JPH1054487A - Assembling method for expansion pipe coupling and expansion pipe coupling - Google Patents
Assembling method for expansion pipe coupling and expansion pipe couplingInfo
- Publication number
- JPH1054487A JPH1054487A JP9150751A JP15075197A JPH1054487A JP H1054487 A JPH1054487 A JP H1054487A JP 9150751 A JP9150751 A JP 9150751A JP 15075197 A JP15075197 A JP 15075197A JP H1054487 A JPH1054487 A JP H1054487A
- Authority
- JP
- Japan
- Prior art keywords
- ring member
- sleeve material
- peripheral surface
- outer sleeve
- groove
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、管どうしを伸縮自
在に接続する伸縮管継手であって、詳しくは、内側スリ
ーブ材と外側スリーブ材とが互いに軸芯方向に摺動自在
に嵌合されているとともに、前記両スリーブ材どうしの
軸芯方向への摺動移動範囲が、前記外側スリーブ材の内
周面に形成されている環状周溝の溝周面と、前記内側ス
リーブ材の外周面に装着固定されているリング部材との
接当で規制されている伸縮管継手の組立方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic pipe joint for connecting pipes so as to be extendable and contractible. More specifically, an inner sleeve material and an outer sleeve material are slidably fitted to each other in the axial direction. In addition, the sliding movement range of the two sleeve materials in the axial direction is the groove peripheral surface of the annular peripheral groove formed on the inner peripheral surface of the outer sleeve material, and the outer peripheral surface of the inner sleeve material. The present invention relates to a method for assembling an expansion joint which is restricted by contact with a ring member mounted and fixed to the expansion joint.
【０００２】[0002]
【従来の技術】冒記伸縮管継手を組立てるにあたり、外
側スリーブ材を環状周溝部分で軸芯方向に二分割して、
予め一方の分割スリーブ材を内側スリーブ材に外嵌して
おいた後、リング部材を凹入溝に嵌着固定し、次に他方
の分割スリーブ材を外嵌して、環状周溝内にリング部材
が位置する状態で両分割スリーブ材どうしを連結してい
た（例えば実開昭56−23786号公報参照。）2. Description of the Related Art At the time of assembling an expansion joint, an outer sleeve material is divided into two parts in an axial circumferential direction at an annular circumferential groove portion.
After one of the split sleeve members is fitted on the inner sleeve material in advance, the ring member is fitted and fixed in the recessed groove, and then the other split sleeve material is fitted on the inner sleeve material, and the ring member is fitted in the annular circumferential groove. In the state where the member is located, the two divided sleeve members are connected to each other (for example, see Japanese Utility Model Application Laid-Open No. 56-23786).
【０００３】[0003]
【発明が解決しようとする課題】この為、部品点数が増
大するだけでなく、分割スリーブ材どうしの連結部の構
造が複雑化し、しかも、長期使用のうちにその連結部の
シール性が低下し易く、メンテナンスに手間がかかる問
題があった。本発明は上記実情に鑑みて為されたもので
あって、リング部材の装着手順を工夫することにより、
外側スリーブ材を分割することなく、リング部材を環状
周溝内に位置する状態で組付けることができる伸縮管継
手の組立方法を提供することを目的としている。As a result, not only the number of parts increases, but also the structure of the connecting portion between the divided sleeve members becomes complicated, and the sealing performance of the connecting portion decreases during long-term use. There is a problem that it is easy and maintenance is troublesome. The present invention has been made in view of the above circumstances, and by devising a procedure for mounting the ring member,
It is an object of the present invention to provide a method of assembling an expansion joint capable of assembling a ring member in an annular circumferential groove without dividing an outer sleeve material.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する為の
本発明の第１特徴構成は、冒記伸縮管継手の組立方法に
おいて、 (イ) 周方向一箇所が切断されて径方向に弾性変形可能な
前記リング部材を、このリング部材の径方向厚みよりも
深い深さに形成されている前記環状周溝部分に挿入する
工程。 (ロ) 前記リング部材が挿入されている外側スリーブ材
に、前記内側スリーブ材を挿入する工程。 (ハ) 前記リング部材を前記環状周溝内で拡径方向に弾性
変形させながら、前記外側スリーブ材に挿入されている
内側スリーブ材の外周面に沿って軸芯方向に相対移動さ
せ、内側スリーブ材の外周面に形成した凹入溝に嵌着固
定する工程。 上記(イ),(ロ),(ハ) の工程を備えている点にあり、第２の
特徴構成は、冒記伸縮管継手の組立方法において、 (ニ) 前記外側スリーブ材の内周面に、前記環状周溝と外
側スリーブ材外周面側とに亘って連通する切欠部を形成
し、内周面に雌ネジ部が形成されているリング部材を前
記切欠部に通して前記環状周溝内に挿入する工程。 (ホ) 前記リング部材が挿入されている外側スリーブ材
に、前記内側スリーブ材を挿入する工程。 (ヘ) 前記リング部材を、前記内側スリーブ材の挿入側と
は逆の外側スリーブ材の開口部からの操作で保持して、
前記外側スリーブ材に挿入されている内側スリーブ材の
外周面に形成した雄ネジ部に螺着固定する工程。上記
(ニ) (ホ) (ヘ) の工程を備えている点にある。 〔作用〕第１の特徴構成によれば、環状周溝内の空間を
有効利用して、予めこの空間内にリング部材を挿入して
おき、この空間内でリング部材を拡径方向に弾性変形さ
せながら内側スリーブをくぐらせて凹入溝に嵌着固定す
るから、予め外側スリーブ材を二分割しておく必要がな
くなる。第２の特徴構成によれば、環状周溝内でリング
部材を内側スリーブ材に螺着固定するから、予め外側ス
リーブ材を二分割しておく必要がなくなる。 〔発明の効果〕請求項１並びに３記載の伸縮管継手の組
立方法は、予め外側スリーブ材を二分割しておくことな
く、リング部材を環状周溝内に位置する状態で内側スリ
ーブ材に組付けることができるから、部品点数が少な
く、構造を簡略化できるとともに、シール性が低下しに
くく、メンテナンスが容易になる。請求項２記載の伸縮
管継手の組立方法は、前記リング部材を、前記内側スリ
ーブ材の挿入側とは逆の外側スリーブ材開口部からの人
為操作で拡径方向に弾性変形させるから、例えば、内側
スリーブ材の端面に、内側スリーブ材の挿入にともなっ
てリング部材を強制的に拡径方向に弾性変形させる案内
面を形成するような加工が不要となる。According to a first aspect of the present invention, there is provided a method for assembling an expansion joint, comprising the steps of: A step of inserting the deformable ring member into the annular peripheral groove portion formed at a depth deeper than a radial thickness of the ring member. (B) a step of inserting the inner sleeve material into the outer sleeve material into which the ring member has been inserted; (C) While elastically deforming the ring member in the radially expanding direction in the annular circumferential groove, the ring member is relatively moved in the axial direction along the outer peripheral surface of the inner sleeve material inserted into the outer sleeve material, and A step of fitting and fixing in a concave groove formed in the outer peripheral surface of the material. The above-mentioned (a), (b), and (c) steps are provided. The second characteristic configuration is that in the method of assembling the expansion joint, (d) the inner peripheral surface of the outer sleeve material A notch communicating with the annular peripheral groove and the outer peripheral surface of the outer sleeve material is formed, and a ring member having an internal thread formed on an inner peripheral surface is passed through the notch to form the annular peripheral groove. Step of inserting into the. (E) inserting the inner sleeve material into the outer sleeve material into which the ring member has been inserted. (F) holding the ring member by an operation from the opening of the outer sleeve material opposite to the insertion side of the inner sleeve material,
A step of screwing and fixing to a male screw portion formed on the outer peripheral surface of the inner sleeve material inserted into the outer sleeve material. the above
(D) (e) and (f). [Operation] According to the first characteristic configuration, the ring member is inserted into this space in advance by effectively utilizing the space in the annular circumferential groove, and the ring member is elastically deformed in the radially expanding direction in this space. Since the inner sleeve is passed through and fixed to the recessed groove, it is not necessary to split the outer sleeve material in advance. According to the second characteristic configuration, since the ring member is screwed and fixed to the inner sleeve material in the annular circumferential groove, it is not necessary to split the outer sleeve material in advance. According to the first and third aspects of the present invention, there is provided a method for assembling a telescopic joint according to the first or third aspect of the present invention without assembling the outer sleeve member into two parts and assembling the ring member with the inner sleeve member in a state of being located in the annular circumferential groove. Since it can be attached, the number of parts is small, the structure can be simplified, the sealability is hardly reduced, and the maintenance becomes easy. In the method of assembling the expansion joint according to claim 2, the ring member is elastically deformed in the radially expanding direction by a manual operation from the outer sleeve material opening opposite to the insertion side of the inner sleeve material. It is not necessary to form a guide surface on the end surface of the inner sleeve material, which forcibly deforms the ring member elastically in the radially expanding direction with the insertion of the inner sleeve material.
