JPH0544631Y2 - - Google Patents
Info
- Publication number
- JPH0544631Y2 JPH0544631Y2 JP3735988U JP3735988U JPH0544631Y2 JP H0544631 Y2 JPH0544631 Y2 JP H0544631Y2 JP 3735988 U JP3735988 U JP 3735988U JP 3735988 U JP3735988 U JP 3735988U JP H0544631 Y2 JPH0544631 Y2 JP H0544631Y2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- ring
- tube
- joint
- 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 - Lifetime
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 53
- 239000000057 synthetic resin Substances 0.000 claims description 53
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Joints With Sleeves (AREA)
- 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）
本考案は、合成樹脂製管の結合構造の改良に係
り、更に詳しくは合成樹脂製管の膨張収縮に対応
できるようにし且つ作業性を良くしたことを特徴
とする合成樹脂製管の結合構造に関する。[Detailed description of the invention] (Field of industrial application) The present invention relates to an improvement of the joint structure of synthetic resin pipes, and more specifically, to make it compatible with the expansion and contraction of synthetic resin pipes and to improve workability. The present invention relates to a joint structure for synthetic resin pipes, characterized by the following.
（従来の技術と課題）
畑地灌漑用スプリンクラー配管あるいは土木建
設工事の仮設配管にポリエチレン管のような合成
樹脂製管が使用されている。従来の合成樹脂製管
の結合にはフランジ接合法、冷間接合法
（JWWA）等がある。農業関係での使用方法は地
表での配管作業となり取外して他の場所へ移動し
再度セツトして使用する場合が多い。前記接合方
法は組立分解作業が煩雑なことそして分解時の共
廻りの発生があり、又部品の変形、合成樹脂製管
に傷が発生する等の問題があり再度の使用は困難
であつた。そこで組立分解の容易な溶着型ワンタ
ツチ管継手が開発された。これは継手の雄、雌の
一方に例えばポリエチレン管を溶着する必要があ
ること、継手に遊びが無く気候の寒暖の差による
ポリエチレン管の膨張収縮に対応出来ない等の問
題がある。上記に鑑み先に本考案者等が実願昭61
−166712、実願昭62−58508として開示している。
本考案はさらに改良したもので、部品点数が少な
くしかも組み立て分解が容易で、合成樹脂製管の
膨張収縮にも対応できるような合成樹脂製管の結
合構造を提供することを目的とするものである。(Prior Art and Issues) Synthetic resin pipes such as polyethylene pipes are used for sprinkler pipes for field irrigation or temporary pipes for civil engineering construction work. Conventional methods for joining synthetic resin pipes include the flange joining method and the cold joint method (JWWA). When used in agriculture, piping work is often done on the ground, which means that it is removed, moved to another location, and then reinstalled and used. The above joining method has problems such as complicated assembly and disassembly work, occurrence of co-rotation during disassembly, deformation of parts, and damage to synthetic resin tubes, making it difficult to use them again. Therefore, a welded type one-touch pipe joint was developed that is easy to assemble and disassemble. This has problems, such as the need to weld, for example, a polyethylene pipe to one of the male and female joints, and the lack of play in the joint, making it impossible to cope with the expansion and contraction of the polyethylene pipe due to differences in temperature. In view of the above, the inventors of the present application
-166712, disclosed as Utility Model Application No. 62-58508.
The present invention is a further improvement, and aims to provide a joint structure for synthetic resin pipes that has a small number of parts, is easy to assemble and disassemble, and can handle the expansion and contraction of synthetic resin pipes. be.
（課題を解決するための手段） 本考案を実施例で説明する。(Means for solving problems) The present invention will be explained with examples.
