JP3429470B2 - Pipe fittings - Google Patents
Pipe fittingsInfo
- Publication number
- JP3429470B2 JP3429470B2 JP2000052902A JP2000052902A JP3429470B2 JP 3429470 B2 JP3429470 B2 JP 3429470B2 JP 2000052902 A JP2000052902 A JP 2000052902A JP 2000052902 A JP2000052902 A JP 2000052902A JP 3429470 B2 JP3429470 B2 JP 3429470B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint
- fluid
- pressing
- outer fitting
- 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 - Fee Related
Links
Landscapes
- Joints With Sleeves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、例えば水道管、ガ
ス管、プラント用配管等に使用される流体管を接続する
管継手に関する。
【０００２】
【従来の技術】従来のこの管継手は、例えば、特開平１
１−３２５３４７号公報に記載のものがある。同公報に
記載の管継手５０は、図７に示す如く、内面中央にスト
ッパー５１を有する継手本体５２と、継手本体５２に締
結される押輪５５と、押輪５５の内周面に配置されるロ
ックリング５６と、流体管５７を継手本体５２に水密に
接続するパッキン５８と、パッキン５８を押圧するリテ
ーナ６０と、流体管５７の端部内周に装着されたインコ
ア６１とから構成されたものである。
【０００３】
【発明が解決しようとする課題】前記従来の管継手は、
継手本体５２とインコア６１とが別体であったため、部
品点数が増加すると共に、インコア６１及び継手本体５
２をそれぞれ流体管に装着する必要がある。流体管の内
部に挿入されるインコア６１と流体管の外面に装着され
る継手本体５２が別体であると、それぞれを流体管５７
にセットする作業工程で別々になるため、両方の流体管
の接続作業が煩雑となり、長時間を要するという問題が
あった。
【０００４】本発明は、上記問題を解決するために講じ
たもので、部品点数を少なくできると共に流体管の接続
作業を容易に行えるようにすることを課題とする。
【０００５】
【課題を解決するための手段】本発明は、前記課題を解
決するために、一対の流体管の端部に装着される継手本
体３を備えた管継手において、前記継手本体３の両側に
は、流体管８の内部に挿入されるインコア部１０と、流
体管８の外側に位置する外嵌部１１とが一体的に備えら
れ、各外嵌部１１は拡縮自在に設けられ、それぞれの流
体管８の端部を縮径される外嵌部１１とインコア部１０
とで挟持できるようにしたことにある。
【０００６】そして、継手本体３は、流体管８の内部に
挿入されるインコア部１０と、流体管８の外側に位置す
る外嵌部１１とを一体的に備えていることから、流体管
の接続作業の現場において、該インコア部１０と外嵌部
１１とを同時に流体管８の内外にそれぞれ嵌合させるこ
とができ、接続作業を容易且つ迅速に行える。しかも、
部品点数も少なくなる。
【０００７】
【０００８】
【発明の実施の形態】以下、実施の形態につき、図面を
参照して説明する。図１〜図４は、例えばポリエチレン
管等の水道用流体管を連結するための管継手を示す。か
かる管継手１は、継手本体３と、該継手本体３に外嵌さ
れるリング状の押さえ体５とを備えている。
【０００９】継手本体３は、略円板状を呈し且つ周方向
に取付孔６を複数有するフランジ部７と、該フランジ部
７から一体的に突出し且つ流体管８の一端部側の内周面
８ａに挿通されるインコア部（内嵌筒部）１０と、流体
管８の一端部側の外周面８ｂに外嵌されるように、前記
フランジ部７に一体的に突出する外嵌部１１とからな
る。尚、外嵌部１１の内周面１１ａと内嵌筒部１０の外
周面１０ａとの間には、流体管８の肉厚よりも若干大き
な間隙（嵌入凹部）１３を有している。尚、１４は水密
性を維持するシールリングである。
【００１０】前記外嵌部１１には、その周方向に切欠部
１５が複数形成されている。各切欠部１５は、先端側が
開口し且つ外嵌部１１の基部近傍まで延設され、先端側
の小幅部１５ａと、該小幅部１５ａに連続する大幅部１
５ｂとからなる。このように複数の切欠部１５を外嵌部
１１に形成することにより、外嵌部１１は押圧部１６が
複数形成された状態となり、各押圧部１６はその基部を
支点に弾性力に抗して外嵌部１１の直径方向に揺動させ
ることができ、外嵌部１１を拡縮させることができる。
各押圧部１６の内周面側には、前記楔刃１８が周方向に
単数状又は複数状突設されている。
【００１１】また、各押圧部１６の肉厚は、基部側が一
定になっており、先端側に向けて次第に厚くなってい
る。従って、各押圧部１６の外周面側で且つ先端側に
は、先端に向けて次第に径外方向に傾斜するテーパー面
２０が形成されている。更に、各押圧部１６の先端に
は、径外方向に突出する抜止部２１が形成されている。
【００１２】前記押さえ体５の内径は、外嵌部１１の基
部側の外径よりも大きく、且つ、外嵌部の先端の傾斜面
の最大径よりも小さく設定されている。また、押さえ体
５には、複数のねじ孔２３が形成されており、各ねじ孔
２３に螺合されるねじ２５の先端を任意の押さえ体５に
押圧させることにより、押さえ体５が外嵌部１１に対し
て不用意に移動するのを阻止できる。
【００１３】次に、前記管継手１を使用して流体管８を
接続する場合について説明する。先ず、継手本体３に押
さえ体５を装着する。即ち、継手本体３の押圧部１６を
互いに縮径させ、縮径した継手本体３に押さえ体５を、
継手本体３の基部側まで挿通する。尚、押さえ体５を離
すと、押圧部１６は弾性力で元の位置まで拡径すること
から、押さえ体５が継手本体３から抜け出ることはな
い。
【００１４】更に、流体管８の端部を、継手本体３の嵌
入凹部１３に挿入する。そして、押圧部１６の基部側に
