JPH09178067A - Seal construction for tube joint - Google Patents
Seal construction for tube jointInfo
- Publication number
- JPH09178067A JPH09178067A JP33731495A JP33731495A JPH09178067A JP H09178067 A JPH09178067 A JP H09178067A JP 33731495 A JP33731495 A JP 33731495A JP 33731495 A JP33731495 A JP 33731495A JP H09178067 A JPH09178067 A JP H09178067A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral surface
- pipe
- elastic seal
- seal material
- insertion tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Constructive 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
- F16L25/06—Constructive 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 comprising radial locking means
- F16L25/065—Constructive 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 comprising radial locking means the locking means being actuated by radial screws
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
Abstract
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【発明の属する技術分野】本発明は、水道管、ガス管、
プラント配管等の流体管の管継手のシール構造に関し、
詳しくは、受口管部に挿入接続された挿入管部に、前記
受口管部の内周面と挿入管部の外周面との間の環状間隙
を閉塞可能な環状の弾性シール材と、該弾性シール材を
管軸芯方向から押圧可能なシール押面を備え、かつ、最
小内径が挿入管部の外径よりも大に構成される押輪とを
外装するとともに、前記弾性シール材を圧縮させる側
に、前記押輪を管軸芯方向に沿って強制移動させる締結
機構を設けてある管継手のシール構造に関する。TECHNICAL FIELD The present invention relates to a water pipe, a gas pipe,
Regarding the seal structure of pipe fittings for fluid pipes such as plant piping,
Specifically, in the insertion pipe portion that is inserted and connected to the receiving pipe portion, an annular elastic seal member capable of closing the annular gap between the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the insertion pipe portion, The elastic sealing material is provided with a seal pressing surface that can be pressed from the axial direction of the tube, and a pressing ring having a minimum inner diameter larger than the outer diameter of the insertion tube is installed as an exterior, and the elastic sealing material is compressed. The present invention relates to a sealing structure for a pipe joint, in which a fastening mechanism for forcibly moving the push ring along the tube axis is provided on the side where the push ring is pushed.
【０００２】[0002]
【従来の技術】従来、この種の管継手のシール構造は、
前記押輪を締結機構により管軸芯方向に沿って弾性シー
ル材を圧縮させる側に強制移動し、前記弾性シール材に
対する押輪のシール押面による押圧力で弾性シール材を
弾性圧縮させて、該弾性シール材を受口管部の内周面と
挿入管部の外周面とに亘って密着させることにより、該
受口管部の内周面と挿入管部の外周面との間の環状間隙
を閉塞して、挿入管部と受口管部との接続部分のシール
性を確保するように構成されている。しかしながら、前
記押輪の最小内径は、該押輪の挿入管部に対する装着作
業の容易化を図る目的から、挿入管部の外径よりも大に
構成されているため、押輪のシール押面で弾性シール材
を圧縮する際、押輪の軸芯と挿入管部の管軸芯とが偏心
し易く、該挿入管部の管軸芯と押輪の管軸芯とが偏心し
たままで無理に弾性シール材を圧縮すると、弾性シール
材が片締め状態となって、該弾性シール材を受口管部の
内周面及び挿入管部の外周面に対して周方向で均等に押
圧密着させることができなくなり、挿入管部と受口管部
との接続部分のシール不良を招来する問題がある。そこ
で、従来の管継手のシール構造の問題点を解決するもの
としては、前記押輪のシール押面の周方向に沿って、弾
性シール材側に向かって突出する横断面半円状の係合突
起を一体形成するとともに、前記弾性シール材には、前
記締結機構による押輪の弾性シール材側への移動に伴っ
て前記係合突起が係入して、挿入管部の管軸芯と押輪の
管軸芯とが合致するように該押輪を管径方向に移動案内
する横断面半円状の係合凹部を形成したもの（例えば、
実開昭６３−１７８６８７号公報参照）、或いは、前記
締結機構による押輪の弾性シール材側への移動に連れ
て、前記挿入管部の管軸芯と押輪の管軸芯とが合致する
ように該押輪を管径方向に移動案内する傾斜ガイド面を
備えた楔部材に、弾性シール材の軸芯方向一側面に対し
て管軸芯方向から突き刺し可能な針部を突設したもの
（例えば、実開昭５５−２９７６８号公報参照）が提案
されている。2. Description of the Related Art Conventionally, this type of pipe joint seal structure is
The push ring is forcibly moved along the tube axis direction toward the side where the elastic seal material is compressed by the fastening mechanism, and the elastic seal material is elastically compressed by the pressing force of the seal push surface of the push ring against the elastic seal material, and the elastic seal material is elastically compressed. By bringing the sealing material into close contact with the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the insertion pipe portion, an annular gap is formed between the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the insertion pipe portion. It is configured to be closed so as to ensure the sealing property of the connecting portion between the insertion tube portion and the receiving tube portion. However, since the minimum inner diameter of the push ring is configured to be larger than the outer diameter of the insertion pipe portion for the purpose of facilitating the mounting work of the push ring to the insertion pipe portion, the elastic pushing seal surface of the push ring is elastically sealed. When compressing the material, the axis of the push ring and the tube axis of the insertion tube portion are easily eccentric, and the elastic seal material is forcibly pressed while the tube axis core of the insertion tube portion and the tube axis core of the pressing wheel remain eccentric. When compressed, the elastic seal material is tightened, and it becomes impossible to evenly press and contact the elastic seal material with the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the insertion pipe portion in the circumferential direction. There is a problem that a sealing failure occurs at the connecting portion between the insertion tube portion and the receiving tube portion. Therefore, as a means for solving the problems of the conventional seal structure of a pipe joint, an engaging projection having a semicircular cross section protruding toward the elastic seal material side along the circumferential direction of the seal pressing surface of the pressing ring. And the engaging protrusion is engaged with the elastic seal material as the push ring moves toward the elastic seal material side by the fastening mechanism, and the tube shaft core of the insertion tube portion and the tube of the push ring are inserted. An engaging recess having a semicircular cross section for guiding and guiding the push ring in the pipe radial direction so as to match the shaft center (for example,
(See Japanese Utility Model Laid-Open No. 63-178687), or so that the tube axis of the insertion tube portion and the tube axis of the pressing wheel are aligned with each other as the push ring moves toward the elastic seal material side. A wedge member provided with an inclined guide surface for moving and guiding the push ring in the pipe radial direction, in which a needle portion capable of being pierced from the pipe axial direction is provided on one side surface of the elastic seal material in the axial direction (for example, Japanese Utility Model Laid-Open No. 55-29768) is proposed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記提
案された管継手のシール構造のうち、前者の場合では、
押輪と弾性シール材とを前記係合突起及び係合凹部を備
えた形状のものに改造する必要があり、改造に伴う管継
手の製造コストの高騰化を招来するとともに、既設の管
継手の弾性シール材を、係合凹部を備えた弾性シール材
に交換する場合でも、耐用年数に満たない使用可能な押
輪も同時に係合突起を備えた押輪に交換する必要があ
り、その結果、交換部品点数の増加と施工工程数の増加
とによって、従来に比して部品交換コストの上昇を招来
する問題がある。However, of the above proposed seal structures for pipe joints, in the former case,
It is necessary to modify the push ring and the elastic seal material into a shape having the engaging projection and the engaging recess, which leads to an increase in the manufacturing cost of the pipe joint due to the modification, and the elasticity of the existing pipe joint. Even when the sealing material is replaced with an elastic sealing material having an engaging recess, it is necessary to replace the usable push ring with less than its useful life with a push wheel having an engaging projection at the same time. There is a problem that the replacement cost of parts is increased as compared with the conventional case due to the increase of the number of parts and the number of construction steps.
【０００４】また、後者の場合では、前記弾性シール材
と楔部材とを各別に製造する必要があるため、製造コス
トの高騰化の要因となるばかりでなく、施工時には、挿
入管部に弾性シール材を外装したのち、この弾性シール
材の所定位置に楔部材の針部を管軸芯方向から一々突き
刺さなければならず、その結果、施工現場での資材管理
の煩雑化と組付工数の増加に伴う作業能率の低下とを招
来する問題がある。しかも、前記楔部材の針部を弾性シ
ール材に突き刺す際、その突き刺し位置が所定の楔止着
位置から挿入管部の管径方向にずれた場合では、締結機
構により押輪を弾性シール材側に移動させても、挿入管
部の管軸芯と押輪の管軸芯とが合致せず、そのまま無理
に弾性シール材を弾性圧縮すると、弾性シール材が片締
め状態となって、該弾性シール材を受口管部の内周面及
び挿入管部の外周面に対して周方向で均等に密着させる
ことができなくなり、挿入管部と受口管部との接続部分
のシール不良を招来する問題がある。In the latter case, since it is necessary to separately manufacture the elastic sealing material and the wedge member, this not only causes a rise in the manufacturing cost, but also at the time of construction, the elastic sealing is applied to the insertion pipe portion. After covering the material, the needle of the wedge member must be pierced into the prescribed position of this elastic seal material one by one from the axial direction of the pipe, resulting in complicated material management at the construction site and an increase in the number of assembly steps. However, there is a problem that the work efficiency is deteriorated due to the above. Moreover, when the needle portion of the wedge member is pierced into the elastic seal material, if the piercing position is displaced from the predetermined wedge fastening position in the pipe radial direction of the insertion pipe portion, the pressing ring is moved to the elastic seal material side by the fastening mechanism. Even if it is moved, the tube axis of the insertion tube part and the tube axis of the push ring do not match, and if the elastic seal material is forcibly compressed as it is, the elastic seal material will be in a partially tightened state and the elastic seal material will be tightened. Cannot be evenly adhered to the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the inserting pipe portion in the circumferential direction, resulting in poor sealing of the connecting portion between the inserting pipe portion and the receiving pipe portion. There is.
