JP7320207B2 - System to prevent forgetting to crimp press type pipe fittings - Google Patents
System to prevent forgetting to crimp press type pipe fittings Download PDFInfo
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- JP7320207B2 JP7320207B2 JP2020107323A JP2020107323A JP7320207B2 JP 7320207 B2 JP7320207 B2 JP 7320207B2 JP 2020107323 A JP2020107323 A JP 2020107323A JP 2020107323 A JP2020107323 A JP 2020107323A JP 7320207 B2 JP7320207 B2 JP 7320207B2
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- 238000002788 crimping Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 238000012790 confirmation Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 24
- 238000012544 monitoring process Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Description
本発明は、配管システムを構成するプレス式管継手の、かしめ忘れ防止システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for preventing forgetting to crimp a press type pipe joint that constitutes a piping system.
流体を金属配管内に流通させる配管システムにおいて、金属製の接続管のソケット部あるいは独立した管継手のソケット部に、金属製の被接続管を所定量差し込んだ状態で縮径加工を施して（かしめて）接続する、所謂プレス式管継手が多用されている。In a piping system that circulates a fluid in a metal pipe, diameter reduction is performed while a specified amount of metal pipe to be connected is inserted into the socket of a metal connecting pipe or the socket of an independent pipe joint ( A so-called press-type pipe joint, which is connected by crimping, is often used.
例えば特許第３４３６８２２号には、独立した金属管継手の両側に被接続管を接続できるプレス式管継手が開示されている。具体的な固定方法は、環状膨出部とその内部のＯリングを環状断面の金型で求心方向へ押して環状断面のまま縮径を施し、同時にその両側のソケット部の一部については求心方向に６角断面の金型で押して略６角断面となる縮径加工を施すことで、管継手と被接続管とが気密（液密）かつ強固にかしめられ、相互固定されるものである。For example, Japanese Patent No. 3436822 discloses a press type pipe joint that can connect connected pipes to both sides of an independent metal pipe joint. A specific fixing method is to press the annular bulging portion and the O-ring inside it in the centripetal direction with a mold having an annular cross section to reduce the diameter while maintaining the annular cross section, and at the same time, part of the socket portions on both sides are pressed in the centripetal direction. The pipe joint and the pipe to be connected are crimped air-tight (liquid-tight) and firmly, and fixed to each other.
しかしながら、配管システムの施工現場においては多くのかしめ作業を短時間で実施しなければならず、作業者、監督者が注意していてもかしめ忘れが発生してしまう問題があった。そこで、かしめ忘れ防止システムが特許第４９９９０１９号にて提案されている。However, at a construction site of a piping system, many crimping operations must be performed in a short period of time, and there is a problem that caulking may be forgotten even if the workers and supervisors are careful. Therefore, a system for preventing forgetting to crimp is proposed in Japanese Patent No. 4999019.
該システムは、プレス式管継手にＩＣタグ（ＲＦタグ）を付設しておき、専用のかしめ工具にＩＣタグと情報交換が可能なアタッチメントを取付けておいて、かしめ時の専用工具の稼働状況を履歴情報としてＩＣタグに書込むとともにホストコンピュータへ送信することで、かしめ忘れの発生を監視するシステムである。In this system, an IC tag (RF tag) is attached to the press-type pipe joint, and an attachment that can exchange information with the IC tag is attached to the dedicated crimping tool, and the operation status of the dedicated tool during crimping is monitored. This system monitors the occurrence of omissions in crimping by writing history information in an IC tag and sending it to a host computer.
そのような大掛かりで複雑なシステムによりかしめ忘れの監視は可能となるが、専用工具へのアタッチメントの増設や、それに関連する通信・制御インフラの稼働が必須となるため、施工コストの著しい増加を招き経済的ではない。また、施工後に目視でかしめ忘れが判るシステムではない。Although such a large-scale and complicated system enables monitoring of failure to crimp, it requires additional attachments to the dedicated tool and the operation of related communication and control infrastructure, which leads to a significant increase in construction costs. Not economical. In addition, it is not a system that visually recognizes omission of caulking after construction.
