JP4889458B2 - Pipe fitting for branch member - Google Patents

Pipe fitting for branch member Download PDF

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JP4889458B2
JP4889458B2 JP2006326149A JP2006326149A JP4889458B2 JP 4889458 B2 JP4889458 B2 JP 4889458B2 JP 2006326149 A JP2006326149 A JP 2006326149A JP 2006326149 A JP2006326149 A JP 2006326149A JP 4889458 B2 JP4889458 B2 JP 4889458B2
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port
receiving port
peripheral surface
pipe joint
circumferential direction
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JP2008138787A (en
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実 澤田
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Cosmo Koki Co Ltd
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Description

本発明は、流体管から分岐して接続された分岐部材の端部を構成する受口を備えた受口管と、該受口の内方に所定長さで嵌挿される嵌挿部を有する挿口を備えた挿口管と、該挿口の嵌挿部の外面と前記受口の内面との間隙を周方向に沿って水密的に密封するリング状のシール部材と、を備えた分岐部材用の管継手に関する。   The present invention has a receiving pipe having a receiving port that constitutes an end portion of a branching member that is branched and connected from a fluid pipe, and an insertion portion that is inserted into the receiving port at a predetermined length. A bifurcation comprising an insertion tube provided with an insertion port, and a ring-shaped sealing member for watertightly sealing a gap between an outer surface of the insertion portion of the insertion port and an inner surface of the receiving port along a circumferential direction The present invention relates to a pipe joint for members.

フランジなどの接合部を有する接合体同士を接合された流体本管から分岐して接続された分岐部材の離脱防止機能を備えさせる従来の技術は、外周にパッキングが周設された挿口を受口に嵌挿し、離脱防止がなされているものがある（例えば、特許文献１参照）。   A conventional technique for providing a function of preventing separation of a branch member connected by branching a joined body having a joint portion such as a flange from a joined fluid main pipe receives an insertion port having a packing on the outer periphery. Some have been inserted into the mouth to prevent detachment (see, for example, Patent Document 1).

また、受口外面から内面へ貫通する雌ネジ孔を設け、挿口の外周面にはロックリング等の係止部材が設けられ、またこの係止部材よりも挿口の先端側の外周面に径方向に膨出する膨出部が周方向に沿って形成され、受口の内周には径方向に突起部が形成されている。そして雌ネジ孔に挿入された押しボルトを挿口の外周面に装着された係止部材に押圧することで、挿口の外周に形成される膨出部と受口の内周に形成される突起部が当接可能となり、挿口と受口の離脱防止がなされるものもある（例えば、特許文献２参照）。   Also, a female screw hole penetrating from the outer surface of the receiving port to the inner surface is provided, and a locking member such as a lock ring is provided on the outer peripheral surface of the insertion port. A bulging portion bulging in the radial direction is formed along the circumferential direction, and a protruding portion is formed in the radial direction on the inner periphery of the receiving port. Then, by pressing the push bolt inserted into the female screw hole against the locking member mounted on the outer peripheral surface of the insertion port, the bulging portion formed on the outer periphery of the insertion port and the inner periphery of the receiving port are formed. Some protrusions can come into contact with each other, so that the insertion port and the receiving port are prevented from being detached (see, for example, Patent Document 2).

特開平５−２４０３９０号公報（第６図）Japanese Patent Laid-Open No. 5-240390 (FIG. 6) 実開昭５９−５９５９０号公報（第１図）Japanese Utility Model Publication No. 59-59590 (FIG. 1)

しかしながら、特許文献１にあっては、分岐部材は流体本管に形成された孔部に連続して構成されているため、流体本管と分岐部材とにかけて流動する流体により、挿口と受口が離間する方向に大きな水圧がかかり、挿口外周にパッキングが周設された簡便な構造では、挿口と受口が離脱するおそれがある。   However, in Patent Document 1, since the branching member is configured to be continuous with the hole formed in the fluid main pipe, the inlet and the outlet are formed by the fluid flowing between the fluid main pipe and the branching member. In a simple structure in which a large water pressure is applied in the direction in which the gap is separated and a packing is provided around the outer periphery of the insertion opening, the insertion opening and the receiving opening may be detached.

また特許文献２にあっては、挿口の外周に形成される膨出部と受口の内周に形成される突起部の間に管軸方向に沿った間隙があるため、特許文献１の問題と同様、挿口と受口が離間する方向に大きな水圧がかかった際には、押しボルトが緩み、挿口と受口が管軸方向に移動するといった不安定な状態が生じるおそれもある。   Further, in Patent Document 2, since there is a gap along the tube axis direction between the bulging portion formed on the outer periphery of the insertion port and the protrusion formed on the inner periphery of the receiving port, Similar to the problem, when a large water pressure is applied in the direction in which the insertion port and the receiving port are separated from each other, an unstable state may occur in which the push bolt is loosened and the insertion port and the receiving port move in the tube axis direction. .

本発明は、このような問題点に着目してなされたもので、水圧の変動に影響を受けることなく、流体管の離脱が防止できる分岐部材用の管継手を提供することを目的とする。   The present invention has been made paying attention to such problems, and an object of the present invention is to provide a pipe joint for a branch member that can prevent the fluid pipe from being detached without being affected by fluctuations in water pressure.