【０００５】本発明は、上記実状に鑑みて為されたもの
であって、その目的は、シール性能に勝れた管継手を設
備面及び製造コスト面で有利に製作することができると
ともに、管継手の新設及び既設の管継手のシール材交換
作業の何れも能率良く行うことができる管継手のシール
構造を提供する点にある。The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to manufacture a pipe joint excellent in sealing performance in terms of equipment and manufacturing cost, and to An object of the present invention is to provide a seal structure for a pipe joint that can efficiently perform both the new installation of the joint and the replacement work of the seal material of the existing pipe joint.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項１記載の管継手のシール構造の特徴
構成は、受口管部に挿入接続された挿入管部に、前記受
口管部の内周面と挿入管部の外周面との間の環状間隙を
閉塞可能な環状の弾性シール材と、該弾性シール材を管
軸芯方向から押圧可能なシール押面を備え、かつ、最小
内径が挿入管部の外径よりも大に構成される押輪とを外
装するとともに、前記弾性シール材を圧縮させる側に、
前記押輪を管軸芯方向に沿って強制移動させる締結機構
を設けてある管継手のシール構造であって、前記弾性シ
ール材に、前記締結機構による押輪の弾性シール材側へ
の移動に連れて、前記挿入管部の管軸芯と押輪の軸芯と
が合致するように該押輪を管径方向に移動案内する傾斜
ガイド面を備えたガイド部が一体形成されている点にあ
る。上記特徴構成では、前記弾性シール材に前記ガイド
部を一体形成することにより、押輪を締結機構により管
軸芯方向に沿って弾性シール材を圧縮させる側に強制移
動すると、この移動に伴って押輪の内周面がガイド部の
傾斜ガイド面で摺接案内されながら、該押輪が管径方向
に移動案内されて、挿入管部の管軸芯と押輪の管軸芯と
が合致し、その状態で押輪のシール押面にて弾性シール
材の所定位置を押圧圧縮させて、該弾性シール材を受口
管部の内周面と挿入管部の外周面とに亘ってほぼ周方向
に均等に密着させることができる。しかも、前記ガイド
部が弾性シール材に一体形成されているので、製造設備
としては弾性シール材の金型の一部を変更するだけの簡
単な改良だけで済み、かつ、部品点数の増加も抑制する
ことができる。それ故に、挿入管部の管軸芯と押輪の軸
芯とを合致させるための部品点数のみならず組付け工程
数を削減することができ、しかも、既設の押輪をそのま
ま使用することができるから、シール性能に勝れた管継
手を設備面及び製造コスト面で有利に製作することがで
きるとともに、管継手の新設及び既設の管継手のシール
材交換作業の何れも能率良く行うことができる。In order to achieve the above object, a characteristic structure of a seal structure for a pipe joint according to claim 1 of the present invention is that the insertion pipe part inserted into and connected to a receiving pipe part is An annular elastic seal material capable of closing an annular gap between the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the insertion pipe portion, and a seal pressing surface capable of pressing the elastic seal material from the pipe axis direction. And, with the outer diameter of the push ring configured to have a minimum inner diameter larger than the outer diameter of the insertion tube portion, on the side that compresses the elastic seal material,
A sealing structure of a pipe joint, which is provided with a fastening mechanism for forcibly moving the push ring along the tube axis direction, wherein the elastic seal material is moved by the fastening mechanism toward the elastic seal material side. The guide part is integrally formed with an inclined guide surface that guides the push ring in the pipe radial direction so that the tube axis of the insertion tube and the axis of the push wheel match. In the above-mentioned characteristic configuration, by integrally forming the guide portion on the elastic seal material, when the push wheel is forcibly moved to the side for compressing the elastic seal material along the tube axis direction by the fastening mechanism, the push wheel is accompanied by this movement. While the inner peripheral surface of the guide is slidably guided by the inclined guide surface of the guide part, the push ring is moved and guided in the pipe radial direction, and the tube axis core of the insertion tube part and the tube axis core of the push wheel are aligned with each other. By pressing and compressing a predetermined position of the elastic seal material on the seal pressing surface of the push wheel, the elastic seal material is evenly distributed in the circumferential direction over the inner peripheral surface of the receiving pipe portion and the outer peripheral surface of the insertion pipe portion. Can be closely attached. Moreover, since the guide portion is integrally formed with the elastic sealing material, the manufacturing facility only needs to be modified simply by changing a part of the elastic sealing material mold, and the increase in the number of parts can be suppressed. can do. Therefore, it is possible to reduce not only the number of parts for assembling the tube axis of the insertion tube portion and the axis of the push ring, but also the number of assembling steps, and the existing push ring can be used as it is. In addition, it is possible to manufacture a pipe joint excellent in sealing performance in terms of equipment and manufacturing cost, and it is possible to efficiently perform the sealing material replacement work for a new pipe joint and an existing pipe joint.
【０００７】本発明の請求項２記載の管継手のシール構
造の特徴構成は、前記ガイド部が、前記弾性シール材の
軸芯方向一側面の全周に亘って一体形成されている点に
ある。上記特徴構成では、前記弾性シール材を挿入管部
の外周面に装着する際、例えば、前記ガイド部が、弾性
シール材の管軸芯方向一側面の周方向の一箇所に設けら
れている場合のように、弾性シール材のガイド部が挿入
管部の外周面の最上部に位置するように両者を位置合せ
する必要がなく、前記挿入管部に対する弾性シール材の
装着作業をラフに行うことができる。A characteristic structure of a seal structure for a pipe joint according to a second aspect of the present invention is that the guide portion is integrally formed over the entire circumference of one side surface in the axial direction of the elastic seal material. . In the above characteristic configuration, when the elastic seal material is mounted on the outer peripheral surface of the insertion tube portion, for example, when the guide portion is provided at one position in the circumferential direction on one side of the elastic seal material in the pipe axis direction. As described above, it is not necessary to position the elastic seal material so that the guide portion of the elastic seal material is located at the uppermost part of the outer peripheral surface of the insertion tube portion, and the elastic seal material can be roughly attached to the insertion tube portion. You can
【０００８】本発明の請求項３記載の管継手のシール構
造の特徴構成は、前記ガイド部が、前記弾性シール材の
軸芯方向一側面の周方向の一箇所又は周方向の複数箇所
に設けられている点にある。上記特徴構成では、前記ガ
イド部の周方向両端が遊端となっているので、例えば、
前記ガイド部が、前記弾性シール材の管軸芯方向一側面
の全周に亘って一体形成されているものに比べて、ガイ
ド部が管径方向外方に弾性的に撓み変形し易いため、挿
入管部の外周面にガイド部を簡単に装着し易く、この装
着されたガイド部を利用して弾性シール材全体を挿入管
部にスムーズに押込み装着することができる。According to a third feature of the seal structure for a pipe joint of the present invention, the guide portion is provided at one circumferential position on one side of the elastic seal material in the axial direction or at a plurality of circumferential locations. There is a point. In the above characteristic configuration, since both circumferential ends of the guide portion are free ends, for example,
Since the guide portion is elastically bent and deformed outward in the pipe radial direction, as compared with one in which the guide portion is integrally formed over the entire circumference of one side surface of the elastic seal material in the pipe axis direction, It is easy to easily attach the guide portion to the outer peripheral surface of the insertion pipe portion, and by using the attached guide portion, the entire elastic seal material can be smoothly pushed into the insertion pipe portion and attached.
【０００９】本発明の請求項４記載の管継手のシール構
造の特徴構成は、前記ガイド部が、前記弾性シール材の
軸芯方向両側面の各々に設けられている点にある。上記
特徴構成では、前記弾性シール材を挿入管部の外周面に
装着する際、該弾性シール材の何れの端部側からでも装
着可能であるため、ガイド部の存在位置を一々確認する
必要がなく、前記挿入管部に対する弾性シール材の装着
作業をラフに行うことができる。更に、前記一方のガイ
ド部に接触する受口管部の内径が、他方のガイド部に接
触する押輪の内径と同一又はほぼ同一に構成されている
場合では、弾性シール材が外装された挿入管部に受口管
部を外嵌接続する際、一方のガイド部に沿って受口管部
が管径方向に移動案内されて、挿入管部の管軸芯と受口
管部の管軸芯とが合致し、これら挿入管部と受口管部と
の芯合わせを行うことができる。A characteristic structure of the seal structure for a pipe joint according to a fourth aspect of the present invention resides in that the guide portions are provided on both side surfaces of the elastic seal material in the axial direction. In the above characteristic configuration, when the elastic sealing material is mounted on the outer peripheral surface of the insertion tube portion, it is possible to mount the elastic sealing material from any end side of the elastic sealing material, so that it is necessary to check the existing positions of the guide portions one by one. Instead, the work of mounting the elastic sealing material on the insertion tube portion can be roughly performed. Further, in the case where the inner diameter of the receiving pipe portion contacting the one guide portion is the same as or substantially the same as the inner diameter of the push ring contacting the other guide portion, the insertion pipe covered with the elastic sealing material is installed. When the receiving pipe part is externally fitted and connected to the pipe part, the receiving pipe part is moved and guided in the pipe radial direction along one guide part, and the pipe axis core of the insertion pipe part and the pipe axis core of the receiving pipe part And, the insertion tube portion and the socket tube portion can be aligned.
【００１０】本発明の請求項５記載の管継手のシール構
造の特徴構成は、前記挿入管部の外径の半径Ｒ１と、挿
入管部に外装する前の前記ガイド部の内周面の遊端側の
半径Ｒ２と、挿入管部に外装する前の前記弾性シール材
の内周面の半径Ｒ３とが、 Ｒ１＞Ｒ２＞Ｒ３、又は、Ｒ１＝Ｒ２＞Ｒ３ の関係に構成されているとともに、前記挿入管部に外装
する前の前記ガイド部の内周面が、前記弾性シール材側
ほど小径となるテーパー面に形成されている点にある。
上記特徴構成では、前記挿入管部の外周面に装着した状
態では弾性シール材の内周面のみならず、ガイド部の内
周面の少なくとも一部が挿入管部の外周面に密着する。
しかも、ガイド部の内周面の遊端側の半径Ｒ２が弾性シ
ール材の内周面の半径Ｒ３よりも大で、かつ、弾性シー
ル材側ほど小径となるテーパー面に形成されているの
で、挿入管部に対して弾性シール材よりもガイド部のほ
うが外装し易く、ガイド部を先に挿入管部に外装するこ
とにより、該ガイド部を弾性シール材の外装案内部とし
て利用することができる。それ故に、弾性シール材のみ
ならずガイド部でもシール機能を発揮することができる
ので、弾性シール材と挿入管部の外周面との間のシール
性の向上を図ることができ、しかも、ガイド部を外装案
内部として利用することにより弾性シールを挿入管部に
迅速、容易に外装することができる。According to a fifth aspect of the present invention, there is provided a characteristic feature of a seal structure for a pipe joint, wherein a radius R1 of an outer diameter of the insertion pipe portion and a play of an inner peripheral surface of the guide portion before the insertion pipe portion is covered. The radius R2 on the end side and the radius R3 of the inner peripheral surface of the elastic sealing material before being sheathed in the insertion tube portion are configured to have a relationship of R1>R2> R3 or R1 = R2> R3. The inner peripheral surface of the guide portion before being sheathed in the insertion tube portion is formed into a tapered surface having a smaller diameter on the elastic seal material side.
In the above characteristic configuration, when mounted on the outer peripheral surface of the insertion tube portion, not only the inner peripheral surface of the elastic sealing material but also at least part of the inner peripheral surface of the guide portion is in close contact with the outer peripheral surface of the insertion tube portion.
Moreover, since the radius R2 on the free end side of the inner peripheral surface of the guide portion is larger than the radius R3 of the inner peripheral surface of the elastic seal material, and the radius is smaller on the elastic seal material side, the tapered surface is formed. The guide portion is easier to cover the insertion pipe portion than the elastic sealing material, and the guide portion can be used as the exterior guide portion of the elastic sealing material by first covering the insertion pipe portion with the insertion pipe portion. . Therefore, not only the elastic sealing material but also the guide portion can exert the sealing function, so that the sealing performance between the elastic sealing material and the outer peripheral surface of the insertion tube portion can be improved, and moreover, the guide portion can be improved. By using as an exterior guide portion, the elastic seal can be quickly and easily exterior mounted on the insertion tube portion.
