JP5507321B2 - Housing type pipe fitting - Google Patents

Housing type pipe fitting Download PDF

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JP5507321B2
JP5507321B2 JP2010097501A JP2010097501A JP5507321B2 JP 5507321 B2 JP5507321 B2 JP 5507321B2 JP 2010097501 A JP2010097501 A JP 2010097501A JP 2010097501 A JP2010097501 A JP 2010097501A JP 5507321 B2 JP5507321 B2 JP 5507321B2
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housing
flange portion
pipe
housings
tube
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JP2011226574A (en
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修市 三上
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Riken Corp
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Riken Corp
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Description

本発明は、互いに接続される管の端部同士を突き合わせて接続するハウジング形管継手に関する。   The present invention relates to a housing type pipe joint in which ends of pipes connected to each other are connected to each other.

従来から、図15に示すようなハウジング形管継手が知られている。このハウジング形管継手100は、略半円形状のハウジング本体400、ハウジング本体400の両端部から径方向外側に延びるフランジ部500を備えたハウジング300を一対組み付けてなる。そして、円周状の溝(図示せず)が管端部に形成された一対の管Pを互いに突き合わせて接続部とし、この接続部に環状ガスケット600を介して一対のハウジング300を囲むように取付け、対向するフランジ部500に開口されたボルト穴にボルト800を挿通してナット900を締め付けることにより、ハウジング形管継手100が管の接続部を囲んで固定される。
そして、図16に示すように、ハウジング本体400の周方向に沿う両側部には、径方向内側に突出する爪部400aがそれぞれ形成され、この爪部400aが一対の管Pの溝Paにそれぞれ係合することにより、管Pが接続される。
Conventionally, a housing type pipe joint as shown in FIG. 15 is known. The housing-type pipe joint 100 is formed by assembling a pair of housings 300 each having a substantially semicircular housing main body 400 and a flange portion 500 extending radially outward from both ends of the housing main body 400. Then, a pair of pipes P each having a circumferential groove (not shown) formed at the end of the pipe are brought into contact with each other to form a connection portion, and the connection portion surrounds the pair of housings 300 via an annular gasket 600. The housing-type pipe joint 100 is fixed so as to surround the connection portion of the pipe by inserting the bolt 800 through the bolt hole opened in the flange portion 500 which is attached and tightening the nut 900.
And as shown in FIG. 16, the claw part 400a which protrudes radially inside is formed in the both sides along the circumferential direction of the housing main body 400, respectively, and this claw part 400a is each in the groove | channel Pa of a pair of pipes P, respectively. By engaging, the pipe P is connected.

ところで、このようなハウジング形管継手による接続方法は、配管システムの用途や目的に応じて異なる。例えば、施工時の微調整や施工後の温度変化等による管の伸縮への対応が必要な配管システムの場合、ハウジング形管継手に管を可動に接続する方法が用いられる。
このため、爪部400aの幅を溝Paの幅より狭くし、溝Paに爪部400aを遊嵌させることで、1対の管Pの間の相対的な移動、及び管Pとハウジング本体400との間の相対的な動きが僅かに許容される。
By the way, the connection method by such a housing-type pipe joint differs according to the use and purpose of the piping system. For example, in the case of a piping system that needs to cope with pipe expansion and contraction due to fine adjustment during construction and temperature changes after construction, a method of movably connecting a pipe to a housing-type pipe joint is used.
For this reason, the claw part 400a is narrower than the width of the groove Pa, and the claw part 400a is loosely fitted in the groove Pa, so that the relative movement between the pair of pipes P and the pipe P and the housing main body 400 are performed. The relative movement between is slightly allowed.

一方、ハウジング形管継手に管Pを固定して接続し、管Pの軸方向及び周方向への動きを制限する配管システムが要求される場合がある。このような固定接続のためのハウジング形管継手として、ハウジング本体の中心軸線に対して傾斜して爪部を形成した技術が開示されている(特許文献1)。この技術は、管を囲んで1対のハウジングを対向配置した後、ハウジングを中心の周りで互いに反対方向にねじるように回転させることで、対向する爪部のうち、一方の爪部の内縁が管の環状溝の外縁に当接し、他の爪部の外縁が管の環状溝の内縁に当接し、爪部と環状溝の間のクリアランス(遊び)を無くしてガタ付きのない接続が得られる。   On the other hand, there is a case where a piping system is required in which the pipe P is fixedly connected to the housing type pipe joint and the movement of the pipe P in the axial direction and the circumferential direction is restricted. As a housing-type pipe joint for such a fixed connection, a technique is disclosed in which a claw portion is formed inclined with respect to the central axis of the housing body (Patent Document 1). In this technique, a pair of housings are arranged opposite to each other so as to surround a tube, and then the housing is rotated so as to be twisted in opposite directions around the center, so that the inner edge of one of the opposing claws is Abuts against the outer edge of the annular groove of the tube, the outer edge of the other claw portion abuts against the inner edge of the annular groove of the tube, and eliminates the clearance (play) between the claw portion and the annular groove, thereby obtaining a connection without backlash. .

さらに、図17に示すように、ハウジング400の外縁部全周に鍔部400cを設け、管Pの外周全面に鍔部400cを密着させることによって、管端部に加わる荷重を鍔部400cで受け、ゴムリング600に荷重が加わらないようにした技術が開示されている(特許文献2)。   Further, as shown in FIG. 17, a flange 400 c is provided on the entire outer periphery of the housing 400, and the flange 400 c is brought into close contact with the entire outer periphery of the pipe P, whereby the load applied to the pipe end is received by the flange 400 c. A technique is disclosed in which a load is not applied to the rubber ring 600 (Patent Document 2).

実用新案2538261号公報(図2、図5)Utility Model 2538261 (FIGS. 2 and 5) 特開2000−257767号公報(図1、図2)JP 2000-257767 A (FIGS. 1 and 2)

しかしながら、特許文献1記載の技術の場合、管の環状溝の外縁にハウジングの爪を圧接させているため、軸方向には強固に固定することができ、径方向の曲げにもある程度耐えるが、外力等による(強制的な曲げの様な)機械的な曲げには強度が充分であるとはいえない。   However, in the case of the technique described in Patent Document 1, since the claw of the housing is pressed against the outer edge of the annular groove of the tube, it can be firmly fixed in the axial direction and can withstand some bending in the radial direction. It cannot be said that the strength is sufficient for mechanical bending (such as forced bending) due to external force or the like.

また、特許文献2記載の技術の場合、通常は爪部400aの幅が管Pの溝Paより狭いため、管に内圧が作用すると、図17に示すように、接続した管同士が管軸方向(管端と管端が離れる方向)Lに移動し、完全な固定をすることが困難である。また、爪部400aに対して管Pの外周面と密着する部分が鍔部400cの1点Txのみであるのでモーメントの影響を受け易く、爪部400aが溝Paに対して動いたときに、Txを支点として管Pが曲がる恐れがある。
さらに、管Pの外径には製品ばらつきによる許容差(公差)があるため、管Pの公称値にぴったり密着するように鍔部400cの内径を設定すると、管Pの外径が公差の分だけ大きくなった場合にハウジング本体400同士の合せ面に隙間Sx(図15参照)が生じ、締め付け固定ができなくなることがある。この場合、ハウジング本体400がしっかりと管Pに固定されず、外力等により管Pが曲がったり、ゴムリング600が密着せずに気密性が低下する可能性がある。
In the case of the technique described in Patent Document 2, since the width of the claw portion 400a is usually narrower than the groove Pa of the pipe P, when internal pressure is applied to the pipe, the connected pipes are connected in the pipe axis direction as shown in FIG. It is difficult to move to L (the direction in which the tube end and the tube end are separated) L and complete fixing. In addition, since only the one point Tx of the flange portion 400c is in close contact with the outer peripheral surface of the tube P with respect to the claw portion 400a, it is easily affected by the moment, and when the claw portion 400a moves with respect to the groove Pa, There is a possibility that the pipe P bends with Tx as a fulcrum.
Furthermore, since there is a tolerance (tolerance) due to product variations in the outer diameter of the pipe P, setting the inner diameter of the collar 400c so that it closely contacts the nominal value of the pipe P will cause the outer diameter of the pipe P to be equal to the tolerance. When the size of the housing main body 400 increases, a gap Sx (see FIG. 15) may be generated on the mating surfaces of the housing main bodies 400, and tightening and fixing may not be possible. In this case, the housing main body 400 may not be firmly fixed to the pipe P, and the pipe P may be bent by an external force or the like, or the rubber ring 600 may not be in close contact with the air tightness.