上記課題を解決するために、本発明の請求項１に記載の分岐部材用の管継手は、
流体管から分岐して接続された分岐部材を構成する受口を備えた受口管と、該受口の内方に所定長さ嵌挿される嵌挿部を有する挿口を備えた挿口管と、該挿口の嵌挿部の外面と前記受口の内面との間隙を周方向に沿って水密的に密封するリング状のシール部材と、を備えた分岐部材用の管継手であって、
前記受口の端部の外周面に、径方向に膨出する受口膨出部が周方向に沿って形成されているとともに、前記挿口の嵌挿部を除いた外周面に、径方向に膨出する挿口膨出部が周方向に沿って形成されており、
前記受口膨出部及び前記挿口膨出部を収容する環状のカバーリングが、前記受口と前記挿口の軸方向への相対移動を拘束するようにして、前記両膨出部の外周に取付けられており、前記受口における開口端近傍の外周面に、前記カバーリングよりも径方向に膨出するとともに管軸方向に開口するボルト孔を有する受口フランジが、周方向に沿って形成されていることを特徴としている。
この特徴によれば、管継手を構成する受口と挿口とが、受口膨出部と挿口膨出部と当接させることで過挿入を止める。また、カバーリングが受口と挿口の軸方向への相対移動を拘束するようにして取付けられているため、流体管と分岐部材とにかけて流動する流体により発生する分岐部材における水圧の変動の影響を受けることなく、受口と挿口が離脱防止できる。そして、カバーリングよりも径方向に膨出する受口フランジを利用して、カバーリングの外面と当接可能にボルトをボルト孔に挿通することで、カバーリングの位置決めができるばかりか、このボルトにより、例えば地震等の不測の外力が生じても、カバーリングの外方側で動きを規制できる。 In order to solve the above problems, a pipe joint for a branching member according to claim 1 of the present invention is
An inlet tube provided with an inlet port having a receiving port constituting a branching member branched and connected from the fluid tube, and an insertion port having a fitting insertion portion to be inserted into the inner side of the predetermined length. And a ring-shaped seal member for watertightly sealing the gap between the outer surface of the insertion portion of the insertion port and the inner surface of the receiving port along the circumferential direction, ,
On the outer peripheral surface of the end portion of the receiving port, a receiving port bulging portion that bulges in the radial direction is formed along the circumferential direction, and on the outer peripheral surface excluding the fitting insertion portion of the inserting port, An insertion port bulging portion that bulges in is formed along the circumferential direction,
An annular cover ring that accommodates the receiving port bulging portion and the insertion port bulging portion restrains the relative movement of the receiving port and the insertion port in the axial direction, so that the outer periphery of both the bulging portions A receiving flange having a bolt hole that bulges more radially than the cover ring and opens in the tube axis direction on the outer peripheral surface in the vicinity of the opening end of the receiving port extends along the circumferential direction. It is characterized by being formed .
According to this feature, the receiving port and the insertion port constituting the pipe joint are brought into contact with the receiving port bulging portion and the insertion port bulging portion to stop over-insertion. In addition, since the cover ring is attached so as to restrain the relative movement of the receiving port and the insertion port in the axial direction, the influence of the fluctuation of the water pressure in the branch member generated by the fluid flowing between the fluid pipe and the branch member. The receiving port and the insertion port can be prevented from detaching without receiving. And by using the receiving flange that bulges in the radial direction from the cover ring, the bolt is inserted into the bolt hole so that it can come into contact with the outer surface of the cover ring. Thus, even if an unexpected external force such as an earthquake occurs, the movement can be regulated on the outer side of the cover ring.

本発明の請求項２に記載の分岐部材用の管継手は、請求項１に記載の分岐部材用の管継手であって、
前記カバーリングの一部は、前記受口膨出部と前記受口フランジとの間に嵌合されていることを特徴としている。
この特徴によれば、カバーリングの一部が、受口膨出部と受口フランジとの間に嵌合されていることにより、例えば地震等の不測の外力が生じても、カバーリングの内方側で動きを規制できる。 A pipe joint for a branch member according to claim 2 of the present invention is the pipe joint for a branch member according to claim 1 ,
A part of the cover ring is fitted between the receiving port bulging portion and the receiving port flange.
According to this feature, a part of the cover ring is fitted between the receiving port bulge and the receiving flange, so that even if an unexpected external force such as an earthquake occurs, The movement can be regulated on the side.

本発明の請求項３に記載の分岐部材用の管継手は、請求項１又は２に記載の分岐部材用の管継手であって、
前記受口膨出部及び前記挿口膨出部は略同じ外周面を有し、該外周面に前記カバーリングの内周面が当接していることを特徴としている。
この特徴によれば、受口膨出部及び挿口膨出部の外周面とカバーリングの内周面とが、当接しているため、カバーリングの径方向の位置決めを容易にでき、取付けやすいばかりか、受口管と挿口管の径方向の移動を規制できる。 A pipe joint for a branch member according to claim 3 of the present invention is the pipe joint for a branch member according to claim 1 or 2 ,
The receiving port bulging portion and the insertion port bulging portion have substantially the same outer peripheral surface, and the inner peripheral surface of the cover ring is in contact with the outer peripheral surface.
According to this feature, since the outer peripheral surface of the receiving port bulging portion and the insertion bulging portion and the inner peripheral surface of the cover ring are in contact with each other, the cover ring can be easily positioned in the radial direction and can be easily mounted. In addition, the radial movement of the receiving tube and the insertion tube can be restricted.

本発明の請求項４に記載の分岐部材用の管継手は、請求項３に記載の分岐部材用の管継手であって、
前記カバーリングの内周面に前記挿口膨出部と前記受口膨出部の各々を挟持する二つの挟持部が形成されており、前記挿口膨出部側の挟持部の方が前記受口膨出部側の挟持部より大きい面積を有していることを特徴としている。
この特徴によれば、挿口膨出部側の挟持部の方が受口膨出部側の挟持部より大きい面積を有していることで、挿口膨出部側の挟持部が、受口管の管厚分多く挿口膨出部を挟持し得るため、例えば地震等の不測の大きな外力が生じても、挿口膨出部側の挟持部を利用して耐圧でき、受口管と挿口管の軸方向の移動を規制できる。 A pipe joint for a branch member according to claim 4 of the present invention is the pipe joint for a branch member according to claim 3 ,
Two sandwiching portions are formed on the inner peripheral surface of the cover ring so as to sandwich each of the insertion bulge portion and the receptacle bulge portion, and the clamping portion on the insertion bulge portion side is more It has a larger area than the holding part on the side of the receiving port bulging part.
According to this feature, the clamping portion on the insertion bulge portion side has a larger area than the clamping portion on the receptacle bulge portion side, so that the clamping portion on the insertion bulge portion side receives the receiving portion. Since the insertion bulge can be clamped by as much as the tube thickness of the mouth tube, even if an unexpected large external force such as an earthquake occurs, it can withstand pressure by using the clamping part on the side of the insertion bulge. And the axial movement of the intubation tube can be restricted.

