JP5779082B2 - Fitting - Google Patents

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JP5779082B2
JP5779082B2 JP2011274582A JP2011274582A JP5779082B2 JP 5779082 B2 JP5779082 B2 JP 5779082B2 JP 2011274582 A JP2011274582 A JP 2011274582A JP 2011274582 A JP2011274582 A JP 2011274582A JP 5779082 B2 JP5779082 B2 JP 5779082B2
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release
concave insertion
insertion portion
tube
joint
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JP2013124731A (en
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山口　隆弘
隆弘 山口
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Bridgestone Corp
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Description

本発明は継手に関し、詳しくは、チューブと配管との接続に用いられる継手の改良に関する。   The present invention relates to a joint, and more particularly, to an improvement in a joint used for connecting a tube and piping.

従来、ビール等の液体輸送用ホースと配管とを接続するための継手としては、ホースを継手の一方の端部内に押圧挿入することにより接続が完了する、いわゆるワンタッチ継手と呼ばれるものが汎用されている。このようなワンタッチ継手におけるホースと継手との分離は、継手に組み込まれた、接続を解除するための部材をその軸方向に押し込むことで、ホースと、ホースを係止する係止部材との係合を解除することにより、行われる。   Conventionally, as a joint for connecting a liquid transport hose such as beer and a pipe, a so-called one-touch joint, which is completed by pressing and inserting the hose into one end of the joint, is widely used. Yes. In such a one-touch joint, the hose and the joint are separated from each other by pushing the member for releasing the connection incorporated in the joint in the axial direction, so that the hose and the locking member for locking the hose are engaged. This is done by releasing the match.

かかるワンタッチ継手としては、例えば、特許文献１，２に記載されているようなものが知られている。これら特許文献１，２に開示されている継手は、一方の配管に接続されるノーズと、他方の配管に接続され、ノーズが挿入される凹状挿入部を有するボディーとを備え、ノーズ及びボディーに流体が流れる流路部が形成された継手であって、凹状挿入部に設けられた樹脂製のロック部材と、ボディー本体の外周側にロック位置とロック解除位置との間を周方向に回動可能に設けられた解除部材と、ボディー本体の外周面に形成された突起部と、解除部材に設けられ、ロック解除位置で突起部と係合する凹部と、を有している。   As such one-touch joints, for example, those described in Patent Documents 1 and 2 are known. These joints disclosed in Patent Documents 1 and 2 include a nose connected to one pipe and a body having a concave insertion portion connected to the other pipe and into which the nose is inserted. A joint formed with a flow path through which fluid flows, and rotates in the circumferential direction between a resin lock member provided in the concave insertion portion and a lock position and a lock release position on the outer peripheral side of the body body The release member is provided, a projection formed on the outer peripheral surface of the body body, and a recess provided on the release member and engaged with the projection at the unlocking position.

また、特許文献３には、チューブが挿入され、チャック部材にて鋏止された後、チャック開放部材が管端内に圧入されるのを防止するチューブ抜け防止機構を有し、チューブ抜け防止機構にてチャック部材を開かないようにしてチューブが管端から抜けるのを防止するようにした、ワンタッチチューブ継手におけるチューブ抜け防止機構が開示されている。   Patent Document 3 has a tube removal prevention mechanism that prevents the chuck release member from being press-fitted into the tube end after the tube is inserted and clamped by the chuck member. Discloses a tube removal prevention mechanism in a one-touch tube joint that prevents the chuck member from being opened and prevents the tube from coming off the tube end.

特開２００９−１４１６５号公報（特許請求の範囲等）JP 2009-14165 A (Claims etc.) 特開２００９−１４１６６号公報（特許請求の範囲等）JP 2009-14166 A (Claims etc.) 特開平９−４２５６２号公報（特許請求の範囲等）JP-A-9-42562 (Claims etc.)

上記特許文献１，２に開示されているような継手においては、解除部材を、ロック解除位置まで回動させて、継手の凹状挿入部内に押し込むことで、配管と継手との係合を解除して、配管と継手とを分離することが可能である。しかしながら、かかる継手構造をチューブの接続に適用した場合、解除部材が継手に組み込まれているために、使用時にチューブに対し曲げや捻り、引張りなどの予期しない外力が加えられることにより、解除部材がロック解除位置まで回動してしまい、意図せずに配管と継手とが分離されてしまうおそれがあった。これに対し、特許文献３に記載されているようなチューブ抜け防止技術もあるが、この技術ではスペーサ部材を別途必要とするので、部品数が多くなって、コスト高となるという別の問題を有していた。   In joints such as those disclosed in Patent Documents 1 and 2, the release member is rotated to the unlock position and pushed into the concave insertion portion of the joint to release the engagement between the pipe and the joint. Thus, the pipe and the joint can be separated. However, when such a joint structure is applied to the connection of the tube, the release member is incorporated into the joint, so that an unexpected external force such as bending, twisting or pulling is applied to the tube during use. There is a possibility that the pipe and the joint may be unintentionally separated due to the rotation to the unlocking position. On the other hand, there is a tube removal prevention technique as described in Patent Document 3, but this technique requires a separate spacer member, which increases the number of parts and increases the cost. Had.

そこで本発明の目的は、上記問題を解消して、チューブと配管との接続に用いられるワンタッチ継手において、意図しないチューブと継手との分離を防止するための技術を提供することにある。   Therefore, an object of the present invention is to solve the above-described problems and provide a technique for preventing unintentional separation between the tube and the joint in the one-touch joint used for connecting the tube and the pipe.

本発明者は鋭意検討した結果、チューブと継手とを分離するための解除機構を改良して、ロック解除位置までの不用意な回動を防止するためのばね部を設けることで、上記問題が解消できることを見出して、本発明を完成するに至った。   As a result of intensive studies, the present inventor improved the release mechanism for separating the tube and the joint, and provided a spring portion for preventing inadvertent rotation to the lock release position. The inventors have found that the problem can be solved, and have completed the present invention.

