JP2010181022A - Joint of gas passage for fusion cutting - Google Patents
Joint of gas passage for fusion cutting Download PDFInfo
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本発明はガス溶接・切断またはこれに類する作業において、対となって用いられる可燃性ガスと酸素などの溶断用ガス流路の継手に関するものである。 The present invention relates to a joint of a combustible gas and a gas channel for fusing such as oxygen used as a pair in gas welding / cutting or similar operations.
従来の溶断用ガス流路における可燃性ガス用の継手ならび酸素用の継手は、使用するガスの種類に応じて外観の形状や構成部品のメッキの色などによって識別されて使用されている。
また、使用するガスの常用圧力と流量とに関連して可燃性ガス用の継手は、酸素用の継手のものより相似的に大きめに形成されているのが一般的でり、どちらの継手ともに連結手段ならびその連結の切り離しに伴う弁手段は同一の構成となっている。
これら両継手のそれぞれのソケット継手とプラグ継手の連結は、ソケット継手とプラグ継手の相互押し込みによって、ソケット継手に組み込まれた連結球をプラグ継手の連結溝に掛かり合いさせ、その掛かり合いをソケット継手に組み込まれた着脱筒体よって連結が保持される。この連結に従ってプラグ先端部のその端面でソケット継手の弁室に組み込まれた開閉弁を開弁方向に押して弁室の流路を開き、ソケット継手とプラグ継手が気密状に接続される。また連結の切り離しは着脱筒体の後退または前進操作によって連結が自動的に切り離され、この切り離しに従って弁室の流路は閉じられる。The conventional joint for combustible gas and the joint for oxygen in the gas channel for fusing are identified and used according to the shape of appearance, the color of plating of components, etc. according to the type of gas used.
In addition, in connection with the normal pressure and flow rate of the gas used, the joint for combustible gas is generally formed to be similar and larger than that for the joint for oxygen, The connecting means and the valve means associated with the disconnection have the same configuration.
The socket joint and plug joint of each of these joints are connected to each other by pushing the socket joint and the plug joint together so that the connection ball incorporated in the socket joint is engaged with the connection groove of the plug joint, and the engagement is connected to the socket joint. The connection is held by the detachable cylinder incorporated in the. According to this connection, the open / close valve incorporated in the valve chamber of the socket joint is pushed in the valve opening direction at the end face of the plug tip portion to open the valve chamber flow path, and the socket joint and the plug joint are connected in an airtight manner. The connection is automatically disconnected by the backward or forward operation of the detachable cylinder, and the flow path of the valve chamber is closed according to the disconnection.
しかしながら、ソケット継手と用途の異なるプラグ継手を誤って連結させたとき、可燃性ガス用の継手が酸素用の継手より相似的に大きく形成されているため、酸素用ソケット継手には可燃性ガス用プラグ継手が差し込めないが、可燃性ガス用ソケット継手に酸素用プラグ継手が押し込まれた際、連結されないまでも酸素用プラグ継手のプラグ先端部が開閉弁を押して、酸素用プラグ継手側の配管経路に可燃性ガスが放出されてしまう。
可燃性ガスと酸素とで対になって吹管用ホースに用いられる場合など、誤って可燃性ガス用ソケット継手に酸素用プラグ継手を押し込んだとき、酸素側の配管経路に可燃性ガスが放出され、その後、正常な用途で接続された場合、酸素側の配管経路に誤って流された可燃性ガスと正常に流された酸素との混合ガスが生成される。この混合ガスが爆発範囲に生成された状態での吹管の操作は、酸素側の配管経路でホースの破裂または吹管や圧力調整器などの機器に損傷を与えるような爆発性の逆火が発生するため非常に危険である。However, when a socket joint and a plug joint of a different purpose are mistakenly connected, the joint for flammable gas is formed to be similar in size to the joint for oxygen. The plug joint cannot be inserted, but when the oxygen plug joint is pushed into the socket joint for flammable gas, the plug tip of the oxygen plug joint pushes the open / close valve until it is not connected, and the piping path on the oxygen plug joint side Flammable gas will be released.
When the plug joint for oxygen is accidentally pushed into the socket joint for flammable gas, such as when a pair of flammable gas and oxygen is used for a blow pipe hose, the flammable gas is released into the oxygen side piping path. After that, when connected for normal use, a mixed gas of combustible gas and oxygen that has been normally flowed through the piping path on the oxygen side is generated. Operation of the blowpipe with this mixed gas generated in the explosion range will cause an explosive flashback that will rupture the hose or damage equipment such as the blowpipe and pressure regulator in the oxygen side piping path. Because it is very dangerous.
本発明は、上記従来の問題点を改善して、溶断用の可燃性ガスと酸素の配管経路において、ソケット継手に用途の異なるプラグ継手を接続しても、プラグ継手側にガスを流さない安全な溶断用ガス流路の継手を提供しようとするものである。 The present invention improves the above-mentioned conventional problems, and in the fusing flammable gas and oxygen piping path, even if a plug joint having a different application is connected to the socket joint, no gas flows to the plug joint side. An object of the present invention is to provide a fusing gas flow path joint.
可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）とで構成された可燃性ガス用の継手（ａ）と、該可燃性ガス用の継手（ａ）の構成部分と同一の形態を有して相似的に小さく形成されて、酸素用ソケット継手（１ｘ）と酸素用プラグ継手（２ｘ）とで構成された酸素用の継手（ｂ）と、からなり、これら可燃性ガス用の継手（ａ）と酸素用の継手（ｂ）のそれぞれが、ソケット継手とプラグ継手の相互押し込みで分離可能に連結する手段と、この連結と分離に従ってソケット継手の流路を開閉する弁手段と、を具備し、上記可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の流路を開くことを阻止する弁手段と、上記酸素用ソケット継手（１ｘ）に可燃性ガス用プラグ継手（２）を連結不能な手段と、をさらに具備し、
上記可燃性ガス用の継手（ａ）の弁手段は、可燃性ガス用ソケット継手（１）の配管接続体（１３）にプラグ案内筒体（１１）が一体に結合して形成された弁室（５０）と、この弁室（５０）内に固定されて組み込まれた円筒状の弁座（５２）と、端部が封じられた円筒状に形成されて、その封じられた端部近傍の筒壁に通し穴（５１ａ）が設けられ、この通し穴（５１ａ）と封じられた端部との間に第２“０”リング（５７）が取り付けられ、他方の開口側の端部内壁に環状のパッキン（５８）が組み込まれて、封じられた端部側が弁室（５０）の一次側方向を向いて、上記弁座（５２）に第１”ｏ”リング（５６）を介して往復動可能に組み込まれた弁棒（５１）と、パッキン接合面（２１ｂ）と環状の隆起部（２１ｃ）とが連続して有するプラグ先端部（２１）に連続して大径筒部（２３）が設けられた円筒状の可燃性ガス用プラグ継手（２）と、で構成され、
上記弁棒（５１）が前進位置に存して、この弁棒（５１）に設けられた通し穴（５１ａ）が弁座（５２）の一次側方向に弁室（５０）に臨むように出て、弁座（５２）の一次側から通し穴（５１ａ）の外から内に通じる流路が形成されて弁室（５０）の流路が開かれ、上記弁棒（５１）が後退位置に存して、第２“０”リング（５７）が弁座（５２）の一次側端面に接合して、弁室（５０）の一次側から通し穴（５１ａ）に通じる流路を封じて弁室（５０）の流路が閉じられ、
上記弁座（５２）の二次側端面に片係して組み込まれた第３スプリング（５９）が、弁棒（５１）を常に後退位置に付勢していて弁室（５０）の流路が閉じられ、
上記弁室（５０）の流路の開閉は、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の相互押し込みで、プラグ先端部（２１）がプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に案内され、パッキン接合面（２１ｂ）が上記後退位置に存する弁棒（５１）の環状のパッキン（５８）に嵌め込まれ、さらなる押し込みによるプラグ先端部（２１）の前進に従って、環状の隆起部（２１ｃ）の一次側の環状の斜面（２１ｄ）が、環状のパッキン（５８）とともに弁棒（５１）を上記前進位置まで移動させて弁室（５０）の流路を開き、正常流のガスは可燃性ガス用プラグ継手（２）側へ流出し、その可燃性ガス用プラグ継手（２）を引き抜くことで、第３スプリング（５９）が、弁棒（５１）を上記後退位置へ移動させて弁室（５０）の流路を閉じ、
上記酸素用ソケット継手（１ｘ）に可燃性ガス用プラグ継手（２）を連結不能な手段ならび上記可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の流路を開くことを阻止する弁手段は、上記可燃性ガス用プラグ継手（２）のプラグ先端部（２１）と、このプラグ先端部（２１）より相似的に小さく形成された酸素用プラグ継手の（２ｘ）のプラグ先端部（２１ｘ）と、可燃性ガス用プラグ継手（２）のプラグ先端部（２１）に有する環状の隆起部（２１ｃ）の外径より小さく、パッキン接合面（２１ｂ）より大きい内径で形成され、可燃性ガス用ソケット継手（１）のプラグ案内部（１１ｄ）に相当する酸素用ソケット継手（１ｘ）のプラグ案内筒体（１１ｘ）に有するプラグ案内部（１１ｄｘ）と、上記酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）に有するパッキン接合面（２１ｂｘ）の外径より大きく形成された内径を有する可燃性ガス用ソケット継手（１）の弁棒（５１）ならび環状のパッキン（５８）と、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の外径より小さな内径で形成された可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）と、で構成され、
上記酸素用ソケット継手（１ｘ）のプラグ案内筒体（１１ｘ）に有するプラグ案内部（１１ｄｘ）に可燃性ガス用プラグ継手（２）のプラグ先端部（２１）が差し込まれた際、パッキン接合面（２１ｂ）が挿入されるが、環状の隆起部（２１ｃ）がプラグ案内部（１ｄｘ）の内周端部に当たってそのプラグ先端部（２１）の前進を阻止して連結を不能とし、
上記可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）が差し込まれた際、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の端面がプラグ案内部（１１ｄ）の端面に突き当たった状態で、環状の隆起部（２１ｃｘ）で弁棒（５１）の開弁方向への移動を不能にプラグ先端部（２１ｘ）のパッキン接合面（２１ｂｘ）が、可燃性ガス用ソケット継手（１）の弁棒（５１）に組み込まれた環状のパッキン（５８）に収まり、弁室（５０）の流路を開くことを阻止するように、上記可燃性ガス用の継手（ａ）と、酸素用の継手（ｂ）と、が相対的に構成されていることを特徴とする。
また、上記可燃性ガス用の継手（ａ）の弁手段は、可燃性ガス用ソケット継手（１）が、配管接続体（１３）にプラグ案内筒体（１１）が一体に結合して形成された弁室（６０）と、環状のパッキン（６８）が取り付けられて上記弁室（６０）内の二次側に固定されて組み込まれた円筒状の弁座（６２）と、端部が封じられた円筒状に形成されて、その封じられた端部近傍の筒壁に通し穴（６１ａ）が設けられ、この通し穴（６１ａ）と封じられた端部との間に第４“０”リング（６７）が取り付けられ、封じられた端部側が弁室（６０）一次側方向を向いて、上記弁座（６２）に環状のパッキン（６８）を介して往復動可能に組み込まれた弁棒（６１）と、で構成され、
上記弁棒（６１）が前進位置に存して、この弁棒（６１）に設けられた通し穴（６１ａ）が弁座（６２）の一次側方向に弁室（６０）に臨むように出て、弁室（６０）の一次側から通し穴（６１ａ）の外から内に通じる流路が形成されて弁室（６０）の流路が開かれ、上記弁棒（６１）が後退位置に存して、第４“０”リング（６７）が弁座（６２）の一次側端面に接合して、弁室（６０）の一次側から通し穴（６１ａ）に通じる流路を封じて弁室（６０）の流路が閉じられ、
上記弁室（６０）の二次側に組み込まれた第５スプリング（６９）が、弁棒（６１）を常に後退位置に付勢していて弁室（６０）の流路が閉じられ、
上記弁室（６０）の流路の開閉は、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の相互押し込みで、プラグ先端部（２１）がプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に案内された前進に従って、弁棒（６１）の端部をプラグ先端部（２１）のパッキン接合面（２１ｂ）の先端で押しながら弁座（６２）に取り付けられた環状のパッキン（６８）に嵌め込まれ、弁棒を上記前進位置まで移動させて、正常流のガスは可燃性ガス用プラグ継手（２）側へ流出し、その可燃性ガス用プラグ継手（２）を引き抜くことで、第５スプリング（６９）が、弁棒（６１）を上記後退位置へ移動させて弁室（６０）の流路を閉じ、
上記可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の流路を開くことを阻止する弁手段が、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の端面がプラグ案内部（１１ｄ）の端面に突き当たった状態で、可燃性ガス用プラグ継手（２）のプラグ先端部（２１）より相似的に小さく形成された酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）に有するパッキン接合面（２１ｂｘ）の先端で、弁棒（６１）を開弁方向への移動を不能として、上記弁室（６０）の流路を開くことを阻止するようにしてもよい。Combustible gas joint (a) composed of a combustible gas socket joint (1) and a combustible gas plug joint (2), and the same components as the combustible gas joint (a) And a joint for oxygen (b) composed of an oxygen socket joint (1x) and an oxygen plug joint (2x), and these combustible gases. Means for connecting each of the joint (a) for oxygen and the joint (b) for oxygen so as to be separable by mutually pushing the socket joint and the plug joint, and valve means for opening and closing the flow path of the socket joint according to this connection and separation And a valve means for preventing the combustible gas socket joint (1) from opening the flow path by mutually pushing the combustible gas socket joint (1) and the oxygen plug joint (2x). And flammable to the above oxygen socket joint (1x) And a non coupling means of the gas plug fitting (2), further comprising,
The valve means of the combustible gas joint (a) is a valve chamber formed by integrally connecting the plug guide cylinder (11) to the pipe connection body (13) of the combustible gas socket joint (1). (50), a cylindrical valve seat (52) fixed and incorporated in the valve chamber (50), and a cylindrical shape in which the end is sealed, and in the vicinity of the sealed end A through hole (51a) is provided in the cylindrical wall, and a second “0” ring (57) is attached between the through hole (51a) and the sealed end portion, and the other opening side end wall is provided on the inner wall of the end portion. An annular packing (58) is incorporated, and the sealed end portion faces the primary side of the valve chamber (50), and reciprocates through the first “o” ring (56) to the valve seat (52). The valve stem (51) incorporated so as to be movable, the packing joint surface (21b), and the annular raised portion (21c) are continuously provided. That the plug tip portion and the large-diameter cylindrical portion in succession (21) cylindrical in which (23) is provided combustible gas plug fitting (2), in the configuration,
