JP2003227586A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JP2003227586A JP2003227586A JP2002339258A JP2002339258A JP2003227586A JP 2003227586 A JP2003227586 A JP 2003227586A JP 2002339258 A JP2002339258 A JP 2002339258A JP 2002339258 A JP2002339258 A JP 2002339258A JP 2003227586 A JP2003227586 A JP 2003227586A
- Authority
- JP
- Japan
- Prior art keywords
- adapter
- pipe joint
- tightening member
- ring
- main 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.)
- Granted
Links
Landscapes
- Joints With Pressure Members (AREA)
Abstract
Description
【発明の属する技術分野】この発明は、配管を接続する
ための管継手に関するものである。TECHNICAL FIELD The present invention relates to a pipe joint for connecting pipes.
【従来の技術】従来より、流体を移送するための配管を
接続するために管継手が使用されている。図５に示すよ
うに、この管継手はボディ本体21内にアダプタ22を無理
嵌めしており、外方からナット23により一体的に又はネ
ジを締め付けて機器等（図示せず）に固定する（例え
ば、特許文献１参照）。ところで、ボディ本体21内にア
ダプタ22を嵌入する際にボディ本体21が一時的に拡径す
るので、ボディ本体21の外周とナット23の内周との間に
は若干のクリアランスＣを設けている。なお前記アダプ
タ22と機器等との間に介在するシール用パッキン24によ
り、流体密性を担保している。この管継手は、機器等に
取り付けた後でも必要に応じてエルボー状としたボディ
本体21を回動させて向きを変えることができるという利
点がある。しかし、使用中に配管に足を引っ掛けたりし
て斜め方向に思いがけない強い力が働くと、ナット23と
アダプタ22により機器等に締め付けたボディ本体21が抜
け出してしまうおそれがあるという問題があった。2. Description of the Related Art Conventionally, pipe fittings have been used to connect pipes for transferring fluid. As shown in FIG. 5, this pipe joint has an adapter 22 forcedly fitted into a body main body 21, and is fixed to a device or the like (not shown) integrally or by tightening a screw from the outside with a nut 23 ( See, for example, Patent Document 1). By the way, since the body body 21 temporarily expands in diameter when the adapter 22 is fitted into the body body 21, a slight clearance C is provided between the outer periphery of the body body 21 and the inner periphery of the nut 23. . Fluid tightness is ensured by the seal packing 24 interposed between the adapter 22 and the device or the like. This pipe joint has an advantage that the elbow-shaped body main body 21 can be turned to change its direction as needed even after being attached to a device or the like. However, there was a problem that the body body 21 tightened to the device etc. by the nut 23 and the adapter 22 might come out if unexpectedly strong force is exerted in the diagonal direction by hooking the foot on the pipe during use. .
【特許文献１】実公平６−４２１５４号公報[Patent Document 1] Japanese Utility Model Publication No. 6-42154
【発明が解決しようとする課題】そこでこの発明は、ボ
ディ本体が従来よりも抜け出し難い管継手を提供しよう
とするものである。Therefore, the present invention is intended to provide a pipe joint in which the body body is more difficult to slip out than in the past.
