JPH0317113Y2 - - Google Patents
Info
- Publication number
- JPH0317113Y2 JPH0317113Y2 JP1987081665U JP8166587U JPH0317113Y2 JP H0317113 Y2 JPH0317113 Y2 JP H0317113Y2 JP 1987081665 U JP1987081665 U JP 1987081665U JP 8166587 U JP8166587 U JP 8166587U JP H0317113 Y2 JPH0317113 Y2 JP H0317113Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint
- gripping tool
- outer periphery
- joint body
- 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
- 210000000078 claw Anatomy 0.000 claims description 29
- 238000005452 bending Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案はプラスチツクあるいはゴムよりなる
管体に用いる管継手に係り、詳しくは管体の繰返
し脱着が可能で、特に耐久性に優れた管継手に関
する。[Detailed description of the invention] [Industrial application field] This invention relates to a pipe joint for use with pipe bodies made of plastic or rubber, and more specifically, a pipe joint that allows the pipe body to be repeatedly attached and detached and is particularly durable. Regarding.
近年、流体を移送するための管体として、重
量、可撓性、耐薬品性等の面からプラスチツクあ
るいはゴムよりなる管体が用いられるようにな
り、それに伴つてそれら可撓性管体を接続するた
めの管継手も種々開発されている。なかでも工具
を用いることなく簡単に管体の着脱を行うことが
できる管継手は、その取扱い易さから各種機器に
おいて使用されている。
In recent years, tube bodies made of plastic or rubber have come to be used as tube bodies for transferring fluids due to their weight, flexibility, chemical resistance, etc. Various types of pipe joints have been developed for this purpose. Among these, pipe joints, which allow pipe bodies to be easily attached and detached without using tools, are used in various types of equipment because of their ease of handling.
このような管継手の一つの形式として、管体を
嵌入する中空部を有する継手本体と、この継手本
体内にあつて管体の抜けを抑止するために管体外
周に食い込むことにより把持する管体挿入方向へ
傾斜した複数の爪片を有する歯付座金状の把持具
と、この把持具の周縁部を継手本体内壁面に設け
た段部との間で保持するために継手本体内に嵌着
された押え筒体と、この押え筒体内に摺動可能に
内嵌し、前記把持具の爪片を外方に押し拡げるこ
とにより爪片の管体への食い込みを解除する開放
筒と、管体嵌入時に管体と継手本体内壁とに弾接
する断面Ｕ字形等のシールリングとを具備した管
継手がある。 One type of pipe joint is a joint body that has a hollow part into which the pipe body is inserted, and a pipe that is held within the joint body by biting into the outer periphery of the pipe body to prevent the pipe body from coming off. A toothed washer-like gripping tool having a plurality of claws inclined in the body insertion direction and a stepped portion provided on the inner wall of the joint body to hold the peripheral edge of this gripping tool between the an open cylinder that is slidably fitted into the presser cylinder and releases the claws from biting into the tube body by pushing and expanding the claws of the gripper outward; There is a pipe joint that includes a seal ring having a U-shaped cross section or the like that comes into elastic contact with the pipe body and the inner wall of the joint body when the pipe body is inserted into the pipe body.
この管継手は管体を継手本体内に嵌入しただけ
で継手本体内に管体が固定され、また開放筒を管
体嵌入方向へ押込むだけで固定された管体を継手
本体から取外すことができるようになつている
（例えば本出願人らの提案に係る実開昭60−19887
号、実開昭61−145188号公報参照）。 With this pipe fitting, the pipe body is fixed inside the joint body simply by inserting the pipe body into the joint body, and the fixed pipe body can be removed from the joint body simply by pushing the open tube in the direction of fitting the pipe body. (For example, Utility Model Application Publication No. 1988-19887 proposed by the present applicants)
(Refer to Utility Model Application Publication No. 1988-145188).
しかしながら、このような従来の管継手にあつ
ては、継手本体内の段部と押え筒体の端面との間
に僅かに空間を残し遊嵌されている歯付座金状の
把持具は管体の繰返し脱着あるいは管体の引抜方
向への過度な力などによりその周縁部が変形しや
すく、そのため把持力が低下するという問題点が
あつた。
However, in such conventional pipe joints, the toothed washer-shaped gripper, which is loosely fitted and leaves a slight space between the step inside the joint body and the end face of the holding cylinder, does not hold the pipe body. There was a problem in that the peripheral edge was easily deformed due to repeated attachment and detachment of the tube or excessive force in the direction of pulling out the tube, resulting in a decrease in gripping force.
