JP7502150B2

JP7502150B2 - Housing Pipe Fittings

Info

Publication number: JP7502150B2
Application number: JP2020180214A
Authority: JP
Inventors: 一善大橋
Original assignee: 株式会社リケンCkjv
Priority date: 2020-07-23
Filing date: 2020-10-28
Publication date: 2024-06-18
Anticipated expiration: 2040-10-28
Also published as: JP2022022049A

Description

本発明は、配管の接続に用いるハウジング管継手に関し、特に高圧配管に用いるのに効果的なハウジング管継手に係る。The present invention relates to a housing pipe joint used for connecting piping, and more particularly to a housing pipe joint that is effective for use in high-pressure piping.

施工性に優れた配管の接続方法として、ハウジング管継手を用いた方法が知られている。
一般的なハウジング管継手は、接続する二つの配管の端部外周面に環状のシール部材を被せ、このシール部材を径方向外側から一対の略半円状のハウジング本体で包持し、ハウジング本体の周方向両端部から径方向外側に突出するフランジ部を連結することで配管を接続する。
例えば、特許文献１に開示するハウジング管継手は、このようなハウジング管継手の例である。
しかし、このようなハウジング管継手は、配管の継ぎ部から径方向外側へ大きな圧力が加わると、このフランジ部のみの連結では、その大きな圧力に対して耐えきれずにハウジングの包持部が開く恐れが高く、高圧配管での使用には向かないという問題があった。
特に、１０ＭＰａを超える高い圧力がかかる高圧配管では、略半円状のハウジング本体が変形しやすく、高圧ガスが漏れる原因となる。 A method of connecting pipes using a housing pipe joint is known as a method of connecting pipes that is easy to install.
A typical housing pipe fitting connects the pipes by covering the outer peripheral surfaces of the ends of the two pipes to be connected with an annular sealing member, supporting this sealing member from the radial outside with a pair of approximately semicircular housing bodies, and connecting flange portions that protrude radially outward from both circumferential ends of the housing body.
For example, the housing pipe joint disclosed in Patent Document 1 is an example of such a housing pipe joint.
However, with this type of housing pipe joint, when a large radially outward pressure is applied from the joint of the piping, there is a high risk that the housing's holding part will open because the connection only at the flange part cannot withstand the large pressure, making it unsuitable for use with high-pressure piping.
In particular, in high pressure piping where high pressure exceeding 10 MPa is applied, the approximately semicircular housing body is easily deformed, which may cause leakage of high pressure gas.

実用新案登録第３０８３７７３号公報Utility Model Registration No. 3083773

本発明は、配管施工性に優れ、高圧配管に用いるのに効果的なハウジング管継手の提供を目的とする。An object of the present invention is to provide a housing pipe joint which is excellent in piping workability and is effective for use in high-pressure piping.