【課題を解決するための手段】前記課題を解決するため
この発明では次のような技術的手段を講じている。
この発明の管継手は、配管を保持するボディ本体内
にアダプタが無理嵌めされ、その外方から締付部材によ
り前記アダプタを機器等に向けて締め付けて固定する形
式であると共に、前記締付部材の内周を減少させるよう
にかしめることにより締付部材の内周とボディ本体の外
周との間のクリアランスを小さく設定したことを特徴と
する。この管継手では、締付部材の内周を減少させるよ
うにかしめることにより締付部材の内周とボディ本体の
外周との間にクリアランスを小さく設定したので、ボデ
ィ本体と締付部材とが相対変位を起こす余地が少なくボ
ディ本体と締付部材との係合力が向上している。
またこの発明の管継手は、配管を保持するボディ本
体内にアダプタが無理嵌めされ、その外方から締付部材
により前記アダプタを機器等に向けて締め付けて固定す
る形式であると共に、前記ボディ本体と締付部材との間
にリング状部材が介在することにより締付部材の内周と
ボディ本体の外周との間のクリアランスを小さく設定し
たことを特徴とする。この管継手では、ボディ本体と締
付部材との間にリング状部材が介在することにより締付
部材の内周とボディ本体の外周との間のクリアランスを
小さく設定したので、ボディ本体と締付部材とが相対変
位を起こす余地が少なくボディ本体と締付部材との係合
力が向上している。
組立時には前記リング状部材が介在する状態で締付
部材の内周を減少させるようにかしめてもよい。具体的
にはこのように作業することにより、締付部材の内周と
ボディ本体の外周との間のクリアランスを小さく設定す
ることができる。
この発明の管継手は、配管を保持するボディ本体と
アダプタとが無理嵌めされ、前記アダプタを機器等に固
定する形式であると共に、前記ボディ本体とアダプタと
の無理嵌め領域の円周方向外方にリング状部材を配置
し、前記無理嵌め領域における外方側の部材の外周方向
への変位を拘束するようにしたことを特徴とする。この
管継手では、リング状部材により無理嵌め領域における
外方側の部材（ボディ本体又はアダプタ）の外周方向へ
の変位を拘束するようにしたので、無理嵌め領域ではボ
ディ本体とアダプタとの相対変位が生じる余地が少なく
なっている。なおボディ本体とアダプタとの無理嵌めの
態様は、外方側としたボディ本体内に内方側としたアダ
プタを無理嵌めしてもよいし、外方側としたアダプタ内
に内方側としたボディ本体を無理嵌めしてもよい。無理
嵌めの態様は、例えば凹凸の嵌合とすることができる。
前記ボディ本体とアダプタとが無理嵌めされ、前記
アダプタをその外方から締付部材により機器等に向けて
締め付けて固定する形式としてもよい。このように構成
すると、無理嵌め領域の円周方向外方のリング状部材が
使用時に不用意に進退しないように、外方の締付部材に
よって位置決め固定することができる。
前記ボディ本体は、前記無理嵌め領域の変形に支障
のない位置まで締付部材とリング状部材をスライドさせ
ることが可能な長さを有することとしてもよい。このよ
うに構成すると、継手組立時には締付部材とリング状部
材を無理嵌め領域の変形に支障のない位置までスライド
させた状態でボディ本体とアダプタとを無理嵌めするこ
とにより、ボディ本体に締付部材とリング状部材を先に
装着してからアダプタを無理嵌めすることができ事後的
に締付部材をかしめる必要がない。In order to solve the above problems, the present invention takes the following technical means. The pipe joint of the present invention is a type in which an adapter is forcibly fitted into a body holding a pipe, and the adapter is tightened and fixed from the outside by a tightening member toward a device or the like. It is characterized in that the clearance between the inner circumference of the tightening member and the outer circumference of the body is set to be small by caulking so as to reduce the inner circumference. In this pipe joint, the inner circumference of the tightening member is caulked so as to reduce the clearance between the inner circumference of the tightening member and the outer circumference of the body body. There is little room for relative displacement, and the engagement force between the body and the tightening member is improved. Further, in the pipe joint of the present invention, an adapter is forcibly fitted in the body body for holding the pipe, and the adapter is tightened and fixed from the outside by a tightening member toward the device and the like. The clearance between the inner circumference of the tightening member and the outer