本発明の請求項５に記載の分岐部材用の管継手は、請求項１ないし４のいずれかに記載の分岐部材用の管継手であって、
前記挿口膨出部に、前記シール部材に向けて開口した開口部が開設されていることを特徴としている。
この特徴によれば、挿口の嵌挿部を受口の内面に嵌挿することで、嵌挿部の外面と受口の内面との間隙を密封するシール部材が、挿口膨出部により外方から隠れている状況下でも、挿口膨出部に形成された開口部を利用し、例えば、開口部に挿通可能な薄板状体をシール部材に向けて挿通し当接するなどして、シール部材が間隙を所定位置において密封しているか否か確認できる。 A pipe joint for a branch member according to claim 5 of the present invention is the pipe joint for a branch member according to any one of claims 1 to 4 ,
In the insertion bulge portion, an opening portion opened toward the seal member is provided.
According to this feature, the sealing member that seals the gap between the outer surface of the insertion portion and the inner surface of the reception port is inserted into the inner surface of the reception port by inserting the insertion portion of the insertion port into the inner surface of the reception port. Even under circumstances hidden from the outside, using the opening formed in the insertion bulge part, for example, by inserting a thin plate-like body that can be inserted into the opening part toward the sealing member and abutting it, It can be confirmed whether or not the seal member seals the gap at a predetermined position.

本発明の請求項６に記載の分岐部材用の管継手は、請求項１ないし５のいずれかに記載の分岐部材用の管継手であって、
前記カバーリングは、互いの周方向の対向端部同士を接続して環状に形成される複数のカバー片から成り、該複数のカバー片は、夫々のカバー片が一方の対向端部に嵌合凸部と他方の対向端部に嵌合凹部とを有する略同一の形状に形成されており、周方向に隣り合ったカバー片の嵌合凸部と嵌合凹部とを嵌合して接続していることを特徴としている。
この特徴によれば、カバーリングを構成する夫々のカバー片が、周方向に隣り合ったカバー片と、嵌合凸部と嵌合凹部とにより凹凸嵌合しているため、カバー片同士の接続前の位置決めを容易にできる。 A pipe joint for a branch member according to claim 6 of the present invention is the pipe joint for a branch member according to any one of claims 1 to 5 ,
The cover ring includes a plurality of cover pieces formed in an annular shape by connecting opposite end portions in the circumferential direction, and each of the cover pieces is fitted to one opposite end portion. Formed in approximately the same shape having a convex part and a fitting concave part at the other opposing end, and the fitting convex part and the fitting concave part of the cover pieces adjacent in the circumferential direction are fitted and connected. It is characterized by having.
According to this feature, each cover piece constituting the cover ring is unevenly fitted by the cover pieces adjacent to each other in the circumferential direction, and the fitting convex part and the fitting concave part. Previous positioning can be facilitated.

本発明の実施例を以下に説明する。   Examples of the present invention will be described below.

本発明の実施例を図面に基づいて説明すると、先ず図１は、本発明の実施例１における管継手の全体像を示す一部断面図である。図２は、管継手上面を示す平面図である。図３は、図１のＡ−Ａ線を境に方向視した断面図である。図４は、図１における一部拡大断面図である。   DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. First, FIG. FIG. 2 is a plan view showing the upper surface of the pipe joint. FIG. 3 is a cross-sectional view taken along line AA in FIG. 4 is a partially enlarged sectional view of FIG.

図１ないし３に示されるように、内部に水道などの流体が流れる流体管としての本管３０は、図１の紙面を貫通するよう設けられ、分岐部材５０は、本管３０から分岐された流体管路を構成するとともに、本管３０に対して略直交、即ち図示左右方向に接続される。   As shown in FIGS. 1 to 3, the main pipe 30 as a fluid pipe through which a fluid such as tap water flows is provided so as to penetrate the paper surface of FIG. 1, and the branch member 50 is branched from the main pipe 30. While constituting a fluid pipe line, it is connected to the main pipe 30 substantially orthogonally, that is, in the horizontal direction in the figure.

分岐部材５０は、主として制水弁２０と、挿口管１と、挿口管１の側方である図示右側に構成される継管３３と、制水弁２０の側方である図示左側に構成される割Ｔ字管３１と、からなる。   The branch member 50 mainly includes the water control valve 20, the insertion tube 1, the connecting pipe 33 configured on the right side of the drawing that is the side of the insertion tube 1, and the left side of the drawing that is the side of the water control valve 20. The split T-shaped tube 31 is configured.

制水弁２０は、図１に示されるように左側に内部に穿設されたＴ字管１１の挿口端部１４と、右側に受口１２とを有し、制水弁２０の内部には回動ネジ２４の回動により上下動される弁体２６が設けられている。Ｔ字管１１の上部には弁蓋２３及び抑え板２１が形成されている。   As shown in FIG. 1, the water control valve 20 has an insertion end portion 14 of a T-shaped tube 11 drilled inside on the left side and a receiving port 12 on the right side. Is provided with a valve body 26 that is moved up and down by the rotation of the rotation screw 24. A valve lid 23 and a holding plate 21 are formed on the top of the T-shaped tube 11.

Ｔ字管１１は、その上面が弁蓋２３の底面と当接され、ボルト・ナット等で弁蓋２３と締結され、回動ネジ２４は、弁蓋２３を回動自在且つ水密に貫通して、その上端部を弁蓋２３の上方に突出して上下方向に取付けられている。   The top surface of the T-shaped tube 11 is in contact with the bottom surface of the valve lid 23 and is fastened to the valve lid 23 with bolts, nuts, etc., and the rotation screw 24 penetrates the valve lid 23 in a freely and watertight manner. The upper end of the valve lid 23 protrudes upward and is attached in the vertical direction.

