JP5980109B2 - Misconnection prevention device and method of using the same - Google Patents

Misconnection prevention device and method of using the same Download PDF

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JP5980109B2
JP5980109B2 JP2012272808A JP2012272808A JP5980109B2 JP 5980109 B2 JP5980109 B2 JP 5980109B2 JP 2012272808 A JP2012272808 A JP 2012272808A JP 2012272808 A JP2012272808 A JP 2012272808A JP 5980109 B2 JP5980109 B2 JP 5980109B2
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plug
end side
tubular member
connection
joint member
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JP2014118991A (en
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萩原　伸一
伸一 萩原
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Osaka Gas Co Ltd
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Description

本発明は、プラグの接続部に、ホースの一端に設けられる継手部材を接続する接続構造に使用する誤接続防止装置及びその使用方法に関する。   The present invention relates to an erroneous connection preventing device used for a connection structure in which a joint member provided at one end of a hose is connected to a connection portion of a plug, and a method of using the same.

従来、ガス機器等に設けられるプラグは、当該プラグに継手部材が接続された正常接続状態で使用可能となるものであり、継手部材と一体に備えられているホースを介してガス機器等へ都市ガス等の燃料ガスが供給可能に構成されている。
以下、まず、当該技術の前提となる継手部材の構成、プラグの構成、プラグへの継手部材の接続動作、プラグから継手部材の分離動作を、図面に基づいて説明する。 Conventionally, a plug provided in a gas device or the like can be used in a normal connection state in which a joint member is connected to the plug, and is connected to a gas device or the like via a hose provided integrally with the joint member. Fuel gas such as gas can be supplied.
Hereinafter, the structure of the joint member, the structure of the plug, the connection operation of the joint member to the plug, and the separation operation of the joint member from the plug will be described based on the drawings.

図１４（ａ）は、プラグ４０と継手部材２０との非接続状態を示しており、図１４（ｂ）は、プラグ４０と継手部材２０との接続状態を示している。
尚、図１４（ｂ）では、ホース１０、継手部材２０、プラグ４０に渡って流体流路２２が形成され、ホース１０側からガス機器（図示せず）の側への燃料ガスの供給が可能な状態となっている。この状態では、継手部材２０は、その先端からの流体の流出が許容される開放状態となっている。 FIG. 14A shows a non-connected state between the plug 40 and the joint member 20, and FIG. 14B shows a connected state between the plug 40 and the joint member 20.
14B, a fluid flow path 22 is formed across the hose 10, the joint member 20, and the plug 40, and fuel gas can be supplied from the hose 10 side to the gas equipment (not shown) side. It is in a state. In this state, the joint member 20 is in an open state in which the outflow of fluid from the tip is allowed.

（継手部材の構成）
図１４（ａ）に示すように、継手部材２０は、ホース１０が接続されるコネクタ１１と、コネクタ１１に連結される筒状本体２１と、筒状本体２１の内側で軸方向（図１４（ａ）で矢印Ｘに沿う方向）に移動自在な作動部材３３と、筒状本体２１の外周部位で軸方向に移動自在なスリーブ部材３４と、筒状本体２１の継手部材先端側（図１４（ａ）で矢印Ｘの先端側）に位置されスリーブ部材３４の内径面により径方向の位置が規制されるロック用ボール３５と、当該ロック用ボール３５を継手部材先端側から位置決めする先端部材２４と、筒状本体２１の継手部材基端側（図１４（ａ）で矢印Ｘの基端側）の外周部位で筒状本体２１に固定されているカバー部材２３とを備えて構成されている。 (Composition of joint member)
As shown in FIG. 14A, the joint member 20 includes a connector 11 to which the hose 10 is connected, a cylindrical main body 21 connected to the connector 11, and an axial direction inside the cylindrical main body 21 (FIG. 14 ( In FIG. 14 (a), the actuating member 33 is movable in the direction along the arrow X), the sleeve member 34 is movable in the axial direction at the outer peripheral portion of the cylindrical main body 21, and the joint member distal end side of the cylindrical main body 21. a locking ball 35 positioned on the tip end side of the arrow X in a) and whose radial position is regulated by the inner diameter surface of the sleeve member 34; and a tip member 24 for positioning the locking ball 35 from the joint member tip side; And a cover member 23 fixed to the cylindrical main body 21 at the outer peripheral portion of the cylindrical main body 21 on the joint member base end side (the base end side of the arrow X in FIG. 14A).

コネクタ１１と作動部材３３との間には、コネクタ１１に対して作動部材３３を継手部材先端側（図１４（ａ）で矢印Ｘの先端側）に付勢する第１コイルバネ３１が設けられ、カバー部材２３とスリーブ部材３４との間には、カバー部材２３に対してスリーブ部材３４を継手部材先端側に付勢する第２コイルバネ３２が設けられている。   A first coil spring 31 is provided between the connector 11 and the actuating member 33 to urge the actuating member 33 toward the distal end side of the joint member with respect to the connector 11 (the tip end side of the arrow X in FIG. 14A). A second coil spring 32 is provided between the cover member 23 and the sleeve member 34 to urge the sleeve member 34 toward the distal end side of the joint member with respect to the cover member 23.

スリーブ部材３４は、継手部材２０が閉止状態（図１４（ａ）に示す状態）にある場合、その継手部材先端側（図１４（ａ）で矢印Ｘの先端側）の端面が、先端部材２４の端面と同じ位置となる引退位置に位置し、継手部材２０が開放状態（図１４（ｂ）に示す状態）にある場合、その継手部材先端側の端面が、先端部材２４に対して、継手部材先端側に突出する突出位置に位置する。   When the joint member 20 is in the closed state (the state shown in FIG. 14A), the sleeve member 34 has an end surface on the distal end side of the joint member (the distal end side of the arrow X in FIG. 14A). When the joint member 20 is in the open position (the state shown in FIG. 14B), the end surface on the distal end side of the joint member is in the joint position with respect to the distal end member 24. It is located at a protruding position that protrudes toward the end of the member.

スリーブ部材３４の継手部材先端側（図１４（ａ）で矢印Ｘの先端側）の部位には、ロック用ボール３５を外径側部位に規制する第１規制面２５が設けられ、当該第１規制面２５より継手部材基端側（図１４（ａ）で矢印Ｘの基端側）には、ロック用ボール３５を内径側部位に規制する第２規制面２６が設けられている。
ロック用ボール３５は、スリーブ部材３４が引退位置（図１４（ａ）に示す状態）に位置する場合、ロック用ボール３５とスリーブ部材３４との位置関係から、第１規制面２５により径方向位置を規制される。このとき、作動部材３３は、継手部材先端側に位置して流体流路２２が閉止され、流体流路２２における燃料ガスの流通が禁止される。即ち、継手部材２０は、閉止状態となる。
一方、ロック用ボール３５は、スリーブ部材３４が突出位置（図１４（ｂ）に示す状態）に位置する場合、ロック用ボール３５とスリーブ部材３４との位置関係から、第２規制面２６により径方向位置を規制される。このとき、作動部材３３は、継手部材基端側に位置して流体流路２２が開放され、流体流路２２における燃料ガスの流通が許容される。即ち、継手部材２０は、開放状態となる。
以上の如く構成することにより、継手部材２０は、その閉止状態と開放状態の間で、その内部を流れる燃料ガスの流れ状態を切替自在に構成されている。 A first regulating surface 25 that regulates the locking ball 35 to the outer diameter side portion is provided at a portion of the sleeve member 34 on the distal end side of the joint member (the distal end side of the arrow X in FIG. 14A). A second restriction surface 26 for restricting the locking ball 35 to the inner diameter side portion is provided on the joint member proximal end side (the proximal end side of the arrow X in FIG. 14A) from the restriction surface 25.
When the sleeve member 34 is positioned in the retracted position (the state shown in FIG. 14A), the locking ball 35 is positioned in the radial direction by the first restricting surface 25 due to the positional relationship between the locking ball 35 and the sleeve member 34. Be regulated. At this time, the operating member 33 is located on the joint member distal end side, the fluid flow path 22 is closed, and the fuel gas flow in the fluid flow path 22 is prohibited. That is, the joint member 20 is in a closed state.
On the other hand, when the sleeve member 34 is located at the protruding position (the state shown in FIG. 14B), the locking ball 35 has a diameter due to the second restriction surface 26 due to the positional relationship between the locking ball 35 and the sleeve member 34. Directional position is restricted. At this time, the operating member 33 is located on the joint member base end side, the fluid flow path 22 is opened, and the fuel gas flow in the fluid flow path 22 is allowed. That is, the joint member 20 is in an open state.
By configuring as described above, the joint member 20 is configured to be able to switch the flow state of the fuel gas flowing through the inside between the closed state and the open state.

〔プラグの構成〕
プラグ４０は、図１４（ａ）に示すように、継手部材２０が接続される接続部４８を備えて構成されており、当該接続部４８の外周部位には、プラグ先端側からプラグ基端側への方向（図１４（ａ）で矢印Ｘの方向）へ向けて、第１環状部４１、ロック用ボール３５を受け入れるロック溝部４２、及び第２環状部４３を順に備えている。接続部４８の内部には、軸方向（図１４（ａ）で矢印Ｘに沿う方向）に沿って、プラグ先端側からプラグ基端側に亘って、内部流体流路４６が設けられている。
図１４（ａ）に示す例では、第１環状部４１と第２環状部４３と略同径に構成されており、ロック溝部４２は、断面視において、プラグ４０の径方向で径外から径内へ向けて徐々に幅狭となる略三角形状の溝として構成されている。
尚、当該プラグ４０には、第２環状部４３よりプラグ基端側において、第２環状部４３より大径の大径部４４が設けられている。
プラグ４０の接続部４８のプラグ基端側には、当該プラグ４０の径方向外側へ突出する突出部４９が設けられている。 [Plug configuration]
As shown in FIG. 14A, the plug 40 is configured to include a connection portion 48 to which the joint member 20 is connected, and the outer peripheral portion of the connection portion 48 is connected to the plug proximal end side from the plug distal end side. A first annular portion 41, a lock groove portion 42 that receives the locking ball 35, and a second annular portion 43 are sequentially provided in the direction toward (in the direction of arrow X in FIG. 14A). Inside the connecting portion 48, an internal fluid flow path 46 is provided from the plug distal end side to the plug proximal end side along the axial direction (the direction along the arrow X in FIG. 14A).
In the example shown in FIG. 14A, the first annular portion 41 and the second annular portion 43 are configured to have substantially the same diameter, and the lock groove portion 42 has a diameter from the outside in the radial direction of the plug 40 in a sectional view. It is configured as a substantially triangular groove that gradually becomes narrower inward.
The plug 40 is provided with a large-diameter portion 44 having a larger diameter than the second annular portion 43 on the plug base end side from the second annular portion 43.
On the plug base end side of the connecting portion 48 of the plug 40, a protruding portion 49 protruding outward in the radial direction of the plug 40 is provided.