ある押さえ体５を継手本体の先端側に移動させると、押
さえ体５は、継手本体３のテーパー面２０を摺動するこ
ととなり、このテーパ係合により、継手本体を収径させ
ることができる。
【００１５】このとき、押圧部１６に設けられた楔刃１
８が、流体管８の表面に食い込んで係止され、継手本体
３の抜け出しが阻止されることとなる。更に、押さえ体
５に螺合されたねじ２５を締結し、その先端を押圧部１
６に押し付けることにより、押さえ体５を固定させるこ
とができる。
【００１６】同様にして、他方の流体管８にも管継手を
取り付ける。そして、両方の管継手１のフランジ部７同
士を、パッキンを介して対向させ、それぞれの取付孔６
にボルト２７を挿通し、両フランジ部７同士を連結して
管継手１の接続を完了する。
【００１７】図４及び図５は他の実施の形態を示し、前
記継手本体３の押圧部１６は、テーパ面が設けられるこ
とはなく、前記抜止体２１と平行に別の抜止体３０が形
成されている。また、前記押さえ体５は、第一押さえ体
５ａと第二押さえ体５ｂとから構成されたもの（二分割
されたもの）である。第一押さえ体５ａと第二押さえ体
５ｂは、円弧部３２と該円弧部３２の両側に突設する締
結部３３とからなる。
【００１８】両方の円弧部３２を継手本体３に装着した
際には、第一押さえ体５ａと第二押さえ体５ｂのそれぞ
の締結部３３をボルト３５で締結するものである。
【００１９】図６は本発明の実施の形態を示し、単体の
継手本体３で一対の流体管８を接続するものである。即
ち、前記筒状の内嵌筒部１０の中央に環状の連結部３７
が設けられ、該連結部３７に一対の外嵌部１１及び押さ
え体５がそれぞれ設けられている。尚、各外嵌部１１形
状は前記図１に示したものと同様であるため詳細な説明
は省略する。
【００２０】さらに、本発明は水道管だけでなく、ガス
管などにも適用できる。すなわち、流体管内を流れる流
体は、水の他にガスやオイルなど他の流体であっても本
発明の範囲に含まれる。
【００２１】
【発明の効果】本発明は、前記課題を解決するために、
一対の流体管の端部に装着される継手本体を備えた管継
手において、前記継手本体の両側には、流体管の内部に
挿入されるインコア部と、流体管の外側に位置する外嵌
部とが一体的に備えられ、各外嵌部は拡縮自在に設けら
れ、それぞれの流体管の端部を縮径される外嵌部とイン
コア部とで挟持できるので、流体管の接続作業の現場に
おいて、該インコア部と外嵌部とを同時に流体管の内外
にそれぞれ嵌合させることができ、接続作業を容易且つ
迅速に行え、しかも、部品点数も少なくできる利点があ
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for connecting a fluid pipe used for, for example, a water pipe, a gas pipe, a pipe for a plant, and the like. 2. Description of the Related Art A conventional pipe joint is disclosed in, for example,
There is the one described in 1-325347. As shown in FIG. 7, a pipe joint 50 described in the publication has a joint body 52 having a stopper 51 at the center of the inner surface, a push ring 55 fastened to the joint body 52, and a lock disposed on the inner peripheral surface of the push ring 55. It comprises a ring 56, a packing 58 for connecting the fluid pipe 57 to the joint body 52 in a watertight manner, a retainer 60 for pressing the packing 58, and an in-core 61 mounted on the inner periphery of the end of the fluid pipe 57. . [0003] The conventional pipe joint is
Since the joint body 52 and the in-core 61 are separate bodies, the number of parts increases, and the in-core 61 and the in-core
2 must be attached to the fluid pipes. When the in-core 61 inserted into the fluid pipe and the joint body 52 attached to the outer surface of the fluid pipe are separate bodies,
However, there is a problem that the connection work of both fluid pipes is complicated, and a long time is required. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to reduce the number of parts and to facilitate connection work of fluid pipes. [0005] In order to solve the above-mentioned problems, the present invention provides a joint pipe attached to ends of a pair of fluid pipes.
In the pipe joint provided with the body 3, on both sides of the joint body 3,