第１図及び第２図に示すように、一方の結合部
は、継手本体１とラツチ環２と接続されようとす
る合成樹脂製管３とからなる。継手本体１は、そ
の端部内周側に環状の溝４を有し、この溝４には
Ｕ型のパツキン５が配設される。該Ｕ型パツキン
５は水圧が増すに従い水密性も増すようになる。 As shown in FIGS. 1 and 2, one of the coupling parts consists of a joint body 1, a latch ring 2, and a synthetic resin pipe 3 to be connected. The joint body 1 has an annular groove 4 on the inner peripheral side of its end, and a U-shaped packing 5 is disposed in this groove 4. The watertightness of the U-shaped gasket 5 increases as the water pressure increases.
継手本体１の端部外周壁面６にフツク係合溝部
７を形成する。フツク係合溝部７は好ましくは対
向して複数個設けられる。 A hook engaging groove portion 7 is formed in the outer peripheral wall surface 6 of the end portion of the joint body 1. Preferably, a plurality of hook engaging grooves 7 are provided facing each other.
第３図に示すように、継手本体１の端部外周面
に円周方向に延在する第１の凸部８と該第１の凸
部８の一方の端部から継手本体１の他端側へとそ
の軸線方向に延在する第２の凸部９と、他方の端
部から該第２の凸部９とは略平行関係にあり且つ
第２の凸部９より短い第３の凸部１０とより構成
される。 As shown in FIG. 3, there is a first convex portion 8 extending in the circumferential direction on the outer peripheral surface of the end of the joint body 1, and from one end of the first convex portion 8 to the other end of the joint body 1. A second protrusion 9 extending to the side in the axial direction and a third protrusion that is substantially parallel to the second protrusion 9 from the other end and shorter than the second protrusion 9. It consists of a section 10.
第３図に示すように、使用中フツク１１のフツ
ク係合溝部７からの離脱を防止させるため、第３
の凸部１０の前端との間に間隔t0をもつて凸部１
２を設け、該間隔t0をフツク１１の係合部厚さt1
より僅かに大なるものとすることにより、フツク
１１が使用中に振動等により溝部７から離脱し難
くすることができる。又、フツク１１のＵ字状の
底部ａの長さは継手本体１の第１の凸部８の巾ｂ
よりも長くすることにより継手本体１とラツチ環
２の間に遊び１８を設ける。 As shown in FIG. 3, in order to prevent the hook 11 from coming off the hook engaging groove 7 during use,
The protrusion 1 with a distance t 0 between the front end of the protrusion 10 and the front end of the protrusion 1
2 is provided, and the distance t 0 is the thickness t 1 of the engaging part of the hook 11
By making it slightly larger, the hook 11 can be made difficult to separate from the groove 7 due to vibration or the like during use. Also, the length of the U-shaped bottom a of the hook 11 is equal to the width b of the first protrusion 8 of the joint body 1.
By making the length longer than that, play 18 is provided between the joint body 1 and the latch ring 2.
合成樹脂製管３は、該合成樹脂製管３の端部内
面に該合成樹脂製管３の内径よりも大きい外径を
有するコア１３を圧入することにより拡管し段差
１４を形成する。 The synthetic resin tube 3 is expanded to form a step 14 by press-fitting a core 13 having an outer diameter larger than the inner diameter of the synthetic resin tube 3 into the inner surface of the end portion of the synthetic resin tube 3.
ラツチ環２は、その一端に前記継手本体１のフ
ツク係合溝部７と係合するフツク１１を有し、そ
の他端側の内周側に環状の溝１５を有する。該溝
１５にはロツクリング１６とストツプリング１７
が配設され、ロツクリング１６と溝１５は遊合関
係になつている。ラツチ環２は合成樹脂製管３に
対し遊合関係になつており且つ回転自在である。
ラツチ環２のフツク１１は内周側に開いた断面が
略Ｕ字状をなし、第３図に示すように、フツク１
１を矢印Ａ方向に廻しながら第３の凸部１０側か
ら溝７に侵入させ、次いで、矢印Ｂ方向へ移動さ
せて第２及び第３の凸部９，１０間に配し、継手
本体１とラツチ環２とを着脱可能に係止させる。 The latch ring 2 has a hook 11 at one end that engages with the hook engaging groove 7 of the joint body 1, and an annular groove 15 on the inner circumferential side of the other end. A lock ring 16 and a stop ring 17 are installed in the groove 15.
is provided, and the lock ring 16 and the groove 15 are in a loose relationship. The latch ring 2 is in a loose relationship with the synthetic resin pipe 3 and is rotatable.
