体を完
全に接続した時の状態を示す４半部縦断面図、第
５図はスリーブの縦断側面図、第６図は継手内筒
体の正面図、第７図は第６図Ｂ−Ｂ線上縦断側面
図、第８図は４個の掛止爪を配列した状態を示す
正面図、第９図は第８図Ｃ−Ｃ線上縦断側面図で
ある。 １０……継手主筒体、１３……掛止爪、１４…
…咬合部、１５……後部片、１６……傾斜面、２
５……スリーブ、２６，３９……圧縮ばね、３１
……押圧部、３２……摺動筒、４０……シールリ
ング、４５……管体、４６……雄ねじ部、４８…
…スプリングバンド。 The drawings show one embodiment of the present invention; FIG. 1 is a vertical cross-sectional side view of four halves of the joint main cylinder, and FIG.
1A-A line vertical front view, Figure 3 is a vertical side view showing the state when the pipe body is inserted, Figure 4 is a quarter-half vertical cross-sectional view showing the state when the pipe body is completely connected, Figure 5 is a longitudinal side view of the sleeve, Figure 6 is a front view of the inner cylinder of the joint, Figure 7 is a vertical side view taken along line B-B in Figure 6, and Figure 8 is a state in which the four latching claws are arranged. FIG. 9 is a vertical sectional side view taken along the line CC in FIG. 8. 10... Joint main cylinder body, 13... Latching claw, 14...
... Occlusal part, 15 ... Posterior piece, 16 ... Inclined surface, 2
5... Sleeve, 26, 39... Compression spring, 31
... Pressing part, 32 ... Sliding tube, 40 ... Seal ring, 45 ... Pipe body, 46 ... Male thread part, 48 ...
...spring band.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 継手主筒体の正面部に、前部内面に管体の雄ね
じ部を噛合する雌ねじを持つ咬合部を有し、後部
内面に傾斜した後部片を有する複数の掛止爪を半
径方向に擺動可能に設け、各掛止爪の支点外周を
スプリングバンドで締着し、また、継手主筒体の
外周面部には前記掛止爪の後部片を求心方向に押
圧する押圧部を有するスリーブを後方から圧縮ば
ねで付勢させて摺動可能に装着すると共に、継手
主筒体の内部には、先端に前記雄ねじ部の端面を
密封するシールリングを有し、前記管体の端面で
押されて後退する摺動筒を圧縮ばねで付勢させて
摺動可能に収容した迅速管継手 The front surface of the main body of the joint has an engaging part with a female thread that engages the male thread of the tube on the inner surface of the front part, and multiple latch claws with an inclined rear piece on the inner surface of the rear part can be slid in the radial direction. The outer periphery of the fulcrum of each latch pawl is fastened with a spring band, and a sleeve having a pressing part that presses the rear piece of the latch pawl in the centripetal direction is attached to the outer peripheral surface of the joint main cylinder from the rear. It is attached so that it can slide by being biased by a compression spring, and has a seal ring at its tip that seals the end face of the male threaded part inside the joint main cylinder, and is pushed back by the end face of the pipe body. A quick fitting with a sliding tube biased by a compression spring and housed in a slidable manner.