JPH0327796B2 - - Google Patents
Info
- Publication number
- JPH0327796B2 JPH0327796B2 JP63156369A JP15636988A JPH0327796B2 JP H0327796 B2 JPH0327796 B2 JP H0327796B2 JP 63156369 A JP63156369 A JP 63156369A JP 15636988 A JP15636988 A JP 15636988A JP H0327796 B2 JPH0327796 B2 JP H0327796B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- gripping tool
- joint
- tube
- claws
- 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 - Lifetime
Links
- 210000000078 claw Anatomy 0.000 claims description 20
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000003483 aging Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
〔産業上の利用分野〕
この発明は、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
り返し着脱が可能で、特に耐久性に優れた管継手
に関する。
〔従来の技術〕
近年、プラスチツクチユーブあるいはゴムチユ
ーブなどの可撓性管体を接続するための管継手と
して、工具を用いることなく簡単に管体の着脱を
行なうことのできる管継手が、その取り扱い易さ
から各種の機器に広く使用されている。この種の
管継手の代表的なものとしては、例えば、実開昭
60−14386号などに示されるように、管体挿入方
向に傾斜し、管体の外周面に喰い込むことによつ
て把持する複数の爪片が中心に向かつて等間隔で
設けられた環状の把持具と、この把持具の近傍に
あつて管体離脱時に前記把持具の爪片を継手本体
内壁側に押し倒し、該爪片の喰い込み部を管体外
周面より離脱する開放筒とにより管体の着脱を行
なう型式のものがあり、この管継手は、管体を継
手本体内に挿入しただけで継手本体に管体が固定
され、この固定状態で前記開放筒を管体挿入方向
に押し込むことによつて管体を継手本体内から取
り外すことができるような構成になつている。
このような管継手にあつては、把持具の素材が
もつ弾発力を利用して管体の把持及びその開放が
行なわれるので、把持具には、繰り返し着脱を可
能にするための弾性と共に、把持力を維持するた
めの適度な剛性とが必要であり、その素材として
はこれまでステンレス鋼もしくはリン青銅の薄板
が使用されている。
〔発明が解決しようとする課題〕
しかしながら、この条件を同時に満たすことは
相反する性質を同一部材で充足することであつて
上記従来の素材では困難である。このため、把持
具の弾発力を利用して管体の着脱を行なう前記従
来例の管継手では着脱性が優先され、耐久性等の
点についてはある程度犠牲にされていた。その結
果、管体の繰返し着脱あるいは管体の引抜方向へ
の過度な張力などにより把持具が永久変形しやす
く、特に、産業用ロボツトなどの可動する機器に
使用した場合には、結合部分に張力、ねじれ、衝
撃等の負荷がかかることにより、把持具が破損し
やすいという問題点があつた。
そこで、本発明者はこれら従来技術の問題点に
鑑み鋭意検討したところ、この種の管継手におけ
る把持具の素材として、ある種の金属が最適であ
ることに着目し、本発明に到達した。即ち、この
発明は、着脱性及び耐久性に優れた管継手の提供
をその目的とする。
〔課題を解決するための手段〕
上記目的を達成するために、この発明による管
継手は、中空部に管体を嵌入可能な継手本体、こ
の継手本体内にあつて管体外周に喰い込み把持す
るための複数の爪片を内周縁側に有する環状の把
持具、この把持具近傍にあつてその先端部で把持
具の爪片を継手本体内壁側へ押し倒すことにより
爪片の管体外周面への喰い込みを解除する開放
筒、及び前記継手本体の中空部に接触係止されて
嵌入された管体の外周に接して封止保持するシー
ルリングを具備する管継手において、前記把持具
は、ベリリウム銅からなり、時効硬化処理されて
いることを特徴としている。
〔作用〕
継手本体内にあつて管体外周に喰い込んでその
管体を把持する環状の把持具は、ベリリウム銅か
らなり、さらにベリリウム銅は時効硬化処理され
ている。この時効硬化処理により、把持具の靱性
が大幅に高まり、適度な弾性を保持したままその
機械的強度が向上する。このため、ねじれや張力
などの外力が負荷された場合にも、把持具には永
久変形や破損が生じ難く、従来のステンレス鋼や
リン青銅で形成されたものに比べてその寿命が大
きく延びる。また、弾性が残つているから、管体
挿入時及び開放筒押し込み時における把持具の爪
片の曲げ抵抗の増加がわずかであり、このため着
脱性の低下はほとんどみられない。
〔実施例〕
第１図は、この発明による管継手の一実施例を
示す部分縦断側面図であつて、図示の管継手１
は、継手本体２、把持具３、押え筒体４、開放筒
５、及びシールリング６を備えて構成されてい
る。
継手本体２は、その内壁面に二つの段部２ａ，
２ｂが形成されると共に、これらの二つの段部２
ａ，２ｂの間にはシールリング６を受け入れる環
状溝２ｃが設けられ、さらに開口端側には押え筒
体４を嵌着固定するための係合部２ｄが形成され
ている。
押え筒体４は、一方の端部外周に前記継手本体
２の係合部２ｄと係合する環状凸部４ａが設けら
れ、この環状凸部４ａの部分を継手本体２の係合
部２ｄへ圧入する等により継手本体２内に嵌着固
定される。
把持具３は時効硬化処理されたベリリウム銅か
らなり、第２図及び第３図に最も詳細に示すよう
に、歯付座金状の形状を有していて、その円環状
の基部３ａの内周縁側には所定間隔を保つて中心
方向へ突出し且つ管体の嵌入方向へ傾斜した複数
の爪片３ｂが設けられ、その先端部分がエツジ３
Ｃとなつている。そして、この把持具３は押え筒
体４の端面と継手本体２の段部２ａとの間に回動
可能に介装されている。ここで、把持具３は、ベ
リリウム銅の薄板を所定形状に打ち抜いた後、時
効硬化処理を行なうことによつて得られる。これ
により、把持具３の靭性が著しく高まる。なお、
時効硬化処理を行なう際の温度、時間等の条件に
より、処理された把持具の機械的特性が大きく異
なるので、処理条件は管継手に用いたときの管体
の引抜強度、着脱性、及び耐久性のバランスを考
えて適宜選択される。
開放筒５は、押え筒体４に摺動可能に内嵌した
ときに把持具３に臨む側の端部に斜面５ａが形成
され、他端にはこの開放筒５を継手本体内へ押し
込む時の押圧部となるフランジ５ｂが設けられて
いる。
