JPH05215284A - Separation preventive coupling - Google Patents
Separation preventive couplingInfo
- Publication number
- JPH05215284A JPH05215284A JP4017462A JP1746292A JPH05215284A JP H05215284 A JPH05215284 A JP H05215284A JP 4017462 A JP4017462 A JP 4017462A JP 1746292 A JP1746292 A JP 1746292A JP H05215284 A JPH05215284 A JP H05215284A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- pipe
- main body
- coupling
- separation
- 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.)
- Granted
Links
Landscapes
- Joints With Sleeves (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は離脱防止継手に関し、
特にたとえば伸縮性および屈曲性の両方を有する、離脱
防止継手に関する。BACKGROUND OF THE INVENTION This invention relates to a separation prevention joint,
In particular, it relates to a separation prevention joint having both elasticity and flexibility.
【０００２】[0002]
【従来の技術】離脱防止機構を内蔵する従来の管継手の
例が、たとえば実公平３−５１５９０号や実願平２−５
０１０８号等に開示されている。すなわち、実公平３−
５１５９０号には、継手本体の受口に挿入される棒材の
外周面に環状凹溝を形成し、環状凹溝に離脱防止リング
を装着して棒材の離脱を防止するようにした、棒材と継
手の接続構造が開示されており、実願平２−５０１０８
号には、受口にテーパ状の外面を有するアダプタを挿入
し、アダプタの外面に離脱防止リングを食い込ませてア
ダプタの離脱を防止するようにした、離脱防止機構が開
示されている。2. Description of the Related Art Examples of conventional pipe joints having a detachment prevention mechanism are, for example, Japanese Utility Model Publication No. 3-51590 and Japanese Patent Application No. 2-5.
No. 0108 and the like. That is, actual fairness 3-
In No. 51590, an annular groove is formed on the outer peripheral surface of a bar material inserted into a receiving port of a joint body, and a separation preventing ring is attached to the annular groove to prevent the bar material from separating. A connection structure of a material and a joint is disclosed.
JP-A No. 2003-242242 discloses a separation preventing mechanism in which an adapter having a tapered outer surface is inserted into a receiving port, and a separation preventing ring is bitten into the outer surface of the adapter to prevent the adapter from separating.
【０００３】[0003]
【発明が解決しようとする課題】前者では、棒材の外周
面に環状凹溝を形成するようにしているため、現場にお
いて棒材を切断して長さ調整することができず、後者で
は、受口にアダプタを挿入しなければならず、いずれに
おいても施工性の面で問題があった。また、パイプある
いはアダプタを最大に引き出した状態で、これらの外面
はゴム輪および離脱防止リングの２点で支持されるが、
ゴム輪および離脱防止リングの外面はともに継手本体に
よって支持されているため、屈曲性が悪く、地盤変動等
によって管路に加わった曲げ応力を吸収できないという
問題点もあった。さらに、前者では、管路の伸長を吸収
できないという問題点もあった。In the former case, since the annular groove is formed on the outer peripheral surface of the bar material, the bar material cannot be cut and the length can be adjusted in the field. In the latter case, An adapter had to be inserted into the socket, and there was a problem in terms of workability in both cases. Also, with the pipe or adapter pulled out to the maximum, these outer surfaces are supported by the rubber ring and the separation prevention ring,
Since the outer surfaces of the rubber ring and the detachment prevention ring are both supported by the joint body, there is a problem in that the flexibility is poor and the bending stress applied to the pipeline due to ground fluctuation or the like cannot be absorbed. Further, the former has a problem that the extension of the pipeline cannot be absorbed.
【０００４】それゆえに、この発明の主たる目的は、施
工性を向上でき、しかも充分な屈曲性および伸縮性を確
保できる、離脱防止継手を提供することである。Therefore, a main object of the present invention is to provide a separation preventing joint which can improve workability and can secure sufficient flexibility and stretchability.