この考案はこのような従来の問題点にかんがみ
てなされたものであつて、把持具の外周に筒状フ
ランジを形成することにより、上記問題点を解決
することを目的としている。 This invention was devised in view of these conventional problems, and aims to solve the above problems by forming a cylindrical flange on the outer periphery of the gripping tool.
上記目的を達成するために、この考案に係る管
継手は、管体を嵌入する中空部を有する継手本体
と、該継手本体内にあつて管体外周に食い込み把
持するための管体嵌入方向へ傾斜した爪片を有す
る把持具と、前記継手本体に内嵌し継手本体内の
段部との間で前記把持具を保持する押え筒体と、
該押え筒体に摺動可能に内嵌し前記把持具の爪片
を継手本体内壁面へ押拡することにより爪片の管
体外周への食い込みを解除する開放筒と、管体嵌
入時に管体と継手本体内壁とに弾接するシールリ
ングとを具備する管継手において、前記把持具
は、円環状の基部と、該基部の外周に一体に形成
された筒状フランジと、を有し、且つ当該把持具
の前記爪片は、前記基部の内周面に所定間隔を保
つて中心方向へ突出しさらに前記筒状フランジに
対して反対側へ傾斜して複数形成されてなり、前
記押え筒体の端部外周に該筒状フランジと嵌合す
る段差部を設けたことを特徴としたものである。
In order to achieve the above object, the pipe joint according to the present invention includes a joint body having a hollow portion into which the pipe body is inserted, and a joint body that is located inside the joint body and extends in the direction of insertion of the pipe body for biting into the outer periphery of the pipe body and gripping the pipe body. a gripping tool having an inclined claw piece; and a holding cylinder that fits inside the joint body and holds the gripping tool between a stepped portion in the joint body;
an open cylinder that is slidably fitted into the presser cylinder and releases the claws from biting into the outer periphery of the tube by pushing and expanding the claws of the gripper toward the inner wall surface of the joint body; In the pipe joint, the gripping tool has a ring-shaped base and a cylindrical flange integrally formed on the outer periphery of the base. A plurality of claw pieces of the gripping tool are formed on the inner circumferential surface of the base, protruding toward the center at a predetermined interval, and tilting toward the opposite side with respect to the cylindrical flange. It is characterized in that a stepped portion is provided on the outer periphery of the end portion to fit with the cylindrical flange.
この考案においては、継手本体に管体を嵌入し
て固定するときは、把持具の爪片が管体外周に食
い込んで強固に固定することができ、またこの固
定状態から管体を取り外すときには、開放筒を管
体嵌入方向へ押し込むと、その先端部が把持具の
爪片を継手本体内壁側へ押し拡げることにより爪
片の管体食い込みが解除される。このとき爪片の
基部をなす把持具の環状周縁部は爪片の傾斜の変
化するたびに応力を受けて変形しようとするが、
この環状周縁部の外周には筒状フランジが形成さ
れており、しかも筒状フランジが押え筒体端部の
段差部に嵌合しているので曲げ剛性が大きく、従
来のように管体の繰返し脱着による把持具周縁部
の変形は生じ難く、耐久性に優れたものとなる。
In this invention, when the tube body is fitted into the joint body and fixed, the claws of the gripping tool can bite into the outer periphery of the tube body and firmly fix it, and when the tube body is removed from this fixed state, When the opening tube is pushed in the direction of fitting into the tube body, its tip pushes and spreads the claws of the gripper toward the inner wall of the joint body, thereby releasing the claws from digging into the tube body. At this time, the annular periphery of the gripping tool that forms the base of the claw tends to deform due to stress each time the inclination of the claw changes.
A cylindrical flange is formed on the outer periphery of this annular periphery, and since the cylindrical flange fits into the step at the end of the presser cylinder, the bending rigidity is large, and the repetition of the tube as in the past Deformation of the peripheral edge of the gripper due to attachment and detachment is less likely to occur, resulting in excellent durability.
そして、本考案によれば、前記把持具における
筒状フランジは前記円環状の基部の外周に形成さ
れているため、当該基部は押え筒体の段差部と係
合する筒状フランジと一体となつていて特に曲げ
に対する剛性を大きくでき、その結果、基部に与
える変形は極めて小さく、把持具の疲労変形を長
期に渡つて防止することができる。 According to the present invention, the cylindrical flange of the gripping tool is formed on the outer periphery of the annular base, so that the base is integrated with the cylindrical flange that engages with the stepped portion of the presser cylinder. In particular, the rigidity against bending can be increased, and as a result, the deformation imparted to the base is extremely small, and fatigue deformation of the gripping tool can be prevented over a long period of time.