シールリング６はＯリングであつて、継手本体
２の環状溝２ｃに嵌入され、管体Ｔが継手本体２
内へ嵌入されたときに、継手本体２の内壁面と管
体Ｔ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
ば断面Ｕ字形等の他の形状であつてもよい。
このように構成された管継手１に管体Ｔを装着
するには、管体Ｔを開放筒５内へ嵌入する。嵌入
につれて管体Ｔは、その先端部がまず初めに把持
具３の爪片３ｂに当接すると共に、その弾性に抗
して爪片３ｂを継手本体２の内壁面へ押拡し、次
いでシールリング６の内周面に摺接しつつ進入
し、継手本体２内の段部２ｂに当接する状態とな
つて管体Ｔは継手本体２に装着される。この状態
においては、把持具３の爪片３ｂがその弾性によ
つて管体Ｔに圧接しているので、管体Ｔを抜き出
そうとすると、爪片３ｂの先端が管体Ｔへ喰い込
み勝手に作用し、抜き出しを阻止することによつ
て管体Ｔを強固に保持する。
次に、時効硬化処理を施したベリリウム銅から
なる把持具を用いる本発明の管継手と、比較例と
してリン青銅（比較例１）及びステンレス鋼（比
較例２）からなる把持具を用いた従来の管継手に
ついて、把持具の耐久性を評価するため、下記の
試験方法により管継手の把持具に繰り返し負荷を
与え、把持具の破損、管体の抜けなどの不具合い
が生じるまでの回数を測定した結果が表１であ
る。なお、把持力の指標となる引抜強度について
も併せて記載する。
[Industrial Field of Application] The present invention relates to a pipe joint used for a pipe body made of plastic or rubber, and more particularly to a pipe joint that allows the pipe body to be repeatedly attached and detached and is particularly durable. [Prior Art] In recent years, pipe fittings that can be used to connect flexible pipe bodies such as plastic tubes or rubber tubes, and which can be easily attached and detached without using tools, have become easy to handle. It is widely used in various devices. Typical pipe joints of this type include, for example, the Jitsukaisho
As shown in No. 60-14386, a plurality of claws that are inclined in the direction of insertion of the tube and are gripped by biting into the outer circumferential surface of the tube are arranged at equal intervals toward the center. The pipe is secured by a gripping tool and an open tube that is located near the gripping tool and pushes down the claws of the gripping tool toward the inner wall of the joint body when the pipe is detached, and the biting portions of the claws are separated from the outer circumferential surface of the pipe. There is a type of pipe fitting in which the body can be attached and detached, and with this type of pipe fitting, the pipe body is fixed to the joint body simply by inserting the pipe body into the joint body, and in this fixed state, the open tube is pushed in the direction in which the pipe body is inserted. In particular, the tube body can be removed from the joint body. In such pipe fittings, the elastic force of the material of the gripping tool is used to grip and release the pipe, so the gripping tool has both elasticity and elasticity to enable repeated attachment and detachment. , appropriate rigidity is required to maintain gripping force, and the material used so far has been stainless steel or phosphor bronze thin plates. [Problems to be Solved by the Invention] However, satisfying these conditions simultaneously means satisfying contradictory properties with the same member, which is difficult with the above-mentioned conventional materials. For this reason, in the conventional pipe joints described above, in which the tube body is attached and detached using the elastic force of the gripping tool, attaching and detaching performance is given priority, and durability and other aspects are sacrificed to some extent. As a result, the gripping tool