〔プラグへの継手部材の接続動作〕
プラグ４０への継手部材２０の接続動作に際しては、作業者は、継手部材２０のカバー部材２３を保持し、プラグ４０を継手部材２０の内部へ挿入させる。挿入前の状態では、継手部材２０は、閉止状態（図１４（ａ）に示す状態）にある。挿入操作において、プラグ４０のプラグ先端側（図１４（ａ）で矢印Ｘの基端側）の端面４７は、作動部材３３の継手部材先端側（図１４（ａ）で矢印Ｘの先端側）の先端に当接し、作動部材３３を継手部材基端側（図１４（ａ）で矢印Ｘの基端側）へ押し込む。これにより、ホース１０、継手部材２０、及びプラグ４０に亘って、流体流路２２が形成される。
当該プラグ４０の継手部材２０への挿入に伴って、ロック用ボール３５がロック溝部４２に嵌り込むと共に、ロック用ボール３５によるスリーブ部材３４の継手部材基端側（図１４（ａ）で矢印Ｘの基端側）への位置保持が解除され、継手部材先端側に付勢されているスリーブ部材３４が継手部材先端側へ突出する。
これにより、継手部材２０は、図１４（ａ）に示す閉止状態から図１４（ｂ）に示す開放状態へ切り替えられることとなる。 [Connection operation of joint member to plug]
When connecting the joint member 20 to the plug 40, the operator holds the cover member 23 of the joint member 20 and inserts the plug 40 into the joint member 20. In the state before insertion, the joint member 20 is in a closed state (the state shown in FIG. 14A). In the insertion operation, the end surface 47 of the plug 40 on the plug distal end side (the base end side of the arrow X in FIG. 14A) is the joint member distal end side of the operating member 33 (the distal end side of the arrow X in FIG. 14A). The operation member 33 is pushed into the joint member base end side (the base end side of the arrow X in FIG. 14A). As a result, the fluid flow path 22 is formed across the hose 10, the joint member 20, and the plug 40.
As the plug 40 is inserted into the joint member 20, the locking ball 35 is fitted into the lock groove portion 42, and the joint member proximal end side of the sleeve member 34 by the locking ball 35 (arrow X in FIG. 14A). The position holding to the proximal end side of the joint member is released, and the sleeve member 34 biased toward the distal end side of the joint member protrudes toward the distal end side of the joint member.
As a result, the joint member 20 is switched from the closed state shown in FIG. 14A to the open state shown in FIG. 14B.

〔プラグから継手部材の分離動作〕
プラグ４０から継手部材２０の分離動作に際しては、作業者は、継手部材２０のスリーブ部材３４を持って、このスリーブ部材３４を継手部材基端側（図１４（ａ）で矢印Ｘの基端側）に移動させる。移動前の状態において、継手部材２０は、図１４（ｂ）に示す開放状態にある。移動操作において、作業者が、スリーブ部材３４を、第２コイルバネ３２の付勢力に抗して継手部材基端側に移動されることで、スリーブ部材３４の第１規制面２５が軸方向（図１４（ａ）で矢印Ｘに沿う方向）のロック用ボール３５に相対する位置に移動し、ロック用ボール３５がロック溝部４２から脱離される。
これにより、スリーブ部材３４が、ロック用ボール３５により継手部材基端側に位置保持されて、継手部材２０は、図１４（ｂ）に示す開放状態から図１４（ａ）に示す閉止状態へ切り替えられることとなる。 [Separation operation of the joint member from the plug]
When separating the joint member 20 from the plug 40, the operator holds the sleeve member 34 of the joint member 20, and connects the sleeve member 34 to the base end side of the joint member (the base end side of the arrow X in FIG. 14A). ). In the state before the movement, the joint member 20 is in an open state shown in FIG. In the moving operation, the operator moves the sleeve member 34 toward the joint member proximal end side against the urging force of the second coil spring 32, so that the first regulating surface 25 of the sleeve member 34 is axially moved (see FIG. 14 (a) (in the direction along the arrow X), it moves to a position facing the locking ball 35, and the locking ball 35 is detached from the locking groove 42.
As a result, the sleeve member 34 is held at the joint member proximal end side by the locking ball 35, and the joint member 20 is switched from the open state shown in FIG. 14B to the closed state shown in FIG. 14A. Will be.

これまで説明したように、従来のガス機器（図示せず）等に設けられるプラグ４０には、継手部材２０を介してホース１０が接続されることで、プラグ４０に対して継手部材２０が確実に接続され、ガス漏洩等を防止できる正常接続状態を実現できるようになっている。   As explained so far, the joint member 20 is securely connected to the plug 40 by connecting the hose 10 to the plug 40 provided in a conventional gas appliance (not shown) or the like via the joint member 20. The normal connection state which can prevent gas leakage etc. can be implement | achieved.

ここで、特許文献１に開示の技術では、プラグ４０の接続部４８に対し、ゴムホース８０（このホースは先端に継手部材を備えず、一般にゴムホースと呼ばれるため、以下、継手部材を備えないホースを単に「ゴムホース」と呼ぶ）が直接接続される誤接続状態を防止すべく、プラグ４０の周囲を外囲する外囲部材を設けている。当該外囲部材は、ゴムホース８０がプラグ４０に直接接続される際、ゴムホース８０の周囲をクリップにより挟持することを防止するように設けられている。
尚、上記ゴムホース８０は、継手部材２０と一体に設けられているホース１０とは、別のものを意味するものである。 Here, in the technique disclosed in Patent Document 1, a rubber hose 80 (this hose does not include a joint member at the tip and is generally referred to as a rubber hose. In order to prevent an erroneous connection state in which a “rubber hose” is simply connected), an enclosure member that surrounds the periphery of the plug 40 is provided. The surrounding member is provided so as to prevent the periphery of the rubber hose 80 from being clamped by a clip when the rubber hose 80 is directly connected to the plug 40.
The rubber hose 80 is different from the hose 10 provided integrally with the joint member 20.

特開平１１−０６３３４４号公報JP-A-11-063344

特許文献１に開示の技術では、プラグ４０に対し直接ゴムホース８０が接続される誤接続状態において、当該ゴムホース８０をクリップにより挟持することは防止できる。しかしながら、プラグ４０に対し直接ゴムホース８０が接続される誤接続状態において、クリップによりゴムホース８０が挟持されていない状態で、使用される虞があり、改善の余地があった。   With the technique disclosed in Patent Document 1, it is possible to prevent the rubber hose 80 from being clamped by a clip in an erroneous connection state in which the rubber hose 80 is directly connected to the plug 40. However, in the erroneous connection state in which the rubber hose 80 is directly connected to the plug 40, the rubber hose 80 may be used in a state where the rubber hose 80 is not sandwiched between the clips, and there is room for improvement.

本発明は、ガス機器（図示せず）に設けられるプラグ４０に継手部材２０を介してホース１０が接続される正常接続状態と、プラグ４０に直接ゴムホース８０が接続される誤接続状態とが発生する点に鑑みてなされたものであり、その目的は、プラグ４０に本願にいう誤接続防止装置を装着しておくことにより、誤接続状態の発生を積極的に防止できながらも、正常接続状態を円滑に実現できる誤接続防止装置及びその使用方法を提供する点にある。   In the present invention, a normal connection state in which the hose 10 is connected to the plug 40 provided in the gas device (not shown) via the joint member 20 and an erroneous connection state in which the rubber hose 80 is directly connected to the plug 40 are generated. In view of the above, the purpose thereof is to attach the plug 40 to the erroneous connection prevention device as described in the present application, thereby actively preventing the occurrence of an erroneous connection state, but in a normal connection state. It is in the point which provides the misconnection prevention apparatus which can implement | achieve smoothly, and its usage method.

上記目的を達成するための本願の誤接続防止装置は、
プラグの接続部に、ホースの一端に設けられる継手部材を接続する接続構造に使用する誤接続防止装置であって、その特徴構成は、
前記プラグの接続部に装着可能であると共に、一対の連結部材を連結して構成される筒状部材が設けられ、
一対の前記連結部材のうち、一の前記連結部材には係合部が設けられると共に、他の前記連結部材には前記係合部に係合する被係合部が設けられ、
前記被係合部を備えた前記連結部材は、連結部材本体と、当該連結部材本体と一部で一体化され、他部が当該連結部材本体に対して揺動自在に構成される係合解除用弾性変形部とを有して構成され、
前記筒状部材の前記プラグの接続部への装着状態において、前記係合解除用弾性変形部に、前記筒状部材の内径側へ突出するとともに、前記継手部材の挿入に伴う前記継手部材の当接により外径側へ揺動して、前記係合部と前記被係合部との係合を解除する係合解除部が設けられ、
前記装着状態において、前記筒状部材の内周面のうち、少なくとも前記係合解除部に対向する部位に、筒状部材先端側から筒状部材基端側へ向かうに従って内径側への突出量が増加する対向傾斜部が設けられ、
プラグ軸方向で筒状部材先端側から筒状部材基端側への前記継手部材の挿入に伴って、前記対向傾斜部にて前記継手部材が前記係合解除部の側へ移動し、前記係合解除部に前記継手部材が当接して前記係合解除用弾性変形部が弾性変形し、前記係合部と前記被係合部との係合が解除される点にある。 In order to achieve the above object, the erroneous connection preventing device of the present application is
An erroneous connection prevention device used in a connection structure for connecting a joint member provided at one end of a hose to a connection portion of a plug, the characteristic configuration of which is
A cylindrical member that is attachable to the connecting portion of the plug and is configured by connecting a pair of connecting members is provided,
Of the pair of connecting members, one of the connecting members is provided with an engaging portion, and the other connecting member is provided with an engaged portion that engages with the engaging portion.
The connection member provided with the engaged portion is integrated with a connection member main body and a part of the connection member main body, and the other part is configured to be swingable with respect to the connection member main body. An elastic deformation part for
In a state where the tubular member is attached to the connection portion of the plug, the elastic member for releasing engagement projects toward the inner diameter side of the tubular member, and the joint member comes into contact with insertion of the joint member. An engagement release portion is provided that swings to the outer diameter side by contact and releases the engagement between the engagement portion and the engaged portion,
In the mounted state, at least a portion of the inner peripheral surface of the cylindrical member facing the engagement release portion has a protruding amount toward the inner diameter side from the distal end side of the cylindrical member toward the proximal end side of the cylindrical member. Increasing opposing slopes are provided,
As the joint member is inserted from the tubular member distal end side to the tubular member proximal end side in the plug axial direction, the joint member moves to the engagement release portion side at the opposing inclined portion, and the engagement The joint member is brought into contact with the mating release portion, and the engagement releasing elastic deformation portion is elastically deformed, and the engagement between the engagement portion and the engaged portion is released.