すなわち、本発明の継手は、一方の端部に、チューブが挿入される凹状挿入部を有するとともに、他方の端部に、配管に接続される接続部を有する継手本体を備え、
前記凹状挿入部内に挿嵌され、挿入された前記チューブを係止する係止部材と、
一方の端部が前記凹状挿入部から突出するとともに他方の端部が該凹状挿入部内に挿嵌され、該凹状挿入部の端部に周方向に設けられたロック位置と解除位置との間を回動自在に形成されて、該解除位置で該凹状挿入部内に押込まれることで、押込まれた先端部により前記係止部材を押圧して、前記チューブの係止状態を解除する解除部材と、を有する継手であって、
前記凹状挿入部の入口側端部の内周に、前記ロック位置から前記解除位置まで切欠き部を有し、前記解除部材の突出側端部近傍の外周に、該切欠き部に係合可能な突起部を有し、
前記突起部の解除位置側にばね部が固設されるとともに、前記切欠き部が、前記解除位置において、該突起部および収縮させた該ばね部を挿嵌可能な深溝部を有することを特徴とするものである。 That is, the joint of the present invention includes a joint body having a concave insertion portion into which a tube is inserted at one end and a connection portion connected to a pipe at the other end.
A locking member that is fitted into the concave insertion portion and locks the inserted tube;
One end protrudes from the concave insertion portion and the other end is inserted into the concave insertion portion. Between the locking position and the release position provided in the circumferential direction at the end of the concave insertion portion. A release member that is formed to be rotatable and is pushed into the concave insertion portion at the release position so as to press the locking member by the pushed-in tip portion and release the locking state of the tube; A joint having,
There is a notch on the inner periphery of the inlet side end of the concave insertion portion from the lock position to the release position, and it can be engaged with the notch on the outer periphery in the vicinity of the protruding end of the release member Have a protruding part,
A spring portion is fixed on the release position side of the protrusion, and the notch has a deep groove portion into which the protrusion and the contracted spring portion can be inserted at the release position. It is what.

本発明の他の継手は、一方の端部に、チューブが挿入される凹状挿入部を有するとともに、他方の端部に、配管に接続される接続部を有する継手本体を備え、
前記凹状挿入部内に挿嵌され、挿入された前記チューブを係止する係止部材と、
一方の端部が前記凹状挿入部から突出するとともに他方の端部が該凹状挿入部内に挿嵌され、該凹状挿入部の端部に周方向に設けられたロック位置と解除位置との間を回動自在に形成されて、該解除位置で該凹状挿入部内に押込まれることで、押込まれた先端部により前記係止部材を押圧して、前記チューブの係止状態を解除する解除部材と、を有する継手であって、
前記凹状挿入部の入口側端部の内周に、前記ロック位置から前記解除位置まで切欠き部を有し、前記解除部材の突出側端部近傍の外周に、該切欠き部に係合可能な突起部を有し、
前記切欠き部の解除位置側壁面にばね部が固設されるとともに、該切欠き部が、前記解除位置において、該ばね部を収縮させた状態で前記突起部を挿嵌可能な深溝部を有することを特徴とするものである。 The other joint of the present invention includes a joint body having a concave insertion portion into which the tube is inserted at one end and a connection portion connected to the pipe at the other end.
A locking member that is fitted into the concave insertion portion and locks the inserted tube;
One end protrudes from the concave insertion portion and the other end is inserted into the concave insertion portion. Between the locking position and the release position provided in the circumferential direction at the end of the concave insertion portion. A release member that is formed to be rotatable and is pushed into the concave insertion portion at the release position so as to press the locking member by the pushed-in tip portion and release the locking state of the tube; A joint having,
There is a notch on the inner periphery of the inlet side end of the concave insertion portion from the lock position to the release position, and it can be engaged with the notch on the outer periphery in the vicinity of the protruding end of the release member Have a protruding part,
A spring portion is fixed on the side wall surface of the release position of the notch, and the notch has a deep groove portion into which the protrusion can be inserted in the state where the spring portion is contracted at the release position. It is characterized by having.

本発明の継手において、前記ばね部は断面Ｎ字状の板ばねとすることができる。また、前記ばね部は、ゴム材料、樹脂材料または金属材料よりなるものとすることができる。さらに、前記チューブは、好適には液体輸送用ホースである。   In the joint according to the present invention, the spring portion may be a leaf spring having an N-shaped cross section. The spring portion may be made of a rubber material, a resin material, or a metal material. Furthermore, the tube is preferably a liquid transport hose.

本発明の継手においては、解除部材における突起部の解除位置側面または切欠き部の解除位置側壁面にばね部を設けたことで、解除部材を解除位置まで回動する際にはこのばね部を意図的に収縮させることが必要となるので、不用意なチューブと継手との分離を防止することができる。これにより、装着および分離の簡便性と、不用意に分離を生じないという安全性とを両立させた継手とすることが可能となった。   In the joint according to the present invention, when the release member is rotated to the release position, the spring portion is provided on the release position side surface of the protrusion or the release position side wall surface of the notch in the release member. Since it is necessary to intentionally contract, it is possible to prevent inadvertent separation between the tube and the joint. As a result, it has become possible to provide a joint that has both the ease of mounting and separation and the safety of preventing inadvertent separation.

本発明の一実施形態に係る継手の組立状態を示す半断面図である。It is a half sectional view showing the assembly state of the joint concerning one embodiment of the present invention. 図１の継手の分解状態を示す半断面図である。FIG. 2 is a half sectional view showing an exploded state of the joint of FIG. 1. 図１中のＡ−Ａ線に沿う継手の断面図である。It is sectional drawing of the coupling in alignment with the AA line in FIG. （ａ），（ｂ）はそれぞれ図３中のＢ−Ｂ線およびＣ−Ｃ線に沿う継手の部分断面図である。(A), (b) is a fragmentary sectional view of the joint which follows the BB line and CC line in FIG. 3, respectively. 図３に示すロック状態から解除部材を回動させていく途中の状態（ａ）、および、解除位置まで回動させた状態（ｂ）をそれぞれ示す継手の断面図である。It is sectional drawing of the joint which shows the state (a) in the middle of rotating the cancellation | release member from the locked state shown in FIG. 3, and the state (b) rotated to the cancellation | release position, respectively. 図５（ｂ）中のＤ−Ｄ線に沿う、継手の、解除部材を押込む前の状態（ａ）および押込んだ後の状態（ｂ）を示す部分断面図である。It is a fragmentary sectional view which shows the state (a) before pushing in the cancellation | release member of the joint along the DD line in FIG.5 (b), and the state (b) after pushing in. （ａ），（ｂ）は、解除部材の一例を示す斜視図である。(A), (b) is a perspective view which shows an example of a cancellation | release member.

以下、本発明の実施の形態について、詳細に説明する。
図１は、本発明の一実施形態に係る継手の組立状態（ロック状態）を示す半断面図であり、図２は、この継手の分解状態を示す半断面図である。図３は、図１中のＡ−Ａ線に沿う継手の断面図であり、図４（ａ），（ｂ）は、それぞれ図３中のＢ−Ｂ線およびＣ−Ｃ線に沿う継手の部分断面図であり、これらはいずれもロック状態を示す。また、図５は、図３に示すロック状態から解除部材を回動させていく途中の状態（ａ）、および、解除位置まで回動させた状態（ｂ）をそれぞれ示す継手の断面図である。さらに、図６は、図５（ｂ）中のＤ−Ｄ線に沿う継手の、解除部材を押込む前の状態（ａ）および押込んだ後の状態（ｂ）を示す部分断面図である。さらにまた、図７は、解除部材の一例を示す斜視図である。なお、図１ではチューブを示していないが、図３〜図６においては、説明の便宜上、継手にチューブ１００が接続された状態を示す。 Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a half sectional view showing an assembled state (locked state) of a joint according to an embodiment of the present invention, and FIG. 2 is a half sectional view showing an exploded state of the joint. 3 is a cross-sectional view of the joint taken along line AA in FIG. 1. FIGS. 4A and 4B are views of the joint taken along line BB and CC in FIG. 3, respectively. It is a fragmentary sectional view and these all show a locked state. FIG. 5 is a cross-sectional view of the joint showing a state (a) in the middle of rotating the release member from the locked state shown in FIG. 3 and a state (b) rotated to the release position, respectively. . Further, FIG. 6 is a partial cross-sectional view showing a state (a) before the release member is pushed in and a state (b) after the push-in of the joint along the line DD in FIG. 5 (b). . FIG. 7 is a perspective view showing an example of the release member. In addition, although the tube is not shown in FIG. 1, in FIGS. 3 to 6, for convenience of explanation, a state in which the tube 100 is connected to the joint is shown.

図示する継手１０は、雄型部材１１と、雌型部材１２とで構成される継手本体を備えており、例えば、チューブ１００としての液体輸送用ホースを介して、ビール等の液体を所定の圧力（例えば、約０．４ＭＰａ）で輸送する用途に用いられる。   The joint 10 shown in the figure includes a joint body composed of a male member 11 and a female member 12. For example, a liquid such as beer is given a predetermined pressure via a liquid transport hose as the tube 100. (For example, about 0.4 MPa) used for transportation.

雄型部材１１は、一方の端部に、チューブ１００の外径よりも大きな内径を有し、チューブ１００が挿入される凹状挿入部１３を有している。また、凹状挿入部１３の入口側端部の内周には、後述する解除部材１８と係合する２箇所の切欠き部１４が形成されており、凹状挿入部１３の内方端側には、チューブを保持するための保持部１５が設けられている。   The male member 11 has a concave insertion portion 13 into which one end portion has an inner diameter larger than the outer diameter of the tube 100 and into which the tube 100 is inserted. In addition, two notches 14 are formed on the inner periphery of the inlet side end of the concave insertion portion 13 to be engaged with a release member 18 to be described later, and on the inner end side of the concave insertion portion 13. A holding portion 15 for holding the tube is provided.

雄型部材１１の凹状挿入部１３内には、挿入されたチューブを係止するための係止部材１６が挿嵌されている。係止部材１６の軸方向外側には、係止部材１６を凹状挿入部１３内で軸方向に移動可能に保持する筒状の保持部材１７が配置されている。保持部材１７の外周には、径方向に突出する凸部１７Ａが形成されており、保持部材１７が雄型部材１１の凹状挿入部１３内に圧入され、凸部１７Ａが凹状挿入部１３の内周に形成された凹部１３Ａに係合されることで、保持部材１７は凹状挿入部１３内で保持されている。ここで、保持部材１７は、凹部１３Ａの軸方向長さと凸部１７Ａの軸方向長さの差分だけ、凹状挿入部１３内で軸方向に移動可能であり、係止部材１６も同様に、凹部１３Ａの軸方向長さと凸部１７Ａの軸方向長さの差分だけ、凹状挿入部１３内で軸方向に移動可能となる。また、係止部材１６および保持部材１７は、いずれも外径が凹状挿入部１３の内径よりも小さく形成されており、凹状挿入部１３内で回動自在となっている。   A locking member 16 for locking the inserted tube is inserted into the concave insertion portion 13 of the male member 11. A cylindrical holding member 17 that holds the locking member 16 so as to be movable in the axial direction within the concave insertion portion 13 is disposed outside the locking member 16 in the axial direction. A convex portion 17A protruding in the radial direction is formed on the outer periphery of the holding member 17, the holding member 17 is press-fitted into the concave insertion portion 13 of the male member 11, and the convex portion 17A is inside the concave insertion portion 13. The holding member 17 is held in the concave insertion portion 13 by being engaged with the concave portion 13 </ b> A formed on the periphery. Here, the holding member 17 is movable in the axial direction within the concave insertion portion 13 by a difference between the axial length of the concave portion 13A and the axial length of the convex portion 17A, and the locking member 16 is similarly concave. Only the difference between the axial length of 13A and the axial length of the convex portion 17A can move in the concave insertion portion 13 in the axial direction. Further, the locking member 16 and the holding member 17 are both formed so that the outer diameter is smaller than the inner diameter of the concave insertion portion 13, and can rotate within the concave insertion portion 13.

係止部材１６は、図示するように、断面Ｖ字状の筒状体からなり、チューブ１００の外径よりもわずかに小さい内径を有し、一部に切欠き部を有することで、弾性変形により拡径可能に形成されている。係止部材１６は、内周側にチューブ１００が圧入されることで弾性変形により拡径し、内周縁部１６Ａにより弾性的にチューブ１００の外周を係止する。係止部材１６には、切込み部を適宜形成して、より拡径を容易にしてもよい。   As shown in the drawing, the locking member 16 is made of a cylindrical body having a V-shaped cross section, has an inner diameter slightly smaller than the outer diameter of the tube 100, and has a notch portion in part, thereby elastically deforming. Thus, the diameter can be increased. The locking member 16 expands in diameter by elastic deformation when the tube 100 is press-fitted to the inner peripheral side, and elastically locks the outer periphery of the tube 100 by the inner peripheral edge portion 16A. The locking member 16 may be appropriately formed with a cut portion to facilitate the diameter expansion.

保持部材１７の内周側には、チューブ１００を挿入可能な内径を有する略筒状の解除部材１８が、軸方向に移動可能に挿嵌されている。解除部材１８の軸方向内側端部側の外周には径方向に突出する突起１８Ａが形成されており、解除部材１８が保持部材１７内に圧入された状態で、解除部材１８が軸方向外側に移動したときに、突起１８Ａが保持部材１７の内周に設けられた突起１７Ｂに突き当たることにより、解除部材１８の抜け出しが防止されるようになっている。すなわち、解除部材１８は、保持部材１７により、一方の端部が凹状挿入部１３から突出するとともに、他方の端部が保持部材１７内に位置する状態で保持されている。   A substantially cylindrical release member 18 having an inner diameter into which the tube 100 can be inserted is inserted on the inner peripheral side of the holding member 17 so as to be movable in the axial direction. A protrusion 18A that protrudes in the radial direction is formed on the outer periphery of the release member 18 on the inner end side in the axial direction. With the release member 18 being press-fitted into the holding member 17, the release member 18 is moved outward in the axial direction. When moved, the protrusion 18 </ b> A hits the protrusion 17 </ b> B provided on the inner periphery of the holding member 17, thereby preventing the release member 18 from coming out. That is, the release member 18 is held by the holding member 17 in a state where one end protrudes from the concave insertion portion 13 and the other end is located in the holding member 17.

解除部材１８の凹状挿入部１３から突出する側の端部には、凹状挿入部１３の軸方向外側端部の内径よりも大きい外径を有するフランジ部１８Ｂが設けられている。また、フランジ部１８Ｂの軸方向内側における解除部材１８の外周には、切欠き部１４に係合可能な突起部１９が設けられている。突起部１９は、図示例では、周方向に約１８０°をなす位置に２個にて設けられているが、これには限られない。   A flange portion 18B having an outer diameter larger than the inner diameter of the axially outer end portion of the concave insertion portion 13 is provided at the end portion of the release member 18 that protrudes from the concave insertion portion 13. Further, a protrusion 19 that can be engaged with the notch 14 is provided on the outer periphery of the release member 18 on the inner side in the axial direction of the flange 18B. In the illustrated example, two protrusions 19 are provided at positions that form approximately 180 ° in the circumferential direction, but the present invention is not limited to this.

凹状挿入部１３の入り口側端部の内周に設けられた切欠き部１４は、突起部１９が移動するためのものであり、それぞれ周方向に周長の約１／４の長さで形成されている。解除部材１８は、突起部１９が切欠き部１４の一方の端部１４Ａおよび他方の端部１４Ｂに当接する間を、周方向に回動可能となっている。このとき、突起部１９が切欠き部１４の一方の端部１４Ａに当接する位置が、解除部材１８の軸方向内側への移動をロックするロック位置Ｘ（図４参照）であり、突起部１９が切欠き部１４の他方の端部１４Ｂに当接する位置が、解除部材１８の軸方向内側への移動を許容する解除位置Ｙ（図６参照）となっている。言い換えると、解除部材１８は、周方向に設けられたロック位置Ｘと解除位置Ｙとの間を回動自在に構成されている。   The notch 14 provided on the inner periphery of the entrance side end of the concave insertion portion 13 is for the projection 19 to move, and is formed with a length of about 1/4 of the circumference in the circumferential direction. Has been. The release member 18 is rotatable in the circumferential direction while the protrusion 19 is in contact with one end 14A and the other end 14B of the notch 14. At this time, the position where the protrusion 19 abuts against one end 14A of the notch 14 is a lock position X (see FIG. 4) that locks the movement of the release member 18 in the axial direction. Is a release position Y (see FIG. 6) that allows the release member 18 to move inward in the axial direction. In other words, the release member 18 is configured to be rotatable between a lock position X and a release position Y provided in the circumferential direction.

図３および図４に示すように、切欠き部１４は、ロック位置Ｘに対応する一方の端部１４Ａ側における軸方向深さの浅い浅溝部１４Ｃと、解除位置Ｙに対応する他方の端部１４Ｂにおける軸方向深さの深い深溝部１４Ｄとを有している。よって、解除部材１８を回動させて突起部１９を解除位置Ｙに位置させることで、突起部１９を深溝部１４Ｄに係合させて、解除部材１８を凹状挿入部３内に押込むことができるようになる（図６（ａ））。このとき、図６（ｂ）に示すように、解除部材１８を軸方向内側に押込むことで、解除部材１８の押込まれた先端部１８Ｃが、係止部材１６のＶ字状の内周側傾斜面１６Ｂを押圧するので、これにより係止部材１６は内周側から押し広げられて拡径し、チューブ１００の係止状態が解除される。   As shown in FIGS. 3 and 4, the notch portion 14 includes a shallow groove portion 14 </ b> C having a shallow axial depth on one end portion 14 </ b> A side corresponding to the lock position X, and the other end portion corresponding to the release position Y. 14B and a deep groove portion 14D having a deep axial direction depth. Therefore, by rotating the release member 18 to position the projection 19 at the release position Y, the projection 19 can be engaged with the deep groove portion 14D and the release member 18 can be pushed into the concave insertion portion 3. It will be possible (FIG. 6 (a)). At this time, as shown in FIG. 6 (b), by pushing the release member 18 inward in the axial direction, the distal end portion 18 </ b> C into which the release member 18 is pushed becomes the V-shaped inner peripheral side of the locking member 16. Since the inclined surface 16B is pressed, the locking member 16 is expanded from the inner peripheral side by this, and the diameter of the locking member 16 is increased, and the locking state of the tube 100 is released.

ここで、図３および図５に示すように、突起部１９の解除位置側面には、ばね部２０が固設されている。図示するように、突起部１９を解除位置Ｙに位置させるためには、ばね部２０を切欠き部１４の他方の端部１４Ｂに意図的に押し付けて、自然長よりも収縮させることが必要となるので（図５（ｂ）参照）、チューブと継手との不用意な分離を生ずるおそれがなくなる。図３および図７（ａ）に示す例では、ばね部２０は、断面Ｎ字状の板ばねにより構成されるが、これには限られず、図７（ｂ）に示すような湾曲した板ばねよりなるばね部５０を用いてもよい。また、ばね部２０は、ゴム材料、樹脂材料または金属材料のいずれよりなるものであってもよい。   Here, as shown in FIGS. 3 and 5, a spring portion 20 is fixedly provided on the side of the release position of the protruding portion 19. As shown in the figure, in order to position the protrusion 19 at the release position Y, it is necessary to intentionally press the spring portion 20 against the other end portion 14B of the notch portion 14 so as to contract more than the natural length. Therefore, there is no possibility of inadvertent separation between the tube and the joint. In the example shown in FIG. 3 and FIG. 7A, the spring portion 20 is constituted by a leaf spring having an N-shaped cross section, but is not limited thereto, and is a curved leaf spring as shown in FIG. You may use the spring part 50 which consists of. The spring portion 20 may be made of any of a rubber material, a resin material, or a metal material.