以下、この考案を図面に基づいて説明する。第
１〜５図は本考案に係る一実施例を示す図であ
る。
This invention will be explained below based on the drawings. 1 to 5 are diagrams showing an embodiment of the present invention.
先ず構成を説明すると、１は管継手であつて、
管体２を嵌入する中空部を有する継手本体３と、
この継手本体３内に保持された食い込み爪片４を
有する把持具５と、この把持具を保持するために
継手本体３内に嵌入された押え筒体６と、把持具
５の爪片４を管体挿入方向へ押拡する開放筒７
と、管体挿入時に管体２と継手本体内壁３ａとに
弾接する断面Ｕ字形のシールリング８とを備えて
いる。 First, to explain the configuration, 1 is a pipe joint,
a joint body 3 having a hollow portion into which the pipe body 2 is fitted;
A gripper 5 having biting claw pieces 4 held in the joint body 3, a presser cylinder 6 fitted into the joint body 3 to hold the gripper, and a gripper 5 having the claw pieces 4 of the gripper 5. Open tube 7 that expands in the tube insertion direction
and a seal ring 8 having a U-shaped cross section that comes into elastic contact with the tube body 2 and the inner wall 3a of the joint body when the tube body is inserted.
継手本体３は、その内壁面３ａに３つの段部３
ｂ，３ｃ，３ｄを形成するとともに押え筒体６を
嵌着固定するための係合部３ｅが形成されてい
る。 The joint body 3 has three steps 3 on its inner wall surface 3a.
b, 3c, and 3d, and an engaging portion 3e for fitting and fixing the presser cylinder 6 is formed.
押え筒体６は、一方の端部外周に前記継手本体
の係合部３ｅと係合する突起６ａが設けられ、他
方の端部外周には把持具５の筒状フランジ５ａと
係合する段差部６ｂが形成されている。またこの
押え筒体６は、突起６ａの部分を継手本体３の係
合部３ｅへ圧入する等により継手本体３内に嵌着
固定される。 The presser cylinder 6 is provided with a protrusion 6a that engages with the engaging portion 3e of the joint body on the outer periphery of one end, and a step that engages with the cylindrical flange 5a of the gripper 5 on the outer periphery of the other end. A portion 6b is formed. Further, the holding cylinder 6 is fitted and fixed into the joint body 3 by press-fitting the protrusion 6a into the engaging portion 3e of the joint body 3.
把持具５は、第４，５図に示すように歯付座金
状の形状を有していて、その円環状の基部５ｂの
外周には筒状フランジ５ａが形成されており、さ
らに基部５ｂの内周には所定間隔を保つて中心方
向へ突出し且つ筒状フランジ５ａに対して反対側
へ傾斜した複数の爪片４が形成されている。ま
た、この把持具５は前記押え筒体６の段差部６ｂ
にその筒状フランジ５ａが嵌合するごとく、押え
筒体６の端面と継手本体３の段部３ｂとの間に回
動可能に介装されている。さらに、この把持具５
は例えばリン青銅等の比較的に疲労強度の大きい
弾性素材により形成されている。 As shown in FIGS. 4 and 5, the gripping tool 5 has a toothed washer-like shape, and a cylindrical flange 5a is formed on the outer periphery of the annular base 5b. A plurality of claw pieces 4 are formed on the inner periphery, projecting toward the center at predetermined intervals and tilting toward the opposite side with respect to the cylindrical flange 5a. Moreover, this gripping tool 5
The cylindrical flange 5a is rotatably interposed between the end face of the presser cylinder 6 and the stepped portion 3b of the joint body 3 so that the cylindrical flange 5a fits into the cylindrical flange 5a. Furthermore, this gripping tool 5
is made of an elastic material with relatively high fatigue strength, such as phosphor bronze.
開放筒７は、押え筒体６に摺動可能に内嵌した
ときに把持具５に臨む側の端部に斜面７ａが形成
され、他端にはこの開放筒を継手本体３内へ押し
込むときの押圧部となるフランジ７ｂが設けられ
ている。 The open cylinder 7 has a slope 7a formed at the end facing the gripper 5 when the open cylinder 7 is slidably fitted into the presser cylinder 6, and a slope 7a formed at the other end when the open cylinder is pushed into the joint body 3. A flange 7b serving as a pressing portion is provided.