本発明に係るハウジング管継手は、外周面に凸部又は凹部を有する一対の管を、シール部材を介して接続するハウジング管継手であって、前記シール部材を径方向外側から包持する一対のハウジング本体と、前記ハウジング本体を軸方向両側から挟持する一対の挟持部材とを備え、前記ハウジング本体は、内周面に前記管の凸部又は凹部と係止する係止部を有し、前記一対の挟持部材は、それぞれ対向する挟持部材又は前記ハウジング本体と締結する締結部を有することを特徴とする。
ここで、対向する挟持部材同士をボルト等で締結する態様と、挟持部材をハウジング本体の側部にボルト等で直接締結する態様が含まれる。
このように、シール部材を径方向外側から包持する一対のハウジング本体は、一対の挟持部材で両側から挟み込むように保持されるので、管の継ぎ部に高い圧力が加わってもハウジングの包持部が開こうとするのをこの挟持部材が抑えるために、耐圧性が向上する。
従来のハウジング管継手において、フランジ部のみで高圧に耐えるためには、それだけ径方向外側へ大きく突出する非常に大きなフランジ部になり、接続する配管同士や配管周囲壁等との間に広いスペースが必要となる問題もあった。
本発明に係るハウジング管継手は、一対のハウジングの包持部が開くのを挟持部材で抑えるのでフランジ部が必ずしも必要ではなく、また、フランジ部を設ける場合にあっては小さいものでよくなる。 The housing pipe joint of the present invention is a housing pipe joint that connects a pair of pipes having convex or concave portions on their outer peripheral surfaces via a sealing member, and is characterized in that it comprises a pair of housing bodies that embrace the sealing member from the radial outside, and a pair of clamping members that clamp the housing body from both axial sides, the housing body having an engaging portion on its inner peripheral surface that engages with the convex or concave portions of the pipes, and the pair of clamping members each having a fastening portion that fastens to the opposing clamping member or the housing body.
Here, there are included a mode in which the opposing clamping members are fastened to each other with bolts or the like, and a mode in which the clamping members are directly fastened to the side portions of the housing main body with bolts or the like.
In this way, a pair of housing bodies which hold the sealing member from the radially outside are held by a pair of clamping members which clamp them from both sides. Therefore, even if high pressure is applied to the pipe joint, the clamping members prevent the housing's holding portion from opening, thereby improving pressure resistance.
In conventional housing pipe joints, in order for the flange portion alone to withstand high pressure, the flange portion would have to be very large and protrude radially outward, which necessitated a large space between the connected pipes and the surrounding walls of the pipes, etc.
In the housing joint according to the present invention, the holding portions of the pair of housings are prevented from opening by the clamping member, so flange portions are not necessarily required, and if a flange portion is provided, it may be small.

本発明において、挟持部材は、複数の前記締結部を有する環状であり、前記締結部は、締結部材を軸方向に貫通するための締結孔を有することが好ましい。
これにより、一対の挟持部材はその間にハウジング本体を保持した状態で、それぞれ対向する挟持部材又はハウジング本体と締結部材にて容易に締結される。
また、複数の締結部を有することで、一対の挟持部材の間でハウジング本体を安定して挟持できる。
従来のハウジング管継手は、周方向両側のフランジ部のみで連結してあるので、耐圧性能を発揮するためには大きな締め付けトルクが必要であり、大きいフランジ部や径の大きいボルト等が必要であった。
一方、本発明に係るハウジング管継手の締結部材は、挟持部材を互いに引き寄せる方向に力があればよく、低いトルクでの配管接続施工が可能となる。 In the present invention, it is preferable that the clamping member is annular and has a plurality of the fastening portions, and that the fastening portions have fastening holes for passing fastening members through in the axial direction.
As a result, the pair of clamping members can be easily fastened to the opposing clamping member or the housing body by the fastening member while holding the housing body therebetween.
Furthermore, by providing a plurality of fastening portions, the housing body can be stably clamped between the pair of clamping members.
Conventional housing pipe joints are connected only by flanges on both circumferential sides, so a large tightening torque is required to demonstrate pressure resistance, and large flanges and large diameter bolts are required.
On the other hand, the fastening members of the housing-pipe joint according to the present invention only need to have a force in the direction that draws the clamping members together, making it possible to connect the pipes with a low torque.

本発明において、前記ハウジング本体は外周面に、径方向外側へ突出した突出部を有し、
前記挟持部材は、前記ハウジング本体の突出部に当接可能な当接部を有してもよい。
このように、ハウジング本体の突出部に挟持部材の当接部を当接することで、ハウジング本体を一対の挟持部材で両側から挟み込むように締結するため、ハウジング本体の軸方向のねじれ変形を抑える効果が大きい。
この場合に、前記一対のハウジング本体は、両側端部にそれぞれ対向配置され、相互に締結可能なフランジ部を有するようにしてもよい。
このようにすると、一対のハウジング本体を両側のフランジ部で相互にボルト等で締結後にハウジング本体の包持部を挟持部材で支えるので小さなフランジ部でよい。 In the present invention, the housing body has a protrusion protruding radially outward on an outer circumferential surface,
The clamping member may have an abutting portion that is capable of abutting against a protruding portion of the housing body.
In this way, by abutting the abutment portion of the clamping member against the protrusion of the housing body, the housing body is clamped from both sides by the pair of clamping members, which is highly effective in suppressing axial torsional deformation of the housing body.
In this case, the pair of housing bodies may have flanges disposed opposite each other at both end portions and capable of being fastened to each other.
In this way, the pair of housing bodies are fastened to each other at the flange portions on both sides with bolts or the like, and then the holding portion of the housing body is supported by the clamping member, so that small flange portions are sufficient.