抑え板２１は、弁蓋２３の上端面にボルトで固定され、回動ネジ２４の抜出しを阻止する。２４ｂは、回動ネジ２４の上端部を除いて略全長に亘ってその周面が螺設されたネジ部であり、回動が阻止され、上下方向に移動可能であるネジこま２５は、ネジ部２４ｂに螺合されており、回動ネジ２４の上端部に形成された回動操作部２４ａを回動させると、それに応じてネジ部２４ｂが回動することにより、ネジこま２５に一体的に取付けられた弁体２６がＴ字管１１内において上下動可能となる。   The holding plate 21 is fixed to the upper end surface of the valve lid 23 with a bolt and prevents the rotation screw 24 from being pulled out. Reference numeral 24b denotes a screw portion whose peripheral surface is screwed over substantially the entire length except for the upper end portion of the rotation screw 24. The screw top 25 that is prevented from rotating and is movable in the vertical direction is When the turning operation portion 24a formed on the upper end portion of the turning screw 24 is turned, the screw portion 24b is turned accordingly, thereby being integrated with the screw top 25. Can be moved up and down in the T-shaped tube 11.

上記構成により、弁体２６が上下動することで制水弁２０が機能する。即ち、弁体２６を上方に移動することで管路を開放し、また下方に移動させることで管路を遮断する。   With the above configuration, the water control valve 20 functions as the valve body 26 moves up and down. That is, the pipeline is opened by moving the valve body 26 upward, and the pipeline is blocked by moving downward.

割Ｔ字管３１は、本管３０の外周を覆設するとともに、Ｔ字管１１に向かって開口した開口部Ｔを有しており、この開口部ＴがＴ字管１１の挿口端部１４に嵌挿される。   The split T-shaped tube 31 covers the outer periphery of the main tube 30 and has an opening T that opens toward the T-shaped tube 11, and this opening T is the insertion end of the T-shaped tube 11. 14 is inserted.

また割Ｔ字管３１の開口部Ｔには、突出したフランジ部Ｗが周方向に沿って形成されており、Ｔ字管１１の挿口端部１４が開口部Ｔに嵌挿されて、このフランジ部Ｗが挿口端部１４側に周方向に沿って突出したフランジ部Ｖと当接されるとともに、フランジ部Ｖ、Ｗに設けられたボルト孔にボルト・ナット４９が挿入され、締結される。また開口部Ｔの内周面には、周方向に沿って形成される収容溝３８が形成され、この収容溝３８にリング状の弾性体であるシールリング３２が嵌合され、Ｔ字管１１と割Ｔ字管３１の水密性が保たれている。   Further, a projecting flange portion W is formed along the circumferential direction at the opening T of the split T-shaped tube 31, and the insertion end 14 of the T-shaped tube 11 is fitted into the opening T, and this The flange portion W is brought into contact with the flange portion V protruding in the circumferential direction toward the insertion end portion 14, and a bolt / nut 49 is inserted into a bolt hole provided in the flange portions V and W and fastened. The An accommodation groove 38 formed along the circumferential direction is formed on the inner peripheral surface of the opening T, and a seal ring 32, which is a ring-shaped elastic body, is fitted into the accommodation groove 38. And the watertightness of the split T-shaped tube 31 is maintained.

一方、図１に示されるように制水弁２０の右側には、挿口管１と継管３３とで構成された球継手が配置されている。具体的には、継管３３に向かって開口した挿口管１の挿口端部４が、継管３３の開口部Ｕに嵌挿されるとともに、継管３３に周方向に沿って形成された鉤部３７が挿口端部４の外周面に設けたリング体３９の周方向に沿って形成された収容溝３６に嵌合される。また、継管３３の内周面には、周方向に沿って形成された収容溝３５にリング状の弾性体であるシールリング３４が嵌合されることにより、球継手を構成し、挿口管１と継管３３の水密性が保たれている。   On the other hand, as shown in FIG. 1, on the right side of the water control valve 20, a ball joint composed of the insertion tube 1 and the connecting tube 33 is arranged. Specifically, the insertion end 4 of the insertion tube 1 that opens toward the connection pipe 33 is fitted into the opening U of the connection pipe 33 and is formed in the connection pipe 33 along the circumferential direction. The flange portion 37 is fitted into a receiving groove 36 formed along the circumferential direction of the ring body 39 provided on the outer peripheral surface of the insertion end 4. Further, a ball joint is formed on the inner peripheral surface of the connecting pipe 33 by fitting a seal ring 34, which is a ring-shaped elastic body, into an accommodation groove 35 formed along the circumferential direction. The water tightness of the pipe 1 and the connecting pipe 33 is maintained.

そして、図１において本発明における管継手について説明すると、Ｔ字管１１の右側の管路部は受口管１５として構成され、その大部分は挿口管１の受口１２として形成されている。この受口１２の外周には、径方向に膨出するとともに管軸方向に開口する雌ネジが螺設されたボルト孔１８を所定間隔で有する受口フランジ１７が周方向に沿って形成されている。また受口１２の内周には、周方向に形成された収容溝８にリング状の弾性体であるシール部材９が周方向に沿って配置され、嵌挿部５を有する挿口管１の挿口２が受口１２に嵌挿され、シール部材９により挿口２の外周面と受口１２の内周面の水密性が確保される。   1, the pipe joint on the right side of the T-shaped tube 11 is configured as a receiving tube 15, and most of the tube is formed as a receiving port 12 of the insertion tube 1. . On the outer periphery of the receptacle 12, a receptacle flange 17 is formed along the circumferential direction having bolt holes 18, which are bulged in the radial direction and screwed with female threads that open in the tube axis direction, at predetermined intervals. Yes. A seal member 9, which is a ring-shaped elastic body, is disposed along the circumferential direction in a receiving groove 8 formed in the circumferential direction on the inner periphery of the receiving port 12, and includes the insertion tube 1 having a fitting insertion portion 5. The insertion port 2 is fitted into the receiving port 12, and the seal member 9 ensures water tightness between the outer peripheral surface of the insertion port 2 and the inner peripheral surface of the receiving port 12.