本発明は上記した課題を解決し、管を軸方向に強固に固定することができるとともに、管に加わる荷重を自身で受け、管の変位を抑制したハウジング形管継手を提供することを目的とする。     An object of the present invention is to provide a housing-type pipe joint that solves the above-described problems and that can firmly fix the pipe in the axial direction and that receives the load applied to the pipe by itself and suppresses the displacement of the pipe. To do.

本発明のハウジング形管継手は、凹状又は凸状の取付け部を端部に有する1対の管を、シール部材を介して接続するハウジング形管継手において、円環の一部となる円弧状をなすハウジング本体と、前記ハウジング本体の両端部にそれぞれ設けられる固定部と、前記ハウジング本体の内面に互いに平行して設けられて前記管の前記取付け部に係合する2つの係合部と、前記ハウジング本体の内面において、個々の前記係合部の内側及び外側にそれぞれ設けられて前記管の外面に接する内鍔部及び外鍔部とを備えたハウジングを複数個有し、前記外鍔部及び前記内鍔部は、前記ハウジング本体の周方向に沿う一部に形成され、かつ前記外鍔部と前記内鍔部とは、前記係合部の延びる方向を対称軸としたとき、互いに重ならない位置に形成され、前記複数のハウジングを前記管の径方向に沿って一列に並べ、管の外側を円環状に囲むよう配置し、前記ハウジングと前記管との間に前記シール部材を介して前記管を挟み、隣接するハウジングの前記固定部同士を固定することにより前記管を固定可能である。
このように、各管は管軸方向の内鍔部と外鍔部でハウジングに支持されるので、管がそれぞれハウジングでしっかりと支持され、管軸方向に垂直な方向の曲げに対してモーメントの影響を受け難く、管が曲がり難くなる。
又、外鍔部及び/又は内鍔部は、ハウジング本体の周方向に沿う一部に形成されているので、外鍔部(内鍔部)が形成されない部分で管とハウジング本体との間に隙間が生じ、この隙間に管の材料の一部が逃げることができる。従って、管の外径が外鍔部及び/又は内鍔部の内径より大きい場合であっても、各ハウジングで管をしっかりと挟み込むと、管が隙間に向かって拡がるように変形するので、各ハウジングで管を挟み込んで組み付けることができる。
つまり、通常、管の製品の外径寸法は、公称値±公差の範囲でばらつくため、内鍔部や外鍔部の内径を、管の外径の最小値(公称値−公差)に合わせた場合に、管の外径が内鍔部や外鍔部より大きくなっても組み付けが可能となる。
又、外鍔部と内鍔部とは、係合部の延びる方向を対称軸としたとき、互いに重ならない位置に形成されるので、係合部を挟んで内鍔部と外鍔部が全く形成されない領域が生じず(又はこの領域が少なくなり)、管を内鍔部と外鍔部とで支持する円周上の領域が増え、管軸方向に垂直な方向の曲げに対してモーメントの影響を減らして管が曲がり難くなる。
The housing type pipe joint of the present invention is a housing type pipe joint in which a pair of pipes having a concave or convex attachment portion at an end thereof are connected via a seal member. A housing main body, fixing portions provided at both ends of the housing main body, two engaging portions provided parallel to each other on the inner surface of the housing main body and engaged with the mounting portion of the pipe, the inner surface of the housing body has a plurality of housing having an inner flange portion and an outer flange portion provided on each of the inner and outer individual of the engaging portion in contact with the outer surface of the tube, the outer collar portion and The inner flange portion is formed in a part along the circumferential direction of the housing body, and the outer flange portion and the inner flange portion do not overlap each other when the extending direction of the engagement portion is taken as a symmetry axis. It is formed at a position, A plurality of housings are arranged in a line along the radial direction of the tube, arranged so as to surround the outside of the tube in an annular shape, and the tube is sandwiched between the housing and the tube via the seal member, adjacent to each other. The tube can be fixed by fixing the fixing portions of the housing to be fixed.
In this way, each tube is supported by the housing at the inner flange portion and the outer flange portion in the tube axis direction, so that each tube is firmly supported by the housing and has a moment against bending in a direction perpendicular to the tube axis direction. It is hard to be affected and the tube is difficult to bend.
Further, since the outer flange portion and / or the inner flange portion is formed at a part along the circumferential direction of the housing body, the outer flange portion (inner flange portion) is not formed between the pipe and the housing body. A gap is created, and a portion of the tube material can escape into the gap. Therefore, even when the outer diameter of the tube is larger than the inner diameter of the outer flange portion and / or the inner flange portion, when the tube is firmly sandwiched between the housings, the tube deforms so as to expand toward the gap. The tube can be sandwiched and assembled with the housing.
In other words, since the outer diameter of pipe products usually varies within the range of the nominal value ± tolerance, the inner diameter of the inner flange and outer flange is adjusted to the minimum value of the outer diameter of the pipe (nominal value-tolerance). In this case, the tube can be assembled even if the outer diameter of the tube is larger than that of the inner flange portion or the outer flange portion.
In addition, the outer flange portion and the inner flange portion are formed at positions where they do not overlap each other when the extending direction of the engagement portion is taken as the axis of symmetry. No area is formed (or this area is reduced), the area on the circumference that supports the pipe with the inner and outer flanges increases, and the moment is reduced when bending in the direction perpendicular to the pipe axis direction. Reduces the effect and makes it difficult for the tube to bend.

前記外鍔部及び/又は前記内鍔部は、前記ハウジング本体の周方向において前記ハウジング本体の全周の1/4〜1/2の長さにわたって形成されていてもよい。
このようにすると、上記した管の支持効果により、管軸方向に垂直な方向の曲げに対してモーメントの影響を低減し、かつ、管とハウジング本体との間の隙間を確保し、管の外径が外鍔部(内鍔部)の内径より大きくても、各ハウジングで管を挟み込むことができる。
The outer collar part and / or the inner collar part may be formed over a length of ¼ to ½ of the entire circumference of the housing body in the circumferential direction of the housing body.
In this case, due to the above-mentioned tube support effect, the influence of the moment on the bending in the direction perpendicular to the tube axis direction is reduced, and a gap between the tube and the housing body is secured, so that the outside of the tube Even if the diameter is larger than the inner diameter of the outer flange portion (inner flange portion), the pipes can be sandwiched between the housings.

前記外鍔部及び/又は前記内鍔部は、前記ハウジング本体の周方向において1箇所又は複数箇所形成されていてもよい。   The outer collar part and / or the inner collar part may be formed at one place or a plurality of places in the circumferential direction of the housing body.

前記隣接するハウジングの前記固定部同士は、当該隣接するハウジングの長手方向の軸が交差する位置で固定可能になっている
このようにすると、隣接するハウジングの軸が交差するように固定することで、管の取付け部にそれぞれ異なるハウジングの係合部が係合した際、係合部の管軸方向の間隔が広がり、管に係合部がしっかりと固定される。
The fixing portions of the adjacent housings can be fixed at positions where the longitudinal axes of the adjacent housings intersect. In this way, by fixing the adjacent housing axes so that they intersect. When the engaging portions of different housings are engaged with the attachment portions of the tubes, the intervals between the engaging portions in the tube axis direction are widened, and the engaging portions are firmly fixed to the tube.

本発明によれば、管を軸方向に強固に固定することができるとともに、管に加わる荷重を自身で受け、管の変位を抑制したハウジング形管継手が得られる。   ADVANTAGE OF THE INVENTION According to this invention, while being able to fix a pipe | tube firmly to an axial direction, the load applied to a pipe | tube is received by itself and the housing type pipe joint which suppressed the displacement of the pipe | tube is obtained.