【０００５】[0005]
【発明の実施の形態】次に、本発明の実施例を図面に基
づいて説明する。 イ．第１実施例 第２図に、伸縮管継手の一例を示す。この伸縮管継手
は、内側スリーブ材の一例としてのスリーブ管１と外側
スリーブ材の一例としての中間スリーブ２とがゴム輪３
ａを挟んで軸芯方向に摺動自在に嵌合されているととも
に、中間スリーブ２にはゴム輪３ｂを挟んでケーシング
管４が外嵌され、中間スリーブ２に形成した球面状外周
面２ａとケーシング管４に形成した球面状内周面４ａと
を嵌合させて、スリーブ管１のフランジ１ａに連結され
る管とケーシング４のフランジ４ｂに連結される管と
を、スリーブ管１と中間スリーブ２との摺動により伸縮
自在に、かつ中間スリーブ２の球面状外周面２ａとケー
シング管４の球面状内周面４ａとの摺動により屈曲自在
に連結するものである。前記中間スリーブ２の内周面に
はリング部材５の径方向厚さよりも深い深さの環状周溝
２ｂが形成され、スリーブ管１の外周面には環状の凹入
溝１ｂに嵌着固定されるリング部材５が環状周溝２ｂ内
に臨む姿勢で装着されて、リング部材５の凹入溝１ｂか
らの突出部と環状周溝２ｂの溝周面との接当で、スリー
ブ管１と中間スリーブ２との軸芯方向への相対摺動範囲
が規制されている。前記リング部材５は周方向の一箇所
が切断されて拡径方向に弾性変形可能なＣ型に形成さ
れ、スリーブ管１の挿入方向前方側の端面１ｃからの距
離が前記環状周溝２ｂの溝巾Ｂよりも短い範囲内の外周
面位置に嵌着固定されているとともに、中間スリーブ２
の周壁端部には、第３図に示すように、中間スリーブ２
の外周面側と環状周溝２ｂの溝周面とに亘って連通する
切欠部２ｃが、径方向に対向する２箇所の位置に形成さ
れており、又、ケーシング管４の周壁端部にも、第４図
に示すように、ケーシング管４の外周面側と球面状内周
面４ａとに亘って連通する切欠部４ｃが、径方向に対向
する２箇所の位置に形成されている。次に、前記伸縮管
継手の組立方法を第１図に基づいて説明する。第１図
(イ) に示すように、リング部材５をその径方向が中間ス
リーブ２の管軸芯方向に沿う姿勢で切欠部２ｃに通し
て、環状周溝２ｂ内に挿入した後、環状周溝２ｂ内で旋
回させ、管軸芯と同芯状の姿勢に姿勢変更する。次に、
第１図(ロ) に示すように、ケーシング管４にゴム輪３ｂ
を係入し、このゴム輪３ｂと前記リング部材５が挿入さ
れている中間スリーブ２との周面に滑剤を適量塗布する
とともに、この中間スリーブ２をその径方向がケーシン
グ管４の管軸芯方向に沿う姿勢で切欠部４ｃに通して、
球面状内周面４ａ部分に挿入した後、中間スリーブ２の
球面状外周面２ａをこの球面状内周面４ａに摺接させな
がら旋回させて、ケーシング管４の管軸芯と同芯状の姿
勢に姿勢変更する。そして、ゴム輪３ａの係入溝２ｄを
中間スリーブ２の挿入方向上手側に位置させて、ゴム輪
３ａを係入する。次に、第１図(ハ) に示すように、ゴム
製ケーシングカバー１ｄを外嵌したスリーブ管１の凹入
溝１ｂにゴムバンド又は薄肉リング６を着脱自在に嵌め
こんでおいて、ゴム輪３ａとスリーブ管１との周面に滑
剤を適量塗布する。そして、レバーブロック又は引込み
ボルト（図外）などを使って、スリーブ管１を中間スリ
ーブ２内周面に挿入し、その挿入方向前方側の端面１ｃ
を環状周溝２ｂの溝巾Ｂ途中位置に位置させる。この挿
入時、スリーブ管１の凹入溝１ｂにはゴムバンド又は薄
肉リング６が嵌めこまれているので、ゴム輪３ａが凹入
溝１ｂに引掛るおそれはない。次に、第１図(ニ) に示す
ように、凹入溝１ｂに嵌めこまれているゴムバンド又は
薄肉リング６をケーシング管４のフランジ４ｂ側開口か
らの操作で撤去した後、このフランジ４ｂ側開口から治
具７を挿入してリング部材５の両端部に形成した孔５ａ
に引掛け、この治具７でリング部材５を拡径方向に弾性
変形させながら保持して、スリーブ管１外周面に沿って
移動させ、凹入溝１ｂに嵌着固定する。尚、リング部材
５が凹入溝１ｂに嵌着されたことは、嵌着時のパチンと
いう嵌着音によって確認できる。そして、ケーシングカ
バー１ｄをケーシング管４に形成した鍔４ｄに外嵌し
て、第２図に示す伸縮管継手の組立てが完了する。 ロ. 第２実施例 第１実施例におけるリング部材５の内周面５ｂ、スリー
ブ管１の挿入方向先端面１ｃ並びに凹入溝１ｂの底面１
ｅを各々軸芯方向に対して傾斜する傾斜面に形成し、第
５図(イ) に示すように、治具７を使用することなく、ス
リーブ管１の挿入にともなうスリーブ管１の先端面１ｃ
とリング部材５の内周面５ｂとの接当押圧によって、リ
ング部材５を強制的に拡径方向に弾性変形させ、リング
部材５の外周面に沿って摺接移動させながら、第５図
(ロ) に示すように、凹入溝１ｂに嵌着固定しても良い。 ハ. 第３実施例 第１、第２実施例において、リング部材５を中間スリー
ブ２の環状周溝２ｂ部分に挿入するあたり、中間スリー
ブ２に前記切欠部２ｃを形成することなく、リング部材
５を縮径方向に弾性変形させながら挿通させることによ
り、或いは、リング部材５をリング軸芯方向に弾性変形
させて螺旋状に捩じこむことにより、環状周溝２ｂ部分
に挿入しても良い。 ニ. 第４実施例 第１実施例における拡径方向に弾性変形可能なＣ型のリ
ング部材５に代えて、第６図(イ) に示すように、内周面
に雌ネジ部５ｃが形成されている一連のＯ型リング部材
５を第１実施例におけると同様の操作で環状周溝２ｂ部
分に挿入し、スリーブ管１には雄ネジ部１ｆを形成して
おいて、第６図(ロ) に示すように、ケーシング管４のフ
ランジ４ｂ側開口から挿入した治具７をリング部材５に
形成した嵌合穴５ｄに係入し、リング部材５を回転させ
て、或いは、リング部材５を回転不能に保持しながらス
リーブ管１を回転させて、リング部材５スリーブ管１に
螺着固定しても良い。Next, an embodiment of the present invention will be described with reference to the drawings. I. First Embodiment FIG. 2 shows an example of an expansion joint. In this expansion joint, a sleeve tube 1 as an example of an inner sleeve material and an intermediate sleeve 2 as an example of an outer sleeve material are formed by a rubber ring 3.
