JPH0534390U - Corrugated pipe insertion type pipe fitting - Google Patents

Corrugated pipe insertion type pipe fitting

Info

Publication number
JPH0534390U
JPH0534390U JP082947U JP8294791U JPH0534390U JP H0534390 U JPH0534390 U JP H0534390U JP 082947 U JP082947 U JP 082947U JP 8294791 U JP8294791 U JP 8294791U JP H0534390 U JPH0534390 U JP H0534390U
Authority
JP
Japan
Prior art keywords
coil cover
inlet side
joint body
corrugated pipe
joint
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
Application number
JP082947U
Other languages
Japanese (ja)
Other versions
JP2536369Y2 (en
Inventor
信一 鹿又
和明 森田
日出男 野崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Metals Ltd
Tokyo Gas Co Ltd
Original Assignee
Hitachi Metals Ltd
Tokyo Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Metals Ltd, Tokyo Gas Co Ltd filed Critical Hitachi Metals Ltd
Priority to JP1991082947U priority Critical patent/JP2536369Y2/en
Publication of JPH0534390U publication Critical patent/JPH0534390U/en
Application granted granted Critical
Publication of JP2536369Y2 publication Critical patent/JP2536369Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0036Joints for corrugated pipes
    • F16L25/0045Joints for corrugated pipes of the quick-acting type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0927Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

(57)【要約】 【目的】 波形管1の接続がワンタッチで行え、したが
って接続作業を短縮化することができる波形管用の管継
手を提供する。 【構成】 継手本体10の凹溝11にストップリング4
0を装着し、該ストップリングと係合する凹溝21を有
するリテーナ20を設け、継手本体の凸条13の奥側に
パッキン42を装着し、該パッキンの奥側に入口側コイ
ルカバー30を装着し、該入口側コイルカバーの外側に
奥側コイルカバー35を装着し、該奥側コイルカバー
と、入口側コイルカバーを係合溝と係合突起で連結し一
方のコイルカバーの外周面に設けた突起部の大径側への
突出を継手本体の係止溝15よりも入口側の内面16に
よって規制し、入口側コイルカバーの鍔32と奥側コイ
ルカバーの鍔37との間に内コイルスプリング46を圧
縮状態にて介在させ、奥側コイルカバーの鍔37と継手
本体の奥側の側面17との間に外コイルスプリング48
を圧縮状態にて介在させたことを特徴とする。
(57) [Abstract] [Purpose] To provide a pipe joint for a corrugated pipe, which enables the corrugated pipe 1 to be connected with one touch, and thus shortens the connection work. [Structure] The stop ring 4 is provided in the groove 11 of the joint body 10.
0, the retainer 20 having the concave groove 21 that engages with the stop ring is provided, the packing 42 is mounted on the inner side of the ridge 13 of the joint body, and the inlet side coil cover 30 is installed on the inner side of the packing. The inner side coil cover 35 is attached to the outer side of the inlet side coil cover, and the inner side coil cover and the inlet side coil cover are connected by an engaging groove and an engaging protrusion to the outer peripheral surface of one coil cover. The protrusion of the provided protrusion to the large diameter side is restricted by the inner surface 16 on the inlet side of the locking groove 15 of the joint body, and the protrusion is provided between the collar 32 of the inlet side coil cover and the collar 37 of the inner side coil cover. The coil spring 46 is interposed in a compressed state, and the outer coil spring 48 is provided between the collar 37 of the inner coil cover and the inner side surface 17 of the joint body.
Is interposed in a compressed state.

Description

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

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、外面が波形に形成された波形管用の管継手に関する。 The present invention relates to a pipe joint for a corrugated pipe whose outer surface is corrugated.

【0002】[0002]

【従来の技術】[Prior Art]

波形管用の管継手としては、例えば特開昭61−6491号公報に開示された ものがある。これは継手本体と、袋ナットと、内面を波形に形成したスリーブと を有する管継手であり、この管継手を用いて波形管を接続するには先ず袋ナット を波形管に挿通し、スリーブの円周上の切込みを開き、波形管の先端の波山を1 〜5山程度突出させてスリーブを波形管の波山に合わせて装着した後、スリーブ を継手本体内に挿入する。しかる後、袋ナットを継手本体のおねじに螺入して締 付けると、スリーブは継手本体の内径テーパ面によって縮径して波形管を保持し つつ継手本体の奥に進み、波形管の先端は継手本体の奥に形成した管受け壁部に 突き当たり、スリーブよりも先端の突出部がスリーブと管受け壁部との間で圧着 されてシール性を保ち接続されるものである。 As a pipe joint for a corrugated pipe, for example, there is one disclosed in Japanese Patent Laid-Open No. 61-6491. This is a pipe joint that has a joint body, a cap nut, and a sleeve whose inner surface is corrugated.To connect a corrugated pipe using this pipe joint, first insert the cap nut into the corrugated pipe and Open the notch on the circumference, project about 1 to 5 crests at the tip of the corrugated pipe, fit the sleeve to the corrugation of the corrugated pipe, and then insert the sleeve into the joint body. After that, when the cap nut is screwed into the male thread of the joint body and tightened, the sleeve is reduced in diameter by the inner diameter tapered surface of the joint body and advances to the inside of the joint body while holding the corrugated pipe, and the tip of the corrugated pipe is Is the one that abuts on the pipe receiving wall formed in the inner part of the joint body, and the protruding portion at the tip of the sleeve is crimped between the sleeve and the pipe receiving wall to maintain the sealing property.

