JPS5841429Y2 - Disengagement prevention pipe fitting - Google Patents
Disengagement prevention pipe fittingInfo
- Publication number
- JPS5841429Y2 JPS5841429Y2 JP1978179614U JP17961478U JPS5841429Y2 JP S5841429 Y2 JPS5841429 Y2 JP S5841429Y2 JP 1978179614 U JP1978179614 U JP 1978179614U JP 17961478 U JP17961478 U JP 17961478U JP S5841429 Y2 JPS5841429 Y2 JP S5841429Y2
- Authority
- JP
- Japan
- Prior art keywords
- socket
- lock ring
- protrusion
- sealing material
- ring
- 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.)
- Expired
Links
Landscapes
- Joints With Sleeves (AREA)
Description
【考案の詳細な説明】 本考案は離脱防止機能を有する管継手に関する。[Detailed explanation of the idea] The present invention relates to a pipe joint with a detachment prevention function.
従来、離脱防止管継手として、挿口外面の突部と係合す
るロックリングを受口内面の環状溝に嵌着したものが提
案されている。BACKGROUND ART Conventionally, a separation prevention pipe joint has been proposed in which a lock ring that engages with a protrusion on the outer surface of the socket is fitted into an annular groove on the inner surface of the socket.
上記ロックリングは周方向一つ割りに形成され、その拡
径付勢力で受口の環状溝内面に圧接する。The lock ring is formed into one piece in the circumferential direction, and is pressed against the inner surface of the annular groove of the socket by its diameter expansion biasing force.
ところが、継手接合にあたり、上記ロックリングは適宜
の器具で縮径させて受口に挿入しなければならず、接合
作業が煩雑であるという問題がある。However, when joining the joint, the lock ring must be reduced in diameter with an appropriate tool and inserted into the socket, which poses a problem in that the joining work is complicated.
例えば実開昭４９−６４８１３号公報に記載の管継手構
造の如く、管受口と管挿口とを嵌合した後、一つ割りロ
ックリングを弾性に抗して収縮させた状態で管受口内に
押し入れ、該一つ割りロックリングを弾性により凹溝に
嵌合させるものがある。For example, as in the pipe joint structure described in Japanese Utility Model Application Publication No. 49-64813, after the pipe socket and the pipe insertion port are fitted together, the split lock ring is contracted against the elasticity of the pipe joint. Some lock rings are pushed into the mouth and the split lock ring is elastically fitted into the groove.
このものでは、ロックリングを縮径させて管受口に挿入
させること以外に、このロックリングはシール材の圧着
にも兼ねるので、押輪によるシール材の圧締力をも確実
に受は止めるものでなくてはならない。In this product, in addition to reducing the diameter of the lock ring and inserting it into the pipe socket, this lock ring also serves as a crimp for the sealing material, so it securely stops the pressing force of the sealing material by the press ring. Must be.
本考案の目的は、ロックリングの構造をロックリングの
管受口への挿入に適したものに構成して簡単な作業でロ
ックリングの装着が行なえるようにするとともに、シー
ル材を受口内面の管軸方向中間位置に突設された環状の
バックアップ突起の奥側に隣接して配置するようにして
、ロックリングを利用したシール材圧締作用をなくする
ことにより、前記ロックリング構造の採用を可能にし、
しかも前記バックアップ突起の奥側に配置されるシール
材の設置状態をも簡単に確認可能にしたものである。The purpose of this invention is to configure the structure of the lock ring to be suitable for inserting the lock ring into the pipe socket, so that the lock ring can be installed easily, and to apply a sealing material to the inside of the socket. The lock ring structure is adopted by disposing the ring-shaped backup projection protruding at an intermediate position in the pipe axis direction, adjacent to the back side, and eliminating the sealing material pressing action using the lock ring. enable
Moreover, it is possible to easily check the installation state of the sealing material placed on the back side of the backup protrusion.