【００１１】本発明の請求項６記載の管継手のシール構
造の特徴構成は、前記ガイド部に、前記挿入管部の外周
面に対する滑剤を充填可能な滑剤溜りが形成されている
点にある。上記特徴構成では、弾性シール材の外装時
に、滑剤溜りに滑剤を充填することにより、滑剤溜りを
通してガイド部の内面と挿入管部の外周面との間、更に
は、弾性シール材の内周面と挿入管部との間に滑剤を供
給することができ、挿入管部に対する弾性シール材の外
装作業をスムーズに行わせることができるとともに、前
記押輪の傾斜ガイド面に沿っての摺動もスムーズに行わ
せることができる。According to a sixth aspect of the present invention, there is provided a characteristic feature of the seal structure for a pipe joint in that the guide portion is provided with a lubricant reservoir capable of filling the outer peripheral surface of the insertion pipe portion with a lubricant. In the above characteristic configuration, when the elastic seal material is installed, by filling the lubricant reservoir with the lubricant, between the inner surface of the guide portion and the outer peripheral surface of the insertion tube portion through the lubricant reservoir, and further, the inner peripheral surface of the elastic seal material. It is possible to supply a lubricant between the insertion tube and the insertion tube, so that the outer sealing work of the elastic sealing material on the insertion tube can be performed smoothly, and the sliding along the inclined guide surface of the push ring is also smooth. Can be done.
【００１２】本発明の請求項７記載の管継手のシール構
造の特徴構成は、前記押輪に、前記挿入管部の外周面に
対して管径方向から食い込み可能な係止体と、該係止体
を食い込み側に強制移動させる移動手段とが設けられて
いるとともに、前記係止体と挿入管部の外周面との間
に、前記ガイド部の一部が介在されている点にある。上
記特徴構成では、前記押輪に設けた係止体を挿入管部の
外周面に食い込ませることによって、挿入管部に作用す
る引張力を押輪を媒体として締結機構に受け止めさせる
ことができるから、挿入管部と受口管部とを所期の接続
状態に維持することができる。しかも、前記係止体がガ
イド部の一部を刺し通した状態で挿入管部の外周面に食
い込むので、例え、この係止体の食い込みによって挿入
管部の外周面に施されている腐食防止塗料が剥がれて
も、この部分をガイド部の一部を利用して密封すること
ができる。それ故に、押輪の芯合わせの為に設けられて
いる弾性シール材のガイド部の一部を利用して、挿入管
部の係止体食い込み箇所の防蝕処理をコスト面で有利に
行うことができる。According to a seventh aspect of the present invention, there is provided a characteristic feature of a seal structure for a pipe joint, which is characterized in that the push ring is engaged with the outer peripheral surface of the insertion pipe portion in a radial direction of the pipe, and the lock body. A moving means for forcibly moving the body to the bite side is provided, and a part of the guide portion is interposed between the locking body and the outer peripheral surface of the insertion tube portion. In the above-mentioned characteristic configuration, since the engaging body provided on the push ring is made to bite into the outer peripheral surface of the insertion tube portion, the pulling force acting on the insertion tube portion can be received by the fastening mechanism using the push ring as a medium. The pipe portion and the socket pipe portion can be maintained in the desired connection state. Moreover, since the locking body bites into the outer peripheral surface of the insertion tube portion while piercing a part of the guide portion, for example, the corrosion prevention provided on the outer peripheral surface of the insertion tube portion due to the biting of the locking body. Even if the paint is peeled off, this part can be sealed by using a part of the guide part. Therefore, by using a part of the guide portion of the elastic seal material provided for the centering of the push ring, the anticorrosion treatment of the engaging body biting portion of the insertion tube portion can be advantageously performed in terms of cost. .
【００１３】[0013]
〔第１実施形態〕図１の(イ) ，(ロ) は本発明の管継手の
シール構造の第１実施形態を示し、連通接続された２本
の配管Ｈ、Ｈのうちの一方の配管Ｈの端部に膨出形成さ
れて受口管部１に挿入接続された他方の配管Ｈの挿入管
部２に、ゴム製の環状の弾性シール材３と、該弾性シー
ル材３を挿入管部２の開口端側に向かって管軸芯Ｐ方向
から押圧可能なシール押面４Ａを備えた押輪４とを外装
するとともに、該押輪４と受口管部１とを締結し、か
つ、弾性シール材３を圧縮させる側、つまり、受口管部
１の内周面と挿入管部２の外周面との間に形成される環
状間隙Ｓ側に、押輪４を管軸芯Ｐ方向に沿って強制移動
させる締結機構５を設けて構成されている。前記押輪４
の内周面は、シール押面４Ａ側ほど内径が小となるテー
パー面に構成されていて、該押輪４の内周面の最小内径
が挿入管部２の外径よりも大に構成されている。[First Embodiment] FIGS. 1 (a) and 1 (b) show the first embodiment of the seal structure for a pipe joint of the present invention, in which one of two pipes H, H connected in communication is connected. The rubber annular elastic seal member 3 and the elastic seal member 3 are inserted into the insertion pipe portion 2 of the other pipe H which is bulged at the end portion of H and is inserted and connected to the receiving pipe portion 1. The push ring 4 having a seal pushing surface 4A that can be pushed from the tube axis P direction toward the opening end side of the portion 2 is exteriorly mounted, and the push ring 4 and the socket pipe portion 1 are fastened and elastic. On the side where the sealing material 3 is compressed, that is, on the side of the annular gap S formed between the inner peripheral surface of the receiving pipe portion 1 and the outer peripheral surface of the insertion pipe portion 2, the push ring 4 is arranged along the pipe axis P direction. A fastening mechanism 5 for forcibly moving is provided. The push ring 4
The inner peripheral surface of is configured as a tapered surface having an inner diameter smaller toward the seal pressing surface 4A side, and the minimum inner diameter of the inner peripheral surface of the pressing ring 4 is larger than the outer diameter of the insertion tube portion 2. There is.
【００１４】図２の(イ) ，(ロ) に示すように、前記弾性
シール材３には、前記締結機構５による押輪４の弾性シ
ール材３側への移動に連れて、挿入管部２の管軸芯Ｐと
押輪４の軸芯Ｑとが合致するように該押輪４を管径方向
に移動案内する、管軸芯Ｐ方向遊端側ほど外径が小なる
傾斜ガイド面６Ａを備えたガイド部６が、弾性シール材
３の軸芯方向両側面のうち、前記押輪４のシール押面４
Ａと相対向する一側面の全周に亘って、前記弾性シール
材３と同芯状に一体形成されていて、挿入管部２に外装
した状態では、ガイド部６の基端側の最大外径が、押輪
４の内周面の最小内径とほぼ同一寸法となるように構成
されている。As shown in FIGS. 2 (a) and 2 (b), the insertion tube portion 2 is attached to the elastic seal member 3 as the push ring 4 is moved to the elastic seal member 3 side by the fastening mechanism 5. Is provided with an inclined guide surface 6A having a smaller outer diameter toward the free end side in the pipe axis P direction, which guides the push ring 4 in the pipe radial direction so that the pipe axis core P of the above and the shaft core Q of the push wheel 4 coincide with each other. The guide portion 6 is provided on the both sides of the elastic seal material 3 in the axial direction, and the seal pushing surface 4 of the pushing wheel 4 is provided.
A is integrally formed concentrically with the elastic seal material 3 over the entire circumference of one side facing A, and in the state of being externally mounted on the insertion tube portion 2, the maximum outer end of the guide portion 6 on the base end side. The diameter is configured to be substantially the same as the minimum inner diameter of the inner peripheral surface of the push wheel 4.
【００１５】前記挿入管部２の外径の半径Ｒ１と、挿入
管部２に外装する前のガイド部６の内周面の遊端側の半
径Ｒ２と、挿入管部２に外装する前の弾性シール材３の
内周面の半径Ｒ３とは、 Ｒ１＞Ｒ２＞Ｒ３ の関係に構成されているとともに、挿入管部２に外装す
る前のガイド部６の内周面の基端側の半径は、挿入管部
２に外装する前の弾性シール材３の内周面の半径Ｒ３と
同一寸法に構成されていて、前記挿入管部２に外装する
前のガイド部３の内周面が、弾性シール材３側ほど小径
となるテーパー面に形成されている。詳しくは、前記挿
入管部２に外装する前のガイド部６の内周面の遊端側の
半径Ｒ２が、挿入管部２の外径の半径Ｒ１の９９％の寸
法に構成されているとともに、挿入管部２に外装する前
の弾性シール材３の内周面の半径Ｒ３が、挿入管部２の
外径の半径Ｒ１の９７〜９８％の寸法に構成されてい
る。従って、前記挿入管部２の外周面に装着した状態で
は弾性シール材３の内周面のみならず、ガイド部６の内
周面が挿入管部２の外周面に密着する。しかも、前記ガ
イド部６の内周面が前記テーパー面に形成されているの
で、挿入管部２に対して弾性シール材３よりもガイド部
６のほうが外装し易く、ガイド部６を先に挿入管部２に
外装することにより、該ガイド部６を弾性シール材３の
外装案内部として利用することができ、弾性シール３を
挿入管部２に迅速、容易に外装することができる。尚、
前記挿入管部２の外径の半径Ｒ１と、挿入管部２に外装
する前のガイド部６の内周面の遊端側の半径Ｒ２と、挿
入管部２に外装する前の弾性シール材３の内周面の半径
Ｒ３とが、Ｒ１＞Ｒ２＞Ｒ３の関係に構成されているな
らば、上記のパーセントで示す寸法関係は適宜変更が可
能である。The radius R1 of the outer diameter of the insertion tube portion 2, the radius R2 of the free end side of the inner peripheral surface of the guide portion 6 before the insertion pipe portion 2, and the outer diameter of the guide pipe 6 before the insertion pipe portion 2 are covered. The radius R3 of the inner peripheral surface of the elastic sealing material 3 is configured to satisfy the relation of R1>R2> R3, and the radius of the inner peripheral surface of the guide portion 6 before the outer peripheral surface of the guide portion 6 is attached to the base end side radius. Is configured to have the same size as the radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion pipe portion 2, and the inner peripheral surface of the guide portion 3 before being sheathed in the insertion pipe portion 2 is The tapered surface is formed such that the diameter becomes smaller toward the elastic seal material 3 side. Specifically, the radius R2 on the free end side of the inner peripheral surface of the guide portion 6 before being sheathed in the insertion pipe portion 2 is configured to be 99% of the radius R1 of the outer diameter of the insertion pipe portion 2. The radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion tube portion 2 is configured to be 97 to 98% of the radius R1 of the outer diameter of the insertion tube portion 2. Therefore, when mounted on the outer peripheral surface of the insertion tube portion 2, not only the inner peripheral surface of the elastic sealing material 3 but also the inner peripheral surface of the guide portion 6 is in close contact with the outer peripheral surface of the insertion tube portion 2. Moreover, since the inner peripheral surface of the guide portion 6 is formed as the tapered surface, the guide portion 6 is easier to be mounted on the insertion pipe portion 2 than the elastic sealing material 3, and the guide portion 6 is inserted first. By covering the pipe portion 2, the guide portion 6 can be used as a guide portion for the elastic sealing material 3, and the elastic seal 3 can be quickly and easily mounted on the insertion pipe portion 2. still,
The radius R1 of the outer diameter of the insertion tube portion 2, the radius R2 of the free end side of the inner peripheral surface of the guide portion 6 before the insertion of the insertion tube portion 2, and the elastic seal material before the insertion portion of the insertion tube portion 2 If the radius R3 of the inner peripheral surface of 3 is R1>R2> R3, the dimensional relationship indicated by the above percentage can be appropriately changed.