８は弾性体よりなる断面Ｕ字形のシールリング
であつて、継手本体３の段部３ｃに掛止されるご
とく内嵌され、管体２が継手本体３内へ嵌入され
たときに、継手本体の内壁面３ａと管体２の外周
面に弾接することにより気密性を保つようになつ
ている。なお、シールリングは例えばＯリング等
の他の形状のものであつてもよい。 Reference numeral 8 denotes a seal ring having a U-shaped cross section and made of an elastic material, and is fitted into the joint body 3 so as to be latched onto the step 3c, and when the pipe body 2 is inserted into the joint body 3, Airtightness is maintained by making elastic contact with the inner wall surface 3a of the tube body 2 and the outer peripheral surface of the tube body 2. Note that the seal ring may have another shape, such as an O-ring.
次に、上記実施例の動作を説明する。 Next, the operation of the above embodiment will be explained.
管体２を継手本体３に装着するには、管体２を
開放筒７内へ嵌入する。嵌入につれて管体２は、
その先端部がまず初めに把持具５の爪片４に当接
するとともに、その弾性に抗して爪片４を継手本
体の内壁側へ押拡し、次いでシールリング８の内
周面８ａと摺接しつつ進入し、継手本体３内の段
部３ｄに当接する状態となつて管体２は継手本体
３に装着される。すなわち、この状態においては
把持具５の爪片４がその弾力によつて管体２に圧
接しているので、管体２を抜き出そうとすると、
第２図に示すように、爪片４の先端が管体２へ食
い込み勝手に作用し、抜き出しを阻止することに
よつて管体２を強固に保持する。 To attach the tube body 2 to the joint body 3, the tube body 2 is inserted into the open cylinder 7. As the tube body 2 is inserted,
The tip first comes into contact with the claw piece 4 of the gripper 5, pushes the claw piece 4 toward the inner wall of the joint body against its elasticity, and then slides against the inner circumferential surface 8a of the seal ring 8. The pipe body 2 enters the joint body 3 while making contact with the step portion 3d in the joint body 3, and the pipe body 2 is attached to the joint body 3. That is, in this state, the claws 4 of the gripper 5 are in pressure contact with the tube body 2 due to their elasticity, so if you try to pull out the tube body 2,
As shown in FIG. 2, the tip of the claw piece 4 bites into the tubular body 2 and acts on its own to prevent the tubular body 2 from being pulled out, thereby firmly holding the tubular body 2.
また、上記の状態にある管体２を継手本体３か
ら取り外すには、開放筒７を継手本体３内へ押し
込み、その先端の斜面７ａを爪片４に当接させて
これをその弾性に抗して押拡し、管体２に食い込
んでいた爪片４の先端を管体表面から離脱させ、
食い込みを解除することにより、管体２を継手本
体３から容易に引抜くことができる。 In addition, in order to remove the tube body 2 in the above state from the joint body 3, the open tube 7 is pushed into the joint body 3, and the inclined surface 7a at the tip is brought into contact with the claw piece 4 to resist its elasticity. The tip of the claw piece 4 that had bitten into the tube body 2 is released from the tube surface, and
By releasing the biting, the tube body 2 can be easily pulled out from the joint body 3.
上記のように把持具５の爪片４は、管体２の装
着時には管体２の先端により、また取外し時には
開放筒７の斜面７ａにより曲げ応力を受ける。そ
してこの曲げ応力はこの継手１の使用時間に比例
して繰返し頻度が増えて把持具５の基部５ｂを変
形させようとするが、基部５ｂは押え筒体６の段
差部６ｂと係合する筒状フランジ５ａと一体とな
つていて特に曲げに対して剛性が大きいために、
爪片４の受ける曲げ応力は爪片４にその長手方向
において弾性限度内変形を生ぜしめるのみで、基
部５ｂに与える変形は極めて小さい。従つて、把
持具５の疲労変形は長期にわたつて生じ難い。 As described above, the claws 4 of the gripper 5 are subjected to bending stress by the tip of the tube 2 when it is attached, and by the slope 7a of the open tube 7 when it is removed. This bending stress is repeated more frequently in proportion to the usage time of the joint 1 and tries to deform the base 5b of the gripping tool 5, but the base 5b is a cylinder that engages with the stepped portion 6b of the presser cylinder 6. Since it is integrated with the shaped flange 5a and has high rigidity especially against bending,
The bending stress applied to the claw piece 4 only causes the claw piece 4 to deform within its elastic limit in its longitudinal direction, and the deformation imparted to the base portion 5b is extremely small. Therefore, fatigue deformation of the gripper 5 is unlikely to occur over a long period of time.