Includes a-core portion 10 to be inserted into a fluid conduit 8, and the outer fitting portion 11 positioned outside of the fluid pipe 8 gills Bei integrally
Are, each outer fitting portion 11 is mounted for scaling, the outer fitting portion 11 and the in-core portion 10 which is reduced in diameter end portion of the respective flow <br/> body tube 8
And that it can be pinched. The joint body 3 is integrally provided with an in-core portion 10 inserted into the fluid pipe 8 and an outer fitting portion 11 located outside the fluid pipe 8, so that the fluid pipe 8 At the connection work site, the in-core portion 10 and the outer fitting portion 11 can be simultaneously fitted to the inside and outside of the fluid pipe 8, respectively, so that the connection work can be performed easily and quickly. Moreover,
The number of parts is also reduced. [0008] Embodiments will be described below with reference to the accompanying drawings. 1 to 4 show a pipe joint for connecting a water pipe such as a polyethylene pipe. The pipe joint 1 includes a joint main body 3 and a ring-shaped pressing body 5 fitted to the joint main body 3. The joint body 3 has a substantially disk-shaped flange portion 7 having a plurality of mounting holes 6 in a circumferential direction, and an inner peripheral surface integrally protruding from the flange portion 7 at one end side of the fluid pipe 8. An in-core portion (inner fitting tube portion) 10 inserted into the flange portion 8a; and an outer fitting portion 11 integrally projecting from the flange portion 7 so as to be fitted on the outer peripheral surface 8b on one end side of the fluid pipe 8. Consists of In addition, a gap (fitting concave portion) 13 slightly larger than the thickness of the fluid pipe 8 is provided between the inner peripheral surface 11a of the outer fitting portion 11 and the outer peripheral surface 10a of the inner fitting cylindrical portion 10. Reference numeral 14 denotes a seal ring for maintaining watertightness. The outer fitting portion 11 has a plurality of cutouts 15 formed in a circumferential direction thereof. Each notch 15 is open at the distal end and extends to near the base of the outer fitting portion 11, and has a small width portion 15a at the distal end and a large portion 1 connected to the small width portion 15a.
5b. By forming the plurality of cutouts 15 in the outer fitting portion 11 as described above, the outer fitting portion 11 is in a state in which a plurality of pressing portions 16 are formed, and each pressing portion 16 resists elastic force with its base as a fulcrum. As a result, the outer fitting portion 11 can be swung in the diameter direction, and the outer fitting portion 11 can be expanded or contracted.