【００１６】更に、前記弾性シール材３及びガイド部６
を、挿入管部２の外周面に対して外装し易いように、予
め挿入管部２の外周面には滑剤としての植物性セルロー
スが塗布されている。Further, the elastic seal material 3 and the guide portion 6 are provided.
In order that the outer peripheral surface of the insertion tube portion 2 can be easily packaged, vegetable cellulose as a lubricant is applied to the outer peripheral surface of the insertion tube portion 2 in advance.
【００１７】前記締結機構５は、受口管部１のフランジ
１Ａの管周方向複数箇所に等間隔を隔てて貫通形成され
たボルト挿通孔１Ｂと、押輪４のフランジ４Ａの管周方
向複数箇所に等間隔を隔てて貫通形成されたボルト挿通
孔４Ｂとに亘って挿通された複数本の頭付き連結ボルト
７と、該連結ボルト７の先端側に螺合されるナット８と
から構成されている。The fastening mechanism 5 includes bolt insertion holes 1B formed through the flange 1A of the receiving tube portion 1 at a plurality of positions in the circumferential direction of the pipe at equal intervals, and a plurality of positions of the flange 4A of the push ring 4 in the circumferential direction of the pipe. A plurality of headed connecting bolts 7 that are inserted through bolt insertion holes 4B that are formed through the bolts at regular intervals, and a nut 8 that is screwed to the tip side of the connecting bolts 7. There is.
【００１８】上記の構成によれば、前記押輪４を、挿入
管部２の外周面に外装された弾性シール材３に一体形成
されたガイド部６の傾斜ガイド面６Ａに吊下げ状態で外
装するとともに、受口管部１のフランジ１Ａのボルト挿
通孔１Ｂと押輪４のフランジ４Ａのボルト挿通孔４Ｂと
に亘って、前記締結機構５を構成する連結ボルト７を挿
通してナット８を締付け操作すると、押輪４の内周面の
最小内径部分がガイド部６の傾斜ガイド面６Ａに摺接し
ながら弾性シール材３側に強制移動され、この移動に連
れて、押輪４が管径方向の上方外方に向かって移動案内
される。そして、前記押輪４のシール押面４Ａと弾性シ
ール材３とが接当する状態では、押輪４の内周面の最小
内径部分がガイド部６の傾斜ガイド面６Ａの基端部に外
嵌して、挿入管部２の管軸芯Ｐと押輪４の軸芯Ｑとが合
致する。更に、前記ナット８を締付け操作すると、前記
弾性シール材３は押輪４のシール押面４Ａに押圧され
て、該押輪４と共に受口管部１側に管軸芯Ｐ方向に沿っ
て強制移動され、弾性シール材３は、受口管部１の内周
面と挿入管部２の外周面との間に形成される環状間隙Ｓ
のうち、受口管部１の開口側の大径内周面部分と挿入管
部２の外周面との間に形成されるシール材嵌入部９に強
制的に押し込まれて圧縮され、弾性シール材３の内周面
と外周面の各々が、シール材嵌入部９の内周面と挿入管
部２の外周面とに密着して、前記環状間隙Ｓがこの弾性
シール材３により閉塞される。According to the above construction, the push wheel 4 is mounted on the slanted guide surface 6A of the guide portion 6 integrally formed with the elastic sealing material 3 mounted on the outer peripheral surface of the insertion tube portion 2 in a suspended state. Along with the bolt insertion hole 1B of the flange 1A of the socket 1 and the bolt insertion hole 4B of the flange 4A of the push ring 4, the connecting bolt 7 constituting the fastening mechanism 5 is inserted and the nut 8 is tightened. Then, the minimum inner diameter portion of the inner peripheral surface of the push wheel 4 is forcibly moved to the elastic seal material 3 side while slidingly contacting the inclined guide surface 6A of the guide portion 6, and along with this movement, the push wheel 4 moves upward and downward in the pipe radial direction. You will be guided toward you. Then, in the state where the seal pressing surface 4A of the push wheel 4 and the elastic sealing material 3 are in contact with each other, the smallest inner diameter portion of the inner peripheral surface of the push wheel 4 is fitted onto the base end portion of the inclined guide surface 6A of the guide portion 6. Then, the tube axis P of the insertion tube portion 2 and the axis Q of the push ring 4 match. Further, when the nut 8 is tightened, the elastic seal material 3 is pressed against the seal pressing surface 4A of the push wheel 4 and is forcibly moved together with the push wheel 4 toward the socket tube portion 1 side along the pipe axis P direction. The elastic sealing material 3 has an annular gap S formed between the inner peripheral surface of the receiving pipe portion 1 and the outer peripheral surface of the insertion pipe portion 2.
Of these, the elastic seal is forcibly pushed into a seal member fitting portion 9 formed between the large-diameter inner peripheral surface portion on the opening side of the receiving pipe portion 1 and the outer peripheral surface of the insertion pipe portion 2 to be compressed. Each of the inner peripheral surface and the outer peripheral surface of the material 3 is in close contact with the inner peripheral surface of the seal material fitting portion 9 and the outer peripheral surface of the insertion pipe portion 2, and the annular gap S is closed by the elastic seal material 3. .
【００１９】〔第２実施形態〕図３、図４の(イ) ，(ロ)
は本発明の管継手のシール構造の第２実施形態を示し、
前記第１実施形態と同様に、前記弾性シール材３には、
連結ボルト７とナット８とから構成された締結機構５に
よる押輪４の弾性シール材３側への移動に連れて、挿入
管部２の管軸芯Ｐと押輪４の軸芯Ｑとが合致するよう
に、該押輪４を管径方向に移動案内する、軸芯方向遊端
側ほど外径が小なる傾斜ガイド面６Ａを備えたガイド部
６が、弾性シール材３の軸芯方向両側面のうち、前記押
輪４のシール押面４Ａと相対向する一側面の全周に亘っ
て、弾性シール材３と同芯状に一体形成されていて、挿
入管部２に外装した状態では、ガイド部６の基端側の最
大外径が、押輪４の内周面の最小内径とほぼ同一寸法と
なるように構成されている。また、前記弾性シール材３
の軸芯方向両側面のうちの他側面側は、その全周に亘っ
て断面円形状に膨出形成されている。[Second Embodiment] FIGS. 3 and 4 (a) and (b)
Shows a second embodiment of the seal structure for a pipe joint of the present invention,
Similar to the first embodiment, the elastic seal material 3 includes
With the movement of the push wheel 4 toward the elastic seal material 3 side by the fastening mechanism 5 including the connecting bolt 7 and the nut 8, the tube axis P of the insertion tube portion 2 and the axis Q of the push wheel 4 match. As described above, the guide portion 6 provided with the inclined guide surface 6A that guides the pushing wheel 4 in the radial direction of the pipe and has a smaller outer diameter toward the free end side in the axial direction is provided on both side surfaces in the axial direction of the elastic seal member 3. Of these, the guide portion is integrally formed concentrically with the elastic seal material 3 over the entire circumference of one side surface facing the seal pushing surface 4A of the push wheel 4 and is externally mounted on the insertion pipe portion 2. The maximum outer diameter of the base end side of 6 is substantially the same as the minimum inner diameter of the inner peripheral surface of the push ring 4. In addition, the elastic sealing material 3
The other side surface side of the both axial direction side surfaces is formed to bulge in a circular cross section over the entire circumference.
【００２０】前記挿入管部２の外径の半径Ｒ１と、挿入
管部２に外装する前のガイド部６の内周面の遊端側の半
径Ｒ２と、挿入管部２に外嵌装着する前の弾性シール材
３の基部３Ａの内周面の半径Ｒ３と、弾性シール材３の
膨出部３Ｂの内径の半径Ｒ４とは、 Ｒ１＞Ｒ２＞Ｒ３＞Ｒ４ の関係に構成されているとともに、挿入管部２に外装す
る前のガイド部６の内周面の基端側の半径は、挿入管部
２に外装する前の弾性シール材３の内周面の半径Ｒ３と
同一寸法に構成されていて、前記挿入管部２に外装する
前のガイド部３の内周面が、弾性シール材３側ほど小径
となるテーパー面に形成されている。The radius R1 of the outer diameter of the insertion tube portion 2, the radius R2 of the free end side of the inner peripheral surface of the guide portion 6 before being sheathed in the insertion tube portion 2, and the insertion fitting to the insertion tube portion 2 by external fitting. The radius R3 of the inner peripheral surface of the base portion 3A of the elastic sealing material 3 and the radius R4 of the inner diameter of the bulging portion 3B of the elastic sealing material 3 are configured such that R1>R2>R3> R4. The radius of the inner peripheral surface of the guide portion 6 before being sheathed in the insertion tube portion 2 on the proximal end side is the same as the radius R3 of the inner peripheral surface of the elastic seal material 3 before being sheathed in the insertion tube portion 2. The inner peripheral surface of the guide portion 3 before being sheathed in the insertion tube portion 2 is formed into a tapered surface having a smaller diameter on the elastic seal material 3 side.
【００２１】上記の構成によれば、前記押輪４を、挿入
管部２の外周面に外装された弾性シール材３に一体形成
されたガイド部６の傾斜ガイド面６Ａに吊下げ状態で外
装するとともに、受口管部１のフランジ１Ａのボルト挿
通孔１Ｂと押輪４のフランジ４Ａのボルト挿通孔４Ｂと
に亘って、前記締結機構５を構成する連結ボルト７を挿
通してナット８を締付け操作すると、押輪４の内周面の
最小内径部分がガイド部６の傾斜ガイド面に摺接しなが
ら弾性シール材３側に強制移動され、この移動に連れ
て、押輪４が管径方向の上方外方に向かって移動案内さ
れる。そして、前記押輪４のシール押面４Ａと弾性シー
ル材３とが接当する状態では、押輪４の内周面の最小内
径部分がガイド部６の傾斜ガイド面６Ａの基端部に外嵌
して、挿入管部２の管軸芯Ｐと押輪４の軸芯Ｑとが合致
する。更に、前記ナット８を締付け操作すると、前記弾
性シール材３は押輪４のシール押面４Ａに押圧されて、
該押輪４と共に受口管部１側に管軸芯Ｐ方向に沿って強
制移動され、弾性シール材３の膨出部３Ｂは、受口管部
１の内周面と挿入管部２の外周面との間に形成される環
状間隙Ｓのうち、受口管部１の開口側の大径内周面部分
と挿入管部２の外周面との間に形成されるシール材嵌入
部９の奥側の小間隙部分に押し潰されながら強制的に圧
入され、かつ、弾性シール材３の基部３Ａは、前記シー
ル材嵌入部９の開口側の大間隙部分に強制的に押し込ま
れて圧縮され、弾性シール材３の内周面と外周面の各々
が、シール材嵌入部９の内周面と挿入管部２の外周面と
に密着して、前記環状間隙Ｓがこの弾性シール材３によ
り閉塞される。その他の構成は、前記第１実施形態と同
様に構成されている。According to the above construction, the push wheel 4 is mounted in the suspended state on the inclined guide surface 6A of the guide portion 6 integrally formed with the elastic sealing material 3 which is mounted on the outer peripheral surface of the insertion tube portion 2. Along with the bolt insertion hole 1B of the flange 1A of the socket 1 and the bolt insertion hole 4B of the flange 4A of the push ring 4, the connecting bolt 7 constituting the fastening mechanism 5 is inserted and the nut 8 is tightened. Then, the minimum inner diameter portion of the inner peripheral surface of the push wheel 4 is forcibly moved to the elastic seal material 3 side while slidingly contacting the inclined guide surface of the guide portion 6, and along with this movement, the push wheel 4 moves upward and outward in the pipe radial direction. Will be guided to. Then, in the state where the seal pressing surface 4A of the push wheel 4 and the elastic sealing material 3 are in contact with each other, the smallest inner diameter portion of the inner peripheral surface of the push wheel 4 is fitted onto the base end portion of the inclined guide surface 6A of the guide portion 6. Then, the tube axis P of the insertion tube portion 2 and the axis Q of the push ring 4 match. Further, when the nut 8 is tightened, the elastic seal material 3 is pressed against the seal pressing surface 4A of the pressing wheel 4,
The bulging portion 3B of the elastic seal member 3 is forcedly moved along the tube axis P side toward the receiving tube portion 1 side together with the push wheel 4, and the bulging portion 3B of the elastic sealing material 3 is formed on the inner peripheral surface of the receiving tube portion 1 and the outer periphery of the insertion tube portion 2. In the annular gap S formed between the sealing member fitting portion 9 formed between the large-diameter inner peripheral surface portion on the opening side of the receiving pipe portion 1 and the outer peripheral surface of the insertion pipe portion 2, The elastic seal material 3 is forcibly pressed into the small gap portion on the inner side while being crushed, and the base portion 3A of the elastic seal material 3 is forcibly pushed into the large gap portion on the opening side of the seal material fitting portion 9 and compressed. The inner peripheral surface and the outer peripheral surface of the elastic seal material 3 are in close contact with the inner peripheral surface of the seal material fitting portion 9 and the outer peripheral surface of the insertion pipe portion 2, and the annular gap S is formed by the elastic seal material 3. Is blocked. Other configurations are the same as those in the first embodiment.