a, and a casing tube 4 is externally fitted to the intermediate sleeve 2 with a rubber ring 3b interposed therebetween, and is fitted to the spherical outer peripheral surface 2a formed on the intermediate sleeve 2. The sleeve connected to the flange 1a of the sleeve tube 1 and the tube connected to the flange 4b of the casing 4 by fitting the spherical inner peripheral surface 4a formed on the casing tube 4 into the sleeve tube 1 and the intermediate sleeve. 2 is connected to the outer peripheral surface 2a of the intermediate sleeve 2 and the inner peripheral surface 4a of the casing tube 4 so as to be flexible. An annular circumferential groove 2b having a depth greater than the radial thickness of the ring member 5 is formed on the inner peripheral surface of the intermediate sleeve 2, and is fitted and fixed to the annular concave groove 1b on the outer peripheral surface of the sleeve tube 1. The ring member 5 is mounted so as to face the inside of the annular peripheral groove 2b, and the protrusion of the ring member 5 from the recessed groove 1b and the groove peripheral surface of the annular peripheral groove 2b abut against the sleeve tube 1 to be intermediate. The relative sliding range in the axial direction with the sleeve 2 is restricted. The ring member 5 is formed in a C-shape that is cut at one location in the circumferential direction and is elastically deformable in the radially enlarged direction. The intermediate sleeve 2 is fitted and fixed at an outer peripheral surface position within a range shorter than the width B.
As shown in FIG. 3, an intermediate sleeve 2
Notches 2c are formed at two positions radially opposed to each other so as to communicate between the outer peripheral surface side of the outer peripheral surface and the groove peripheral surface of the annular peripheral groove 2b. As shown in FIG. 4, cutouts 4c communicating with the outer peripheral surface side of the casing tube 4 and the spherical inner peripheral surface 4a are formed at two positions radially opposed to each other. Next, a method of assembling the expansion joint will be described with reference to FIG. Fig. 1
As shown in (a), the ring member 5 is inserted into the annular peripheral groove 2b by passing through the notch 2c with the radial direction thereof along the tube axis direction of the intermediate sleeve 2 and then inserted into the annular peripheral groove 2b. To change the posture to the concentric posture with the tube axis. next,
As shown in FIG. 1 (b), a rubber ring 3b is attached to the casing tube 4.
And an appropriate amount of lubricant is applied to the peripheral surface of the rubber ring 3b and the intermediate sleeve 2 in which the ring member 5 is inserted. Through the notch 4c in a posture along the direction,
After being inserted into the spherical inner peripheral surface 4a, the spherical outer peripheral surface 2a of the intermediate sleeve 2 is turned while sliding on the spherical inner peripheral surface 4a, and is concentric with the pipe axis of the casing pipe 4. Change posture to posture. Then, the rubber groove 3d is engaged with the engagement groove 2d of the rubber ring 3a positioned on the upper side in the insertion direction of the intermediate sleeve 2. Next, as shown in FIG. 1 (c), a rubber band or a thin ring 6 is removably fitted in the recessed groove 1b of the sleeve tube 1 in which the rubber casing cover 1d is fitted. An appropriate amount of lubricant is applied to the peripheral surfaces of the sleeve 3a and the sleeve tube 1. Then, the sleeve tube 1 is inserted into the inner peripheral surface of the intermediate sleeve 2 using a lever block or a drawing bolt (not shown), and the end surface 1c on the front side in the insertion direction.
Is positioned in the middle of the groove width B of the annular circumferential groove 2b. At this time, since the rubber band or the thin ring 6 is fitted in the concave groove 1b of the sleeve tube 1, there is no possibility that the rubber ring 3a is caught in the concave groove 1b. Next, as shown in FIG. 1 (d), the rubber band or the thin ring 6 fitted into the recessed groove 1b is removed by an operation from the flange 4b side opening of the casing tube 4, and then this flange 4b is removed. Holes 5a formed at both ends of ring member 5 by inserting jig 7 through side openings
The jig 7 holds the ring member 5 while elastically deforming it in the radially expanding direction, moves the sleeve member 5 along the outer peripheral surface of the sleeve tube 1, and fits and fixes the ring member 5 in the concave groove 1b. The fact that the ring member 5 has been fitted into the recessed groove 1b can be confirmed by the fitting sound of a snap when fitted. Then, the casing cover 1d is externally fitted to the flange 4d formed on the casing pipe 4, and the assembling of the telescopic joint shown in FIG. 2 is completed. B. Second Embodiment The inner peripheral surface 5b of the ring member 5, the tip surface 1c in the insertion direction of the sleeve tube 1, and the bottom surface 1 of the concave groove 1b in the first embodiment.
e is formed on an inclined surface which is inclined with respect to the axial direction, and as shown in FIG. 5 (a), the end surface of the sleeve tube 1 with the insertion of the sleeve tube 1 without using the jig 7. 1c
FIG. 5 shows that the ring member 5 is forcibly elastically deformed in the radially expanding direction by the contact pressure between the ring member 5 and the inner peripheral surface 5b of the ring member 5, and is slidably moved along the outer peripheral surface of the ring member 5.
As shown in (b), it may be fitted and fixed in the recessed groove 1b. C. Third Embodiment In the first and second embodiments, when the ring member 5 is inserted into the annular circumferential groove 2b of the intermediate sleeve 2, the ring member 5 is formed without forming the cutout portion 2c in the intermediate sleeve 2. May be inserted into the annular circumferential groove 2b by elastically deforming the ring member 5 in the diameter reducing direction or by spirally screwing the ring member 5 elastically in the ring axis direction. D. Fourth Embodiment Instead of the C-shaped ring member 5 capable of being elastically deformed in the radially expanding direction in the first embodiment, a female screw portion 5c is formed on the inner peripheral surface as shown in FIG. A series of O-shaped ring members 5 are inserted into the annular peripheral groove 2b by the same operation as in the first embodiment, and the male thread portion 1f is formed in the sleeve tube 1, and FIG. As shown in (b), the jig 7 inserted from the flange 4b side opening of the casing tube 4 is engaged with the fitting hole 5d formed in the ring member 5, and the ring member 5 is rotated or the ring member 5 is rotated. The ring member 5 may be fixedly screwed to the sleeve tube 1 by rotating the sleeve tube 1 while maintaining the rotation of the sleeve member 1 unrotatable.
【０００６】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構造に限定されるものではない。[0006] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.
【図１】第１実施形態の伸縮管継手の組立方法を示し、
中間スリーブにリング部材を挿入するときの説明図FIG. 1 shows a method for assembling an expansion joint according to a first embodiment;
Explanatory drawing when inserting a ring member into an intermediate sleeve
【図２】伸縮管継手の組立方法を示し、ケーシング管に
中間スリーブを挿入するときの説明図FIG. 2 shows an assembling method of an expansion joint, and is an explanatory view when an intermediate sleeve is inserted into a casing pipe.
【図３】伸縮管継手の組立方法を示し、中間スリーブに
スリーブ管を挿入するときの説明図FIG. 3 shows an assembling method of an expansion joint, and is an explanatory view when a sleeve tube is inserted into an intermediate sleeve.
【図４】伸縮管継手の組立方法を示し、スリーブ管の凹
入溝にリング部材を装着するときの説明図FIG. 4 shows an assembling method of an expansion joint, and is an explanatory view when a ring member is attached to a recess groove of a sleeve pipe.
【図５】組立られた伸縮管継手の断面図FIG. 5 is a sectional view of the assembled expansion joint.
【図６】中間スリーブの拡大正面図FIG. 6 is an enlarged front view of the intermediate sleeve.
【図７】ケーシング管の拡大正面図FIG. 7 is an enlarged front view of a casing tube.