circumference of the body is set to be small by interposing a ring-shaped member between the tightening member and the tightening member. In this pipe joint, the ring-shaped member is interposed between the body body and the tightening member, so that the clearance between the inner circumference of the tightening member and the outer circumference of the body main body is set to be small. There is little room for relative displacement with the member, and the engagement force between the body body and the tightening member is improved. At the time of assembly, the inner periphery of the tightening member may be caulked with the ring-shaped member interposed. Specifically, by performing such an operation, the clearance between the inner circumference of the tightening member and the outer circumference of the body can be set small. The pipe joint of the present invention is of a type in which the body main body for holding the pipe and the adapter are forcibly fitted, and the adapter is fixed to a device or the like. A ring-shaped member is arranged on the outer peripheral surface of the member to restrain the displacement of the outer member in the force-fitting region in the outer peripheral direction. In this pipe joint, the displacement of the outer member (body body or adapter) in the force fitting region in the outer peripheral direction is constrained by the ring-shaped member, so that the relative displacement between the body body and the adapter in the force fitting region is restricted. There is less room for As for the form of force fitting between the body main body and the adapter, the inner side adapter may be force-fitted in the outer side body body, or the inner side may be set in the outer side adapter. You may force fit the body. The form of forced fitting can be, for example, uneven fitting. The body main body and the adapter may be forcibly fitted, and the adapter may be fixed by tightening the adapter from the outside toward a device or the like with a tightening member. According to this structure, the outer clamping member can be positioned and fixed by the outer tightening member so that the outer ring-shaped member in the force fitting region does not inadvertently move back and forth during use. The body main body may have a length such that the tightening member and the ring-shaped member can be slid to a position that does not hinder the deformation of the force-fitting region. According to this structure, when the joint is assembled, the tightening member and the ring-shaped member are slid to the position where they do not interfere with the deformation of the force fitting region, and the body body and the adapter are forcefully fitted to each other, so that the body body is tightened. The member and the ring-shaped member can be attached first, and then the adapter can be forcibly fitted, and it is not necessary to subsequently crimp the fastening member.