そこで本発明は、複雑で高価な通信・制御システムを必要とせず、経済的でかつ目視で全体確認が可能な、プレス式管継手のかしめ忘れ防止システムを提供する。SUMMARY OF THE INVENTION Accordingly, the present invention provides a system for preventing forgetting to crimp a press-type pipe joint, which does not require a complicated and expensive communication/control system, is economical, and allows visual confirmation of the entirety.
前述の課題を解決するために、本プレス式管継手のかしめ忘れ防止システムにおいては、環状膨出部に交差して取付環を係止し、取付環はかしめ時に金型によって容易に切断される特性であって、取付環には少なくとも識別情報を表示した表示体を取付けた。In order to solve the above-mentioned problems, in this system for preventing forgetting to crimp a press-type pipe joint, the mounting ring is locked across the annular bulge, and the mounting ring is easily cut by the die during crimping. As a characteristic feature, a display body displaying at least identification information was attached to the mounting ring.
表示体には更に、前記環状膨出部の内部にシール部材が収納されたことを表示する確認情報も表示されていると良い。It is preferable that confirmation information indicating that the sealing member has been accommodated inside the annular bulging portion is also displayed on the display.
また、表示体にはＲＦタグが収納あるいは貼付けされていると良い。Further, it is preferable that an RF tag is housed or attached to the display.
本発明のプレス式管継手によれば、かしめ時に専用工具の金型によって環状膨出部とその両側のソケット部の一部が縮径方向に押圧される際に、取付環が寸断され表示体が重りとなって共に離脱（落下）するので、かしめ施工が施されたことを状態として目視できる。逆に、施工完了エリアにおいて取付環および表示体が残存している（ぶら下がっている）プレス式管継手があれば、かしめ施工忘れ品として特定できる。According to the press-type pipe joint of the present invention, when the annular bulging portion and part of the socket portions on both sides thereof are pressed in the diameter-reducing direction by the mold of the special tool during crimping, the mounting ring is cut off and the display body is broken. becomes a weight and separates (falls) together, so that it is possible to visually confirm that the caulking work has been performed. Conversely, if there is a press-type pipe joint in which the mounting ring and the display body remain (hanging) in the construction completed area, it can be identified as a crimping-forgotten item.
また、表示体には、施工前に環状膨出部内にシール部材をセットした旨を記入することを定めておけば、かしめ忘れと共にシール部材のセット忘れもチェックできる。In addition, if it is determined that the seal member has been set in the annular bulging portion before construction, it is possible to check whether the seal member has been set or not.
更に、表示体にＲＦタグを収納あるいは貼付けておけば、目視情報と電子的監視情報とでクロスチェックができる。また、識別情報やかしめ作業の履歴情報などを保管でき、監視精度が向上するとともに保守情報としても有用となる。Furthermore, if an RF tag is housed or attached to the display, cross-checking can be performed between visual information and electronic monitoring information. In addition, it is possible to store identification information, crimping history information, and the like, which improves monitoring accuracy and is useful as maintenance information.
以下、本発明の望ましい実施形態について図１および図２を参照して説明する。Preferred embodiments of the present invention will now be described with reference to FIGS. 1 and 2. FIG.
図１に本発明の第１実施形態に係るプレス式管継手１の、接続加工前の被接続管３を内装セットした状態の斜視図（施工前状態）を示す。本実施形態は、独立した管継手（複数の被接続管を接続）ではなく、接続管に一体形成されたプレス式管継手である。接続管２の端部に周知の拡径手段によってソケット部４および環状膨出部６および先端部５が、一体形成されている。すなわち、本実施形態におけるソケット部４とは、被接続管３の先端挿入部との嵌合部分（ラップ範囲）に亘る拡径部分である。FIG. 1 shows a perspective view (pre-construction state) of a press-type pipe joint 1 according to the first embodiment of the present invention in which a pipe to be connected 3 before connection processing is set inside. This embodiment is not an independent pipe joint (for connecting a plurality of pipes to be connected), but a press type pipe joint integrally formed with a connecting pipe. A socket portion 4, an annular swelling portion 6, and a tip portion 5 are integrally formed at the end portion of the connection pipe 2 by a well-known diameter expanding means. That is, the socket portion 4 in the present embodiment is an enlarged diameter portion covering the fitting portion (lap range) of the connected tube 3 with the distal end insertion portion.