The hook 11 of the latch ring 2 has a substantially U-shaped cross section that opens toward the inner circumference, and as shown in FIG.
1 into the groove 7 from the third protrusion 10 side while rotating in the direction of arrow A, and then moved in the direction of arrow B and placed between the second and third protrusions 9 and 10, and the joint body 1 and the latch ring 2 are removably locked.
前記ロツクリング１６はほぼ真円にして断面角
型でありその外径は継手本体１側に面したラツチ
環２の貫通孔の直径よりも小さく反対側の貫通孔
の直径よりも大きい。又ストツプリング１７の装
着時の内径よりも大きい。ロツクリング１６の内
径は前記合成樹脂製管の拡管部の直径よりも小さ
い。ストツプリング１７は自由状態時は合口が広
がり、ストツプリングプライヤで合口を閉じてラ
ツチ環２の溝部１５に装着されロツクリング１６
のラツチ環２の溝部１５からの外れを防止する。
ロツクリング１６は前記拡管した合成樹脂製管３
の未拡管部に配置される。ラツチ環２の溝部１５
にロツクリング１６とストツプリング１７を装着
した後、合成樹脂製管３に該ラツチ環２を挿入
し、次いで合成樹脂製管３の端部内面にコア１３
を挿入し継手本体１に該合成樹脂製管３を挿入し
て合成樹脂製管３と継手本体１とをパツキン５に
より水密関係とさせる。次いでラツチ環２を継手
本体１方向に押しながら回転させフツク１１をフ
ツク係合溝部７に係合させ、ラツチ環２を戻す。 The lock ring 16 is approximately a perfect circle and has a rectangular cross section, and its outer diameter is smaller than the diameter of the through hole in the latch ring 2 facing the joint body 1 side and larger than the diameter of the through hole on the opposite side. It is also larger than the inner diameter of the stop ring 17 when it is installed. The inner diameter of the lock ring 16 is smaller than the diameter of the expanded portion of the synthetic resin tube. When the stop ring 17 is in a free state, the abutment widens, and when the abutment is closed with the stop ring pliers, the stop ring 17 is attached to the groove 15 of the latch ring 2 and the lock ring 16 is attached.
This prevents the latch ring 2 from coming off the groove 15.
The lock ring 16 is the expanded synthetic resin pipe 3.
It is placed in the unexpanded part of the tube. Groove 15 of latch ring 2
After attaching the lock ring 16 and stop ring 17 to the synthetic resin tube 3, the latch ring 2 is inserted into the synthetic resin tube 3, and then the core 13 is attached to the inner surface of the end of the synthetic resin tube 3.
is inserted, and the synthetic resin pipe 3 is inserted into the joint body 1, and the synthetic resin pipe 3 and the joint body 1 are brought into a watertight relationship by the packing 5. Next, the latch ring 2 is rotated while being pushed in the direction of the joint body 1, the hook 11 is engaged with the hook engaging groove 7, and the latch ring 2 is returned.
他方の結合部においては、前記と同様な継手本
体２の端面２０部分に半円状のスリツト２７によ
り区画される一つの合口部２１と該合口部２１を
閉じるための締め付け手段２２，２３例えばボル
ト及びナツトで締め付けることにより縮径されて
コア１３により端部が拡管された合成樹脂製管３
の未拡管部分を把持する環状の管把持部材１９が
一体に結合された構造である。 In the other joint, there is an abutment 21 defined by a semicircular slit 27 in the end surface 20 of the joint body 2 similar to the above, and tightening means 22, 23 for closing the abutment 21, such as bolts. and a synthetic resin tube 3 whose diameter is reduced by tightening with a nut and whose end is expanded by a core 13.