さらに、本考案の目的は、前記バックアップ突起を利用
して特に軟弱地盤に対して有効であるとともに、地震時
繰り返しで管が伸縮しても有効な離脱防止管継手であり
、シール材のシール効果をいかなる時にも確保しようと
するものである。Furthermore, the purpose of the present invention is to provide a pipe joint that utilizes the backup protrusion to prevent separation, which is particularly effective on soft ground, and which is also effective even when the pipe expands and contracts repeatedly during earthquakes, and which has the sealing effect of the sealing material. The aim is to ensure the following at all times.
本考案は、上記目的を達成するために、受口開口端より
受口奥側の受口内面と挿口外面との間にシール材を介装
し、該シール材と受口開口側で隣接する受口内面にシー
ル材のバックアップ突起を設け、該バックアップ突起よ
り受口開口側に位置して受口内面に設けた環状溝に周方
向一つ割りで拡径付勢力を有するとともに、受口開口部
内面と挿口外面との間隔より肉厚の小さい第１のロック
リングを嵌着し、該第１のロックリングと前記バックア
ップ突起との間で挿口外面に環状の突部を設け、前記第
１のロックリングと前記突部との間に位置してこれらに
係合可能な周方向一つ割りの第２のロックリングを挿口
に外嵌して設け、前記第１のロックリングと前記第２の
ロックリングとの互いの係合面を係合時に第２のロック
リングに縮径力を作用させるテーパ面に形成するととも
に、受口開口端に形成し７たテーパ面に対応する勾配を
もったテーパ面を、第１のロックリング挿入時に前記第
１のロックリングの前記受口開口端デーパ面に当接する
外周縁に形成し、さらに、挿口は前記突部がバックアッ
プ突起および第２のロックリングを介して第１のロック
リングに係合するまでの範囲で管軸方向相対移動を許さ
れるように構成したものである。In order to achieve the above object, the present invention provides a sealing material between the inner surface of the socket and the outer surface of the socket on the back side of the socket from the opening end of the socket, and adjoins the sealing material on the opening side of the socket. A backup protrusion of a sealing material is provided on the inner surface of the socket, and an annular groove provided on the inner surface of the socket located on the side of the opening of the socket from the backup projection has a biasing force for expanding the diameter in the circumferential direction. fitting a first lock ring having a thickness smaller than the distance between the inner surface of the opening and the outer surface of the socket, and providing an annular protrusion on the outer surface of the socket between the first lock ring and the backup protrusion; A second lock ring split in the circumferential direction and capable of being located between the first lock ring and the protrusion and engaging with them is provided by being fitted externally into the insertion opening, and the first lock ring The mutual engagement surfaces of the lock ring and the second lock ring are formed into tapered surfaces that apply a diameter reducing force to the second lock ring when engaged, and correspond to the tapered surface formed at the opening end of the socket. A tapered surface having a slope such as The structure is such that relative movement in the tube axis direction is allowed within a range up to engagement with the first lock ring via the second lock ring.
以下本考案の一実施例を図面に基づいて説明する。An embodiment of the present invention will be described below based on the drawings.
１は受口、２は挿口である。1 is the socket and 2 is the socket.
受口１の内面の管軸方向中間位置に突設された環状のバ
ックアップ突起３の奥側に隣接してシール材配置面４が
設けられ、シール材配置面４と挿口２の外面との間にゴ
ム製の環状のシール材５が配置されている。A sealing material placement surface 4 is provided adjacent to the back side of an annular backup protrusion 3 protruding from the inner surface of the socket 1 at an intermediate position in the tube axis direction, and the sealing material placement surface 4 and the outer surface of the insertion port 2 are connected to each other. A rubber annular sealing material 5 is arranged between them.
シール材配置面４にはシール材５の外面の凹部と係合す
る係合突部６が設けられている。The sealing material placement surface 4 is provided with an engaging protrusion 6 that engages with a recess on the outer surface of the sealing material 5.