is susceptible to permanent deformation due to repeated attachment and detachment of the tubular body or excessive tension in the direction of pulling out the tubular body.Especially when used in movable equipment such as industrial robots, tension may be applied to the connecting part. There was a problem in that the gripping tool was easily damaged due to loads such as twisting, impact, etc. Therefore, the inventor of the present invention made extensive studies in view of these problems of the prior art, and found that a certain type of metal is optimal as the material for the gripping tool in this type of pipe joint, and arrived at the present invention. That is, an object of the present invention is to provide a pipe joint with excellent attachment/detachability and durability. [Means for Solving the Problems] In order to achieve the above object, a pipe joint according to the present invention includes a joint body into which a pipe body can be inserted into a hollow portion, and a pipe fitting which is provided in the joint body and is gripped by biting into the outer periphery of the pipe body. An annular gripping tool that has a plurality of claws on the inner circumferential edge side for the purpose of removing the claws from the outside of the tubular body by pushing down the claws of the gripping tool toward the inner wall of the joint body at the tip of the gripping tool. In the pipe joint, the pipe joint is equipped with an open cylinder for releasing the biting into the joint body, and a seal ring that contacts and holds the outer circumference of the fitted pipe body in contact with the hollow part of the joint body, and the gripping tool is It is characterized by being made of beryllium copper and subjected to age hardening treatment. [Function] The annular gripper, which is located within the joint body and bites into the outer periphery of the tube to grip the tube, is made of beryllium copper, and the beryllium copper is subjected to age hardening treatment. This age hardening treatment significantly increases the toughness of the gripper and improves its mechanical strength while maintaining appropriate elasticity. Therefore, even when external forces such as torsion or tension are applied, the gripping tool is less likely to be permanently deformed or damaged, and its lifespan is greatly extended compared to conventional gripping tools made of stainless steel or phosphor bronze. In addition, since elasticity remains, there is only a slight increase in the bending resistance of the claws of the gripping tool when inserting the tube and pushing the open tube, and therefore there is almost no deterioration in attaching and detaching properties. [Embodiment] FIG. 1 is a partial longitudinal sectional side view showing an embodiment of a pipe joint according to the present invention, and the illustrated pipe joint 1
is composed of a joint body 2, a gripping tool 3, a holding cylinder 4, an open cylinder 5, and a seal ring 6. The joint body 2 has two stepped portions 2a on its inner wall surface.