【発明の実施の形態】以下、この発明の実施の形態を図
面を参照して説明する。
（実施形態１）図１に示すように、この実施形態の管継
手は、配管１（プラスチック・チューブ）を保持する構
造を内蔵するエルボー状とした合成樹脂製のボディ本体
２内に、合成樹脂製のアダプタ３が機器等（図示せず）
への接続端側４から挿入されて無理嵌めされている。ボ
ディ本体２内には環状の凹部５が形成されており、アダ
プタ３の外周には前記凹部５に対応する環状の凸部６が
突設されている。ボディ本体２とアダプタ３との間に
は、シール用のＯリング７を奥側に介在させている。そ
してセット時には、その外方から締付部材８により前記
アダプタ３を機器等に向けて締め付けて固定する形式と
している。この実施形態では締付部材８として、螺溝を
有する金属製のナットを用いている。前記アダプタ３と
機器等との間に介在するシール用パッキン９により、流
体密性を担保している。ところで管継手の組立時、ボデ
ィ本体２内にアダプタ３を嵌入し、ボディ本体２内の環
状の凹部５とアダプタ３の外周の環状の凸部６を嵌合さ
せる際、ボディ本体２が一時的に拡径するので、ボディ
本体２の外周とナットの内周との間にはクリアランスを
設けている。そして、前記締付部材８（金属製ナット）
の内周の径を減少させるようにかしめることにより、締
付部材８の内周とボディ本体２の外周との間のクリアラ
ンスＣを小さく設定している。具体的には、ボディ本体
２と締付部材８との間のクリアランスＣが最初は約０．
５〜０．９ｍｍであったのを、約０．２ｍｍとなるよう
にカシメている。この際のその寸法公差は、約０．１ｍ
ｍ程度であった。次に、この実施形態の管継手の使用状
態を説明する。この管継手は、締付部材８（金属製ナッ
ト）の内周を減少させるようにかしめることにより締付
部材８の内周とボディ本体２の外周との間にクリアラン
スＣを小さく設定したので、使用中に配管１に足を引っ
掛けたりして思いがけない強い力が働いても、ボディ本
体２と締付部材８とが相対変位を起こす余地が少なくボ
ディ本体２と締付部材８との係合力が向上しており、ボ
ディ本体２が従来よりも抜け出し難いという大きな利点
がある。また、機器等に取り付けた後でも必要に応じて
ボディ本体２（エルボー状）を回動させて向きを変える
ことができる。すなわち、使用時の必要に応じた回動を
可能としながら、且つ管継手からボディ本体２が非常に
抜け難いようにすることができるという利点がある。
（実施形態２）次に、実施形態２を実施形態１との相違
点を中心に説明する。図２に示すように、合成樹脂製の
ボディ本体２と締付部材８（金属製ナット）との間であ
って機器等への接続端側４に段状の凹設部10を形成して
おり、ここに断面略Ｌ字形の金属製のリング状部材11を
介在させている。尚、断面略Ｌ字形でなくてもよい。前
記凹設部10の間隙は約１．２ｍｍとし、前記リング状部
材11の厚みは約１．０ｍｍとしている。組立時には、リ
ング状部材11が介在する状態で、前記締付部材８（金属
製ナット）の内周の径を減少させるようにかしめること
により、締付部材８の内周とボディ本体２の外周との間
のクリアランスＣを小さく設定している。そして、介在
させた前記リング状部材11によって、リング状部材11が
存する領域におけるボディ本体２と締付部材８との間の
空隙を小さくして殆ど無くすことができるので、ボディ
本体２と締付部材８とが相対変位を起こす余地が少なく
なり、ボディ本体２と締付部材８との係合力が向上しボ
ディ本体２が抜け出し難くなるという利点がある。一
方、ボディ本体２と締付部材８との間のクリアランスＣ
（リング状部材11を介在させる段状の凹設部10の奥側の
領域）は約０．０５ｍｍとしており、その寸法公差は約
０．０５ｍｍ程度としている。すなわち、ボディ本体２
と締付部材８との間にリング状部材11を介在させること
により、実施形態１よりも前記相互間のクリアランスを
厳しく詰めることができ、ボディ本体２と締付部材８と
の係合力が大きいという利点がある。
（実施形態３）次に、実施形態３を上記実施形態との相
違点を中心に説明する。図３に示すように、配管１を保
持する構造を内蔵するボディ本体２とアダプタ３とが無
理嵌めされ、前記アダプタ３をその外方から締付部材８
により機器等に固定して使用する形式としている。ここ
で、外方側としたボディ本体２内の環状の凹部５に、内
方側としたアダプタ３外周の環状の凸部６を無理嵌めす
るような態様としている。なお外方側としたアダプタ内
に、内方側としたボディ本体を無理嵌めするような態様
としてもよい。また、前記ボディ本体２とアダプタ３と
の無理嵌め領域（ボディ本体２における環状の凹部５の
外方領域）の円周方向外方に金属製のリング状部材11を
配置し、前記無理嵌め領域におけるボディ本体２の外周
方向への変位を拘束するようにしている。そして前記ボ
ディ本体２は、前記無理嵌め領域（ボディ本体２におけ
る環状の凹部５の外方領域）の変形に支障のない位置ま
で締付部材８とリング状部材11をスライドさせる（図示
の上向きの矢印の向きに変位させる）ことが可能な長さ
を有するように設定している。なおシール用パッキン９
は、継手組立ての終了後に締付部材８における機器等へ
の接続端側４から挿入してもよい。次に、この実施形態
の管継手の使用状態を説明する。この管継手では、リン
グ状部材11により無理嵌め領域（ボディ本体２における
環状の凹部５の外方領域）におけるボディ本体２の外周
方向への変位を拘束するようにしたので、この無理嵌め
領域ではボディ本体２とアダプタ３との相対変位が生じ