本発明の第1の実施形態に係るハウジング形管継手を構成する1対のハウジング本体を、対向させて配置したときの斜視図である。It is a perspective view when a pair of housing main bodies which constitute a housing type pipe joint concerning a 1st embodiment of the present invention are arranged facing. 図1の1対のハウジングを、1対の管に組み付ける方法を示す概略図である。It is the schematic which shows the method of assembling | attaching a pair of housing of FIG. 1 to a pair of pipe | tube. 一方の管の端部溝へ、1対のハウジングの相対する一方の爪部を係合した状態を示す概略図である。It is the schematic which shows the state which engaged one claw part of a pair of housing with the edge part groove | channel of one pipe | tube. 図1のハウジングを内面側から見た概略図である。It is the schematic which looked at the housing of FIG. 1 from the inner surface side. 図2のD−D面で切断した断面の概略図である。It is the schematic of the cross section cut | disconnected by the DD plane of FIG. 図2のA−A面で切断した断面の概略図である。It is the schematic of the cross section cut | disconnected by the AA surface of FIG. 図2のB−B面で切断した断面の概略図である。It is the schematic of the cross section cut | disconnected by the BB surface of FIG. 管が隙間に向かって拡がるように変形する態様を示す断面の概略図である。It is the schematic of the cross section which shows the aspect which deform | transforms so that a pipe may expand toward a clearance gap. 図2のE方向(管軸方向に平行な方向)から見たときの各ハウジングの外観図である。FIG. 3 is an external view of each housing when viewed from an E direction in FIG. 2 (a direction parallel to the tube axis direction). 本発明の第2の実施形態に係るハウジング形管継手を構成する1対のハウジングを、対向させて配置したときの斜視図である。It is a perspective view when a pair of housing which comprises the housing type pipe joint which concerns on the 2nd Embodiment of this invention is arrange | positioned facing. 本発明の第3の実施形態に係るハウジング形管継手を構成する1対のハウジングを対向させて配置したときの斜視図である。It is a perspective view when a pair of housing which comprises the housing type pipe joint which concerns on the 3rd Embodiment of this invention is arrange | positioned facing each other. 本発明の第4の実施形態に係るハウジング形管継手を管に取付けたとき、管軸方向に垂直な面で切断した断面の概略図である。It is the schematic of the cross section cut | disconnected by the surface perpendicular | vertical to a pipe-axis direction, when the housing type pipe joint which concerns on the 4th Embodiment of this invention is attached to a pipe | tube. 図12のハウジング形管継手を管に取付けたときの、上から見た概略図である。It is the schematic seen from the top when the housing type pipe joint of FIG. 12 is attached to a pipe | tube. 本発明の第5の実施形態に係るハウジング形管継手の概略を示した部分断面図である。It is the fragmentary sectional view which showed the outline of the housing type pipe joint which concerns on the 5th Embodiment of this invention. 従来のハウジング形管継手を管軸方向に垂直な面で切断した断面の概略図である。It is the schematic of the cross section which cut | disconnected the conventional housing type pipe joint by the surface perpendicular | vertical to the pipe-axis direction. 従来のハウジング形管継手を管軸方向に平行な面で切断した断面の概略図である。It is the schematic of the cross section which cut | disconnected the conventional housing type pipe joint by the surface parallel to a pipe-axis direction. 従来のハウジング形管継手を管軸方向に平行な面で切断した別の断面の概略図である。It is the schematic of another cross section which cut | disconnected the conventional housing type pipe joint by the surface parallel to a pipe-axis direction.

以下、本発明を詳細に説明するが、それにより本発明が限定されるものではない。
まず、図1〜図9を参照し、本発明の第1の実施形態に係るハウジング形管継手1について説明する。
Hereinafter, the present invention will be described in detail, but the present invention is not limited thereby.
First, with reference to FIGS. 1-9, the housing type pipe joint 1 which concerns on the 1st Embodiment of this invention is demonstrated.

図1は、ハウジング形管継手1を構成する1対のハウジング3を対向させて配置したときの斜視図である。なお、ハウジング3の内面を示すため管を図示していないが、管は管軸方向Lに沿って延び、1対のハウジング3の間に挟持されている。
それぞれのハウジング3は、半円状をなすハウジング本体4と、ハウジング本体4の両端部にそれぞれ設けられて径方向外側に延びるフランジ部5と、ハウジング本体4の内面に互いに平行して設けられる1対の係合部(爪部)4aとを備えている。
爪部4aは、ハウジング本体4の円周方向に沿う両側部に設けられ、ハウジング本体4の径方向内側に突出している。そして、この爪部4aが一対の管(図示せず)の端部の周方向に沿ってそれぞれ形成された溝(凹状の取付け部)に係合することにより、管が接続される。又、フランジ部5には、締結ボルト(図示せず)を通すための長円状の挿通孔5hが開口している。そして、フランジ部5同士を対向して挿通孔5hに締結ボルトを挿通し、ナット(図示せず)を締め付けることにより、ハウジング形管継手1が管の接続部を囲んで固定される。なお、締結ボルトとナットとが「締結具」を構成する。
一方、1対の爪部4aの間で、ハウジング本体4は外側へ向かって凹む凹部4bを形成し、凹部4bには、管とハウジング本体4との間をシールするシール部材(図示せず)が収容可能になっている。なお、一対の管は、ほぼ同軸になるよう取り付けられるが、接続した管の軸同士が多少偏心したり角度が生じた状態で接続されることもある。
FIG. 1 is a perspective view when a pair of housings 3 constituting the housing-type pipe joint 1 are arranged to face each other. Although a tube is not shown to show the inner surface of the housing 3, the tube extends along the tube axis direction L and is sandwiched between a pair of housings 3.
Each housing 3 includes a semi-circular housing main body 4, flange portions 5 provided at both ends of the housing main body 4 and extending radially outward, and parallel to the inner surface of the housing main body 4. And a pair of engaging portions (claw portions) 4a.
The claw portions 4 a are provided on both side portions along the circumferential direction of the housing body 4, and project inward in the radial direction of the housing body 4. And this pipe | tube is connected because this nail | claw part 4a engages with the groove | channel (concave attachment part) each formed along the circumferential direction of the edge part of a pair of pipe | tube (not shown). The flange portion 5 has an oval insertion hole 5h for passing a fastening bolt (not shown). Then, the housing-type pipe joint 1 is fixed so as to surround the pipe connection portion by inserting a fastening bolt into the insertion hole 5h with the flange portions 5 facing each other and tightening a nut (not shown). The fastening bolt and the nut constitute a “fastener”.
On the other hand, between the pair of claw portions 4a, the housing body 4 forms a recess 4b that is recessed outward, and the recess 4b has a seal member (not shown) that seals between the tube and the housing body 4. Can be accommodated. In addition, although a pair of pipe | tube is attached so that it may become substantially coaxial, the axis | shafts of the connected pipe | tube may be connected in the state in which the axis | shafts decentered somewhat and the angle produced.