2b is formed, and these two steps 2
An annular groove 2c for receiving the seal ring 6 is provided between a and 2b, and an engaging portion 2d for fitting and fixing the presser cylinder 4 is formed on the open end side. The presser cylinder 4 is provided with an annular protrusion 4a on the outer periphery of one end that engages with the engagement part 2d of the joint body 2, and the annular protrusion 4a is connected to the engagement part 2d of the joint body 2. It is fitted and fixed into the joint body 2 by press-fitting or the like. The gripping tool 3 is made of age-hardened beryllium copper, and has a toothed washer shape, as shown in the most detail in FIGS. A plurality of claw pieces 3b are provided on the edge side at predetermined intervals, protrude toward the center, and are inclined toward the insertion direction of the tube body, and the tip portions of the claw pieces 3b are provided at the edge 3.
It has become C. The gripping tool 3 is rotatably interposed between the end surface of the presser cylinder 4 and the stepped portion 2a of the joint body 2. Here, the gripping tool 3 is obtained by punching a thin plate of beryllium copper into a predetermined shape and then subjecting it to an age hardening treatment. This significantly increases the toughness of the gripper 3. In addition,
The mechanical properties of the treated gripping tool vary greatly depending on the conditions such as temperature and time during age hardening treatment. They are selected appropriately considering the gender balance. When the open tube 5 is slidably fitted into the presser cylinder 4, a slope 5a is formed at the end facing the gripping tool 3, and at the other end, when the open tube 5 is pushed into the joint body, a slope 5a is formed. A flange 5b serving as a pressing portion is provided. The seal ring 6 is an O-ring and is fitted into the annular groove 2c of the joint body 2, so that the tube body T is inserted into the joint body 2.
When inserted into the interior, airtightness is maintained by elastically contacting the inner wall surface of the joint body 2 and the outer circumferential surface of the tube body T. Note that the seal ring may have other shapes, such as a U-shaped cross section, for example. To attach the tube T to the pipe joint 1 configured in this way, the tube T is inserted into the open tube 5. As the tubular body T is fitted, its tip first comes into contact with the claws 3b of the gripping tool 3, and the claws 3b are pushed out against the elasticity of the claws 3b toward the inner wall surface of the joint body 2, and then the seal ring The tubular body T is installed in the joint body 2 by entering the tube while slidingly contacting the inner circumferential surface of the joint body 6 and coming into contact with the stepped portion 2b in the joint body 2. In this state, the claws 3b of the gripper 3 are in pressure contact with the tube T due to their elasticity, so when you try to pull out the tube T, the tips of the claws 3b bite into the tube T. It acts on its own and firmly holds the tube T by preventing it from being pulled out. Next, we will discuss the pipe fitting of the present invention using a gripping tool made of age-hardened beryllium copper, and as a comparative example, a conventional pipe fitting using a gripping tool made of phosphor bronze (Comparative Example 1) and stainless steel (Comparative Example 2). In order to evaluate the durability of the gripping tool for pipe fittings, the following test method is used to repeatedly apply a load to the gripping tool of the pipe fitting and calculate the number of times it takes for problems such as breakage of the gripping tool or failure of the pipe to come off. Table 1 shows the measurement results. In addition, the pull-out strength, which is an index of the gripping force, will also be described.
