JP2003014172A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JP2003014172A JP2003014172A JP2001194071A JP2001194071A JP2003014172A JP 2003014172 A JP2003014172 A JP 2003014172A JP 2001194071 A JP2001194071 A JP 2001194071A JP 2001194071 A JP2001194071 A JP 2001194071A JP 2003014172 A JP2003014172 A JP 2003014172A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- gasket
- annular
- peripheral surface
- pipes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Joints With Sleeves (AREA)
- Gasket Seals (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、両パイプの管端部
を円筒形のガスケットで密封するとともに、締め付けハ
ウジングによってガスケットの保形およびパイプの抜け
止めを行う管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint in which the pipe ends of both pipes are sealed with a cylindrical gasket and the tightening housing keeps the gasket in shape and prevents the pipe from coming off.
【0002】[0002]
【従来の技術】配管施工において、ビクトリック形管継
手は、ステンレス鋼管、炭素鋼管、鉄管などに容易に適
用でき、パイプのたわみや伸縮を吸収できる可動式の継
手である。一般に、ビクトリック形管継手は、接続する
パイプの両管端部に円環状のガスケットを嵌め、その上
から短筒形のハウジングを被せてボルトとナットで締め
付けることにより、該ガスケットを管端部に圧着して密
封する。2. Description of the Related Art In pipe construction, a victoric pipe joint is a movable joint that can be easily applied to stainless steel pipes, carbon steel pipes, iron pipes, etc., and can absorb bending and expansion and contraction of pipes. In general, a victorique type pipe joint is constructed by fitting an annular gasket to both pipe ends of a pipe to be connected, covering a short tubular housing from above, and tightening the gasket with bolts and nuts so that the pipe ends Press and seal.
【0003】 ビクトリック形管継手では、短筒形の締
め付けハウジングの両周側縁を両管端部に係止すること
を要し、このために両管端部にそれぞれ金属リングを溶
接しているが、金属リングの溶接は非常に煩雑な作業で
あるため、現在では管端部に溝付け加工して環状溝を形
成することが主流になっている。組み立ての際には、締
め付けハウジングの両端部における内方膨出部を管端部
の環状溝に嵌入し、管継手の抜け止めを行っている。In the case of a victorique type pipe joint, it is necessary to lock both circumferential side edges of a short-cylinder-shaped tightening housing to both pipe ends, and for this purpose, metal rings are welded to both pipe ends, respectively. However, since welding of metal rings is a very complicated work, it is currently the mainstream to form an annular groove by grooving the pipe end. At the time of assembly, the inwardly bulging portions at both ends of the tightening housing are fitted into the annular groove at the end of the pipe to prevent the pipe joint from coming off.
【0004】[0004]
【発明が解決しようとする課題】この種の管継手は、ガ
スケットの内径がパイプ外径よりも小さく、ゴム製のガ
スケットの内径を拡げてパイプの管端部に装着すること
が非常に煩雑である。また、ハウジングでガスケットを
締め込んで圧縮変形させ、該ガスケットを管端部に圧着
するため、ボルト−ナットによる締め付けが不十分であ
ると継手の水洩れが発生し、強く締め付けすぎるとガス
ケットを損傷することになる。In this type of pipe joint, the inner diameter of the gasket is smaller than the outer diameter of the pipe, and it is very troublesome to expand the inner diameter of the rubber gasket and attach it to the pipe end portion of the pipe. is there. In addition, the gasket is tightened in the housing to compress and deform it, and the gasket is crimped to the pipe end.If the bolts and nuts are not tightened sufficiently, water will leak from the joint, and if tightened too much, the gasket will be damaged. Will be done.
【0005】 既存の管継手として、特公昭55−25
316号で開示するように、ガスケットとハウジングが
一体であり、パイプを差し込むだけで施工できる管継手
が存在する。この管継手は、パイプの外周面に抜け止め
部材の爪を喰い込ませるため、パイプ外周面の仕上がり
が悪いと抜け易く、締め込みが緩くても抜けてしまうと
いう欠陥がある。一方、特開平7−119870号は、
抜管防止機構を備えさらに施工時の作業忘れを防ぐこと
ができる反面、ガスケットの締め込みのうえに2本の縮
径バンドを緊締することを要し、必要作業が多くなるう
えに継手の構造が複雑で高価になってしまう。As an existing pipe joint, Japanese Patent Publication No. 55-25
As disclosed in Japanese Patent No. 316, there is a pipe joint in which a gasket and a housing are integrated and which can be constructed by simply inserting a pipe. In this pipe joint, the claws of the retaining member are bitten into the outer peripheral surface of the pipe, and therefore, there is a defect that if the outer peripheral surface of the pipe is poorly finished, it will easily come off, and even if the tightening is loose, it will come off. On the other hand, Japanese Patent Laid-Open No. 7-119870 discloses
While it is equipped with a pipe expulsion prevention mechanism to prevent forgetting work during construction, it requires tightening the two compression bands in addition to tightening the gasket, which increases the required work and the joint structure. It is complicated and expensive.