上記特徴構成によれば、筒状部材の内周面のうち、係合解除部に対向する部位に、筒状部材先端側から筒状部材基端側へ向かうに従って内径側への突出量が増加する対向傾斜部が設けられているから、プラグ軸方向で筒状部材先端側から筒状部材基端側へ継手部材が挿入されるに伴って、継手部材が対向傾斜部に沿って摺動移動することにより係合解除部へ当接し、係合解除用弾性変形部が弾性変形（揺動変形）し、係合部と被係合部との係合を解除できる。
即ち、当該対向傾斜部を備えることにより、異なる外径の継手部材が挿入される場合にも、当該継手部材の挿入に伴って、当該継手部材を係合解除部に当接させることができるから、様々な外径の継手部材に対応可能な誤接続防止装置を実現できる。
さらに、この構成では、後に、図７〜９、図１０〜１２を使用して説明するように、継手部材の挿入に従って、対向傾斜部が継手部材を係合解除部側へ押されるため、継手部材が比較的大径の部材である場合、比較的小径の部材である場合、ともに、係合解除部近傍において、継手部材に当接することなく近接を許容する形状（例えば、係合解除部以外の内周形状を、継手部材の外径より大きな径の円弧状に形成する）とすることにより、違和感なく挿入操作（係合解除操作）を行うことができる。 According to the above characteristic configuration, the amount of protrusion toward the inner diameter side increases from the tubular member distal end side toward the tubular member proximal end side in the portion facing the disengagement portion on the inner peripheral surface of the tubular member. As the joint member is inserted from the tubular member distal end side to the tubular member proximal end side in the plug axial direction, the joint member slides along the opposed slope portion. By doing so, it is brought into contact with the disengagement portion, the disengagement elastic deformation portion is elastically deformed (oscillating deformation), and the engagement between the engagement portion and the engaged portion can be released.
That is, by providing the opposing inclined portion, even when a joint member having a different outer diameter is inserted, the joint member can be brought into contact with the engagement release portion as the joint member is inserted. Thus, it is possible to realize an erroneous connection preventing device that can handle joint members having various outer diameters.
Furthermore, in this configuration, as will be described later with reference to FIGS. 7 to 9 and FIGS. 10 to 12, the opposing inclined portion is pushed toward the disengagement portion side as the joint member is inserted. When the member is a relatively large-diameter member or a relatively small-diameter member, in the vicinity of the disengagement portion, a shape that allows proximity without contacting the joint member (for example, other than the disengagement portion) The inner circumferential shape is formed into an arc shape having a diameter larger than the outer diameter of the joint member), so that the insertion operation (disengagement operation) can be performed without a sense of incongruity.

本発明の誤接続防止装置の更なる特徴構成は、
前記係合解除部は、筒状部材先端側から筒状部材基端側に向かうに従って内径側突出量が増加する傾斜面を備える点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
The disengagement part is provided with an inclined surface in which the inner-diameter side protrusion amount increases from the distal end side of the tubular member toward the proximal end side of the tubular member.

上記特徴構成によれば、係合解除部が、筒状部材先端側から筒状部材基端側に向かうに従って内径側突出量が増加する傾斜面を備えているから、継手部材の筒状部材への挿入に伴って、当該筒状部材が傾斜面に当接し易くなる。   According to the above characteristic configuration, since the disengagement portion includes the inclined surface in which the protruding amount on the inner diameter side increases from the distal end side of the tubular member toward the proximal end side of the tubular member, the tubular member of the joint member is provided. With the insertion, the cylindrical member easily comes into contact with the inclined surface.

本発明の誤接続防止装置の更なる特徴構成は、
前記対向傾斜部は、当該対向傾斜部が設けられる前記連結部材の内周面全体に亘って設けられると共に、当該連結部材が、相手側の連結部材とともに前記筒状部材を形成している筒形成状態において、筒状部材先端側から筒状部材基端側へ向けて内径を減少させる点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
The opposed inclined portion is provided over the entire inner peripheral surface of the connecting member provided with the opposed inclined portion, and the connecting member forms the cylindrical member together with the mating connecting member. In this state, the inner diameter decreases from the distal end side of the tubular member toward the proximal end side of the tubular member.

上記特徴構成によれば、対向傾斜部は、係合解除部に対向する部位を含み、当該対向傾斜部が設けられる連結部材の内周面全体に渡って設けられ、筒状部材先端側から筒状部材基端側へ向けて筒状部材の内径を減少させるものであるから、継手部材の筒状部材への挿入に伴って、継手部材を適切に係合解除部の側へ導くことができる。   According to the above characteristic configuration, the opposed inclined portion includes a portion facing the disengagement portion, is provided over the entire inner peripheral surface of the connecting member provided with the opposed inclined portion, and is formed from the cylindrical member front end side to the cylinder. Since the inner diameter of the cylindrical member is reduced toward the base end side of the cylindrical member, the joint member can be appropriately guided to the side of the disengagement portion as the joint member is inserted into the cylindrical member. .

本発明の誤接続防止装置の更なる特徴構成は、
前記プラグの基端側に径方向外側へ突出する突出部を備えたプラグを装着対象とし、
前記筒状部材は、前記装着状態において、筒状部材基端側に、前記プラグの前記突出部が嵌り込む切欠溝を備え、前記突出部の前記切欠溝への嵌り込みにより前記筒状部材が前記プラグの軸心周りで位置決めされる点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
The plug is provided with a projecting portion projecting radially outward on the base end side of the plug,
The tubular member includes a cutout groove into which the protruding portion of the plug is fitted on the proximal end side of the tubular member in the mounted state, and the tubular member is inserted into the cutout groove by fitting the protruding portion into the cutout groove. It is at a point positioned around the axis of the plug.

本願の誤接続防止装置の装着対象のプラグには、その接続部の基端側に径方向外側へ突出する突出部を有するものがある。
本発明にあっては、筒状部材のプラグの接続部への装着状態において、筒状部材が、筒状部材基端側に、プラグの突出部が嵌り込む切欠溝を備えているから、筒状部材のプラグ軸心周りでの回転を防止できる。これにより、筒状部材に設けられる係合部及び被係合部を、使用者が直接操作し難い方向、例えば、鉛直下方方向や、プラグが設けられるガス機器の裏面側へ向けて位置決めすることができ、係合部と被係合部との係合を、使用者の直接操作（例えば、係合部を指で直接変形操作する）により解除され難い装着状態を維持できる。 Some plugs to which the erroneous connection preventing device of the present application is attached have a protruding portion that protrudes radially outward on the proximal end side of the connecting portion.
In the present invention, when the tubular member is attached to the connecting portion of the plug, the tubular member has a notch groove into which the protruding portion of the plug fits on the tubular member proximal end side. Rotation around the plug axis of the shaped member can be prevented. Accordingly, the engaging portion and the engaged portion provided on the tubular member are positioned in a direction that is difficult for the user to directly operate, for example, in a vertically downward direction or on the back surface side of the gas device in which the plug is provided. Thus, it is possible to maintain a mounting state in which the engagement between the engaging portion and the engaged portion is difficult to be released by a user's direct operation (for example, by directly deforming the engaging portion with a finger).

本発明の誤接続防止装置の更なる特徴構成は、
ガスが供給されるガス機器の壁面に備えられるプラグを装着対象とし、
前記筒状部材は、前記係合部及び前記被係合部を前記ガス機器の壁面側に位置させた状態で、前記プラグの軸心周りに位置決めされる点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
For plugs on the wall of gas equipment to which gas is supplied,
The tubular member is positioned around the axial center of the plug in a state where the engaging portion and the engaged portion are positioned on the wall surface side of the gas device.

ガスが供給されるガス機器の壁面（例えば裏面）に備えられるプラグを装着対象とする場合、その係合部及び被係合部をガス機器の壁面側に位置させた状態で、筒状部材をプラグの軸心周りに位置決めすることで、係合部及び被係合部に対向する位置にガス機器の壁面が存在することになるから、例えば、使用者が係合部及び被係合部を外部から操作して、誤接続防止装置を、取り外してしまうことを防止できる。
ここで、係合部及び被係合部とガス機器の壁面との距離は、使用者の指が入らない程度とすることが好ましい。 When a plug provided on a wall surface (for example, the back surface) of a gas device to which gas is supplied is to be mounted, the cylindrical member is placed with its engaging portion and engaged portion positioned on the wall surface side of the gas device. By positioning the plug around the axis of the plug, the wall surface of the gas device exists at a position opposite to the engaging portion and the engaged portion. For example, the user can set the engaging portion and the engaged portion. It is possible to prevent the erroneous connection prevention device from being removed by operating from the outside.
Here, it is preferable that the distance between the engaging portion and the engaged portion and the wall surface of the gas device is such that the user's finger cannot enter.

本発明の誤接続防止装置の更なる特徴構成は、
前記係合部が係合爪として、前記被係合部が係合孔として構成され、
前記係合解除用弾性変形部は、前記連結部材本体の前記一部側に、前記係合解除部を備えるとともに、前記他部側に、前記係合孔を備えている点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
The engaging portion is configured as an engaging claw, and the engaged portion is configured as an engaging hole.
The disengagement elastic deformation portion is provided with the disengagement portion on the part side of the connecting member main body and the engagement hole on the other portion side.

上記特徴構成によれば、係合解除用弾性変形部には、弾性変形の変形支点である一部側に係合解除部を備え、弾性変形の変形移動側である他部側に係合孔を備えているから、係合解除部が継手部材に押圧され、係合解除用弾性変形部が変形したときの、他部側の係合孔の移動量を大きくとることができ、当該係合孔への係合爪の係合を解除し易くできる。
つまり、これにより、継手部材が筒状部材に挿入された場合には、容易に脱離する誤接続防止装置を実現できる。 According to the above characteristic configuration, the disengagement elastic deformation portion is provided with the disengagement portion on one side which is a deformation fulcrum of elastic deformation, and the engagement hole on the other portion side which is the deformation movement side of elastic deformation. Therefore, when the disengagement portion is pressed by the joint member and the disengagement elastic deformation portion is deformed, the amount of movement of the engagement hole on the other portion side can be increased, and the engagement It is possible to easily release the engagement claw from the hole.
That is, by this, when the joint member is inserted into the cylindrical member, an erroneous connection preventing device that can be easily detached can be realized.

本発明の誤接続防止装置の更なる特徴構成は、
前記一の連結部材に設けられる前記係合解除用弾性変形部の他部側端部は、前記一部側から前記他部側へ向けて膨出する膨出部を備え、
前記他の連結部材は、前記係合部と前記被係合部との係合状態において、前記膨出部を受け入れる受入部を備え、
前記受入部及び前記膨出部は、前記受入部が前記膨出部を受け入れる受け入れ状態において、前記係合解除用弾性変形部の弾性変形を抑制する弾性変形抑制機構として働く点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
The other side end of the disengagement elastic deformation part provided in the one connecting member includes a bulging part that bulges from the part side toward the other part side,
The other connecting member includes a receiving portion that receives the bulging portion in an engaged state between the engaging portion and the engaged portion,
The receiving portion and the bulging portion function as an elastic deformation suppressing mechanism that suppresses elastic deformation of the disengagement elastic deformation portion when the receiving portion receives the bulging portion.

上記特徴構成によれば、係合解除用弾性変形部の他部側端部に設けられた膨出部は、係合部と被係合部との係合状態において、被係合部が備えられた他の連結部材に設けられる受入部に受け入れられ、係合解除用弾性変形部の弾性変形を抑制する弾性変形抑制機構として働くから、例えば、使用者が、筒状部材への継手部材の挿入を行わずに、プラグの接続部から筒状部材を取り外すことを、より適切に抑制できる。   According to the above characteristic configuration, the bulging portion provided at the other end portion of the disengagement elastic deformation portion is provided in the engaged portion in the engaged state between the engaging portion and the engaged portion. For example, the user can connect the joint member to the tubular member by being received by a receiving portion provided in the other connecting member and acting as an elastic deformation suppressing mechanism that suppresses elastic deformation of the elastic deformation portion for disengagement. It can suppress more appropriately that a cylindrical member is removed from the connection part of a plug, without performing insertion.

本発明の誤接続防止装置の更なる特徴構成は、
前記筒状部材の前記プラグの接続部への装着状態で、前記筒状部材の筒状部材先端側からの断面視において、
前記係合解除部の前記プラグの軸方向での筒状部材基端側部位と、それに対向する前記対向傾斜部の前記プラグの軸方向での筒状部材基端側部位との距離が、端部に継手部材を設けることなく使用されるホースの外径より大きく、前記継手部材の外径より小さく構成されている点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
In the mounting state of the tubular member to the plug connecting portion, in a cross-sectional view from the distal end side of the tubular member of the tubular member,
The distance between the tubular member proximal end portion in the axial direction of the plug of the disengagement portion and the tubular member proximal end portion in the axial direction of the plug of the opposed inclined portion opposed thereto is an end. It is in the point comprised larger than the outer diameter of the hose used without providing a joint member in a part, and smaller than the outer diameter of the said joint member.

上記特徴構成によれば、筒状部材に継手部材が挿入された場合には、筒状部材をプラグの接続部から適切に脱離するとともに、筒状部材にプラグの接続部からのゴムホースが挿入された場合には、筒状部材の脱離を抑制することができる。   According to the above characteristic configuration, when the joint member is inserted into the tubular member, the tubular member is appropriately detached from the connection portion of the plug, and the rubber hose from the connection portion of the plug is inserted into the tubular member. In this case, the detachment of the cylindrical member can be suppressed.

本発明の誤接続防止装置の更なる特徴構成は、
前記筒状部材を構成する一対の連結部材は、一体成型されている点にある。 A further characteristic configuration of the erroneous connection preventing device of the present invention is as follows.
The pair of connecting members constituting the cylindrical member is integrally formed.

上記特徴構成によれば、筒状部材を構成する一対の連結部材が一体成型されているから、容易に製造することができる。
また、一対の連結部材が、プラグの接続部から脱離した際に、一対の連結部材を一体として脱離させることができる。結果、脱離後に、使用者が、容易に一体の連結部材を回収できる。 According to the above characteristic configuration, since the pair of connecting members constituting the cylindrical member are integrally molded, it can be easily manufactured.
Further, when the pair of connecting members is detached from the connecting portion of the plug, the pair of connecting members can be detached as a unit. As a result, after the detachment, the user can easily collect the integral connecting member.

本発明の誤接続防止装置の使用方法の特徴は、
上述した誤接続防止装置が、前記プラグが設けられるガス機器の出荷時に前記プラグの接続部に取り付けられる点にある。 The feature of the method of using the erroneous connection prevention device of the present invention is as follows:
The above-described erroneous connection prevention device is that it is attached to the connecting portion of the plug at the time of shipment of the gas equipment provided with the plug.

上記特徴構成によれば、ガス機器の出荷時に誤接続防止装置が取り付けられるので、ガス機器を購入した使用者が、ガス機器の使用開始時において、ホースがプラグの接続部へ直接接続されることを防止できるとともに、継手部材をプラグの接続部へ良好に接続することができる。これにより、特に、誤接続状態が発生し易いガス機器の使用開始時において、誤接続の発生を良好に防止できる。   According to the above-mentioned characteristic configuration, since the misconnection prevention device is attached at the time of shipment of the gas equipment, the user who purchased the gas equipment can connect the hose directly to the connection portion of the plug at the start of use of the gas equipment. In addition, the joint member can be satisfactorily connected to the connecting portion of the plug. Thereby, it is possible to satisfactorily prevent the occurrence of misconnection, particularly at the start of use of a gas device that is likely to cause misconnection.

誤接続防止装置の係合部と被係合部とが係合状態にある場合の斜視図The perspective view when the engaging part and the engaged part of the erroneous connection preventing device are in the engaged state 誤接続防止装置の係合部と被係合部とが非係合状態（係合解除状態）にある場合の斜視図The perspective view when the engaging part and the engaged part of the erroneous connection preventing device are in a disengaged state (disengaged state) 誤接続防止装置を装着したプラグに継手部材を挿入する前の状態を示す斜視図The perspective view which shows the state before inserting a coupling member in the plug equipped with the incorrect connection prevention device 誤接続防止装置を装着したプラグに継手部材を挿入したことにより非係合状態へ移行したときの状態を示す斜視図The perspective view which shows the state when it transfers to a non-engagement state by inserting a coupling member in the plug with which the misconnection prevention device was equipped. 誤接続防止装置が非係合状態においてプラグに係止している状態を示す斜視図The perspective view which shows the state which the incorrect connection prevention device has latched to the plug in the non-engagement state 誤接続防止装置がプラグから脱離した状態を示す斜視図The perspective view which shows the state which the misconnection prevention apparatus removed from the plug （ａ）誤接続防止装置を装着したプラグに大径の継手部材を接続する場合のプラグの軸心での一部断面図、（ｂ）（ａ）のＶＩＩｂ断面図(A) Partial sectional view at the shaft center of the plug when connecting a large-diameter joint member to the plug equipped with the erroneous connection preventing device, (b) VIIb sectional view of (a) （ａ）誤接続防止装置を装着したプラグに大径の継手部材を接続する場合のプラグの軸心での一部断面図、（ｂ）（ａ）のＶＩＩＩｂ断面図(A) Partial cross-sectional view at the shaft center of the plug when connecting a large-diameter joint member to the plug equipped with the erroneous connection prevention device, (b) VIIIb cross-sectional view of (a) （ａ）誤接続防止装置を装着したプラグに大径の継手部材を接続する場合のプラグの軸心での一部断面図、（ｂ）（ａ）のＩＸｂ断面図(A) Partial cross-sectional view at the shaft center of the plug when connecting a large-diameter joint member to the plug equipped with the erroneous connection prevention device, (b) IXb cross-sectional view of (a) （ａ）誤接続防止装置を装着したプラグに小径の継手部材を接続する場合のプラグの軸心での一部断面図、（ｂ）（ａ）のＸｂ断面図(A) Partial cross-sectional view at the shaft center of the plug when a small-diameter joint member is connected to the plug equipped with the erroneous connection prevention device, (b) Xb cross-sectional view of (a) （ａ）誤接続防止装置を装着したプラグに小径の継手部材を接続する場合のプラグの軸心での一部断面図、（ｂ）（ａ）のＸＩｂ断面図(A) Partial cross-sectional view at the shaft center of the plug when a small-diameter joint member is connected to the plug equipped with the erroneous connection prevention device, (b) XIb cross-sectional view of (a) （ａ）誤接続防止装置を装着したプラグに小径の継手部材を接続する場合のプラグの軸心での一部断面図、（ｂ）（ａ）のＸＩＩｂ断面図(A) Partial cross-sectional view at the axis of the plug when connecting a small-diameter joint member to the plug equipped with the erroneous connection prevention device, (b) XIIb cross-sectional view of (a) 誤接続防止装置を装着したプラグにゴムホースを挿入する場合の一部断面図Partial cross-sectional view when inserting a rubber hose into a plug equipped with an incorrect connection prevention device プラグの接続部への継手部材の非接続状態と接続状態とを示す一部断面図Partial sectional view showing the non-connected state and the connected state of the joint member to the connecting portion of the plug

以下、ガス機器に設けられるプラグ４０の接続部４８への継手部材２０の接続構造に関し、プラグ４０に本発明の誤接続防止装置１００を備えた場合の実施形態を、図面に基づいて説明する。尚、プラグ４０の構成、継手部材２０の構成、プラグ４０への継手部材２０の接続動作、及びプラグ４０からの継手部材２０の分離動作のうち、背景技術において図７に基づいて説明したものと同様の構成、及び同様の動作については、同様の符号を付すこととし、その説明を割愛することがある。   Hereinafter, regarding the connection structure of the joint member 20 to the connection portion 48 of the plug 40 provided in the gas appliance, an embodiment in which the plug 40 includes the erroneous connection prevention device 100 of the present invention will be described based on the drawings. Of the configuration of the plug 40, the configuration of the joint member 20, the connection operation of the joint member 20 to the plug 40, and the separation operation of the joint member 20 from the plug 40, those described in the background art with reference to FIG. Similar configurations and similar operations are denoted by the same reference numerals, and descriptions thereof may be omitted.