受口１２の端部の外周面に、径方向に膨出する受口膨出部１３が周方向に沿って形成されており、挿口２の外周面には、径方向に膨出する挿口膨出部３が周方向に沿って形成されており、この挿口膨出部３の挿口２側には、挿口２の内周面に沿って周設したシール部材９を挿口２の外方側から窺えるような開口部６が穿設されている。   A receiving port bulging portion 13 that bulges in the radial direction is formed on the outer peripheral surface of the end portion of the receiving port 12 along the circumferential direction, and an insertion that bulges in the radial direction on the outer peripheral surface of the insertion port 2. The mouth bulging portion 3 is formed along the circumferential direction, and a seal member 9 provided around the inner peripheral surface of the insertion port 2 is inserted into the insertion port 2 side of the insertion port bulging portion 3. An opening 6 that can be seen from the outer side of 2 is formed.

また受口膨出部１３と挿口膨出部３の外側には、直径方向に２分割された半円形状のカバー片４１、４２からなる挟持部材としてのカバーリング４０が取付けられる。このカバー片４１、４２は２つで１組として受口膨出部１３、挿口膨出部３の外方から装着して、受口膨出部１３と挿口膨出部３の外周全体を覆う。またこのカバー片４１、４２の内方には、受口膨出部１３と挿口膨出部３を管軸方向への相対移動を拘束する一体に収容する収容凹部４７が形成されている。   Further, a cover ring 40 as a clamping member made up of semicircular cover pieces 41 and 42 divided into two in the diametrical direction is attached to the outside of the mouth bulging portion 13 and the insertion bulging portion 3. Two cover pieces 41 and 42 are attached as a set from the outside of the receiving port bulging portion 13 and the insertion port bulging portion 3, and the entire outer periphery of the receiving port bulging portion 13 and the insertion port bulging portion 3. Cover. In addition, an accommodation recess 47 that integrally accommodates the receiving port bulging portion 13 and the insertion port bulging portion 3 to restrain relative movement in the tube axis direction is formed inside the cover pieces 41 and 42.

ちなみに受口膨出部１３の外周面と挿口膨出部３の外周面は略同じ、すなわち略面一で形成され、この挿口膨出部３の外周面及び受口膨出部１３の外周面と、前記した収容凹部４７を形成する内周面とが、当接するよう構成されていると好ましい。   Incidentally, the outer peripheral surface of the receiving port bulging portion 13 and the outer peripheral surface of the insertion port bulging portion 3 are substantially the same, i.e., substantially flush with each other. It is preferable that the outer peripheral surface and the inner peripheral surface forming the above-described housing recess 47 are configured to contact each other.

このようにすることで、受口膨出部１３及び挿口膨出部３の外周面と収容凹部４７を形成する内周面とが当接しているため、カバー片４１、４２の径方向の位置決めを容易にでき、取付けやすいばかりか、受口管１５と挿口管２の径方向の移動を規制できる。   By doing in this way, since the outer peripheral surface of the receptacle bulging part 13 and the insertion bulging part 3 and the inner peripheral surface which forms the accommodation recessed part 47 are contact | abutting, the radial direction of the cover pieces 41 and 42 is carried out. The positioning can be facilitated and the mounting is easy, and the radial movement of the receiving tube 15 and the insertion tube 2 can be restricted.

カバー片４１、４２は同一の構造をなし、金属製またはダクタイル鋳鉄等の鋳物からなる材質から構成される。図３において半円形状のカバー片４１の左右両端部には、それぞれ左右方向に延びる延設部４３ｂ、４３ａが形成されているとともに、カバー片４２の左右両端部にも、延設部４３ｂ、４３ａに対応するように、それぞれ左右方向に延びる延設部４４ａ、４４ｂが形成されている。この延設部４３ａ、４４ｂ、そして延設部４３ｂ、４４ａにそれぞれ上下方向に略同軸に貫通した挿通孔５１、５２がそれぞれ形成されており、また延設部４３ａ、４４ａにおいては、カバー片４２、４１に対向して突出する嵌合凸部６１、６２がそれぞれ周方向に沿って形成され、延設部４３ｂ、４４ｂには、嵌合凸部６２、６１を収容する嵌合凹部６３、６４がそれぞれ周方向に沿って形成される。   The cover pieces 41 and 42 have the same structure and are made of a material made of a casting made of metal or ductile cast iron. In FIG. 3, extension portions 43 b and 43 a extending in the left-right direction are formed at the left and right ends of the semicircular cover piece 41, and the extension portions 43 b and 43 a are also provided at the left and right ends of the cover piece 42. Extending portions 44a and 44b extending in the left-right direction are formed so as to correspond to 43a. The extending portions 43a, 44b and the extending portions 43b, 44a are respectively formed with insertion holes 51, 52 penetrating substantially coaxially in the vertical direction. In the extending portions 43a, 44a, the cover piece 42 is formed. , 41 are formed along the circumferential direction so as to project opposite to the protrusions 41, 41. The extending portions 43 b, 44 b have fitting recesses 63, 64 for receiving the fitting protrusions 62, 61. Are formed along the circumferential direction.

この延設部４３ａ、４４ｂ同士、そして延設部４３ｂ、４４ａ同士が接合され、それぞれＴ頭ボルト・ナット４８で締結することで、カバー片４１、４２が合体でき、嵌合凸部６１、６２が嵌合凹部６４、６３にそれぞれ嵌合される。   The extended portions 43a and 44b and the extended portions 43b and 44a are joined to each other and fastened with T-head bolts and nuts 48, so that the cover pieces 41 and 42 can be combined, and the fitting convex portions 61 and 62 are joined. Are fitted into the fitting recesses 64 and 63, respectively.

このようにすることで、カバー片４１、４２の嵌合凸部６１、６２と嵌合凹部６４、６３とにより凹凸嵌合しているため、カバー片４１、４２同士の接続前の位置決めを容易にできる。また略同一の形状をした複数のカバー片４１、４２でカバーリング４０が構成されているため、カバーリング４０の製造コストが低減される。ちなみに本実施例においては、カバーリング４０は、直径方向に２分割された半円形状のカバー片４１、４２で構成されているが、これに限らず、３分割若しくはこれ以上の多数の分割構造で構成されていてもよい。   By doing so, since the concave and convex fitting is performed by the fitting convex portions 61 and 62 and the fitting concave portions 64 and 63 of the cover pieces 41 and 42, it is easy to position the cover pieces 41 and 42 before connection. Can be. Further, since the cover ring 40 is configured by the plurality of cover pieces 41 and 42 having substantially the same shape, the manufacturing cost of the cover ring 40 is reduced. Incidentally, in the present embodiment, the cover ring 40 is composed of semicircular cover pieces 41 and 42 that are divided into two in the diametrical direction. However, the present invention is not limited to this, and many divided structures of three or more are provided. It may be comprised.

カバー片４１、４２の前記した収容凹部４７は、側断面視形状が挿口２と受口１２の外周面に向かって開口した略コ字形状であり、カバー片４１（４２）には、図１の左右方向にカバー片４１（４２）の内周面に挿口膨出部３と受口膨出部１３の各々を挟持する二つの挟持部が形成されている。このカバー片４１（４２）の一方側の挟持部として受口膨出部１３と受口フランジ１７との間に嵌合する鉤部４６が、周方向に沿って受口１２の外周面に向かって延設されており、また他方側の挟持部として半円部４５が周方向に沿って挿口２の外周面に向かって延設されている。ここで本実施例においては、挿口膨出部３の図１の右側側面と半円部４５の内方側の側面とが、当接しており、且つ管軸方向に対して略直交している。また、受口膨出部１３の図１の左側側面と鉤部４６の内方側の側面とが、当接しており、且つ管軸方向に対して略直交している。   The above-described receiving recesses 47 of the cover pieces 41 and 42 have a substantially U-shaped side sectional view opening toward the outer peripheral surfaces of the insertion opening 2 and the receiving opening 12, and the cover piece 41 (42) Two sandwiching portions are formed on the inner peripheral surface of the cover piece 41 (42) in the left-right direction 1 so as to sandwich each of the insertion bulging portion 3 and the receiving mouth bulging portion 13. A flange 46 fitted between the receiving port bulging portion 13 and the receiving flange 17 as a holding portion on one side of the cover piece 41 (42) faces the outer peripheral surface of the receiving port 12 along the circumferential direction. A semicircular portion 45 is extended toward the outer peripheral surface of the insertion slot 2 along the circumferential direction as a holding portion on the other side. Here, in this embodiment, the right side surface in FIG. 1 of the insertion bulge portion 3 and the inner side surface of the semicircular portion 45 are in contact with each other and substantially orthogonal to the tube axis direction. Yes. Further, the left side surface of the receiving port bulging portion 13 in FIG. 1 and the inner side surface of the flange portion 46 are in contact with each other and are substantially orthogonal to the tube axis direction.

このようにすることで、受口膨出部１３と受口フランジ１７との間に嵌合される鉤部４６により、受口１２とカバー片４１、４２との管軸方向の相対移動が規制されるため、カバー片４１、４２を取付ける際、軸方向の移動が規制でき、Ｔ頭ボルト・ナット４８の芯合わせを容易に行える。   By doing so, relative movement in the tube axis direction between the receiving port 12 and the cover pieces 41 and 42 is restricted by the flange 46 fitted between the receiving port bulging portion 13 and the receiving flange 17. Therefore, when the cover pieces 41 and 42 are attached, the movement in the axial direction can be restricted, and the centering of the T-head bolt and nut 48 can be easily performed.

また本実施例のように半円部４５が挿口膨出部３を挿口２の外周面に向かって挟持する面積の方が、鉤部４６が受口膨出部１３を受口１２の外周面に向かって挟持する面積よりも大きいと好ましい。   Further, as in the present embodiment, the area where the semicircular portion 45 sandwiches the insertion port bulge portion 3 toward the outer peripheral surface of the insertion port 2 has the flange portion 46 serving as the reception port bulge portion 13. The area is preferably larger than the area sandwiched toward the outer peripheral surface.

このようにすることで、半円部４５が挿口膨出部３を挟持する面積の方が、鉤部４６が受口膨出部１３を挟持する面積より大きいことで、半円部４５が、受口管１５の管厚分多く挿口膨出部３を挟持し得るため、例えば地震等の不測の大きな外力が生じても、半円部４５を利用して耐圧でき、受口管１５と挿口管２の軸方向の移動を規制できる。   By doing in this way, since the area where the semicircle part 45 clamps the insertion opening bulging part 3 is larger than the area where the collar part 46 clamps the receiving opening bulging part 13, the semicircle part 45 becomes Since the insertion bulging portion 3 can be sandwiched by as much as the tube thickness of the receiving tube 15, even if an unexpected large external force such as an earthquake occurs, the semicircular portion 45 can be used to withstand pressure, and the receiving tube 15 And the movement of the insertion tube 2 in the axial direction can be restricted.

なお、図１における受口フランジ１７、１７に形成されたボルト孔１８、１８にボルト１９、１９をカバー片４１、４２の外面と当接可能に取付けることにより、カバー片４１、４２よりも径方向に膨出する受口フランジ１７、１７を利用してカバー片４１、４２の位置決めができるばかりか、地震等の不測の外力が生じても、カバー片４１、４２の外方側で動きを規制し、上下方向に対するカバー片４１、４２の脱落も防止できる。   In addition, the bolts 19 and 19 are attached to the bolt holes 18 and 18 formed in the receiving flanges 17 and 17 in FIG. 1 so as to be in contact with the outer surfaces of the cover pieces 41 and 42, so that the diameter is larger than that of the cover pieces 41 and 42. The cover pieces 41 and 42 can be positioned by using the receiving flanges 17 and 17 that bulge in the direction, and even if an unexpected external force such as an earthquake occurs, the cover pieces 41 and 42 can move on the outer side. The cover pieces 41 and 42 can be prevented from falling off in the vertical direction.

このように管継手が、上記に示した構造を有することにより、管継手を構成する受口１２と挿口２とが、受口膨出部１３と挿口膨出部３と当接させることで過挿入を止める。またカバーリングが受口１２と挿口２の軸方向への相対移動を拘束するようにして取付けられているため、本管３０と分岐部材５０とにかけて流動する流体により発生する分岐部材５０における水圧の変動の影響を受けることなく、受口１２と挿口２が離脱防止できる。   As described above, the pipe joint has the structure shown above, so that the receiving port 12 and the insertion port 2 constituting the pipe joint are brought into contact with the receiving port bulging portion 13 and the insertion port bulging portion 3. To stop overinsertion. Further, since the cover ring is attached so as to restrain the relative movement of the receiving port 12 and the insertion port 2 in the axial direction, the water pressure in the branch member 50 generated by the fluid flowing between the main pipe 30 and the branch member 50. The receiving opening 12 and the insertion opening 2 can be prevented from detaching without being affected by the fluctuations of.

なお図４に示されるように、挿口膨出部３と受口膨出部１３の当接面である管軸方向に形成する端面５５と上述したシール部材９の図示右側の管軸方向に形成する端面５８間には、挿口２の外周面と受口１２の内周面により僅かに周方向に沿った隙間６０が形成される。この隙間６０と連通し、且つ金属などの薄板が挿入できるよう挿口膨出部３の一部に開口部６が設けられている。   As shown in FIG. 4, the end surface 55 formed in the tube axis direction, which is the contact surface between the insertion port bulging portion 3 and the receiving port bulging portion 13, and the above-described seal member 9 on the right side in the illustrated tube axis direction. Between the end surfaces 58 to be formed, a gap 60 slightly along the circumferential direction is formed by the outer peripheral surface of the insertion port 2 and the inner peripheral surface of the receiving port 12. An opening 6 is provided in a part of the insertion bulging portion 3 so as to communicate with the gap 60 and allow insertion of a thin plate of metal or the like.

このようにすることで、嵌挿部５の外面と受口１２の内面との収容溝８を密封するシール部材９が、挿口膨出部３により外方から隠れている状況下でも、挿口膨出部３に形成された開口部６を利用し、例えば、開口部６に挿通可能な薄板状体をシール部材９に向けて挿通し、当接するなどして、シール部材９が収容溝８を所定位置において密封しているか否か確認できる。   In this way, even when the seal member 9 that seals the housing groove 8 between the outer surface of the insertion portion 5 and the inner surface of the receiving port 12 is hidden from the outside by the insertion bulge portion 3, the insertion is possible. Using the opening 6 formed in the mouth bulging portion 3, for example, a thin plate-like body that can be inserted into the opening 6 is inserted toward and contacted with the sealing member 9, so that the sealing member 9 is accommodated in the receiving groove. Whether or not 8 is sealed at a predetermined position can be confirmed.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。   Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

上記実施例のカバーリング４０は、直径方向に２分割された半円形状のカバー片４１、４２で構成されているが、これに限らず、図１の紙面に垂直に２分割、３分割若しくはこれ以上の多分割構造のカバー片でカバーリングが構成されてもよい。   The cover ring 40 of the above embodiment is composed of semicircular cover pieces 41 and 42 divided into two in the diametrical direction, but is not limited thereto, and is divided into two, three or three perpendicular to the paper surface of FIG. The cover ring may be configured by a cover piece having a multi-divided structure beyond this.

また上記実施例においては、挿口膨出部３の図１の右側側面及び半円部４５の内方側の側面と、受口膨出部１３の図１の左側側面及び鉤部４６の内方側の側面とが、管軸方向に対して略直交し、それぞれ当接しているが、これに限らず、カバー片４１（４２）により挿口２と受口１２の軸方向への相対移動を拘束するなら、例えば挿口膨出部３の図１の右側側面及び受口膨出部１３の図１の左側側面がテーパー面で形成され、カバー片４１（４２）が挿口膨出部３と受口膨出部１３を挟持できるよう、それらテーパー面に対応して半円部４５の内方側側面及び鉤部４６の内方側側面が、テーパー面を形成してもよい。   In the above-described embodiment, the right side surface of the insertion bulging portion 3 in FIG. 1 and the inner side surface of the semicircular portion 45, the left side surface of the receiving port bulging portion 13 in FIG. However, the present invention is not limited to this, and the relative movement of the insertion port 2 and the receiving port 12 in the axial direction is not limited thereto. 1, for example, the right side surface in FIG. 1 of the insertion port bulging portion 3 and the left side surface in FIG. 1 of the receiving port bulging portion 13 are formed with a tapered surface, and the cover piece 41 (42) is formed in the insertion port bulging portion. The inner side surface of the semicircular portion 45 and the inner side surface of the flange portion 46 may form a tapered surface so as to be able to sandwich the 3 and the receiving port bulging portion 13.

本発明の実施例１における管継手の全体像を示す一部断面図である。It is a partial cross section figure which shows the whole image of the pipe joint in Example 1 of this invention. 管継手上面を示す平面図である。It is a top view which shows a pipe joint upper surface. 図１のＡ−Ａ線を境に方向視した断面図である。FIG. 2 is a cross-sectional view viewed from the line AA in FIG. 1. 図１における一部拡大断面図である。It is a partially expanded sectional view in FIG.