【0006】 本発明は、従来の管継手に関する前記の
問題点を改善するために提案されたものであり、パイプ
の管端部への装着が簡単であるとともにハウジングの締
め込み力が小さくてよい管継手を提供することを目的と
している。本発明の他の目的は、全体構造が単純で安価
であるうえに取り付け位置を誤ることがない管継手を提
供することである。The present invention has been proposed in order to improve the above-mentioned problems associated with conventional pipe joints, and it is easy to attach the pipe to the pipe end and the housing may have a small tightening force. It is intended to provide a pipe joint. Another object of the present invention is to provide a pipe joint which has a simple overall structure and is inexpensive, and which does not have a wrong mounting position.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る管継手は、両パイプの管端部の外径よ
りも若干大きい内径を有する比較的薄肉の円筒形のガス
ケットと、該ガスケットの外周面を囲撓する締め付けハ
ウジングとを備え、前記ガスケットの内周面に設けた環
状突起の内径はパイプの外径よりも若干小さい。このガ
スケットでは、その内周面の環状突起を少なくとも2列
以上設け、該環状突起の縦断面がほぼ直角三角形状であ
ると好ましい。In order to achieve the above object, a pipe joint according to the present invention comprises a relatively thin-walled cylindrical gasket having an inner diameter slightly larger than the outer diameters of the pipe ends of both pipes. And a tightening housing that surrounds and flexes the outer peripheral surface of the gasket, and the inner diameter of the annular protrusion provided on the inner peripheral surface of the gasket is slightly smaller than the outer diameter of the pipe. In this gasket, it is preferable that at least two rows of annular projections are provided on the inner peripheral surface of the gasket, and the longitudinal projections of the annular projections have a substantially right triangle shape.
【0008】 本発明の管継手により、管端部にそれぞ
れ2列の環状溝を設けたパイプを接続する。この場合、
ガスケットの両端部における内方膨出部を両パイプ端側
の環状溝に嵌入し、且つハウジングの両端部における内
方膨出部を両パイプ内方側の環状溝に嵌入する。With the pipe joint of the present invention, pipes each having two rows of annular grooves at the pipe end are connected. in this case,
The inner bulging portions at both ends of the gasket are fitted into the annular grooves on both pipe ends, and the inner bulging portions at both ends of the housing are fitted into the inner annular grooves of both pipes.
【0009】 本発明の管継手により、管端部にそれぞ
れ1列の環状溝を設けたパイプを接続してもよい。この
場合、ガスケットおよびハウジングの両端部における内
方膨出部をそれぞれ両パイプの環状溝に嵌入する。With the pipe joint of the present invention, pipes each provided with a row of annular grooves at the pipe ends may be connected. In this case, the inwardly bulged portions at both ends of the gasket and the housing are fitted into the annular grooves of both pipes, respectively.
【0010】 また、本発明の管継手により、管端部に
それぞれ2列または3列以上の環状突起を設けたパイプ
を接続してもよい。この場合、ガスケットの両端部にお
ける内方膨出部を両パイプの管端側の環状突起の内側壁
または環状突起間に位置させ、且つハウジングの両端部
における内方膨出部を両パイプ内方側の環状突起間に位
置させる。Further, the pipe joint of the present invention may be used to connect pipes each provided with two or three or more rows of annular projections at their ends. In this case, the inward bulging portions at both ends of the gasket are located between the inner wall of the annular protrusion on the pipe end side of both pipes or between the annular protrusions, and the inwardly bulging portions at both ends of the housing are inwardly of both pipes. It is located between the side annular protrusions.
【0011】[0011]
【発明の実施の形態】本発明に係る管継手1を使用する
場合、図1に示すように、接続すべきパイプ7,7にそ
れぞれ環状溝3,5を設ける。この環状溝の数は、図1
のように2列が一般的であるが、図3のように1列でも
よい。この環状溝の代わりに、図4のような環状突起4
8,50を設けてもよく、この環状突起の数は2列また
は3列以上である。図1では、ガスケット8およびハウ
ジング10などは多少デフォルメされており、ガスケッ
ト8の内径とパイプ7の外径との差はより少なく、ハウ
ジング10の肉厚はより薄くなる。BEST MODE FOR CARRYING OUT THE INVENTION When the pipe joint 1 according to the present invention is used, as shown in FIG. 1, the pipes 7, 7 to be connected are provided with annular grooves 3, 5, respectively. The number of this annular groove is shown in FIG.
As shown in FIG. 3, two columns are generally used, but one column may be used as shown in FIG. Instead of this annular groove, an annular protrusion 4 as shown in FIG.
8, 50 may be provided, and the number of the annular protrusions is two rows or three rows or more. In FIG. 1, the gasket 8 and the housing 10 are slightly deformed, the difference between the inner diameter of the gasket 8 and the outer diameter of the pipe 7 is smaller, and the thickness of the housing 10 is thinner.
【0012】 円筒形のガスケット8は、比較的薄肉の
ゴムや軟質プラスチック製であるので変形しやすく、パ
イプ7の管端部の外径よりも若干大きい内径を有する。
ガスケット8には、その内周面に環状突起12,14を
設け、各パイプ7ごとに少なくとも2列の環状突起が当
接する。つまり、ガスケット8の長手方向中心から少な
くとも2列設けるため、総計では少なくとも4列の環状
突起を所定間隔おいて設け、該環状突起は6列または8
列設けることも可能である。この環状突起は、各1列だ
けであると水漏れの防止が不完全になりやすい。The cylindrical gasket 8 is made of a relatively thin rubber or soft plastic and therefore is easily deformed, and has an inner diameter slightly larger than the outer diameter of the pipe end portion of the pipe 7.
The gasket 8 is provided with annular projections 12 and 14 on its inner peripheral surface, and at least two rows of annular projections abut on each pipe 7. That is, since at least two rows are provided from the center of the gasket 8 in the longitudinal direction, a total of at least four rows of annular protrusions are provided at predetermined intervals, and the annular protrusions have six rows or eight.
It is also possible to provide rows. If there is only one row for each of these annular protrusions, the prevention of water leakage will tend to be incomplete.
【0013】 ガスケット8において、各環状突起1
2,14の縦断面はほぼ直角三角形状であると好まし
く、パイプ挿入側の側壁面16(図2)を傾斜させ、そ
の反対側の側壁面18を垂直に定めると、パイプ7の嵌
入が容易であるうえに水漏れを防止しやすい。この環状
突起の縦断面は、V字形、U字形や半円形にすることも
可能である。環状突起12,14の最小内径は、嵌入パ
イプ7の外径よりも僅かに小さく、該環状突起がパイプ
7の外周面と全周で密着でき且つ大きく変形することを
要しない内径に定める。In the gasket 8, each annular protrusion 1
It is preferable that the vertical cross sections of 2 and 14 are substantially right-angled triangles. When the side wall surface 16 (FIG. 2) on the pipe insertion side is inclined and the side wall surface 18 on the opposite side is vertically set, the pipe 7 can be easily inserted. Besides, it is easy to prevent water leakage. The vertical cross section of the annular protrusion can be V-shaped, U-shaped, or semicircular. The minimum inner diameters of the annular protrusions 12 and 14 are set to be slightly smaller than the outer diameter of the fitting pipe 7 so that the annular protrusions can be in close contact with the outer peripheral surface of the pipe 7 over the entire circumference and need not be greatly deformed.
【0014】 ガスケット8は、その両端部に内方膨出
部20,20を形成することにより、両端部の内径が狭
くなっている。各内方膨出部20の内径は環状溝3の外
径とほぼ合致し、両膨出部を環状溝3に嵌入することで
ガスケット8を正確に位置決めできる。内方膨出部2
0,20をパイプ7,7の環状溝3に嵌入すると、パイ
プ7,7の前端面22は4〜10mmの間隙を有し、こ
れによって各パイプ7のたわみや伸縮を吸収できる。The inner diameter of both ends of the gasket 8 is narrowed by forming the inward bulging portions 20, 20 at both ends thereof. The inner diameter of each inward bulged portion 20 substantially matches the outer diameter of the annular groove 3, and the gasket 8 can be accurately positioned by fitting both bulged portions into the annular groove 3. Inward bulge 2
When 0 and 20 are fitted in the annular groove 3 of the pipes 7 and 7, the front end face 22 of the pipes 7 and 7 has a gap of 4 to 10 mm, and thus the bending and expansion and contraction of each pipe 7 can be absorbed.
【0015】 締め付けハウジング10は、例えば、ガ
スケット8の外周面を囲撓する円形側面に近い湾曲プレ
ートからなり、該プレートにおける円周方向の両端部に
それぞれロッド24を取り付け、平行ロッド24,24
のネジ孔間に締着ボルト26をねじ込む構造である。こ
のハウジングは、図6に示すように、パイプ7,7の環
状溝3に嵌まるほぼ半円筒形の半割り体70,70で構
成してもよい。The tightening housing 10 is formed of, for example, a curved plate that is close to a circular side surface that surrounds and flexes the outer peripheral surface of the gasket 8. The rods 24 are attached to both ends of the plate in the circumferential direction, and the parallel rods 24, 24 are provided.
This is a structure in which the tightening bolt 26 is screwed between the screw holes. As shown in FIG. 6, this housing may be composed of substantially half-cylindrical halves 70, 70 that fit into the annular grooves 3 of the pipes 7, 7.
【0016】 ハウジング10は、その両端部に内方膨
出部28,28を形成することにより、両端部の内径が
狭くなっている。ハウジング10の締め付け状態におい
て、膨出部28の内径は環状溝5の外径とほぼ合致し、
両膨出部を環状溝5に嵌入することでハウジング10を
正確に位置決めでき、且つ管継手1からパイプ7,7が
抜けることを防止する。The housing 10 has inner bulging portions 28, 28 formed at both ends thereof, so that the inner diameters of the both ends are narrowed. In the tightened state of the housing 10, the inner diameter of the bulging portion 28 substantially matches the outer diameter of the annular groove 5,
By fitting both bulged portions into the annular groove 5, the housing 10 can be accurately positioned and the pipes 7, 7 are prevented from coming off the pipe joint 1.
【0017】[0017]
【実施例】次に、本発明を実施例に基づいて説明する
が、本発明は実施例に限定されるものではない。図1は
本発明に係る管継手1の断面を示し、該管継手を介し
て、管端部にそれぞれ環状溝3,5を設けたパイプ7,
7を接続する。環状溝3,5は所定の間隔を有し、パイ
プ端側の環状溝3はガスケット用であり、パイプ内方側
の環状溝5はハウジング用である。パイプ7は例えばス
テンレス鋼管であり、該パイプにおける2列の溝付け加
工はパイプ加工工場で行えばよい。EXAMPLES Next, the present invention will be explained based on examples, but the present invention is not limited to the examples. FIG. 1 shows a cross section of a pipe joint 1 according to the present invention, through which a pipe 7 having annular grooves 3 and 5 provided at pipe ends,
Connect 7. The annular grooves 3 and 5 have a predetermined interval, the annular groove 3 on the pipe end side is for a gasket, and the annular groove 5 on the inner side of the pipe is for a housing. The pipe 7 is, for example, a stainless steel pipe, and grooving of the two rows of the pipe may be performed in a pipe processing factory.