以上説明したように、本考案によれば、把持具
の基部の剛性を高めることにより、従来例に比較
して管継手としての耐用期間を大幅に向上でき
る、という効果が得られる。
As explained above, according to the present invention, by increasing the rigidity of the base of the gripping tool, the useful life of the pipe joint can be significantly improved compared to the conventional example.
第１図は本考案に係る管継手実施例の断面図、
第２図は第１図実施例に管体を嵌入保持した状態
を示す断面図、第３図は管体を取外すときの実施
例の作用説明図、第４図は把持具の正面図、第５
図は把持具の半断面側面図である。
２……管体、３……継手本体、３ａ……継手本
体内壁、３ｂ，３ｃ，３ｄ……段部、４……爪
片、５……把持具、５ａ……筒状フランジ、６…
…押え筒体、６ｂ……段差部、７……開放筒、８
……シールリング。
FIG. 1 is a sectional view of an embodiment of a pipe joint according to the present invention;
2 is a cross-sectional view showing the tubular body fitted and held in the embodiment of FIG. 5
The figure is a half-sectional side view of the gripper. 2... Pipe body, 3... Joint body, 3a... Joint body inner wall, 3b, 3c, 3d... Step portion, 4... Claw piece, 5... Gripping tool, 5a... Cylindrical flange, 6...
... Presser cylinder body, 6b ... Step part, 7 ... Open cylinder, 8
……Seal ring.
Claims (1)
継手本体内にあつて管体外周に食い込み把持する
ための管体嵌入方向へ傾斜した爪片を有する把持
具と、前記継手本体に内嵌し継手本体内の段部と
の間で前記把持具を保持する押え筒体と、該押え
筒体に摺動可能に内嵌し前記把持具の爪片を継手
本体内壁面へ押拡することにより爪片の管体外周
への食い込みを解除する開放筒と、管体嵌入時に
管体と継手本体内壁とに弾接するシールリングと
を具備する管継手において、前記把持具は、円環
状の基部と、該基部の外周に一体に形成された筒
状フランジと、を有し、且つ当該把持具の前記爪
片は、前記基部の内周面に所定間隔を保つて中心
方向へ突出しさらに前記筒状フランジに対して反
対側へ傾斜して複数形成されてなり、前記押え筒
体の端部外周に該筒状フランジと嵌合する段差部
を設けたことを特徴とする管継手。 A joint body having a hollow portion into which the pipe body is inserted, a gripping tool having a claw piece disposed within the joint body and inclined in a direction in which the pipe body is inserted for biting into the outer periphery of the pipe body and gripping the pipe body, and a gripping tool that is internally fitted into the joint body. a presser cylinder that holds the gripping tool between a stepped portion in the joint body; and a presser cylinder that is slidably fitted into the presser cylinder and presses and expands the claws of the gripper toward the wall surface inside the joint main body. In the pipe joint, the gripping tool includes an open cylinder that releases the claws from biting into the outer periphery of the pipe body, and a seal ring that makes elastic contact with the pipe body and the inner wall of the joint body when the pipe body is inserted. and a cylindrical flange integrally formed on the outer periphery of the base, and the claws of the gripping tool protrude toward the center at a predetermined distance from the inner circumferential surface of the base, and further extend toward the center of the base. 1. A pipe joint, characterized in that a plurality of pipe joints are formed at an angle opposite to the cylindrical flange, and a stepped portion is provided on the outer periphery of the end of the holding cylinder body to fit with the cylindrical flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987081665U JPH0317113Y2 (en) | 1987-05-28 | 1987-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987081665U JPH0317113Y2 (en) | 1987-05-28 | 1987-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63188391U JPS63188391U (en) | 1988-12-02 |
| JPH0317113Y2 true JPH0317113Y2 (en) | 1991-04-11 |
Family
ID=30933610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987081665U Expired JPH0317113Y2 (en) | 1987-05-28 | 1987-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317113Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4486343B2 (en) * | 2003-10-28 | 2010-06-23 | 株式会社ブリヂストン | Pipe holding member for resin pipe fittings |
| JP2013245803A (en) * | 2012-05-29 | 2013-12-09 | Jfe Pipe Fitting Mfg Co Ltd | Pipe joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5034832U (en) * | 1973-07-24 | 1975-04-14 |
-
1987
- 1987-05-28 JP JP1987081665U patent/JPH0317113Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63188391U (en) | 1988-12-02 |
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