The wedge blade 18 is provided on the inner peripheral surface side of each pressing portion 16 in a singular or plural shape in the circumferential direction. The thickness of each pressing portion 16 is constant at the base side and gradually increases toward the tip end. Therefore, a tapered surface 20 that is gradually inclined radially outward toward the tip is formed on the outer peripheral surface side and the tip end side of each pressing portion 16. Further, a retaining portion 21 is formed at the tip of each pressing portion 16 to protrude radially outward. The inner diameter of the holding body 5 is set to be larger than the outer diameter of the outer fitting portion 11 on the base side and smaller than the maximum diameter of the inclined surface at the tip of the outer fitting portion. Further, a plurality of screw holes 23 are formed in the holding body 5, and the tip of a screw 25 screwed into each of the screw holes 23 is pressed against an arbitrary holding body 5 so that the holding body 5 is externally fitted. Inadvertent movement with respect to the part 11 can be prevented. Next, the case where the fluid pipe 8 is connected using the pipe joint 1 will be described. First, the holding body 5 is attached to the joint body 3. That is, the pressing portions 16 of the joint body 3 are reduced in diameter from each other, and the holding body 5 is attached to the joint body 3 whose diameter has been reduced.
Insert up to the base side of the joint body 3. When the pressing member 5 is released, the pressing portion 16 expands to the original position by the elastic force, so that the pressing member 5 does not fall out of the joint body 3. Further, the end of the fluid pipe 8 is inserted into the fitting recess 13 of the joint body 3. When the pressing body 5 at the base side of the pressing portion 16 is moved to the distal end side of the joint body, the pressing body 5 slides on the tapered surface 20 of the joint body 3. The body can be reduced in diameter. At this time, the wedge blade 1 provided on the pressing portion 16
As a result, the joint 8 bites into the surface of the fluid pipe 8 and is locked, so that the joint body 3 is prevented from coming off. Further, a screw 25 screwed to the holding body 5 is fastened, and the tip of the screw 25 is
The pressing body 5 can be fixed by pressing the pressing body 5. Similarly, a pipe joint is attached to the other fluid pipe 8. Then, the flange portions 7 of the two pipe joints 1 are opposed to each other via a packing, and the respective mounting holes 6 are formed.
And the flanges 7 are connected to each other to complete the connection of the pipe joint 1. FIGS. 4 and 5 show another embodiment, in which the pressing portion 16 of the joint body 3 is not provided with a tapered surface, and another retaining body 30 is formed in parallel with the retaining body 21. Have been. The pressing member 5 is composed of a first pressing member 5a and a second pressing member 5b (divided into two). The first holding member 5a and the second holding member 5b each include an arc portion 32 and fastening portions 33 projecting from both sides of the arc portion 32. When the two arc portions 32 are mounted on the joint body 3, the fastening portions 33 of the first holding member 5a and the second holding member 5b are fastened by bolts 35. [0019] Figure 6 shows an implementation of the embodiment of the present invention is intended to connect a pair of fluid conduit 8 in a single joint body 3. That is, an annular connecting portion 37 is provided at the center of the cylindrical inner fitting tube portion 10.
Are provided, and a pair of the outer fitting portions 11 and the pressing body 5 are provided on the connecting portion 37, respectively. Since the shape of each outer fitting portion 11 is the same as that shown in FIG. 1, detailed description will be omitted. Further, the present invention can be applied not only to water pipes but also to gas pipes and the like. That is, the fluid flowing through the fluid pipe is not limited to water, but may be other fluids such as gas and oil. According to the present invention, in order to solve the above-mentioned problems,
In a pipe joint having a joint body attached to ends of a pair of fluid pipes, on both sides of the joint body, an in-core part inserted into the fluid pipe and an outer fitting part located outside the fluid pipe Doo is integrally Bei Erare, the outer fitting portion is provided freely scaled, since it held between the outer fitting portion and the in-core portion which is reduced in diameter the end of each fluid conduit, the fluid pipe connection work In the field, the in-core portion and the outer fitting portion can be simultaneously fitted to the inside and outside of the fluid pipe, respectively, so that there is an advantage that the connecting operation can be performed easily and quickly, and the number of parts can be reduced.