【図８】第２実施形態の伸縮管継手の組立方法を示し、
スリーブ管の凹入溝にリング部材を装着するときの説明
図FIG. 8 shows a method of assembling the expansion joint of the second embodiment,
Explanatory drawing when a ring member is attached to a concave groove of a sleeve tube
【図９】組立られた伸縮管継手の一部の断面側面図FIG. 9 is a cross-sectional side view of a part of the assembled expansion joint.
【図１０】第３実施形態の伸縮管継手の組立方法を示
し、スリーブ管の凹入溝にリング部材を装着するときの
説明図FIG. 10 is an explanatory view showing a method of assembling the expansion joint according to the third embodiment, in which a ring member is attached to a concave groove of a sleeve tube.
【図１１】組立られた伸縮管継手の一部の断面側面図FIG. 11 is a cross-sectional side view of a part of the assembled expansion joint.
１ 内側スリーブ材 １ｂ 凹入溝 １ｆ 雄ネジ部 ２ 外側スリーブ材 ２ｂ 環状周溝 ２ｃ 切欠部 ５ リング部材 ５ｃ 雌ネジ部 DESCRIPTION OF SYMBOLS 1 Inner sleeve material 1b Recessed groove 1f Male thread part 2 Outer sleeve material 2b Annular circumferential groove 2c Notch part 5 Ring member 5c Female thread part
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年７月８日[Submission date] July 8, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【発明の名称】 伸縮管継手の組立方法並びに伸縮管
継手Patent application title: Method of assembling expansion joint and expansion joint
【特許請求の範囲】[Claims]
【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、内側スリーブ材と
外側スリーブ材とが互いに軸芯方向に摺動自在に嵌合さ
れているとともに、前記両スリーブ材どうしの軸芯方向
への摺動移動範囲が、前記外側スリーブ材の内周面に形
成されている環状周溝の溝周面と、前記内側スリーブ材
の外周面に装着固定されているリング部材との接当で規
制されている伸縮管継手の組立方法、並びに、その組立
方法で組立られる伸縮管継手に関する。The present invention relates to an inner sleeve material and an outer sleeve material which are slidably fitted in the axial direction with respect to each other, and wherein the two sleeve materials are slidably moved in the axial direction. The expansion and contraction is restricted by the contact between the groove peripheral surface of the annular peripheral groove formed on the inner peripheral surface of the outer sleeve material and the ring member mounted and fixed on the outer peripheral surface of the inner sleeve material. Assembling method of pipe joint and its assembly
The present invention relates to an expansion joint which is assembled by a method .
【０００２】[0002]
【従来の技術】この種の伸縮管継手では、前記リング部
材を外側スリーブ材の内径よりも小なる外径にまで弾性
変形させ、その状態で外側スリーブ材内に挿入したの
ち、この挿入されたリング部材を外側スリーブ材の内周
面に沿って軸芯方向に摺接移動させながら環状周溝内に
嵌め込む。次に、前記内側スリーブ材が外側スリーブ材
内の所定位置に挿入接続されるまで、前記環状周溝内に
おいて、リング部材を拡大器具等で外側スリーブ材の内
径よりも大なる内径となるまで拡径させる必要がある。
そのため、前記リング部材の外側スリーブ材内への挿
入、及び、挿入されたリング部材の環状周溝内への移動
に多大の手数と労力を要する。特に、特公昭５９−１１
０６４号公報等に開示されているように、前記リング部
材が外側スリーブ材の内周面に嵌合保持され、かつ、前
記内側スリーブ材の外周面にリング部材の一部が伸縮範
囲で相対移動自在に係入する環状周溝を形成してある場
合では、前記リング部材と外側スリーブ材の嵌合用周溝
との間に拡大器具を挿入可能な空間が存在せず、しか
も、内側スリーブ材の外周面と外側スリーブ材の内周面
との間の空隙も小さいため、リング部材の挿入作業及び
拡径作業に多大の労力と手間を要する問題がある。それ
故に、従来では、伸縮管継手を組立てるにあたり、外側
スリーブ材を環状周溝部分で軸芯方向に二分割して、予
め一方の分割スリーブ材を内側スリーブ材に外嵌してお
いた後、リング部材を凹入溝に嵌着固定し、次に他方の
分割スリーブ材を外嵌して、環状周溝内にリング部材が
位置する状態で両分割スリーブ材どうしを連結していた
（例えば、実開昭５６−２３７８６号公報参照）。2. Description of the Related Art In this type of expansion joint, the ring
Resilient material to outer diameter smaller than inner diameter of outer sleeve material
Deformed and then inserted into the outer sleeve material
The inserted ring member is moved to the inner circumference of the outer sleeve material.
While sliding in the axial direction along the surface,
Fit it. Next, the inner sleeve material is replaced with the outer sleeve material.
Until it is inserted and connected at a predetermined position in the annular circumferential groove.
The ring member inside the outer sleeve material
It is necessary to increase the diameter until the inner diameter becomes larger than the diameter.
Therefore, the ring member is inserted into the outer sleeve material.
And movement of the inserted ring member into the annular circumferential groove
Requires a lot of trouble and effort. In particular, Japanese Patent Publication No. 59-11
No. 064, etc., the ring portion
The material is fitted and retained on the inner peripheral surface of the outer sleeve material, and
A part of the ring member extends and contracts on the outer peripheral surface of the inner sleeve material.
In the case where an annular peripheral groove is formed so as to be relatively movable
In the case, the circumferential groove for fitting between the ring member and the outer sleeve material
There is no space between the
Also, the outer peripheral surface of the inner sleeve material and the inner peripheral surface of the outer sleeve material
The gap between the ring member is small,
There is a problem that a large amount of labor and labor are required for the expanding work. That
Therefore, conventionally, in assembling the expansion joint , the outer sleeve material is divided into two parts in the axial center direction at the annular circumferential groove portion, and one of the divided sleeve materials is fitted on the inner sleeve material in advance, and then the ring is formed. The member is fitted and fixed in the recessed groove, and then the other split sleeve material is externally fitted to connect the two split sleeve materials while the ring member is positioned in the annular circumferential groove (for example, the actual See JP-A-56-23786).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
組立方法では、外側スリーブ材を予め環状周溝部分で二
分割し、かつ、それら両分割スリーブ材どうしを密封状
態で連結するため、部品点数が増大するだけでなく、分
割スリーブ材どうしの連結部の構造が複雑化し、しか
も、長期使用のうちにその連結部のシール性が低下し易
く、メンテナンスに手間がかかる問題があった。本発明
は、上記実情に鑑みて為されたものであって、第１目的
は、リング部材の装着構造及び装着手順を工夫すること
により、外側スリーブ材を分割することなく、リング部
材を環状周溝内に位置する状態で組付けることができ、
しかも、前記環状周溝に対するリング部材の挿入作業も
少ない労力で迅速、容易に行うことができる伸縮管継手
の組立方法を提供する点にあり、第２目的は、リング部
材の挿入作業の迅速化、容易化を促進しながらも、両ス
リーブ材の接合強度を充分に確保することのできる伸縮
管継手を提供する点にある。 SUMMARY OF THE INVENTION However, the conventional
In the assembly method, the outer sleeve material is
Divide and seal the two divided sleeve materials
For coupling with condition, not only the number of parts is increased, the structure of the connecting portion of each other split sleeve material is complicated, moreover, the sealing of the connecting portion of the long-term use tends to decrease, time and labor for maintenance There was such a problem. The present invention has been made in view of the above circumstances, and has a first object.
By devising the mounting structure and mounting procedure of the ring member, without dividing the outer sleeve material, it is possible to assemble the ring member in a state located in the annular circumferential groove ,
In addition, the operation of inserting the ring member into the annular peripheral groove is also required.
Telescopic fittings that can be done quickly and easily with less effort
The second object is to provide a method of assembling the ring part.
While promoting the quick and easy insertion of materials,
Expansion and contraction to ensure sufficient bond strength of leave material
It is in providing a pipe joint.