ここで、突起部１９にばね部２０が固設されていることから、図５（ｂ）に示すように、深溝部１４Ｄは、凸部および収縮させたばね部を挿嵌可能である必要があり、すなわち、深溝部１４Ｄの周方向における幅は、突起部１９および収縮させたばね部２０の周方向における総幅よりも大きく形成する。一方で、ばね部２０によるチューブと継手との不用意な分離の防止の効果を得る上では、深溝部１４Ｃの周方向における幅は、突起部１９および自然長のばね部２０の周方向における総幅よりも小さく形成することが必要である。より具体的には、深溝部１４Ｄは、突起部１９および収縮させたばね部２０がぎりぎり挿嵌できる程度の幅とすることが好ましい。   Here, since the spring portion 20 is fixed to the projection portion 19, the deep groove portion 14D needs to be able to insert the convex portion and the contracted spring portion as shown in FIG. 5B. That is, the width in the circumferential direction of the deep groove portion 14 </ b> D is formed larger than the total width in the circumferential direction of the protruding portion 19 and the contracted spring portion 20. On the other hand, in order to obtain an effect of preventing inadvertent separation between the tube and the joint by the spring portion 20, the width in the circumferential direction of the deep groove portion 14 </ b> C is the total in the circumferential direction of the protrusion portion 19 and the natural length spring portion 20. It is necessary to form it smaller than the width. More specifically, it is preferable that the deep groove portion 14 </ b> D has a width that allows the projection portion 19 and the contracted spring portion 20 to be tightly inserted.

切欠き部１４の浅溝部１４Ｃの軸方向深さは、解除部材１８の先端部１８Ｃが係止部材１６のＶ字状の内周側傾斜面１６Ａに接しない深さとなっている。一方、切欠き部１４の深溝部１４Ｄの軸方向深さは、解除部材１８の先端部１８Ｃが係止部材１６のＶ字状の内周側傾斜面１６Ａを押圧することができるものであればよい。また、図示する例では、浅溝部１４Ｃと深溝部１４Ｄとの間に、軸方向深さが徐々に変化する傾斜部１４Ｅが設けられており、解除部材１８をロック位置Ｘから解除位置Ｙに向かい回動させつつ、突起部１９を深溝部１４Ｄ内に滑らかに係合させることができるようになっているが、傾斜部１４Ｅを設けずに、浅溝部１４Ｃと深溝部１４Ｄとの間を階段状に形成してもよい。   The axial depth of the shallow groove portion 14 </ b> C of the notch portion 14 is a depth at which the distal end portion 18 </ b> C of the release member 18 does not contact the V-shaped inner peripheral inclined surface 16 </ b> A of the locking member 16. On the other hand, the axial depth of the deep groove portion 14D of the notch portion 14 can be any depth as long as the distal end portion 18C of the release member 18 can press the V-shaped inner peripheral inclined surface 16A of the locking member 16. Good. Further, in the illustrated example, an inclined portion 14E in which the axial depth gradually changes is provided between the shallow groove portion 14C and the deep groove portion 14D, and the release member 18 is moved from the lock position X to the release position Y. The projecting portion 19 can be smoothly engaged in the deep groove portion 14D while being rotated, but without providing the inclined portion 14E, a stepped shape is formed between the shallow groove portion 14C and the deep groove portion 14D. You may form in.

図３等に示すように、切欠き部１４は、ロック位置Ｘにおいて、解除位置Ｙよりも径方向の幅が小さくなっている。また、切欠き部１４のロック位置Ｘより解除位置側の外周面には、径方向内側に突出する凸部１４Ｆが設けられている。この切欠き部１４の凸部１４Ｆは、解除部材１８をロック状態から解除状態方向に回動させ始めるときに、突起部１９と互いに突き当たる位置に形成されている。すなわち、解除部材１８をロック位置から移動させる際には、突起部１９が凸部１４Ｆを乗り越える必要があるので、これにより、解除部材１８のロック状態の解除が規制されるようになっている。   As shown in FIG. 3 and the like, the notch 14 has a smaller radial width at the lock position X than at the release position Y. Further, a convex portion 14F that protrudes radially inward is provided on the outer peripheral surface of the notch portion 14 on the release position side of the lock position X. The convex portion 14F of the notch portion 14 is formed at a position where it abuts against the protrusion 19 when the release member 18 starts to rotate from the locked state to the released state. That is, when the release member 18 is moved from the lock position, the projection 19 needs to get over the convex portion 14F, and thus, the release of the release member 18 in the locked state is restricted.

凹状挿入部１３内の係止部材１６の軸方向内側には、凹状挿入部１３内で係止部材１６を安定的に保持するためのリング状部材２０が配置されている。リング状部材２０の軸方向内側における保持部１５の軸方向外側端部には、内径の大きい段差部１５Ａが設けられており、この段差部１５Ａには、シール性を確保するためのＯリング２２が嵌め込まれている。   A ring-shaped member 20 for stably holding the locking member 16 in the concave insertion portion 13 is disposed on the axially inner side of the locking member 16 in the concave insertion portion 13. A step portion 15A having a large inner diameter is provided at an axially outer end portion of the holding portion 15 on the inner side in the axial direction of the ring-shaped member 20, and an O-ring 22 for ensuring a sealing property is provided in the step portion 15A. Is inserted.

雄型部材１１は、図示例ではＬ字状に形成され、雌型部材１２に対し接続される他方の端部に、係止部２３を有している。一方、雌型部材１２は、略筒状であり、一方の端部に雄型部材１１の係止部２３が挿入される挿入口２４を有するとともに、他方の端部に、図示しない配管と接続される接続部２５を有している。また、雄型部材１１の芯部には、チューブ１００が挿入される一方の端部側から雌型部材１２に接続される他方の端部側まで連通し、液体が流れる流路３０が形成されており、雌型部材１２の芯部にも、雄型部材１１の流路３０と連通する流路４０が形成されている。   The male member 11 is formed in an L shape in the illustrated example, and has a locking portion 23 at the other end connected to the female member 12. On the other hand, the female member 12 has a substantially cylindrical shape, and has an insertion port 24 into which the locking portion 23 of the male member 11 is inserted at one end, and is connected to a pipe (not shown) at the other end. The connecting portion 25 is provided. Further, a flow path 30 through which a liquid flows is formed in the core portion of the male member 11 from the one end side where the tube 100 is inserted to the other end side connected to the female member 12. The flow path 40 communicating with the flow path 30 of the male mold member 11 is also formed in the core portion of the female mold member 12.

雄型部材１１の係止部２３の外周には、雌型部材１２の挿入口２４の内周に設けられた凹部２４Ａと係合する凸部２３Ａが、径方向に突出して形成されている。雄型部材１１の係止部２３を雌型部材１２の挿入口２４内に圧入して、雄型部材１１の凸部２３Ａが雌型部材１２の凹部２４Ａに係合されることで、雄型部材１１と雌型部材１２とは、互いに回動可能に係止される。また、雄型部材１１の係止部２３の外周には、溝部２３Ｂが設けられ、この溝部２３Ｂ内には、シール性を確保するためのＯリング２６が嵌め込まれている。一方、雌型部材１２の挿入口２４内に位置する雄型部材１１の係止部２３の端部２３Ｃの外周と雌型部材１２の内周面との間にも、シール性を確保するためのＯリング２７が嵌め込まれている。一方、雌型部材１２の接続部２５の内周には、ねじ部２５Ａが形成されており、このねじ部２５Ａに図示しない配管のねじ部が螺合されて、継手１０と配管とが接続される。   On the outer periphery of the locking portion 23 of the male member 11, a convex portion 23 </ b> A that engages with the concave portion 24 </ b> A provided on the inner periphery of the insertion port 24 of the female member 12 is formed protruding in the radial direction. The male member 11 is press-fitted into the insertion port 24 of the female member 12 and the convex portion 23A of the male member 11 is engaged with the concave portion 24A of the female member 12, so that the male The member 11 and the female mold member 12 are engaged with each other so as to be rotatable. Further, a groove portion 23B is provided on the outer periphery of the locking portion 23 of the male member 11, and an O-ring 26 for securing a sealing property is fitted into the groove portion 23B. On the other hand, in order to ensure sealing performance between the outer periphery of the end 23C of the locking portion 23 of the male member 11 and the inner peripheral surface of the female member 12 located in the insertion port 24 of the female member 12. The O-ring 27 is fitted. On the other hand, a threaded portion 25A is formed on the inner periphery of the connecting portion 25 of the female member 12, and a threaded portion of a pipe (not shown) is screwed into the threaded portion 25A to connect the joint 10 and the pipe. The

本実施形態においては、継手本体が雄型部材１１と雌型部材１２とからなる場合について説明したが、継手本体は、一方の端部に、チューブが挿入される凹状挿入部を有するとともに、他方の端部に、配管に接続される接続部を有するものであれば、これには限られず、例えば、一部材からなるものであってもよい。   In the present embodiment, the case where the joint body is composed of the male member 11 and the female member 12 has been described. However, the joint body has a concave insertion portion into which the tube is inserted at one end, and the other. If it has a connection part connected to piping at the edge part of this, it will not be restricted to this, For example, it may consist of one member.

次に、本発明の継手１０の作用について説明する。
図４に示すように、チューブ１００を解除部材１８を通して雄型部材１１の凹状挿入部１３内に挿入すると、内周側に圧入された係止部材１６が弾性的に拡径して、その内周縁部１６Ａがチューブ１００を弾性的に係止する。この状態で、解除部材１８の突起部１９をロック位置Ｘまで回動させることで、チューブ１００は凹状挿入部１３にロックされる（図３参照）。なお、継手１０においては、解除部材１８がロック位置Ｘにあっても解除位置Ｙにあっても、雄型部材１１の凹状挿入部１３内にチューブ１００を挿入することができる。 Next, the operation of the joint 10 of the present invention will be described.
As shown in FIG. 4, when the tube 100 is inserted into the concave insertion portion 13 of the male member 11 through the release member 18, the locking member 16 press-fitted into the inner peripheral side is elastically expanded in diameter, The peripheral portion 16A elastically locks the tube 100. In this state, the tube 100 is locked to the concave insertion portion 13 by rotating the projection 19 of the release member 18 to the lock position X (see FIG. 3). In the joint 10, the tube 100 can be inserted into the concave insertion portion 13 of the male member 11 regardless of whether the release member 18 is in the lock position X or the release position Y.

解除部材１８の突起部１９がロック位置Ｘにある状態でチューブ１００に対し引抜き方向に力を加えても、チューブ１００の外周に弾性的に固定されている係止部材１６が、保持部材１７の軸方向内側の内周に形成された傾斜部１７Ｃに当たってチューブ１００の外周をより強固に固定するので、チューブ１００を凹状挿入部１３から引き抜くことができない。また、この状態で継手１０内の流路３０，４０に流体が流れると、継手１０に内圧が作用し、チューブ１００が引抜き方向の力を受けて軸方向外側に若干移動するので、結果として、チューブ１００の把持力が大きくなる。   Even when a force is applied to the tube 100 in the pulling direction with the protruding portion 19 of the release member 18 in the lock position X, the locking member 16 elastically fixed to the outer periphery of the tube 100 remains on the holding member 17. Since the outer periphery of the tube 100 is more firmly fixed by hitting the inclined portion 17 </ b> C formed on the inner periphery on the inner side in the axial direction, the tube 100 cannot be pulled out from the concave insertion portion 13. In addition, when a fluid flows in the flow passages 30 and 40 in the joint 10 in this state, an internal pressure acts on the joint 10 and the tube 100 receives a force in the pulling direction and moves slightly outward in the axial direction. The gripping force of the tube 100 is increased.

ロック位置Ｘでは、解除部材１８の突起部１９が雄型部材１１の切欠き部１４の一方の端部１４Ａに当接しており、突起部１９よりも解除位置側の切欠き部１４の外周面には、凸部１４Ｆが形成されている。この状態では、解除部材１８をロック位置Ｘから解除位置Ｙ方向に回動させようとしても、突起部１９が凸部１４Ｆに突き当たるので、解除部材１８の回動が規制される。よって、解除部材１８の突起部１９を解除位置Ｙまで回動させるためには、突起部１９が凸部１４Ｆを乗り越えることが必要であり、すなわち、解除部材１８に対し突起部１９が凸部１４Ｆを乗り越えるだけの力を加えなければ、解除部材１８をロック状態から移動させることができない。これにより、継手１０の使用時に、不用意に解除部材１８がロック位置Ｘから回動することを、抑制または防止できる。   At the lock position X, the protrusion 19 of the release member 18 is in contact with one end 14A of the notch 14 of the male member 11, and the outer peripheral surface of the notch 14 on the release position side of the protrusion 19 is. Is formed with a convex portion 14F. In this state, even if the release member 18 is to be rotated from the lock position X to the release position Y direction, the protrusion 19 abuts against the convex portion 14F, and thus the rotation of the release member 18 is restricted. Therefore, in order to rotate the protrusion 19 of the release member 18 to the release position Y, it is necessary for the protrusion 19 to get over the protrusion 14F, that is, the protrusion 19 is protruded from the release member 18 by the protrusion 14F. The release member 18 cannot be moved from the locked state unless a force sufficient to overcome the above is applied. Thereby, it is possible to suppress or prevent the release member 18 from being inadvertently rotated from the lock position X when the joint 10 is used.

一方、チューブ１００を雄型部材１１から離脱させる際には、解除部材１８をロック位置Ｘから解除位置Ｙまで回動させる。まず、解除部材１８に対し一定の力を加えることで、弾性変形により突起部１９が凸部１４Ｆを乗り越える。さらに、解除部材１８を浅溝部１４Ｃから傾斜部１４Ｅを介して深溝部１４Ｄまで回動させる。この際、突起部１９の解除位置側面にはばね部２０が固設されているので、突起部１９とともにばね部２０を切欠き部１４の他方の端部１４Ｂに意図的に押し付けて、ばね部２０を自然長よりも収縮させなければ、突起部１９を解除位置Ｙまで回動させることができない。これにより、継手１０の使用時に、たとえ解除部材１８がロック位置Ｘから回動してしまった場合であっても、解除位置Ｙまで回動することについては、抑制または防止することができる。   On the other hand, when the tube 100 is detached from the male member 11, the release member 18 is rotated from the lock position X to the release position Y. First, by applying a certain force to the release member 18, the protruding portion 19 gets over the protruding portion 14 </ b> F by elastic deformation. Further, the release member 18 is rotated from the shallow groove portion 14C to the deep groove portion 14D via the inclined portion 14E. At this time, since the spring portion 20 is fixed to the side face of the release position of the projection portion 19, the spring portion 20 is intentionally pressed against the other end portion 14 </ b> B of the notch portion 14 together with the projection portion 19. The protrusion 19 cannot be rotated to the release position Y unless 20 is contracted from the natural length. Thereby, even when the release member 18 is turned from the lock position X when the joint 10 is used, the turning to the release position Y can be suppressed or prevented.

よって、突起部１９を解除位置Ｙに位置させるためには、再度、解除部材１８に対し一定の力を加えることで、突起部１９に固設されたばね部２０を、自然長から収縮させる。このようにして突起部１９を解除位置Ｙまで回動させた後、突起部１９およびばね部２０を深溝部１４Ｄに係合させながら解除部材１８を凹状挿入部１３内に押込むことで、解除部材１８の先端部１８Ｃが、係止部材１６のＶ字状の内周側傾斜面１６Ａを押圧する。これにより、係止部材１６が内周側から押し広げられて拡径するので、チューブ１００の係止状態が解除され、チューブ１００が雄型部材１１から離脱可能となる。   Therefore, in order to position the protrusion 19 at the release position Y, the spring 20 fixed to the protrusion 19 is contracted from the natural length by applying a certain force to the release member 18 again. After the protrusion 19 is rotated to the release position Y in this way, the release member 18 is pushed into the concave insertion portion 13 while the protrusion 19 and the spring portion 20 are engaged with the deep groove portion 14D. The tip 18C of the member 18 presses the V-shaped inner peripheral inclined surface 16A of the locking member 16. Thereby, since the locking member 16 is pushed and expanded from the inner peripheral side to expand the diameter, the locked state of the tube 100 is released, and the tube 100 can be detached from the male member 11.

なお、上記実施形態では、解除部材１８の突起部１９の解除位置側面にばね部２０を設けるものとしたが、これとは逆に、切欠き部１４の解除位置Ｙ側の端部１４Ｂの壁面にばね部を設けるものとしてもよい（図示せず）。この場合、切欠き部１４に設ける深溝部１４Ｄは、解除位置Ｙにおいて、ばね部を収縮させた状態で突起部１９を挿嵌することが可能となるよう形成する。この場合においても、上記実施形態におけるのと同様に、突起部１９を介してばね部を切欠き部１４の端部１４Ｂに意図的に押し付けて、ばね部を自然長よりも収縮させなければ、突起部１９を解除位置Ｙまで回動させることができないので、継手１０の使用時に、不用意に解除部材１８が解除位置Ｙまで回動することを、抑制または防止することができる。   In the above-described embodiment, the spring portion 20 is provided on the side of the release position of the protrusion 19 of the release member 18. Conversely, the wall surface of the end portion 14B on the release position Y side of the notch portion 14 is provided. It is good also as what provides a spring part in (not shown). In this case, the deep groove portion 14 </ b> D provided in the notch portion 14 is formed so that the protruding portion 19 can be inserted into the release position Y in a state where the spring portion is contracted. Even in this case, as in the above-described embodiment, if the spring portion is intentionally pressed against the end portion 14B of the notch portion 14 via the protrusion portion 19 and the spring portion is not contracted from the natural length, Since the protrusion 19 cannot be rotated to the release position Y, it is possible to suppress or prevent the release member 18 from inadvertently rotating to the release position Y when the joint 10 is used.

１０ 継手
１１ 雄型部材
１２ 雌型部材
１３ 凹状挿入部
１３Ａ 凹部
１４ 切欠き部
１４Ａ，１４Ｂ 切欠き部の端部
１４Ｃ 浅溝部
１４Ｄ 深溝部
１４Ｅ 傾斜部
１４Ｆ 凸部
１５ 保持部
１５Ａ 段差部
１６ 係止部材
１６Ａ 内周縁部
１６Ｂ 内周側傾斜面
１７ 保持部材
１７Ａ 凸部
１７Ｂ 突起
１７Ｃ 傾斜部
１８ 解除部材
１８Ａ 突起
１８Ｂ フランジ部
１８Ｃ 軸方向内側端部
１９ 突起
２０，５０ ばね部
２１ リング状部材
２２，２６，２７ Ｏリング
２３ 係止部
２３Ａ 凸部
２３Ｂ 溝部
２３Ｃ 端部
２４ 挿入口
２４Ａ 凹部
２５ 接続部
２５Ａ ねじ部
３０，４０ 流路
１００ チューブ
Ａ ロック位置
Ｂ 解除位置 DESCRIPTION OF SYMBOLS 10 Joint 11 Male member 12 Female member 13 Concave insertion part 13A Concave part 14 Notch part 14A, 14B Notch part edge part 14C Shallow groove part 14D Deep groove part 14E Inclination part 14F Protrusion part 15 Holding part 15A Step part 16 Locking Member 16A Inner peripheral edge portion 16B Inner peripheral inclined surface 17 Holding member 17A Protruding portion 17B Protrusion 17C Inclined portion 18 Release member 18A Protrusion 18B Flange portion 18C Axial inner end portion 19 Protrusion 20, 50 Spring portion 21 Ring-shaped members 22, 26 , 27 O-ring 23 Locking portion 23A Convex portion 23B Groove portion 23C End portion 24 Insertion port 24A Concavity 25 Connection portion 25A Screw portion 30, 40 Channel 100 Tube A Lock position B Release position

Claims (5)

一方の端部に、チューブが挿入される凹状挿入部を有するとともに、他方の端部に、配管に接続される接続部を有する継手本体を備え、
前記凹状挿入部内に挿嵌され、挿入された前記チューブを係止する係止部材と、
一方の端部が前記凹状挿入部から突出するとともに他方の端部が該凹状挿入部内に挿嵌され、該凹状挿入部の端部に周方向に設けられたロック位置と解除位置との間を回動自在に形成されて、該解除位置で該凹状挿入部内に押込まれることで、押込まれた先端部により前記係止部材を押圧して、前記チューブの係止状態を解除する解除部材と、を有する継手であって、
前記凹状挿入部の入口側端部の内周に、前記ロック位置から前記解除位置まで切欠き部を有し、前記解除部材の突出側端部近傍の外周に、該切欠き部に係合可能な突起部を有し、
前記突起部の解除位置側にばね部が固設されるとともに、前記切欠き部が、前記解除位置において、該突起部および収縮させた該ばね部を挿嵌可能な深溝部を有することを特徴とする継手。 While having a concave insertion portion into which the tube is inserted at one end, and a joint body having a connection portion connected to the pipe at the other end,
A locking member that is fitted into the concave insertion portion and locks the inserted tube;
One end protrudes from the concave insertion portion and the other end is inserted into the concave insertion portion. Between the locking position and the release position provided in the circumferential direction at the end of the concave insertion portion. A release member that is formed to be rotatable and is pushed into the concave insertion portion at the release position so as to press the locking member by the pushed-in tip portion and release the locking state of the tube; A joint having,
There is a notch on the inner periphery of the inlet side end of the concave insertion portion from the lock position to the release position, and it can be engaged with the notch on the outer periphery in the vicinity of the protruding end of the release member Have a protruding part,
A spring portion is fixed on the release position side of the protrusion, and the notch has a deep groove portion into which the protrusion and the contracted spring portion can be inserted at the release position. And fittings. 一方の端部に、チューブが挿入される凹状挿入部を有するとともに、他方の端部に、配管に接続される接続部を有する継手本体を備え、
前記凹状挿入部内に挿嵌され、挿入された前記チューブを係止する係止部材と、
一方の端部が前記凹状挿入部から突出するとともに他方の端部が該凹状挿入部内に挿嵌され、該凹状挿入部の端部に周方向に設けられたロック位置と解除位置との間を回動自在に形成されて、該解除位置で該凹状挿入部内に押込まれることで、押込まれた先端部により前記係止部材を押圧して、前記チューブの係止状態を解除する解除部材と、を有する継手であって、
前記凹状挿入部の入口側端部の内周に、前記ロック位置から前記解除位置まで切欠き部を有し、前記解除部材の突出側端部近傍の外周に、該切欠き部に係合可能な突起部を有し、
前記切欠き部の解除位置側壁面にばね部が固設されるとともに、該切欠き部が、前記解除位置において、該ばね部を収縮させた状態で前記突起部を挿嵌可能な深溝部を有することを特徴とする継手。 While having a concave insertion portion into which the tube is inserted at one end, and a joint body having a connection portion connected to the pipe at the other end,
A locking member that is fitted into the concave insertion portion and locks the inserted tube;
One end protrudes from the concave insertion portion and the other end is inserted into the concave insertion portion. Between the locking position and the release position provided in the circumferential direction at the end of the concave insertion portion. A release member that is formed to be rotatable and is pushed into the concave insertion portion at the release position so as to press the locking member by the pushed-in tip portion and release the locking state of the tube; A joint having,
There is a notch on the inner periphery of the inlet side end of the concave insertion portion from the lock position to the release position, and it can be engaged with the notch on the outer periphery in the vicinity of the protruding end of the release member Have a protruding part,
A spring portion is fixed on the side wall surface of the release position of the notch, and the notch has a deep groove portion into which the protrusion can be inserted in the state where the spring portion is contracted at the release position. A joint characterized by having. 前記ばね部が断面Ｎ字状の板ばねである請求項１または２記載の継手。   The joint according to claim 1 or 2, wherein the spring portion is a leaf spring having an N-shaped cross section. 前記ばね部が、ゴム材料、樹脂材料または金属材料よりなる請求項１〜３のうちいずれか記載の継手。   The joint according to any one of claims 1 to 3, wherein the spring portion is made of a rubber material, a resin material, or a metal material. 前記チューブが液体輸送用ホースである請求項１〜４のうちいずれか一項記載の継手。   The joint according to any one of claims 1 to 4, wherein the tube is a liquid transport hose.
JP2011274582A 2011-12-15 2011-12-15 Fitting Expired - Fee Related JP5779082B2 (en)

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