【0018】 管継手1は、パイプ7の管端部の外径よ
りも若干大きい内径を有する円筒形のガスケット8と、
該ガスケットの外周面を囲撓する締め付けハウジング1
0とを有する。ガスケット8は、薄肉であるので変形容
易な合成ゴムや天然ゴム製であり、ハウジング10は、
一般に鉄、ステンレス鋼、銅やアルミニウムなどの金属
製である。The pipe joint 1 includes a cylindrical gasket 8 having an inner diameter slightly larger than the outer diameter of the pipe end of the pipe 7.
Tightening housing 1 that surrounds the outer peripheral surface of the gasket
Has 0 and. The gasket 8 is made of synthetic rubber or natural rubber that is easily deformed because it is thin, and the housing 10 is
Generally, it is made of metal such as iron, stainless steel, copper and aluminum.
【0019】 円筒形のガスケット8は、パイプ7の管
端部の外径よりも僅かに大きい直径の内周面を有し、そ
の内周面には嵌入パイプ7ごとに2列の環状突起12,
14が当接し、つまり総計4列の環状突起を所定間隔お
いて設ける。各環状突起12,14は、その縦断面がほ
ぼ直角三角形状であり、嵌入パイプ7に対して挿入側の
側壁面16(図2)を傾斜させ、引き抜き側の側壁面1
8を垂直に定める。直角三角形の頂点に相当する環状突
起12,14の内径は、嵌入パイプ7の外径よりも僅か
に小さく、しかもパイプ7の外周面と全周で密着できる
内径に定める。The cylindrical gasket 8 has an inner peripheral surface having a diameter slightly larger than the outer diameter of the pipe end of the pipe 7, and the inner peripheral surface has two rows of annular projections 12 for each fitting pipe 7. ,
14 contact, that is, a total of four rows of annular projections are provided at predetermined intervals. Each of the annular projections 12 and 14 has a vertical cross section of a substantially right-angled triangular shape, and the side wall surface 16 (FIG. 2) on the insertion side is inclined with respect to the fitting pipe 7, and the side wall surface 1 on the extraction side 1 is formed.
Set 8 vertically. The inner diameters of the annular protrusions 12 and 14 corresponding to the vertices of the right triangle are set to be slightly smaller than the outer diameter of the fitting pipe 7 and further capable of closely contacting the outer peripheral surface of the pipe 7 over the entire circumference.
【0020】 ガスケット8は、その両端部に内方膨出
部20,20を形成することにより、両端部の内径が狭
くなっている。内方膨出部20の縦断面は、パイプ端側
の環状溝3のそれと対応し、該膨出部の内径は環状溝3
の外径とほぼ合致する。ガスケット8の内方膨出部2
0,20をパイプ7,7の環状溝3に嵌入すると、図1
に例示するようにパイプ7,7の前端面22は所定の間
隙を有し、その間隔は通常5mm前後である。The inner diameter of both ends of the gasket 8 is narrowed by forming the inward bulging portions 20 and 20 at both ends thereof. The vertical cross section of the inward bulging portion 20 corresponds to that of the annular groove 3 on the pipe end side, and the inner diameter of the bulging portion is the annular groove 3
It almost matches the outer diameter of. Inner bulge 2 of gasket 8
When 0 and 20 are fitted into the annular groove 3 of the pipes 7 and 7, as shown in FIG.
As illustrated in, the front end faces 22 of the pipes 7, 7 have a predetermined gap, and the gap is usually around 5 mm.
【0021】 締め付けハウジング10は、ガスケット
8の外周面を囲撓する円形側面に近い湾曲プレートから
なり、該プレートにおける円周方向の両端部にロッド2
4(2本の内の1本を図示)を取り付け、平行ロッド2
4,24のネジ孔に締着ボルト26をねじ込む。締着ボ
ルト26は、ハウジング10の横幅に応じて定め、図1
のように2本でも図3のように1本でもよい。The tightening housing 10 is composed of a curved plate that is close to a circular side surface that surrounds the outer peripheral surface of the gasket 8 and has rods 2 at both ends in the circumferential direction of the plate.
4 (one of the two shown) is attached and the parallel rod 2
The fastening bolt 26 is screwed into the screw holes of 4, 24. The tightening bolt 26 is defined according to the lateral width of the housing 10, and as shown in FIG.
It may be two as shown in FIG. 1 or one as shown in FIG.
【0022】 ハウジング10は、例えば、浅いU字形
の縦断面を有し、その両端部に内方膨出部28,28を
形成することにより、両端部の内径が狭くなっている。
内方膨出部28の縦断面は、パイプ端側の環状溝5のそ
れと対応し、締め付け状態において、膨出部28の内径
は環状溝5の外径とほぼ合致する。ハウジング内周面の
内径は、締め付け状態において、ガスケット外周面の外
径とほぼ同一または僅かに小さくなるように定める。The housing 10 has, for example, a shallow U-shaped vertical cross section, and the inner bulging portions 28, 28 are formed at both ends of the housing 10 so that the inner diameters of the both ends are narrowed.
The vertical cross section of the inward bulge 28 corresponds to that of the annular groove 5 on the pipe end side, and the inner diameter of the bulge 28 substantially matches the outer diameter of the annular groove 5 in the tightened state. The inner diameter of the inner peripheral surface of the housing is set to be substantially the same as or slightly smaller than the outer diameter of the outer peripheral surface of the gasket in the tightened state.
【0023】 管継手1を取り付ける際には、ガスケッ
ト8を一方のパイプ7と嵌合し、該ガスケットの内方膨
出部20を該パイプの環状溝3に嵌入する。次に他方の
パイプ7をガスケット8の他端部から挿入し、該パイプ
の環状溝3をガスケット8の他方の膨出部20と嵌合す
る。パイプ7,7の挿入は、その外径がガスケット内径
よりも大きいので、環状突起12,14を若干変形する
だけで楽に行え、ガスケット8の膨出部20,20をパ
イプ7,7の環状溝3に嵌入するため、該ガスケットの
位置決めが容易である。パイプ7,7を完全に挿入した
状態を図1に示し、この状態でパイプ7,7の前端面2
2は間隙を有し、ガスケット8は環状突起12,14を
介してパイプ7の外周面と十分に密着する。When the pipe joint 1 is attached, the gasket 8 is fitted to the one pipe 7, and the inward bulging portion 20 of the gasket is fitted into the annular groove 3 of the pipe. Next, the other pipe 7 is inserted from the other end of the gasket 8, and the annular groove 3 of the pipe is fitted to the other bulge 20 of the gasket 8. Since the outer diameter of the pipes 7 and 7 is larger than the inner diameter of the gasket, the pipes 7 and 7 can be easily inserted by slightly deforming the annular protrusions 12 and 14, and the bulged portions 20 and 20 of the gasket 8 can be inserted into the annular grooves of the pipes 7 and 7. Since it is fitted in the No. 3, the gasket can be easily positioned. FIG. 1 shows a state in which the pipes 7, 7 are completely inserted, and in this state, the front end face 2 of the pipes 7, 7 is
2 has a gap, and the gasket 8 is in close contact with the outer peripheral surface of the pipe 7 via the annular projections 12 and 14.
【0024】 締め付けハウジング10は、予めガスケ
ット8に嵌装しておくかまたはガスケット8をパイプ
7,7と嵌合してから取り付ける。ボルト26,26を
締め込むと、ハウジング10の内周面がガスケット8の
外周面と密着し、該ガスケットを確実に保形する。管継
手1では、ハウジング10でガスケット8を締め込む量
は少なく、ボルト26,26による締め付けが直ぐに完
了するため、該継手で水洩れが発生したりガスケット8
を損傷することがない。The tightening housing 10 is attached to the gasket 8 in advance, or the gasket 8 is fitted to the pipes 7 and 7 and then attached. When the bolts 26, 26 are tightened, the inner peripheral surface of the housing 10 comes into close contact with the outer peripheral surface of the gasket 8 and the shape of the gasket is reliably retained. In the pipe joint 1, since the amount of tightening the gasket 8 in the housing 10 is small and the tightening by the bolts 26, 26 is completed immediately, water leakage may occur in the joint or the gasket 8
Will not be damaged.
【0025】 図3は管継手の変形例を示し、管継手3
0を介して、管端部にそれぞれ1列の環状溝34を設け
たパイプ32,32を接続する。環状溝34はガスケッ
ト用とハウジング用を兼ねている。FIG. 3 shows a modified example of the pipe joint 3
The pipes 32, 32 each having a row of annular grooves 34 at the ends of the pipes are connected to each other via 0. The annular groove 34 serves both as a gasket and as a housing.
【0026】 管継手30は、パイプ32の管端部の外
径よりも若干大きい内径を有する円筒形のガスケット3
6と、該ガスケットの外周面を囲撓する締め付けハウジ
ング38とを有する。ガスケット36において、その両
端部の内方膨出部40の内径は環状溝34の外径とほぼ
合致し、その縦断面の横幅は環状溝34の横幅のほぼ半
分である。一方、ハウジング38では、締め付け状態に
おいて、その両端部の内方膨出部42の内径は環状溝3
4の外径とほぼ合致し、その縦断面の横幅は環状溝34
の横幅のほぼ半分である。The pipe joint 30 is a cylindrical gasket 3 having an inner diameter slightly larger than the outer diameter of the pipe end of the pipe 32.
6 and a tightening housing 38 that surrounds and flexes the outer peripheral surface of the gasket. In the gasket 36, the inner diameters of the inner bulging portions 40 at both ends thereof substantially match the outer diameter of the annular groove 34, and the lateral width of the longitudinal section thereof is approximately half the lateral width of the annular groove 34. On the other hand, in the housing 38, in the tightened state, the inner diameters of the inward bulging portions 42 at both ends thereof are equal to the annular groove 3.
4 is almost the same as the outer diameter of the circular groove 34.
Is about half the width of.
【0027】 ハウジング38の内周面の内径は、締め
付け状態において、ガスケット外周面の外径とほぼ同一
または僅かに小さくなるように定める。また、ハウジン
グ38の縦内寸は、ガスケット36の縦外寸とほぼ合致
するように定める。ハウジング38は、予めガスケット
36に嵌装しておくかまたはガスケット36をパイプ3
2,32と嵌合してから取り付け、ボルト44を締め込
むと、ハウジング38の内周面全体がガスケット36の
外周面と密着し、該ガスケットを確実に保形する。The inner diameter of the inner peripheral surface of the housing 38 is set to be substantially the same as or slightly smaller than the outer diameter of the outer peripheral surface of the gasket in the tightened state. Further, the vertical inner dimension of the housing 38 is determined so as to substantially match the vertical outer dimension of the gasket 36. The housing 38 is preliminarily fitted to the gasket 36 or the gasket 36 is attached to the pipe 3.