さらに、ハウジング本体4の内面において、各爪部4aの内側及び外側に、管の外面に接する内鍔部10a及び外鍔部10bがそれぞれ設けられている。ここで、爪部4aの内側とは1対の爪部4aで囲まれる部分であり、爪部4aの外側とは、ハウジング本体4の周方向に沿う外縁側である。
外鍔部10bは、ハウジング本体4の周方向に垂直な方向(管軸方向L)に突出しつつ、ハウジング本体4の周方向に沿う一部(ハウジング本体4の全周の1/2の長さ)に形成されている。
又、内鍔部10aは、各爪部4aからハウジング本体4の管軸方向L内側に向かって延び、さらにハウジング本体4の周方向に沿う一部(ハウジング本体4の全周の1/2の長さ)に形成されている。
さらに、外鍔部10bと内鍔部10aは、各爪部4aの延びる方向を対称軸としたとき、互いに重ならない位置(例えばの爪部を挟んで斜向かいの位置)に形成されている。例えば、図1の下側のハウジングの手前側の爪部4aを見たとき、外鍔部10bはハウジング本体4の周方向の左半分に形成され、内鍔部10aはハウジング本体4の周方向の右半分に形成されている。なお、本発明においては、各爪部4aを挟んで外鍔部10bと内鍔部10aの両方が形成されていることが必要である。
Furthermore, on the inner surface of the housing main body 4, an inner flange portion 10a and an outer flange portion 10b that are in contact with the outer surface of the pipe are provided on the inner side and the outer side of each claw portion 4a, respectively. Here, the inside of the claw portion 4 a is a portion surrounded by the pair of claw portions 4 a, and the outside of the claw portion 4 a is an outer edge side along the circumferential direction of the housing body 4.
The outer flange portion 10b protrudes in a direction perpendicular to the circumferential direction of the housing main body 4 (tube axis direction L), and a part along the circumferential direction of the housing main body 4 (1/2 length of the entire circumference of the housing main body 4). ).
Further, the inner flange portion 10a extends from each claw portion 4a toward the inner side in the tube axis direction L of the housing body 4, and further a part along the circumferential direction of the housing body 4 (1/2 of the entire circumference of the housing body 4). Length).
Further, the outer flange portion 10b and the inner flange portion 10a are formed at positions where they do not overlap each other (for example, diagonally across the nail portion) when the extending direction of each claw portion 4a is taken as the axis of symmetry. For example, when the claw portion 4a on the front side of the lower housing of FIG. 1 is viewed, the outer flange portion 10b is formed in the left half of the housing body 4 in the circumferential direction, and the inner flange portion 10a is in the circumferential direction of the housing body 4 It is formed in the right half of. In the present invention, it is necessary that both the outer flange portion 10b and the inner flange portion 10a are formed with the claws 4a interposed therebetween.

各ハウジング3において、一方のフランジ部5の内面に管軸方向Lに延びる凸部5aを形成しつつ、他方のフランジ部5の内面に凹部5bを形成し、各ハウジング3の対向する凸部5aと凹部5bとを組み合わせ、締結具を締め付けたときに各ハウジング3を互いに逆方向に回転させ固定してよい。   In each housing 3, a convex portion 5 a extending in the tube axis direction L is formed on the inner surface of one flange portion 5, while a concave portion 5 b is formed on the inner surface of the other flange portion 5. And the recess 5b may be combined and the housings 3 may be rotated and fixed in opposite directions when the fastener is tightened.

図2は、図1の1対のハウジング3を、1対の管P、Pに組み付ける方法を示す概略図である。一対の管P、Pを互いに突き合わせた接続部にシール部材(環状ガスケット、図示せず)を被せ、シール部材を囲むように一対のハウジング3を対向配置する。そして、対向するフランジ部5の挿通孔5hに締結ボルト8を挿通してナット(図示せず)を締め付けることにより、ハウジング形管継手1が管P、Pの接続部を挟んで固定される。
ここで、挿通孔5hはL方向に長い長円状とし挿通孔5hと締結ボルト8の間にL方向に遊びを設け、締結ボルト8で各フランジ部5を緩く締め付け、各ハウジング3を互いに中心付近を対称にねじるように回転させるようにしてもよい。また、挿通孔5hをハウジング3の中心からL方向に偏心した位置に形成し、対向するハウジング3を締結具により締め付けたときに、各ハウジング3を互いに逆方向に回転させるようにしてもよい。
このようにして、各ハウジング3のフランジ部5同士は、各ハウジング3の長手方向の軸(L方向に垂直な軸)が交差する位置で固定することができる。これにより、以下の図3に述べるように、爪部4a同士のL方向の間隔が広がった状態で固定可能になっている。
FIG. 2 is a schematic view showing a method of assembling the pair of housings 3 in FIG. 1 to the pair of pipes P 1 and P 2 . A seal member (annular gasket, not shown) is placed on the connection portion where the pair of pipes P 1 and P 2 are abutted with each other, and the pair of housings 3 are disposed so as to surround the seal member. Then, by inserting the fastening bolt 8 into the insertion hole 5h of the opposing flange portion 5 and tightening the nut (not shown), the housing-type pipe joint 1 is fixed with the connection portions of the pipes P 1 and P 2 interposed therebetween. The
Here, the insertion hole 5h is in the shape of an ellipse that is long in the L direction, play is provided in the L direction between the insertion hole 5h and the fastening bolt 8, each flange portion 5 is loosely tightened with the fastening bolt 8, and each housing 3 is centered on each other. You may make it rotate so that the vicinity may be twisted symmetrically. Alternatively, the insertion hole 5h may be formed at a position eccentric from the center of the housing 3 in the L direction, and the housings 3 may be rotated in opposite directions when the opposing housings 3 are tightened with fasteners.
In this way, the flange portions 5 of the housings 3 can be fixed at a position where the longitudinal axis (axis perpendicular to the L direction) of the housings 3 intersects. As a result, as described in FIG. 3 below, the claw portions 4a can be fixed in a state in which the interval in the L direction is widened.

図3は、一方の管Pの端部の溝Paへ、1対のハウジングの相対した一方の爪部4aを係合した状態を示す。1対のハウジング3で管Pを挟み込むと、各ハウジング3にそれぞれ形成された爪部4aが管Pの溝Paに上下から係合する。そして、この状態で締結具を締め付けて、各ハウジング3を互いに逆方向に回転させて管軸方向Lに向かって互いにずらす(図2参照)と、上下の爪部4a同士のL方向の間隔が広がる。図3の例では、上側のハウジング3に形成された爪部4(図3の実線)が左回転し、溝Paの側壁に当接する。一方、下側のハウジング3に形成された爪部4(図3の点線)が右回転し、溝Paの側壁に当接する。
このようにして、締結具を締め付けることにより、爪部4a同士のL方向の間隔が広がり、各爪部4aが溝Paにクリアランス(遊び)無く係合するので、各ハウジング3に管Pがしっかりと固定されるとともに各ハウジング3が固定される。管Pについても、同様である。
FIG. 3 shows a state in which one opposing claw portion 4a of the pair of housings is engaged with the groove Pa at the end of one tube P. When sandwich the pipe P 1 by a pair of housing 3, the claw portion 4a formed respectively on each housing 3 engage from above and below the groove Pa of the pipe P 1. When the fasteners are tightened in this state and the respective housings 3 are rotated in opposite directions to be displaced from each other in the tube axis direction L (see FIG. 2), the distance between the upper and lower claw portions 4a in the L direction is increased. spread. In the example of FIG. 3, the claw portion 4 (solid line in FIG. 3) formed in the upper housing 3 rotates counterclockwise and comes into contact with the side wall of the groove Pa. On the other hand, the claw portion 4 (dotted line in FIG. 3) formed in the lower housing 3 rotates clockwise and comes into contact with the side wall of the groove Pa.
By tightening the fasteners in this way, the distance between the claw portions 4a in the L direction is widened, and each claw portion 4a is engaged with the groove Pa without clearance (play). And the housings 3 are fixed. For even the pipe P 2, it is the same.

次に、図4、図5を参照し、外鍔部10bと内鍔部10aの作用について説明する。
図4は、図1のハウジング3を内面側から見た概略図である。外鍔部10bと内鍔部10aは、ハウジング本体4の周方向に沿い、ハウジング本体4の全周の1/2の長さにわたって形成されている。又、外鍔部10bと内鍔部10aは、各爪部4aの延びる方向を対称軸としたとき、互いに重ならない位置に形成されている。
Next, with reference to FIG. 4, FIG. 5, the effect | action of the outer collar part 10b and the inner collar part 10a is demonstrated.
FIG. 4 is a schematic view of the housing 3 of FIG. 1 as viewed from the inner surface side. The outer flange portion 10 b and the inner flange portion 10 a are formed along the circumferential direction of the housing body 4 over a length that is ½ of the entire circumference of the housing body 4. Further, the outer flange portion 10b and the inner flange portion 10a are formed at positions that do not overlap each other when the extending direction of each claw portion 4a is taken as the axis of symmetry.