る余地が極めて少なくなっており、ボディ本体２が従来
よりも非常に抜け出し難いという利点がある。また前記
ボディ本体２とアダプタ３とが無理嵌めされ、前記アダ
プタ３をその外方から締付部材８により機器等に向けて
締め付けて固定して使用する形式としており、無理嵌め
領域の円周方向外方のリング状部材11が使用時に不用意
に進退しないように、外方の締付部材８によって位置決
め固定するような設定をすることができる。さらに、前
記ボディ本体２は、前記無理嵌め領域の変形に支障のな
い位置まで締付部材８とリング状部材11をスライドさせ
る（図示の上向きの矢印の向きに変位させる）ことが可
能な長さを有するので、継手組立時には締付部材８とリ
ング状部材11を無理嵌め領域の変形に支障のない位置ま
でスライドさせた状態でボディ本体２とアダプタ３とを
無理嵌めすることにより、ボディ本体２に締付部材８と
リング状部材11を先に装着してからアダプタ３を無理嵌
めすることができ、事後的に締付部材８が抜けないよう
にするためにその端部（図示上端部）をかしめる必要は
ない。そして、機器等に取り付けた後でも必要に応じて
ボディ本体２を回動させて向きを変えることができる。
すなわち、使用時の必要に応じた回動を可能としなが
ら、且つ管継手からボディ本体２が非常に抜け難いよう
にすることができるという利点がある。
（実施形態４）次に、実施形態４を上記実施形態との相
違点を中心に説明する。図４に示すように、配管１を保
持する構造を内蔵する合成樹脂製のボディ本体２とアダ
プタ３とが無理嵌めされ、前記アダプタ３と一体的に形
成された締付部８により機器等に固定して使用する形式
としている。また、前記ボディ本体２とアダプタ３との
無理嵌め領域（ボディ本体２における環状の凹部５の外
方領域）の円周方向外方に金属製のリング状部材11を配
置し、前記無理嵌め領域におけるボディ本体２の外周方
向への変位を拘束するようにしている。ここで、前記リ
ング状部材11の内周面に断面半円状の環状凹部12を形成
すると共に、ボディ本体２の外周面における前記環状凹
部に対応する位置には断面半円状の環状凸部13を形成し
て、これらを強制嵌合させることにより使用時の相互間
の相対変位を防止している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) As shown in FIG. 1, a pipe joint of this embodiment has a structure in which an elbow-shaped synthetic resin body main body 2 having a structure for holding a pipe 1 (plastic tube) is provided in a synthetic resin. Made adapter 3 is a device (not shown)
It is inserted from the connection end side 4 to and is forcibly fitted. An annular recess 5 is formed in the body 2, and an annular protrusion 6 corresponding to the recess 5 is provided on the outer circumference of the adapter 3. An O-ring 7 for sealing is provided on the back side between the body 2 and the adapter 3. Then, at the time of setting, the adapter 3 is fixed from the outside by tightening the adapter 3 toward a device or the like. In this embodiment, a metal nut having a thread groove is used as the fastening member 8. Fluid tightness is ensured by the sealing packing 9 interposed between the adapter 3 and the device. By the way, at the time of assembling the pipe joint, when the adapter 3 is fitted into the body body 2 and the annular concave portion 5 in the body body 2 and the annular convex portion 6 on the outer periphery of the adapter 3 are fitted, the body body 2 is temporarily Since the diameter is increased, a clearance is provided between the outer circumference of the body 2 and the inner circumference of the nut. Then, the tightening member 8 (metal nut)
By caulking so as to reduce the diameter of the inner circumference, the clearance C between the inner circumference of the fastening member 8 and the outer circumference of the body 2 is set small. Specifically, the clearance C between the body 2 and the fastening member 8 is initially about 0.