When the bolts 44 are tightened by fitting after fitting with Nos. 2 and 32, the entire inner peripheral surface of the housing 38 comes into close contact with the outer peripheral surface of the gasket 36, so that the shape of the gasket is surely maintained.
【0028】 図4は管継手の別の変形例を示し、管継
手46を介して、管端部にそれぞれ環状溝突起48,5
0を設けたパイプ52,52を接続する。環状突起4
8,50はガスケット53の位置決めとハウジング54
の係止のために用いる。FIG. 4 shows another modified example of the pipe joint, in which annular groove protrusions 48 and 5 are respectively provided at the pipe end portions through the pipe joint 46.
The pipes 52 and 52 provided with 0 are connected. Annular protrusion 4
8 and 50 are the positioning of the gasket 53 and the housing 54.
Used to lock the.
【0029】 管継手46は、パイプ52の管端部の外
径よりも若干大きい内径を有する円筒形のガスケット5
3と、該ガスケットの外周面を囲撓する締め付けハウジ
ング54とを有する。ガスケット53において、その両
端部の内方膨出部56の内径はパイプ52の外径とほぼ
合致する。一方、ハウジング54では、締め付け状態に
おいて、その両端部の内方膨出部58の内径はパイプ5
2の外径とほぼ合致し、その縦断面の横幅は環状突起4
8,50間の内寸にほぼ等しくする。The pipe joint 46 is a cylindrical gasket 5 having an inner diameter slightly larger than the outer diameter of the pipe end of the pipe 52.
3 and a tightening housing 54 that surrounds and flexes the outer peripheral surface of the gasket. In the gasket 53, the inner diameters of the inner bulging portions 56 at both ends thereof substantially match the outer diameter of the pipe 52. On the other hand, in the housing 54, in the tightened state, the inner diameters of the inward bulging portions 58 at both ends thereof are equal to the pipe 5
2 is approximately the same as the outer diameter, and the lateral width of its longitudinal section is the annular protrusion 4.
The inner dimension between 8 and 50 is made almost equal.
【0030】 ハウジング54の内周面の内径は、締め
付け状態において、ガスケット外周面の外径とほぼ同一
または僅かに小さくなるように定める。ハウジング54
は、予めガスケット53に嵌装しておくかまたはガスケ
ット53をパイプ52,52と嵌合してから取り付け、
ボルト60,60を締め込むと、ハウジング54の内周
面全体がガスケット53の外周面と密着し、該ガスケッ
トを確実に保形する。The inner diameter of the inner peripheral surface of the housing 54 is determined to be substantially the same as or slightly smaller than the outer diameter of the gasket outer peripheral surface in the tightened state. Housing 54
Is fitted to the gasket 53 in advance, or fitted after fitting the gasket 53 to the pipes 52, 52,
When the bolts 60, 60 are tightened, the entire inner peripheral surface of the housing 54 comes into close contact with the outer peripheral surface of the gasket 53, and the shape of the gasket is reliably retained.
【0031】 図5に示すガスケット62は、比較的伸
縮性の小さい軟質プラスチック製であってもよく、その
内周面に嵌入パイプに対して2列の環状突起64,66
つまり総計4列の環状突起を所定間隔おいて設ける。ガ
スケット62の両端周面には、軸方向に3〜12本のス
リット68を円周方向に等間隔に形成し、各スリット6
8は環状突起64の近傍まで延びているが、環状突起6
4まで達しない長さである。The gasket 62 shown in FIG. 5 may be made of a soft plastic having a relatively small stretchability, and the inner peripheral surface of the gasket 62 has two rows of annular protrusions 64, 66 with respect to the fitting pipe.
That is, a total of four rows of annular protrusions are provided at predetermined intervals. On both circumferential surfaces of both ends of the gasket 62, 3 to 12 slits 68 are formed in the axial direction at equal intervals in the circumferential direction.
8 extends to the vicinity of the annular protrusion 64, the annular protrusion 6
The length does not reach 4.
【0032】 ガスケット62は、図1に示すようなパ
イプ7と嵌合する際に内方膨出部70を多少外方へ拡げ
ることによって入れやすく、内方膨出部70をパイプ7
の環状溝3まで押し込んで固定することが容易になる。
ガスケット62を用いると、図4に示すような2列の環
状突起間に内方膨出部70を介在させることも可能であ
る。ガスケット62は、その外周面に締め付けハウジン
グを圧着するので、スリット68を形成していてもガス
ケット62が抜けたり、該スリットから水漏れを生じる
ことはない。The gasket 62 can be easily inserted by fitting the pipe 7 as shown in FIG. 1 by expanding the inward bulging portion 70 slightly outward, and the inner bulging portion 70 can be easily inserted.
It becomes easy to push in and fix to the annular groove 3.
By using the gasket 62, it is possible to interpose the inward bulging portion 70 between the two rows of annular protrusions as shown in FIG. Since the gasket 62 is clamped to the outer peripheral surface of the gasket 62 by pressure, the gasket 62 does not come off or water leaks from the slit even if the slit 68 is formed.