【０００４】[0004]
【課題を解決するための手段】上記第１目的を達成する
為の本発明の請求項１の特徴構成は、冒記伸縮管継手の
組立方法において、（イ）前記外側スリーブ材の内周面
に、前記環状周溝と外側スリーブ材の外周面側とに亘っ
て連通する切欠部を形成し、周方向一箇所が切断されて
径方向に弾性変形可能な前記リング部材を、前記切欠部
を通してリング部材の径方向厚みよりも深い深さに形成
されている前記環状周溝に挿入する工程、（ロ）前記リ
ング部材が挿入されている外側スリーブ材に、前記内側
スリーブ材を挿入する工程、（ハ）前記リング部材を前
記環状周溝内で拡径方向に弾性変形させながら、前記外
側スリーブ材に挿入されている内側スリーブ材の外周面
に沿って軸芯方向に相対移動させ、該リング部材を内側
スリーブ材の外周面に形成した凹入溝に嵌着固定する工
程、上記（イ）〜（ハ）の工程を備えている点にある。
前記特徴構成によれば、外側スリーブ材の環状周溝内の
空間を有効利用して、予めこの空間内にリング部材を挿
入しておき、この空間内でリング部材を拡径方向に弾性
変形させながら内側スリーブ材をくぐらせて凹入溝に嵌
着固定するから、予め外側スリーブ材を二分割しておく
必要がなくなる。しかも、前記外側スリーブ材の外周面
側から環状周溝内にリング部材を挿入するにあたって
も、該リング部材を外側スリーブ材の内周面に形成され
ている切欠部を通してスムースに挿入することができ
る。従って、リング部材を環状周溝内に位置する状態で
内側スリーブ材に組付けることができるから、予め外側
スリーブ材を二分割しておく従来方法に比して、部品点
数が少なく、構造の簡略化とメンテナンスの容易化とを
図ることができるとともに、シール性の低下も抑制する
ことができる。しかも、前記外側スリーブ材の環状周溝
内にリング部材を挿入するにあたっても、例えば、前記
リング部材を縮径方向に弾性変形させながら挿通させた
り、或いは、リング部材をリング軸芯方向に弾性変形さ
せて螺旋状に捩じこむ場合に比して、リング部材の挿入
作業を少ない労力で迅速、容易に行うことができる。 The first object is achieved.
According to a first aspect of the present invention , there is provided a method for assembling an expansion joint, comprising : (a) an inner peripheral surface of the outer sleeve material;
The outer circumferential groove and the outer peripheral surface of the outer sleeve material.
The cutout portion communicating to form Te, the elastically deformable the ring member circumferentially one place is cut radially, said notch
The step of inserting into said annular peripheral groove formed in a depth deeper than the radial thickness of the ring member through, (b) the outside sleeve member ring member is inserted, the step of inserting the inner sleeve member , while the (c) the ring member is elastically deformed in the diameter direction in the annular peripheral groove, is relatively moved in the axial direction along the outer peripheral surface of the inner sleeve member is inserted into the outer sleeve member, said It comprises a step of fitting and fixing the ring member into a concave groove formed on the outer peripheral surface of the inner sleeve material, and the above steps (a) to (c) .
According to the characteristic configuration, the outer sleeve material has an annular circumferential groove.
Use the space effectively and insert the ring member into this space in advance.
In this space, the ring member is elastically expanded in the radial direction in this space.
Go through the inner sleeve material while deforming and fit into the concave groove
The outer sleeve material is divided into two parts in advance to secure
Eliminates the need. Moreover, the outer peripheral surface of the outer sleeve material
When inserting the ring member into the annular groove from the side
Also, the ring member is formed on the inner peripheral surface of the outer sleeve material.
Can be inserted smoothly through the notch
You. Therefore, when the ring member is located in the annular circumferential groove,
Because it can be assembled to the inner sleeve material,
Compared to the conventional method of splitting the sleeve material into two parts,
Small number, simplified structure and easy maintenance
As well as reducing the sealing performance
be able to. Moreover, the annular circumferential groove of the outer sleeve material
In inserting the ring member into, for example,
The ring member was inserted while elastically deforming in the radial direction.
Or the ring member is elastically deformed in the ring axis direction.
Insertion of the ring member compared to the case of screwing into a spiral
Work can be performed quickly and easily with less labor.
【０００５】上記第２目的を達成する為の本発明の請求
項２記載の特徴構成は、請求項１の組立方法で組立られ
る伸縮管継手であって、前記外側スリーブ材の切欠部
が、前記リング部材の径方向が外側スリーブ材の軸芯方
向に沿う姿勢にあるときのみ、該リング部材の環状周溝
への通過を許容する幅に構成されているとともに、前記
切欠部を通して挿入されたリング部材が、環状周溝内に
おいて外側スリーブ材の軸芯と同芯状の姿勢に向き変更
自在に構成されている点にある。前記特徴構成によれ
ば、外側スリーブ材の切欠部を通して、前記リング部材
をそれの径方向が外側スリーブ材の軸芯方向に沿う姿勢
で環状周溝内に挿入したのち、このリング部材を向き変
更操作するだけで、該リング部材の軸芯と外側スリーブ
材の軸芯とを合致させることができる。しかも、前記リ
ング部材の軸芯長さが直径に比して小さいくなるほど、
外側スリーブ材の内周面に形成される切欠部の円周方向
での幅が小さくなるから、該切欠部が形成されている側
の環状周溝の溝周面とリング部材との接触面積を充分確
保することができる。従って、前記外側スリーブ材側に
環状周溝及び切欠部を形成して、リング部材の挿入作業
を少ない労力で迅速、容易に行うことができるようにし
ながらも、地震や不同沈下等に起因して嵌合接合された
両スリーブ材に管軸芯方向の外力（圧縮力等）が作用し
たときには、この外力を前記環状周溝の溝周面とリング
部材との広い接触面積で分散支持することができ、両ス
リーブ材の接合強度を充分確保することができる。 [0005] Claims of the present invention for achieving the second object
The feature configuration according to claim 2 is assembled by the assembling method according to claim 1.
A telescopic joint, the notch of the outer sleeve material
However, the radial direction of the ring member is the axial center of the outer sleeve material.
Only when it is in a position along
And is configured to allow passage to the
The ring member inserted through the notch is inserted into the annular groove.
Changed to a position concentric with the axis of the outer sleeve material
The point is that it is freely configured. According to the above feature configuration
For example, the ring member may be passed through a cutout of the outer sleeve material.
The radial direction of it is along the axial direction of the outer sleeve material
After inserting the ring member into the annular circumferential groove,
With simple operation, the axis of the ring member and the outer sleeve
The axis of the material can be matched. In addition,
The smaller the shaft core length of the bearing member is compared to the diameter,
Circumferential direction of notch formed in inner peripheral surface of outer sleeve material
At the side where the notch is formed
Make sure that the contact area between the ring peripheral surface of the annular
Can be maintained. Therefore, the outer sleeve material side
Form an annular circumferential groove and notch to insert the ring member
Can be done quickly and easily with less effort
However, they were mated and joined due to an earthquake, uneven settlement, etc.
External force (compression force, etc.) acts on both sleeve materials in the direction of the tube axis.
When this external force is applied, the external force
Distributed support with a wide contact area with the member
The joining strength of the leave material can be sufficiently ensured.