環状膨出部６の内面は略Ｕ字状あるいは略Ｖ字状の断面が環状に形成されていて、そこに円断面かつ環状の図示しないシールリング（Ｏリング）が内装されている。シールリングは環状膨出部と共にかしめ加工により縮径しシール機能を発揮する、不可欠な要素である。The inner surface of the annular bulging portion 6 is formed to have a substantially U-shaped or substantially V-shaped cross section in an annular shape, and a seal ring (O-ring) having a circular cross section and an annular shape (not shown) is fitted therein. The seal ring is an essential element that exhibits a sealing function by being reduced in diameter by caulking together with the annular bulging portion.
そして、環状膨出部６の外側には、環状の取付環７が環状膨出部６と交差するように（跨ぐように）係止されている。ここにおける係止とは、環状膨出部６およびソケット部４の外面に密着する形でも良いし隙間を持った緩い状態でも良いが、輸送時や施工セット時に環状膨出部６を超えて移動（係止外れ）しない程度の係止状態とする。An annular mounting ring 7 is locked to the outside of the annular bulging portion 6 so as to intersect (straddle) the annular bulging portion 6 . The locking here may be in a form of being in close contact with the outer surfaces of the annular bulging portion 6 and the socket portion 4, or may be in a loose state with a gap. It is in a locked state to the extent that it does not (unlock).
取付環７は弾性体でも被弾性体でも構わないが、後述するかしめ時に、金型によって容易に切断される特性が必須である。金属製でも樹脂製でもゴム製でも素材は問わないが、前述の切断特性と所望の耐劣化特性などが担保されていることが必要である。The mounting ring 7 may be either an elastic body or an elastic body, but it must have the property of being easily cut by a mold during caulking, which will be described later. It does not matter whether it is made of metal, resin, or rubber, but it is necessary that the above-mentioned cutting characteristics and desired deterioration resistance characteristics are ensured.
取付環７には、紐状の接続部８を介して表示体９が連結されている。表示体９には、プレス式管継手１や接続管２の識別情報や位置情報や加工・素材・履歴情報等が適宜記載されていると施工に寄与するが、特に必要がなければ品番などの最小限の識別情報だけでも構わない。いずれにせよ、施工後に接続管２と表示体９は分離されるので、施行後も表示が必要となるような情報を記載しておくことは適さない。表示体９はプラスチック製などの非磁性体であることが好ましいが、後述する離脱（脱落）が確実化される程度の質量を有することが好ましい。A display body 9 is connected to the mounting ring 7 via a string-like connecting portion 8 . If the identification information, position information, processing, material, history information, etc. of the press type pipe joint 1 and the connection pipe 2 are appropriately written on the display 9, it will contribute to construction. Even minimal identification information is sufficient. In any case, since the connection pipe 2 and the display body 9 are separated after construction, it is not suitable to describe information that needs to be displayed even after construction. The display member 9 is preferably made of a non-magnetic material such as plastic, but preferably has a mass sufficient to ensure detachment (falling off), which will be described later.
プレス式管継手の環状膨出部付近への取付環７、表示体９、接続部８の装着は、配管施工現場における施工直前でも可能ではあるが、継手を成形する前工程において継手形成直後に装着されることが望ましい。特に本実施形態のように、接続管２と一体的にプレス式管継手１が形成される場合においては専用工場でのプレハブ品となるので、該プレハブ工場におけるプレハブ加工の一環として装着されると効率が良い。Although it is possible to attach the mounting ring 7, the display body 9, and the connecting portion 8 to the vicinity of the annular bulging portion of the press-type pipe joint immediately before construction at the piping construction site, it is possible to attach the mounting ring 7, the display body 9, and the connection portion 8 immediately after forming the joint in the process prior to forming the joint. It is desirable to wear it. In particular, when the press type pipe joint 1 is integrally formed with the connecting pipe 2 as in this embodiment, it becomes a prefabricated product in a dedicated factory. Efficient.