【0003】 他の波形管用の管継手としては、実開平1−75691号公報に開示されたも のがある。このものは、筒状本体と、波形管の波形外面と係合する波形内面を有 し軸方向に3以上に分割されたチャックと、チャックを拡狭自在に支持し円筒本 体外周を移動できるスリーブとを有する管継手である。そして波形管を接続する に当たっては、先ずチャックを拡げて波形管を挿入し、スリーブを後端側へ移動 させることにより、チャックが筒状本体のチャック狭圧部に嵌合して求心方向に 狭まり、波形管外面と相似するチャック内面が波形管外面に係合圧着して波形管 を保持する。更にチャックに保持された波形管はスリーブと同方向に移動し、そ の先端が筒状本体の内部に設けた金属シール部に圧着し、接続されるものである 。Another pipe joint for corrugated pipes is disclosed in Japanese Utility Model Laid-Open No. 1-75691. This one has a tubular body, a zipper having an inner corrugated surface that engages with the outer corrugated surface of the corrugated tube, and is divided into three or more parts in the axial direction. And a sleeve having a sleeve. When connecting the corrugated pipe, first expand the chuck, insert the corrugated pipe, and move the sleeve to the rear end side, so that the chuck fits into the chuck narrowing portion of the tubular body and narrows in the centripetal direction. The inner surface of the chuck, which is similar to the outer surface of the corrugated tube, engages and crimps the outer surface of the corrugated tube to hold the corrugated tube. Further, the corrugated tube held by the chuck moves in the same direction as the sleeve, and its tip is crimped and connected to the metal seal portion provided inside the cylindrical main body.

【0004】[0004]

【考案が解決しようとする課題】 上記従来の管継手のうち特開昭61−6491号公報に開示されたものは、袋 ナットの波形管への挿通、スリーブの波形管への装着、波形管を把持したスリー ブの継手本体内への挿入、及び袋ナットの締付けと各種の作業を必要とし、すな わち作業性が必ずしも良好とはいえなかった。実開平1−75691号公報に開 示されたものも同様に、作業性が必ずしも良好とはいえなかった。したがって本 考案は、作業性を改良した波形管用の管継手を提供することを目的とする。Among the above conventional pipe joints, the one disclosed in Japanese Patent Laid-Open No. 61-6491 discloses that a cap nut is inserted into a corrugated pipe, a sleeve is attached to the corrugated pipe, and a corrugated pipe is mounted. It was necessary to insert the sleeve holding the sleeve into the joint body, tighten the cap nut, and perform various other tasks, which meant that workability was not always satisfactory. Similarly, the work disclosed in Japanese Utility Model Laid-Open No. 1-75691 was not always good in workability. Therefore, an object of the present invention is to provide a pipe joint for a corrugated pipe with improved workability.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

本考案は、内周面の入口側より奥に向かって凹溝と、凸条と、係止溝とをその 順に形成した継手本体と、継手本体の前記凹溝に装着され、半径方向に拡縮可能 なストップリングと、接続しようとする波形管の外面形状と係合する内面形状を 有し、外周面に前記ストップリングと係合する凹溝を有し、軸線方向に切り割り を設けたリテーナと、継手本体の前記凸条の奥側に装着したパッキンと、外面に 係合溝又は係合突起を有し、入口側内方に前記パッキンを押圧する鍔を突設した 入口側コイルカバーと、前記入口側コイルカバーの外側に装着され、前記入口側 コイルカバーの係合溝又は係合突起と嵌合する係合突起又は係合溝を有し、奥側 内方に前記波形管の前面と係合する鍔を突設した奥側コイルカバーと、奥側コイ ルカバーの外面に形成され、大径側への突出を継手本体の前記係止溝よりも入口 側の内面によって規制された突起部と、入口側コイルカバーと奥側コイルカバー との前記両鍔の間に圧縮状態にて介在させた内コイルスプリングとを有する波形 管差込式管継手によって、上記目的を達成したものである。 The present invention is directed to a joint body in which a concave groove, a ridge, and a locking groove are formed in this order from the inlet side of the inner peripheral surface to the inner side, and the joint body is mounted in the concave groove to expand and contract in the radial direction. A retainer that has a possible stop ring and an inner surface shape that engages with the outer surface shape of the corrugated pipe to be connected, has a groove that engages with the stop ring on the outer peripheral surface, and has a slit in the axial direction. A packing attached to the inner side of the ridge of the joint body, an inlet side coil cover having an engaging groove or engaging protrusion on the outer surface, and a flange for pressing the packing inwardly of the inlet side, It is mounted on the outside of the inlet side coil cover and has an engaging protrusion or an engaging groove that fits with an engaging groove or an engaging protrusion of the inlet side coil cover, and the front side of the corrugated pipe is on the inner side on the back side. Outer surface of the back side coil cover and the back side coil cover with protruding flanges to engage A projection that is formed and whose protrusion toward the large diameter side is restricted by the inner surface of the joint body on the inlet side of the locking groove, and the flanges on the inlet side coil cover and the rear side coil cover are in a compressed state. The above object is achieved by the corrugated pipe plug-in type pipe joint having the inner coil spring interposed in.

【0006】 但し前記入口側コイルカバーと、奥側コイルカバーに代えて、外面に係合溝又 は係合突起を有し、奥側内方に前記波形管の前面と係合する鍔を突設した奥側コ イルカバーと、前記奥側コイルカバーの外側に装着され内面に前記奥側コイルカ バーの係合溝又は係合突起と嵌合する係合突起又は係合溝を有し、入口側内方に 前記パッキンを押圧する鍔を突設した入口側コイルカバーと、入口側コイルカバ ーの外面に形成され、大径側への突出を継手本体の前記係止溝よりも入口側の内 面によって規制された突起部とを用いることもできる。また、奥側コイルカバー の鍔と継手本体の奥側端面との間に圧縮状態にて外コイルスプリングを介在させ ることもできる。However, instead of the inlet side coil cover and the inner side coil cover, an engaging groove or an engaging protrusion is provided on the outer surface, and a collar that engages with the front surface of the corrugated pipe is protruded inwardly on the inner side. The rear side coil cover is provided, and the inner side is provided with an engaging protrusion or an engaging groove that is fitted on the outer side of the rear side coil cover and that engages with the engaging groove or the engaging protrusion of the rear side coil cover. An inlet side coil cover that projects a collar that presses the packing inward and an outside surface of the inlet side coil cover, and a protrusion toward the large diameter side is formed on the inside surface of the joint body that is closer to the inlet side than the locking groove. It is also possible to use a projection portion regulated by. Also, an outer coil spring may be interposed in a compressed state between the collar of the inner coil cover and the end surface of the joint body.

【0007】[0007]

【作用】[Action]

本願考案は上記の構成であるから、両コイルカバーの間に介在する内コイルス プリングによって、両コイルカバーは互いに軸線方向に離隔しようとしており、 したがって相方のコイルカバーに設けた係合溝又は係合突起同志が嵌合し合って 軸線方向に押圧すると同時に、一方のコイルカバーを縮径状態で装置して突起部 が小径側の周面を径方向に押圧しており、この結果突起部は大径側に突出しよう としており、この突出は継手本体の係止溝よりも入口側の内面によって規制され ている。したがって両コイルカバーと内コイルスプリングとは軸線方向にはフリ ーの状態にある。ここで、奥側コイルカバーと継手本体の奥側端面との間に外コ イルスプリングを介在させれば、上記両コイルカバーと内コイルスプリングを確 実に入口側に移動した状態に保つことができる。 Since the invention of the present application has the above-described structure, the inner coil springs interposed between the coil covers are trying to separate the coil covers from each other in the axial direction. At the same time as the protrusions fit together and press in the axial direction, one of the coil covers is installed in a reduced diameter state, and the protrusion presses the peripheral surface on the small diameter side in the radial direction, resulting in a large protrusion. It is about to project to the radial side, and this projection is restricted by the inner surface on the inlet side of the locking groove of the joint body. Therefore, both coil covers and the inner coil spring are free in the axial direction. Here, by interposing an outer coil spring between the inner coil cover and the inner end surface of the joint body, both coil covers and the inner coil spring can be surely kept in the state of being moved to the inlet side. ..

【0008】 しかしてリテーナの切割りを開き、接続しようとする波形管の先端を突出させ てリテーナを波形管の波山に合わせて装着し、波形管を把持したリテーナを継手 本体内に差し込むと、スットプリングは拡径してリテーナの進入を許容し、リテ ーナ外面の凹溝に至って縮径してその位置にてリテーナをロックする。他方波形 管の前面は、外コイルスプリングに抗して奥側コイルカバーの鍔を奥側に押圧し 、したがって前記コイルカバー部分は全体として奥側に移動し、突起部が継手本 体の係止溝に至ったときに突起部は大径側に突出し、内コイルスプリングによっ て両コイルカバーは互い軸線方向に離隔して入口側コイルカバーはパッキンを押 圧し、パッキンは入口側コイルカバーを介して内コイルスプリングによって常に 押圧されて径方向に膨出し、波形管の山部外面と継手本体の内面との間を常にシ ールする。Then, the slit of the retainer is opened, the tip of the corrugated pipe to be connected is projected, the retainer is fitted to the wave peak of the corrugated pipe, and the retainer holding the corrugated pipe is inserted into the main body of the joint. The stop ring expands its diameter to allow the retainer to enter, and reaches the concave groove on the outer surface of the retainer to reduce its diameter and lock the retainer at that position. On the other hand, the front surface of the corrugated pipe pushes the flange of the back side coil cover against the outer coil spring, so that the coil cover part moves to the back side as a whole, and the protrusions lock the joint body. When reaching the groove, the protrusion protrudes toward the large diameter side, and the inner coil spring separates the coil covers from each other in the axial direction so that the inlet side coil cover presses the packing and the packing passes through the inlet side coil cover. The inner coil spring constantly presses and swells in the radial direction to constantly seal between the outer surface of the ridge of the corrugated pipe and the inner surface of the joint body.

【0009】 その際、継手本体の凹溝の入口側内壁面を入口側に向って縮径して形成したと きには、接続後に波形管に引抜き作用が生じると、リテーナと共にストップリグ も引き抜き方向に移動するが、ストプリングは凹溝の縮径面によって縮径作用を 受けてリテーナを強く把持するから、引抜き阻止力が一層確実に発揮される。ま た継手本体の凸条の奥側壁面を入口側に向かって縮径して形成したときには、パ ッキンは内コイルスプリングによる押圧によって膨出するほか、継手本体の入口 側への移動によって縮径するから、波形管の山部外面と継手本体の内面との間が 一層確実にシールされる。At that time, when the inlet-side inner wall surface of the recessed groove of the joint body is formed by reducing the diameter toward the inlet side, if the corrugated pipe is pulled out after the connection, the retainer and the stop rig are also pulled out. Although the stopper moves in the direction, the stop ring receives a diameter reducing action by the diameter reducing surface of the concave groove and strongly grips the retainer, so that the pullout preventing force is exerted more reliably. When the inner side wall surface of the ridge of the joint body is reduced in diameter toward the inlet side, the packing swells due to the pressing force of the inner coil spring, and the diameter decreases when the joint body moves toward the inlet side. Therefore, the outer surface of the corrugated pipe and the inner surface of the joint body are more reliably sealed.

【0010】[0010]

【実施例】【Example】

本考案の実行例を図面によって説明する。図1は本考案の一実施例の波形管接 続前を示す上半断面下半正面図であり、図3は同実施例の波形管接続後を示す。 この実施例の波形管差込式管継手は、継手本体10と、継手部材17と、Oリン グ18と、リテーナ20と、入口側コイルカバー30と、奥側コイルカバー35 と、ストップリング40と、パッキン42と、突起部44と、内コイルスプリン グ46と、外コイルスプリング48とからなる。 An execution example of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a lower half of an upper half section showing a corrugated pipe according to an embodiment of the present invention before connection, and FIG. 3 shows a corrugated pipe after connection of the same embodiment. The corrugated pipe plug-in type pipe joint of this embodiment includes a joint body 10, a joint member 17, an O ring 18, a retainer 20, an inlet side coil cover 30, a back side coil cover 35, and a stop ring 40. A packing 42, a protrusion 44, an inner coil spring 46, and an outer coil spring 48.

【0011】 先ず継手本体10は六角円筒状に形成され、内周面の入口側(図面右側)より 奥側(図面左側)に向って周方向の凹溝11と、周方向の凸条13と、周方向の 係止溝15とがその順に形成されている。凹溝11の入口側内壁面は、入口側に 向って縮径する傾斜面12に形成されており、本実施例ではこの傾斜面12の傾 斜角度は45゜に形成されている。また凸条13の奥側壁面も、入口側に向って 縮径する傾斜面14に形成されている。係止溝15の入口側は、円筒内周面16 に形成されており、継手本体10の入口側と反対側には管用テーパおねじを刻設 した継手部材17が、Oリング18を介してシール性を持って螺着されている。 なお、継手部材17は組立を容易にするために別体としたが必ずしも別体で構成 する必要はなく、継手本体10を一体的に構成してもよい。First, the joint body 10 is formed in a hexagonal cylindrical shape, and has a concave groove 11 in the circumferential direction and a convex strip 13 in the circumferential direction from the inlet side (right side in the drawing) of the inner peripheral surface toward the rear side (left side in the drawing). , A circumferential engaging groove 15 is formed in that order. The inner wall surface on the inlet side of the concave groove 11 is formed as an inclined surface 12 whose diameter is reduced toward the inlet side. In this embodiment, the inclination angle of the inclined surface 12 is 45 °. The inner side wall surface of the ridge 13 is also formed as an inclined surface 14 whose diameter decreases toward the inlet side. An inlet side of the locking groove 15 is formed on the inner peripheral surface 16 of the cylinder, and a joint member 17 having a tapered male screw for a pipe is formed on the side opposite to the inlet side of the joint body 10 via an O-ring 18. It is screwed with a sealing property. Although the joint member 17 is a separate body for facilitating the assembly, it is not always necessary to form a separate body, and the joint body 10 may be integrally formed.

【0012】 ストップリング40は、金属コイルを円環状に形成し、すなわち金属線をドー ナツの外周に巻回した形状に形成して拡縮自在に構成されたいわゆるガーターコ イルによって形成されており、継手本体の凹溝11内に装着されている。但しス トップリング40は、皿バネ形状等ほかの公知の抜け止め機構とすることもでき る。The stop ring 40 is formed by a so-called garter coil that is formed by forming a metal coil in an annular shape, that is, by forming a metal wire around an outer circumference of a donut and is configured to be expandable and contractible. It is mounted in the groove 11 of the main body. However, the stop ring 40 may be a known retaining mechanism other than a disc spring shape or the like.

【0013】 リテーナ20の外周面にはストップリング40が嵌合する凹溝21が形成され ており、リテーナ20の前端(図面左端)外周面は、該前端側に向って縮径する テーパ面22に形成されている。他方リテーナ20の内周面は、波形管1の波形 外面に係合する波形内面23に形成されている。またリテーナ20は図2に示す ように、軸線方向の切割り24によって軸線方向に開くことができるように構成 されている。すなわちこの切割り24は、2ケ所以上に設けて完全に2分割ない しは多分割できるようにすることもできるし、あるいは図2に示すように1ケ所 にのみ切割り24を設け、これと例えば180゜隔てた部分には薄肉部25を設 けて、軸線方向に開けられるようにすることもできる。 パッキン42はゴムによって形成されており、接続すべき波形管1の波形外面 の山部外径とほぼ等しい内径を有し、継手本体の凸条13の奥側に装着されてい る。A concave groove 21 into which the stop ring 40 is fitted is formed on the outer peripheral surface of the retainer 20, and the outer peripheral surface of the front end (left end in the drawing) of the retainer 20 is a tapered surface 22 whose diameter decreases toward the front end side. Is formed in. On the other hand, the inner peripheral surface of the retainer 20 is formed as a corrugated inner surface 23 that engages with the corrugated outer surface of the corrugated tube 1. Further, as shown in FIG. 2, the retainer 20 is configured so that it can be opened in the axial direction by a slit 24 in the axial direction. That is, the slit 24 can be provided at two or more places so that the slit 24 can be completely divided into two or can be divided into multiple parts, or as shown in FIG. For example, a thin portion 25 may be provided at a portion separated by 180 ° so that it can be opened in the axial direction. The packing 42 is made of rubber, has an inner diameter substantially equal to the outer diameter of the peak portion of the corrugated outer surface of the corrugated pipe 1 to be connected, and is mounted on the inner side of the ridge 13 of the joint body.

【0014】 入口側コイルカバー30は全体として円筒状に形成され、周方向外面に係合用 の凹溝部31が形成されている。入口側コイルカバー30の入口側には内方に突 出する鍔32が形成されており、該鍔32の入口側端面はパッキン42の奥側端 面と当接している。奥側コイルカバー35も全体として円筒上に形成され、入口 側コイルカバー30の外側に装着されており、内面周方向に前記入口側コイルカ バーの凹溝31に係合する突起36が形成されている。奥側コイルカバー35の 奥側には内方に突出する鍔37が形成されており、該鍔37は波形管1の前面と 係合できる内径を有している。The inlet side coil cover 30 is formed in a cylindrical shape as a whole, and a concave groove portion 31 for engagement is formed on the outer circumferential surface thereof. A collar 32 protruding inward is formed on the inlet side of the inlet side coil cover 30, and an inlet side end surface of the collar 32 is in contact with a back side end surface of the packing 42. The back side coil cover 35 is also formed as a whole in a cylindrical shape and is attached to the outside of the inlet side coil cover 30, and has a protrusion 36 formed in the inner circumferential direction to engage with the concave groove 31 of the inlet side coil cover. There is. A collar 37 protruding inward is formed on the inner side of the inner coil cover 35, and the collar 37 has an inner diameter capable of engaging with the front surface of the corrugated tube 1.

【0015】 奥側コイルカバーの外周面に形成された突起部44は、大径側への突出は継手 本体の係止溝15よりも入口側の円筒内周面16によって規制されている。また 入口側コイルカバーと奥側コイルカバーとの両鍔32,37の間には、内コイル スプリング46が圧縮状態にて介在しており、奥側コイルカバーの鍔37と継手 部材17の入口側端面との間には、外コイルスプリング48が圧縮状態にて介在 している。外コイルスプリング48は、両コイルカバー30,35と内コイルス プリング46とを入口側に移動した状態に保持するものであり、比較的弱いもの であってよい。また、場合によっては設けなくてもよい。これに対して内コイル スプリング46は、パッキン42を押圧して膨出させるものであるから、比較的 強いものを用いる。The protrusion 44 formed on the outer peripheral surface of the inner coil cover is restricted from protruding toward the large diameter side by the cylindrical inner peripheral surface 16 on the inlet side of the locking groove 15 of the joint body. Further, an inner coil spring 46 is interposed in a compressed state between the collars 32 and 37 of the inlet side coil cover and the inner side coil cover, and the collar 37 of the inner side coil cover and the inlet side of the joint member 17 are provided. An outer coil spring 48 is interposed between the end surface and the end surface in a compressed state. The outer coil spring 48 holds both of the coil covers 30 and 35 and the inner coil spring 46 in a state of being moved toward the inlet side, and may be relatively weak. It may not be provided depending on the case. On the other hand, since the inner coil spring 46 presses the packing 42 to swell it, a relatively strong one is used.

【0016】 本実施例は以上のように構成されており、両コイルカバー30,35の間に介 在する内コイルスプリング46によって、両コイルカバー30,35は互いに軸 線方向に離隔しようとしており、また、縮径状態でコイルカバーを装着するので 奥側コイルカバーに設けた突起部44は大径側に突出しようとしており、この突 出は継手本体の係止溝よりも入口側の円筒内周面16によって規制されている。 したがって両コイルカバー30,35と内コイルスプリング46とは、軸線方向 にはフリーの状態にあり、この結果これらは、奥側コイルカバー35と継手部材 17との間に介在する外コイルスプリング48によって、全体として入口側に移 動した状態を保っている。The present embodiment is configured as described above, and the inner coil springs 46 interposed between the coil covers 30 and 35 attempt to separate the coil covers 30 and 35 from each other in the axial direction. Also, since the coil cover is mounted in a reduced diameter state, the protrusion 44 provided on the back side coil cover is about to protrude toward the large diameter side, and this protrusion is inside the cylinder on the inlet side of the locking groove of the joint body. It is regulated by the peripheral surface 16. Therefore, the coil covers 30 and 35 and the inner coil spring 46 are in a free state in the axial direction, and as a result, they are prevented by the outer coil spring 48 interposed between the inner coil cover 35 and the joint member 17. , As a whole, it keeps moving to the entrance side.

【0017】 しかして波形管1を覆う樹脂被覆部2を一定長さ取除き、リテーナ20の切割 り24を開き、波形管1の先端を突出させてリテーナ20を波形管1の波山に合 わせて装着し、波形管1を把持したリテーナ20を継手本体10内に差し込むと 、ストップリング40はリテーナ外面のテーパ面22によって除々に拡径してリ テーナ20の進入を許容し、リテーナ外面の凹溝21に至って縮径し、図3に示 すようにその位置にてリテーナ20をロックする。Then, the resin coating portion 2 covering the corrugated pipe 1 is removed by a certain length, the notch 24 of the retainer 20 is opened, and the tip of the corrugated pipe 1 is projected to fit the retainer 20 to the wave peak of the corrugated pipe 1. When the retainer 20 holding the corrugated pipe 1 is inserted into the joint body 10, the stop ring 40 gradually expands in diameter by the tapered surface 22 on the outer surface of the retainer to allow the retainer 20 to enter, and the outer surface of the retainer 20 to be inserted. The diameter is reduced to reach the groove 21, and the retainer 20 is locked at that position as shown in FIG.

【0018】 他方波形管1の前面は、外コイルスプリング48に抗して奥側コイルカバーの 鍔37を奥側に押圧し、したがって両コイルカバー30,35と内コイルスプリ ング46とは全体として奥側に移動し、突起部44が継手本体の係止溝15に至 ったときに突起部44は大径側に突出し、内コイルスプリング46によって両コ イルカバー30,35は互いに軸線方向に離隔して入口側コイルカバー30はパ ッキン42を押圧し、パッキン42は入口側コイルカバー30を介して内コイル スプリング46によって常に押圧されて径方向に膨出し、波形管1の山部外面と 継手本体10の内面との間を常にシールする。On the other hand, the front surface of the corrugated tube 1 pushes the flange 37 of the inner coil cover toward the inner side against the outer coil spring 48, so that the coil covers 30, 35 and the inner coil spring 46 as a whole are arranged in the inner portion. When the projection 44 moves to the side and reaches the locking groove 15 of the joint body, the projection 44 projects to the large diameter side, and the inner coil springs 46 separate the coil covers 30 and 35 from each other in the axial direction. The inlet side coil cover 30 presses the packing 42, and the packing 42 is constantly pressed by the inner coil spring 46 via the inlet side coil cover 30 and bulges in the radial direction, and the outer surface of the corrugated pipe 1 and the joint body. Always seal with the inner surface of 10.

【0019】 また本実施例では継手本体の凹溝11の入口側内壁面を傾斜面12に形成して いるから、接続後に波形管1に引抜き作用が生じると、リテーナ20と共にスト ップリング40も引抜き方向に移動するが、ストップリング40は凹溝の傾斜面 12によって縮径作用を受けてリテーナ20を強く把持するから、引抜き阻止力 が一層確実に発揮される。他方傾斜面12を形成しないときには、引抜きに対す る阻止力を確保するために、リテーナの凹溝21の深さを少なくともストップリ ング40の巻回半径よりも深く形成することが好ましい。Further, in this embodiment, since the inlet side inner wall surface of the concave groove 11 of the joint body is formed as the inclined surface 12, when the corrugated pipe 1 is pulled out after the connection, the retainer 20 and the stop ring 40 are also pulled out. Although the stopper ring 40 moves in the direction, the stopper ring 40 receives the diameter reduction effect of the inclined surface 12 of the concave groove and strongly grips the retainer 20, so that the pullout preventing force is exerted more reliably. On the other hand, when the inclined surface 12 is not formed, it is preferable to form the recessed groove 21 of the retainer at least deeper than the winding radius of the stop ring 40 in order to secure a blocking force against pulling out.

【0020】 また本実施例では継手本体の凸条の奥側壁面も傾斜面14に形成しているから 、パッキン42は内コイルスプリング46による押圧によって膨出するほか、継 手本体10の入口側への移動により傾斜面14によって縮径作用を受けて縮径す るから、波形管1の山部外面と継手本体10の内面との間が一層確実にシールさ れる。Further, in this embodiment, since the inner side wall surface of the ridge of the joint body is also formed on the inclined surface 14, the packing 42 swells when pressed by the inner coil spring 46, and the inlet side of the joint body 10 When the slanted surface 14 is moved, the slanted surface 14 reduces the diameter of the corrugated tube 1 so that the outer surface of the corrugated tube 1 and the inner surface of the joint body 10 are more reliably sealed.

【0021】 上記実施例では奥側コイルカバー35は入口側コイルカバー30の外側に装着 されていたが、別の実施例として、入口側コイルカバーを奥側コイルカバーの外 側に装着し、このように構成しても上記実施例と同様の作用・効果を得ることが できる。 なおストップリング40は、リテーナ20の進入に対してはこれを許容し、リ テーナ20の引抜きに対してはこれを阻止する必要があるが、そのためには、継 手本体の凹溝11の入口側内壁面を傾斜面12に形成するか、リテーナの前端外 周面をテーパ面22に形成するか、あるいはストップリング40自体を例えば図 4図示のように皿バネ形状に形成するかの、いずれかを用いればよい。In the above embodiment, the back side coil cover 35 is mounted on the outside of the entrance side coil cover 30, but as another embodiment, the entrance side coil cover is mounted on the outside of the back side coil cover, and Even with such a configuration, it is possible to obtain the same operation and effect as in the above embodiment. The stop ring 40 must allow the retainer 20 to enter and prevent the retainer 20 from pulling out. For that purpose, the inlet of the groove 11 of the joint body is required. Either the side inner wall surface is formed on the inclined surface 12, the front end outer peripheral surface of the retainer is formed on the tapered surface 22, or the stop ring 40 itself is formed in a disc spring shape as shown in FIG. 4, for example. You can use or.

【0022】 上記実施例では、ストップリング40として金属コイルを円環状に形成したガ ーターコイルを使用しているが、継手本体に傾斜面12を形成しているから、リ テーナのテーパ面22は必ずしも必要ではない。また図4図示の皿バネ形状のス トップリング40を用いるときには、継手本体の傾斜面12もリテーナのテーパ 面22も必ずしも設ける必要はない。In the above embodiment, a garter coil in which a metal coil is formed in an annular shape is used as the stop ring 40. However, since the inclined surface 12 is formed in the joint body, the tapered surface 22 of the retainer is not always necessary. Not necessary. Further, when the disc spring-shaped stop ring 40 shown in FIG. 4 is used, it is not always necessary to provide the inclined surface 12 of the joint body and the tapered surface 22 of the retainer.

【0023】[0023]

【考案の効果】[Effect of the device]

本考案によって波形菅の接続がワンタッチで行え、したがって熟練を要せず、 接続作業を短縮化することができる波形管用の管継手が提供された。 The present invention provides a pipe joint for a corrugated pipe, which allows one-touch connection of the corrugated pipe, and therefore requires no skill and shortens the connecting work.

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

【図1】本考案の一実施例の管接続前を示す上半断面下
半正面図
FIG. 1 is a front view of a lower half of an upper half section showing a pipe before connection according to an embodiment of the present invention.

【図2】該実施例のリテーナの切割りを示す図1中A−
A断面図
FIG. 2 is a sectional view taken along line A- in FIG.
Section A

【図3】該実施例の接続完了時を示す要部上半断面図FIG. 3 is an upper half cross-sectional view of an essential part showing a completed connection of the embodiment.

【図4】ストップリングの別の実施例を示す斜視図FIG. 4 is a perspective view showing another embodiment of the stop ring.

【符号の説明】[Explanation of symbols]

1…波形管 2…樹脂披覆部
10…継手本体 11…凹溝 12…傾斜面
13…凸条 14…傾斜面 15…係止溝
16…円筒内周面 17…継手部材 18…Oリング 20…リテーナ 21…凹溝
22…テーパ面 23…波形内面 24…切割り
25…薄肉部 30…入口側コイルカバー 31…凹溝
32…鍔 35…奥側コイルカバー 36…突起
37…鍔 40…ストップリング 42…パッキン
44…突起部 46…内コイルスプリング 48…外コイルスプリング
1 ... Corrugated tube 2 ... Resin cover
10 ... Joint body 11 ... Recessed groove 12 ... Sloping surface
13 ... ridge 14 ... inclined surface 15 ... locking groove
16 ... Cylindrical inner peripheral surface 17 ... Joint member 18 ... O-ring 20 ... Retainer 21 ... Recessed groove
22 ... tapered surface 23 ... corrugated inner surface 24 ... cutting
25 ... Thin portion 30 ... Inlet side coil cover 31 ... Recessed groove
32 ... Tsuba 35 ... Back side coil cover 36 ... Protrusion
37 ... Tsuba 40 ... Stop ring 42 ... Packing
44 ... Projection 46 ... Inner coil spring 48 ... Outer coil spring