The valve stem (51) is in the forward position, and the through hole (51a) provided in the valve stem (51) protrudes toward the valve chamber (50) in the primary direction of the valve seat (52). Thus, a flow path leading from the primary side of the valve seat (52) to the inside of the through hole (51a) is formed, the flow path of the valve chamber (50) is opened, and the valve rod (51) is in the retracted position. The second “0” ring (57) is joined to the primary side end face of the valve seat (52) to seal the flow path from the primary side of the valve chamber (50) to the through hole (51a). The flow path of the chamber (50) is closed,
The third spring (59) incorporated in a single engagement with the secondary side end face of the valve seat (52) always urges the valve rod (51) to the retracted position, and the flow path of the valve chamber (50). Is closed
The flow path of the valve chamber (50) is opened and closed by mutually pushing the combustible gas socket joint (1) and the combustible gas plug joint (2) so that the plug tip (21) is plug guide cylinder (11). ) And the packing joint surface (21b) is fitted into the annular packing (58) of the valve stem (51) in the retracted position, and the plug tip (21) is further pushed. In accordance with the forward movement, the annular inclined surface (21d) on the primary side of the annular ridge (21c) moves the valve rod (51) to the advanced position together with the annular packing (58) to flow the valve chamber (50). The channel is opened, and the normal flow gas flows out to the combustible gas plug joint (2) side. By pulling out the combustible gas plug joint (2), the third spring (59) is connected to the valve stem (51). ) Is moved to the reverse position Close the flow path of the valve chamber (50) Te,
The flammable gas plug joint (2) cannot be connected to the oxygen socket joint (1x), and the flammable gas socket joint (1) and the oxygen plug joint (2x) are pushed together. The valve means for preventing the gas socket joint (1) from opening the flow path is similar to the plug tip portion (21) of the combustible gas plug joint (2) and the plug tip portion (21). From the outer diameter of (2x) plug tip (21x) of the small oxygen plug joint and the annular ridge (21c) of the plug tip (21) of the combustible gas plug joint (2) The plug guide cylinder (11x) of the oxygen socket joint (1x) is smaller and formed with an inner diameter larger than the packing joint surface (21b) and corresponds to the plug guide portion (11d) of the socket joint for combustible gas (1). Have A flammable gas socket joint (1) having an inner diameter formed larger than the outer diameter of the packing joint surface (21bx) of the lug guide portion (11dx) and the plug tip (21x) of the oxygen plug joint (2x) ) Valve stem (51) and annular packing (58) and socket joint for combustible gas (1) formed with an inner diameter smaller than the outer diameter of the large-diameter cylindrical portion (23x) of the plug joint for oxygen (2x) A plug guide portion (11d) included in the plug guide cylinder (11).
When the plug tip (21) of the flammable gas plug joint (2) is inserted into the plug guide portion (11dx) of the plug guide cylinder (11x) of the oxygen socket joint (1x), the packing joint surface (21b) is inserted, but the annular ridge (21c) hits the inner peripheral end of the plug guide (1dx) to prevent the plug tip (21) from moving forward, disabling the connection,
When the plug tip (21x) of the oxygen plug joint (2x) is inserted into the plug guide (11d) of the plug guide cylinder (11) of the flammable gas socket joint (1), the oxygen plug With the end surface of the large-diameter cylindrical portion (23x) of the joint (2x) abutting against the end surface of the plug guide portion (11d), the annular bulge portion (21cx) moves the valve stem (51) in the valve opening direction. The packing joint surface (21bx) of the plug tip (21x) cannot be accommodated in the annular packing (58) incorporated in the valve stem (51) of the combustible gas socket joint (1), and the valve chamber (50). The flammable gas joint (a) and the oxygen joint (b) are relatively configured so as to prevent the flow path from being opened.
Further, the valve means of the combustible gas joint (a) is formed by connecting the combustible gas socket joint (1) and the pipe connector (13) integrally with the plug guide cylinder (11). A valve chamber (60), a cylindrical valve seat (62) to which an annular packing (68) is attached and fixed to the secondary side of the valve chamber (60), and an end portion is sealed. A through-hole (61a) is provided in the cylindrical wall near the sealed end, and a fourth “0” is formed between the through-hole (61a) and the sealed end. A valve which is attached to the valve seat (62) through an annular packing (68) so that the ring (67) is attached and the sealed end portion faces the primary direction of the valve chamber (60). A rod (61),
The valve stem (61) is in the forward position, and the through hole (61a) provided in the valve stem (61) is projected in the primary direction of the valve seat (62) so as to face the valve chamber (60). Thus, a flow path that leads from the primary side of the valve chamber (60) to the inside of the through hole (61a) is formed, the flow path of the valve chamber (60) is opened, and the valve rod (61) is in the retracted position. The fourth “0” ring (67) is joined to the primary side end face of the valve seat (62) to seal the flow path from the primary side of the valve chamber (60) to the through hole (61a). The flow path of the chamber (60) is closed,
The fifth spring (69) incorporated on the secondary side of the valve chamber (60) constantly urges the valve rod (61) to the retracted position, and the flow path of the valve chamber (60) is closed,
The flow path of the valve chamber (60) is opened and closed by mutually pushing the combustible gas socket joint (1) and the combustible gas plug joint (2), so that the plug tip (21) is plug guide cylinder (11). The valve stem (61) is attached to the valve seat (62) while pushing the end of the valve stem (61) with the tip of the packing joint surface (21b) of the plug tip (21) according to the advance guided by the plug guide (11d) of Is inserted into the annular packing (68), the valve rod is moved to the forward position, and the normal flow gas flows out to the combustible gas plug joint (2) side, and the combustible gas plug joint ( By pulling out 2), the fifth spring (69) moves the valve stem (61) to the retracted position to close the flow path of the valve chamber (60),
The valve means for preventing the opening of the flow path of the flammable gas socket joint (1) by mutually pushing the flammable gas socket joint (1) and the oxygen plug joint (2x) is an oxygen plug joint. In the state where the end surface of the large diameter cylindrical portion (23x) of (2x) abuts against the end surface of the plug guide portion (11d), it is formed to be smaller than the plug tip portion (21) of the plug joint (2) for combustible gas. The valve rod (61) cannot be moved in the valve opening direction at the tip of the packing joint surface (21bx) of the plug tip (21x) of the oxygen plug joint (2x), and the valve chamber (60) You may make it prevent opening of the flow path.
なお、特許請求の範囲にいう「一次側」と「二次側」とは、可燃性ガス用の継手（ａ）ならび酸素用の継手（ｂ）と、これら両継手（ａ，ｂ）の構成部分とにおいて、ガスの供給源側を「一次側」といいガスの流出側を「二次側」という。また正常流とはガスが一次側から二次側へ流れることをいう。 The “primary side” and “secondary side” referred to in the claims refer to the combustible gas joint (a) and the oxygen joint (b), and the configuration of these joints (a, b). In the section, the gas supply source side is called “primary side”, and the gas outflow side is called “secondary side”. The normal flow means that the gas flows from the primary side to the secondary side.
以上説明したように本発明は、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）とで構成された可燃性ガス用の継手（ａ）と、酸素用ソケット継手（１ｘ）と酸素用プラグ継手（２ｘ）とで構成された酸素用の継手（ｂ）のそれぞれが、ソケット継手とプラグ継手の相互押し込みで分離可能に連結する手段と、その連結と分離に従ってソケット継手の流路を開閉する弁手段と、を具備し、さらに酸素用ソケット継手（１ｘ）に可燃性ガス用プラグ継手（２）を連結不能な手段と、可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、可燃性ガス用ソケット継手（１）弁室（５０）の流路を開くことを阻止するように、可燃性ガス用の継手（ａ）と酸素用の継手（ｂ）とが相対的に形成されているため、可燃性ガスと酸素とにおいて、ソケット継手に用途の異なるプラグ継手を誤って接続されても、そのプラグ継手側の配管経路にガスが流れるのを防止できるため、溶接・溶断作業の安全性の向上が図れる。 As described above, the present invention includes a combustible gas joint (a) composed of a combustible gas socket joint (1) and a combustible gas plug joint (2), an oxygen socket joint (1x ) And the oxygen plug joint (2x), each of the oxygen joints (b) is connected to the socket joint and the plug joint so as to be separable by mutual pushing, and the socket joint according to the connection and separation. A valve means for opening and closing the flow path, and means for preventing the connection of the flammable gas plug joint (2) to the oxygen socket joint (1x), the flammable gas socket joint (1) and the oxygen joint Combustible gas joint (a) and oxygen joint so that the plug joint (2x) is pressed against each other to prevent opening of the combustible gas socket joint (1) valve chamber (50). (B) is relatively formed Therefore, even if flammable gas and oxygen are connected to a socket joint with a different type of plug joint by mistake, it is possible to prevent gas from flowing into the piping path on the side of the plug joint. Can be improved.
以下、図面に示す実施するための最良の形態により、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.
図１に示すように本発明の溶断用ガス流路の継手は、可燃性ガス用の継手（ａ）と酸素用の継手（ｂ）とで構成されている。上記可燃性ガス用の継手（ａ）は、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）とで構成され、上記酸素用の継手（ｂ）は、酸素用ソケット継手（１ｘ）と酸素用プラグ継手（２ｘ）とで構成され、この酸素用の継手（ｂ）が、可燃性ガス用の継手（ａ）の構成部分と同一の形態を有して相似的に小さく形成されている。
これら可燃性ガス用の継手（ａ）と酸素用の継手（ｂ）のそれぞれにおいて、ソケット継手とプラグ継手の相互押し込みで分離可能に連結する手段と、この連結と分離に従ってガスの流路を開閉する弁手段とを同様に具備し、ソケット継手とプラグ継手が連結されて正常流のガスは、ソケット継手の一次側からプラグ継手の二次側へ流れる。
上記ソケット継手とプラグ継手の分離可能に連結する手段と、この連結と分離に従ってガスの流路を開閉する弁手段について、上記両継手（ａ，ｂ）が構成部分の形態と作用効果を同一に有しているため可燃性ガス用の継手（ａ）をもって以下に説明する。As shown in FIG. 1, the fusing gas flow passage joint of the present invention is composed of a combustible gas joint (a) and an oxygen joint (b). The joint for combustible gas (a) is composed of a socket joint for combustible gas (1) and a plug joint for combustible gas (2), and the joint for oxygen (b) is a socket joint for oxygen. (1x) and an oxygen plug joint (2x), and this oxygen joint (b) has the same form as the constituent parts of the combustible gas joint (a) and is similarly small. Is formed.
In each of the flammable gas joint (a) and the oxygen joint (b), a means for connecting the socket joint and the plug joint so as to be separable, and a gas flow path is opened and closed according to the connection and separation. The valve joint is similarly provided, and the socket joint and the plug joint are connected to each other so that the normal flow gas flows from the primary side of the socket joint to the secondary side of the plug joint.
With respect to the means for detachably connecting the socket joint and the plug joint, and the valve means for opening and closing the gas flow path in accordance with the connection and separation, both the joints (a, b) have the same form and function and effect. Since it has, it demonstrates below with the joint (a) for combustible gas.
上記可燃性ガス用ソケット継手（１）は、ホースに接続される第１ホース接続部（１３ｂ）に筒部（１３ａ）が一体に連なる配管接続体（１３）と、その配管接続体（１３）の筒部（１３ａ）の内周部にネジ填め合いして弁室（５０）を形成する筒部（１１ｅ）に、後述のプラグ継手（２）のプラグ先端部（２１）を往復動可能に案内するプラグ案内部（１１ｄ）が一体に連なるプラグ案内筒体（１１）と、上記弁室（５０）内に組み込まれた弁手段と、上記プラグ案内筒体（１１）の外周面を回転と往復動可能に遊嵌された筒状の着脱筒体（１２）と、上記プラグ案内筒体（１１）と着脱筒体（１２）との環状の空間端部に組み込まれたスプリング受座（５３）と、で主として構成されている。なお第１ホース接続部（１３ｂ）が、配管用のネジ接続手段であってもよい（図示略）。 The combustible gas socket joint (1) includes a pipe connection body (13) in which a cylinder part (13a) is integrally connected to a first hose connection part (13b) connected to a hose, and the pipe connection body (13). A plug tip (21) of a plug joint (2), which will be described later, can be reciprocated in a cylinder (11e) that forms a valve chamber (50) by screwing into the inner periphery of the cylinder (13a). A plug guide cylinder (11) in which a plug guide portion (11d) for guiding is integrally connected, valve means incorporated in the valve chamber (50), and an outer peripheral surface of the plug guide cylinder (11) are rotated. A cylindrical detachable cylinder (12) loosely fitted so as to be reciprocally movable, and a spring seat (53) incorporated in the annular space end of the plug guide cylinder (11) and the detachable cylinder (12). ) And. In addition, the 1st hose connection part (13b) may be the screw connection means for piping (illustration omitted).
上記可燃性ガス用プラグ継手（２）は、プラグ先端部（２１）と、大径筒部（２３）と第２ホース接続部（２２）と、が連続して一体となって円筒状に形成され、そのプラグ先端部（２１）が、後述の弁棒（５１）に取り付けられた環状のパッキン（５８）に気密状に填め合いするパッキン接合面（２１ｂ）と、環状の隆起部（２１ｃ）と、連結溝（２１ａ）と、上記環状の隆起部（２１ｃ）と同じ外径の筒部（２１ｆ）とが、これら一体に連なって形成されている。なお第２ホース接続部（２２）が、配管用ネジ接続手段であってもよい（図示略）。 The plug joint (2) for the combustible gas is formed in a cylindrical shape by continuously integrating the plug tip (21), the large-diameter cylindrical portion (23), and the second hose connecting portion (22). The plug tip (21) is hermetically fitted into an annular packing (58) attached to a valve stem (51), which will be described later, and an annular ridge (21c). The connecting groove (21a) and the cylindrical portion (21f) having the same outer diameter as the annular raised portion (21c) are integrally formed. Note that the second hose connection portion (22) may be a screw connection means for piping (not shown).
上記弁手段は、弁室（５０）に固定された弁座（５２）の内周部を、後述の前進位置と後退位置とを往復動可能に組み込まれた弁棒（５１）の位置に従って、弁室（５０）の流路が開閉される。 The valve means follows the position of the valve rod (51) incorporated in the inner periphery of the valve seat (52) fixed to the valve chamber (50) so as to be able to reciprocate between an advance position and a retract position, which will be described later. The flow path of the valve chamber (50) is opened and closed.
上記弁棒（５１）は、小径筒部（５１ｃ）に大径筒部（５１ｂ）が一体に連なって、その小径部（５１ｃ）の端部が封じられた円筒状に形成され、その封じられた小径筒部（５１ｃ）の端部近傍の筒壁に複数の通し穴（５１ａ）が形成され、上記大径筒部（５１ｂ）の内周面に環状の溝が形成されて、プラグ先端部（２１）のパッキン接合面（２１ｂ）に気密状に填め合いする円筒状の環状のパッキン（５８）が組み込まれ、通し穴（５１ａ）近傍の大径筒部（５１ｂ）側方向に位置して、第１“０”リング（５６）が取り付けられている。
さらに上記弁棒（５１）は、小径筒部（５１ｃ）の外周に大径筒部（５１ｂ）の段部端面と、外方フランジ部を有して円筒状に形成された弁座（５２）の、その外方フランジとの間で挟持されるように、第３スプリング（５９）が取り付けられて小径筒部（５１ｃ）の先端側が上記第１“０”リング（５６）を介して弁座（５２）に組み込まれ、この小径筒部（５１ｃ）の封じられた端部近傍と通し穴（５１ａ）との間に、第２“０”リング（５７）が取り付けられている。
上記弁座（５２）は、上記弁棒（５１）が組み込まれて、外方フランジ部が第３“０”リング（５２ａ）を介し、配管接続体（１３）の筒部（１３ａ）の内周段部と、プラグ案内筒体（１１）の筒部（１１ｅ）の端面との間に気密状に挟持されて弁室（５０）内に固定されている。The valve stem (51) is formed in a cylindrical shape in which the large-diameter cylindrical portion (51b) is integrally connected to the small-diameter cylindrical portion (51c), and the end of the small-diameter portion (51c) is sealed. A plurality of through holes (51a) are formed in the cylindrical wall near the end of the small-diameter cylindrical portion (51c), and an annular groove is formed in the inner peripheral surface of the large-diameter cylindrical portion (51b). A cylindrical annular packing (58) that fits in a gastight manner is incorporated into the packing joint surface (21b) of (21), and is located in the direction of the large-diameter cylindrical portion (51b) near the through hole (51a). A first “0” ring (56) is attached.
Furthermore, the valve stem (51) has a stepped end surface of the large diameter cylindrical portion (51b) and an outer flange portion on the outer periphery of the small diameter cylindrical portion (51c), and a valve seat (52) formed in a cylindrical shape. The third spring (59) is attached so as to be sandwiched between the outer flange and the distal end side of the small diameter cylindrical portion (51c) via the first “0” ring (56). The second “0” ring (57) is attached between the vicinity of the sealed end of the small diameter cylindrical portion (51c) and the through hole (51a).
The valve seat (52) incorporates the valve stem (51), and the outer flange portion is connected to the inside of the tube portion (13a) of the pipe connection body (13) via the third “0” ring (52a). It is clamped in an airtight manner between the circumferential step portion and the end surface of the cylindrical portion (11e) of the plug guide cylindrical body (11) and is fixed in the valve chamber (50).
上記弁棒（５１）が、弁室（５０）の流路を開く前進位置と、その流路を閉じる後退位置とを上記第１“０”リング（５６）を介し弁座（５２）の内周部を往復動し、弁棒（５１）が前進位置に存して、その弁棒（５１）の通し穴（５１ａ）が弁座（５２）の一次側方向に弁室（５０）に臨むように出て、弁室（５０）内の弁座（５２）の一次側から通し穴（５１）の外側から内側に通じる流路が形成されて弁室（５０）の流路が開かれ、弁棒（５１）が後退位置に存して、その弁棒（５１）に取り付けられた上記第２“０”リング（５７）が、弁座（５２）の一次側端面に気密状に接合して、弁室（５０）の一次側から通し穴（５１ａ）に通じる流路を封じる。上記弁棒（５１）が、弁座（５２）に片係した第３スプリング（５９）によって常に二次側に付勢され、後退位置に存して弁室（５０）の流路が閉じられる。 The valve stem (51) has an advanced position for opening the flow path of the valve chamber (50) and a retracted position for closing the flow path within the valve seat (52) via the first “0” ring (56). The valve rod (51) is in the forward position, and the through hole (51a) of the valve rod (51) faces the valve chamber (50) in the primary direction of the valve seat (52). The flow path from the primary side of the valve seat (52) in the valve chamber (50) to the inside from the outside of the through hole (51) is formed to open the flow path of the valve chamber (50), When the valve stem (51) is in the retracted position, the second “0” ring (57) attached to the valve stem (51) is joined to the primary side end face of the valve seat (52) in an airtight manner. Then, the flow path leading from the primary side of the valve chamber (50) to the through hole (51a) is sealed. The valve stem (51) is always urged to the secondary side by the third spring (59) unilaterally engaged with the valve seat (52), and the flow path of the valve chamber (50) is closed in the retracted position. .
上記弁室（５０）の流路の開閉は、可燃性ガス用プラグ継手（２）のプラグ先端部（２１）によって行われる。このプラグ先端部（２１）がプラグ案内部（１１ｄ）に押し込まれ、そのプラグ先端部（２１）のパッキン接合面（２１ｂ）が、第３スプリング（５９）によって常に二次側に付勢されている弁棒（５１）の大径筒部（５１ｂ）に組み込まれた環状のパッキン（５８）に気密状に填め合いし、さらなる押し込みによって、プラグ先端部（２１）の環状の隆起部（２１ｃ）に有する環状の斜面（２１ｄ）が、弁棒（５１）の大径部（５１ｂ）に組み込まれている環状のパッキン（５８）を介して、この弁棒（５１）を前進位置へと移動させて弁室（５０）の流路を開き、上記可燃性ガス用プラグ継手（２）を引き出すことによって、弁座（５２）に片係した第３スプリング（５９）が弁棒（５１）を後退位置に移動させて、その弁棒（５１）に取り付けられた第２“０”リング（５７）が、弁座（５２）の端面に気密状に接合して弁室（５０）の流路が閉じられる。 The valve chamber (50) is opened and closed by the plug tip (21) of the combustible gas plug joint (2). The plug tip (21) is pushed into the plug guide (11d), and the packing joint surface (21b) of the plug tip (21) is always urged to the secondary side by the third spring (59). Is fitted in an annular packing (58) incorporated in the large-diameter cylindrical portion (51b) of the valve stem (51), and is further pushed into the annular bulge portion (21c) of the plug tip portion (21). The annular inclined surface (21d) has a valve rod (51) moved to a forward position via an annular packing (58) incorporated in the large diameter portion (51b) of the valve rod (51). The valve spring (50) is opened, and the plug joint (2) for the combustible gas is pulled out, so that the third spring (59) unilaterally engaged with the valve seat (52) retracts the valve stem (51). Moved to position and on its valve stem (51) Ri Tagged second "0" ring (57) is, the flow path of the valve chamber and joined to the end surface of the valve seat (52) in an airtight manner (50) is closed.
上記可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の分離可能に連結する手段は、プラグ先端部（２１）を案内する可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）と、そのプラグ案内部（１１ｄ）の大径筒壁に設けられた連結球穴（１１ａ）と、この連結球穴（１１ａ）に浮動可能に埋め込まれた連結球（１４）と、この連結球（１４）が係り合いするプラグ先端部（２１）に設けられた連結溝（２１ａ）と、内周面に環状に隆起した平坦面を有した連結球係止面（１２ａ）が設けらて、上記プラグ案内筒体（１１）を回転と往復動可能な着脱筒体（１２）と、この着脱筒体（１２）とプラグ案内筒体（１１）との環状の空間端部に往復動可能に組み込まれ、プラグ案内筒体（１１）と着脱筒体（１２）とを互いに結合させるスプリング受座（５３）と、で主として構成されている。 The means for detachably connecting the combustible gas socket joint (1) and the combustible gas plug joint (2) is a plug guide for the combustible gas socket joint (1) for guiding the plug tip (21). A plug guide portion (11d) included in the cylindrical body (11), a connecting ball hole (11a) provided in a large-diameter cylindrical wall of the plug guide portion (11d), and the connecting ball hole (11a) can float. The embedded connecting sphere (14), the connecting groove (21a) provided in the plug tip (21) with which the connecting sphere (14) is engaged, and a flat surface that is annularly raised on the inner peripheral surface A detachable cylinder (12) provided with a connecting ball locking surface (12a) and capable of rotating and reciprocating the plug guide cylinder (11), and the detachable cylinder (12) and the plug guide cylinder (11). ) And is installed in the annular space end so that it can reciprocate. 11) and the detachable barrel body (12) spring seat for the the coupled together (53), in which mainly configured.
上記連結球（１４）は、プラグ案内部（１１ｄ）の大径側の筒壁まわりに等間隔で設けられた複数の連結球穴（１１ａ）にそれぞれ埋め込まれている。この連結球穴（１１ａ）は、穴の中心がプラグ案内部（１１ｄ）の中心方向に垂直に、そして筒壁の外周面側の直径が連結球（１４）の最大直径より大きく、内周面方向に進に従い小さくなる円錐状に形成され、連結球（１４）の最大直径が連結球穴（１１ａ）の最小直径より大きく形成されていて、連結球（１４）が連結球穴（１１ａ）から内側に飛び出るのを防止している。この連結球（１４）が、プラグ先端部（２１）の連結溝（２１ａ）に係合いして、プラグ案内筒体（１１）とプラグ先端部（２１）とを互いに連結する。 The connecting sphere (14) is embedded in a plurality of connecting sphere holes (11a) provided at equal intervals around the cylindrical wall on the large diameter side of the plug guide (11d). The connecting ball hole (11a) has an inner peripheral surface in which the center of the hole is perpendicular to the center direction of the plug guide portion (11d) and the diameter on the outer peripheral surface side of the cylindrical wall is larger than the maximum diameter of the connecting ball (14). It is formed in a conical shape that becomes smaller as it progresses in the direction, the maximum diameter of the connecting ball (14) is larger than the minimum diameter of the connecting ball hole (11a), and the connecting ball (14) extends from the connecting ball hole (11a). Prevents jumping inward. The connecting ball (14) engages with the connecting groove (21a) of the plug tip (21) to connect the plug guide cylinder (11) and the plug tip (21) to each other.
上記着脱筒体（１２）は、筒部（１２ｅ）と、内周面が連結球（１４）を連結溝（２１ａ）に滑らかに埋めこむための環状の斜面（１２ｂ）と、環状に隆起して形成された連結球係止面（１２ａ）と、が連続に有して形成され、プラグ案内筒体（１１）に回転と往復動可能に組み込まれている。
上記着脱筒体（１２）が後退位置に存して、連結球係止面（１２ａ）が連結球（１４）の位置から二次側方向に遠ざかって、その着脱筒体（１２）の筒部（１２ｅ）の内周面とプラグ案内部（１１ｄ）の大径側外周面との環状の空間に、連結球（１４）を浮動状態にならしめる環状空間（１２ｃ）が形成され、この環状空間（１２ｃ）が形成された状態で、プラグ案内筒体（１１）とプラグ先端部（２１）の着脱が行われる。着脱筒体（１２）が一次側方向の前進位置に存するときは、連結球係止面（１２ａ）が連結球（１４）の一部が連結溝（２１ａ）に填っているその連結球（１４）を押さえて係止めし、上記プラグ案内筒体（１１）とプラグ先端部（２１）を互いに連結する。The detachable cylindrical body (12) has a cylindrical portion (12e), an annular slope (12b) whose inner peripheral surface smoothly embeds the coupling sphere (14) in the coupling groove (21a), and an annular bulge. The connecting ball locking surface (12a) formed in this manner is continuously formed and is incorporated in the plug guide cylinder (11) so as to be able to rotate and reciprocate.
The detachable cylinder (12) is in the retracted position, and the connecting ball locking surface (12a) moves away from the position of the connecting sphere (14) in the secondary direction, so that the cylinder portion of the detachable cylinder (12) An annular space (12c) for allowing the connecting sphere (14) to float is formed in an annular space between the inner peripheral surface of (12e) and the outer peripheral surface of the large diameter side of the plug guide portion (11d). With the (12c) formed, the plug guide cylinder (11) and the plug tip (21) are attached and detached. When the detachable cylindrical body (12) is in the primary position, the connecting ball locking surface (12a) is connected to the connecting ball (21a) partially connected to the connecting ball (21a). 14), the plug guide tube (11) and the plug tip (21) are connected to each other.
上記スプリング受座（５３）は、内方フランジ（５３ａ）と外方フランジ（５３ｂ）を一体に有して円筒状に形成され、その内方フランジ（５３ａ）を、プラグ案内筒体（１１）の端部近傍に填め込まれた止め輪（５４）に係り合いさせることにより、プラグ案内筒体（１１）に回転と往復動可能に結合され、外方フランジ（５３ｂ）を、着脱筒体（１２）の端部を内側に絞り込んで形成されたその内側の環状端面（１２ｇ）と、この着脱筒体（１２）の連結球係止面（１２ａ）の段部端面との環状の空間に往復動可能に係り合いさせることにより、着脱筒体（１２）がプラグ案内筒体（１１）に対して結合される。さらに第１スプリング（１５）が、内方フランジ（５３ａ）とプラグ案内部（１１ｄ）の外周段部との間に組み込まれ、スプリング受座（５３）を常に二次側方向に押している。第２スプリング（５５ａ）が、着脱筒体（１２）の連結球係止面（１２ａ）の二次側の段部端面と外方フランジ（５３ｂ）との間に組み込まれ、スプリング受座（５３）の一次側方向への移動に従って、着脱筒体（１２）をこのプリング受座（５３）に対し一次側に移動させるように作用する。 The spring seat (53) is formed in a cylindrical shape integrally including an inner flange (53a) and an outer flange (53b), and the inner flange (53a) is formed as a plug guide cylinder (11). By engaging with a retaining ring (54) fitted in the vicinity of the end of the plug, it is coupled to the plug guide cylinder (11) so as to be able to rotate and reciprocate, and the outer flange (53b) is connected to the removable cylinder ( 12) The inner annular end surface (12g) formed by narrowing the end portion inward and the annular space between the stepped end surface of the connecting ball locking surface (12a) of the removable cylinder (12). The detachable cylinder (12) is coupled to the plug guide cylinder (11) by being engaged in a movable manner. Further, the first spring (15) is incorporated between the inner flange (53a) and the outer peripheral step portion of the plug guide portion (11d), and always pushes the spring seat (53) in the secondary direction. A second spring (55a) is incorporated between the stepped end surface on the secondary side of the connecting ball locking surface (12a) of the removable cylindrical body (12) and the outer flange (53b), and the spring seat (53 ) Acts to move the detachable cylinder (12) to the primary side with respect to the pulling seat (53).
上記可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）が、それぞれ相互押し込みで自動的に連結され、その連結は上記着脱筒体（１２）の二次側への後退操作で分離される。これら両継手の連結と分離に連動するガスの流路の開閉について以下に総合的に説明する。 The socket joint (1) for the flammable gas and the plug joint (2) for the flammable gas are automatically connected to each other by pushing in each other, and the connection is performed by retracting the detachable cylinder (12) to the secondary side. Separated by The opening and closing of the gas flow path linked to the connection and separation of these two joints will be comprehensively described below.
図１の可燃性ガス用の継手（ａ）に示すように、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ側手（２）とが分離されている状態において、可燃性ガス用ソケット継手（１）の着脱筒体（１２）は、プラグ案内筒体（１１）の外周の二次側段部に片係りした第１スプリング（１５）に付勢されたスプリング受座（５）に押されて二次側の後退位置に存し、プラグ案内筒体（１１）の連結球穴（１１ａ）に埋められた連結球（１４）が、上記着脱筒体（１２）とプラグ案内筒体（１１）とで形成された環状空間（１２ｃ）に浮動状態となっている。そして弁室（５０）内においては、第３スプリング（５９）が弁座（５２）に片係して弁棒（５１）を二次側に付勢していて、この弁棒（５１）に固定された第２”０”リング（５７）が、弁座（５２）の一次側端面に気密状に接合して弁室（５０）の流路を閉じ、可燃性ガス用ソケット継手（１）の流路は閉じられている。 As shown in the combustible gas joint (a) in FIG. 1, the combustible gas socket joint (1) and the combustible gas plug side hand (2) are separated from each other. The detachable cylinder (12) of the socket joint (1) has a spring seat (5) urged by a first spring (15) that is unilaterally engaged with a secondary step on the outer periphery of the plug guide cylinder (11). The connecting sphere (14), which is pushed to the secondary side and is buried in the connecting ball hole (11a) of the plug guide cylinder (11), is connected to the detachable cylinder (12) and the plug guide cylinder. It is in a floating state in an annular space (12c) formed by the body (11). In the valve chamber (50), the third spring (59) is engaged with the valve seat (52) to urge the valve rod (51) to the secondary side, and the valve rod (51) The fixed second “0” ring (57) is joined to the primary side end face of the valve seat (52) in an airtight manner to close the flow path of the valve chamber (50), and the combustible gas socket joint (1) The flow path of is closed.
上記可燃性ガス用ソケット側継手（１）と可燃性ガス用プラグ側継手（２）の相互押し込みで、この可燃性ガス用プラグ継手（２）のプラグ先端部（２１）が、スプリング受座（５３）そしてプラグ案内筒体（１１）のプラグ案内部（１１ｄ）に案内されて挿入され、このプラグ先端部（２１）の環状の斜面（２１ｄ）が、上記浮動状態の連結球（１４）を連結球穴（１１ａ）から環状空間（１２ｃ）にその一部をはじき出して環状の隆起部（２１ｃ）が移動可能となり、このプラグ先端部（２１）のパッキン接合面（２１ｂ）が、弁室（５０）内の弁棒（５１）に取りつけた環状のパッキン（５８）に嵌め込まれる。
さらなる押し込みでプラグ先端部（２１）が前進すると、上記環状の隆起部（２１ｃ）の外周面が連結球（１４）を環状空間（１２ｃ）に押し出したまま前進し、その前進に従ってプラグ先端部（２１）の環状の斜面（２１ｄ）が、環状のパッキン（５８）を介して弁棒を（５１）を押し、その弁棒（５１）の通し穴（５１ａ）が弁座（５２）の一次側に出されて弁室（５０）の流路が開かれ、可燃性ガス用ソケット継手（１）から可燃性ガス用プラグ継手（２）に通ずる流路が形成される（図２）。When the above-mentioned combustible gas socket side joint (1) and the combustible gas plug side joint (2) are pushed together, the plug tip (21) of the combustible gas plug joint (2) is connected to a spring seat ( 53) Then, the plug guide cylinder (11) is guided and inserted into the plug guide portion (11d), and the annular inclined surface (21d) of the plug tip end portion (21) is connected to the floating connection ball (14). A part of the connecting ball hole (11a) is ejected into the annular space (12c) so that the annular raised portion (21c) can move, and the packing joint surface (21b) of the plug tip (21) is connected to the valve chamber (21b). 50) is fitted into an annular packing (58) attached to the valve stem (51).
When the plug tip (21) moves forward by further pushing, the outer peripheral surface of the annular ridge (21c) moves forward while pushing the connecting ball (14) into the annular space (12c), and the plug tip ( 21) The annular slope (21d) pushes the valve stem (51) through the annular packing (58), and the through hole (51a) of the valve stem (51) is the primary side of the valve seat (52). And the flow path of the valve chamber (50) is opened, and a flow path from the combustible gas socket joint (1) to the combustible gas plug joint (2) is formed (FIG. 2).
一方、上記プラグ先端部（２１）のパッキン接合面（２１ｂ）が、弁室（５０）内の弁棒（５１）に組み込まれた環状のパッキン（５８）に気密状に填め合いされる際、可燃性ガス用プラグ継手（２）の大径筒部（２３）の端面によって、第１スプリング（１５）の押力に抗してスプリング受座（５３）を可燃性ガス用プラグ継手（２）の前進方向に押し、この押し込みによって圧縮させられた第２スプリング（５５ａ）が、着脱筒体（１２）を一次側方向に前進するように押し、そして上記プラグ先端部（２１）の連結溝（２１ａ）が連結球（１４）の位置に達したとき、上記着脱筒体（１２）が、環状の斜面（１２ｂ）によって連結球（１４）を連結溝（２１ａ）に埋め込みながら前進して、連結球係止面（１２ａ）が連結溝（２１ａ）に填った連結球（１４）を押さえて係り止めし、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の連結が完了する（図２）。 On the other hand, when the packing joint surface (21b) of the plug tip (21) is fitted in an airtight manner to the annular packing (58) incorporated in the valve stem (51) in the valve chamber (50), The end face of the large-diameter cylindrical portion (23) of the combustible gas plug joint (2) causes the spring seat (53) to resist the pressing force of the first spring (15), and the combustible gas plug joint (2). The second spring (55a) compressed in this forward direction and compressed by this push-in pushes the removable cylinder (12) so as to advance in the primary direction, and the connecting groove ( When 21a) reaches the position of the connecting ball (14), the detachable cylinder (12) moves forward while the connecting ball (14) is embedded in the connecting groove (21a) by the annular slope (12b). Ball locking surface (12a) is connected groove (21a) Hold fits ligation spheres (14) fasten relates, coupling of the combustible gas socket joint (1) and the combustible gas plug fitting (2) is completed (FIG. 2).
上記可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）との連結の切り離しは、着脱筒体（１２）を二次側方向へ直線的に後退させる操作で、連結球（１４）を環状空間（１２ｃ）に浮動にならしめ、第１スプリング（１５）によって二次側に付勢されているスプリング受座（５３）が、可燃性ガス用プラグ継手（２）の大径筒部（２３）の端面を押して、この可燃性ガス用プラグ継手（２）を引き抜く方向へ移動させるように働き、同時に第３スプリング（５９）が弁棒（５１）を二次側に付勢しているその弁棒（５１）に取り付けられた環状のパッキン（５８）を介して、プラグ先端部（２１）の環状の斜面（２１ｄ）を二次側に押し、上記環状空間（１２ｃ）に連結球穴（１１ａ）から浮動となっている連結球（１４）を、環状の隆起部（２１ｃ）の二次側環状の斜面（２１ｅ）で、連結球穴（１１ａ）からその一部を外側へはじき出して連結が自動的に切り離される。その連結の切り離しに従って第３スプリング（５９）に付勢されていた弁棒（５１）が後退位置へ移動させられ、この弁棒（５１）に取り付けられている第２”０”リング（５７）が、弁座（５２）の端面に気密状に接合して弁室（５０）の流路を閉じ、そして上記第１スプリング（１５）が二次側に付勢しているスプリング受座（５３）によって、可燃性ガス用プラグ継手（２）の大径筒部（２３）の端面を押して、弁棒（５１）に組み込まれている環状のパッキン（５８）からプラグ先端部（２１）のパッキン接合面（２１ｂ）が引き抜かれる。 The connection between the socket joint for combustible gas (1) and the plug joint for combustible gas (2) is disconnected by an operation of receding the detachable cylinder (12) linearly in the secondary direction. 14) floats in the annular space (12c), and the spring seat (53) biased to the secondary side by the first spring (15) has a large diameter of the plug joint (2) for the combustible gas. The end face of the tube portion (23) is pushed to move the combustible gas plug joint (2) in the pulling direction, and at the same time, the third spring (59) biases the valve stem (51) to the secondary side. The annular slope (21d) of the plug tip (21) is pushed to the secondary side via the annular packing (58) attached to the valve stem (51), and the annular space (12c) is pushed into the annular space (12c). Connecting ball (14) floating from connecting ball hole (11a) , The secondary side annular slope of the annular ridge (21c) (21e), connection is automatically disconnected by flipping the coupling ball holes (11a) a part outward. According to the disconnection, the valve rod (51) biased by the third spring (59) is moved to the retracted position, and the second “0” ring (57) attached to the valve rod (51). However, it is joined to the end face of the valve seat (52) in an airtight manner to close the flow path of the valve chamber (50), and the first spring (15) is biased toward the secondary side (53). ) To push the end face of the large-diameter cylindrical portion (23) of the plug joint for combustible gas (2), so that the packing of the plug tip portion (21) from the annular packing (58) incorporated in the valve stem (51) The joint surface (21b) is pulled out.
さらに本発明は、図１に示す可燃性ガス用の継手（ａ）と酸素用の継手（ｂ）とが相対的に形成され、可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の弁室（５０）の流路を開くことを不能とする弁手段と、酸素用ソケット継手（１ｘ）には可燃性ガス用プラグ継手（２）が連結不能な手段を有して、ソケット継手に用途の異なるプラグを接続してもプラグ継手側の配管経路にガスを流さない。 Further, in the present invention, the combustible gas joint (a) and the oxygen joint (b) shown in FIG. 1 are formed relatively, and the combustible gas socket joint (1) and the oxygen plug joint (2x ), The valve means for making it impossible to open the flow path of the valve chamber (50) of the combustible gas socket joint (1), and the oxygen socket joint (1x) has a combustible gas plug. Even if the joint (2) has means that cannot be connected, and a plug having a different use is connected to the socket joint, gas does not flow through the piping path on the plug joint side.
上記両手段は、酸素用プラグ継手の（２ｘ）のプラグ先端部（２１ｘ）の長さが、可燃性ガス用プラグ継手（２）のプラグ先端部（２１）より短く形成され、可燃性ガス用ソケット継手（１）の弁室（５０）の弁座（５２）に組み込まれた弁棒（５１）の環状のパッキン（５８）ならび弁棒（５１）の小径筒部（５１ｃ）の内径が、酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）に設けられたパッキン接き面（２１ｂｘ）が往復動可能な大きさに形成され、さらに可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）の内径が、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の外径より小さく形成され、また酸素用ソケット継手（１ｘ）のプラグ案内筒体（１１ｘ）に有するプラグ案内部（１１ｄｘ）内径が、可燃性ガス用プラグ継手（２）の環状の隆起部（２１ｃ）の外径より小さくてパッキン接合面（２１ｂ）の外径より大きく形成され、可燃性ガス用の継手（ａ）と酸素用の継手（ｂ）とが相似的に形成されているうえに、相対的に形成されている。
このことによって可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）のプラグ案内部（１１ｄ）に、酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）が押し込まれた際、この酸素用プラグ（２ｘ）の大径筒部（２３ｘ）の端面が、プラグ案内部（１１ｄ）の端面に突き当たった状態において、プラグ先端部（２１ｘ）の環状の隆起部（２１ｃｘ）によって、環状のパッキン（５８）を介して弁棒（５１）の移動を不能にプラグ先端部（２１ｘ）のパッキン接合面（２１ｂｘ）が環状のパッキン（５８）の内部に納まって、酸素用プラグ継手（２ｘ）によって、可燃性ガス用ソケット継手（１）の弁棒（５１）を一次側への移動を阻止して弁室（５０）の流路を開かず、上記酸素用のプラグ継手（２ｘ）に接続される配管経路に可燃性ガスが流れることを防止できる（図３）。
また、酸素用ソケット継手（１ｘ）のプラグ案内筒体（１１ｘ）に有するプラグ案内部（１１ｄｘ）内径が、可燃性ガス用プラグ継手（２）に有する環状の隆起部（２１ｃ）の外径より小さく形成されているため、この酸素用ソケット継手（１ｘ）には可燃性ガス用プラグ継手（２）が連結不能となる（図示略）。Both of the above means are such that the length of the plug tip (21x) of the (2x) plug joint for oxygen is formed shorter than the plug tip (21) of the plug joint (2) for combustible gas. The inner diameter of the annular packing (58) of the valve stem (51) incorporated in the valve seat (52) of the valve chamber (50) of the socket joint (1) and the small diameter cylindrical portion (51c) of the valve stem (51) is The packing contact surface (21bx) provided at the plug tip (21x) of the oxygen plug joint (2x) is formed to a size capable of reciprocating, and the plug guide cylinder of the combustible gas socket joint (1). The inner diameter of the plug guide portion (11d) of the body (11) is smaller than the outer diameter of the large diameter cylindrical portion (23x) of the oxygen plug joint (2x), and the plug guide of the oxygen socket joint (1x). Plug guide portion (1) included in the cylinder (11x) dx) The inner diameter is smaller than the outer diameter of the annular ridge (21c) of the combustible gas plug joint (2) and larger than the outer diameter of the packing joint surface (21b), and the combustible gas joint (a ) And the joint for oxygen (b) are formed in a similar manner and relatively formed.
As a result, when the plug tip (21x) of the plug joint for oxygen (2x) is pushed into the plug guide (11d) of the plug guide cylinder (11) of the socket joint for combustible gas (1), When the end surface of the large-diameter cylindrical portion (23x) of the oxygen plug (2x) abuts against the end surface of the plug guide portion (11d), the annular ridge (21cx) of the plug tip portion (21x) The valve stem (51) cannot be moved via the packing (58), and the packing joint surface (21bx) of the plug tip (21x) is accommodated in the annular packing (58), so that the plug joint for oxygen (2x) Prevents the valve rod (51) of the socket joint (1) for the combustible gas from moving to the primary side and does not open the flow path of the valve chamber (50), but connects to the plug joint (2x) for oxygen. Applicable to the piping route Possible to prevent the sexual gas flows (Figure 3).
Further, the inner diameter of the plug guide part (11dx) of the plug guide cylinder (11x) of the oxygen socket joint (1x) is larger than the outer diameter of the annular ridge (21c) of the plug joint for combustible gas (2). Since it is formed small, the plug joint (2) for combustible gas cannot be connected to the socket joint for oxygen (1x) (not shown).
また、図４に示すように可燃性ガス用ソケット継手（１）の弁手段が、 配管接続体（１３）にプラグ案内筒体（１１）が一体に結合して形成された弁室（６０）と、環状のパッキン（６８）が取り付けられて上記弁室（６０）内に固定されて組み込まれた円筒状の弁座（６２）と、端部が封じられた円筒状に形成されて、その封じられた端部近傍の筒壁に通し穴（６１ａ）が設けられ、この通し穴（６１ａ）と端部との間に第４“０”リング（６７）が取り付けられ、この通し穴（６１ａ）が設けられた端部側が、弁室（６０）一次側方向を向いて上記弁座（６２）に往復動可能に組み込まれた弁棒（６１）と、で構成されてもよい。
この図４に示す可燃性ガス用ソケット継手（１）の以下の説明において、図１に示して前述した可燃性ガス用ソケット継手（１）の最良の実施形態と同一の構成部分には、同一の符号を付して重複する説明を省略する。Further, as shown in FIG. 4, the valve means of the combustible gas socket joint (1) is formed by integrating the plug guide cylinder (11) with the pipe connection body (13). And a cylindrical valve seat (62) to which an annular packing (68) is attached and fixed and incorporated in the valve chamber (60), and a cylindrical shape whose end is sealed. A through hole (61a) is provided in the cylindrical wall near the sealed end, and a fourth “0” ring (67) is attached between the through hole (61a) and the end, and this through hole (61a ) May be configured with a valve rod (61) that is incorporated in the valve seat (62) so as to be able to reciprocate toward the primary side of the valve chamber (60).
In the following description of the combustible gas socket joint (1) shown in FIG. 4, the same components as those of the best embodiment of the combustible gas socket joint (1) shown in FIG. The description which overlaps and abbreviate | omits is abbreviate | omitted.
上記弁棒（６１）は、配管接続体（１３）の内周段部に片係りして組み込まれる第５スプリング（６９）が取り付けられ、弁座（６２）に環状のパッキン（６８）を介して組み込まれ、この弁座（６２）が上記配管接続体（１３）とプラグ案内筒体（１１）とがネジ嵌め合いして弁室（６０）を形成される際に組み込まれる。 The valve stem (61) is provided with a fifth spring (69) that is incorporated in a single engagement with the inner peripheral step of the pipe connection body (13), and the valve seat (62) via an annular packing (68). This valve seat (62) is incorporated when the pipe connector (13) and the plug guide cylinder (11) are screwed together to form the valve chamber (60).
上記弁棒（６１）が前進位置に存して、この弁棒（６１）に設けられた通し穴（６１ａ）が弁座（６２）の一次側方向に弁室（６０）に臨むように出て、弁室（６０）の一次側から通し穴（６１ａ）の外から内に通じる流路が形成されて弁室（６０）の流路が開かれ、上記弁棒（６１）が後退位置に存して、第４“０”リング（６７）が弁座（６２）の一次側端面に接合して、弁室（６０）の一次側から通し穴（６１ａ）に通じる流路を封じて弁室（６０）の流路が閉じられ、上記弁室の（６０）の二次側に片係して組み込まれた第５スプリング（６９）が、弁棒（６１）を常に後退位置に付勢していて弁室（６０）の流路が閉じられる。 The valve stem (61) is in the forward position, and the through hole (61a) provided in the valve stem (61) is projected in the primary direction of the valve seat (62) so as to face the valve chamber (60). Thus, a flow path that leads from the primary side of the valve chamber (60) to the inside of the through hole (61a) is formed, the flow path of the valve chamber (60) is opened, and the valve rod (61) is in the retracted position. The fourth “0” ring (67) is joined to the primary side end face of the valve seat (62) to seal the flow path from the primary side of the valve chamber (60) to the through hole (61a). The flow path of the chamber (60) is closed, and the fifth spring (69) incorporated so as to engage with the secondary side of the valve chamber (60) always biases the valve stem (61) to the retracted position. Then, the flow path of the valve chamber (60) is closed.
上記弁室（６０）の流路の開閉は、上記可燃性ガス用ソケット継手（１）と、図１に示す可燃性ガス用プラグ継手（２）の相互押し込みで、プラグ先端部（２１）がプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に案内されて前進し、このプラグ先端部（２１ｂ）のパッキン接合面（２１ｂ）の先端で弁棒（６１）を上記前進位置まで移動させながら、このパッキン接合面（２１ｂ）が弁座（６２）に取り付けられた環状のパッキン（６８）に嵌め込まれ、正常流のガスは可燃性ガス用プラグ継手（２）側へ流出し、その可燃性ガス用プラグ継手（２）を引き抜くことで、第５スプリング（６９）が、弁棒（６１）を上記後退位置へ移動させて弁室（６０）の流路が閉じられる。 The flow path of the valve chamber (60) is opened and closed by mutually pushing the flammable gas socket joint (1) and the flammable gas plug joint (2) shown in FIG. The plug guide cylinder (11) is guided by the plug guide portion (11d) to move forward, and the valve stem (61) is moved to the advanced position at the tip of the packing joint surface (21b) of the plug tip (21b). The packing joint surface (21b) is fitted into the annular packing (68) attached to the valve seat (62), and the normal flow gas flows out to the combustible gas plug joint (2) side. By pulling out the plug joint (2) for the combustible gas, the fifth spring (69) moves the valve rod (61) to the retracted position, and the flow path of the valve chamber (60) is closed.
上記可燃性ガス用ソケット継手（１）と図１に示した可燃性ガス用プラグ継手（２）の相互押し込みで自動的に連結され、この連結と分離に連動するガス流路の開閉について以下に総合的に説明する。 The above-mentioned combustible gas socket joint (1) and the combustible gas plug joint (2) shown in FIG. Explain comprehensively.
図４に示す可燃性ガス用ソケット継手（１）と図１に示す可燃性ガス用プラグ側手（２）とが分離されている状態において、上記可燃性ガス用ソケット継手（１）の着脱筒体（１２）は、第１スプリング（１５）に押されたスプリング受座（５）に押されて二次側の後退位置に存し、プラグ案内筒体（１１）の連結球穴（１１ａ）に埋められた連結球（１４）が、上記着脱筒体（１２）とプラグ案内筒体（１１）とで形成された環状空間（１２ｃ）に浮動状態となっている。そして弁室（６０）内においては、第５スプリング（６９）が配管接続体（１３）の内周段部に片係して弁棒（６１）を二次側に付勢していて、この弁棒（６１）に取り付けられた第４”０”リング（６７）が、弁座（６２）の一次側端面に気密状に接合して弁室（６０）の流路を閉じ、可燃性ガス用ソケット継手（１）の流路は閉じられている。 In the state where the combustible gas socket joint (1) shown in FIG. 4 and the combustible gas plug side hand (2) shown in FIG. 1 are separated, the removable cylinder of the combustible gas socket joint (1) The body (12) is pushed by the spring seat (5) pushed by the first spring (15) and is in the secondary retracted position, and the connecting ball hole (11a) of the plug guide cylinder (11). The connecting sphere (14) buried in is floating in an annular space (12c) formed by the detachable cylinder (12) and the plug guide cylinder (11). In the valve chamber (60), the fifth spring (69) is engaged with the inner peripheral step of the pipe connector (13) to urge the valve rod (61) to the secondary side. A fourth “0” ring (67) attached to the valve stem (61) is joined to the primary side end face of the valve seat (62) in an airtight manner to close the flow path of the valve chamber (60), thereby combustible gas. The flow path of the socket joint (1) for use is closed.
上記可燃性ガス用ソケット側継手（１）と可燃性ガス用プラグ側継手（２）の相互押し込みで、この可燃性ガス用プラグ継手（２）のプラグ先端部（２１）が、スプリング受座（５３）そしてプラグ案内筒体（１１）のプラグ案内部（１１ｄ）に案内されて挿入され、このプラグ先端部（２１）の環状の斜面（２１ｄ）が、上記浮動状態の連結球（１４）を連結球穴（１１ａ）から環状空間（１２ｃ）にその一部をはじき出して環状の隆起部（２１ｃ）が移動可能となり、このプラグ先端部（２１）のその先端部が、弁室（６０）内の弁棒（６１）に接し、
さらなる押し込みでプラグ先端部（２１）が前進すると、上記環状の隆起部（２１ｃ）の外周面が連結球（１４）を環状空間（１２ｃ）に押し出したまま前進し、その前進に従ってプラグ先端部（２１）のパッキン接合面（２１ｂ）の先端部で弁棒（６２）を押して、この弁棒（６１）の通し穴（６１ａ）を弁座（６２）の一次側に出し弁室（６０）の流路を開きながら、プラグ先端部（２１）のパッキン接合面（２１ｂ）が、弁室（６０）内の弁座（６２）に組み込まれた環状のパッキン（６８）に気密状に填め合いされて、可燃性ガス用ソケット継手（１）から可燃性ガス用プラグ継手（２）に通ずる流路が形成される。When the above-mentioned combustible gas socket side joint (1) and the combustible gas plug side joint (2) are pushed together, the plug tip (21) of the combustible gas plug joint (2) is connected to a spring seat ( 53) Then, the plug guide cylinder (11) is guided and inserted into the plug guide portion (11d), and the annular inclined surface (21d) of the plug tip end portion (21) is connected to the floating connection ball (14). A part of the connecting ball hole (11a) is ejected into the annular space (12c) so that the annular ridge (21c) can move, and the tip of the plug tip (21) is located in the valve chamber (60). In contact with the valve stem (61)
When the plug tip (21) moves forward by further pushing, the outer peripheral surface of the annular ridge (21c) moves forward while pushing the connecting ball (14) into the annular space (12c), and the plug tip ( 21) The valve stem (62) is pushed at the tip of the packing joint surface (21b) of 21), the through hole (61a) of this valve stem (61) is brought out to the primary side of the valve seat (62), and the valve chamber (60) While opening the flow path, the packing joint surface (21b) of the plug tip (21) is fitted in an airtight manner with the annular packing (68) incorporated in the valve seat (62) in the valve chamber (60). Thus, a flow path leading from the combustible gas socket joint (1) to the combustible gas plug joint (2) is formed.