このように、施工前にセットしてかしめ加工を施す。かしめ加工自体はプレス式管継手における周知の工具と工法を適用すれば良い。In this way, it is set and caulked before construction. For the caulking process itself, well-known tools and construction methods for press-type pipe joints may be applied.
図２に本発明の第１実施形態に係るプレス式管継手１の、かしめ加工後の状態の斜視図（施工後状態）を示す。なお、かしめ金型やそれを駆動する工具については、説明の簡略化のために図示を省略している。周知のように、かしめ加工により環状膨出部６の両側には複数のかしめ部（凹変形部）が現出している。そして、かしめ加工時にかしめ金型によって取付環７が１カ所あるいは複数カ所で切断されて非ループ状の取付環１１となり、一体である取付環１１、接続部８、表示体９ともにプレス式管継手１から離脱（落下）する。FIG. 2 shows a perspective view of the press-type pipe joint 1 according to the first embodiment of the present invention after caulking (post-construction state). Note that the caulking die and the tool for driving it are not shown for the sake of simplicity of explanation. As is well known, a plurality of crimped portions (concave deformation portions) appear on both sides of the annular swelling portion 6 by crimping. Then, the attachment ring 7 is cut at one or a plurality of locations by a caulking die during the caulking process to form a non-loop-shaped attachment ring 11, and the attachment ring 11, the connection portion 8, and the display body 9 that are integral with each other are press-type pipe joints. Leave (fall) from 1.
このように、かしめ施工が施されていれば、取付環１１、接続部８、表示体９の離脱（脱落）によって施工済みを確認できる。換言すれば、施工完了エリアにおいて取付環７および表示体９が残存している（ぶら下がっている）ようなプレス式管継手があれば、かしめ施工忘れ品として特定できる。すなわち、かしめ忘れを目視にて監視し防止できる。もちろん、施工後に一つ一つ監視せずとも、広い施工エリアのかしめ施工が全て終わった後にそのエリア全体を俯瞰すれば、表示体９が残存している（ぶら下がっている）プレス式管継手を容易に特定できるので、広域を一括で監視することもできる。As described above, if the caulking work has been performed, the completion of the caulking can be confirmed by detachment (dropping) of the mounting ring 11, the connecting portion 8, and the display body 9. In other words, if there is a press-type pipe joint in which the mounting ring 7 and the indicator 9 remain (hanging) in the construction completion area, it can be identified as a crimping-forgotten item. That is, omission of caulking can be visually monitored and prevented. Of course, even if you do not monitor each one after construction, if you look down on the entire area after all the caulking construction in a wide construction area, you can see the press-type pipe joint with the display body 9 remaining (hanging). Since it can be easily identified, it is also possible to monitor a wide area all at once.
なお、本実施形態では接続管２の端部にプレス式管継手１が一体形成された形態を例示したが、独立したプレス式管継手に適用しても構わない。すなわち、独立したプレス式管継手が接続管２と被接続管３とを接続する形態であるが、Ｙ字状やＴ字状など接続する管が３本以上でも構わない。いずれにせよ、かしめ部分すなわち各環状膨出部毎に、取付環、接続部、表示体から成るかしめ忘れ防止システムがセットされていることが肝要である。In this embodiment, the press type pipe joint 1 is integrally formed at the end of the connecting pipe 2, but it may be applied to an independent press type pipe joint. That is, an independent press-type pipe joint connects the connection pipe 2 and the connected pipe 3, but three or more pipes may be connected, such as in a Y shape or a T shape. In any case, it is essential that each crimping portion, that is, each annular bulge, is provided with a crimping prevention system consisting of a mounting ring, a connecting portion, and a display.