係合突部６は挿口２の受口１への挿入時にシール材５が
引きずられることを防止するものである。The engagement protrusion 6 prevents the sealing material 5 from being dragged when the insertion port 2 is inserted into the socket 1.
受口１の開口部近傍の内面に環状溝７が設けられ、ロッ
クリング８が環状溝７に嵌合している。An annular groove 7 is provided on the inner surface of the socket 1 near the opening, and a lock ring 8 is fitted into the annular groove 7.
ロックリング８は周方向一つ割りで拡径付勢力を有する
ものである。The lock ring 8 is divided into parts in the circumferential direction and has a biasing force for expanding the diameter.
環状溝７とバックアップ突起３との間に位置して挿口２
の外面に環状の突部９が設けられ、突部９とロックリン
グ８とに係合可能なロックリング１０が挿口２に外嵌し
ている。A socket 2 is located between the annular groove 7 and the backup protrusion 3.
An annular protrusion 9 is provided on the outer surface of the socket 2 , and a lock ring 10 that can engage with the protrusion 9 and the lock ring 8 is fitted onto the socket 2 .
挿口２のロックリング１０は周方向一つ割りで縮径付勢
力を有するものであり、挿口２の外面に圧接している。The lock ring 10 of the socket 2 is divided into pieces in the circumferential direction and has a force for reducing the diameter, and is pressed against the outer surface of the socket 2.
受口１のロックリング８は受口奥側の側面の外周縁およ
び内周縁にテーパ面８ａ、８ｂを有し、外周縁のテーパ
面８ａと一致する勾配のテーパ面１１が受口１の開口部
内周縁に設けられている。The lock ring 8 of the socket 1 has tapered surfaces 8a and 8b on the outer and inner peripheral edges of the side surface on the back side of the socket. It is provided on the inner periphery of the part.
また、ロックリング８の内周縁のテーパ面８ｂと一致す
る勾配のテーパ面１０ａが挿口２のロックリング１０の
外周縁に形成されている。Further, a tapered surface 10a having a slope that matches the tapered surface 8b of the inner peripheral edge of the lock ring 8 is formed on the outer peripheral edge of the lock ring 10 of the socket 2.
両口ツクリング８，１０の肉厚Ｈ１，Ｈ２は受口１の開
口部内面と挿口２の外面との間の間隙δより小さく、両
口ツクリング８，１０は上記間隙δから挿入可能である
。The wall thicknesses H1 and H2 of the double-end snap rings 8 and 10 are smaller than the gap δ between the inner surface of the opening of the socket 1 and the outer surface of the insertion port 2, and the double-end pull rings 8 and 10 can be inserted through the gap δ. .
このような構成であると、受口１の環状溝７に嵌着した
ロックリング８と挿口２の突部９とがロックリング１０
を介して係合することにより、受口１と挿口２との離脱
阻止がなされる。With such a configuration, the lock ring 8 fitted into the annular groove 7 of the socket 1 and the protrusion 9 of the socket 2 are connected to the lock ring 10.
By engaging through the , separation of the receptacle 1 and the receptacle 2 is prevented.
また前記突部９がロックリング１０を介して受口１のロ
ックリング８と係合し、さらに、突部９がバックアップ
突起３に係合するまでの範囲で受口１と挿口２との管軸
方向相対移動が許され、軟弱地盤に対して有効であると
ともに、地震時繰り返しで管が伸縮しても有効な離脱防
止構造となる。Further, the projection 9 engages with the lock ring 8 of the socket 1 via the lock ring 10, and furthermore, the connection between the socket 1 and the socket 2 is within the range until the projection 9 engages with the backup projection 3. Relative movement in the pipe axial direction is allowed, making it effective against soft ground, as well as providing an effective separation prevention structure even if the pipe expands and contracts repeatedly during earthquakes.