It has a structure in which an annular tube gripping member 19 that grips the unexpanded tube portion of the tube is integrally connected.
前記合口部２１をボルト２２及びナツト２３等
で締め付けることにより縮径されてコア１３によ
り端部が拡管された合成樹脂製管３の未拡管部分
例えば段差１４を把持する。ボルト及びナツトで
締め付けた場合の環状の管把持部材１９の内径は
前記合成樹脂製管３の拡管部の直径よりも小さ
い。ナツト２３を回転し締め付ける際にボルト２
２の共廻りを防止するためリブ２６を設けた。 By tightening the abutment portion 21 with bolts 22, nuts 23, etc., the unexpanded portion of the synthetic resin tube 3, which has been reduced in diameter and expanded at the end by the core 13, such as the step 14, is gripped. The inner diameter of the annular tube gripping member 19 when tightened with bolts and nuts is smaller than the diameter of the expanded portion of the synthetic resin tube 3. When rotating and tightening nut 23, tighten bolt 2.
A rib 26 is provided to prevent rotation of the two.
管把持部材１９の材質は軽量、耐食性、弾性等
を備えたアルミ合金等が好ましい。本体端面２０
からの突出部には合口２１を閉じた場合ねじれを
防止するためリブ２４，２５を設け補強する。合
成樹脂製管３は該合成樹脂製管３の端部内面に該
合成樹脂製管３の内径よりも大きい外径を有する
コア１３を圧入することにより拡管し段差１４を
形成する。拡管された合成樹脂製管３の端部を合
口２１が開いている環状の管把持部材１９の貫通
孔を通し継手本体１に挿入し、合口部２１をボル
ト２２及びナツト２３で締め付け環状の管把持部
材１９を合成樹脂製管３の未拡管部例えば段差１
４に固定する。 The material of the tube gripping member 19 is preferably an aluminum alloy or the like, which is lightweight, has corrosion resistance, elasticity, and the like. Body end face 20
In order to prevent twisting when the abutment 21 is closed, ribs 24 and 25 are provided on the protrusion from the abutment 21 for reinforcement. The synthetic resin tube 3 is expanded to form a step 14 by press-fitting a core 13 having an outer diameter larger than the inner diameter of the synthetic resin tube 3 into the inner surface of the end portion of the synthetic resin tube 3. Insert the end of the expanded synthetic resin tube 3 into the joint body 1 through the through hole of the annular tube gripping member 19 with the abutment 21 open, and tighten the abutment 21 with the bolt 22 and nut 23 to complete the annular tube. The gripping member 19 is attached to the unexpanded portion of the synthetic resin tube 3, for example, at the step 1.
Fixed at 4.
このように組立てられた合成樹脂製管の結合構
造に水圧が作用すると合成樹脂製管３を抜け方向
に動かす。 When water pressure acts on the joint structure of the synthetic resin tubes assembled in this way, the synthetic resin tube 3 is moved in the pulling direction.
一方の結合部においては以下のように作用す
る。 At one joint, the operation is as follows.
ロツクリング１６は合成樹脂製管３の段差１４
に食い込み耐抜け力を向上させる。又合成樹脂製
管３が膨張した場合継手本体１とラツチ環２の間
に遊び１８があるため合成樹脂製管３の継手本体
２の内部への動きに対応できる。又、水圧を解除
し組立を分解する場合、従来の継手ではラツチ環
とロツクリングと合成樹脂製管が強固に固定され
るため、ラツチ環を回転するのに伴い合成樹脂製
管も回転し、合成樹脂製管の他方の継手も外れる
という共廻りが発生することがあるが、本考案の
継手では遊び１８があるためラツチ環３とロツク
リング１６は容易に離れ前記のような共廻りは発
生しない。 The lock ring 16 is a step 14 of the synthetic resin pipe 3.