図示はしないが、本発明の第２実施形態に係るプレス式管継手１の監視システムを説明する。プレス式管継手の施工において、かしめ忘れに次いで問題となるのが、環状膨出部内へのシールリングのセット忘れである。これに対しても特開平４－２４８０９０公報によって電子的な監視システムが提案されてはいるが、上述のカシメ監視システムと同様に複雑な設備が必要となり非経済的である。Although not shown, a monitoring system for the press type pipe joint 1 according to the second embodiment of the present invention will be described. In the construction of press-type pipe joints, failure to set the seal ring in the annular bulging portion is the next major problem after failure to crimp. Japanese Laid-Open Patent Publication No. 4-248090 proposes an electronic monitoring system for this purpose, but it is uneconomical because it requires complicated equipment like the crimping monitoring system described above.
それに対して、本発明の第２実施形態においては、現場施工前、たいていは専用工場での継手形成時に、環状膨出部６内にシール部材を挿入セットしたことをその作業者が表示体に記載しておくものである。記載はチェック欄へのマーキングの形でも良い。On the other hand, in the second embodiment of the present invention, the operator displays on the display that the sealing member has been inserted and set in the annular bulging portion 6 before construction at the site, usually at the time of joint formation at a dedicated factory. It should be noted. The description may be in the form of marking in the check box.
この記載（チェック）によって、カシメ施工前に施行者がシールリングの事前セットを内部を覗くことなく確認できる。また、プレス式管継手１から離脱（落下）した表示体９のシールリング記載を再度確認することによって、シールリングのセット忘れ品についても、クロスチェックができる。By this description (check), the operator can confirm the pre-set of the seal ring before caulking work without looking into the inside. Further, by reconfirming the description of the seal ring on the display 9 that has been detached (dropped) from the press-type pipe joint 1, it is possible to cross-check whether or not the seal ring has been left unset.
図示はしないが、本発明の第３実施形態に係るプレス式管継手１の監視システムを説明する。表示体９には更にＲＦタグ（ＩＣタグ）を具備すると良い。ＲＦタグは、様々な電子データの書き替えおよび／又は読み取りを電波及び／又は電磁波を用いて非接触にて行うことができるＲＦＩＤ（Ｒａｄｉｏ Ｆｒｅｑｕｅｎｃｙ Ｉｄｅｎｔｉｆｉｃａｔｉｏｎ）システムを構成するタグである。ＲＦタグには例えばアンテナ、制御回路及びメモリ等が内蔵されており、リーダ／ライタからの電磁波及び／又は電磁誘導により非接触にて電力供給及びデータ授受を行うことができる。種々のＲＦタグのうち、例えばステッカ状（ラベル状）のものを表示体９に貼り付けたり、内部へ埋め込むことが好ましい。Although not illustrated, a monitoring system for the press type pipe joint 1 according to the third embodiment of the present invention will be described. It is preferable that the display 9 is further equipped with an RF tag (IC tag). An RF tag is a tag that constitutes an RFID (Radio Frequency Identification) system capable of rewriting and/or reading various electronic data without contact using radio waves and/or electromagnetic waves. An RF tag, for example, contains an antenna, a control circuit, a memory, and the like, and can perform contactless power supply and data transmission/reception by electromagnetic waves and/or electromagnetic induction from a reader/writer. Among the various RF tags, it is preferable to attach, for example, a sticker-like (label-like) tag to the display 9 or to embed it inside.
このように表示体９にＲＦタグを具備することにより、プレス式管継手１や接続管２の識別情報や位置情報や加工・素材・履歴情報等が適宜記載されていると、配管現場での段取り、仮組み、施工（かしめ）に寄与する。また、表記情報とのクロスチェックも可能となり、補完的に施工精度を向上させることができる。By providing an RF tag on the display 9 in this way, identification information, position information, processing/material/history information, etc. of the press type pipe joint 1 and the connection pipe 2 can be written as appropriate, making it possible to improve the efficiency at the piping site. Contributes to setup, temporary assembly, and construction (caulking). In addition, it is possible to cross-check with the notation information, and it is possible to improve the construction accuracy in a complementary manner.
以上、本発明の実施形態を説明してきたが、本発明は上記の実施形態に限られるものではなく、本発明の趣旨を逸脱し範囲の変更があっても本発明に包含される。Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the present invention encompasses any modifications that deviate from the gist of the present invention.