本発明において、挟持部材は内周面にテーパー部を有し、前記ハウジング本体は外周面に、軸方向から近接する前記挟持部材に向かって縮径する縮径部を有し、前記挟持部材のテーパー部が、前記ハウジング本体の縮径部に圧接してもよい。
このようにすると、一対の挟持部材の間隔が小さくなるように締め付けるだけで、テーパー部の内側方向の分力により、ハウジング本体を管の中心に向けて押し付ける力が働く。
これにより、挟持部材は径方向外側からハウジング本体に圧接するため、高圧配管のように管の継ぎ部から径方向外側等へ高い圧力が加わる場合にも、ハウジング本体の径方向外側等への変形を抑制できる。 In the present invention, the clamping member may have a tapered portion on its inner circumferential surface, and the housing main body may have a reduced diameter portion on its outer circumferential surface which reduces in diameter axially toward the adjacent clamping member, and the tapered portion of the clamping member may be pressed against the reduced diameter portion of the housing main body.
In this way, simply by tightening the pair of clamping members so that the gap between them becomes smaller, a force acts on the housing body toward the center of the tube due to the inward force component of the tapered portion.
As a result, the clamping member is pressed against the housing body from the radially outward side, so that even when high pressure is applied radially outward from a pipe joint, such as in high-pressure piping, deformation of the housing body radially outward, etc. can be suppressed.

本発明に係るハウジング管継手は、シール部材を径方向外側から包持する一対のハウジング本体を、軸方向両側から一対の挟持部材にて挟持し、締結する。
また、挟持部材が径方向外側からハウジング本体を保持するので、ハウジング本体が径方向外側等へ変形するのを抑制する。
これにより、高圧配管のように管の継ぎ部に高い圧力が加わる場合にも、本発明に係るハウジング管継手が有効となる。 In the housing pipe joint according to the present invention, a pair of housing bodies which embrace a seal member from the radial outside are clamped and fastened by a pair of clamping members from both axial sides.
In addition, since the clamping member holds the housing body from the radially outer side, the housing body is prevented from being deformed radially outward.
This makes the housing pipe joint according to the present invention effective even in cases where high pressure is applied to the joint of pipes, such as in high-pressure piping.

本発明に係るハウジング管継手の構造例を、管接続前の状態例として示す。An example of the structure of a housing pipe joint according to the present invention is shown as an example of a state before pipes are connected. （ａ）はハウジング管継手の構造例を、管接続後の状態例として示し、（ｂ）はその部分断面図を示す。1A shows an example of the structure of a housing pipe joint as an example of a state after pipes are connected, and FIG. 1B shows a partial cross-sectional view thereof. ハウジング管継手による管の接続手順を示す。The procedure for connecting pipes using housing pipe fittings is shown below. 図３の接続手順の続きを示す。4 shows a continuation of the connection procedure of FIG. 本発明に係るハウジング管継手の別構造例である実施例２を示す。10 shows a second embodiment of a housing pipe joint according to the present invention. 実施例２の構造例を、管接続前の状態として示す。The structural example of the second embodiment is shown in a state before the tubes are connected. 管接続後の状態例である図５の部分断面図を示す。FIG. 6 is a partial cross-sectional view of FIG. 5 showing an example of a state after pipe connection. 実施例２による管の接続手段を示す。4 shows a pipe connection means according to Example 2. 図８の接続手順の続きを示す。9 shows a continuation of the connection procedure of FIG. 8. 実施例３の構造例を、管接続前の状態として示す。An example of the structure of the third embodiment is shown in a state before the tubes are connected. （ａ）は実施例３の構造例を、管接続後の状態例として示し、（ｂ）はそのＡ－Ａ線断面図を示す。10A shows a structural example of the third embodiment as an example of a state after tubes are connected, and FIG. 10B shows a cross-sectional view taken along line AA.