The diameter of 5 to 0.9 mm is crimped to about 0.2 mm. The dimensional tolerance at this time is about 0.1 m
It was about m. Next, a usage state of the pipe joint of this embodiment will be described. In this pipe joint, the clearance C is set to be small between the inner circumference of the tightening member 8 and the outer circumference of the body 2 by caulking the inner circumference of the tightening member 8 (metal nut). Even if an unexpectedly strong force is exerted by catching a foot on the pipe 1 during use, there is little room for relative displacement between the body 2 and the fastening member 8, and the relationship between the body 2 and the fastening member 8 is small. The resultant strength is improved, and there is a great advantage that the body 2 is more difficult to slip out than before. In addition, the body body 2 (elbow-shaped) can be turned to change its direction as needed even after being attached to a device or the like. That is, there is an advantage that the body main body 2 can be made very difficult to come off from the pipe joint while being capable of being rotated as required during use. (Embodiment 2) Next, Embodiment 2 will be described focusing on the differences from Embodiment 1. As shown in FIG. 2, a stepped recessed portion 10 is formed between the synthetic resin body 2 and the tightening member 8 (metal nut) and on the connection end side 4 to the device. A metal ring-shaped member 11 having a substantially L-shaped cross section is interposed here. It should be noted that the cross section need not be substantially L-shaped. The gap between the recessed portions 10 is about 1.2 mm, and the thickness of the ring-shaped member 11 is about 1.0 mm. At the time of assembly, by caulking so as to reduce the diameter of the inner circumference of the tightening member 8 (metal nut) with the ring-shaped member 11 interposed, the inner circumference of the tightening member 8 and the body body 2 are The clearance C with the outer circumference is set small. The intervening ring-shaped member 11 makes it possible to reduce the gap between the body 2 and the tightening member 8 in the region where the ring-shaped member 11 is present to almost eliminate it. There is an advantage that there is less room for relative displacement between the member 8 and the engaging force between the body 2 and the tightening member 8 is improved, making it difficult for the body 2 to slip out. On the other hand, the clearance C between the body 2 and the tightening member 8
(A region on the inner side of the stepped recessed portion 10 with the ring-shaped member 11 interposed) is about 0.05 mm, and the dimensional tolerance thereof is about 0.05 mm. That is, the body 2
By interposing the ring-shaped member 11 between the tightening member 8 and the tightening member 8, the mutual clearance can be tighter than in the first embodiment, and the engaging force between the body 2 and the tightening member 8 is large. There is an advantage. (Third Embodiment) Next, a third embodiment will be described focusing on the differences from the above-described embodiments. As shown in FIG. 3, the body 3 having a built-in structure for holding the pipe 1 and the adapter 3 are forcibly fitted to each other, and the adapter 3 is tightened from the outside with the tightening member 8.
Therefore, it is designed to be used by fixing it to equipment. Here, the annular convex portion 6 on the outer circumference of the adapter 3 which is the inner side is forcibly fitted into the annular concave portion 5 in the body body 2 which is the outer side. It is also possible to adopt a mode in which the body body on the inner side is forcibly fitted into the adapter on the outer side. In addition, a metal ring-shaped member 11 is arranged on the outside in the circumferential direction of the force fitting region between the body body 2 and the adapter 3 (the region outside the annular recess 5 in the body body 2). The displacement of the body body 2 in the outer peripheral direction is restrained. Then, the body body 2 slides the tightening member 8 and the ring-shaped member 11 to a position where there is no hindrance to the deformation of the force-fitting region (the outer region of the annular recess 5 in the body body 2) (in the upward direction in the drawing). It is set so as to have a length capable of being displaced in the direction of the arrow). Seal packing 9
May be inserted from the connection end side 4 of the fastening member 8 to a device or the like after the joint assembly is completed. Next, a usage state of the pipe joint of this embodiment will be described. In this pipe joint, the ring-shaped member 11 restrains the displacement of the body body 2 in the outer peripheral direction in the force-fitting region (the region outside the annular recess 5 in the body body 2). There is very little room for relative displacement between the body 2 and the adapter 3 and there is an advantage that the body 2 is much more difficult to slip out than in the conventional case. Further, the body body 2 and the adapter 3 are forcibly fitted, and the adapter 3 is used by being tightened and fixed from the outside toward a device or the like by a tightening member 8, and is used in the circumferential direction of the forcibly fitted region. In order to prevent the outer ring-shaped member 11 from inadvertently moving back and forth during use, the outer tightening member 8 can be positioned and fixed. Further, the body body 2 has such a length that the fastening member 8 and the ring-shaped member 11 can be slid (displaced in the direction of the upward arrow in the figure) to a position where the deformation of the force-fitting region is not hindered. Therefore, when the joint body is assembled, the body body 2 and the adapter 3 are forcibly fitted to each other while the tightening member 8 and the ring-shaped member 11 are slid to a position that does not hinder the deformation of the forcibly fitting region. The adapter 3 can be forcibly fitted after the tightening member 8 and the ring-shaped member 11 have been attached to the end first, and the end portion (upper end portion in the drawing) of the end portion thereof in order to prevent the tightening member 8 from coming off afterwards. There is no need to crimp. Further, the body body 2 can be rotated to change its direction as needed even after being attached to a device or the like.