本発明の誤接続防止装置１００は、特に、ゴムホース８０が直接接続される誤接続状態を防止しながらも、プラグ４０の接続部４８へ継手部材２０が正常に接続される正常接続状態を円滑に実行できるものである。
特に、プラグ４０の接続部４８へ当該誤接続防止装置１００が装着されている装着状態において、プラグ４０の接続部４８へ継手部材２０を接続させる場合に、継手部材２０が様々な外径を有する場合にも、その接続を円滑に実行させるべく、誤接続防止装置１００を、積極的にプラグ４０から脱離するように構成している。 The erroneous connection prevention device 100 of the present invention smoothly smoothes the normal connection state in which the joint member 20 is normally connected to the connection portion 48 of the plug 40 while preventing the erroneous connection state in which the rubber hose 80 is directly connected. It can be executed.
In particular, when the joint member 20 is connected to the connection portion 48 of the plug 40 in a state where the erroneous connection prevention device 100 is attached to the connection portion 48 of the plug 40, the joint member 20 has various outer diameters. Even in such a case, the erroneous connection prevention device 100 is configured to be actively detached from the plug 40 in order to smoothly perform the connection.

誤接続防止装置１００は、図１、２に示すように、一対の連結部材６０が一体成型されて成り、プラグ４０に装着された装着状態で筒状となる筒状部材５０として構成されている。
筒状部材５０は、図１、２に示すように、一の連結部材６０ｂと他の連結部材６０ａとの間を、ヒンジ部６０ｃにて連結する状態で一体成型されており、当該ヒンジ部６０ｃを回転中心として、一の連結部材６０ｂと他の連結部材６０ａとが互い対して回動自在、即ち、他端側が自由端となるように構成されている。
一方、当該他端側の自由端には、一の連結部材６０ｂに係合部６１が設けられるとともに、他の連結部材６０ａには係合部６１が係合する被係合部６２が設けられている。
一の連結部材６０ｂと他の連結ぶ６０ｂとは、図３に示すように、係合部６１と被係合部６２とが係合する係合状態において、プラグ４０の接続部４８の軸心周りを外囲する円筒形状を有する筒状部材５０を構成する。 As shown in FIGS. 1 and 2, the erroneous connection prevention device 100 is formed as a cylindrical member 50 that is formed by integrally molding a pair of connecting members 60 and that is cylindrical when mounted on the plug 40. .
As shown in FIGS. 1 and 2, the cylindrical member 50 is integrally molded in a state where one connecting member 60 b and another connecting member 60 a are connected by a hinge portion 60 c. The one connecting member 60b and the other connecting member 60a are rotatable with respect to each other, that is, the other end side is a free end.
On the other hand, at the free end on the other end side, an engaging portion 61 is provided on one connecting member 60b, and an engaged portion 62 on which the engaging portion 61 is engaged is provided on the other connecting member 60a. ing.
As shown in FIG. 3, one connecting member 60 b and the other connecting member 60 b are connected to each other in an engaged state in which the engaging portion 61 and the engaged portion 62 are engaged. A cylindrical member 50 having a cylindrical shape surrounding the periphery is configured.

筒状部材５０は、プラグ４０の接続部４８に装着される装着状態を維持すべく、図５に示すように、プラグ基端側（図５で矢印Ｘの基端側）でプラグ４０の大径部４４の外径部位に嵌合すると共に、プラグ軸方向（図３、５で矢印Ｘに沿う方向）でプラグ４０のプラグ基端側部位４９ａに当接する当接部位５０ａを有する。   As shown in FIG. 5, the tubular member 50 is large on the plug base end side (the base end side of the arrow X in FIG. 5) so as to maintain the mounting state in which the cylindrical member 50 is attached to the connection portion 48 of the plug 40. The contact portion 50a is fitted to the outer diameter portion of the diameter portion 44 and abuts against the plug proximal end portion 49a of the plug 40 in the plug axial direction (the direction along the arrow X in FIGS. 3 and 5).

さらに、筒状部材５０は、図４に示すように、当接部位５０ａの基端側に、プラグ４０の大径部４４のプラグ基端側部位４９ａの外径部位に沿う環状部位８３が設けれ、当該環状部位８３の一部に、筒状部材基端側（図４で矢印Ｘの基端側）から切り欠かれる切欠溝８３ａが設けられている（図１（ａ）参照）。
図４に示すように、本願の誤接続防止装置１００が、プラグ４０の基端側の環状部位８３に、径方向外側へ突出する突出部４９ｂを備えたものを装着対象とし、筒状部材５０のプラグ４０の接続部４８への装着状態において、当該突出部４９ｂに筒状部材５０の切欠溝８３ａが嵌り込みにより、筒状部材５０がプラグ４０の軸心周りで位置決めされる。
これにより、図３に示すように、プラグ４０がガス機器２００の裏面２００ａに設けられるプラグに、筒状部材５０の係合部６１及び被係合部６２を、当該ガス機器２００の裏面２００ａ側に向けた状態で位置決めし、使用者に係合部６１及び被係合部６２を外部から直接操作され難い装着状態を実現する。
ここで、係合部６１及び被係合部６２と、ガス機器２００の裏面２００ａとの距離は、使用者の指が入らない適度の距離に設定される。 Further, as shown in FIG. 4, the tubular member 50 is provided with an annular portion 83 along the outer diameter portion of the plug proximal end portion 49a of the large diameter portion 44 of the plug 40 on the proximal end side of the contact portion 50a. In addition, a part of the annular portion 83 is provided with a notch groove 83a that is notched from the tubular member base end side (the base end side of the arrow X in FIG. 4) (see FIG. 1A).
As shown in FIG. 4, the erroneous connection preventing apparatus 100 of the present application is intended to be attached to a ring-shaped portion 83 on the proximal end side of the plug 40 and has a protruding portion 49 b protruding outward in the radial direction. In the mounting state of the plug 40 to the connection portion 48, the tubular member 50 is positioned around the axial center of the plug 40 by fitting the cutout groove 83 a of the tubular member 50 into the protruding portion 49 b.
As a result, as shown in FIG. 3, the plug 40 is provided on the back surface 200 a of the gas device 200, and the engaging portion 61 and the engaged portion 62 of the tubular member 50 are connected to the back surface 200 a side of the gas device 200. In this state, the mounting portion 61 and the engaged portion 62 are difficult to be directly operated from the outside by the user.
Here, the distance between the engaging portion 61 and the engaged portion 62 and the back surface 200a of the gas device 200 is set to an appropriate distance that does not allow the user's finger to enter.

筒状部材５０は、装着状態をより安定にすべく、図５、６に示すように、一の連結部材６０ｂ及び他の連結部材６０ａの内周部位に、接続部４８のロック溝部４２にその周方向に沿って嵌り込む円弧状嵌合部７１を備えている。 さらに、筒状部材５０は、図２、５〜１２に示すように、一の連結部材６０ｂ及び他の連結部材６０ａの内周部位で、上記円弧状嵌合部７１より筒状部材先端側（図２、５〜１２で、矢印Ｘの先端側）に、筒状部材先端側の外部から、プラグ４０の接続部４８を隔離する隔離壁８５を備えている。これにより、筒状部材５０のプラグ４０の接続部４８への装着状態において、筒状部材先端側の外部から、プラグ４０の接続部４８を隔離することができ、接続部４８にゴムホース８０が直接接続されることを防止できる。また、プラグ４０の接続部４８に塵埃が付着することを防止できる。   As shown in FIGS. 5 and 6, the cylindrical member 50 is formed on the inner peripheral portion of one connecting member 60 b and the other connecting member 60 a in the lock groove portion 42 of the connecting portion 48 in order to make the mounting state more stable. An arcuate fitting portion 71 that is fitted along the circumferential direction is provided. Furthermore, as shown in FIGS. 2 and 5 to 12, the cylindrical member 50 is an inner peripheral portion of one connecting member 60 b and another connecting member 60 a, and the cylindrical member distal end side from the arcuate fitting portion 71 ( In FIGS. 2 and 5 to 12, an isolation wall 85 that isolates the connection portion 48 of the plug 40 from the outside on the distal end side of the cylindrical member is provided on the distal end side of the arrow X. Thereby, in the state where the tubular member 50 is attached to the connection portion 48 of the plug 40, the connection portion 48 of the plug 40 can be isolated from the outside on the distal end side of the tubular member, and the rubber hose 80 is directly connected to the connection portion 48. It can be prevented from being connected. Further, it is possible to prevent dust from adhering to the connection portion 48 of the plug 40.

〔筒状部材の脱離に係る構成〕
以上の構成により、筒状部材５０は、プラグ４０の接続部４８に対しその接続状態を良好に維持可能に構成されているのであるが、本願の誤接続防止装置１００では、以下に詳述するように、筒状部材５０の内周部位に内径側への突出量が、筒状部材先端側から筒状部材基端側（図１、２で矢印Ｘの先端側から基端側）へ向けて増加する対向傾斜部８１及び係合解除部８６を備えることにより、異なる外径の継手部材２０が使用される場合であっても、筒状部材５０への継手部材２０の挿入により、円滑にプラグ４０の接続部４８から脱離するように構成されている。 [Configuration related to detachment of cylindrical member]
With the above configuration, the cylindrical member 50 is configured to be able to maintain its connection state with respect to the connection portion 48 of the plug 40, but the erroneous connection prevention device 100 of the present application will be described in detail below. As described above, the protruding amount toward the inner diameter side of the inner peripheral portion of the tubular member 50 is directed from the distal end side of the tubular member to the proximal end side of the tubular member (from the distal end side to the proximal end side of the arrow X in FIGS. 1 and 2). Even when the joint member 20 having a different outer diameter is used, the insertion of the joint member 20 into the tubular member 50 facilitates smoothness. The plug 40 is configured to be detached from the connection portion 48.