【０００５】[0005]
【課題を解決するための手段】この発明は、ゴム輪受容
部と、それより奥部に奥部に向かって徐々に拡径された
テーパ部とを有する受口を含む継手本体、受口外周に形
成される球状外面、パイプの引き出し方向に向かって徐
々に縮径されたテーパ面を有する所定長さのリング収納
部と、球状外面に摺動可能に接触される球状内面を有す
る継手部とを含むハウジング、ゴム輪受容部に受容され
るゴム輪、およびリング収納部に収納される離脱防止リ
ングを備える、離脱防止継手である。DISCLOSURE OF THE INVENTION The present invention is directed to a joint body including a rubber ring receiving portion and a receiving portion having a tapered portion in the inner portion thereof, the diameter of which gradually increases toward the inner portion. A spherical outer surface, a ring accommodating portion of a predetermined length having a taper surface whose diameter is gradually reduced in the pipe withdrawing direction, and a joint portion having a spherical inner surface slidably contacting the spherical outer surface. A detachment prevention joint including a housing including a rubber ring, a rubber ring received by a rubber ring receiving portion, and a separation prevention ring housed in a ring housing portion.
【０００６】[0006]
【作用】管路が加熱される等によって伸長した場合に
は、継手本体の受口に挿入されたパイプがさらに奥部に
挿入される。管路が冷却される等によって縮んだ場合に
は、その縮み量に応じて受口からパイプが引き出され
る。パイプの引き出し時には、パイプの移動に伴って離
脱防止リングがリング収納部内を軸方向に移動される。
離脱防止リングがリング収納部のテーパ面に当接した状
態からさらにパイプを引き出そうとすると、離脱防止リ
ングがテーパ面によって縮径されてより強固にパイプ外
周面に係止され、それによってパイプの離脱が防止され
る。この状態でパイプの外面はゴム輪および離脱防止リ
ングの２点で支持されるが、それぞれの外面を支持する
継手本体およびハウジングは球状面で互いに屈曲自在に
接続されるので、管路に加わった曲げ応力を充分に吸収
できる。When the pipe is expanded by heating or the like, the pipe inserted into the receiving port of the joint body is further inserted into the inner part. When the pipe is shrunk due to cooling or the like, the pipe is pulled out from the receiving port according to the shrinkage amount. When the pipe is pulled out, the separation prevention ring is axially moved in the ring storage portion as the pipe moves.
If you try to pull out the pipe from the state where the separation prevention ring is in contact with the taper surface of the ring storage part, the separation prevention ring is reduced in diameter by the taper surface and is more firmly locked to the outer peripheral surface of the pipe. Is prevented. In this state, the outer surface of the pipe is supported by the rubber ring and the separation prevention ring at two points, but since the joint body and the housing supporting the respective outer surfaces are connected to each other by the spherical surface so as to be bendable, they joined the pipe. Can fully absorb bending stress.
【０００７】[0007]
【発明の効果】この発明によれば、従来のような環状凹
溝やアダプタが不要なので、施工性を向上できる。しか
も、充分な屈曲性および伸縮性を確保できる。この発明
の上述の目的，その他の目的，特徴および利点は、図面
を参照して行う以下の実施例の詳細な説明から一層明ら
かとなろう。According to the present invention, the annular recessed groove and the adapter as in the prior art are unnecessary, so that the workability can be improved. Moreover, sufficient flexibility and stretchability can be secured. The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.
【０００８】[0008]
【実施例】図１に示すこの実施例の離脱防止継手１０
は、パイプ１２およびその端部にやや拡径して形成され
る受口１４を有する継手本体１６を含む。受口１４の開
口端部近傍には、ゴム輪受容部１８が形成され、ゴム輪
受容部１８より奥部には、奥部に向かって徐々に拡径さ
れたテーパ部２０が形成される。そして、ゴム輪受容部
１８には、ゴム輪２２が装着される。なお、このような
継手本体１６としては、通常のゴム輪受口管継手が用い
られ得る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A separation prevention joint 10 of this embodiment shown in FIG.