符号の説明Explanation of symbols

１ 挿口管
２ 挿口
３ 挿口膨出部
５ 嵌挿部
６ 開口部
９ シール部材
１０ 間隙
１２ 受口
１３ 受口膨出部
１５ 受口管
１７ 受口フランジ
１８ ボルト孔
３０ 本管（流体管）
４０ カバーリング
４１ カバー片
４２ カバー片
４５ 半円部（挟持部）
４６ 鉤部（挟持部）
４７ 収容凹部
５０ 分岐部材
６１ 嵌合凸部
６２ 嵌合凸部
６３ 嵌合凹部
６４ 嵌合凹部 DESCRIPTION OF SYMBOLS 1 Insertion tube 2 Insertion port 3 Insertion bulging part 5 Insertion insertion part 6 Opening part 9 Sealing member 10 Gap 12 Receptacle 13 Receptacle bulging part 15 Receptacle pipe 17 Receptacle flange 18 Bolt hole 30 Main pipe (fluid tube)
40 Cover ring 41 Cover piece 42 Cover piece 45 Semicircular part (clamping part)
46 Buttocks (Clamping part)
47 Housing recess 50 Branching member 61 Fitting protrusion 62 Fitting protrusion 63 Fitting recess 64 Fitting recess

Claims (6)

流体管から分岐して接続された分岐部材を構成する受口を備えた受口管と、該受口の内方に所定長さ嵌挿される嵌挿部を有する挿口を備えた挿口管と、該挿口の嵌挿部の外面と前記受口の内面との間隙を周方向に沿って水密的に密封するリング状のシール部材と、を備えた分岐部材用の管継手であって、
前記受口の端部の外周面に、径方向に膨出する受口膨出部が周方向に沿って形成されているとともに、前記挿口の嵌挿部を除いた外周面に、径方向に膨出する挿口膨出部が周方向に沿って形成されており、
前記受口膨出部及び前記挿口膨出部を収容する環状のカバーリングが、前記受口と前記挿口の軸方向への相対移動を拘束するようにして、前記両膨出部の外周に取付けられており、
前記受口における開口端近傍の外周面に、前記カバーリングよりも径方向に膨出するとともに管軸方向に開口するボルト孔を有する受口フランジが、周方向に沿って形成されて
いることを特徴とする分岐部材用の管継手。 An inlet tube provided with an inlet port having a receiving port constituting a branching member branched and connected from the fluid tube, and an insertion port having a fitting insertion portion to be inserted into the inner side of the predetermined length. And a ring-shaped seal member for watertightly sealing the gap between the outer surface of the insertion portion of the insertion port and the inner surface of the receiving port along the circumferential direction, ,
On the outer peripheral surface of the end portion of the receiving port, a receiving port bulging portion that bulges in the radial direction is formed along the circumferential direction, and on the outer peripheral surface excluding the fitting insertion portion of the inserting port, An insertion port bulging portion that bulges in is formed along the circumferential direction,
An annular cover ring that accommodates the receiving port bulging portion and the insertion port bulging portion restrains the relative movement of the receiving port and the insertion port in the axial direction, so that the outer periphery of both the bulging portions Attached to the
A receiving flange having a bolt hole that bulges more radially than the cover ring and opens in the tube axis direction is formed along the circumferential direction on the outer peripheral surface near the opening end of the receiving port. > A pipe joint for a branching member, characterized in that 前記カバーリングの一部は、前記受口膨出部と前記受口フランジとの間に嵌合されていることを特徴とする請求項１に記載の分岐部材用の管継手。 The covering some pipe joint for branching member according to claim 1, characterized in that is fitted between the socket flange and the socket bulging portion. 前記受口膨出部及び前記挿口膨出部は略同じ外周面を有し、該外周面に前記カバーリングの内周面が当接していることを特徴とする請求項１又は２に記載の分岐部材用の管継手。 The socket bulged portion and the insertion opening swollen portion have substantially the same outer peripheral surface, according to claim 1 or 2 the inner peripheral surface of the cover ring outer peripheral surface and wherein the abutting Pipe joint for branch members. 前記カバーリングの内周面に前記挿口膨出部と前記受口膨出部の各々を挟持する二つの挟持部が形成されており、前記挿口膨出部側の挟持部の方が前記受口膨出部側の挟持部より大きい面積を有していることを特徴とする請求項３に記載の分岐部材用の管継手。 Two sandwiching portions are formed on the inner peripheral surface of the cover ring so as to sandwich each of the insertion bulge portion and the receptacle bulge portion, and the clamping portion on the insertion bulge portion side is more 4. The pipe joint for a branching member according to claim 3 , wherein the pipe joint has a larger area than the holding part on the receiving port bulging part side. 前記挿口膨出部に、前記シール部材に向けて開口した開口部が開設されていることを特徴とする請求項１ないし４のいずれかに記載の分岐部材用の管継手。 The pipe joint for a branch member according to any one of claims 1 to 4 , wherein an opening that opens toward the seal member is formed in the insertion bulge portion. 前記カバーリングは、互いの周方向の対向端部同士を接続して環状に形成される複数のカバー片から成り、該複数のカバー片は、夫々のカバー片が一方の対向端部に嵌合凸部と他方の対向端部に嵌合凹部とを有する略同一の形状に形成されており、周方向に隣り合ったカバー片の嵌合凸部と嵌合凹部とを嵌合して接続していることを特徴とする請求項１ないし５のいずれかに記載の分岐部材用の管継手。 The cover ring includes a plurality of cover pieces formed in an annular shape by connecting opposite end portions in the circumferential direction, and each of the cover pieces is fitted to one opposite end portion. Formed in approximately the same shape having a convex part and a fitting concave part at the other opposing end, and the fitting convex part and the fitting concave part of the cover pieces adjacent in the circumferential direction are fitted and connected. A pipe joint for a branching member according to any one of claims 1 to 5 , wherein the pipe joint is provided.
JP2006326149A 2006-12-01 2006-12-01 Pipe fitting for branch member Expired - Fee Related JP4889458B2 (en)

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JP4889458B2 true JP4889458B2 (en) 2012-03-07

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JP6369678B2 (en) * 2014-07-10 2018-08-08 コスモ工機株式会社 Tube unit

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