【図面の簡単な説明】
【図１】本発明の一実施の形態の断面正面図。
【図２】同側面図。
【図３】同継手本体を示す一部断面正面図。
【図４】本発明の他の実施の形態の断面正面図。
【図５】同側面図。
【図６】本発明の他の実施の形態の要部を示す断面正面
図。
【図７】従来例を示す断面図。
【符号の説明】
１…管継手、３…継手本体、８…流体管、１０…インコ
ア部、１１…外嵌部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional front view of an embodiment of the present invention. FIG. 2 is a side view of the same. FIG. 3 is a partially sectional front view showing the joint main body. FIG. 4 is a sectional front view of another embodiment of the present invention. FIG. 5 is a side view of the same. FIG. 6 is a sectional front view showing a main part of another embodiment of the present invention. FIG. 7 is a sectional view showing a conventional example. [Description of References] 1 ... pipe joint, 3 ... joint body, 8 ... fluid pipe, 10 ... in-core part, 11 ... outer fitting part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 21/08 F16L 37/04 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) F16L 21/08 F16L 37/04
Claims (1)
体（３）を備えた管継手において、前記継手本体（３）
の両側には、流体管（８）の内部に挿入されるインコア
部（１０）と、流体管（８）の外側に位置する外嵌部
（１１）とが一体的に備えられ、各外嵌部（１１）は拡
縮自在に設けられ、それぞれの流体管（８）の端部を縮
径される外嵌部（１１）とインコア部（１０）とで挟持
できるようにしたことを特徴とする管継手。(57) [Claims] [Claim 1] A joint book attached to ends of a pair of fluid pipes
A pipe joint provided with a body (3) , wherein the joint body (3) is provided.
On both sides of, incore portion to be inserted into the interior of the fluid tube (8) and (10), the outer fitting portion located on the outer side of the fluid tube (8) (11) and is integrally Bei Erare, each outer The fitting portion (11) is provided so as to be expandable and contractable, and the end of each fluid pipe (8) can be held between the outer fitting portion (11) whose diameter is reduced and the in-core portion (10). Pipe fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000052902A JP3429470B2 (en) | 2000-02-29 | 2000-02-29 | Pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000052902A JP3429470B2 (en) | 2000-02-29 | 2000-02-29 | Pipe fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001241581A JP2001241581A (en) | 2001-09-07 |
| JP3429470B2 true JP3429470B2 (en) | 2003-07-22 |
Family
ID=18574353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000052902A Expired - Fee Related JP3429470B2 (en) | 2000-02-29 | 2000-02-29 | Pipe fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3429470B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4406833B2 (en) * | 2004-03-26 | 2010-02-03 | 株式会社山辰組 | Water hose, pipe connector and connection method |
| JP2007024227A (en) * | 2005-07-19 | 2007-02-01 | Chiyoda Kogyo Kk | Cover for piping, and connection structure |
| KR100665208B1 (en) * | 2006-05-25 | 2007-01-04 | 대림개발(주) | Connecting tube |
| JP5611726B2 (en) * | 2010-08-27 | 2014-10-22 | クボタシーアイ株式会社 | Pipe fitting |
| KR101518679B1 (en) * | 2014-10-13 | 2015-05-15 | 주식회사 비비테크 | Adapter assembly for connecting pipe and assembling device thereof |
-
2000
- 2000-02-29 JP JP2000052902A patent/JP3429470B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001241581A (en) | 2001-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5080405A (en) | Corrugated pipe coupling | |
| JP3678720B2 (en) | Flexible pipe joint | |
| JPH06193786A (en) | Pipe joint device | |
| JPH06123390A (en) | Quick pipe connector and connecting method thereof | |
| JP4939826B2 (en) | How to assemble pipe fittings | |
| CA2068968A1 (en) | Retainer for use in pipe joints | |
| JP3429470B2 (en) | Pipe fittings | |
| GB2167145A (en) | Pipe couplings | |
| JP3553713B2 (en) | Fluid pipe seal structure | |
| JP3000435B2 (en) | Branch pipe fitting | |
| JPH11173472A (en) | Joint structure | |
| JPS6124782Y2 (en) | ||
| JP2001311492A (en) | Slip-on pipe joint | |
| JP3197655B2 (en) | Pipe joint structure | |
| JP2019027079A (en) | Sewage bypass device for manhole | |
| JP2005061469A (en) | Pipe joint | |
| US5484171A (en) | Coupling joint | |
| EP0551548A1 (en) | Connecting means for co-directionally abutting pipes | |
| JP3434755B2 (en) | Fluid pipe connection structure of fluid equipment | |
| JP2004190700A (en) | Structure of expansion joint | |
| JPH03194286A (en) | Pipe joint | |
| JP3698380B2 (en) | Mounting ring expansion device | |
| JPH09126355A (en) | Earthquake-proof fluid piping system | |
| JP2500840B2 (en) | Pipe connection structure | |
| JP4599299B2 (en) | Pipe fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080516 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090516 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090516 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100516 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110516 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |