JP2003042361A - Structure of housing type pipe joint - Google Patents
Structure of housing type pipe jointInfo
- Publication number
- JP2003042361A JP2003042361A JP2001232583A JP2001232583A JP2003042361A JP 2003042361 A JP2003042361 A JP 2003042361A JP 2001232583 A JP2001232583 A JP 2001232583A JP 2001232583 A JP2001232583 A JP 2001232583A JP 2003042361 A JP2003042361 A JP 2003042361A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- pipes
- type pipe
- pipe joint
- housing type
- 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)
Abstract
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、管の先端をガスケット
に挿し込むときにガスケットに損傷を与えないようにし
たハウジング型管継手の構造に関するものである。
【０００２】
【従来の技術】従来知られているこの種のハウジング型
管継手の構造は、接続すべき両管の端部の外周面にわた
るリング状のガスケットと、このガスケットを抱持する
状態で互いに連結固定される一対のハウジングから成る
ものであって、ロールドグルーブ（転造溝）係止タイプ
の管抜止め手段を備えた形式、管の外周面にリング状の
係止部材が設けたリングタイプの管抜止め手段を備えた
形式が多用させている。
【０００３】そもそも、これ等ハウジング型管継手の構
造は、その接続すべき両管の先端部の外径とガスケット
の内径とに差のない状態あるいはガスケットの内径が僅
かに小さい状態として構成されている。
【０００４】このために、これ等ハウジング型管継手の
構造は、管の先端をガスケットに挿し込むときに、当該
挿し込まれる管の先端の縁によってガスケットの内面に
視認できない小さな挿し込み傷をつくってしまうことが
往々にあり、組立完了後の試運転、あるいは初期運転時
等でこれを検査発見されることが比較的多いのが現状で
ある。
【０００５】因に、上記のロールドグルーブ（転造溝）
係止タイプの管抜止め手段形式は、接続すべき両管に転
造溝を形成するための専用のロールドグルーブマシンが
必要であり、転造溝を配管施工の現場合わせで得ている
のが殆どである。
【０００６】
【発明が解決しようとする課題】本発明は、上記現状に
鑑み、管の先端をガスケットに挿し込むときに、当該挿
し込まれる管の先端縁によってガスケットの内面に視認
できない小さな挿し込み傷をつくらないようにするの工
夫を施した新規のハウジング型管継手の構造を提供する
ことを目的とするものである。
【０００７】
【課題を解決するための手段】上記目的を達成するため
に本発明に係るハウジング型管継手の構造は、接続すべ
き両管の端部外周面にわたるリング状のガスケットと、
このガスケットを抱持する状態で互いに連結固定される
一対のハウジングとを備えたハウジング型管継手に関
し、接続すべき両管の先端の外周面を先端縁に向うに従
って徐々に細くし且つ当該先端縁の外径をガスケットの
内径より細くして成ることを特徴とするものである。
【０００８】
【実施例】以下、本発明の実施例を図面に基づいて説明
する。すなわち、このハウジング型管継手構造は、接続
すべき両管１，２の端部外面にわたるリング状のガスケ
ット３と、このガスケット３を抱持する状態で互いに連
結固定される一対のハウジング４，５とを備えている。
【０００９】具体的には、上記ガスケット３は、断面が
台形状であって、その内面部の中央部には奥拡がりの溝
６が形成されており、この溝６の両側のリップ部分７に
流体圧がかゝることで、当該リップ部分７が管１、２の
外面に密接されるもので、所謂セルフシールタイプに構
成されている。
【００１０】一方、上記ハウジング４，５のそれぞれ
は、その内面が接続すべき管１、２の外面に接する幅狭
の半円筒状部材８の両外側にボルト９の挿通孔１０が形
成されたフランジ１１を連設すると共にこの半円筒状部
材８の幅方向中央部に、ガスケット３を上記リップ部分
７がやゝ突出する状態に嵌入する凹溝１３を設けて構成
してある。
【００１１】そして、上記凹溝１３にガスケット３を嵌
合抱持させるように、上記一対のハウジング４，５の両
端のフランジ１１を互いに重ね合わせると共にこのハウ
ジング４，５をボルト９で連結固定するようにする。
【００１２】更に、接続すべき両管１，２の先端の外周
面を先端縁１４に向うに従って徐々に細くし且つ当該先
端縁１４の外径をガスケット３の内径より細くしたもの
である。
【００１３】尚、図１および図２に示す第１実施例は、
専用のロールドグルーブマシン（図示せず）による転造
溝１６をもつ接続すべき両管１，２の先端の外周面１５
を、先端縁１４に向うに従って徐々に細くしたものであ
り、また図３に示す第２実施例は、管の外周面にリング
状の係止部材１７が止着されたリングタイプの管抜止め
手段をもつ接続すべき両管１，２の先端の外周面１５
を、先端縁１４に向うに従って徐々に細くしたものであ
り、また図４に示す第３実施例は、専用のロールドグル
ーブマシン（図示せず）による転造溝１６をもつ接続す
べき両管１，２の先端縁を面取りして外周面１５を徐々
に細くしたものである。
【００１４】通常、接続すべき両管の先端の外周面を先
端縁に向うに従って徐々に細くする作業は、例えばロー
ルドグルーブマシン（図示せず）に、転造溝形成ジグと
並べて絞り用ジグもしくは切削ジグをセットして、転造
溝の形成工程と一緒に一挙になすことができる。
【００１５】
【発明の効果】本発明に係るハウジング型管継手の構造
は、上記のように接続すべき両管の端部外周面にわたる
リング状のガスケットと、このガスケットを抱持する状
態で互いに連結固定される一対のハウジングとを備えた
ハウジング型管継手であって、接続すべき両管の先端の
外周面を先端縁に向うに従って徐々に細くし且つ当該先
端縁の外径をガスケットの内径より細くして成るので、
管の先端をガスケットに挿し込むときには、当該挿し込
まれる管の先端の縁によってガスケットの内面に視認で
きないような小さな挿し込み傷をつくってしまうことが
なく、組立完了後の試運転、あるいは初期運転時等でこ
れを検査発見されることがなく（尚、実験では検査発見
されることが稀にあったがいずれも挿し込む操作以外の
原因もしくは操作ミスによるものであった。）、所期の
目的を完全に達成する著効を有するものであリ、しか
も、接続すべき両管の先端の外周面を先端縁に向うに従
って徐々に細くする作業は、例えばロールドグルーブマ
シン（図示せず）による転造溝の形成工程と一緒に一挙
に効率よくなすことができて作業性もよく、その効果は
著大である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing type pipe joint structure in which a gasket is not damaged when a pipe end is inserted into the gasket. . 2. Description of the Related Art A known type of a housing type pipe joint has a ring-shaped gasket extending over the outer peripheral surfaces of ends of both pipes to be connected, and a gasket holding the gasket. It is composed of a pair of housings that are connected and fixed to each other, and is provided with a rolled groove (rolling groove) locking type pipe retaining means. A ring-shaped locking member is provided on the outer peripheral surface of the pipe. A type provided with a ring type pipe retaining means is frequently used. [0003] In the first place, the structure of these housing type pipe joints is configured such that there is no difference between the outer diameters of the distal ends of the two pipes to be connected and the inner diameter of the gasket or the inner diameter of the gasket is slightly smaller. I have. [0004] For this reason, the structure of these housing type pipe joints causes a small insertion flaw that cannot be visually recognized on the inner surface of the gasket due to the edge of the inserted pipe at the time of inserting the tip of the pipe into the gasket. At present, it is relatively common to inspect and find this during trial operation after completion of assembly or during initial operation. [0005] The above-mentioned rolled groove (rolled groove)
The locking type pipe retaining means requires a dedicated rolled groove machine to form rolling grooves in both pipes to be connected, and the rolling grooves are obtained at the site of piping construction Is mostly. SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention has been made in consideration of the above-mentioned circumstances, and when inserting the tip of a pipe into a gasket, the small insertion which cannot be visually recognized on the inner surface of the gasket by the tip edge of the inserted pipe. It is an object of the present invention to provide a new housing-type pipe joint structure that is designed to prevent scratches. [0007] To achieve the above object, a housing type pipe joint structure according to the present invention comprises a ring-shaped gasket extending over the outer peripheral surfaces of the ends of both pipes to be connected.
A housing type pipe joint comprising a pair of housings which are connected and fixed to each other while holding the gasket, wherein the outer peripheral surfaces of the distal ends of both pipes to be connected gradually become thinner toward the distal end edges, and the distal end edges are gradually reduced. Is characterized in that its outer diameter is made smaller than the inner diameter of the gasket. An embodiment of the present invention will be described below with reference to the drawings. That is, the housing-type pipe joint structure includes a ring-shaped gasket 3 extending over the outer surfaces of the ends of both pipes 1 and 2 to be connected, and a pair of housings 4 and 5 connected and fixed to each other while holding the gasket 3. And More specifically, the gasket 3 has a trapezoidal cross-section, and has a groove 6 extending deep in the center of the inner surface thereof. When the fluid pressure is applied, the lip portion 7 comes into close contact with the outer surfaces of the pipes 1 and 2, and is configured as a so-called self-sealing type. On the other hand, each of the housings 4 and 5 has through holes 10 for bolts 9 formed on both outer sides of a narrow semi-cylindrical member 8 whose inner surfaces are in contact with the outer surfaces of the tubes 1 and 2 to be connected. The semi-cylindrical member 8 is provided with a concave groove 13 in which the gasket 3 is fitted so that the lip portion 7 protrudes slightly. Then, the flanges 11 at both ends of the pair of housings 4 and 5 are overlapped with each other so as to fit and hold the gasket 3 in the concave groove 13 and the housings 4 and 5 are connected and fixed by bolts 9. To Further, the outer peripheral surfaces of the distal ends of the two pipes 1 and 2 to be connected are gradually made thinner toward the distal end edge 14, and the outer diameter of the distal end edge 14 is made smaller than the inner diameter of the gasket 3. The first embodiment shown in FIG. 1 and FIG.
Outer peripheral surface 15 at the end of both pipes 1 and 2 to be connected, having rolling grooves 16 by a dedicated rolled groove machine (not shown)
The second embodiment shown in FIG. 3 is a ring type pipe retaining member in which a ring-shaped locking member 17 is fixed to the outer peripheral surface of the pipe. Outer peripheral surface 15 at the tip of both pipes 1 and 2 to be connected
The third embodiment shown in FIG. 4 is a pipe having a rolling groove 16 formed by a dedicated rolled groove machine (not shown). The outer peripheral surface 15 is gradually thinned by chamfering the leading edges of the first and second parts. Usually, the work of gradually narrowing the outer peripheral surfaces of the distal ends of the two pipes to be connected toward the distal end edges is performed, for example, by using a rolled groove machine (not shown) along with a rolling groove forming jig and a drawing jig. Alternatively, a cutting jig can be set and the rolled groove can be formed at once with the forming step. The structure of the housing type pipe joint according to the present invention is such that a ring-shaped gasket extending over the outer peripheral surfaces of the ends of the two pipes to be connected as described above, and a gasket holding the gasket are held together. A housing type pipe joint comprising a pair of housings connected and fixed, wherein the outer peripheral surfaces of the distal ends of both pipes to be connected gradually become thinner toward the distal edges, and the outer diameter of the distal edges is changed to the inner diameter of the gasket. Because it becomes thinner,
When inserting the tip of the pipe into the gasket, the edge of the tip of the inserted pipe does not create a small insertion flaw that cannot be visually recognized on the inner surface of the gasket. Inspection was not found in such a manner as described above (inspection was rarely found by inspection, but all were due to a cause other than the insertion operation or an operation error), and the intended purpose was obtained. The operation of making the outer peripheral surfaces of the distal ends of both pipes to be connected gradually thinner toward the distal edge is performed by, for example, a rolled groove machine (not shown). The process can be efficiently performed at once with the process of forming the rolled groove, and the workability is good. The effect is remarkable.
【図面の簡単な説明】
【図１】本発明の第１実施例を示す分解斜視図である。
【図２】同じく要部の拡大断面図である。
【図３】本発明の第２実施例を示す要部の拡大断面図で
ある。
【図４】本発明の第３実施例を示す要部の拡大断面図で
ある。
【符号の説明】
１ 接続すべき両管
２ 接続すべき両管
３ ガスケット
４ ハウジング
５ ハウジング
６ 溝
８ 半円筒状部材
９ ボルト
１０ 挿通孔
１１ フランジ
１３ 凹溝
１４ 先端縁
１５ 外周面
１６ 転造溝
１７ 係止部材BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a first embodiment of the present invention. FIG. 2 is an enlarged sectional view of a main part of the same. FIG. 3 is an enlarged sectional view of a main part showing a second embodiment of the present invention. FIG. 4 is an enlarged sectional view of a main part showing a third embodiment of the present invention. [Description of Signs] 1 Both pipes to be connected 2 Both pipes to be connected 3 Gasket 4 Housing 5 Housing 6 Groove 8 Semi-cylindrical member 9 Bolt 10 Insertion hole 11 Flange 13 Concave groove 14 Front edge 15 Outer peripheral surface 16 Rolling groove 17 Locking member
Claims (1)
ング状のガスケットと、このガスケットを抱持する状態
で互いに連結固定される一対のハウジングとを備えたハ
ウジング型管継手に関し、接続すべき両管の先端部の外
周面を先端縁に向うに従って徐々に細くし且つ当該先端
縁の外径をガスケットの内径より細くして成ることを特
徴とするハウジング型管継手の構造。Claims: 1. A housing type comprising: a ring-shaped gasket extending over the outer peripheral surfaces of the ends of both pipes to be connected; and a pair of housings which are connected and fixed to each other while holding the gasket. A housing type pipe joint characterized in that an outer peripheral surface of a distal end portion of both pipes to be connected is gradually narrowed toward a distal end edge, and an outer diameter of the distal end edge is smaller than an inner diameter of a gasket. Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001232583A JP2003042361A (en) | 2001-07-31 | 2001-07-31 | Structure of housing type pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001232583A JP2003042361A (en) | 2001-07-31 | 2001-07-31 | Structure of housing type pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003042361A true JP2003042361A (en) | 2003-02-13 |
Family
ID=19064484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001232583A Pending JP2003042361A (en) | 2001-07-31 | 2001-07-31 | Structure of housing type pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003042361A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132626A (en) * | 2004-11-04 | 2006-05-25 | Riken Corp | Housing type pipe joint, pipe body machining device and pipe body machining method |
| JP2009274128A (en) * | 2008-05-19 | 2009-11-26 | Nisshin Steel Co Ltd | Method and apparatus for working pipe end joint of fluid feed pipe |
| JP2018179054A (en) * | 2017-04-06 | 2018-11-15 | 株式会社リケンＣｋｊｖ | Connection structure of pipe material using housing pipe joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538036U (en) * | 1978-09-04 | 1980-03-11 | ||
| JPS58158889U (en) * | 1982-04-19 | 1983-10-22 | 横須賀市 | pipe joint |
| JPS647991U (en) * | 1987-07-03 | 1989-01-17 | ||
| JPH11320440A (en) * | 1998-05-15 | 1999-11-24 | Toyota Motor Corp | Cylinder seal, cylinder seal having seal ring, and assembly method for the seal ring |
-
2001
- 2001-07-31 JP JP2001232583A patent/JP2003042361A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538036U (en) * | 1978-09-04 | 1980-03-11 | ||
| JPS58158889U (en) * | 1982-04-19 | 1983-10-22 | 横須賀市 | pipe joint |
| JPS647991U (en) * | 1987-07-03 | 1989-01-17 | ||
| JPH11320440A (en) * | 1998-05-15 | 1999-11-24 | Toyota Motor Corp | Cylinder seal, cylinder seal having seal ring, and assembly method for the seal ring |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132626A (en) * | 2004-11-04 | 2006-05-25 | Riken Corp | Housing type pipe joint, pipe body machining device and pipe body machining method |
| JP2009274128A (en) * | 2008-05-19 | 2009-11-26 | Nisshin Steel Co Ltd | Method and apparatus for working pipe end joint of fluid feed pipe |
| JP2018179054A (en) * | 2017-04-06 | 2018-11-15 | 株式会社リケンＣｋｊｖ | Connection structure of pipe material using housing pipe joint |
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