図１、図２に示すように、一の連結部材６０ｂには係合部６１として係合爪６１ａが設けられると共に、他の連結部材６０ａには係合部６１に係合する被係合部６２として係合孔６２ａが設けられている。当該被係合部６２を備えた他の連結部材６０ａには、連結部材本体６０ｅと一部で一体化され、他部が連結部材本体６０ｅに対して揺動自在に構成されている係合解除用弾性変形部６２ｂが設けられている。
当該係合解除用弾性変形部６２ｂには、図２、３に示すように、筒状部材５０のプラグ４０の接続部４８への装着状態において、筒状部材５０の内径側へ突出するとともに、継手部材２０の挿入に伴う継手部材２０の当接により外径側へ揺動して、係合爪６１ａと係合孔６２ａとの係合を解除する係合解除部８６が設けられている。
当該係合解除部８６は、筒状部材先端側から筒状部材基端側（図２、３で矢印Ｘの矢示方向と逆側）へ向かうに従って、内径側への突出量が増加する傾斜面となっている。
一方、係合解除部８６が設けられている連結部材の内周で、前記係合解除部８６以外の内面は、継手部材２０の係合解除部８６側への移動において、現状で使用される継手部材の先端径が最大のもの（最大継手部材）でも、直接当接しない形状に保たれている。 As shown in FIGS. 1 and 2, one connecting member 60 b is provided with an engaging claw 61 a as an engaging portion 61, and the other connecting member 60 a is an engaged portion that engages with the engaging portion 61. An engagement hole 62 a is provided as 62. The other connecting member 60a provided with the engaged portion 62 is partly integrated with the connecting member main body 60e, and the other part is configured to be swingable with respect to the connecting member main body 60e. The elastic deformation part 62b for use is provided.
As shown in FIGS. 2 and 3, the disengagement elastic deformation portion 62 b protrudes toward the inner diameter side of the tubular member 50 in a state where the tubular member 50 is attached to the connection portion 48. An engagement release portion 86 is provided that swings toward the outer diameter side when the joint member 20 comes into contact with the insertion of the joint member 20 to release the engagement between the engagement claw 61a and the engagement hole 62a.
The disengagement portion 86 is inclined such that the amount of protrusion toward the inner diameter side increases from the distal end side of the tubular member toward the proximal end side of the tubular member (opposite to the direction indicated by the arrow X in FIGS. 2 and 3). It is a surface.
On the other hand, the inner surface of the connecting member provided with the disengagement part 86, the inner surface other than the disengagement part 86 is currently used in the movement of the joint member 20 toward the disengagement part 86. Even when the joint member has the largest tip diameter (maximum joint member), the joint member is kept in a shape that does not directly contact.

一方、図２、５、６に示すように、筒状部材５０の内周面のうち、少なくとも、係合解除部８６に対向する部位、好ましくは、係合解除部８６が設けられる一の連結部材６０ｂに対向する他の連結部材６０ａの内周面全体に亘る部位に、筒状部材先端側から筒状部材基端側（図２、５、６で矢印Ｘの矢示方向と逆側）へ向かうに伴って、内径側への突出量が増加する対向傾斜部８１を備えている。
即ち、当該対向傾斜部８１が設けられることにより、筒状部材５０の筒状部材先端側からの断面視（図７（ａ）のＶＩＩｂ断面視である図７（ｂ））において、筒状部材５０の内径は、係合解除部８６と対向傾斜部８１とを結ぶ軸を短軸とする略楕円形状を有することになる。
当該構成により、図７（ａ）、図８（ａ）、図９（ａ）に状態遷移を示すように、筒状部材５０のプラグ４０の接続部４８への装着状態において、継手部材２０が筒状部材５０へ挿入される場合、継手部材２０が、対向傾斜部８１に沿って摺動することで、係合解除部８６へ近づき当接し、係合爪６１ａと係合孔６２ａとの係合が解除される。
図７（ａ）、図８（ａ）、図９（ａ）は、先に説明した最大継手部材の例である。 On the other hand, as shown in FIGS. 2, 5, and 6, at least one part of the inner peripheral surface of the cylindrical member 50 that faces the disengagement part 86, preferably one connection in which the disengagement part 86 is provided. From the distal end side of the tubular member to the proximal end side of the tubular member (on the side opposite to the direction indicated by the arrow X in FIGS. 2, 5, and 6) in the region extending over the entire inner peripheral surface of the other connecting member 60 a facing the member 60 b. A counter inclined part 81 is provided in which the amount of protrusion toward the inner diameter side increases.
That is, by providing the opposing inclined portion 81, the tubular member 50 in the sectional view from the distal end side of the tubular member 50 (FIG. 7B, which is a sectional view taken along the line VIIb in FIG. 7A). The inner diameter of 50 has a substantially elliptical shape with the axis connecting the disengagement portion 86 and the opposing inclined portion 81 as the short axis.
With this configuration, as shown in FIG. 7 (a), FIG. 8 (a), and FIG. 9 (a), in the mounting state of the tubular member 50 to the connection portion 48 of the plug 40, the joint member 20 is When the joint member 20 is inserted into the cylindrical member 50, the joint member 20 slides along the opposing inclined portion 81 so as to approach and come into contact with the disengagement portion 86, and the engagement claw 61a and the engagement hole 62a are engaged with each other. The match is released.
FIG. 7A, FIG. 8A, and FIG. 9A are examples of the maximum joint member described above.

尚、係合解除用弾性変形部６２ｂにおいては、その一部側（連結部材本体６０ｅと一体化されている側）に、上述した係合解除部８６が設けられ、その他部側に係合孔６２ａが設けられており、係合解除部８６に継手部材２０が当接したときに、係合孔６２ａと係合爪６１ａとの係合が解除され易い配置となっている。   In the disengagement elastic deformation portion 62b, the disengagement portion 86 described above is provided on a part thereof (side integrated with the connecting member main body 60e), and an engagement hole is provided on the other portion side. 62a is provided, and when the joint member 20 comes into contact with the engagement release portion 86, the engagement between the engagement hole 62a and the engagement claw 61a is easily released.

係合解除用弾性変形部６２ｂの他部側端部には、図２に示すように、一部側（連結側）から他部側（図２で矢印Ｙの矢示側で、周方向で本体から離間する側の揺動端側）へ向けて膨出する膨出部８２（当該実施形態では２つ）が設けられている。一方、係合孔６２ａが設けられた他の連結部材６０ａは、図５、６に示すように、係合爪６１ａと係合孔６２ａとの係合状態において、膨出部８２を受け入れる受入部８７（当該実施形態では２つ）が設けられている。
当該膨出部８２及び受入部８７は、受入部８７が膨出部８２を受け入れる受け入れ状態において、係合解除用弾性変形部６２ｂの弾性変形（揺動変形）を抑制する弾性変形抑制機構として働く。 As shown in FIG. 2, the elastic deformation portion 62b for disengaging the disengagement part has an end on the other side (in the direction of the arrow Y in FIG. There are provided bulging portions 82 (two in the present embodiment) that bulge toward the swing end side on the side away from the main body. On the other hand, as shown in FIGS. 5 and 6, the other connecting member 60a provided with the engaging hole 62a is a receiving portion that receives the bulging portion 82 in the engaged state between the engaging claw 61a and the engaging hole 62a. 87 (two in this embodiment) are provided.
The bulging portion 82 and the receiving portion 87 function as an elastic deformation suppressing mechanism that suppresses elastic deformation (oscillation deformation) of the disengagement elastic deformation portion 62b in a receiving state where the receiving portion 87 receives the bulging portion 82. .

＜係合解除部と対向傾斜部の位置関係＞
図７〜９に示すように、一の連結部材６０ｂと他の連結部材６０ａとが筒状部材５０を形成している状態、即ち、装着状態で、当該筒状部材５０の軸方向（図７〜９で矢印Ｘに沿う方向）で、対向傾斜部８１の筒状部材先端側の端部は、係合解除部８６の筒状部材基端側の端部よりも、筒状部材先端側に位置している。これにより、継手部材２０は、その筒状部材５０への挿入により、係合解除部８６の側へ導かれることとなる。 <Position relationship between the disengagement portion and the opposite inclined portion>
As shown in FIGS. 7 to 9, in the state where one connecting member 60 b and the other connecting member 60 a form the cylindrical member 50, that is, in the mounted state, the axial direction of the cylindrical member 50 (FIG. 7). (The direction along the arrow X in FIG. 9), the end of the opposed inclined portion 81 on the distal end side of the tubular member is closer to the distal end side of the tubular member than the end of the disengagement portion 86 on the proximal end side of the tubular member. positioned. Thus, the joint member 20 is guided to the engagement release portion 86 side by insertion into the tubular member 50.

＜筒状部材の内径、継手部材の外径、ホースの外径の関係＞
本発明にあっては、図７（ａ）（ｂ）に示すように、筒状部材５０のプラグ４０の接続部４８への装着状態で、筒状部材５０の筒状部材先端側からの断面視（図７（ａ）のＶＩＩｂ断面で、図７（ｂ））において、係合解除部８６のプラグ４０の軸方向の筒状部材基端側部位と、それに対向する対向傾斜部８１のプラグ４０の軸方向での筒状部材基端側部位との距離Ｌ１が、継手部材２０の外径Ｌ２ａより小さく構成されている。
これにより、継手部材２０のプラグ４０の接続部４８への接続動作において、以下に示すように、プラグ４０の接続部４８から誤接続防止装置１００が適切に脱離し、接続動作が実行できるようになっている。 <Relationship between inner diameter of cylindrical member, outer diameter of joint member, and outer diameter of hose>
In the present invention, as shown in FIGS. 7 (a) and 7 (b), a cross-section from the distal end side of the tubular member 50 in a state where the tubular member 50 is attached to the connecting portion 48 of the plug 40. As viewed (in the section VIIb in FIG. 7 (a), FIG. 7 (b)), the tubular member proximal end portion in the axial direction of the plug 40 of the disengagement portion 86 and the plug of the opposing inclined portion 81 facing it. The distance L1 with the tubular member proximal end portion in the axial direction of 40 is configured to be smaller than the outer diameter L2a of the joint member 20.
Thereby, in the connection operation | movement to the connection part 48 of the plug 40 of the coupling member 20, as shown below, the erroneous connection prevention apparatus 100 can detach | leave appropriately from the connection part 48 of the plug 40, and connection operation can be performed. It has become.