直径10mmのナイロンチユーブ（自由長1000mm）
の両端に管継手を取り付け、これを60mmの曲げ半
径でＵ字状に曲げた状態で床面と平行に配置し、
管継手の一方を固定する。そして、他方の管継手
をシリンダーに連結し、チユーブ内に8Kgf／cm2
の圧力をかけながらこのシリンダーを上下運動さ
せ、シリンダーの上死点もしくは下死点でチユー
ブ内の圧力を開放することにより、チユーブと把
持具との結合部分に衝撃が加わるようにする。
Nylon tube with a diameter of 10 mm (free length 1000 mm)
Attach pipe joints to both ends of the pipe, bend it into a U-shape with a bending radius of 60 mm, and place it parallel to the floor.
Secure one end of the pipe fitting. Then, connect the other pipe joint to the cylinder and apply 8Kgf/cm 2 inside the tube.
By moving this cylinder up and down while applying pressure, and releasing the pressure inside the tube at the top dead center or bottom dead center of the cylinder, an impact is applied to the joint between the tube and the gripping tool.
直径10mmのナイロンチユーブ（自由長1100mm）
の両端に管継手を取り付け、一方の管継手を180
の範囲で交互に両方向に回転させながら左右に移
動させ、それに合わせて他方の管継手を上下運動
させる。この場合、チユーブ内には所定間隔で
8Kgf／cm2の圧力をかける。
Nylon tube with a diameter of 10 mm (free length 1100 mm)
Attach pipe fittings to both ends of the
Move the pipe left and right while alternately rotating in both directions within the range of , and move the other pipe joint up and down accordingly. In this case, inside the tube there are
Apply a pressure of 8Kgf/ cm2 .
直径10mmのナイロンチユーブ（自由長300mm）
の両端に管継手を取り付けてこれを垂直方向に配
し、下端側の管継手が回らないようにして上端側
の管継手を180゜の範囲で交互に両方向に回転させ
る。なお、下端側の管継手には錘を取り付けて結
合部分に引張り荷重がかかるようにすると共に、
チユーブ内には所定間隔で8Kgf／cm2の圧力をか
ける。
Nylon tube with a diameter of 10 mm (free length 300 mm)
Attach pipe joints to both ends of the pipe and place them vertically, and rotate the upper pipe joint alternately in both directions within a range of 180° while preventing the lower end pipe joint from rotating. In addition, a weight is attached to the lower end pipe joint to apply a tensile load to the joint, and
A pressure of 8 kgf/cm 2 is applied inside the tube at predetermined intervals.
以上説明したように、この発明にあつては、管
体の外周面に喰い込むことによつて把持する複数
の爪片が中心に向かつて所定間隔で設けられた環
状の把持具と、この把持具の近傍にあつて管体離
脱時に前記把持具の爪片に当接して該爪片の喰い
込み部を管体外周面より離脱する開放筒とにより
管体の離脱を行なう型式の管継手において、把持
具はベリリウム銅からなり、時効効硬化処理され
ている。この時効硬化処理により、把持具は、適
度な弾性を保持したままその機械的強度が増すの
で、着脱性の大きな低下を伴うことなく、ねじれ
や張力などの外力に対する耐疲労性が高まり、永
久変形や破損が生じにくくなる。したがつて、管
継手としての耐久性が大幅に向上するから、例え
ば産業用ロボツトなどの可動部分に使用すると効
果的である。
なお、この発明は上記実施例に限定されるもの
ではなく、例えば把持具を交互に切れ込みの入つ
た形状にしたり、あるいは管継手内の他の部材の
形状、及びその位置の変更、さらに他の弾性材料
と組み合わせて使用するなど、この発明の技術思
想内での種々の変更はもちろん可能である。
As explained above, the present invention includes a ring-shaped gripping device in which a plurality of claws that grip the tube body by biting into the outer circumferential surface thereof are provided at predetermined intervals toward the center; In a pipe joint of a type in which the pipe body is removed by an open tube located near the pipe body, which abuts the claws of the gripping tool and detaches the biting portions of the claws from the outer circumferential surface of the pipe body when the pipe body is removed. , the gripping tool is made of beryllium copper and is age hardened. This age-hardening treatment increases the mechanical strength of the gripping tool while maintaining appropriate elasticity, so it increases fatigue resistance against external forces such as twisting and tension, and permanently deforms, without significantly reducing ease of attachment and detachment. and damage is less likely to occur. Therefore, the durability of the pipe joint is greatly improved, and it is therefore effective to use it in movable parts such as industrial robots. Note that the present invention is not limited to the above-mentioned embodiments, and may include, for example, making the gripping tool have a shape with alternating notches, or changing the shape and position of other members in the pipe joint, and other modifications. Of course, various modifications within the technical idea of this invention are possible, such as using it in combination with an elastic material.