That is, there is an advantage that the body main body 2 can be made very difficult to come out of the pipe joint while being capable of being rotated as required during use. (Embodiment 4) Next, Embodiment 4 will be described with a focus on differences from the above embodiment. As shown in FIG. 4, a synthetic resin body main body 2 having a built-in structure for holding the pipe 1 and an adapter 3 are forcibly fitted to each other, and a tightening portion 8 formed integrally with the adapter 3 allows the device or the like to be mounted on a device or the like. The format is fixed and used. In addition, a metal ring-shaped member 11 is arranged on the outside in the circumferential direction of the force fitting region between the body body 2 and the adapter 3 (the region outside the annular recess 5 in the body body 2). The displacement of the body body 2 in the outer peripheral direction is restrained. Here, an annular concave portion 12 having a semicircular cross section is formed on the inner peripheral surface of the ring-shaped member 11, and an annular convex portion having a semicircular cross section is formed at a position on the outer peripheral surface of the body 2 corresponding to the annular concave portion. By forming 13 and forcibly fitting them together, relative displacement between them during use is prevented.
【発明の効果】この発明は上述のような構成であり、次
の効果を有する。ボディ本体と締付部材とが相対変位を
起こす余地が少なくボディ本体と締付部材との係合力が
向上しているので、ボディ本体が従来よりも抜け出し難
い管継手を提供することができる（請求項１，２，
３）。また、無理嵌め領域ではボディ本体とアダプタと
の相対変位が生じる余地が少なくなっているので、ボデ
ィ本体が従来よりも抜け出し難い管継手を提供すること
ができる（請求項４，５，６）。The present invention having the above-mentioned structure has the following effects. Since there is little room for relative displacement between the body main body and the tightening member and the engagement force between the body main body and the tightening member is improved, it is possible to provide a pipe joint in which the body main body is more difficult to slip out than before (claim Items 1, 2,
3). Further, since there is little room for relative displacement between the body body and the adapter in the force-fitting region, it is possible to provide a pipe joint in which the body body is more difficult to slip out than before (claims 4, 5, and 6).
【図１】この発明の管継手の実施形態１を説明する半断
面図。FIG. 1 is a half sectional view illustrating a first embodiment of a pipe joint of the present invention.
【図２】この発明の管継手の実施形態２を説明する半断
面図。FIG. 2 is a half sectional view illustrating a second embodiment of the pipe joint of the present invention.
【図３】この発明の管継手の実施形態３を説明する半断
面図。FIG. 3 is a half sectional view illustrating a third embodiment of the pipe joint of the present invention.
【図４】この発明の管継手の実施形態４を説明する半断
面図。FIG. 4 is a half sectional view illustrating a fourth embodiment of the pipe joint of the present invention.
【図５】従来の管継手を説明する半断面図。FIG. 5 is a half sectional view illustrating a conventional pipe joint.