＜プラグへの継手部材の接続動作＞
次に、本願の誤接続防止装置１００をプラグ４０の接続部４８へ装着している場合に、プラグ４０の接続部４８への継手部材２０の接続動作の各段階における、誤接続防止装置１００の働きを、図面に基づいて説明する。 <Connection operation of joint member to plug>
Next, when the erroneous connection prevention device 100 of the present application is attached to the connection portion 48 of the plug 40, the erroneous connection prevention device 100 at each stage of the connection operation of the joint member 20 to the connection portion 48 of the plug 40. The function will be described with reference to the drawings.

図３、図７（ａ）、図７（ｂ）に示す継手部材２０がプラグ４０の接続部４８へ接続される接続状態へ移行する前の状態において、筒状部材５０は、プラグ４０の接続部４８の全周囲を外囲する状態で、プラグ４０の接続部４８に装着されている。このとき、プラグ４０の接続部４８には、ゴムホース８０を接続する、所謂、誤接続状態となることはない。また、プラグ４０の接続部４８は、外部から完全に隔離される状態となるため、接続部４８に塵埃が付着することを防止できる。
尚、このとき、図示は省略するが、一対の連結部材６０ａ、６０ｂのうち、一方の連結部材６０ｂに設けられる切欠溝８３ａに、プラグ４０の突出部４９ｂが嵌り込んでおり、プラグ４０の軸心周りでの筒状部材５０の位置が固定されている。 In a state before the joint member 20 shown in FIGS. 3, 7 (a), and 7 (b) is shifted to a connection state where the joint member 20 is connected to the connection portion 48 of the plug 40, the tubular member 50 is connected to the plug 40. The plug 48 is attached to the connecting portion 48 so as to surround the entire periphery of the portion 48. At this time, the so-called erroneous connection state in which the rubber hose 80 is connected to the connection portion 48 of the plug 40 does not occur. Further, since the connection portion 48 of the plug 40 is completely isolated from the outside, it is possible to prevent dust from adhering to the connection portion 48.
In addition, although illustration is abbreviate | omitted at this time, the protrusion part 49b of the plug 40 is fitted in the notch groove 83a provided in one connection member 60b among a pair of connection members 60a and 60b, and the axis | shaft of the plug 40 is shown. The position of the cylindrical member 50 around the center is fixed.

図４、図８（ａ）、図８（ｂ）に示す接続状態への移行過程において、継手部材２０が筒状部材５０に挿入されると、継手部材２０が、筒状部材５０の内周に形成される対向傾斜部８１に沿って摺動することにより、当該対向傾斜部８１に対向する位置に設けられる係合解除部８６に近づいて当接し、係合解除用弾性変形部６２ｂの弾性変形に伴って、係合爪６１ａの係合孔６２ａに対する係合が解除される。   When the joint member 20 is inserted into the tubular member 50 in the transition process to the connected state shown in FIGS. 4, 8 (a), and 8 (b), the joint member 20 becomes the inner periphery of the tubular member 50. By sliding along the opposing inclined portion 81 formed on the contact portion, it approaches and comes into contact with the disengaging portion 86 provided at a position facing the opposing inclined portion 81, and the elasticity of the disengaging elastic deformation portion 62b. Along with the deformation, the engagement of the engagement claw 61a with the engagement hole 62a is released.

図４に示すように、一対の連結部材６０ａ、６０ｂのうち、一方の連結部材６０ｂに設けられる切欠溝８３ａに、プラグ４０の突出部４９ｂが嵌り込んでいる。
このため、図５、図９（ａ）、図９（ｂ）に示す接続状態への移行過程において、一対の連結部材６０ａ、６０ｂのうち、他方の連結部材６０ｂのみが、プラグ４０の接続部４８から脱離する。 As shown in FIG. 4, the protruding portion 49 b of the plug 40 is fitted into a notch groove 83 a provided in one of the pair of connecting members 60 a and 60 b.
Therefore, in the transition process to the connection state shown in FIGS. 5, 9A, and 9B, only the other connection member 60b of the pair of connection members 60a, 60b is the connection portion of the plug 40. Detach from 48.

図６に示す継手部材２０の接続状態への移行前において、使用者は、一方の連結部材６０ｂの切欠溝８３ａへの突出部４９ｂの嵌り込みを解除すべく、一方の連結部材６０ｂを取り外した後、プラグ４０の接続部４８への継手部材２０の接続を完了する。   Before the transition to the connection state of the joint member 20 shown in FIG. 6, the user removes one of the connecting members 60b in order to release the fitting of the protrusion 49b into the cutout groove 83a of the one connecting member 60b. Thereafter, the connection of the joint member 20 to the connection portion 48 of the plug 40 is completed.

本願の誤接続防止装置１００にあっては、筒状部材５０の内周に対向傾斜部８１を設けているから、図１０〜１２に示すように、その外径が小さい継手部材２０（Ｌ２ｂ＜Ｌ２ａ）を用いる場合にも、当該誤接続防止装置１００をプラグ４０の接続部４８から脱離させ、正常接続状態へ移行させることができる。継手部材２０のプラグ４０の接続部４８への接続過程については、上述した外径が大きい継手部材２０と同様であるため、ここではその詳細な説明を割愛する。このように比較的小径の継手部材２０の場合は、係合解除部８６側への移動量が大きくなるのみである。   In the erroneous connection preventing apparatus 100 of the present application, since the opposed inclined portion 81 is provided on the inner periphery of the cylindrical member 50, as shown in FIGS. 10 to 12, the joint member 20 (L2b < Also in the case of using L2a), the erroneous connection prevention device 100 can be detached from the connection portion 48 of the plug 40 and shifted to a normal connection state. Since the connection process of the joint member 20 to the connection portion 48 of the plug 40 is the same as that of the joint member 20 having a large outer diameter, detailed description thereof is omitted here. Thus, in the case of the relatively small-diameter joint member 20, only the amount of movement toward the disengagement portion 86 is increased.

＜プラグへのホースの誤った直接接続動作＞
ゴムホース８０は、継手部材２０と一体に設けられているホース１０とは、別のものを意味し、継手部材２０を先端に備えることなく単体で使用されるホースであり、一般的にホース１０の外径よりも大きい外径を有するものである（Ｌ３＜Ｌ１）。本発明にあっては、当該ゴムホース８０につき、以下の関係を満たすように構成されている。
ここで説明の都合上、図７（ａ）（ｂ）を参酌し、筒状部材５０のプラグ４０の接続部４８への装着状態で、筒状部材５０の筒状部材先端側からの断面視（図７（ａ）のＶＩＩｂ断面で、図７（ｂ））において、係合解除部８６のプラグ４０の軸方向の筒状部材基端側部位と、それに対向する対向傾斜部８１のプラグ４０の軸方向での筒状部材基端側部位との距離Ｌ１が、ゴムホース８０の外径Ｌ３よりも大きく構成されている。 <Incorrect direct connection of hose to plug>
The rubber hose 80 is different from the hose 10 provided integrally with the joint member 20 and is a hose that is used alone without providing the joint member 20 at the tip. The outer diameter is larger than the outer diameter (L3 <L1). In the present invention, the rubber hose 80 is configured to satisfy the following relationship.
For convenience of explanation, FIGS. 7A and 7B are referred to, and a cross-sectional view of the tubular member 50 from the distal end side of the tubular member 50 when the tubular member 50 is attached to the connecting portion 48 of the plug 40. (In the section VIIb in FIG. 7A, FIG. 7B) In the axial direction of the tubular member proximal end portion of the plug 40 of the disengagement portion 86 and the plug 40 of the opposing inclined portion 81 facing it. The distance L1 with the cylindrical member proximal end portion in the axial direction is configured to be larger than the outer diameter L3 of the rubber hose 80.

これにより、図１３（ａ）から図１３（ｂ）へのゴムホース８０の誤った直接接続動作において、ゴムホース８０の外径が、係合解除部８６に当接し難くなり、誤接続防止装置１００のプラグ４０の接続部４８への装着状態が維持され、ゴムホース８０の誤った直接接続動作が防止される。   Accordingly, in the erroneous direct connection operation of the rubber hose 80 from FIG. 13A to FIG. 13B, the outer diameter of the rubber hose 80 becomes difficult to contact the disengagement portion 86, and the erroneous connection preventing device 100 The state where the plug 40 is attached to the connection portion 48 is maintained, and an erroneous direct connection operation of the rubber hose 80 is prevented.

〔別実施形態〕
（１）上記実施形態では、一の連結部材６０ｂと他の連結部材６０ａとが、ヒンジ部６０ｃにて連結され、一体型に構成されている例を示した。
しかしながら、一の連結部材６０ｂと他の連結部材６０ａとは、ヒンジ部６０ｃにてｒ連結されていなくても良く、例えば、その部位が、上述した係合爪６１ａと係合孔６２ａとの係合状態により、連結されるような構成を採用しても良い。 [Another embodiment]
(1) In the above-described embodiment, an example in which one connecting member 60b and another connecting member 60a are connected by a hinge portion 60c and configured as an integral type has been described.
However, the one connecting member 60b and the other connecting member 60a do not have to be r-connected by the hinge portion 60c. For example, the portion of the connecting member 60b is engaged with the engaging claw 61a and the engaging hole 62a. Depending on the combined state, a configuration of being connected may be adopted.