【００２２】〔第３実施形態〕図５、図６の(イ) ，(ロ)
は本発明の管継手のシール構造の第３実施形態を示し、
継ぎ輪Ｊを介して連通接続された２本の配管Ｈ、Ｈにお
いて、この継ぎ輪Ｊの管軸芯方向両端部の受口管部１の
各々に挿入接続された、両配管Ｈ、Ｈの各々の挿入管部
２に、ゴム製の環状の弾性シール材３と、該弾性シール
材３を挿入管部２の開口端側に向かって管軸芯Ｐ方向か
ら押圧可能なシール押面４Ａを備えた押輪４とを外装す
るとともに、該両押輪４同士を締結し、かつ、両弾性シ
ール材３を圧縮させる側、つまり、受口管部１の管軸芯
Ｐ方向両端面１Ｃ側に、両押輪４を管軸芯Ｐ方向に沿っ
て近接方向に強制移動させる締結機構５を設けて構成さ
れている。[Third Embodiment] FIGS. 5 and 6 (a) and (b)
Shows a third embodiment of the seal structure for a pipe joint of the present invention,
In the two pipes H, H connected in communication via the joint ring J, the two pipes H, H inserted into and connected to the respective socket pipe portions 1 at both ends in the pipe axis direction of the joint ring J are connected. A rubber annular elastic seal member 3 and a seal pushing surface 4A capable of pressing the elastic seal member 3 toward the opening end side of the insert tube unit 2 from the tube axis P direction are provided in each of the insert tube units 2. The pressing wheel 4 provided is exteriorly mounted, the pressing wheels 4 are fastened to each other, and the elastic sealing members 3 are compressed, that is, on both end surfaces 1C of the receiving tube portion 1 in the pipe axis P direction. A fastening mechanism 5 for forcibly moving the two push wheels 4 in the proximity direction along the tube axis P direction is provided.
【００２３】前記両押輪４の軸芯Ｑ方向における継ぎ輪
Ｊ側の一側面の各々には、両弾性シール材３を、受口管
部１の管軸芯Ｐ方向両端面１Ｃ側に強制移動させ状態
で、両弾性シール材３の各々の管径方向外方側を囲繞す
る環状壁部４Ｃが一体形成されているとともに、前記両
押輪４の内周面は、シール押面４Ａ側ほど内径が小とな
るテーパー面に構成されていて、該押輪４の内周面の最
小内径が挿入管部２の外径よりも大に構成されている。The elastic seal members 3 are forcibly moved to the side faces 1C of the receiving tube portion 1 in the direction of the axis P of the receiving tube portion 1 on each of the side surfaces on the side of the joint ring J in the direction of the axis Q of the push wheels 4. In this state, the annular wall portions 4C surrounding the pipe radial direction outer sides of both elastic seal members 3 are integrally formed, and the inner peripheral surfaces of the both push wheels 4 have inner diameters closer to the seal pressing surface 4A side. Is formed to be a small tapered surface, and the minimum inner diameter of the inner peripheral surface of the push ring 4 is larger than the outer diameter of the insertion tube portion 2.
【００２４】前記弾性シール材３には、前記締結機構５
による押輪４の弾性シール材３側への移動に連れて、挿
入管部２の管軸芯Ｐと押輪４の軸芯Ｑとが合致するよう
に該押輪４を管径方向に移動案内する、軸芯方向遊端側
ほど外径が小なる傾斜ガイド面６Ａを備えたガイド部６
が、弾性シール材３の軸芯方向両側面のうち、前記押輪
４のシール押面４Ａと相対向する一側面の全周に亘っ
て、前記弾性シール材３と同芯状に一体形成されてい
て、挿入管部２に外装した状態では、ガイド部６の基端
側の最大外径が、押輪４の内周面の最小内径とほぼ同一
寸法となるように構成されている。The elastic seal member 3 is provided with the fastening mechanism 5
Along with the movement of the push wheel 4 toward the elastic seal member 3 side by the, the push wheel 4 is guided in the pipe radial direction so that the tube axis P of the insertion tube portion 2 and the axis Q of the push wheel 4 match. A guide portion 6 having an inclined guide surface 6A having a smaller outer diameter toward the free end side in the axial direction.
Of the elastic seal material 3 on both sides in the axial direction, the elastic seal material 3 is integrally formed concentrically with the elastic seal material 3 over the entire circumference of one side surface facing the seal pressing surface 4A of the pressing wheel 4. Thus, in the state of being sheathed in the insertion tube portion 2, the maximum outer diameter on the proximal end side of the guide portion 6 is configured to be substantially the same as the minimum inner diameter of the inner peripheral surface of the push ring 4.
【００２５】前記挿入管部２の外径の半径Ｒ１と、挿入
管部２に外装する前のガイド部６の内周面の遊端側の半
径Ｒ２と、挿入管部２に外装する前の弾性シール材３の
最小内径の半径Ｒ３とは、 Ｒ１＞Ｒ２＞Ｒ３ の関係に構成されているとともに、挿入管部２に外装す
る前のガイド部６の内周面の基端側の半径は、挿入管部
２に外装する前の弾性シール材３の内周面の半径Ｒ３と
同一寸法に構成されていて、前記挿入管部２に外装する
前のガイド部３の内周面が、弾性シール材３側ほど小径
となるテーパー面に形成されている。詳しくは、前記挿
入管部２に外装する前のガイド部６の内周面の遊端側の
半径Ｒ２が、挿入管部２の外径の半径Ｒ１の９９％の寸
法に構成されているとともに、挿入管部２に外装する前
の弾性シール材３の内周面の半径Ｒ３が、挿入管部２の
外径の半径Ｒ１の９７〜９８％の寸法に構成されてい
る。従って、前記挿入管部２の外周面に装着した状態で
は弾性シール材３の内周面のみならず、ガイド部６の内
周面が挿入管部２の外周面に密着する。しかも、前記ガ
イド部６の内周面が前記テーパー面に形成されているの
で、挿入管部２に対して弾性シール材３よりもガイド部
６のほうが外装し易く、ガイド部６を先に挿入管部２に
外装することにより、該ガイド部６を弾性シール材３の
外装案内部として利用することができる。尚、前記挿入
管部２の外径の半径Ｒ１と、挿入管部２に外装する前の
ガイド部６の内周面の遊端側の半径Ｒ２と、挿入管部２
に外装する前の弾性シール材３の内周面の半径Ｒ３と
が、Ｒ１＞Ｒ２＞Ｒ３の関係に構成されているならば、
上記のパーセントで示す寸法関係は適宜変更が可能であ
る。The radius R1 of the outer diameter of the insertion tube portion 2, the radius R2 of the free end side of the inner peripheral surface of the guide portion 6 before the insertion tube portion 2 is covered, and the radius R2 before the insertion tube portion 2 is covered. The radius R3 of the minimum inner diameter of the elastic sealing material 3 is configured to satisfy the relation of R1>R2> R3, and the radius of the inner peripheral surface of the guide portion 6 before the sheathing on the insertion tube portion 2 is the proximal end side radius. , The radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion pipe portion 2 is the same, and the inner peripheral surface of the guide portion 3 before being sheathed in the insertion pipe portion 2 is elastic. It is formed in a tapered surface having a smaller diameter on the sealing material 3 side. Specifically, the radius R2 on the free end side of the inner peripheral surface of the guide portion 6 before being sheathed in the insertion pipe portion 2 is configured to be 99% of the radius R1 of the outer diameter of the insertion pipe portion 2. The radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion tube portion 2 is configured to be 97 to 98% of the radius R1 of the outer diameter of the insertion tube portion 2. Therefore, when mounted on the outer peripheral surface of the insertion tube portion 2, not only the inner peripheral surface of the elastic sealing material 3 but also the inner peripheral surface of the guide portion 6 is in close contact with the outer peripheral surface of the insertion tube portion 2. Moreover, since the inner peripheral surface of the guide portion 6 is formed as the tapered surface, the guide portion 6 is easier to be mounted on the insertion pipe portion 2 than the elastic sealing material 3, and the guide portion 6 is inserted first. By covering the pipe portion 2, the guide portion 6 can be used as an outer guide portion for the elastic sealing material 3. It should be noted that the radius R1 of the outer diameter of the insertion tube portion 2, the radius R2 of the inner peripheral surface of the guide portion 6 before the exterior of the insertion tube portion 2 on the free end side, and the insertion tube portion 2
If the radius R3 of the inner peripheral surface of the elastic sealing material 3 before exterior packaging is configured to satisfy the relationship of R1>R2> R3,
The dimensional relationship shown in the above percentage can be changed appropriately.
【００２６】尚、前記弾性シール材３及びガイド部６
を、挿入管部２の外周面に対して外装し易くするよう
に、予め前記挿入管部２の外周面には滑剤としての植物
性セルロースが塗布されている。The elastic seal material 3 and the guide portion 6 are also provided.
In order to make it easier to coat the outer peripheral surface of the insertion tube portion 2, vegetable cellulose as a lubricant is previously applied to the outer peripheral surface of the insertion tube portion 2.