また、両口ツクリング８，１０に互いに係合するテーパ
面８ｂ 、１０ａが設けであるので、受口１と挿口２と
の間の離脱力によって両口ツクリング８，１０はそれぞ
れ環状溝７の底面と挿口２の外面とに押し付けられ、そ
のためロックリング８が環状溝７から不測に外れること
がなく、確実な離脱阻止がなされる。In addition, since the double-ended snap rings 8, 10 are provided with tapered surfaces 8b, 10a that engage with each other, the double-ended snap rings 8, 10 are moved into the annular groove 7 by the detachment force between the socket 1 and the socket 2, respectively. It is pressed against the bottom surface and the outer surface of the socket 2, so that the lock ring 8 does not accidentally come off from the annular groove 7, and is reliably prevented from coming off.
継手接合作業について説明すると、受口１のシール材配
置面ぺにシール材５を圧接状態に装着し、かつ挿口２の
外面に両口ツクリング８，１０を預けた状態で挿口２を
受口１に挿入する。To explain the joint joining work, the sealing material 5 is attached to the sealing material placement surface of the socket 1 in a press-contact state, and the socket 2 is received with the double-ended snap rings 8 and 10 resting on the outer surface of the socket 2. Insert into mouth 1.
挿口２が適正位置まで挿入されると、シール材５が挿口
２の挿入によって移動していないか否かを確認する。When the socket 2 is inserted to the proper position, it is confirmed whether the sealing material 5 has not moved due to the insertion of the socket 2.
すなわち、受口１と挿口２との間の間隙にゲージを挿入
し、このゲージをシール材５に接当してシール材５が適
正位置に位置しているか否かを確認する。That is, a gauge is inserted into the gap between the socket 1 and the socket 2, and this gauge is brought into contact with the sealing material 5 to check whether the sealing material 5 is located at the proper position.
このとき、両口ツクリング８，１０は受口１の開口部よ
り外方に預けであるので、田ンクリング８，１０が邪魔
となることなくゲージの挿入を行なうことができる。At this time, since the double-end tuck rings 8 and 10 are placed outward from the opening of the socket 1, the gauge can be inserted without the tuck rings 8 and 10 getting in the way.
なお、挿口２のロックリング１０を設けずに挿口２の突
部９と受口１のロックリング８とが直接に係合するよう
に構成してもよいが、本実施例のようにロックリング１
０を介して係合するように構成した場合、挿口２の突部
９の高さＨ３を低く形成できる。Note that the lock ring 10 of the socket 2 may be omitted and the protrusion 9 of the socket 2 and the lock ring 8 of the socket 1 may be directly engaged with each other. lock ring 1
0, the height H3 of the protrusion 9 of the socket 2 can be made low.
そのため、突部９が存していてもゲージの挿入が容易に
行なえる。Therefore, even if the protrusion 9 exists, the gauge can be easily inserted.
なお、ゲージの代りにテレビカメラを用いることもでき
る。Note that a television camera may be used instead of the gauge.
シール材５の設置状態の確認が完了すると、挿口２のロ
ックリング１０を所定位置までスライドさせ、ついで受
口１の環状溝７ヘロツクリング８を嵌着する。When the installation state of the sealing material 5 has been confirmed, the lock ring 10 of the socket 2 is slid to a predetermined position, and then the lock ring 8 of the annular groove 7 of the socket 1 is fitted.
この嵌着にあたっては、ロックリング８の外周縁および
受口１の開口部の内周縁にテーパ面８ａ、１１が設けら
れているため、ロックリング８を第２図のように受口１
の開口部に配置しハンマ等で打撃を与えることにより、
ロックリング８は縮径にして簡単に受口１内に挿入され
る。For this fitting, since tapered surfaces 8a and 11 are provided on the outer peripheral edge of the lock ring 8 and the inner peripheral edge of the opening of the socket 1, the lock ring 8 is inserted into the socket as shown in FIG.
By placing it in the opening of and hitting it with a hammer etc.
The lock ring 8 is reduced in diameter and easily inserted into the socket 1.