１ プレス式管継手
２ 接続管
３ 被接続管
４ ソケット部
５ 先端部
６ 環状膨出部
７、１１ 取付環
８ 接続部
９ 表示体
１０ カシメ部1 press-type pipe joint 2 connecting pipe 3 connected pipe 4 socket portion 5 tip portion 6 annular bulging portion 7, 11 mounting ring 8 connecting portion 9 display body 10 caulked portion
Claims (3)
前記環状膨出部に交差して取付環が係止され、
該取付環は前記かしめ時に金型によって容易に切断される特性を有し、
前記取付環には少なくとも識別情報を表示した表示体が取付けられていることを特徴とする、
プレス式管継手用かしめ忘れ防止システム。Forgetting to caulk a press-type pipe joint that fixes the connected portion by inserting the connected pipe into a socket portion having an annular bulging portion and crimping the annular bulging portion and part of the socket portions on both sides thereof. A prevention system comprising:
A mounting ring is engaged across the annular bulging portion,
The mounting ring has a characteristic of being easily cut by a mold during crimping,
A display body displaying at least identification information is attached to the mounting ring,
Crimping prevention system for press type pipe fittings.
請求項１に記載のプレス式管継手用かしめ忘れ防止システム。The display body further displays confirmation information indicating that the sealing member has been accommodated inside the annular bulging portion,
The system for preventing forgetting to crimp for a press type pipe joint according to claim 1.
請求項１又は２に記載のプレス式管継手用かしめ忘れ防止システム。characterized in that an RF tag is housed or attached to the display,
The system for preventing forgetting to crimp for a press type pipe joint according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020107323A JP7320207B2 (en) | 2020-05-26 | 2020-05-26 | System to prevent forgetting to crimp press type pipe fittings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020107323A JP7320207B2 (en) | 2020-05-26 | 2020-05-26 | System to prevent forgetting to crimp press type pipe fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2021188736A JP2021188736A (en) | 2021-12-13 |
| JP7320207B2 true JP7320207B2 (en) | 2023-08-03 |
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| JP2020107323A Active JP7320207B2 (en) | 2020-05-26 | 2020-05-26 | System to prevent forgetting to crimp press type pipe fittings |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000123645A (en) | 1998-08-08 | 2000-04-28 | Nakasu Denki Kk | Wire managing tab |
| DE20013425U1 (en) | 2000-08-03 | 2000-12-07 | Mertens, Wilfried, 58706 Menden | Press fitting |
| JP2009002402A (en) | 2007-06-20 | 2009-01-08 | Sekisui Chem Co Ltd | Compressively caulked pipe joint and method for compressively caulking pipe joint |
| JP2009069591A (en) | 2007-09-14 | 2009-04-02 | Tlv Co Ltd | Tag device |
| JP2011224738A (en) | 2010-04-21 | 2011-11-10 | Shinryo Corp | Electric calking machine and attachment |
| JP2011256925A (en) | 2010-06-08 | 2011-12-22 | Nikkai Kogyo Kk | Caulked pipe joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3436822B2 (en) * | 1995-02-21 | 2003-08-18 | 株式会社ベネックス | Double press type pipe fitting |
-
2020
- 2020-05-26 JP JP2020107323A patent/JP7320207B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000123645A (en) | 1998-08-08 | 2000-04-28 | Nakasu Denki Kk | Wire managing tab |
| DE20013425U1 (en) | 2000-08-03 | 2000-12-07 | Mertens, Wilfried, 58706 Menden | Press fitting |
| JP2009002402A (en) | 2007-06-20 | 2009-01-08 | Sekisui Chem Co Ltd | Compressively caulked pipe joint and method for compressively caulking pipe joint |
| JP2009069591A (en) | 2007-09-14 | 2009-04-02 | Tlv Co Ltd | Tag device |
| JP2011224738A (en) | 2010-04-21 | 2011-11-10 | Shinryo Corp | Electric calking machine and attachment |
| JP2011256925A (en) | 2010-06-08 | 2011-12-22 | Nikkai Kogyo Kk | Caulked pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021188736A (en) | 2021-12-13 |
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