Includes a pipe 12 and a joint body 16 having a socket 14 formed at its end with a slightly enlarged diameter. A rubber ring receiving portion 18 is formed in the vicinity of the opening end of the receiving port 14, and a tapered portion 20 having a diameter gradually increasing toward the back is formed in a portion deeper than the rubber ring receiving portion 18. Then, the rubber ring 22 is attached to the rubber ring receiving portion 18. Note that as such a joint body 16, a usual rubber ring socket fitting can be used.
【０００９】継手本体１６には、受口１４外周に装着さ
れるアダプタ２４を介してハウジング２６が接続され
る。アダプタ２４は、受口１４の外面に沿う内面および
球状の外面を有し、図２からよくわかるように２つ割り
状態で準備され、一方２４ａと他方２４ｂとで受口１４
を挟むようにしてその外面に接着される。A housing 26 is connected to the joint body 16 via an adapter 24 mounted on the outer periphery of the receptacle 14. The adapter 24 has an inner surface along the outer surface of the socket 14 and a spherical outer surface, and is prepared in a two-split state as can be seen clearly from FIG.
It is adhered to the outer surface so that it is sandwiched.
【００１０】ハウジング２６は、アダプタ２４の外面に
沿う球状の内面を有する継手部２８を含む。継手部２８
はアダプタ２４の外面への装着が容易なように、最大径
部において第１部分２８ａおよび第２部分２８ｂに分割
され、第１部分２８ａおよび第２部分２８ｂのそれぞれ
の外周縁には、ボルト孔３０ａおよび３０ｂを有するフ
ランジ３２ａおよび３２ｂが形成される。また、第１部
分２８ａから受口１４の先端方向に延びて筒状部３４が
形成され、筒状部３４の先端からやや縮径して所定長さ
のリング収納部３６が形成される。リング収納部３６の
先端部内周には、受口１４に挿入されるパイプ３８の引
き出し方向に向かって徐々に縮径されたテーパ面４０が
形成される。なお、筒状部３４の内面と受口１４の先端
部外面との間および継手部２８（第２部分２８ｂ）の端
部内面と受口１４のテーパ部２０外面との間には、継手
部２８がアダプタ２４の外面を摺動し得るように所定の
隙間４２および４４が設けられる。The housing 26 includes a joint portion 28 having a spherical inner surface along the outer surface of the adapter 24. Joint part 28
Is divided into a first portion 28a and a second portion 28b at the maximum diameter portion so that the adapter 24 can be easily attached to the outer surface, and bolt holes are formed at the outer peripheral edges of the first portion 28a and the second portion 28b. Flange 32a and 32b having 30a and 30b are formed. Further, a tubular portion 34 is formed extending from the first portion 28a toward the tip of the receiving port 14, and a diameter of the tubular portion 34 is slightly reduced from the tip of the tubular portion 34 to form a ring storage portion 36 of a predetermined length. A tapered surface 40 is formed on the inner circumference of the tip end of the ring storage portion 36, the diameter of which is gradually reduced in the drawing direction of the pipe 38 inserted into the receiving port 14. It should be noted that the joint portion is provided between the inner surface of the tubular portion 34 and the outer surface of the tip portion of the receiving opening 14 and between the inner surface of the end portion of the joint portion 28 (second portion 28b) and the outer surface of the tapered portion 20 of the receiving opening 14. Predetermined gaps 42 and 44 are provided so that 28 can slide on the outer surface of the adapter 24.