図5は、図2のD線(図1も参照)に沿う断面図である。ここで、内鍔部10aと管P,Pとの接触面をTとし、外鍔部10bと管P,Pとの接触面をTとする。管P,Pの上側及び下側では、個々の爪部4aを挟んで外鍔部10bと内鍔部10aのいずれか一方しか形成されていない。しかしながら、管P,Pのそれぞれの上下を全体で見ると、各管P,PはL方向の異なる2箇所T、Tでハウジング3の内鍔部10aと外鍔部10bで支持されている。例えば、管Pは、自身の上側で内鍔部10aとTで接し、自身の下側で外鍔部10bとTで接している。
従って、管P,Pはそれぞれハウジング3でしっかりと支持され、L方向に垂直なM方向の曲げに対してモーメントの影響を受け難く、管P,Pが曲がり難くなる。
なお、各管P,PとそれぞれTで接するよう、内鍔部10aはハウジング本体4の周方向に沿う中心軸線C(図4参照)を挟んで両側(各爪部4a側)にそれぞれ配置される必要がある。
5 is a cross-sectional view taken along line D (see also FIG. 1) in FIG. Here, the contact surface between the inner flange portion 10a and the pipes P 1 and P 2 is T 1 , and the contact surface between the outer flange portion 10b and the tubes P 1 and P 2 is T 2 . On the upper and lower sides of the pipes P 1 and P 2 , only one of the outer flange portion 10 b and the inner flange portion 10 a is formed with the individual claw portions 4 a interposed therebetween. However, the pipe P 1, when viewed across the respective upper and lower P 2, each tube P 1, P 2 is an inner flange portion 10a and the outer flange portion 10b of the housing 3 at two different points T 1, T 2 of the L direction It is supported by. For example, the pipe P 1 is in contact with the inner flange portion 10a and the T 1 in the upper itself, in contact with the underside of its outside flange portion 10b and T 2.
Therefore, the pipes P 1 and P 2 are firmly supported by the housing 3, respectively, are not easily influenced by the moment with respect to the bending in the M direction perpendicular to the L direction, and the pipes P 1 and P 2 are difficult to bend.
The inner flange portion 10a is disposed on both sides (each claw portion 4a side) with the central axis C (see FIG. 4) along the circumferential direction of the housing main body 4 sandwiched between the pipes P 1 and P 2 at T 1 . Each needs to be placed.

次に、図6〜図9を参照し、ハウジング本体4の周方向に沿う一部に、外鍔部10bと内鍔部10aとを形成する理由について説明する。
図6は、図2のA−A面で切断した断面の概略図である。A−A切断面の矢印方向からの概略図では、ハウジング本体4の凹部4bに収容されたシール部材(環状ガスケット)6が管Pの突き合わせ接続部の外面に接し、接続部をシールしている。
Next, the reason why the outer flange portion 10b and the inner flange portion 10a are formed in a part along the circumferential direction of the housing body 4 will be described with reference to FIGS.
6 is a schematic view of a cross section taken along the plane AA of FIG. In the schematic view of the AA cut surface from the direction of the arrow, the seal member (annular gasket) 6 accommodated in the recess 4b of the housing body 4 is in contact with the outer surface of the butt connection portion of the pipe P and seals the connection portion. .

一方、図7は、図2のB−B面で切断した断面の概略図である。内鍔部10aは、管Pの上側で一方のハウジング本体4の周方向に沿う左半分に形成され、管Pの下側で他のハウジング本体4の周方向に沿う右半分に形成されている。   On the other hand, FIG. 7 is a schematic view of a cross section taken along the plane BB of FIG. The inner flange 10a is formed on the left half along the circumferential direction of one housing body 4 above the pipe P, and is formed on the right half along the circumferential direction of the other housing body 4 below the pipe P. .

通常、管Pの製品の外径寸法は、公称値±公差の範囲でばらつくため、内鍔部10aや外鍔部10bの内径を管Pの公称値に等しく設定しても、管Pの外径が最も小さくなる場合(公称値−公差)には、内鍔部10aや外鍔部10bが管Pの外面にぴったりと接しなくなる。一方、内鍔部10aや外鍔部10bの内径を、管Pの外径の最小値(公称値−公差)に合わせると、管Pの外径がこれより大きくなった場合に、各ハウジング3で管Pを挟み込んで取付けることができなくなる。   Normally, the outer diameter of the product of the pipe P varies within the range of the nominal value ± tolerance. Therefore, even if the inner diameter of the inner flange 10a and the outer flange 10b is set equal to the nominal value of the pipe P, the outer diameter of the pipe P When the diameter is the smallest (nominal value-tolerance), the inner flange portion 10a and the outer flange portion 10b do not contact the outer surface of the pipe P exactly. On the other hand, when the inner diameters of the inner flange portion 10a and the outer flange portion 10b are adjusted to the minimum value (nominal value-tolerance) of the outer diameter of the pipe P, each housing 3 is changed when the outer diameter of the pipe P becomes larger than this. Therefore, the pipe P cannot be sandwiched and attached.

そこで、ハウジング本体4の周方向に沿う一部にのみ内鍔部10aを形成すると、管Pの外径が内鍔部10aの内径より大きい場合であっても、内鍔部10aが形成されない部分で管Pとハウジング本体4との間に隙間Sが生じ、この隙間Sに管Pの材料の一部が逃げることができる。
従って、図8に示すように、各ハウジング3で管Pをしっかりと挟み込むと、管Pが隙間Sに向かって拡がるように変形するので、管Pの外径が内鍔部10aの内径より大きい場合であっても、各ハウジング3で管Pを挟み込むことができる。
Therefore, when the inner flange portion 10a is formed only in a part along the circumferential direction of the housing body 4, even if the outer diameter of the pipe P is larger than the inner diameter of the inner flange portion 10a, the inner flange portion 10a is not formed. in the gap S 1 is formed between the pipe P and the housing body 4 can be in the gap S 1 is a part of the material of the pipe P escape.
Accordingly, as shown in FIG. 8, when firmly sandwich the pipe P in the housing 3, since the pipe P is deformed so as to extend toward the gap S 1, than the inner diameter of the inner flange portion 10a is the outer diameter of the pipe P Even if it is large, the pipes P can be sandwiched between the housings 3.

又、図9は、図2のE方向(管軸方向Lに平行な方向)から見たときの各ハウジング3の外観図である。外鍔部10bは、管Pの上側でハウジング本体4の周方向に沿う右半分に形成され、管Pの下側でハウジング本体4の周方向に沿う左半分に形成されている。
このように、ハウジング本体4の周方向に沿う一部に外鍔部10bを形成すると、管Pの外径が外鍔部10bの内径より大きい場合であっても、外鍔部10bが形成されない部分に管Pの材料の一部が逃げることができる。従って、図8の場合と同様に、管Pの外径が外鍔部10bの内径より大きい場合であっても、各ハウジング3で管Pを挟み込むことができる。
FIG. 9 is an external view of each housing 3 when viewed from the E direction in FIG. 2 (a direction parallel to the tube axis direction L). The outer flange portion 10 b is formed on the right half along the circumferential direction of the housing body 4 above the pipe P, and is formed on the left half along the circumferential direction of the housing body 4 below the pipe P.
Thus, when the outer flange portion 10b is formed in a part along the circumferential direction of the housing body 4, the outer flange portion 10b is not formed even when the outer diameter of the pipe P is larger than the inner diameter of the outer flange portion 10b. Part of the material of the tube P can escape to the part. Therefore, similarly to the case of FIG. 8, even when the outer diameter of the pipe P is larger than the inner diameter of the outer flange portion 10b, the pipe P can be sandwiched between the housings 3.