本発明に係るハウジング管継手の構造例を以下、図に基づいて説明する。
図１～図４に、実施例１のハウジング管継手の構造例を示す。
図１は、ハウジング管継手を構成する一対のハウジング本体２０、２０と一対の挟持部材３０、３０が、シール部材１０を配設した一対の管１，１を接続する前の状態例を示し、図２（ａ）はその接続した後の状態例を、（ｂ）はその部分断面図を示す。
また、このハウジング管継手による管１，１の接続手順を説明するために、図３、図４を示す。 An example of the structure of a housing pipe joint according to the present invention will now be described with reference to the drawings.
1 to 4 show an example of the structure of a housing pipe joint according to a first embodiment.
FIG. 1 shows an example of the state before a pair of housing bodies 20, 20 and a pair of clamping members 30, 30 that constitute a housing pipe joint are connected to a pair of pipes 1, 1 having a sealing member 10 disposed thereon, and FIG. 2(a) shows an example of the state after the connection, and FIG. 2(b) shows a partial cross-sectional view thereof.
3 and 4 are shown to explain the procedure for connecting the pipes 1, 1 using this housing pipe joint.

図１、図２（ｂ）に示すように、管１は、高圧配管用炭素鋼鋼管等からなる管１、１の端部付近の外周面に、転造加工にてリング状の凸部１ａを成形した例である。
シール部材１０はゴム製の弾性リングであり、一対の管１、１の端部外周面に跨がるように配設された後、径方向外側から一対の略半円状のハウジング本体２０、２０により包持される。
環状の挟持部材３０は、その軸方向の面に複数の締結部３１、３１，３１を所定の間隔で設け、締結部３１に締結部材３３を軸方向に貫通するための締結孔３１ａを形成してある。
一対の挟持部材３０、３０が、上記一対のハウジング本体２０、２０を軸方向から挟持し、締結部３１、３１の相互の締結孔３１ａ、３１ａを用いて締結部材３３と止め部材３４にて締結されることで、図２（ａ）に示すような管１、１とハウジング継手の接続構造となる。 As shown in Figures 1 and 2(b), the pipe 1 is an example in which a ring-shaped protrusion 1a is formed by rolling on the outer circumferential surface near the end of the pipe 1, 1 made of carbon steel pipe for high-pressure piping or the like.
The seal member 10 is an elastic ring made of rubber, which is disposed so as to straddle the outer peripheral surfaces of the ends of the pair of pipes 1, 1, and is then supported by a pair of roughly semicircular housing bodies 20, 20 from the radially outer side.
The annular clamping member 30 has a plurality of fastening portions 31, 31, 31 provided at predetermined intervals on its axial surface, and fastening holes 31a are formed in the fastening portions 31 for passing fastening members 33 therethrough in the axial direction.
A pair of clamping members 30, 30 clamp the pair of housing bodies 20, 20 in the axial direction, and are fastened by a fastening member 33 and a retaining member 34 using the mutual fastening holes 31a, 31a of the fastening portions 31, 31, thereby forming a connection structure between the pipes 1, 1 and the housing joint as shown in Figure 2 (a).