【００１１】そして、ハウジング２６のリング収納部３
６には、ステンレス等の金属からなる略Ｃ形状の離脱防
止リング４６が収納される。離脱防止リング４６の内周
部は、パイプ３８の挿入時にその外周面との抵抗が小さ
く、引き出し時に抵抗が大きくなるように、たとえば図
３に示すような断面略鋸歯状に形成される。図２を参照
して、ハウジング２６の装着時には、まず、第２部分２
８ｂをゴム輪受容部１８より奥部に配置し、受口１４の
外面にアダプタ２４を装着する。そして、第１部分２８
ａおよび第２部分２８ｂをアダプタ２４の外面に被せ、
フランジ３２ａと３２ｂとをボルト・ナット４８で接合
する。The ring storage portion 3 of the housing 26
A detachment prevention ring 46 made of metal such as stainless steel and having a substantially C-shape is housed in 6. The inner peripheral portion of the detachment prevention ring 46 is formed, for example, in a substantially saw-toothed cross section as shown in FIG. Referring to FIG. 2, when mounting the housing 26, first, the second portion 2
8b is arranged deeper than the rubber ring receiving portion 18, and the adapter 24 is attached to the outer surface of the receiving port 14. And the first part 28
a and the second portion 28b on the outer surface of the adapter 24,
The flanges 32a and 32b are joined with a bolt / nut 48.
【００１２】接合時には、パイプ３８が、その端部がテ
ーパ部２０の略中央に配置されるように受口１４内に挿
入される。（図１） 施工後、パイプ１２および３８を含む管路が加熱される
等によって伸長した場合には、たとえば図１中２点鎖線
で示すようにパイプ３８がさらに受口１４の奥部へ挿入
される。一方、管路が冷却される等によって縮んだ場合
には、たとえば図４に示すように、縮み量に応じてパイ
プ３８が受口１４から引き出される。パイプ３８を引き
出していくと、離脱防止リング４６がリング収納部３６
内を軸方向に移動し、パイプ３８が一定長さ引き出され
たところでテーパ面４０に当接する。そして、パイプ３
８をさらに引き出そうとすると、テーパ面４０によって
離脱防止リング４６が縮径され、その断面略鋸歯状の内
周部がパイプ３８の外周面に食い込んでいく。したがっ
て、パイプ３８はそれ以上引き出されない。At the time of joining, the pipe 38 is inserted into the receiving port 14 so that the end portion of the pipe 38 is arranged substantially at the center of the tapered portion 20. (FIG. 1) After the construction, when the pipeline including the pipes 12 and 38 is expanded due to heating or the like, the pipe 38 is further inserted into the inner part of the receiving port 14 as shown by a chain double-dashed line in FIG. To be done. On the other hand, when the pipe is contracted due to cooling or the like, the pipe 38 is pulled out from the receiving port 14 according to the contraction amount, as shown in FIG. 4, for example. When the pipe 38 is pulled out, the detachment prevention ring 46 moves into the ring storage portion 36.
The pipe 38 moves in the axial direction and comes into contact with the tapered surface 40 when the pipe 38 is pulled out by a certain length. And pipe 3
When pulling out 8 further, the diameter of the separation preventing ring 46 is reduced by the tapered surface 40, and the inner peripheral portion having a substantially sawtooth cross section bites into the outer peripheral surface of the pipe 38. Therefore, the pipe 38 can no longer be pulled out.
【００１３】また、地盤変動等によって、管路に曲げ応
力が加わった場合には、たとえば図５に示すようにハウ
ジング２６の継手部２８がアダプタ２４の外面を摺動す
ることによって管路が屈曲され、それによって、曲げ応
力が吸収される。なお、この実施例では、受口１４の外
周にアダプタ２４を装着するようにしているが、アダプ
タ２４は継手本体１６に一体に形成されてもよい。When bending stress is applied to the conduit due to ground fluctuation or the like, the conduit is bent by sliding the joint portion 28 of the housing 26 on the outer surface of the adapter 24 as shown in FIG. 5, for example. The bending stress is absorbed thereby. In addition, in this embodiment, the adapter 24 is mounted on the outer periphery of the receiving port 14, but the adapter 24 may be integrally formed with the joint body 16.
【図１】この発明の一実施例を示す図解図である。FIG. 1 is an illustrative view showing one embodiment of the present invention.
【図２】図１の実施例の分解斜視図である。2 is an exploded perspective view of the embodiment of FIG. 1. FIG.