以上本考案によれば、受口開口端に形成したテーパ面に
対応する勾配をもったテーパ面を、第１のロックリング
挿入時に前記第１のロックリングの前記受口開口端テー
パ面に当接する外周縁に形成したので、上記第１のロッ
クリングは特別な器具で縮径させなくても、ハンマ等で
打撃を与えるだけで受口内に挿入でき、接合作業は簡単
になる。As described above, according to the present invention, a tapered surface having a slope corresponding to the tapered surface formed at the opening end of the socket is brought into contact with the tapered surface of the opening end of the socket of the first lock ring when inserting the first lock ring. Since the first lock ring is formed on the contacting outer peripheral edge, the first lock ring can be inserted into the receptacle simply by hitting it with a hammer or the like, without having to reduce the diameter with a special tool, making the joining work simple.
また第１のロックリングは従来のようにシール材の圧締
力を受は止める必要がないので、その外周縁にテーパ面
を形成した本考案の如き構造であっても十分に使用でき
るものであり、しかも、第１のロックリングと第２のロ
ックリングが係合した時には、互いのテーパ面により第
２のロックリングに縮径力が作用し、たとえ第２のロッ
クリングに係合する突部の高さが小さくても、第２のロ
ックリングがこの突部から外れる恐れはなく、大きな離
脱力に対しても確実な離脱阻止がなされるとともに、突
部の高さを小さくできることから、バックアップ突起の
奥側に位置するシール材の設置状態の確認を容易にでき
るようにすることも可能である。Furthermore, since the first lock ring does not need to receive or stop the clamping force of the sealing material as in the conventional case, it can be used satisfactorily even if the structure of the present invention has a tapered surface formed on its outer periphery. Moreover, when the first lock ring and the second lock ring are engaged, a diameter reducing force acts on the second lock ring due to their mutual tapered surfaces, and even if the protrusion that engages with the second lock ring Even if the height of the protrusion is small, there is no fear that the second lock ring will come off the protrusion, and even a large detachment force can be reliably prevented from detaching, and the height of the protrusion can be made small. It is also possible to easily check the installation state of the sealing material located on the back side of the backup protrusion.
さらに、挿口は突部がバックアップ突起および第２のロ
ックリングを介して第１のロックリングに係合するまで
の範囲で管軸方向相対移動を許されるので、軟弱地盤に
対して有効であるとともに、地震時繰り返しで管が伸縮
しても有効な離脱防止管継手であり、突部はシール材を
直接に押すことがないので、シール材のシール効果はい
かなる時にでも確保される。Furthermore, the insertion port is allowed to move relative to the tube axis within a range until the protrusion engages with the first lock ring via the backup protrusion and the second lock ring, which is effective against soft ground. In addition, it is a separation-prevention pipe joint that is effective even when the pipe expands and contracts during repeated earthquakes, and the protrusion does not directly press the sealing material, so the sealing effect of the sealing material is ensured at any time.
図面は本考案の一実施例を示し、第１図は断面図、第２
図は要部の拡大断面図である。
１・・・受口、２・・・挿口、３・・・バックアップ突
起、５・・・シール材、７・・・環状溝、８・・・ロッ
クリング、８ａ、８ｂ・・・テーパ面、９・・・突部、
１０・・・ロックリング、１０ａ・・・テーパ面、１１
・・・受口開口端テーパ面。The drawings show one embodiment of the present invention, with FIG. 1 being a sectional view and FIG.
The figure is an enlarged sectional view of the main part. DESCRIPTION OF SYMBOLS 1... Socket, 2... Socket, 3... Backup protrusion, 5... Seal material, 7... Annular groove, 8... Lock ring, 8a, 8b... Tapered surface , 9... protrusion,
10...Lock ring, 10a...Tapered surface, 11
...Tapered surface at the opening end of the socket.