１ 配管 ２ ボディ本体 ３ アダプタ ８ 締付部材 11 リング状部材 Ｃ クリアランス 1 piping 2 body 3 adapter 8 Tightening member 11 Ring-shaped member C clearance
Claims (6)
が無理嵌めされ、その外方から締付部材により前記アダ
プタを機器等に向けて締め付けて固定する形式であると
共に、前記締付部材の内周を減少させるようにかしめる
ことにより締付部材の内周とボディ本体の外周との間の
クリアランスを小さく設定したことを特徴とする管継
手。1. A type in which an adapter is forcibly fitted into a body holding a pipe, and the adapter is tightened from the outside by a tightening member toward a device or the like, and the inside of the tightening member is also fixed. A pipe joint characterized in that the clearance between the inner circumference of the tightening member and the outer circumference of the body is set small by caulking to reduce the circumference.
が無理嵌めされ、その外方から締付部材により前記アダ
プタを機器等に向けて締め付けて固定する形式であると
共に、前記ボディ本体と締付部材との間にリング状部材
が介在することにより締付部材の内周とボディ本体の外
周との間のクリアランスを小さく設定したことを特徴と
する管継手。2. An adapter is forcibly fitted into a body for holding piping, and the adapter is tightened from the outside toward a device or the like by a tightening member and is fastened to the body. A pipe joint characterized in that a clearance between the inner circumference of the tightening member and the outer circumference of the body is set small by interposing a ring-shaped member between the member and the member.
状態で締付部材の内周を減少させるようにかしめるよう
にした請求項２記載の管継手。3. The pipe joint according to claim 2, wherein at the time of assembly, the tightening member is caulked so as to reduce the inner circumference with the ring-shaped member interposed.
が無理嵌めされ、前記アダプタを機器等に固定する形式
であると共に、前記ボディ本体とアダプタとの無理嵌め
領域の円周方向外方にリング状部材を配置し、前記無理
嵌め領域における外方側の部材の外周方向への変位を拘
束するようにしたことを特徴とする管継手。4. A body main body for holding piping and an adapter are forcibly fitted to each other to fix the adapter to a device and the like, and a ring is provided outward in the circumferential direction of a forcibly fitted region between the body main body and the adapter. A pipe joint, wherein a tubular member is arranged to restrain the displacement of the outer member in the force fitting region in the outer peripheral direction.
され、前記アダプタをその外方から締付部材により機器
等に向けて締め付けて固定する形式とした請求項４記載
の管継手。5. The pipe joint according to claim 4, wherein the body main body and the adapter are forcibly fitted, and the adapter is clamped from the outside toward a device or the like by a fastening member to be fixed.
変形に支障のない位置まで締付部材とリング状部材をス
ライドさせることが可能な長さを有する請求項５記載の
管継手。6. The pipe joint according to claim 5, wherein the body body has a length such that the tightening member and the ring-shaped member can be slid to a position that does not hinder the deformation of the force-fitting region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002339258A JP3834756B2 (en) | 2001-11-29 | 2002-11-22 | Pipe fitting |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001364408 | 2001-11-29 | ||
| JP2001-364408 | 2001-11-29 | ||
| JP2002339258A JP3834756B2 (en) | 2001-11-29 | 2002-11-22 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003227586A true JP2003227586A (en) | 2003-08-15 |
| JP3834756B2 JP3834756B2 (en) | 2006-10-18 |
Family
ID=27759460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002339258A Expired - Fee Related JP3834756B2 (en) | 2001-11-29 | 2002-11-22 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3834756B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013148163A (en) * | 2012-01-19 | 2013-08-01 | Nitta Corp | Pipe joint |
-
2002
- 2002-11-22 JP JP2002339258A patent/JP3834756B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013148163A (en) * | 2012-01-19 | 2013-08-01 | Nitta Corp | Pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3834756B2 (en) | 2006-10-18 |
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