【０００６】本発明の請求項３記載の特徴構成は、前記
外側スリーブ材に形成された球面状外周面に、ケーシン
グ管に形成された球面状内周面を相対揺動自在に嵌合す
るとともに、前記ケーシング管の内周面には、外側スリ
ーブ材の径方向がケーシング管の軸芯方向に沿う姿勢に
あるときのみ、該ケーシング管の外周面側から球面状内
周面内への外側スリーブ材の通過を許容する切欠部が形
成されているとともに、前記切欠部を通して挿入された
外側スリーブ材が、球面状内周面内においてケーシング
管の軸芯と同芯状の姿勢に向き変更自在に構成されてい
る点にある。前記特徴構成によれば、ケーシング管の内
周面に形成されている切欠部を通して、外側スリーブ材
をそれの径方向がケーシング管の軸芯方向に沿う姿勢で
球面状内周面内に挿入したのち、この外側スリーブ材を
向き変更操作するだけで、該外側スリーブ材の軸芯とケ
ーシング管の軸芯とを合致させることができる。しか
も、前記外側スリーブ材の軸芯長さが直径に比して小さ
いくなるほど、ケーシング管の内周面に形成される切欠
部の円周方向での幅が小さくなるから、該切欠部が形成
されている側の球面状内周面部分と外側スリーブ材の球
面状外周面部分との接触面積を充分確保することができ
る。従って、前記ケーシング管に切欠部を形成して、外
側スリーブ材の挿入作業を少ない労力で迅速、容易に行
うことができるようにしながらも、地震や不同沈下等に
起因して嵌合接合されたケーシング管と外側スリーブ材
とに管軸芯方向の外力（引張力等）が作用したときに
は、この外力を前記ケーシング管と外側スリーブ材との
広い球面状の接触面積で分散支持することができ、両ケ
ーシング管と外側スリーブ材との接合強度を充分確保す
ることができる。 According to a third aspect of the present invention, there is provided
On the spherical outer surface formed on the outer sleeve material,
The spherical inner peripheral surface formed on the pipe
And the outer peripheral surface of the casing tube
In a posture where the radial direction of the tube material is along the axis of the casing tube
Only when there is a spherical inside from the outer peripheral surface side of the casing tube
Notch to allow passage of outer sleeve material into the peripheral surface
And inserted through the notch
The outer sleeve material has a casing inside the spherical inner peripheral surface.
It is configured to be able to change its orientation to a posture concentric with the axis of the pipe.
It is in a point. According to the characteristic configuration, the inside of the casing tube
Outer sleeve material through the notch formed in the peripheral surface
With its radial direction along the axis of the casing tube
After being inserted into the spherical inner peripheral surface, this outer sleeve material is
Just by changing the direction, the shaft center of the outer sleeve material
It is possible to match with the axis of the sourcing tube. Only
Also, the axial length of the outer sleeve material is smaller than the diameter.
The notch formed on the inner peripheral surface of the casing tube
The notch is formed because the width of the part in the circumferential direction becomes smaller.
Side spherical inner peripheral surface and outer sleeve material sphere
It is possible to secure a sufficient contact area with the planar outer peripheral surface
You. Therefore, a notch is formed in the casing tube,
Quick and easy insertion of side sleeve material with little effort
To prevent earthquakes, uneven settlements, etc.
Casing tube and outer sleeve material mated and joined due to
When an external force (such as tensile force) acts in the direction of the tube axis
This external force is applied between the casing tube and the outer sleeve material.
Dispersion can be supported with a wide spherical contact area.
Ensuring sufficient bonding strength between the casing tube and outer sleeve material
Can be
【０００７】[0007]
【発明の実施の形態】〔第１実施形態〕図５に 、伸縮管継手の一例を示す。こ
の伸縮管継手は、内側スリーブ材の一例としてのスリー
ブ管１と外側スリーブ材の一例としての中間スリーブ２
とがゴム輪３ａを挟んで軸芯方向に摺動自在に嵌合され
ているとともに、中間スリーブ２にはゴム輪３ｂを挟ん
でケーシング管４が外嵌され、中間スリーブ２に形成し
た球面状外周面２ａとケーシング管４に形成した球面状
内周面４ａとを嵌合させて、スリーブ管１のフランジ１
ａに連結される管とケーシング管４のフランジ４ｂに連
結される管とを、スリーブ管１と中間スリーブ２との摺
動により伸縮自在に、かつ中間スリーブ２の球面状外周
面２ａとケーシング管4の球面状内周面４ａとの摺動に
より屈曲自在に連結するものである。前記中間スリーブ
２の内周面にはリング部材５の径方向厚さよりも深い深
さの環状周溝２ｂが形成され、スリーブ管１の外周面に
は環状の凹入溝１ｂに嵌着固定されるリング部材５が環
状周溝２ｂ内に臨む姿勢で装着されて、リング部材５の
凹入溝１ｂからの突出部と環状周溝２ｂの溝周面との接
当で、スリーブ管１と中間スリーブ２との軸芯方向への
相対摺動範囲が規制されている。前記リング部材５は周
方向の一箇所が切断されて拡径方向に弾性変形可能なＣ
型に形成され、スリーブ管１の挿入方向前方側の端面１
ｃからの距離が前記環状周溝２ｂの溝巾Ｂよりも短い範
囲内の外周面位置に嵌着固定されているとともに、中間
スリーブ２の周壁端部には、図６に示すように、中間ス
リーブ２の外周面側と環状周溝２ｂの溝周面とに亘って
連通する切欠部２ｃが、径方向に対向する２箇所の位置
に形成されており、又、ケーシング管４の周壁端部に
も、第４図に示すように、ケーシング管４の外周面側と
球面状内周面４ａとに亘って連通する切欠部４ｃが、径
方向に対向する２箇所の位置に形成されている。次に、
前記伸縮管継手の組立方法を図１〜図５に基づいて説明
する。図１に示すように、リング部材５をその径方向が
中間スリーブ２の管軸芯方向に沿う姿勢で切欠部２ｃに
通して、環状周溝２ｂ内に挿入した後、環状周溝２ｂ内
で旋回させ、管軸芯と同芯状の姿勢に姿勢変更する。次
に、図２に示すように、ケーシング管４にゴム輪３ｂを
係入し、このゴム輪３ｂと前記リング部材５が挿入され
ている中間スリーブ２との周面に滑剤を適量塗布すると
ともに、この中間スリーブ２をその径方向がケーシング
管４の管軸芯方向に沿う姿勢で切欠部４ｃに通して、球
面状内周面４ａ部分に挿入した後、中間スリーブ２の球
面状外周面２ａをこの球面状内周面４ａに摺接させなが
ら旋回させて、ケーシング管４の管軸芯と同芯状の姿勢
に姿勢変更する。そして、ゴム輪３ａの係入溝２ｄを中
間スリーブ２の挿入方向上手側に位置させて、ゴム輪３
ａを係入する。次に、図３に示すように、ゴム製ケーシ
ングカバー１ｄを外嵌したスリーブ管１の凹入溝１ｂに
ゴムバンド又は薄肉リング６を着脱自在に嵌めこんでお
いて、ゴム輪３ａとスリーブ管１との周面に滑剤を適量
塗布する。そして、レバーブロック又は引込みボルト
（図外）などを使って、スリーブ管１を中間スリーブ２
内周面に挿入し、その挿入方向前方側の端面１ｃを環状
周溝２ｂの溝巾Ｂ途中位置に位置させる。この挿入時、
スリーブ管１の凹入溝１ｂにはゴムバンド又は薄肉リン
グ６が嵌めこまれているので、ゴム輪３ａが凹入溝１ｂ
に引掛るおそれはない。次に、図４に示すように、凹入
溝1bに嵌めこまれているゴムバンド又は薄肉リング６を
ケーシング管４のフランジ４ｂ側開口からの操作で撤去
した後、このフランジ４ｂ側開口から治具７を挿入して
リング部材５の両端部に形成した孔５ａに引掛け、この
治具７でリング部材５を拡径方向に弾性変形させながら
保持して、スリーブ管１外周面に沿って移動させ、凹入
溝１ｂに嵌着固定する。尚、リング部材５が凹入溝１ｂ
に嵌着されたことは、嵌着時のパチンという嵌着音によ
って確認できる。そして、ケーシングカバー１ｄをケー
シング管４に形成した鍔４ｄに外嵌して、図５に示す伸
縮管継手の組立てが完了する。〔第２実施形態〕 第１実施形態におけるリング部材５の
内周面５ｂ、スリーブ管１の挿入方向先端面１ｃ並びに
凹入溝１ｂの底面１ｅを各々軸芯方向に対して傾斜する
傾斜面に形成し、図８に示すように、治具７を使用する
ことなく、スリーブ管１の挿入にともなうスリーブ管１
の先端面１ｃとリング部材５の内周面５ｂとの接当押圧
によって、リング部材５を強制的に拡径方向に弾性変形
させ、リング部材５の外周面に沿って摺接移動させなが
ら、図９に示すように、凹入溝１ｂに嵌着固定しても良
い。 [ First Embodiment] FIG. 5 shows an example of an expansion joint. This expansion joint includes a sleeve tube 1 as an example of an inner sleeve material and an intermediate sleeve 2 as an example of an outer sleeve material.