【００２７】前記締結機構５は、両押輪４の管周方向複
数箇所に等間隔を隔てて形成されたフランジ４Ａに貫通
形成されたボルト挿通孔４Ｂに亘って挿通された複数本
の頭付き連結ボルト７と、該連結ボルト７の先端側に螺
合されるナット８とから構成されている。The fastening mechanism 5 has a plurality of headed connections which are inserted through bolt insertion holes 4B formed through flanges 4A formed at a plurality of positions in the circumferential direction of both push wheels 4 at equal intervals. It is composed of a bolt 7 and a nut 8 screwed on the tip side of the connecting bolt 7.
【００２８】上記の構成によれば、前記押輪４を、挿入
管部２の外周面に外装された弾性シール材３に一体形成
されたガイド部６の傾斜ガイド面６Ａに吊下げ状態で外
装するとともに、両押輪４のフランジ４Ａのボルト挿通
孔４Ｂに亘って、前記締結機構５を構成する連結ボルト
７を挿通してナット８を締付け操作すると、両押輪４の
内周面の最小内径部分がガイド部６の傾斜ガイド面に摺
接しながら弾性シール材３側に強制移動され、この移動
に連れて、押輪４が管径方向の上方外方に向かって移動
案内される。そして、前記各押輪４のシール押面４Ａと
弾性シール材３とが接当する状態では、該押輪４の内周
面の最小内径部分がガイド部６の傾斜ガイド面６Ａの基
端部に外嵌して、挿入管部２の管軸芯Ｐと各押輪４の軸
芯Ｑとが合致する。更に、前記ナット８を締付け操作す
ると、前記両弾性シール材３は両押輪４のシール押面４
Ａに押圧されて、該両押輪４と共に各受口管部１側に管
軸芯Ｐ方向に沿って強制移動され、両弾性シール材３
は、各受口管部１の管軸芯Ｐ方向両端面１Ｃに強制的に
押圧圧縮されて、弾性シール材３が、受口管部１の端面
１Ｃと挿入管部２の外周面とに密着して、受口管部１の
内周面と挿入管部２の外周面との間に形成される環状間
隙Ｓがこの弾性シール材３により閉塞される。According to the above construction, the push ring 4 is mounted in the suspended state on the inclined guide surface 6A of the guide portion 6 integrally formed with the elastic sealing material 3 which is mounted on the outer peripheral surface of the insertion tube portion 2. At the same time, when the connecting bolt 7 constituting the fastening mechanism 5 is inserted through the bolt insertion hole 4B of the flange 4A of the two push wheels 4 and the nut 8 is tightened, the minimum inner diameter portion of the inner peripheral surface of the both push wheels 4 becomes smaller. While being slidably in contact with the inclined guide surface of the guide portion 6, it is forcibly moved to the elastic seal material 3 side, and along with this movement, the push ring 4 is guided to move upward in the pipe radial direction. Then, in the state where the seal pushing surface 4A of each push wheel 4 and the elastic sealing material 3 are in contact with each other, the smallest inner diameter portion of the inner peripheral surface of the push wheel 4 is outside the base end portion of the inclined guide surface 6A of the guide portion 6. When fitted, the tube axis P of the insertion tube portion 2 and the axis Q of each push ring 4 match. Further, when the nut 8 is tightened, both the elastic seal members 3 are pushed by the seal pressing surfaces 4 of the two push wheels 4.
A is pressed by A and is forcibly moved along with the push wheels 4 toward the respective receiving tube portions 1 side along the tube axis P direction.
Is forcibly pressed and compressed by both end surfaces 1C of the respective receiving tube portions 1 in the direction of the tube axis P, so that the elastic sealing material 3 is applied to the end surface 1C of the receiving tube portion 1 and the outer peripheral surface of the insertion tube portion 2. The elastic sealing material 3 closes the annular gap S formed between the inner peripheral surface of the receiving tube portion 1 and the outer peripheral surface of the insertion tube portion 2 in close contact with each other.
【００２９】〔第４実施形態〕図７は、前記第３実施形
態の弾性シール材３の別実施形態を示し、前記ガイド部
６が、弾性シール材３の軸芯方向両側面の各々に設けら
れていてもよい。この場合、一方のガイド部６の傾斜ガ
イド面６Ａが、前記締結機構５による押輪４の弾性シー
ル材３側への移動に連れて、該押輪４を管径方向に移動
案内し、挿入管部２の管軸芯Ｐと押輪４の軸芯Ｑとを合
致させるとともに、挿入管部２の外周面と受口管部１の
内周面との間の隙間に差し込まれた他方のガイド部６の
傾斜ガイド面６Ａが、前記押輪４による弾性シール材３
の前記継ぎ輪Ｊの受口管部１側への強制移動に連れて、
該受口管部１の最小内径部分に摺接しながら、この受口
管部１を管径方向に移動案内し、挿入管部２の管軸芯Ｐ
と継ぎ輪Ｊの受口管部１の管軸芯とを合致させる。[Fourth Embodiment] FIG. 7 shows another embodiment of the elastic seal material 3 of the third embodiment, in which the guide portions 6 are provided on both side surfaces of the elastic seal material 3 in the axial direction. It may be. In this case, the inclined guide surface 6A of one guide portion 6 guides the push ring 4 in the pipe radial direction as the push mechanism 4 moves toward the elastic seal material 3 side by the fastening mechanism 5, and the insertion pipe portion The tube core P of 2 and the shaft core Q of the push ring 4 are made to coincide with each other, and the other guide portion 6 inserted into the gap between the outer peripheral surface of the insertion pipe portion 2 and the inner peripheral surface of the receiving pipe portion 1 The inclined guide surface 6A of the
In accordance with the forced movement of the joint ring J toward the receiving pipe section 1 side,
While slidingly contacting the smallest inner diameter portion of the receiving pipe portion 1, the receiving pipe portion 1 is moved and guided in the pipe radial direction, and a pipe axis P of the insertion pipe portion 2 is formed.
And the pipe axis of the socket pipe portion 1 of the joint ring J are matched.
【００３０】〔第５実施形態〕図８は前記第１実施形態
の別実施形態を示し、前記押輪４の軸芯Ｑ方向における
弾性シール材３存在側とは反対側の一側面に、挿入管部
２の外周面に対して管径方向から食い込み可能な食い込
み刃１０Ａを備えた係止体１０を内装保持する保持枠１
１が一体形成されているとともに、該保持枠１１に係止
体１０を食い込み側に強制移動させて、該係止体１０の
食い込み刃１０Ａを挿入管部２の外周面に食い込ませる
移動手段の一例である押圧ボルト１２が螺合設置されて
いる。そして、前記挿入管部２の管軸芯Ｐ方向に沿う前
記ガイド部６の長さが、押輪４により弾性シール材３が
シール材嵌入部９に押し込まれた状態において、係止体
１０の食い込み刃１０Ａと挿入管部２の外周面との間
に、該ガイド部６の一部が介在させることが可能な寸法
に構成されている。その他の構成は、前記第１実施形態
と同様に構成されている。[Fifth Embodiment] FIG. 8 shows another embodiment of the first embodiment, in which the insertion tube is provided on one side opposite to the side where the elastic seal material 3 is present in the axial Q direction of the push ring 4. A holding frame 1 for internally holding a locking body 10 having a biting blade 10A capable of biting into the outer peripheral surface of the portion 2 from the pipe radial direction.
1 is integrally formed, and a moving means for forcibly moving the locking body 10 to the holding frame 11 toward the biting side so that the biting blade 10A of the locking body 10 bites into the outer peripheral surface of the insertion tube portion 2. A pressure bolt 12, which is an example, is screwed and installed. The length of the guide portion 6 along the tube axis P direction of the insertion tube portion 2 is set so that the locking body 10 bites when the elastic seal material 3 is pushed into the seal material fitting portion 9 by the push ring 4. The guide portion 6 is dimensioned such that a part of the guide portion 6 can be interposed between the blade 10A and the outer peripheral surface of the insertion tube portion 2. Other configurations are the same as those in the first embodiment.
【００３１】更に、上記の構成によれば、前記連結機構
５による押輪４の移動により弾性シール材３がシール材
嵌入部９に押し込まれたのち、押圧ボルト１２を螺合締
付けすると、該押圧ボルト１２により係止体１０が挿入
管部２の外周面側に押し付けられて食い込み刃１０Ａ
が、ガイド部６の一部を刺し通した状態で挿入管部２の
外周面に食い込み、押輪４の管軸芯Ｐ方向への移動が阻
止される。この状態では、前記係止体１０の食い込み刃
１０Ａがガイド部６の一部を刺し通した状態で挿入管部
２の外周面に食い込むので、例え、この係止体１０の食
い込み刃１０Ａの食い込みによって挿入管部２の外周面
に施されている腐食防止塗料が剥がれても、この部分を
ガイド部６の一部を利用して密封することができる。Further, according to the above construction, when the elastic seal member 3 is pushed into the seal member fitting portion 9 by the movement of the push ring 4 by the connecting mechanism 5, the press bolt 12 is screwed and tightened. The locking body 10 is pressed against the outer peripheral surface side of the insertion tube portion 2 by 12 and the biting blade 10A
However, it bites into the outer peripheral surface of the insertion tube portion 2 while piercing a part of the guide portion 6, and the movement of the push ring 4 in the tube axis P direction is blocked. In this state, the biting blade 10A of the locking body 10 bites into the outer peripheral surface of the insertion tube portion 2 while piercing a part of the guide portion 6, so that, for example, the biting blade 10A of the locking body 10 bites Even if the corrosion prevention paint applied to the outer peripheral surface of the insertion tube portion 2 is peeled off by this, this portion can be sealed by using a part of the guide portion 6.
【００３２】尚、前記第２〜第４実施形態の押輪４に、
当該実施形態の係止体１０及び移動手段１２を設け、か
つ、係止体１０と挿入管部２の外周面との間に、前記ガ
イド部６の一部を介在させて実施してもよい。In addition, in the push ring 4 of the second to fourth embodiments,
The locking body 10 and the moving means 12 of the embodiment may be provided, and a part of the guide portion 6 may be interposed between the locking body 10 and the outer peripheral surface of the insertion tube portion 2. .
【００３３】〔第６実施形態〕前記第１〜第５実施形態
では、前記挿入管部２の外径の半径Ｒ１と、挿入管部２
に外装する前のガイド部６の内周面の遊端側の半径Ｒ２
と、挿入管部２に外装する前の弾性シール材３の内周面
（又は、弾性シール材３の基部３Ａの内周面）或いは最
小内径の半径Ｒ３とが、 Ｒ１＞Ｒ２＞Ｒ３ の関係に構成されているが、この関係に限定されるもの
ではなく、例えば、第１実施形態の弾性シール材３及び
ガイド部６において、挿入管部２の外径の半径Ｒ１と、
挿入管部２に外装する前のガイド部６の内周面の遊端側
の半径Ｒ２と、挿入管部２に外装する前の弾性シール材
３の内周面の半径Ｒ３とが、 Ｒ１＝Ｒ２＞Ｒ３ の関係に構成されていてもよい。[Sixth Embodiment] In the first to fifth embodiments, the radius R1 of the outer diameter of the insertion tube portion 2 and the insertion tube portion 2
Radius R2 on the free end side of the inner peripheral surface of the guide portion 6 before exterior mounting
And the inner peripheral surface of the elastic seal material 3 (or the inner peripheral surface of the base portion 3A of the elastic seal material 3) or the radius R3 of the minimum inner diameter before the exterior of the insertion pipe portion 2 is R1>R2> R3. However, the present invention is not limited to this relationship. For example, in the elastic seal material 3 and the guide portion 6 of the first embodiment, the radius R1 of the outer diameter of the insertion tube portion 2 and
The radius R2 on the free end side of the inner peripheral surface of the guide portion 6 before being sheathed in the insertion pipe portion 2 and the radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion pipe portion 2 are R1 = It may be configured such that R2> R3.