It bites into and improves the resistance to pull-out. Furthermore, when the synthetic resin pipe 3 expands, there is a play 18 between the joint body 1 and the latch ring 2, so that movement of the synthetic resin pipe 3 into the joint body 2 can be accommodated. In addition, when releasing the water pressure and disassembling the assembly, in conventional joints, the latch ring, lock ring, and synthetic resin pipe are firmly fixed, so as the latch ring rotates, the synthetic resin pipe also rotates, and the synthetic resin pipe rotates as the latch ring rotates. Co-rotation may occur in which the other joint of the resin pipe also comes off, but in the joint of the present invention, since there is play 18, the latch ring 3 and lock ring 16 are easily separated, and such co-rotation does not occur.
他方の結合部においては以下のように作用す
る。 At the other joint, the operation is as follows.
環状の管把持部材１９の継手本体２の端面側の
エツジ部が合成樹脂製管３の段差１４に食い込み
耐抜け力を向上させる。又合成樹脂製管３が膨張
した場合、前記した一方の結合部における継手本
体１とラツチ環２の間に遊び１８があるため合成
樹脂製管３の継手本体内部への動きに対応でき
る。又、水圧を解除し組立を分解する場合、従来
の継手ではラツチ環とロツクリングと合成樹脂管
が強固に固定されるため、ラツチ環を回転するの
に伴い合成樹脂製管も回転し、合成樹脂製管の他
方の継手も外れるという共廻りが発生することが
あるが、本考案の結合構造ではボルト及びナツト
を外すことにより容易に合成樹脂製管３を継手本
体１より外すことができ共廻りは発生しない。 The edge portion of the annular tube gripping member 19 on the end surface side of the joint body 2 bites into the step 14 of the synthetic resin tube 3 to improve the pullout resistance. Furthermore, when the synthetic resin tube 3 expands, the movement of the synthetic resin tube 3 into the interior of the joint body can be accommodated because there is a play 18 between the joint body 1 and the latch ring 2 at one of the joints. In addition, when releasing the water pressure and disassembling the assembly, in conventional joints, the latch ring, lock ring, and synthetic resin pipe are firmly fixed, so as the latch ring rotates, the synthetic resin pipe also rotates, and the synthetic resin pipe rotates as the latch ring rotates. Co-rotation may occur in which the other joint of the manufactured pipe also comes off, but with the joint structure of the present invention, the synthetic resin pipe 3 can be easily removed from the joint body 1 by removing the bolts and nuts, and co-rotation can occur. does not occur.
（効 果）
本考案の合成樹脂製管の結合構造により配管作
業は非常に容易になり、且つ気候の寒暖の差によ
る合成樹脂製管の膨張収縮に対応することができ
ると共に共廻りが発生することがない。又部品点
数がすくなく安価になる。(Effects) The joint structure of the synthetic resin pipes of this invention makes piping work very easy, and it can cope with the expansion and contraction of the synthetic resin pipes due to differences in temperature and temperature, and also prevents synergism. Never. In addition, the number of parts is reduced and the cost is reduced.
図は本考案の一実施例を示すものである。第１
図は第２図のＸ−Ｘ線部分側断面図、第２図は合
口部を有する環状の管把持部材側の平面図、第３
図はフツク係合溝部の概略図、第４図は継手本体
の斜視図である。
図中；１……継手本体、２……ラツチ環、３…
…合成樹脂製管、４……継手本体の環状溝、５…
…パツキン、６……継手本体の端部外周壁面、７
……フツク係合溝部、８……第１の凸部、９……
第２の凸部、１０……第３の凸部、１１……フツ
ク、１３……コア、１４……段差、１５……ラツ
チ環の内周溝、１６……ロツクリング、１７……
ストツプリング、１８……遊び、１９……環状の
管把持部材、２０……継手本体の端面、２１……
合口部、２２，２３……締め付け手段（ボルト及
びナツト等）。
The figure shows an embodiment of the present invention. 1st
The figure is a partial side sectional view taken along the line X-X in Figure 2, Figure 2 is a plan view of the annular tube gripping member side having the abutment, and Figure 3
The figure is a schematic view of the hook engaging groove, and FIG. 4 is a perspective view of the joint body. In the figure; 1... joint body, 2... latch ring, 3...