本発明の誤接続防止装置及びその使用方法は、プラグに本願にいう誤接続防止装置を装着しておくことにより、誤接続状態の発生を防止しながらも、正常接続状態を円滑に実現できる誤接続防止装置及びその使用方法を提供する装置及び使用方法として、有効に利用可能である。   The erroneous connection prevention device and the method of using the same according to the present invention is an error in which a normal connection state can be smoothly realized while preventing the occurrence of an erroneous connection state by attaching the erroneous connection prevention device described herein to the plug. The present invention can be effectively used as a device and a method of using a connection prevention device and a method of using the same.

２０ ：継手部材
４８ ：接続部
４９ａ ：プラグ基端側部位
４９ｂ ：突出部
５０ ：筒状部材
６０ａ ：連結部材
６０ｂ ：連結部材
６０ｃ ：ヒンジ部
６０ｅ ：連結部材本体
６１ ：係合部
６１ａ ：係合爪
６２ ：被係合部
６２ａ ：係合孔
６２ｂ ：係合解除用弾性変形部
７１ ：円弧状嵌合部
８０ ：ホース
８１ ：対向傾斜部
８２ ：膨出部
８３ ：環状部位
８３ａ ：切欠溝
８５ ：隔離壁
８６ ：係合解除部
８７ ：受入部
１００ ：誤接続防止装置
２００ ：ガス機器 20: Joint member 48: Connection portion 49a: Plug proximal end portion 49b: Projection portion 50: Cylindrical member 60a: Connection member 60b: Connection member 60c: Hinge portion 60e: Connection member body 61: Engagement portion 61a: Engagement Claw 62: engaged portion 62a: engagement hole 62b: disengagement elastic deformation portion 71: arc-shaped fitting portion 80: hose 81: opposed inclined portion 82: bulging portion 83: annular portion 83a: notch groove 85 : Separation wall 86: Disengagement part 87: Receiving part 100: Misconnection prevention device 200: Gas equipment

Claims (10)

プラグの接続部に、ホースの一端に設けられる継手部材を接続する接続構造に使用する誤接続防止装置であって、
前記プラグの接続部に装着可能であると共に、一対の連結部材を連結して構成される筒状部材が設けられ、
一対の前記連結部材のうち、一の前記連結部材には係合部が設けられると共に、他の前記連結部材には前記係合部に係合する被係合部が設けられ、
前記被係合部を備えた前記連結部材は、連結部材本体と、当該連結部材本体と一部で一体化され、他部が当該連結部材本体に対して揺動自在に構成される係合解除用弾性変形部とを有して構成され、
前記筒状部材の前記プラグの接続部への装着状態において、前記係合解除用弾性変形部に、前記筒状部材の内径側へ突出するとともに、前記継手部材の挿入に伴う前記継手部材の当接により外径側へ揺動して、前記係合部と前記被係合部との係合を解除する係合解除部が設けられ、
前記装着状態において、前記筒状部材の内周面のうち、少なくとも前記係合解除部に対向する部位に、筒状部材先端側から筒状部材基端側へ向かうに従って内径側への突出量が増加する対向傾斜部が設けられ、
プラグ軸方向で筒状部材先端側から筒状部材基端側への前記継手部材の挿入に伴って、前記対向傾斜部にて前記継手部材が前記係合解除部の側へ移動し、前記係合解除部に前記継手部材が当接して前記係合解除用弾性変形部が揺動変形し、前記係合部と前記被係合部との係合が解除される誤接続防止装置。 A misconnection prevention device used in a connection structure for connecting a joint member provided at one end of a hose to a connection portion of a plug,
A cylindrical member that is attachable to the connecting portion of the plug and is configured by connecting a pair of connecting members is provided,
Of the pair of connecting members, one of the connecting members is provided with an engaging portion, and the other connecting member is provided with an engaged portion that engages with the engaging portion.
The connection member provided with the engaged portion is integrated with a connection member main body and a part of the connection member main body, and the other part is configured to be swingable with respect to the connection member main body. An elastic deformation part for
In a state where the tubular member is attached to the connection portion of the plug, the elastic member for releasing engagement projects toward the inner diameter side of the tubular member, and the joint member comes into contact with insertion of the joint member. An engagement release portion is provided that swings to the outer diameter side by contact and releases the engagement between the engagement portion and the engaged portion,
In the mounted state, at least a portion of the inner peripheral surface of the cylindrical member facing the engagement release portion has a protruding amount toward the inner diameter side from the distal end side of the cylindrical member toward the proximal end side of the cylindrical member. Increasing opposing slopes are provided,
As the joint member is inserted from the tubular member distal end side to the tubular member proximal end side in the plug axial direction, the joint member moves to the engagement release portion side at the opposing inclined portion, and the engagement An erroneous connection preventing device in which the joint member is brought into contact with the mating release portion, the engagement-dissipating elastic deformation portion is rocked and deformed, and the engagement between the engagement portion and the engaged portion is released. 前記係合解除部は、筒状部材先端側から筒状部材基端側に向かうに従って内径側突出量が増加する傾斜面を備える請求項１に記載の誤接続防止装置。   2. The erroneous connection preventing apparatus according to claim 1, wherein the disengagement portion includes an inclined surface in which a protruding amount on the inner diameter side increases from the distal end side of the tubular member toward the proximal end side of the tubular member. 前記対向傾斜部は、当該対向傾斜部が設けられる前記連結部材の内周面全体に亘って設けられると共に、当該連結部材が、相手側の連結部材とともに前記筒状部材を形成している筒形成状態において、筒状部材先端側から筒状部材基端側へ向けて内径を減少させる請求項１又は２に記載の誤接続防止装置。   The opposed inclined portion is provided over the entire inner peripheral surface of the connecting member provided with the opposed inclined portion, and the connecting member forms the cylindrical member together with the mating connecting member. 3. The misconnection prevention device according to claim 1, wherein in the state, the inner diameter is decreased from the tubular member distal end side toward the tubular member proximal end side. 前記プラグの基端側に径方向外側へ突出する突出部を備えたプラグを装着対象とし、
前記筒状部材は、前記装着状態において、筒状部材基端側に、前記プラグの前記突出部が嵌り込む切欠溝を備え、前記突出部の前記切欠溝への嵌り込みにより前記筒状部材が前記プラグの軸心周りで位置決めされる請求項１〜３の何れか一項に記載の誤接続防止装置。 The plug is provided with a projecting portion projecting radially outward on the base end side of the plug,
The tubular member includes a cutout groove into which the protruding portion of the plug is fitted on the proximal end side of the tubular member in the mounted state, and the tubular member is inserted into the cutout groove by fitting the protruding portion into the cutout groove. The erroneous connection preventing device according to any one of claims 1 to 3, wherein the device is positioned around an axis of the plug. ガスが供給されるガス機器の壁面に備えられるプラグを装着対象とし、
前記筒状部材は、前記係合部及び前記被係合部を前記ガス機器の壁面側に位置させた状態で、前記プラグの軸心周りに位置決めされる請求項４に記載の誤接続防止装置。 For plugs on the wall of gas equipment to which gas is supplied,
The erroneous connection prevention device according to claim 4, wherein the tubular member is positioned around the axial center of the plug in a state where the engaging portion and the engaged portion are positioned on the wall surface side of the gas device. . 前記係合部が係合爪として、前記被係合部が係合孔として構成され、
前記係合解除用弾性変形部は、前記連結部材本体の前記一部側に、前記係合解除部を備えるとともに、前記他部側に、前記係合孔を備えている請求項１〜５の何れか一項に記載の誤接続防止装置。 The engaging portion is configured as an engaging claw, and the engaged portion is configured as an engaging hole.
The engagement disengagement elastic deformation portion includes the engagement release portion on the partial side of the connecting member main body and the engagement hole on the other portion side. The erroneous connection prevention device according to any one of the above. 前記一の連結部材に設けられる前記係合解除用弾性変形部の他部側端部は、前記一部側から前記他部側へ向けて膨出する膨出部を備え、
前記他の連結部材は、前記係合部と前記被係合部との係合状態において、前記膨出部を受け入れる受入部を備え、
前記受入部及び前記膨出部は、前記受入部が前記膨出部を受け入れる受け入れ状態において、前記係合解除用弾性変形部の弾性変形を抑制する弾性変形抑制機構として働く請求項１〜６の何れか一項に記載の誤接続防止装置。 The other side end of the disengagement elastic deformation part provided in the one connecting member includes a bulging part that bulges from the part side toward the other part side,
The other connecting member includes a receiving portion that receives the bulging portion in an engaged state between the engaging portion and the engaged portion,
The said receiving part and the said bulging part work as an elastic deformation | transformation suppression mechanism which suppresses the elastic deformation of the said elastic deformation part for a disengagement in the acceptance state in which the said receiving part receives the said bulging part. The erroneous connection prevention device according to any one of the above. 前記筒状部材の前記プラグの接続部への装着状態で、前記筒状部材の筒状部材先端側からの断面視において、
前記係合解除部の前記プラグの軸方向での筒状部材基端側部位と、それに対向する前記対向傾斜部の前記プラグの軸方向での筒状部材基端側部位との距離が、端部に継手部材を設けることなく使用されるホースの外径より大きく、前記継手部材の外径より小さく構成されている請求項１〜７の何れか一項に記載の誤接続防止装置。 In the mounting state of the tubular member to the plug connecting portion, in a cross-sectional view from the distal end side of the tubular member of the tubular member,
The distance between the tubular member proximal end portion in the axial direction of the plug of the disengagement portion and the tubular member proximal end portion in the axial direction of the plug of the opposed inclined portion opposed thereto is an end. The misconnection prevention device according to any one of claims 1 to 7, wherein the device is configured to be larger than an outer diameter of a hose used without providing a joint member at a portion and smaller than an outer diameter of the joint member. 前記筒状部材を構成する一対の連結部材は、一体成型されている請求項１〜８の何れか一項に記載の誤接続防止装置。   The misconnection prevention device according to any one of claims 1 to 8, wherein the pair of connecting members constituting the cylindrical member are integrally molded. 請求項１〜９の何れか一項に記載の誤接続防止装置の使用方法であって、
前記誤接続防止装置が、前記プラグが設けられるガス機器の出荷時に前記プラグの接続部に取り付けられる使用方法。 A method of using the erroneous connection prevention device according to any one of claims 1 to 9,
The use method in which the erroneous connection prevention device is attached to a connection portion of the plug at the time of shipment of a gas device provided with the plug.
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