【0033】 本発明で用いる締め付けハウジングは、
図6に示すように、パイプ7,7の環状溝3に嵌まるほ
ぼ半円筒形の半割り体70,70で構成してもよい。各
半割り体70には、中央に半円形側面の凹み72を設
け、該凹みにガスケット8を嵌める。各半割り体70に
は、その外周面において直線状の延長部74,74を直
径方向の外方へそれぞれ延設し、両半割り体の対向延長
部の貫通孔を通す2組のボルト−ナット76によって一
体化する。The tightening housing used in the present invention is
As shown in FIG. 6, it may be composed of substantially half-cylindrical halves 70, 70 fitted in the annular groove 3 of the pipes 7, 7. Each half body 70 is provided with a recess 72 having a semicircular side surface at the center, and the gasket 8 is fitted into the recess. In each half body 70, two sets of bolts which extend linearly on the outer peripheral surface outward in the diametrical direction and pass through the through holes of the opposite extension parts of both half bodies. It is integrated by the nut 76.
【0034】 このハウジングの取り付けには、図7に
示すように、半割り体70,70の一方の延長部74と
74にボルト−ナット76を取付け、両パイプ7に嵌装
したガスケット8を囲むように配置する。半割り体7
0,70を図7の一点鎖線のように接近させ、他方の延
長部74と74にもボルト−ナット76を取付ける。2
組のボルト−ナット76を締め込むと、半割り体70,
70によって両パイプ7の環状溝間でガスケット8を圧
着して気密性を保つ。To install this housing, as shown in FIG. 7, a bolt-nut 76 is attached to one of the extension parts 74 and 74 of the half halves 70, 70 to surround the gasket 8 fitted to both pipes 7. To arrange. Half body 7
0 and 70 are brought close to each other as shown by the alternate long and short dash line in FIG. 7, and the bolts and nuts 76 are also attached to the other extensions 74 and 74. Two
When the bolt-nut 76 of the set is tightened, the half body 70,
Gasket 8 is pressure-bonded between the annular grooves of both pipes 7 by 70 to maintain airtightness.
【0035】[0035]
【発明の効果】本発明に係る管継手は、パイプの管端部
への装着が正確且つ簡単であり、ハウジングの締め込み
力が小さくてよいので作業性および施工性が良い。この
管継手では、ガスケットおよびハウジングの両端部をパ
イプの環状溝や環状突起間に容易に嵌入でき、完全に嵌
まったことの確認も簡単である。EFFECTS OF THE INVENTION The pipe joint according to the present invention is accurate and easy to mount on the pipe end portion of the pipe, and requires only a small tightening force for the housing, resulting in good workability and workability. In this pipe joint, both ends of the gasket and the housing can be easily fitted into the annular groove or the annular protrusion of the pipe, and it is also easy to confirm that they are completely fitted.
【0036】 さらに、本発明の管継手は、円筒形のガ
スケットの構造が単純であり、全体として安価に製造で
きる。このガスケットは、その内周面の環状突起を若干
変形するだけでパイプとの嵌合が楽に行え、嵌合状態に
おいて両パイプの前端面は所定の間隙を有し、各パイプ
のたわみや伸縮を吸収できる。このガスケットは、変形
容易な環状突起を介してパイプ外周面と十分に密着し、
水洩れをほぼ完全に防ぐことができる。Further, in the pipe joint of the present invention, the structure of the cylindrical gasket is simple and can be manufactured at low cost as a whole. This gasket can be easily fitted to the pipes by only slightly deforming the annular projection on the inner peripheral surface of the gaskets. Can be absorbed. This gasket adheres sufficiently to the outer peripheral surface of the pipe through the easily deformable annular protrusion,
Water leakage can be almost completely prevented.
【図1】 本発明に係る管継手を示す概略断面図であ
る。FIG. 1 is a schematic sectional view showing a pipe joint according to the present invention.
【図2】 管継手で用いる円筒形のガスケットを一部切
り欠いて示す断面図である。FIG. 2 is a cross-sectional view showing a cylindrical gasket used in a pipe joint with a part thereof cut away.
【図3】 本発明の変形例を示す概略断面図である。FIG. 3 is a schematic sectional view showing a modified example of the present invention.
【図4】 本発明の別の変形例を示す概略断面図であ
る。FIG. 4 is a schematic sectional view showing another modification of the present invention.
【図5】 円筒形のガスケットの変形例を示す一部切り
欠き断面図である。FIG. 5 is a partially cutaway sectional view showing a modified example of a cylindrical gasket.
【図6】 締め付けハウジングの他の例を示す管継手の
側面図である。FIG. 6 is a side view of a pipe joint showing another example of the tightening housing.
【図7】 ハウジングの取り付け態様を示す側面図であ
る。FIG. 7 is a side view showing a mounting mode of the housing.
1 管継手 3,5 環状溝 7,7 パイプ 8 ガスケット 10 締め付けハウジング 12,14 環状突起 20,20 ガスケットの内方膨出部 1 Pipe fitting 3,5 annular groove 7,7 pipe 8 gasket 10 Tightening housing 12,14 Annular protrusion 20, 20 Gasket inward bulge
Claims (4)
パイプを接続する管継手であって、両パイプの管端部の
外径よりも若干大きい内径を有する比較的薄肉の円筒形
のガスケットと、該ガスケットの外周面を囲撓する締め
付けハウジングとを備え、前記ガスケットの内周面に設
けた環状突起の内径はパイプの外径よりも若干小さく、
該ガスケットの両端部における内方膨出部を両パイプ端
側の環状溝に嵌入し、且つハウジングの両端部における
内方膨出部を両パイプ内方側の環状溝に嵌入する管継
手。1. A pipe joint for connecting pipes each having two rows of annular grooves at pipe ends, and having a relatively thin cylindrical shape having an inner diameter slightly larger than the outer diameters of the pipe ends of both pipes. Of the gasket, and a tightening housing that surrounds and flexes the outer peripheral surface of the gasket, the inner diameter of the annular projection provided on the inner peripheral surface of the gasket is slightly smaller than the outer diameter of the pipe,
A pipe joint in which inner bulging portions at both ends of the gasket are fitted into annular grooves on both pipe ends, and inner bulging portions at both ends of the housing are fitted into annular grooves on both pipe inner sides.