一方、上記プラグ先端部（２１）のパッキン接合面（２１ｂ）が、環状のパッキン（６８）に気密状に填め合いされる際、可燃性ガス用プラグ継手（２）の大径筒部（２３）の端面によって、第１スプリング（１５）の押力に抗してスプリング受座（５３）を可燃性ガス用プラグ継手（２）の前進方向に押し、この押し込みによって圧縮させられた第２スプリング（５５ａ）が、着脱筒体（１２）を一次側方向に前進するように押し、そして上記プラグ先端部（２１）の連結溝（２１ａ）が連結球（１４）の位置に達したとき、上記着脱筒体（１２）が、環状の斜面（１２ｂ）によって連結球（１４）を連結溝（２１ａ）に埋め込みながら前進して、連結球係止面（１２ａ）が連結溝（２１ａ）に填った連結球（１４）を押さえて係り止めし、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の連結が完了する。 On the other hand, when the packing joint surface (21b) of the plug tip portion (21) is fitted into the annular packing (68) in an airtight manner, the large-diameter cylindrical portion (23 of the plug joint for combustible gas (2)) ) Against the pressing force of the first spring (15), the spring seat (53) is pushed in the forward direction of the combustible gas plug joint (2), and the second spring compressed by this pushing (55a) pushes the detachable cylinder (12) so as to advance in the primary direction, and when the connecting groove (21a) of the plug tip (21) reaches the position of the connecting ball (14), The detachable cylindrical body (12) advances while the connecting sphere (14) is embedded in the connecting groove (21a) by the annular inclined surface (12b), and the connecting sphere locking surface (12a) fills the connecting groove (21a). Hold the connected ball (14) and lock it Coupling of the combustible gas socket joint (1) and the combustible gas plug fitting (2) it is completed.
上記可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）との連結の切り離しは、着脱筒体（１２）を二次側方向へ直線的に後退させる操作で、連結球（１４）を環状空間（１２ｃ）に浮動にならしめ、第１スプリング（１５）によって二次側に付勢されているスプリング受座（５３）が、可燃性ガス用プラグ継手（２）の大径筒部（２３）の端面を押して、この可燃性ガス用プラグ継手（２）を引き抜く方向へ移動させるように働き、同時に第５スプリング（６９）が弁棒（６１）を二次側に付勢しているその弁棒（５１）の端部でプラグ先端部（２１）を二次側に押し、環状空間（１２ｃ）に連結球穴（１１ａ）から浮動となっている連結球（１４）を、環状の隆起部（２１ｃ）の二次側環状の斜面（２１ｅ）で、連結球穴（１１ａ）からその一部を外側へはじき出して連結が自動的に切り離される。その連結の切り離しに従って第５スプリング（６９）に付勢されている弁棒（６１）が後退位置へ移動させられ、この弁棒（６１）に取り付けられている第４”０”リング（６７）が、弁座（６２）の端面に気密状に接合して弁室（６０）の流路が閉じられる。 The connection between the socket joint for combustible gas (1) and the plug joint for combustible gas (2) is disconnected by an operation of receding the detachable cylinder (12) linearly in the secondary direction. 14) floats in the annular space (12c), and the spring seat (53) biased to the secondary side by the first spring (15) has a large diameter of the plug joint (2) for the combustible gas. The end face of the cylinder part (23) is pushed to move the flammable gas plug joint (2) in the pulling direction, and at the same time, the fifth spring (69) urges the valve stem (61) to the secondary side. At the end of the valve stem (51), the plug tip (21) is pushed to the secondary side, and the connecting ball (14) floating from the connecting ball hole (11a) is inserted into the annular space (12c). The connecting spherical hole is formed on the secondary annular slope (21e) of the annular ridge (21c). Coupling from 11a) by flipping the part to the outside is automatically disconnected. According to the disconnection, the valve rod (61) biased by the fifth spring (69) is moved to the retracted position, and the fourth “0” ring (67) attached to the valve rod (61). However, it joins in an airtight manner to the end face of the valve seat (62), and the flow path of the valve chamber (60) is closed.
さらに、図４に示す上記可燃性ガス用ソケット継手（１）と、図１に示す酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の弁室（６０）の流路を開くことを不能とする弁手段を有している。
上記弁手段は、上記酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の端面がプラグ案内部（１１ｄ）の端面に突き当たった状態で、上記可燃性ガス用プラグ継手（２）のプラグ先端部（２１）より相似的に小さく形成されて、そのプラグ先端部（２１）の長さより短く形成された酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）に有するパッキン接合面（２１ｂｘ）の先端面での弁棒（６１）の開弁方向への移動を阻止して、弁室（６０）の流路を開くことを不能としている。Furthermore, the valve chamber (60) of the flammable gas socket joint (1) can be obtained by mutually pushing the flammable gas socket joint (1) shown in FIG. 4 and the oxygen plug joint (2x) shown in FIG. Valve means for making it impossible to open the flow path.
The valve means includes a plug of the combustible gas plug joint (2) in a state in which an end surface of the large-diameter cylindrical portion (23x) of the oxygen plug joint (2x) abuts an end surface of the plug guide portion (11d). Packing joint surface (21bx) formed on the plug tip (21x) of the plug joint (2x) for oxygen formed so as to be smaller than the tip (21) and shorter than the length of the plug tip (21) The valve rod (61) is prevented from moving in the valve opening direction at the front end surface of the valve, making it impossible to open the flow path of the valve chamber (60).
従って、図４に示す可燃性ガス用ソケット継手（１）においても、図１に示した可燃性ガス用ソケット継手（１）と同様の作用効果が得られる。 Therefore, the same effect as the combustible gas socket joint (1) shown in FIG. 1 can be obtained in the combustible gas socket joint (1) shown in FIG.
（ａ） 可燃性ガス用の継手 （ｂ） 酸素用の継手
１ 可燃性ガス用ソケット継手
１１ プラグ案内筒体 １１ａ 連結球穴
１１ｄ プラグ案内部 １１ｅ 筒部
１２ 着脱筒体 １２ａ 連結球係止面 １２ｃ 環状空間 １２ｅ 筒部
１３ 配管接続体 １３ａ 筒部
１４ 連結球
２ 可燃性ガス用プラグ継手 ２１ プラグ先端部 ２１ａ 連結溝
２１ｂ パッキン接合面 ２１ｃ 環状の隆起部 ２１ｄ 環状の斜面 ２３ 大径筒部
５０ 弁室 ５１ 弁棒 ５１ａ 通し穴 ５２ 弁座
５３ スプリング受座 ５３ａ 内方フランジ ５３ｂ 外方フランジ
５６ 第１”ｏ”リング ５７ 第２”ｏ”リング ５８ 環状のパッキン ５９ 第３スプリング
６０ 弁室 ６１ 弁棒 ６１ａ 通し穴 ６２ 弁座 ６７ 第４”ｏ”リング
６８ 環状のパッキン ６９ 第５スプリング
１ｘ 酸素用ソケット継手
１１ｘ プラグ案内筒体 １１ｄｘ プラグ案内部
２ｘ 酸素用プラグ継手 ２１ｘ プラグ先端部
２１ｂｘ パッキン接合面 ２１ｃｘ 環状の隆起部 ２３ｘ 大径筒部(A) Joint for flammable gas (b) Joint for
Claims (2)
上記可燃性ガス用の継手（ａ）の弁手段は、可燃性ガス用ソケット継手（１）の配管接続体（１３）にプラグ案内筒体（１１）が一体に結合して形成された弁室（５０）と、この弁室（５０）内に固定されて組み込まれた円筒状の弁座（５２）と、端部が封じられた円筒状に形成されて、その封じられた端部近傍の筒壁に通し穴（５１ａ）が設けられ、この通し穴（５１ａ）と封じられた端部との間に第２“０”リング（５７）が取り付けられ、他方の開口側の端部内壁に環状のパッキン（５８）が組み込まれて、封じられた端部側が弁室（５０）の一次側方向を向いて、上記弁座（５２）に第１”ｏ”リング（５６）を介して往復動可能に組み込まれた弁棒（５１）と、パッキン接合面（２１ｂ）と環状の隆起部（２１ｃ）とが連続して有するプラグ先端部（２１）に連続して大径筒部（２３）が設けられた円筒状の可燃性ガス用プクグ継手（２）と、で構成され、
上記弁棒（５１）が前進位置に存して、この弁棒（５１）に設けられた通し穴（５１ａ）が弁座（５２）の一次側方向に弁室（５０）に臨むように出て、弁座（５２）の一次側から通し穴（５１ａ）の外から内に通じる流路が形成されて弁室（５０）の流路が開かれ、上記弁棒（５１）が後退位置に存して、第２“０”リング（５７）が弁座（５２）の一次側端面に接合して、弁室（５０）の一次側から通し穴（５１ａ）に通じる流路を封じて弁室（５０）の流路が閉じられ、
上記弁座（５２）の二次側端面に片係して組み込まれた第３スプリング（５９）が、弁棒（５１）を常に後退位置に付勢していて弁室（５０）の流路が閉じられ、
上記弁室（５０）の流路の開閉は、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の相互押し込みで、プラグ先端部（２１）がプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に案内され、パッキン接合面（２１ｂ）が上記後退位置に存する弁棒（５１）の環状のパッキン（５８）に嵌め込まれ、さらなる押し込みによるプラグ先端部（２１）の前進に従って、環状の隆起部（２１ｃ）の一次側の環状の斜面（２１ｄ）が、環状のパッキン（５８）とともに弁棒（５１）を上記前進位置まで移動させて弁室（５０）の流路を開き、正常流のガスは可燃性ガス用プラグ継手（２）側へ流出し、その可燃性ガス用プラグ継手（２）を引き抜くことで、第３スプリング（５９）が、弁棒（５１）を上記後退位置へ移動させて弁室（５０）の流路を閉じ、
上記酸素用ソケット継手（１ｘ）に可燃性ガス用プラグ継手（２）を連結不能な手段ならび上記可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の流路を開くことを阻止する弁手段は、上記可燃性ガス用プラグ継手（２）のプラグ先端部（２１）と、このプラグ先端部（２１）より相似的に小さく形成された酸素用プラグ継手の（２ｘ）のプラグ先端部（２１ｘ）と、可燃性ガス用プラグ継手（２）のプラグ先端部（２１）に有する環状の隆起部（２１ｃ）の外径より小さく、パッキン接合面（２１ｂ）より大きい内径で形成され、可燃性ガス用ソケット継手（１）のプラグ案内部（１１ｄ）に相当する酸素用ソケット継手（１ｘ）のプラグ案内筒体（１１ｘ）に有するプラグ案内部（１１ｄｘ）と、上記酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）に有するパッキン接合面（２１ｂｘ）の外径より大きく形成された内径を有する可燃性ガス用ソケット継手（１）の弁棒（５１）ならび環状のパッキン（５８）と、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の外径より小さな内径で形成された可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）と、で構成され、
上記酸素用ソケット継手（１ｘ）のプラグ案内筒体（１１ｘ）に有するプラグ案内部（１１ｄｘ）に可燃性ガス用プラグ継手（２）のプラグ先端部（２１）が差し込まれた際、パッキン接合面（２１ｂ）が挿入されるが、環状の隆起部（２１ｃ）がプラグ案内部（１ｄｘ）の内周端部に当たってそのプラグ先端部（２１）の前進を阻止して連結を不能とし、
上記可燃性ガス用ソケット継手（１）のプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）が差し込まれた際、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の端面がプラグ案内部（１１ｄ）の端面に突き当たった状態で、環状の隆起部（２１ｃｘ）で弁棒（５１）の開弁方向への移動を不能にプラグ先端部（２１ｘ）のパッキン接合面（２１ｂｘ）が、可燃性ガス用ソケット継手（１）の弁棒（５１）に組み込まれた環状のパッキン（５８）に収まり、弁室（５０）の流路を開くことを阻止するように、上記可燃性ガス用の継手（ａ）と、酸素用の継手（ｂ）と、が相対的に構成されていることを特徴とする溶断用ガス流路の継手。The combustible gas joint (a) composed of the combustible gas socket joint (1) and the combustible gas plug joint (2) is the same as the constituent parts of the combustible gas joint (a). And a joint for oxygen (b) composed of an oxygen socket joint (1x) and an oxygen plug joint (2x), and these combustible gases. Means for connecting each of the joint (a) for oxygen and the joint (b) for oxygen so as to be separable by mutually pushing the socket joint and the plug joint, and valve means for opening and closing the flow path of the socket joint according to this connection and separation And a valve means for preventing the combustible gas socket joint (1) from opening the flow path by mutually pushing the combustible gas socket joint (1) and the oxygen plug joint (2x). And flammable to the above oxygen socket joint (1x) And a non coupling means of the gas plug fitting (2), further comprising,
The valve means of the combustible gas joint (a) is a valve chamber formed by integrally connecting the plug guide cylinder (11) to the pipe connection body (13) of the combustible gas socket joint (1). (50), a cylindrical valve seat (52) fixed and incorporated in the valve chamber (50), and a cylindrical shape in which the end is sealed, and in the vicinity of the sealed end A through hole (51a) is provided in the cylindrical wall, and a second “0” ring (57) is attached between the through hole (51a) and the sealed end portion, and the other opening side end wall is provided on the inner wall of the end portion. An annular packing (58) is incorporated, and the sealed end portion faces the primary side of the valve chamber (50), and reciprocates through the first “o” ring (56) to the valve seat (52). The valve stem (51) incorporated so as to be movable, the packing joint surface (21b), and the annular raised portion (21c) are continuously provided. That the plug tip portion and the large-diameter cylindrical portion in succession (21) (23) a cylindrical combustible gas Pukugu joint provided (2), in the configuration,