外鍔部10b及び/又は内鍔部10aは、ハウジング本体4の周方向においてハウジング本体の全周の1/4〜1/2の長さにわたって形成されているとよい。
外鍔部10b及び/又は内鍔部10aが、ハウジング本体4の周方向においてハウジング本体の全周の1/4未満の長さ形成されている場合、上記した管の支持効果が低減し、M方向の曲げに対してモーメントの影響を受けやすくなる場合がある。一方、外鍔部10b及び/又は内鍔部10aが、ハウジング本体4の周方向においてハウジング本体の全周の1/2を超える長さ形成されている場合、上記した管Pとハウジング本体4との間の隙間が減少し、管Pの外径が外鍔部10b(内鍔部10a)の内径より大きい場合に各ハウジング3で管Pを挟み込むことが困難になることがある。
The outer flange portion 10 b and / or the inner flange portion 10 a may be formed over a length of ¼ to ½ of the entire circumference of the housing body in the circumferential direction of the housing body 4.
When the outer flange portion 10b and / or the inner flange portion 10a is formed with a length less than ¼ of the entire circumference of the housing body in the circumferential direction of the housing body 4, the above-described tube support effect is reduced, and M May be susceptible to moments for directional bending. On the other hand, when the outer flange portion 10b and / or the inner flange portion 10a is formed to have a length exceeding 1/2 of the entire circumference of the housing body in the circumferential direction of the housing body 4, the pipe P and the housing body 4 described above When the outer diameter of the pipe P is larger than the inner diameter of the outer flange part 10b (inner flange part 10a), it may be difficult to sandwich the pipe P between the housings 3.

又、このように、内鍔部10a及び外鍔部10bをハウジング本体4の周方向に沿う一部にのみ形成する場合、内鍔部10a及び外鍔部10bを1つの爪部4aの延びる方向を対称軸としたときに互いに重ならない位置(対称でない位置、つまり爪部を挟んで斜向かいとなる位置)に形成するのが好ましい。これは、内鍔部10a及び外鍔部10bを爪部4aの延びる方向を対称軸としたときに重なる(爪部4aに対して向かい合った)位置のみとすると、爪部4aを挟んで内鍔部10aと外鍔部10bが全く形成されない領域が生じ、この領域では管Pが内鍔部10aや外鍔部10bで支持されず、M方向の曲げに対してモーメントの影響を受けて曲がり易くなるからである。   Further, when the inner flange portion 10a and the outer flange portion 10b are formed only in a part along the circumferential direction of the housing body 4, the inner flange portion 10a and the outer flange portion 10b are extended in the direction in which the one claw portion 4a extends. Preferably, they are formed at positions that do not overlap with each other (where they are not symmetrical, that is, diagonally across the nail portion). If the inner flange portion 10a and the outer flange portion 10b are only positioned so as to overlap when the extending direction of the claw portion 4a is taken as the axis of symmetry (facing the claw portion 4a), the inner flange portion There is a region where the portion 10a and the outer flange portion 10b are not formed at all. In this region, the pipe P is not supported by the inner flange portion 10a or the outer flange portion 10b, and is easily bent due to the influence of the moment on the bending in the M direction. Because it becomes.

次に、図10を参照し、本発明の第2の実施形態に係るハウジング形管継手11について説明する。図10は、第2の実施形態に係るハウジング形管継手11を構成する1対のハウジング3を対向させて配置したときの斜視図であり、図1に対応した図である。
第2の実施形態に係るハウジング形管継手11は、外鍔部10bと内鍔部10aの形成位置が異なること以外は、第1の実施形態に係るハウジング形管継手と同一であるので、同一部分については説明を省略する。
Next, a housing type pipe joint 11 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 10 is a perspective view when a pair of housings 3 constituting the housing-type pipe joint 11 according to the second embodiment are arranged to face each other, and corresponds to FIG.
The housing-type pipe joint 11 according to the second embodiment is the same as the housing-type pipe joint 11 according to the first embodiment except that the formation positions of the outer collar part 10b and the inner collar part 10a are different. Description of the portion is omitted.

図10において、ハウジング本体4内面の各爪部4aの内側及び外側に、管の外面に接する内鍔部10a及び外鍔部10bがそれぞれ設けられている。又、内鍔部10a及び外鍔部10bは、ハウジング本体4の周方向の全周に形成されている。
第2の実施形態においても、管はL方向の異なる2箇所T、Tでハウジング3の内鍔部10aと外鍔部10bで支持される。従って、管はそれぞれハウジング3でしっかりと支持され、L方向に垂直なM方向の曲げに対してモーメントの影響を受け難く、管が曲がり難くなる。
特に、内鍔部10a及び外鍔部10bが、ハウジング本体4の周方向の全周に形成されているため、管の支持がより強固になる。
In FIG. 10, an inner flange portion 10a and an outer flange portion 10b that are in contact with the outer surface of the pipe are respectively provided on the inner side and the outer side of each claw portion 4a on the inner surface of the housing body 4. Further, the inner flange portion 10 a and the outer flange portion 10 b are formed on the entire circumference of the housing body 4 in the circumferential direction.
In the second embodiment, the tube is supported by the inner flange portion 10a and the outer flange portion 10b of the housing 3 at two different points T 1, T 2 of the L direction. Accordingly, the pipes are firmly supported by the housing 3 and are not easily affected by the moment with respect to the bending in the M direction perpendicular to the L direction, and the pipes are difficult to bend.
In particular, since the inner flange portion 10a and the outer flange portion 10b are formed on the entire circumference in the circumferential direction of the housing body 4, the support of the tube becomes stronger.

次に、図11を参照し、本発明の第3の実施形態に係るハウジング形管継手12について説明する。図11は、第3の実施形態に係るハウジング形管継手12を構成する1対のハウジング3を対向させて配置したときの斜視図であり、図1に対応した図である。
第3の実施形態に係るハウジング形管継手12は、外鍔部10bと内鍔部10aの形成位置が異なること以外は、第1の実施形態に係るハウジング形管継手と同一であるので、同一部分については説明を省略する。
Next, a housing type pipe joint 12 according to a third embodiment of the present invention will be described with reference to FIG. FIG. 11 is a perspective view when a pair of housings 3 constituting the housing-type pipe joint 12 according to the third embodiment are arranged to face each other, and corresponds to FIG.
The housing-type pipe joint 12 according to the third embodiment is the same as the housing-type pipe joint 12 according to the first embodiment except that the formation positions of the outer collar part 10b and the inner collar part 10a are different. Description of the portion is omitted.

図11において、ハウジング本体4内面の各爪部4aの内側及び外側に、管の外面に接する内鍔部10a及び外鍔部10bがそれぞれ設けられている。又、内鍔部10aは、ハウジング本体4の周方向の全周に形成されている。一方、外鍔部10bは、ハウジング本体4の周方向の2箇所に分離して形成され、ハウジング本体4の周方向中央部には外鍔部10bが形成されていない。
第3の実施形態においても、管はL方向の異なる2箇所T、Tでハウジング3の内鍔部10aと外鍔部10bで支持される。従って、管はそれぞれハウジング3でしっかりと支持され、L方向に垂直なM方向の曲げに対してモーメントの影響を受け難く、管が曲がり難くなる。
又、外鍔部10bは、ハウジング本体4の周方向の一部に形成されているため、第1の実施形態と同様、管の外径が内鍔部10aの内径より大きい場合であっても、各ハウジング3で管を挟み込むことができる。
In FIG. 11, an inner flange portion 10 a and an outer flange portion 10 b that are in contact with the outer surface of the pipe are respectively provided on the inner side and the outer side of each claw portion 4 a on the inner surface of the housing body 4. The inner flange portion 10 a is formed on the entire circumference of the housing body 4 in the circumferential direction. On the other hand, the outer flange portion 10 b is formed separately at two locations in the circumferential direction of the housing body 4, and the outer flange portion 10 b is not formed at the circumferential central portion of the housing body 4.
Also in the third embodiment, the pipe is supported by the inner flange portion 10a and the outer flange portion 10b of the housing 3 at two places T 1 and T 2 having different L directions. Accordingly, the pipes are firmly supported by the housing 3 and are not easily affected by the moment with respect to the bending in the M direction perpendicular to the L direction, and the pipes are difficult to bend.
Further, since the outer flange portion 10b is formed at a part of the circumferential direction of the housing body 4, similarly to the first embodiment, even when the outer diameter of the tube is larger than the inner diameter of the inner flange portion 10a. The tube can be sandwiched between the housings 3.