Are fitted slidably in the axial direction with the rubber ring 3a interposed therebetween, and the casing tube 4 is fitted on the intermediate sleeve 2 with the rubber ring 3b interposed therebetween. The outer peripheral surface 2a and the spherical inner peripheral surface 4a formed on the casing tube 4 are fitted to each other to form the flange 1 of the sleeve tube 1.
a and the tube connected to the flange 4b of the casing tube 4 can be extended and contracted by sliding the sleeve tube 1 and the intermediate sleeve 2, and the spherical outer peripheral surface 2a of the intermediate sleeve 2 and the casing tube 4 is connected to bendable by sliding with the spherical inner peripheral surface 4a. An annular circumferential groove 2b having a depth greater than the radial thickness of the ring member 5 is formed on the inner peripheral surface of the intermediate sleeve 2, and is fitted and fixed to the annular concave groove 1b on the outer peripheral surface of the sleeve tube 1. The ring member 5 is mounted so as to face the inside of the annular peripheral groove 2b, and the protrusion of the ring member 5 from the recessed groove 1b and the groove peripheral surface of the annular peripheral groove 2b abut against the sleeve tube 1 to be intermediate. The relative sliding range in the axial direction with the sleeve 2 is restricted. The ring member 5 is cut at one location in the circumferential direction and is elastically deformable in the radially expanding direction.
End surface 1 on the front side in the insertion direction of sleeve tube 1
As shown in FIG. 6, the outer peripheral surface of the intermediate sleeve 2 is fitted and fixed to an outer peripheral surface position within a range where the distance from the outer peripheral surface c is shorter than the groove width B of the annular peripheral groove 2 b. Notches 2c communicating with the outer peripheral surface side of the sleeve 2 and the groove peripheral surface of the annular peripheral groove 2b are formed at two positions facing each other in the radial direction. In addition, as shown in FIG. 4, cutouts 4c communicating between the outer peripheral surface side of the casing tube 4 and the spherical inner peripheral surface 4a are formed at two positions radially opposed to each other. . next,
A method for assembling the expansion joint will be described with reference to FIGS. As shown in FIG. 1 , the ring member 5 is inserted into the annular peripheral groove 2 b by passing the ring member 5 through the cutout portion 2 c in a posture in which the radial direction is along the tube axis direction of the intermediate sleeve 2, Rotate to change the posture to the concentric posture with the tube axis. Next, as shown in FIG. 2 , a rubber ring 3b is engaged with the casing tube 4, and an appropriate amount of lubricant is applied to the peripheral surface of the rubber ring 3b and the intermediate sleeve 2 into which the ring member 5 is inserted. After the intermediate sleeve 2 is inserted into the spherical inner peripheral surface 4a by passing through the notch 4c so that the radial direction thereof is along the pipe axis direction of the casing tube 4, the spherical outer peripheral surface 2a of the intermediate sleeve 2 is inserted. Is rotated while sliding on the spherical inner peripheral surface 4 a to change the posture to a posture concentric with the tube axis of the casing tube 4. Then, the engagement groove 2 d of the rubber ring 3 a is positioned on the upper side in the insertion direction of the intermediate sleeve 2, and the rubber ring 3
a. Next, as shown in FIG. 3 , a rubber band or a thin ring 6 is removably fitted into the recessed groove 1b of the sleeve tube 1 in which the rubber casing cover 1d is fitted. An appropriate amount of a lubricant is applied to the peripheral surface of 1. Then, the sleeve tube 1 is connected to the intermediate sleeve 2 using a lever block or a pull-in bolt (not shown).
It is inserted into the inner peripheral surface, and the end face 1c on the front side in the insertion direction is positioned at a position in the middle of the groove width B of the annular peripheral groove 2b. At this insertion,
Since the rubber band or the thin ring 6 is fitted in the concave groove 1b of the sleeve tube 1, the rubber ring 3a is
There is no risk of getting caught in Next, as shown in FIG. 4 , the rubber band or the thin ring 6 fitted in the recessed groove 1b is removed from the casing tube 4 through the opening on the flange 4b side, and then is repaired from the opening on the flange 4b side. The ring member 5 is inserted and hooked into the holes 5a formed at both ends of the ring member 5, and the jig 7 holds the ring member 5 while elastically deforming it in the radially expanding direction. It is moved and fitted and fixed in the concave groove 1b. In addition, the ring member 5 has the concave groove 1b.
Can be confirmed by the snapping sound at the time of fitting. Then, the casing cover 1d is externally fitted to the flange 4d formed on the casing tube 4, and the assembling of the telescopic joint shown in FIG. 5 is completed. [Second Embodiment] In the first embodiment, the inner peripheral surface 5b of the ring member 5, the distal end surface 1c of the sleeve tube 1 in the insertion direction, and the bottom surface 1e of the concave groove 1b are respectively formed into inclined surfaces inclined with respect to the axial center direction. As shown in FIG. 8 , as shown in FIG.
The contact pressure between the distal end surface 1c of the ring member 5 and the inner peripheral surface 5b of the ring member 5 forcibly deforms the ring member 5 elastically in the radially expanding direction, and slides and moves along the outer peripheral surface of the ring member 5 while as shown in FIG. 9, it may also be fitted and fixed to the recessed groove 1b
No.
【０００８】[0008]
【図面の簡単な説明】[Brief description of the drawings]
【図１】第１実施形態の伸縮管継手の組立方法を示し、
中間スリーブにリング部材を挿入するときの説明図FIG. 1 shows a method for assembling an expansion joint according to a first embodiment;
Explanatory drawing when inserting a ring member into an intermediate sleeve
【図２】伸縮管継手の組立方法を示し、ケーシング管に
中間スリーブを挿入するときの説明図FIG. 2 shows an assembling method of an expansion joint, and is an explanatory view when an intermediate sleeve is inserted into a casing pipe.
【図３】伸縮管継手の組立方法を示し、中間スリーブに
スリーブ管を挿入するときの説明図FIG. 3 shows an assembling method of an expansion joint, and is an explanatory view when a sleeve tube is inserted into an intermediate sleeve.
【図４】伸縮管継手の組立方法を示し、スリーブ管の凹
入溝にリング部材を装着するときの説明図FIG. 4 shows an assembling method of an expansion joint, and is an explanatory view when a ring member is attached to a recess groove of a sleeve pipe.
【図５】組立られた伸縮管継手の断面図FIG. 5 is a sectional view of the assembled expansion joint.
【図６】中間スリーブの拡大正面図FIG. 6 is an enlarged front view of the intermediate sleeve.
【図７】ケーシング管の拡大正面図FIG. 7 is an enlarged front view of a casing tube.
【図８】第２実施形態の伸縮管継手の組立方法を示し、
スリーブ管の凹入溝にリング部材を装着するときの説明
図FIG. 8 shows a method of assembling the expansion joint of the second embodiment,
Explanatory drawing when a ring member is attached to a concave groove of a sleeve tube
【図９】組立られた伸縮管継手の一部の断面側面図 FIG. 9 is a cross-sectional side view of a part of the assembled expansion joint .