本実施例のハウジング管継手による管の接続手順について、図３、図４に基づいて具体的に説明する。
図３（ａ）は、図１に示すような環状の挟持部材３０の内側に管１を挿通した状態で一対の管１、１の端部を概ね突き合せ、管１、１の継ぎ部１ｂを覆うようにその端部外周面にシール部材１０を配設した例を示す。
挟持部材３０の内径は、管１の凸部１ａに接触することがない大きさであることが好ましく、これにより管１に凸部１ａを成形した後からも挟持部材３０の内側に管１を挿通でき、配管を接続する施工性に優れる。
ハウジング本体２０は、内周面にリング状の外リブ２２ａと内リブ２２ｂを形成することで凹部形状の係止部２１を形成し、この係止部２１に管１の凸部１ａを係合させる。
また、左右一対の内リブ２２ｂの間に凹部形状の包持部２３を形成し、この包持部２３にてシール部材１０の外周面を径方向外側から包持した例を、図３（ｂ）に示す。 The procedure for connecting pipes using the housing pipe joint of this embodiment will be specifically described with reference to Figs.
FIG. 3(a) shows an example in which the ends of a pair of pipes 1, 1 are roughly butted together with the pipe 1 inserted inside the annular clamping member 30 as shown in FIG. 1, and a sealing member 10 is disposed on the outer peripheral surface of the ends so as to cover the joint portion 1b of the pipes 1, 1.
It is preferable that the inner diameter of the clamping member 30 is large enough so that it does not come into contact with the convex portion 1a of the pipe 1, thereby allowing the pipe 1 to be inserted inside the clamping member 30 even after the convex portion 1a has been formed on the pipe 1, thereby providing excellent ease of construction for connecting the piping.
The housing body 20 has a ring-shaped outer rib 22a and an inner rib 22b formed on its inner circumferential surface to form a recessed locking portion 21, with which the protrusion 1a of the pipe 1 is engaged.
FIG. 3B shows an example in which a recessed holding portion 23 is formed between a pair of left and right inner ribs 22b, and the outer circumferential surface of the seal member 10 is held by this holding portion 23 from the radially outside.

図４（ａ）に示すように、ハウジング本体２０、２０に対して挟持部材３０、３０を軸方向の両側から近接する。
本実施例のハウジング本体２０は、外周面に近接する挟持部材３０、３０に向かって縮径するリング状の縮径部２５，２５を形成し、縮径部２５，２５よりも軸方向内側に、径方向外側へ突出したリング状の突出部２６，２６を形成してある。
一方、挟持部材３０は、内周面に近接するハウジング本体２０に向かって拡径する環状のテーパー部３２を形成してあり、このテーパー部３２をハウジング本体２０の縮径部２５に軸方向から近接する。
図４（ｂ）は、挟持部材３０のテーパー部３２をハウジング本体２０の縮径部２５に摺接するように圧接した例を示す。
一対の挟持部材３０、３０は、対向する締結部３１、３１の相互の締結孔３１ａ、３１ａを用いて、ボルト等の締結部材３３とナット等の止め部材３４にて締結される。
このように、挟持部材３０のテーパー部３２が径方向外側からハウジング本体２０の縮径部２５を圧接するとともに、テーパー部３２が縮径部２５を軸方向へ押圧することで、ハウジング本体２０がその径方向内側のシール部材１０を圧縮させる。
なお、挟持部材３０は、ハウジング本体２０の突出部２６の軸方向外側面２６ａと対向する面であって、軸方向外側面２６ａに当接可能な当接部３５を有してもよい。 As shown in FIG. 4A, the clamping members 30, 30 are brought close to the housing bodies 20, 20 from both axial sides.
The housing body 20 in this embodiment forms ring-shaped reduced diameter portions 25, 25 whose diameter reduces toward the clamping members 30, 30 adjacent to the outer circumferential surface, and forms ring-shaped protruding portions 26, 26 that protrude radially outwardly axially inward from the reduced diameter portions 25, 25.
On the other hand, the clamping member 30 is formed with an annular tapered portion 32 that expands in diameter toward the housing body 20 adjacent to its inner circumferential surface, and this tapered portion 32 is adjacent to the reduced diameter portion 25 of the housing body 20 in the axial direction.
FIG. 4B shows an example in which the tapered portion 32 of the clamping member 30 is pressed against the reduced diameter portion 25 of the housing body 20 so as to slide against the tapered portion 32 .
The pair of clamping members 30, 30 are fastened together by fastening members 33 such as bolts and retaining members 34 such as nuts, using the fastening holes 31a, 31a of the opposing fastening portions 31, 31.
In this way, the tapered portion 32 of the clamping member 30 presses against the reduced diameter portion 25 of the housing main body 20 from the radially outside, and the tapered portion 32 presses the reduced diameter portion 25 in the axial direction, causing the housing main body 20 to compress the sealing member 10 on its radially inner side.
The clamping member 30 may have a contact portion 35 that faces the axially outer side surface 26a of the protrusion 26 of the housing body 20 and is capable of contacting the axially outer side surface 26a.