次に、図12、図13を参照し、本発明の第4の実施形態に係るハウジング形管継手13について説明する。図12は、第4の実施形態に係るハウジング形管継手13を管に取付けたとき、管軸方向Lに垂直な面で切断した断面図である。第4の実施形態に係るハウジング形管継手13は、ハウジング本体4の両端のうち、一端にはフランジが形成されず、その代わりにヒンジ70が設けられていること以外は、第1の実施形態に係るハウジング形管継手と同一であるので、同一部分については、図1と同一の符号を付して説明を省略する。   Next, a housing type pipe joint 13 according to a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a cross-sectional view taken along a plane perpendicular to the pipe axis direction L when the housing-type pipe joint 13 according to the fourth embodiment is attached to a pipe. The housing type pipe joint 13 according to the fourth embodiment is the same as that of the first embodiment except that a flange is not formed at one end of both ends of the housing body 4 and a hinge 70 is provided instead. The same parts as those in FIG. 1 are denoted by the same reference numerals as those in FIG.

図12において、ハウジング形管継手13は、略半円形状のハウジング本体4と、ハウジング本体4の両端部のうち一端に径方向外側に延びるフランジ部5と、ハウジング本体4の他端に接続されたヒンジ70とを備えたハウジング31a、31bを一対組み付けて構成されている。ここで、ヒンジ70は、上側ハウジング31aの他端の中心軸線C上に接続された片状のヒンジベース部72と、ヒンジベース部72を挟む一対の円形の軸支持部71と、軸支持部71とヒンジベース部72とを管軸方向Lに貫通する孔に嵌挿されたボルト73と、図示しないナット74とを有する。
各軸支持部71の基端は下側ハウジング31bの他端に接続され、ボルト73を軸心としてヒンジベース部72が軸支持部71に対して相対的に回動することにより、上側ハウジング31aが下側ハウジング31bに対して開き、管Pの出し入れができるようになっている。
なお、第4の実施形態において、「締結具」は、フランジ5を固定するボルト8とナット9、及びヒンジ70から構成される。
In FIG. 12, the housing-type pipe joint 13 is connected to a substantially semicircular housing body 4, a flange portion 5 extending radially outward at one end of both ends of the housing body 4, and the other end of the housing body 4. A pair of housings 31a and 31b each having a hinge 70 are assembled. Here, the hinge 70 includes a piece-like hinge base portion 72 connected on the central axis C at the other end of the upper housing 31a, a pair of circular shaft support portions 71 sandwiching the hinge base portion 72, and a shaft support portion. 71 and a bolt 73 inserted into a hole penetrating the hinge base portion 72 in the tube axis direction L, and a nut 74 (not shown).
The base end of each shaft support portion 71 is connected to the other end of the lower housing 31b, and the hinge base portion 72 rotates relative to the shaft support portion 71 with the bolt 73 as an axis, whereby the upper housing 31a. Is opened with respect to the lower housing 31b so that the tube P can be taken in and out.
In the fourth embodiment, the “fastener” includes a bolt 8, a nut 9, and a hinge 70 that fix the flange 5.

図13は、図12の第4の実施形態に係るハウジング形管継手13を管に取付けたとき、上から見た概略図である。各軸支持部71は、ヒンジベース部72と所定の隙間Gを有しているため、第1の実施形態と同様にハウジング31a、31bを互いにねじるように回転させることができる。つまり、各ハウジングを回転させることにより、各ハウジングが互いにずれることができるよう、ヒンジベース部72と各軸支持部71との間には遊びが設けられている。なお、第4の実施形態の場合、各ハウジング31a、31bの一端はヒンジ70に接続されているため、図示しない凸部5a及び凹部5bをフランジ5の内面のみに設ければよい。又、フランジ5には第1の実施形態と同様の長円状の挿通孔が開口している。   FIG. 13 is a schematic view seen from above when the housing type pipe joint 13 according to the fourth embodiment of FIG. 12 is attached to a pipe. Since each shaft support portion 71 has a predetermined gap G with the hinge base portion 72, the housings 31a and 31b can be rotated so as to be twisted with each other as in the first embodiment. In other words, play is provided between the hinge base portion 72 and the shaft support portions 71 so that the housings can be displaced from each other by rotating the housings. In the case of the fourth embodiment, one end of each of the housings 31 a and 31 b is connected to the hinge 70, so that the not-shown convex portions 5 a and concave portions 5 b may be provided only on the inner surface of the flange 5. The flange 5 has an elliptical insertion hole similar to that of the first embodiment.

第4の実施形態によれば、各ハウジング31a、31bがヒンジ70に接続されているため、1対のハウジングを選び出す必要がなく、又、作業中にハウジングの一方が紛失したりしないので、施工性も向上する。
又、第4の実施形態においても、管はL方向の異なる2箇所T、Tでハウジング31a、31bの内鍔部10aと外鍔部10bで支持される。従って、管はそれぞれハウジング31a、31bでしっかりと支持され、L方向に垂直なM方向の曲げに対してモーメントの影響を受け難く、管が曲がり難くなる。
According to the fourth embodiment, since each housing 31a, 31b is connected to the hinge 70, there is no need to select a pair of housings, and one of the housings is not lost during the operation. Also improves.
Also in the fourth embodiment, the pipe is supported by the inner flange portion 10a and the outer flange portion 10b of the housings 31a and 31b at two places T 1 and T 2 having different L directions. Accordingly, the pipes are firmly supported by the housings 31a and 31b, respectively, and are hardly affected by the moment with respect to the bending in the M direction perpendicular to the L direction, and the pipes are difficult to bend.

次に、図14を参照し、本発明の第5の実施形態に係るハウジング形管継手14について説明する。図14は、第5の実施形態に係るハウジング形管継手14を管軸方向Lに沿って切断したときの部分断面図である。
第5の実施形態に係るハウジング形管継手14は、管Pの取付け部が突起Pbであり、又、突起Pbに対応してハウジングの係合部が凹部42bであること以外は、第1の実施形態に係るハウジング形管継手と同一であるので、同一部分については説明を省略する。
Next, a housing type pipe joint 14 according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a partial cross-sectional view of the housing-type pipe joint 14 according to the fifth embodiment when cut along the pipe axis direction L. FIG.
The housing-type pipe joint 14 according to the fifth embodiment is the first except that the attachment portion of the pipe P is a projection Pb and the engagement portion of the housing is a recess 42b corresponding to the projection Pb. Since it is the same as that of the housing type pipe joint according to the embodiment, the description of the same part is omitted.

図14において、ハウジング本体42内面の各凹部42bの内側及び外側に、管の外面に接する内鍔部12a及び外鍔部12bがそれぞれ設けられている。又、内鍔部12a及び外鍔部12bは、ハウジング本体42の周方向の全周に形成されている。内鍔部12a及び外鍔部12bは、管Pの外面に接する。なお、凹部42bの管軸方向Lにおける幅Lwは、管の突起Pb(取付け部)の幅より広い。そして、第1の実施形態と同様にハウジング32を互いにねじるように回転させると、対向する凹部42bのL方向の間隔が広がり(図14の各凹部42bの位置を参照)、凹部42bが突起Pbと遊びを設けずにしっかりと固定することができる。   In FIG. 14, an inner flange portion 12 a and an outer flange portion 12 b that are in contact with the outer surface of the pipe are respectively provided on the inner side and the outer side of each recess 42 b on the inner surface of the housing body 42. Further, the inner flange portion 12 a and the outer flange portion 12 b are formed on the entire circumference of the housing body 42 in the circumferential direction. The inner flange portion 12a and the outer flange portion 12b are in contact with the outer surface of the pipe P. The width Lw in the tube axis direction L of the recess 42b is wider than the width of the tube protrusion Pb (attachment portion). Then, when the housings 32 are rotated so as to twist each other as in the first embodiment, the interval in the L direction between the opposing recesses 42b is expanded (see the positions of the recesses 42b in FIG. 14), and the recesses 42b are projected Pb. And can be firmly fixed without play.