パイプを接続する管継手であって、両パイプの管端部の
外径よりも若干大きい内径を有する比較的薄肉の円筒形
のガスケットと、該ガスケットの外周面を囲撓する締め
付けハウジングとを備え、前記ガスケットの内周面に設
けた環状突起の内径はパイプの外径よりも若干小さく、
該ガスケットおよびハウジングの両端部における内方膨
出部をそれぞれ両パイプの環状溝に嵌入する管継手。2. A pipe joint for connecting pipes each provided with a row of annular grooves at the pipe ends, and having a relatively thin cylindrical shape having an inner diameter slightly larger than the outer diameters of the pipe ends of both pipes. Of the gasket, and a tightening housing that surrounds and flexes the outer peripheral surface of the gasket, the inner diameter of the annular projection provided on the inner peripheral surface of the gasket is slightly smaller than the outer diameter of the pipe,
A pipe joint in which the inwardly bulged portions at both ends of the gasket and the housing are respectively fitted in the annular grooves of both pipes.
環状突起を設けたパイプを接続する管継手であって、両
パイプの管端部の外径よりも若干大きい内径を有する比
較的薄肉の円筒形のガスケットと、該ガスケットの外周
面を囲撓する締め付けハウジングとを備え、前記ガスケ
ットの内周面に設けた環状突起の内径はパイプの外径よ
りも若干小さく、該ガスケットの両端部における内方膨
出部を両パイプ端側の環状突起の内側壁または環状突起
間に位置させ、且つハウジングの両端部における内方膨
出部を両パイプ内方側の環状突起間に位置させる管継
手。3. A pipe joint for connecting pipes each having two or three or more rows of annular projections at the pipe ends, the pipe joints having an inner diameter slightly larger than the outer diameters of the pipe ends of both pipes. A thin cylindrical gasket and a tightening housing that flexes around the outer peripheral surface of the gasket. The inner diameter of the annular protrusion provided on the inner peripheral surface of the gasket is slightly smaller than the outer diameter of the pipe. The inward bulging portion of the pipe portion is located between the inner sidewalls or the annular protrusions of the annular projections on both pipe end sides, and the inwardly bulging portions of both ends of the housing are located between the inner pipe annular protrusions of both pipes. Pipe fittings.
パイプに対して少なくとも2列以上当接させ、該環状突
起の縦断面がほぼ直角三角形状である請求項1から3の
いずれかに記載の管継手。4. The ring-shaped projection on the inner peripheral surface of the gasket is brought into contact with each pipe in at least two rows or more, and the vertical section of the ring-shaped projection is substantially a right triangle. Pipe fittings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001194071A JP2003014172A (en) | 2001-06-27 | 2001-06-27 | Pipe joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001194071A JP2003014172A (en) | 2001-06-27 | 2001-06-27 | Pipe joint |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003014172A true JP2003014172A (en) | 2003-01-15 |
Family
ID=19032256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001194071A Pending JP2003014172A (en) | 2001-06-27 | 2001-06-27 | Pipe joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003014172A (en) |
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JP2007170660A (en) * | 2005-11-28 | 2007-07-05 | Kanaflex Corporation | Joint structure of pipe body and joint device |
JP2007278455A (en) * | 2006-04-11 | 2007-10-25 | Jfe Pipe Fitting Mfg Co Ltd | Housing type pipe joint |
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JP2007170660A (en) * | 2005-11-28 | 2007-07-05 | Kanaflex Corporation | Joint structure of pipe body and joint device |
JP2007278455A (en) * | 2006-04-11 | 2007-10-25 | Jfe Pipe Fitting Mfg Co Ltd | Housing type pipe joint |
JP2008032468A (en) * | 2006-07-27 | 2008-02-14 | Hitachi Ltd | Neutron instrumentation tube and method for connecting it |
JP4648266B2 (en) * | 2006-07-27 | 2011-03-09 | 日立Geニュークリア・エナジー株式会社 | Neutron measuring tube connection method and replacement method, and neutron measuring tube |
KR100901157B1 (en) * | 2008-04-24 | 2009-06-04 | 허일환 | Band for the pipe connecting with projecting part |
JP2011069833A (en) * | 2010-11-12 | 2011-04-07 | Hitachi-Ge Nuclear Energy Ltd | Method of connecting neutron measurement pipe, and neutron measurement pipe |
CN103422535A (en) * | 2012-05-24 | 2013-12-04 | 日本那贺株式会社 | Pipe joint |
JP2013245719A (en) * | 2012-05-24 | 2013-12-09 | Nagaoka International Corp | Pipe joint |
CN103422535B (en) * | 2012-05-24 | 2017-10-13 | 日本那贺株式会社 | Pipe joint |
JP2013174354A (en) * | 2013-04-01 | 2013-09-05 | Waterworks Technology Development Organization Co Ltd | Outer fitting member of reinforcing metal fitting |
GB2584145A (en) * | 2019-05-23 | 2020-11-25 | Subsea Tech Limited | Gasket assembly and seal carrier |
JP2022149009A (en) * | 2021-03-25 | 2022-10-06 | 日立グローバルライフソリューションズ株式会社 | Water supply hose unit and washing machine |
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