【００３４】〔第７実施形態〕図９に示すように、第１
実施形態の弾性シール材３及びガイド部６において、挿
入管部２の外径の半径Ｒ１と、挿入管部２に外装する前
のガイド部６の内周面の遊端側の半径Ｒ２と、挿入管部
２に外装する前の弾性シール材３の内周面の半径Ｒ３と
が、 Ｒ１＞Ｒ２＝Ｒ３ の関係に構成されていてもよい。つまり、挿入管部２に
外装する前のガイド部６の内周面が、テーパー面に形成
されていないものであってもよい。[Seventh Embodiment] As shown in FIG.
In the elastic seal member 3 and the guide portion 6 of the embodiment, the radius R1 of the outer diameter of the insertion tube portion 2 and the radius R2 of the inner peripheral surface of the guide portion 6 before the insertion tube portion 2 are fitted to the free end side, The radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion tube portion 2 may be configured to satisfy the relationship of R1> R2 = R3. That is, the inner peripheral surface of the guide portion 6 before being sheathed in the insertion tube portion 2 may not be formed into a tapered surface.
【００３５】〔第８実施形態〕図１０に示すように、第
１実施形態の弾性シール材３及びガイド部６において、
挿入管部２の外径の半径Ｒ１と、挿入管部２に外装する
前のガイド部６の内周面の軸芯方向全長に亘る半径Ｒ２
と、挿入管部２に外装する前の弾性シール材３の内周面
の半径Ｒ３とが、 Ｒ１＞Ｒ２＞Ｒ３ の関係に構成されていてもよい。[Eighth Embodiment] As shown in FIG. 10, in the elastic seal member 3 and the guide portion 6 of the first embodiment,
The radius R1 of the outer diameter of the insertion tube portion 2 and the radius R2 of the inner peripheral surface of the guide portion 6 before being sheathed in the insertion tube portion 2 over the entire axial length.
And the radius R3 of the inner peripheral surface of the elastic sealing material 3 before being sheathed in the insertion tube portion 2 may be configured to satisfy the relationship of R1>R2> R3.
【００３６】〔第９実施形態〕図１１は、前記第１実施
形態のガイド部６の別実施形態を示し、ガイド部３は、
円周方向の一点が軸芯方向で最大突出長さとなり、該一
点と１８０度位相の異なる部位の突出長さが０又は略０
となるように傾斜カットされていてもよい。尚、当該実
施形態では、挿入管部２の外周面に対してガイド部６
が、その最も軸芯方向に突出する部位を上部として外嵌
装着されるとともに、この姿勢では、図１１の(イ) に示
すように、ガイド部６の側面視形状が略直角三角形状を
呈する。その他の構成は前記第１実施形態と同様に構成
されている。[Ninth Embodiment] FIG. 11 shows another embodiment of the guide portion 6 of the first embodiment.
One point in the circumferential direction has the maximum protrusion length in the axial direction, and the protrusion length of a portion having a phase difference of 180 degrees from the one point is 0 or substantially 0.
The slope may be cut so that In the embodiment, the guide portion 6 is attached to the outer peripheral surface of the insertion tube portion 2.
Is externally fitted and mounted with the most projecting portion in the axial direction as the upper part, and in this posture, the side view shape of the guide portion 6 is a substantially right triangle as shown in FIG. . Other configurations are the same as those of the first embodiment.
【００３７】〔第１０実施形態〕図１２は、前記第１実
施形態のガイド部６の別実施形態を示し、ガイド部６
が、弾性シール材３の円周方向に沿う一箇所のほぼ半円
相当部分に一体形成されているとともに、このガイド部
６の円周方向中間部が最も軸芯方向に突出するように傾
斜カットされていてもよい。尚、当該実施形態では、挿
入管部２の外周面に対してガイド部６が、その前記円周
方向中間部を上部として外嵌装着されるとともに、この
姿勢では、図１２の(イ) に示すように、ガイド部６の側
面視形状が略直角三角形状を呈する。その他の構成は前
記第１実施形態と同様に構成されている。[Tenth Embodiment] FIG. 12 shows another embodiment of the guide portion 6 of the first embodiment.
Is integrally formed on one portion of the elastic seal material 3 along the circumferential direction corresponding to a substantially semicircle, and is cut obliquely so that the circumferential intermediate portion of the guide portion 6 projects most in the axial direction. It may have been done. In this embodiment, the guide portion 6 is externally fitted and attached to the outer peripheral surface of the insertion tube portion 2 with the circumferentially intermediate portion thereof as the upper portion. As shown, the side view of the guide portion 6 has a substantially right triangle shape. Other configurations are the same as those of the first embodiment.
【００３８】〔第１１実施形態〕図１３は、前記第１実
施形態のガイド部３の別実施形態を示し、ガイド部６
が、弾性シール材３の円周方向に沿い、管径方向で相対
向する二箇所に一体形成されているとともに、両ガイド
部６の円周方向中間部の各々が最も軸芯方向に突出する
ように傾斜カットされていてもよい。尚、当該実施形態
では、挿入管部２の外周面に対して前記両ガイド部６の
何れか一方が、その円周方向中間部を上部として外嵌装
着されるとともに、この姿勢では、図１３の(イ) に示す
ように、両ガイド部６の側面視形状が対照な略直角三角
形状を呈する。その他の構成は前記第１実施形態と同様
に構成されている。[Eleventh Embodiment] FIG. 13 shows another embodiment of the guide portion 3 of the first embodiment.
Are integrally formed at two locations facing each other in the pipe radial direction along the circumferential direction of the elastic seal material 3, and each of the circumferential intermediate portions of both guide portions 6 projects most in the axial direction. It may be slope-cut as described above. In this embodiment, one of the two guide portions 6 is externally fitted and attached to the outer peripheral surface of the insertion tube portion 2 with the circumferential intermediate portion thereof as the upper portion. As shown in (a), the side view shapes of both guide portions 6 are substantially right-angled triangular shapes. Other configurations are the same as those of the first embodiment.
【００３９】〔第１２実施形態〕図１４は、前記第１実
施形態のガイド部６の別実施形態を示し、ガイド部６の
遊端側に、その円周方向に沿って連続するジグザグの切
り欠き部を形成してもよい。その他の構成は前記第１実
施形態と同様に構成されている。[Twelfth Embodiment] FIG. 14 shows another embodiment of the guide portion 6 of the first embodiment, in which zigzag cutting is continuously performed along the circumferential direction on the free end side of the guide portion 6. You may form a notch. Other configurations are the same as those of the first embodiment.
【００４０】〔第１３実施形態〕図１５は、前記第１実
施形態のガイド部６の別実施形態を示し、複数のガイド
部６が、弾性シール材３の円周方向に沿って等間隔を隔
てて一体形成されていてもよい。その他の構成は前記第
１実施形態と同様に構成されている。[Thirteenth Embodiment] FIG. 15 shows another embodiment of the guide portion 6 of the first embodiment, in which a plurality of guide portions 6 are arranged at equal intervals along the circumferential direction of the elastic sealing material 3. They may be formed integrally with each other. Other configurations are the same as those of the first embodiment.
【００４１】〔第１４実施形態〕図１６は、前記第１実
施形態のガイド部６の別実施形態を示し、ガイド部６
に、前記挿入管部２の外周面に対する滑剤である植物セ
ルロースを充填可能な滑剤溜りとしての複数の貫通孔１
３が、このガイド部６の円周方向に沿って形成されてい
てもよい。その他の構成は前記第１実施形態と同様に構
成されている。[Fourteenth Embodiment] FIG. 16 shows another embodiment of the guide portion 6 of the first embodiment.
In addition, a plurality of through holes 1 as a lubricant reservoir capable of filling the outer peripheral surface of the insertion tube portion 2 with a plant cellulose as a lubricant.
3 may be formed along the circumferential direction of the guide portion 6. Other configurations are the same as those of the first embodiment.
【００４２】〔第１５実施形態〕図１７は、前記第１実
施形態のガイド部３の別実施形態を示し、ガイド部６の
傾斜ガイド面６Ａに、軸芯方向に沿う複数本の溝１４
が、この傾斜ガイド面６Ａの円周方向に沿って形成され
ていてもよい。その他の構成は前記第１実施形態と同様
に構成されている。[Fifteenth Embodiment] FIG. 17 shows another embodiment of the guide portion 3 of the first embodiment. A plurality of grooves 14 along the axial direction are formed on the inclined guide surface 6A of the guide portion 6.
However, it may be formed along the circumferential direction of the inclined guide surface 6A. Other configurations are the same as those of the first embodiment.
【００４３】〔その他の実施形態〕 前記締結機構５は連結ボルト７とナット８とから構
成されているものに限定されるものではなく、ターンバ
ックルを備えた連結ボルトと固定ナットとから締結機構
５を構成してもよく、また、押輪４と受口管部１とに亘
って、或いは、一対の押輪４同士とに亘って掛け渡され
た伸縮自在な連結ロッドの中間部に、該連結ロッドを伸
縮操作するジャッキ装置を備えた連結具をもって締結機
構５を構成してもよく、適宜変更が可能である。 前記第３実施形態の継ぎ輪Ｊはエルボ状に形成され
ているのもであってもよい。 前記弾性シール材３の形状は、図示した形状のもの
に限定されるものではなく、受口管部１の形状に合わせ
て適宜変更されるものである。Other Embodiments The fastening mechanism 5 is not limited to one including the connecting bolt 7 and the nut 8, and the fastening mechanism 5 includes a connecting bolt having a turnbuckle and a fixed nut. The connecting rod may be formed at the intermediate portion of the extendable connecting rod that is stretched over the push wheel 4 and the socket pipe portion 1 or between the pair of push wheels 4. The fastening mechanism 5 may be configured by a connector equipped with a jack device that expands and contracts, and can be appropriately changed. The joint ring J of the third embodiment may be formed in an elbow shape. The shape of the elastic sealing material 3 is not limited to the illustrated shape, but may be changed appropriately according to the shape of the receiving tube portion 1.
【００４４】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
【図１】(イ) は第１実施形態の継手のシール構造の外装
状態を示す断面図 (ロ) は第１実施形態の継手のシール構造のシール状態を
示す断面図1A is a cross-sectional view showing an exterior state of a joint seal structure according to a first embodiment. FIG. 1B is a cross-sectional view showing a seal state of a joint seal structure according to a first embodiment.
【図２】第１実施形態の弾性シール材を示し、(イ) は側
面図、(ロ) は断面図2A and 2B show the elastic sealing material according to the first embodiment, in which (A) is a side view and (B) is a sectional view.