第5の実施形態においても、管はL方向の異なる2箇所T、Tでハウジング32の内鍔部12aと外鍔部12bで支持される。従って、管はそれぞれハウジング32でしっかりと支持され、L方向に垂直なM方向の曲げに対してモーメントの影響を受け難く、管が曲がり難くなる。
なお、第1の実施形態と同様、内鍔部12a及び/又は外鍔部12bを、ハウジング本体4の周方向の一部に形成してもよく、この場合は第1の実施形態と同様、管の外径が内鍔部12a(外鍔部12b)の内径より大きい場合であっても、各ハウジング3で管を挟み込むことができる。
Also in the fifth embodiment, the pipe is supported by the inner flange portion 12a and the outer flange portion 12b of the housing 32 at two places T 1 and T 2 having different L directions. Therefore, the pipes are respectively firmly supported by the housing 32, are not easily affected by the moment with respect to the bending in the M direction perpendicular to the L direction, and the pipes are difficult to bend.
As in the first embodiment, the inner flange portion 12a and / or the outer flange portion 12b may be formed in a part of the circumferential direction of the housing body 4. In this case, as in the first embodiment, Even when the outer diameter of the tube is larger than the inner diameter of the inner flange portion 12a (outer flange portion 12b), the tube can be sandwiched between the housings 3.

本発明は上記した実施形態に限定されず、本発明の思想と範囲に含まれる様々な変形及び均等物に及ぶことはいうまでもない。
例えば、上記した実施形態では、1対(2個)のハウジングで管を囲んで固定したが、3個以上のハウジングで管を囲んで固定してもよい。なお、3個のハウジングで管を固定する場合は、各ハウジングのハウジング本体が約1/3円の円弧状をなし、これらを一列に並べると円環状になり、管の外側を囲むようになる。同様に、4個のハウジングで管を固定する場合は、各ハウジングのハウジング本体が約1/4円の円弧状をなすことになる。さらに、3個以上のハウジングで管を囲む場合、各ハウジングの隣接部分をヒンジで接続し、両端となるハウジングのみに固定部を設けれてもよい。
又、固定部は、上記フランジ部に限られず、各ハウジングで管を囲んだ際に隣接するハウジング同士を固定するものであればよい。
It goes without saying that the present invention is not limited to the above-described embodiments, and extends to various modifications and equivalents included in the spirit and scope of the present invention.
For example, in the above-described embodiment, the pipe is surrounded and fixed by a pair of (two) housings, but the pipe may be surrounded and fixed by three or more housings. In addition, when fixing a pipe | tube with three housings, the housing main body of each housing makes circular arc shape of about 1/3 circle | round | yen, and when these are put in a line, it will become an annular | circular shape and will enclose the outer side of a pipe | tube. . Similarly, when fixing a pipe | tube with four housings, the housing main body of each housing makes circular arc shape of about 1/4 circle. Furthermore, when enclosing a pipe | tube with three or more housings, the adjacent part of each housing may be connected by a hinge, and a fixing | fixed part may be provided only in the housing used as both ends.
Further, the fixing portion is not limited to the flange portion, and any fixing portion may be used as long as adjacent housings are fixed when the pipes are surrounded by the respective housings.

1、11〜14 ハウジング形管継手
3、31a、31b、32 ハウジング
4、42 ハウジング本体
4a、42b 係合部(爪部)
5 フランジ部(固定部)
5h 挿通孔
6 シール部材
8 締結ボルト
10a、12a 内鍔部
10b、12b 外鍔部
P 管
Pa、Pb 管の取付け部
L 管軸方向
1, 11-14 Housing type pipe joint 3, 31a, 31b, 32 Housing 4, 42 Housing body 4a, 42b Engagement part (claw part)
5 Flange (fixed part)
5h Insertion hole 6 Sealing member 8 Fastening bolt 10a, 12a Inner flange part 10b, 12b Outer flange part P pipe Pa, Pb pipe attachment part L Pipe axis direction

Claims (4)

凹状又は凸状の取付け部を端部に有する1対の管を、シール部材を介して接続するハウジング形管継手において、
円環の一部となる円弧状をなすハウジング本体と、
前記ハウジング本体の両端部にそれぞれ設けられる固定部と、
前記ハウジング本体の内面に互いに平行して設けられて前記管の前記取付け部に係合する2つの係合部と、
前記ハウジング本体の内面において、個々の前記係合部の内側及び外側にそれぞれ設けられて前記管の外面に接する内鍔部及び外鍔部と、
を備えたハウジングを複数個有し、
前記外鍔部及び前記内鍔部は、前記ハウジング本体の周方向に沿う一部に形成され、かつ前記外鍔部と前記内鍔部とは、前記係合部の延びる方向を対称軸としたとき、互いに重ならない位置に形成され、
前記複数のハウジングを前記管の径方向に沿って一列に並べ、管の外側を円環状に囲むよう配置し、前記ハウジングと前記管との間に前記シール部材を介して前記管を挟み、隣接するハウジングの前記固定部同士を固定することにより前記管を固定可能なハウジング形管継手。
In a housing-type pipe joint for connecting a pair of pipes having a concave or convex attachment portion at an end thereof via a seal member,
An arcuate housing body that is part of an annulus,
Fixing portions respectively provided at both ends of the housing body;
Two engaging portions that are provided in parallel to each other on the inner surface of the housing body and engage with the mounting portion of the tube;
On the inner surface of the housing body, an inner flange portion and an outer flange portion that are provided on the inner side and the outer side of each of the engagement portions, respectively, and are in contact with the outer surface of the pipe,
A plurality of housings with
The outer flange portion and the inner flange portion are formed in a part along the circumferential direction of the housing main body, and the outer flange portion and the inner flange portion have a symmetry axis in a direction in which the engagement portion extends. When formed in positions that do not overlap each other,
The plurality of housings are arranged in a line along the radial direction of the pipes, are arranged so as to surround the outside of the pipes in an annular shape, and the pipes are sandwiched between the housings and the pipes with the seal member interposed therebetween. A housing type pipe joint capable of fixing the pipe by fixing the fixing portions of the housing to be fixed.
前記外鍔部及び前記内鍔部は、前記ハウジング本体の周方向においてそれぞれ前記ハウジング本体の全周の1/4〜1/2の長さにわたって形成されている請求項1に記載のハウジング形管継手。 2. The housing-type pipe according to claim 1, wherein the outer flange portion and the inner flange portion are formed over a length of ¼ to ½ of the entire circumference of the housing body in the circumferential direction of the housing body. Fittings. 前記外鍔部及び前記内鍔部は、前記ハウジング本体の周方向において1箇所又は複数箇所形成されている請求項1又は2に記載のハウジング形管継手。 3. The housing-type pipe joint according to claim 1, wherein the outer flange portion and the inner flange portion are formed at one or a plurality of locations in a circumferential direction of the housing body . 前記隣接するハウジングの前記固定部同士は、当該隣接するハウジングの長手方向の軸が交差する位置で固定可能になっている請求項1〜3のいずれかに記載のハウジング形管継手。 The housing-type pipe joint according to any one of claims 1 to 3, wherein the fixing portions of the adjacent housings can be fixed at positions where longitudinal axes of the adjacent housings intersect .
JP2010097501A 2010-04-21 2010-04-21 Housing type pipe fitting Expired - Fee Related JP5507321B2 (en)

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CN103174712A (en) * 2013-04-02 2013-06-26 济南玫德铸造有限公司 Casting clamping hoop capable of being dismantled and installed conveniently
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JP7514431B2 (en) 2022-01-12 2024-07-11 ジャパン・エンヂニアリング株式会社 Housing type pipe joint and pipe joint method using the same
KR102664136B1 (en) * 2023-08-14 2024-05-08 (주)뉴아세아 Coupling assembly for pipe connection and manufacturing method thereof

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