第１図はこの発明による管継手の一実施例を示
す部分縦断側面図、第２図は第１図実施例の管継
手において用いられる把持具の平面図、第３図は
第２図のＡ−A′断面図である。
２：継手本体、３：把持具、４：押え筒体、
５：開放筒、６：シールリング。
FIG. 1 is a partial longitudinal sectional side view showing an embodiment of the pipe joint according to the present invention, FIG. 2 is a plan view of a gripping tool used in the pipe joint of the embodiment shown in FIG. -A' sectional view. 2: Joint body, 3: Gripping tool, 4: Presser cylinder,
5: Open tube, 6: Seal ring.
Claims (1)
手本体内にあつて管体外周に喰い込み把持するた
めの複数の爪片を内周縁側に有する環状の把持
具、この把持具近傍にあつてその先端部で把持具
の爪片を継手本体内壁側へ押し倒すことにより爪
片の管体外周面への喰い込みを解除する開放筒、
及び前記継手本体の中空部に接触係止されて嵌入
された管体の外周に接して封止保持するシールリ
ングを具備する管継手において、前記把持具は、
ベリリウム銅からなり、時効硬化処理されている
ことを特徴とする管継手。1. A joint body into which a pipe body can be inserted into the hollow part, an annular gripping tool located inside the joint body and having a plurality of claws on the inner peripheral edge side for biting into the outer periphery of the pipe body and gripping the pipe body, and a ring-shaped gripping tool located in the vicinity of this gripping tool. an open cylinder which releases the claws from biting into the outer circumferential surface of the tube body by pushing the claws of the gripping tool toward the inner wall of the joint body with the tip thereof;
and a pipe joint comprising a seal ring that contacts and holds the outer periphery of the pipe body that is fitted into the hollow part of the joint body in a contact-locking manner, wherein the gripping tool includes:
A pipe joint that is made of beryllium copper and is age-hardened.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63156369A JPH028590A (en) | 1988-06-24 | 1988-06-24 | Pipe joint |
| KR1019890008574A KR940008641B1 (en) | 1988-06-24 | 1989-06-20 | Tube connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63156369A JPH028590A (en) | 1988-06-24 | 1988-06-24 | Pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH028590A JPH028590A (en) | 1990-01-12 |
| JPH0327796B2 true JPH0327796B2 (en) | 1991-04-17 |
Family
ID=15626245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63156369A Granted JPH028590A (en) | 1988-06-24 | 1988-06-24 | Pipe joint |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH028590A (en) |
| KR (1) | KR940008641B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444353B1 (en) * | 2001-08-23 | 2004-08-16 | 이중호 | Connector for water pipe |
| KR100937349B1 (en) * | 2007-09-07 | 2010-01-20 | (주) 파티마엔지니어링 | Expansion and contraction pipe that have joint department's waterproof structure |
| KR100943787B1 (en) * | 2009-08-28 | 2010-03-03 | 박규남 | The slide tighten type the pipe connection socket |
-
1988
- 1988-06-24 JP JP63156369A patent/JPH028590A/en active Granted
-
1989
- 1989-06-20 KR KR1019890008574A patent/KR940008641B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028590A (en) | 1990-01-12 |
| KR900000636A (en) | 1990-01-30 |
| KR940008641B1 (en) | 1994-09-24 |
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