【図３】第２実施形態の継手のシール構造のシール状態
を示す断面図FIG. 3 is a cross-sectional view showing a sealed state of a seal structure for a joint according to a second embodiment.
【図４】第２実施形態の弾性シール材を示し、(イ) は側
面図、(ロ) は断面図FIG. 4 shows an elastic seal material according to a second embodiment, (a) is a side view, and (b) is a sectional view.
【図５】第３実施形態の継手のシール構造のシール状態
を示す断面図FIG. 5 is a cross-sectional view showing a sealed state of a seal structure for a joint according to a third embodiment.
【図６】第３実施形態の弾性シール材を示し、(イ) は側
面図、(ロ) は断面図FIG. 6 shows an elastic seal member according to a third embodiment, (a) is a side view, and (b) is a sectional view.
【図７】第４実施形態の継手のシール構造のシール状態
を示す部分断面図FIG. 7 is a partial cross-sectional view showing a sealed state of a seal structure for a joint according to a fourth embodiment.
【図８】第５実施形態の継手のシール構造のシール状態
を示す部分断面図FIG. 8 is a partial cross-sectional view showing a sealed state of the seal structure for a joint according to the fifth embodiment.
【図９】第７実施形態の弾性シール材の断面図FIG. 9 is a sectional view of an elastic sealing material according to a seventh embodiment.
【図１０】第８実施形態の弾性シール材の断面図FIG. 10 is a sectional view of an elastic sealing material according to an eighth embodiment.
【図１１】第９実施形態の弾性シール材を示し、(イ) は
側面図、(ロ) は断面図FIG. 11 shows an elastic sealing material of a ninth embodiment, (a) is a side view, and (b) is a sectional view.
【図１２】第１０実施形態の弾性シール材を示し、(イ)
は側面図、(ロ) は断面図FIG. 12 shows an elastic sealing material of a tenth embodiment,
Is a side view, (b) is a sectional view
【図１３】第１１実施形態の弾性シール材を示し、(イ)
は側面図、(ロ) は断面図FIG. 13 shows an elastic seal material according to an eleventh embodiment, (a)
Is a side view, (b) is a sectional view
【図１４】第１２実施形態の弾性シール材を示し、(イ)
は側面図、(ロ) は断面図FIG. 14 shows an elastic seal material according to a twelfth embodiment, (a)
Is a side view, (b) is a sectional view
【図１５】第１３実施形態の弾性シール材を示し、(イ)
は側面図、(ロ) は断面図FIG. 15 shows an elastic sealing material according to a thirteenth embodiment, (a)
Is a side view, (b) is a sectional view
【図１６】第１４実施形態の弾性シール材を示し、(イ)
は側面図、(ロ) は断面図FIG. 16 shows an elastic seal material according to a fourteenth embodiment, (a)
Is a side view, (b) is a sectional view
【図１７】第１５実施形態の弾性シール材を示し、(イ)
は側面図、(ロ) は断面図FIG. 17 shows an elastic seal material according to a fifteenth embodiment of the present invention.
Is a side view, (b) is a sectional view
１ 受口管部 ２ 挿入管部 ３ 弾性シール材 ４ 押輪 ４Ａ シール押面 ５ 締結機構 ６ ガイド部 ６Ａ 傾斜ガイド面 １０ 係止体 １２ 移動手段 １３ 滑剤溜り Ｐ 管軸芯 Ｑ 軸芯 DESCRIPTION OF SYMBOLS 1 Receptacle pipe part 2 Insertion pipe part 3 Elastic sealing material 4 Push ring 4A Seal pressing surface 5 Fastening mechanism 6 Guide part 6A Inclined guide surface 10 Locking body 12 Moving means 13 Lubricant reservoir P Pipe shaft core Q Shaft core
───────────────────────────────────────────────────── フロントページの続き (72)発明者 白川 幸一 兵庫県三田市すずかけ台１―32―１―1312 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Koichi Shirakawa 1-32-1-1312 Suzukakedai, Sanda City, Hyogo Prefecture
Claims (7)
部（２）に、前記受口管部（１）の内周面と挿入管部
（２）の外周面との間の環状間隙（Ｓ）を閉塞可能な環
状の弾性シール材（３）と、該弾性シール材（３）を管
軸芯（Ｐ）方向から押圧可能なシール押面（４Ａ）を備
え、かつ、最小内径が挿入管部（２）の外径よりも大に
構成される押輪（４）とを外装するとともに、前記弾性
シール材（３）を圧縮させる側に、前記押輪（４）を管
軸芯（Ｐ）方向に沿って強制移動させる締結機構（５）
を設けてある管継手のシール構造であって、 前記弾性シール材（３）に、前記締結機構（５）による
押輪（４）の弾性シール材（３）側への移動に連れて、
前記挿入管部（２）の管軸芯（Ｐ）と押輪（４）の軸芯
（Ｑ）とが合致するように該押輪（４）を管径方向に移
動案内する傾斜ガイド面（６Ａ）を備えたガイド部
（６）が一体形成されている管継手のシール構造。1. An insertion pipe portion (2) inserted into and connected to a reception pipe portion (1), wherein an inner peripheral surface of the reception pipe portion (1) and an outer peripheral surface of the insertion pipe portion (2). An annular elastic seal material (3) capable of closing the annular gap (S), and a seal pressing surface (4A) capable of pressing the elastic seal material (3) from the tube axis core (P) direction, and The push ring (4), which has a minimum inner diameter larger than the outer diameter of the insertion pipe portion (2), is installed on the outer side, and the push ring (4) is provided on the side where the elastic seal material (3) is compressed. Fastening mechanism (5) forcibly moving along the core (P) direction
In the seal structure of the pipe joint, the elastic seal material (3) is moved to the elastic seal material (3) side by the fastening mechanism (5) by the fastening mechanism (5).
An inclined guide surface (6A) for moving and guiding the push ring (4) in the pipe radial direction so that the pipe axis (P) of the insertion tube part (2) and the axis center (Q) of the push wheel (4) match. A sealing structure for a pipe joint, in which a guide portion (6) having the above is integrally formed.
材（３）の軸芯方向一側面の全周に亘って一体形成され
ている請求項１記載の管継手のシール構造。2. The seal structure for a pipe joint according to claim 1, wherein the guide portion (6) is integrally formed over the entire circumference of one side surface in the axial direction of the elastic seal material (3).
材（３）の軸芯方向一側面の周方向の一箇所又は周方向
の複数箇所に設けられている請求項１記載の管継手のシ
ール構造。3. The pipe joint according to claim 1, wherein the guide portion (6) is provided at one circumferential position or at a plurality of circumferential positions on one axial side surface of the elastic sealing material (3). Seal structure.
材（３）の軸芯方向両側面の各々に設けられている請求
項１記載の管継手のシール構造。4. The seal structure for a pipe joint according to claim 1, wherein the guide portion (6) is provided on each of both side surfaces in the axial direction of the elastic seal material (3).
と、挿入管部（２）に外装する前の前記ガイド部（６）
の内周面の遊端側の半径Ｒ２と、挿入管部（２）に外装
する前の前記弾性シール材（３）の内周面の半径Ｒ３と
が、 Ｒ１＞Ｒ２＞Ｒ３、又は、Ｒ１＝Ｒ２＞Ｒ３ の関係に構成されているとともに、前記挿入管部（２）
に外装する前の前記ガイド部（６）の内周面が、前記弾
性シール材（３）側ほど小径となるテーパー面に形成さ
れている請求項２記載の管継手のシール構造。5. A radius R1 of the outer diameter of the insertion tube portion (2)
And the guide part (6) before being mounted on the insertion tube part (2)
R2 on the free end side of the inner peripheral surface of R1 and the radius R3 of the inner peripheral surface of the elastic sealing material (3) before being sheathed in the insertion tube portion (2) are R1>R2> R3 or R1. = R2> R3, and the insertion tube portion (2)
The seal structure for a pipe joint according to claim 2, wherein an inner peripheral surface of the guide portion (6) before being externally sheathed is formed into a tapered surface having a smaller diameter on the elastic seal material (3) side.
（２）の外周面に対する滑剤を充填可能な滑剤溜り（１
３）が形成されている請求項１、２、３、４又は５記載
の管継手のシール構造。6. The lubricant reservoir (1) capable of filling the guide portion (6) with a lubricant for the outer peripheral surface of the insertion tube portion (2).
The seal structure for a pipe joint according to claim 1, 2, 3, 4, or 5, wherein 3) is formed.
（２）の外周面に対して管径方向から食い込み可能な係
止体（１０）と、該係止体（１０）を食い込み側に強制
移動させる移動手段（１２）とが設けられているととも
に、前記係止体（１０）と挿入管部（２）の外周面との
間に、前記ガイド部（６）の一部が介在されている請求
項１、２、３、４、５又は６記載の管継手のシール構
造。7. A locking body (10) capable of biting into the outer peripheral surface of the insertion tube portion (2) from the radial direction of the push ring (4), and the locking body (10). And a moving means (12) for forcibly moving the guide part (6) between the locking body (10) and the outer peripheral surface of the insertion tube part (2). The seal structure for a pipe joint according to claim 1, 2, 3, 4, 5 or 6, which is interposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7337314A JP2845260B2 (en) | 1995-12-25 | 1995-12-25 | Pipe fitting seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7337314A JP2845260B2 (en) | 1995-12-25 | 1995-12-25 | Pipe fitting seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09178067A true JPH09178067A (en) | 1997-07-11 |
| JP2845260B2 JP2845260B2 (en) | 1999-01-13 |
Family
ID=18307470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7337314A Expired - Lifetime JP2845260B2 (en) | 1995-12-25 | 1995-12-25 | Pipe fitting seal structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2845260B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285469A (en) * | 2006-04-19 | 2007-11-01 | Shin Caterpillar Mitsubishi Ltd | Pipe connecting device |
| KR100883800B1 (en) * | 2008-10-27 | 2009-02-17 | 현대주철산업 주식회사 | Pressing wheel assembly for conneting pipes |
| JP2018132108A (en) * | 2017-02-14 | 2018-08-23 | 株式会社水道技術開発機構 | Separation prevention device for fluid pipe |
| JP2019219001A (en) * | 2018-06-19 | 2019-12-26 | コスモ工機株式会社 | Leakage prevention tool and attachment method of the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62121489U (en) * | 1986-01-23 | 1987-08-01 | ||
| JPS63195188U (en) * | 1987-06-04 | 1988-12-15 |
-
1995
- 1995-12-25 JP JP7337314A patent/JP2845260B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62121489U (en) * | 1986-01-23 | 1987-08-01 | ||
| JPS63195188U (en) * | 1987-06-04 | 1988-12-15 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285469A (en) * | 2006-04-19 | 2007-11-01 | Shin Caterpillar Mitsubishi Ltd | Pipe connecting device |
| KR100883800B1 (en) * | 2008-10-27 | 2009-02-17 | 현대주철산업 주식회사 | Pressing wheel assembly for conneting pipes |
| JP2018132108A (en) * | 2017-02-14 | 2018-08-23 | 株式会社水道技術開発機構 | Separation prevention device for fluid pipe |
| JP2019219001A (en) * | 2018-06-19 | 2019-12-26 | コスモ工機株式会社 | Leakage prevention tool and attachment method of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2845260B2 (en) | 1999-01-13 |
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