...Synthetic resin pipe, 4...Annular groove of the joint body, 5...
...Packskin, 6...End peripheral wall surface of joint body, 7
...Hook engaging groove portion, 8...First convex portion, 9...
Second protrusion, 10...Third protrusion, 11...Hook, 13...Core, 14...Step, 15...Inner peripheral groove of latch ring, 16...Lock ring, 17...
Stop ring, 18... play, 19... annular tube gripping member, 20... end face of joint body, 21...
Joint portion, 22, 23... tightening means (bolts, nuts, etc.).
Claims (1)
と水密接触するパツキン５を端部内周の環状溝４
内に備え且つ端部外周壁面６にフツク係合溝部７
を有する継手本体１と、合成樹脂製管３の端部を
拡管させるコア１３と、前記拡管された合成樹脂
製管３の外径より小さい内径を有し、該合成樹脂
製管３の未拡管部分に配設されたロツクリング１
６を収容する内周溝１５を有し、前記継手本体１
のフツク係合溝部７と着脱可能に係合するフツク
１１を有するラツチ環２と、前記ラツチ環２の内
周溝１５に収容され、前記ロツクリング１６の前
記内周溝１５から抜け出しを阻止する割型ストツ
プリング１７とを有し、他方の結合部が、合成樹
脂製管３の端部外周面と水密接触するパツキン５
を端部内周の環状溝４内に備えた継手本体１の端
面２０部分に、一つの合口部２１と該合口部２１
を閉じる為の締め付け手段２２，２３を有し該締
め付け手段２２，２３で締め付けることにより縮
径されてコア１３により端部が拡管された合成樹
脂製管３の未拡管部分を把持する環状の環把持部
材１９が一体に結合された構造としたことを特徴
とする合成樹脂製管の結合構造。 One joint part connects the gasket 5, which is in watertight contact with the outer circumferential surface of the end of the synthetic resin pipe 3, to the annular groove 4 on the inner circumference of the end.
A hook engaging groove portion 7 is provided inside and is provided on the outer peripheral wall surface 6 of the end portion.
a core 13 for expanding the end of the synthetic resin tube 3; and a core 13 having an inner diameter smaller than the outer diameter of the expanded synthetic resin tube 3, and an unexpanded tube of the synthetic resin tube 3. Lock ring 1 arranged in the part
6, and has an inner peripheral groove 15 for accommodating the joint body 1.
a latch ring 2 having a hook 11 that removably engages with the hook engagement groove 7 of the latch ring 2; The packing 5 has a mold stop ring 17, and the other connecting portion is in watertight contact with the outer circumferential surface of the end of the synthetic resin pipe 3.
In the end face 20 portion of the joint body 1, which is provided in the annular groove 4 on the inner circumference of the end, one abutment part 21 and the abutment part 21 are provided.
An annular ring that grips the unexpanded portion of the synthetic resin tube 3 whose diameter has been reduced by tightening with the tightening means 22 and 23 and whose end has been expanded by the core 13. A joint structure for synthetic resin tubes, characterized in that a gripping member 19 is integrally joined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3735988U JPH0544631Y2 (en) | 1988-03-22 | 1988-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3735988U JPH0544631Y2 (en) | 1988-03-22 | 1988-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01140096U JPH01140096U (en) | 1989-09-25 |
| JPH0544631Y2 true JPH0544631Y2 (en) | 1993-11-12 |
Family
ID=31263941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3735988U Expired - Lifetime JPH0544631Y2 (en) | 1988-03-22 | 1988-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544631Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753033Y2 (en) * | 1993-02-04 | 1995-12-06 | 株式会社日本プレカ | Plug-in type pipe fitting |
-
1988
- 1988-03-22 JP JP3735988U patent/JPH0544631Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01140096U (en) | 1989-09-25 |
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