本実施例は、転造加工により管の外周面にリング状の凸部を成形した例を示したが、外周面に転造溝からなる凹部を成形してもよく、角形又は丸形のリングを管の外周面に溶接してもよい。
また、本実施例における挟持部材は、その軸方向の面に３つの締結部をおよそ均等な間隔で設けた例であるが、締結部の数はハウジング管継手の外径の大きさに合せてもよく、外径が大きくなるほど、締結部の数を増やすことが望ましい。 This embodiment shows an example in which a ring-shaped protrusion is formed on the outer peripheral surface of a pipe by rolling processing, but a recess consisting of a rolling groove may be formed on the outer peripheral surface, or a square or round ring may be welded to the outer peripheral surface of the pipe.
In addition, the clamping member in this embodiment is an example in which three fastening portions are provided at approximately equal intervals on its axial surface, but the number of fastening portions may be adjusted to match the outer diameter of the housing pipe joint, and it is desirable to increase the number of fastening portions as the outer diameter increases.

本発明に係るハウジング管継手のハウジング本体２０は、図５に示すように、周方向両端部からそれぞれ径方向外側に突出するフランジ部２４を有するものであってもよいが、この場合には連結部材２７、２８にて一対のハウジング本体２０の対向するフランジ部２４を互いに連結し、連結したハウジング本体２０を一対の挟持部材３０で軸方向から挟持し、フランジ部２４の軸方向外側に位置する一対の挟持部材３０を締結するため、フランジ部２４は径方向外側に大きく突出するような大きさでなくてよい。 The housing body 20 of the housing pipe joint according to the present invention may have flange portions 24 protruding radially outward from both circumferential ends, as shown in Figure 5. In this case, however, the opposing flange portions 24 of a pair of housing bodies 20 are connected to each other by connecting members 27, 28, the connected housing bodies 20 are clamped in the axial direction by a pair of clamping members 30, and the pair of clamping members 30 located axially outside the flange portions 24 are fastened, so that the flange portions 24 do not need to be large enough to protrude radially outward.

上記フランジ部２４を有するハウジング管継手として、図６～図９に実施例２を、図１０、図１１に実施例３を示す。
実施例２，３は、ハウジング本体２０の縮径部２５及び挟持部材３０のテーパー部３２を設ける替わりに、ハウジング本体２０のフランジ部２４同士をボルト等で締結及び連結した後にハウジング本体２０の包持部が開くのを挟持部材３０で防止した例である。
このようなハウジング管継手の場合には、例えば図６、図１０に示すように、ハウジング本体２０の外周面には縮径部２５の替わりに円筒状の外周部２９を形成し、挟持部材３０の内周面にはテーパー部３２の替わりに傾斜していない保持部３６を形成してある。
図１０に示すように実施例３は、ハウジング本体２０の外周面に挟持部材３０の保持部３６にて保持される外周部２９、２９と、この外周部２９、２９よりも軸方向内側に径方向外側へ突出したリング状の突出部２６を形成してある。
突出部２６には、挟持部材３０の締結部３１と締結可能な被締結部２６ｂを設けてある。
被締結部２６ｂは、例えば図１０に示すように突出部２６から部分的に径方向外側へ突出するように形成してある。
ハウジング本体２０と挟持部材３０は、被締結部２６ｂに設けた被締結孔２６ｃと締結部３１の締結孔３１ａを用いて締結部材３３にて締結可能である。 As a housing pipe joint having the above-mentioned flange portion 24, a second embodiment is shown in FIGS. 6 to 9, and a third embodiment is shown in FIGS.
In Examples 2 and 3, instead of providing a reduced diameter portion 25 of the housing main body 20 and a tapered portion 32 of the clamping member 30, the clamping member 30 prevents the holding portion of the housing main body 20 from opening after the flange portions 24 of the housing main body 20 are fastened and connected to each other with bolts or the like.
In the case of such a housing pipe joint, as shown in Figures 6 and 10, for example, a cylindrical outer peripheral portion 29 is formed on the outer peripheral surface of the housing body 20 instead of the reduced diameter portion 25, and a non-inclined retaining portion 36 is formed on the inner peripheral surface of the clamping member 30 instead of the tapered portion 32.
As shown in Figure 10, in the third embodiment, outer circumferential portions 29, 29 are formed on the outer circumferential surface of the housing body 20 and are held by the holding portion 36 of the clamping member 30, and a ring-shaped protrusion 26 is formed axially inwardly of the outer circumferential portions 29, 29 and protrudes radially outward.
The protruding portion 26 is provided with a fastening portion 26 b that can be fastened to a fastening portion 31 of the clamping member 30 .
The fastened portion 26b is formed so as to partially protrude radially outward from the protruding portion 26 as shown in FIG.
The housing body 20 and the clamping member 30 can be fastened together with a fastening member 33 using a fastening hole 26 c provided in the fastening portion 26 b and a fastening hole 31 a in the fastening portion 31 .