【符号の説明】 １ 内側スリーブ材 １ｂ 凹入溝 ２ 外側スリーブ材２ａ 球面状外周面 ２ｂ 環状周溝 ２ｃ 切欠部４ ケーシング管 ４ａ 球面状内周面 ４ｃ 切欠部 ５ リング部材 [Description of Signs] 1 Inner sleeve material 1b Recessed groove 2 Outer sleeve material 2a Spherical outer peripheral surface 2b Annular peripheral groove 2c Notch 4 Casing tube 4a Spherical inner peripheral surface 4c Notch 5 Ring member
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１１[Correction target item name] FIG.
【補正方法】削除[Correction method] Deleted
【手続補正３】[Procedure amendment 3]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１０[Correction target item name] FIG.
【補正方法】削除[Correction method] Deleted
Claims (3)
いに軸芯方向に摺動自在に嵌合されているとともに、前
記両スリーブ材どうしの軸芯方向への摺動移動範囲が、
前記外側スリーブ材の内周面に形成されている環状周溝
の溝周面と、前記内側スリーブ材の外周面に装着固定さ
れているリング部材との接当で規制されている伸縮管継
手の組立方法において、 （イ）前記外側スリーブ材の内周面に、前記環状周溝と
外側スリーブ材の外周面側とに亘って連通する切欠部を
形成し、周方向一箇所が切断されて径方向に弾性変形可
能な前記リング部材を、前記切欠部を通してリング部材
の径方向厚みよりも深い深さに形成されている前記環状
周溝に挿入する工程、 （ロ）前記リング部材が挿入されている外側スリーブ材
に、前記内側スリーブ材を挿入する工程、 （ハ）前記リング部材を前記環状周溝内で拡径方向に弾
性変形させながら、前記外側スリーブ材に挿入されてい
る内側スリーブ材の外周面に沿って軸芯方向に相対移動
させ、該リング部材を内側スリーブ材の外周面に形成し
た凹入溝に嵌着固定する工程、 上記（イ）〜（ハ）の工程を備えていることを特徴とす
る伸縮管継手の組立方法。An inner sleeve material and an outer sleeve material are fitted slidably in the axial direction with respect to each other, and the sliding movement range of the two sleeve materials in the axial direction is:
A telescopic joint which is regulated by abutment between a groove peripheral surface of an annular peripheral groove formed on an inner peripheral surface of the outer sleeve material and a ring member fixed to an outer peripheral surface of the inner sleeve material. In the assembling method, (a) a notch portion is formed in the inner peripheral surface of the outer sleeve material so as to communicate with the annular peripheral groove and the outer peripheral surface side of the outer sleeve material, and one circumferential portion is cut to have a diameter. Inserting the ring member elastically deformable in the direction into the annular circumferential groove formed at a depth deeper than the radial thickness of the ring member through the notch; (b) inserting the ring member (C) inserting the inner sleeve material into the outer sleeve material while elastically deforming the ring member in the radial direction in the annular circumferential groove. Axle along outer circumference In which the ring member is relatively moved in the direction, and the ring member is fitted and fixed in a recessed groove formed in the outer peripheral surface of the inner sleeve material. How to assemble the joint.
継手であって、前記外側スリーブ材の切欠部が、前記リ
ング部材の径方向が外側スリーブ材の軸芯方向に沿う姿
勢にあるときのみ、該リング部材の環状周溝への通過を
許容する幅に構成されているとともに、前記切欠部を通
して挿入されたリング部材が、環状周溝内において外側
スリーブ材の軸芯と同芯状の姿勢に向き変更自在に構成
されている伸縮管継手。2. A telescopic joint which is assembled by the assembling method according to claim 1, wherein the notch of the outer sleeve material is in a position where a radial direction of the ring member is along an axial direction of the outer sleeve material. Only the ring member is configured to have a width that allows the ring member to pass through the annular peripheral groove, and the ring member inserted through the notch is coaxial with the axis of the outer sleeve material in the annular peripheral groove. An expansion joint that is configured to be freely changeable in posture.
外周面に、ケーシング管に形成された球面状内周面を相
対揺動自在に嵌合するとともに、前記ケーシング管の内
周面には、外側スリーブ材の径方向がケーシング管の軸
芯方向に沿う姿勢にあるときのみ、該ケーシング管の外
面側から球面状内周面内への外側スリーブ材の通過を許
容する切欠部が形成されているとともに、前記切欠部を
通して挿入された外側スリーブ材が、球面状内周面内に
おいてケーシング管の軸芯と同芯状の姿勢に向き変更自
在に構成されている請求項２記載の伸縮管継手。3. A spherical inner peripheral surface formed on the casing tube is fitted to the spherical outer peripheral surface formed on the outer sleeve material so as to be relatively swingable, and an inner peripheral surface of the casing tube is fitted on the inner peripheral surface. Only when the radial direction of the outer sleeve material is in a posture along the axial direction of the casing tube, a notch is formed which allows the outer sleeve material to pass from the outer surface side of the casing tube into the spherical inner peripheral surface. The telescopic tube according to claim 2, wherein the outer sleeve material inserted through the notch portion is configured to be able to change its orientation to a position concentric with the axis of the casing tube within the spherical inner peripheral surface. Fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15075197A JP3184481B2 (en) | 1997-06-09 | 1997-06-09 | Assembly method of expansion joint and expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15075197A JP3184481B2 (en) | 1997-06-09 | 1997-06-09 | Assembly method of expansion joint and expansion joint |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1089171A Division JP2698159B2 (en) | 1989-04-07 | 1989-04-07 | Assembly method of expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1054487A true JPH1054487A (en) | 1998-02-24 |
| JP3184481B2 JP3184481B2 (en) | 2001-07-09 |
Family
ID=15503630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15075197A Expired - Lifetime JP3184481B2 (en) | 1997-06-09 | 1997-06-09 | Assembly method of expansion joint and expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3184481B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6883550B2 (en) | 2002-08-29 | 2005-04-26 | Waterworks Technology Development | Flexible pipe joint |
-
1997
- 1997-06-09 JP JP15075197A patent/JP3184481B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6883550B2 (en) | 2002-08-29 | 2005-04-26 | Waterworks Technology Development | Flexible pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3184481B2 (en) | 2001-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6457991B2 (en) | Cartridge ferrule with axial load | |
| CA2685502C (en) | Non-bolt joint structure and method for producing non-bolt joint structure | |
| US11898675B2 (en) | Pipe element coupler and coupling method thereof | |
| US5398218A (en) | Connection of a band to a watch case | |
| KR20040004097A (en) | Pipe joint structure and method for fabricating the same | |
| EP1074778A1 (en) | Tube joint | |
| JPH1054487A (en) | Assembling method for expansion pipe coupling and expansion pipe coupling | |
| JP2669723B2 (en) | Expansion joint | |
| US6551009B2 (en) | Spline connection for limited access space and method of assembly and disassembly | |
| JP2698159B2 (en) | Assembly method of expansion joint | |
| JP3435854B2 (en) | Universal joint | |
| JP5323594B2 (en) | Retaining ring for fittings | |
| WO2024079920A1 (en) | Method for assembling expansion pipe joint, and temporary fixing structure for lock ring | |
| JP3247564B2 (en) | Sealing device and manufacturing method thereof | |
| JP6914302B2 (en) | Pipe fitting | |
| JP3499894B2 (en) | Fitting for bellows tube | |
| JP7498655B2 (en) | Pipe bending control structure between joints, and joint device | |
| JP6813183B2 (en) | Assembling method of pipe fittings and pipe fittings | |
| JP3197655B2 (en) | Pipe joint structure | |
| JP4385313B2 (en) | Sleeve type fitting | |
| JP2892312B2 (en) | Mounting method of cylinder bottom member | |
| IT202100020828A1 (en) | Flange | |
| EP1686296A1 (en) | Lip seal and manufacturing method thereof | |
| JPS6014058Y2 (en) | Bearing structure of operating valve shaft in gate valve | |
| JP2000146064A (en) | Joint metal fitting for hose |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080427 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090427 Year of fee payment: 8 |
|
| EXPY | Cancellation because of completion of term |