The valve stem (51) is in the forward position, and the through hole (51a) provided in the valve stem (51) protrudes toward the valve chamber (50) in the primary direction of the valve seat (52). Thus, a flow path leading from the primary side of the valve seat (52) to the inside of the through hole (51a) is formed, the flow path of the valve chamber (50) is opened, and the valve rod (51) is in the retracted position. The second “0” ring (57) is joined to the primary side end face of the valve seat (52) to seal the flow path from the primary side of the valve chamber (50) to the through hole (51a). The flow path of the chamber (50) is closed,
The third spring (59) incorporated in a single engagement with the secondary side end face of the valve seat (52) always urges the valve rod (51) to the retracted position, and the flow path of the valve chamber (50). Is closed
The flow path of the valve chamber (50) is opened and closed by mutually pushing the combustible gas socket joint (1) and the combustible gas plug joint (2) so that the plug tip (21) is plug guide cylinder (11). ) And the packing joint surface (21b) is fitted into the annular packing (58) of the valve stem (51) in the retracted position, and the plug tip (21) is further pushed. In accordance with the forward movement, the annular inclined surface (21d) on the primary side of the annular ridge (21c) moves the valve rod (51) to the advanced position together with the annular packing (58) to flow the valve chamber (50). The channel is opened, and the normal flow gas flows out to the combustible gas plug joint (2) side. By pulling out the combustible gas plug joint (2), the third spring (59) is connected to the valve stem (51). ) Is moved to the reverse position Close the flow path of the valve chamber (50) Te,
The flammable gas plug joint (2) cannot be connected to the oxygen socket joint (1x), and the flammable gas socket joint (1) and the oxygen plug joint (2x) are pushed together. The valve means for preventing the gas socket joint (1) from opening the flow path is similar to the plug tip portion (21) of the combustible gas plug joint (2) and the plug tip portion (21). From the outer diameter of (2x) plug tip (21x) of the small oxygen plug joint and the annular ridge (21c) of the plug tip (21) of the combustible gas plug joint (2) The plug guide cylinder (11x) of the oxygen socket joint (1x) is smaller and formed with an inner diameter larger than the packing joint surface (21b) and corresponds to the plug guide portion (11d) of the socket joint for combustible gas (1). Have A flammable gas socket joint (1) having an inner diameter formed larger than the outer diameter of the packing joint surface (21bx) of the lug guide portion (11dx) and the plug tip (21x) of the oxygen plug joint (2x) ) Valve stem (51) and annular packing (58) and socket joint for combustible gas (1) formed with an inner diameter smaller than the outer diameter of the large-diameter cylindrical portion (23x) of the plug joint for oxygen (2x) A plug guide portion (11d) included in the plug guide cylinder (11).
When the plug tip (21) of the flammable gas plug joint (2) is inserted into the plug guide portion (11dx) of the plug guide cylinder (11x) of the oxygen socket joint (1x), the packing joint surface (21b) is inserted, but the annular ridge (21c) hits the inner peripheral end of the plug guide (1dx) to prevent the plug tip (21) from moving forward, disabling the connection,
When the plug tip (21x) of the oxygen plug joint (2x) is inserted into the plug guide (11d) of the plug guide cylinder (11) of the flammable gas socket joint (1), the oxygen plug With the end surface of the large-diameter cylindrical portion (23x) of the joint (2x) abutting against the end surface of the plug guide portion (11d), the annular bulge portion (21cx) moves the valve stem (51) in the valve opening direction. The packing joint surface (21bx) of the plug tip (21x) cannot be accommodated in the annular packing (58) incorporated in the valve stem (51) of the combustible gas socket joint (1), and the valve chamber (50). The fusing gas flow is characterized in that the combustible gas joint (a) and the oxygen joint (b) are relatively constructed so as to prevent the opening of the flow path. Road fittings.
上記弁棒（６１）が前進位置に存して、この弁棒（６１）に設けられた通し穴（６１ａ）が弁座（６２）の一次側方向に弁室（６０）に臨むように出て、弁室（６０）の一次側から通し穴（６１ａ）の外から内に通じる流路が形成されて弁室（６０）の流路が開かれ、上記弁棒（６１）が後退位置に存して、第４“０”リング（６７）が弁座（６２）の一次側端面に接合して、弁室（６０）の一次側から通し穴（６１ａ）に通じる流路を封じて弁室（６０）の流路が閉じられ、
上記弁室（６０）の二次側に組み込まれた第５スプリング（６９）が、弁棒（６１）を常に後退位置に付勢していて弁室（６０）の流路が閉じられ、
上記弁室（６０）の流路の開閉は、可燃性ガス用ソケット継手（１）と可燃性ガス用プラグ継手（２）の相互押し込みで、プラグ先端部（２１）がプラグ案内筒体（１１）に有するプラグ案内部（１１ｄ）に案内された前進に従って、弁棒（６１）の端部をプラグ先端部（２１）のパッキン接合面（２１ｂ）の先端で押しながら弁座（６２）に取り付けられた環状のパッキン（６８）に嵌め込まれ、弁棒を上記前進位置まで移動させて、正常流のガスは可燃性ガス用プラグ継手（２）側へ流出し、その可燃性ガス用プラグ継手（２）を引き抜くことで、第５スプリング（６９）が、弁棒（６１）を上記後退位置へ移動させて弁室（６０）の流路を閉じ、
上記可燃性ガス用ソケット継手（１）と酸素用プラグ継手（２ｘ）の相互押し込みで、この可燃性ガス用ソケット継手（１）の流路を開くことを阻止する弁手段が、酸素用プラグ継手（２ｘ）の大径筒部（２３ｘ）の端面がプラグ案内部（１１ｄ）の端面に突き当たった状態で、可燃性ガス用プラグ継手（２）のプラグ先端部（２１）より相似的に小さく形成された酸素用プラグ継手（２ｘ）のプラグ先端部（２１ｘ）に有するパッキン接合面（２１ｂｘ）の先端で、弁棒（６１）を開弁方向への移動を不能として、上記弁室（６０）の流路を開くことを阻止する請求項１に記載の溶断用ガス流路の継手。The valve means of the combustible gas joint (a) includes a combustible gas socket joint (1), a valve formed by integrally connecting the plug connecting body (11) to the pipe connector (13). The chamber (60), the cylindrical valve seat (62) to which the annular packing (68) was attached and fixed and incorporated on the secondary side in the valve chamber (60), and the end portion were sealed A cylindrical hole is formed in the cylindrical wall near the sealed end, and a fourth “0” ring (61a) is provided between the through hole (61a) and the sealed end. 67) is attached, and the sealed end part side faces the primary direction of the valve chamber (60), and is mounted in the valve seat (62) through an annular packing (68) so as to be reciprocally movable ( 61), and
The valve stem (61) is in the forward position, and the through hole (61a) provided in the valve stem (61) is projected in the primary direction of the valve seat (62) so as to face the valve chamber (60). Thus, a flow path that leads from the primary side of the valve chamber (60) to the inside of the through hole (61a) is formed, the flow path of the valve chamber (60) is opened, and the valve rod (61) is in the retracted position. The fourth “0” ring (67) is joined to the primary side end face of the valve seat (62) to seal the flow path from the primary side of the valve chamber (60) to the through hole (61a). The flow path of the chamber (60) is closed,
The fifth spring (69) incorporated on the secondary side of the valve chamber (60) constantly urges the valve rod (61) to the retracted position, and the flow path of the valve chamber (60) is closed,
The flow path of the valve chamber (60) is opened and closed by mutually pushing the combustible gas socket joint (1) and the combustible gas plug joint (2) so that the plug tip (21) is plug guide cylinder (11). The valve stem (61) is attached to the valve seat (62) while pushing the end of the valve stem (61) with the tip of the packing joint surface (21b) of the plug tip (21) according to the advance guided by the plug guide (11d) of Is inserted into the annular packing (68), the valve rod is moved to the forward position, and the normal flow gas flows out to the combustible gas plug joint (2) side, and the combustible gas plug joint ( 2) By pulling out, the fifth spring (69) moves the valve stem (61) to the retracted position to close the flow path of the valve chamber (60),
The valve means for preventing the opening of the flow path of the flammable gas socket joint (1) by mutually pushing the flammable gas socket joint (1) and the oxygen plug joint (2x) is an oxygen plug joint. In the state where the end surface of the large diameter cylindrical portion (23x) of (2x) abuts against the end surface of the plug guide portion (11d), it is formed to be smaller than the plug tip portion (21) of the plug joint (2) for combustible gas. The valve rod (61) cannot be moved in the valve opening direction at the tip of the packing joint surface (21bx) of the plug tip (21x) of the oxygen plug joint (2x), and the valve chamber (60) The fusing gas flow path joint according to claim 1, which prevents the flow path from being opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009048560A JP4573139B6 (en) | 2009-02-06 | Fusing gas flow path joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| JP2009048560A JP4573139B6 (en) | 2009-02-06 | Fusing gas flow path joint |
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| Publication Number | Publication Date |
|---|---|
| JP2010181022A true JP2010181022A (en) | 2010-08-19 |
| JP4573139B2 JP4573139B2 (en) | 2010-11-04 |
| JP4573139B6 JP4573139B6 (en) | 2011-04-06 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10103578A (en) * | 1996-09-30 | 1998-04-21 | Sanki:Kk | Gas passage connector for gas welding and gas fusing |
| JP2006153163A (en) * | 2004-11-30 | 2006-06-15 | Bridgestone Flowtech Corp | Pipe joint |
| JP2006200653A (en) * | 2005-01-21 | 2006-08-03 | Bridgestone Flowtech Corp | Pipe joint |
| JP2007010007A (en) * | 2005-06-29 | 2007-01-18 | Max Co Ltd | Compressed air takeout device |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10103578A (en) * | 1996-09-30 | 1998-04-21 | Sanki:Kk | Gas passage connector for gas welding and gas fusing |
| JP2006153163A (en) * | 2004-11-30 | 2006-06-15 | Bridgestone Flowtech Corp | Pipe joint |
| JP2006200653A (en) * | 2005-01-21 | 2006-08-03 | Bridgestone Flowtech Corp | Pipe joint |
| JP2007010007A (en) * | 2005-06-29 | 2007-01-18 | Max Co Ltd | Compressed air takeout device |
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| JP4573139B2 (en) | 2010-11-04 |
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