実施例２、３のハウジング管継手による管の接続手順について、実施例２を例として図８，図９に基づいて具体的に説明する。
まず、図８（ａ）、（ｂ）に示すようにハウジング本体２０の係止部２１に管１の凸部１ａを係合させ、シール部材１０の外周面を径方向外側から包持部２３にて包持し、一対のハウジング本体２０、２０の対向するフランジ部２４，２４を、その相互の連結孔２４ａ、２４ａを用いてボルト等の連結部材２７とナット等の連結部材２８にて連結するように締結する。
締結後のハウジング本体２０、２０に対して、図９（ａ）に示すように挟持部材３０、３０を軸方向の両側から近接する。
図９（ｂ）に示すように、挟持部材３０の当接部３５がハウジング本体２０の有する突出部２６の軸方向外側面２６ａに当接するように、挟持部材３０、３０の対向する締結部３１、３１を締結部材３３と止め部材３４にて締結する。
実施例３の場合には図１１に示すように、ハウジング本体２０の有する被締結部２６ｂの被締結孔２６ｃと挟持部材３０の締結孔３１ａを締結部材３３にて締結する。
なお、被締結孔２６ｃは貫通孔であっても、有底孔であってもよい。
実施例２、３のように、当接部３５が軸方向外側面２６ａに当接するように締結されることで、一対の挟持部材３０、３０がハウジング本体２０をより安定して締結挟持し、挟持部材３０の保持部３６が径方向外側からハウジング本体２０の外周部２９を保持することで、高圧配管のように管の継ぎ部から径方向外側等へ高い圧力が加わる場合にも、ハウジング本体の径方向外側等への変形を抑制できる。
このようにすると、挟持部材３０にテーパー部３２を設けた場合よりもハウジング本体２０への取り付けが容易になる。 The procedure for connecting pipes using the housing pipe joints of the second and third embodiments will be specifically described with reference to Figs. 8 and 9, taking the second embodiment as an example.
First, as shown in Figures 8(a) and (b), the convex portion 1a of the pipe 1 is engaged with the locking portion 21 of the housing body 20, the outer peripheral surface of the sealing member 10 is held by the holding portion 23 from the radially outside, and the opposing flange portions 24, 24 of the pair of housing bodies 20, 20 are fastened so as to be connected using a connecting member 27 such as a bolt and a connecting member 28 such as a nut via their mutual connecting holes 24a, 24a.
As shown in FIG. 9A, the clamping members 30, 30 are brought close to the fastened housing bodies 20, 20 from both axial sides.
As shown in Figure 9 (b), the opposing fastening portions 31, 31 of the clamping members 30, 30 are fastened with a fastening member 33 and a stop member 34 so that the abutment portion 35 of the clamping member 30 abuts against the axially outer surface 26a of the protrusion 26 of the housing main body 20.
In the case of the third embodiment, as shown in FIG. 11, a fastening hole 26c of a fastening portion 26b of the housing body 20 and a fastening hole 31a of the clamping member 30 are fastened together by a fastening member 33. As shown in FIG.
In addition, the fastening hole 26c may be a through hole or a bottomed hole.
As in Examples 2 and 3, by fastening the abutment portion 35 so that it abuts against the axial outer surface 26a, the pair of clamping members 30, 30 fasten and clamp the housing body 20 more stably, and the holding portion 36 of the clamping member 30 holds the outer periphery 29 of the housing body 20 from the radial outside, deformation of the housing body in the radial outward direction, etc. can be suppressed even when high pressure is applied radially outward, etc. from a pipe joint, such as in high-pressure piping.
In this way, attachment to the housing body 20 becomes easier than when the clamping member 30 is provided with a tapered portion 32 .