Claims (1)
シール材を介装し、該シール材と受口開口側で隣接する
受口内面にシール材のバックアップ突起を設け、該バッ
クアップ突起より受口開口側に位置して受口内面に設け
た環状溝に周方向一つ割りで拡径付勢力を有するととも
に、受口開口部内面と挿口外面との間隔より肉厚の小さ
い第１のロックリングを嵌着し、該第１のロックリング
と前記バックアップ突起との間で挿口外面に環状の突部
を設け、前記第１のロックリングと前記突部との間に位
置してこれらに係合可能な周方向一つ割りの第２のロッ
クリングを挿口に外嵌して設け、前記第１のロックリン
グと前記第２のロックリングとの互いの係合面を、係合
時に第２のロックリングに縮径力を作用させるテーパ面
に形成するとともに、受口開口端に形成したテーパ面に
対応する勾配をもったテーパ面を、第１のロックリング
挿入時に前記第１のロックリングの前記受口開口端テー
パ面に当接する外周縁に形成し、さらに、挿口は前記突
部がバックアップ突起および第２のロックリングを介し
て第１のロックリングに係合するまでの範囲で管軸方向
相対移動を許されるようにしたことを特徴とする離脱防
止管継手。A sealing material is interposed between the inner surface of the socket and the outer surface of the socket on the back side of the socket from the opening end of the socket, and a backup protrusion of the sealing material is provided on the inner surface of the socket adjacent to the sealing material on the socket opening side. , the annular groove provided on the inner surface of the socket located on the side of the socket opening from the backup protrusion has a biasing force for expanding the diameter by dividing into one part in the circumferential direction, and the thickness is increased from the distance between the inner surface of the socket opening and the outer surface of the socket. A first lock ring with a small thickness is fitted, an annular protrusion is provided on the outer surface of the insertion port between the first lock ring and the backup protrusion, and a ring-shaped protrusion is provided between the first lock ring and the protrusion. A second lock ring split in the circumferential direction, which is located between them and can be engaged with them, is provided by being fitted onto the insertion opening, and the first lock ring and the second lock ring are engaged with each other. The mating surface is formed into a tapered surface that applies a diameter reducing force to the second lock ring when engaged, and a tapered surface with a slope corresponding to the tapered surface formed at the opening end of the socket is formed on the first lock ring. The socket is formed on an outer peripheral edge that comes into contact with the tapered surface of the socket opening end of the first lock ring when the ring is inserted; A detachment prevention pipe joint characterized in that relative movement in the pipe axis direction is allowed within a range until it engages with a ring.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978179614U JPS5841429Y2 (en) | 1978-12-22 | 1978-12-22 | Disengagement prevention pipe fitting |
| GB7938166A GB2038435B (en) | 1978-12-22 | 1979-11-05 | Slipping off preventing pipe joint |
| US06/093,613 US4296953A (en) | 1978-12-22 | 1979-11-13 | Slipping-off preventing pipe joint |
| DE2947639A DE2947639C2 (en) | 1978-12-22 | 1979-11-27 | Push-in pipe connection |
| FR7929524A FR2444877B1 (en) | 1978-12-22 | 1979-11-30 | ANTI-SNAP CONNECTION FOR PIPES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978179614U JPS5841429Y2 (en) | 1978-12-22 | 1978-12-22 | Disengagement prevention pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5593784U JPS5593784U (en) | 1980-06-28 |
| JPS5841429Y2 true JPS5841429Y2 (en) | 1983-09-19 |
Family
ID=29191211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978179614U Expired JPS5841429Y2 (en) | 1978-12-22 | 1978-12-22 | Disengagement prevention pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841429Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114719A (en) * | 1975-03-14 | 1976-10-08 | Pont A Mousson | Tension locking device of joint between two pipe elements |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521064Y2 (en) * | 1972-09-14 | 1977-01-12 |
-
1978
- 1978-12-22 JP JP1978179614U patent/JPS5841429Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114719A (en) * | 1975-03-14 | 1976-10-08 | Pont A Mousson | Tension locking device of joint between two pipe elements |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5593784U (en) | 1980-06-28 |
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