【図３】離脱防止リングを示す断面図である。FIG. 3 is a cross-sectional view showing a separation prevention ring.
【図４】図１の実施例においてパイプを最大に引き出し
た状態を示す図解図である。FIG. 4 is an illustrative view showing a state in which the pipe is pulled out to the maximum in the embodiment of FIG.
【図５】図１の実施例において管路が屈曲した状態を示
す図解図である。5 is an illustrative view showing a state in which the conduit is bent in the embodiment of FIG. 1. FIG.
１０ …離脱防止継手 １２，３８ …パイプ １４ …受口 １６ …継手本体 １８ …ゴム輪受容部 ２０ …テーパ部 ２２ …ゴム輪 ２４ …アダプタ ２６ …ハウジング ２８ …継手部 ３６ …リング収納部 ４０ …テーパ面 ４６ …離脱防止リング 10 ... Separation prevention joint 12, 38 ... Pipe 14 ... Receptacle 16 ... Joint body 18 ... Rubber ring receiving portion 20 ... Tapered portion 22 ... Rubber ring 24 ... Adapter 26 ... Housing 28 ... Joint portion 36 ... Ring receiving portion 40 ... Taper Face 46… Ring prevention ring
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松村 信秋 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuaki Matsumura 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Vinyl Pipe Co., Ltd.
Claims (1)
かって徐々に拡径されたテーパ部とを有する受口を含む
継手本体、 前記受口外周に形成される球状外面、 パイプの引き出し方向に向かって徐々に縮径されたテー
パ面を有する所定長さのリング収納部と、前記球状外面
に摺動可能に接触される球状内面を有する継手部とを含
むハウジング、 前記ゴム輪受容部に受容されるゴム輪、および前記リン
グ収納部に収納される離脱防止リングを備える、離脱防
止継手。1. A joint main body including a receiving opening having a rubber ring receiving portion and a tapered portion at a deeper portion thereof, the taper portion having a diameter gradually increasing toward the deep portion, a spherical outer surface formed on the outer circumference of the receiving opening, A housing including a ring housing portion of a predetermined length having a tapered surface that is gradually reduced in diameter in the pipe withdrawing direction, and a joint portion having a spherical inner surface that slidably contacts the spherical outer surface, the rubber A separation prevention joint comprising a rubber ring received in a wheel receiving portion and a separation prevention ring stored in the ring storage portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4017462A JP2698274B2 (en) | 1992-02-03 | 1992-02-03 | Separation prevention fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4017462A JP2698274B2 (en) | 1992-02-03 | 1992-02-03 | Separation prevention fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05215284A true JPH05215284A (en) | 1993-08-24 |
| JP2698274B2 JP2698274B2 (en) | 1998-01-19 |
Family
ID=11944694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4017462A Expired - Fee Related JP2698274B2 (en) | 1992-02-03 | 1992-02-03 | Separation prevention fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2698274B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5683119A (en) * | 1996-09-10 | 1997-11-04 | Metex Corporation | Pipe joint and seal therefor |
| US6604759B2 (en) * | 2000-09-22 | 2003-08-12 | Faurecia Abgastechnik Gmbh | Pipe connection |
| JP2008184905A (en) * | 2007-01-26 | 2008-08-14 | Nissan Diesel Motor Co Ltd | Connecting structure of oil cooler suction port |
-
1992
- 1992-02-03 JP JP4017462A patent/JP2698274B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5683119A (en) * | 1996-09-10 | 1997-11-04 | Metex Corporation | Pipe joint and seal therefor |
| US6604759B2 (en) * | 2000-09-22 | 2003-08-12 | Faurecia Abgastechnik Gmbh | Pipe connection |
| JP2008184905A (en) * | 2007-01-26 | 2008-08-14 | Nissan Diesel Motor Co Ltd | Connecting structure of oil cooler suction port |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2698274B2 (en) | 1998-01-19 |
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