フロントページの続き (72)考案者 野崎 日出男 三重県桑名市大福2番地 日立金属株式会 社桑名工場内Continued Front Page (72) Hideo Nozaki, Creator Hideo Nozaki, Daifuku, No.2, Daifuku, Kuwana City, Mie Prefecture Inside the Kuwana Plant of Hitachi Metals Ltd.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 内周面の入口側より奥に向って凹溝と、
凸条と、係止溝とをその順に形成した継手本体と、 継手本体の前記凹溝に装着され、半径方向に拡縮可能な
ストップリングと、 接続しようとする波形管の外面形状と係合する内面形状
を有し、外周面に前記ストップリングと係合する凹溝を
有し、軸線方向に切り割りを設けたリテーナと、継手本
体の前記凸条の奥側に装着したパッキンと、 外面あるいは内面に係合溝又は係合突起を有し、入口側
内方に前記パッキンを押圧する鍔を突設した入口側コイ
ルカバーと、 前記入口側コイルカバーの外側あるいは内側に嵌着さ
れ、前記入口側コイルカバーの係合溝又は係合突起と嵌
合する係合突起又は係合溝を有し、奥側内方に前記波形
管の前面と係合する鍔を突設した奥側コイルカバーと外
側に位置するいずれか一方のコイルカバーの外面に形成
され、継手本体の前記係止溝よりも入口側の内面によっ
て大径側への突出を規制された突起部と、 入口側コイルカバーと奥側コイルカバーとの前記両鍔の
間に圧縮状態にて介在させた内コイルスプリングと、 を有する波形管差込式管継手。
1. A concave groove extending from the inlet side of the inner peripheral surface toward the back,
A joint main body in which a ridge and a locking groove are formed in that order, a stop ring that is mounted in the concave groove of the joint main body and is expandable and contractible in the radial direction, and engages with the outer surface shape of the corrugated pipe to be connected. A retainer that has an inner surface shape, has a groove on the outer peripheral surface that engages with the stop ring, and is provided with slits in the axial direction; a packing that is attached to the inner side of the ridge of the joint body; and an outer surface or an inner surface. An inlet side coil cover having an engaging groove or an engaging protrusion on the inlet side, and a flange that presses the packing inwardly of the inlet side, and an inlet side coil cover that is fitted to the outside or inside of the inlet side coil cover. An inner side coil cover and an outer side having engaging protrusions or engaging grooves that engage with the engaging grooves or engaging protrusions of the coil cover, and projecting a collar that engages with the front surface of the corrugated tube on the inner side on the inner side. Formed on the outer surface of one of the coil covers located at The inner surface of the joint body on the inlet side of the locking groove restricts the protrusion toward the large diameter side, and the flange between the inlet side coil cover and the rear side coil cover is compressed. Corrugated pipe insertion type pipe joint having an inner coil spring interposed therebetween.
【請求項2】奥側コイルカバーの前記鍔と前記継手本体
の奥側端面との間に圧縮状態にて介在させた外コイルス
プリングとを有する。請求項1又は2記載の波形管差込
式管継手。
2. An outer coil spring interposed in a compressed state between the flange of the inner coil cover and the end surface of the joint body. The corrugated pipe insertion type pipe joint according to claim 1.
JP1991082947U 1991-10-14 1991-10-14 Corrugated pipe insertion type pipe fitting Expired - Lifetime JP2536369Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991082947U JP2536369Y2 (en) 1991-10-14 1991-10-14 Corrugated pipe insertion type pipe fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991082947U JP2536369Y2 (en) 1991-10-14 1991-10-14 Corrugated pipe insertion type pipe fitting

Publications (2)

Publication Number Publication Date
JPH0534390U true JPH0534390U (en) 1993-05-07
JP2536369Y2 JP2536369Y2 (en) 1997-05-21

Family

ID=13788416

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2536369Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001165374A (en) * 1999-12-03 2001-06-22 Tokyo Gas Co Ltd Corrugated tube joint
JP2001182879A (en) * 1999-12-28 2001-07-06 Tokyo Gas Co Ltd Corrugated tube coupling
WO2005106311A1 (en) * 2004-04-28 2005-11-10 Tabuchi Co. Ltd. Snap joint for resin pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001165374A (en) * 1999-12-03 2001-06-22 Tokyo Gas Co Ltd Corrugated tube joint
JP4523687B2 (en) * 1999-12-03 2010-08-11 東京瓦斯株式会社 Corrugated fitting
JP2001182879A (en) * 1999-12-28 2001-07-06 Tokyo Gas Co Ltd Corrugated tube coupling
WO2005106311A1 (en) * 2004-04-28 2005-11-10 Tabuchi Co. Ltd. Snap joint for resin pipe

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