１管
１ａ凸部
１０シール部材
２０ハウジング本体
２１係止部
２５縮径部
２６突出部
３０挟持部材
３１締結部
３１ａ締結孔
３２テーパー部
３３締結部材
３５当接部REFERENCE SIGNS LIST 1 Tube 1a Protruding portion 10 Seal member 20 Housing body 21 Locking portion 25 Reduced diameter portion 26 Projecting portion 30 Clamping member 31 Fastening portion 31a Fastening hole 32 Tapered portion 33 Fastening member 35 Contact portion

Claims

外周面に凸部又は凹部を有する一対の管の継ぎ部を覆うように端部外周面に配設したシール部材を径方向外側から包持する一対のハウジング本体と、前記ハウジング本体を軸方向両側から挟持する一対の挟持部材とを備え、
前記ハウジング本体は、内周面に前記管の凸部又は凹部と係止する係止部と、径方向外側に突出するフランジ部とを有し、一対のハウジング本体は、互いに対向するフランジ部が連結され、
前記一対の挟持部材は、前記ハウジング本体のフランジ部の軸方向外側に位置して互いに締結されることを特徴とするハウジング管継手。 The housing includes a pair of housing bodies that radially surround a seal member disposed on the outer peripheral surface of the end portion so as to cover a joint portion of a pair of pipes having a convex portion or a concave portion on the outer peripheral surface, and a pair of clamping members that clamp the housing bodies from both axial sides,
The housing body has an engaging portion on an inner circumferential surface thereof that engages with a convex portion or a concave portion of the pipe, and a flange portion that protrudes radially outward , and the pair of housing bodies are connected to each other at their opposing flange portions,
A housing pipe joint, wherein the pair of clamping members are located axially outside the flange portion of the housing body and are fastened to each other.

前記ハウジング本体はさらに、外周面に径方向外側へ突出した突出部を有し、
前記挟持部材は、前記ハウジング本体の突出部の軸方向外側に当接可能な当接部を有することを特徴とする請求項１に記載のハウジング管継手。 The housing body further has a protrusion protruding radially outward on an outer circumferential surface,
2. The housing-pipe joint according to claim 1, wherein the clamping member has an abutment portion that is capable of abutting against an axially outer side of the protrusion of the housing body.

前記挟持部材は内周面にテーパー部を有し、
前記ハウジング本体は外周面に軸方向から近接する前記挟持部材に向かって縮径する縮径部を有し、
前記挟持部材のテーパー部が、前記ハウジング本体の縮径部に圧接することを特徴とする請求項１又は２に記載のハウジング管継手。 The clamping member has a tapered portion on an inner circumferential surface,
The housing body has an outer circumferential surface having a reduced diameter portion that reduces in diameter toward the clamping member adjacent thereto in the axial direction,
3. A housing-pipe joint according to claim 1, wherein the tapered portion of the clamping member is brought into pressure contact with the reduced diameter portion of the housing body.