JP4696029B2 - Split ring for joints and joints - Google Patents

Split ring for joints and joints Download PDF

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JP4696029B2
JP4696029B2 JP2006181726A JP2006181726A JP4696029B2 JP 4696029 B2 JP4696029 B2 JP 4696029B2 JP 2006181726 A JP2006181726 A JP 2006181726A JP 2006181726 A JP2006181726 A JP 2006181726A JP 4696029 B2 JP4696029 B2 JP 4696029B2
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pipe
joint
split ring
diameter
ring
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JP2008008457A (en
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剛一 中村
晃 上野
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ONDA MFG.CO.,LTD.
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ONDA MFG.CO.,LTD.
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Description

本発明は、例えば給水系や給湯系の配管システムでパイプの端部間を接続する継手やパイプの端部と水栓器具とを接続する継手において、パイプの抜け出しを規制する継手用割リング、並びに、その割リングを利用した継手に関するものである。   The present invention is, for example, a joint split ring for restricting the withdrawal of a pipe in a joint for connecting between pipe ends in a water supply system or a hot water system piping system, or a joint for connecting a pipe end and a faucet instrument, In addition, the present invention relates to a joint using the split ring.

従来、下記特許文献１では、切離部を有するロックリングの一部または全部が樹脂により成形されているため、寸法誤差があってもロックリングを良好な状態で組み付けることはできるが、ロックリングが成形時の変形や経年変化による変形で十分な機能を発揮できなくなるおそれがあった。   Conventionally, in Patent Document 1 below, a part or all of a lock ring having a cut-off portion is molded from resin, so that even if there is a dimensional error, the lock ring can be assembled in a good state. However, there is a possibility that sufficient functions cannot be exhibited due to deformation during molding or deformation due to aging.

そこで、下記特許文献２では、ロックリングの分割部において相対向する端部に形成された切欠間に横ずれ防止用留めピースを嵌め込んで連結し、この横ずれ防止用留めピースによりロックリングの変形を防止している。
特開２０００−１０４８７１号公報 特開平７−２８０１４６号公報 Therefore, in Patent Document 2 below, a lateral slip prevention fastening piece is fitted and connected between notches formed at opposite ends of the split portion of the lock ring, and the lock ring is deformed by the lateral slip prevention fastening piece. It is preventing.
JP 2000-104871 A Japanese Patent Laid-Open No. 7-280146

しかし、上記特許文献２では、ロックリングに対する横ずれ防止用留めピースの組付けが煩雑であるため、その組付けの際における作業時間やコストの面で問題があった。
この発明は、継手用割リング並びにその割リングを利用した継手において、上記横ずれ防止用留めピースに代わる連結手段を採用することにより、横ずれ防止用留めピースの組付けの手間を省くとともに、その連結手段により、成形時や経年変化における割リングの変形を規制することを目的としている。 However, in the above-mentioned Patent Document 2, there is a problem in terms of working time and cost during the assembly because the assembly of the retaining piece for preventing the lateral displacement with respect to the lock ring is complicated.
In the split ring for joints and joints using the split ring, the present invention eliminates the trouble of assembling the side slip prevention fastening pieces by employing a connecting means instead of the side slip prevention fastening pieces. The purpose is to regulate the deformation of the split ring during molding and aging.

後記実施形態の図面（図１〜５）の符号を援用して本発明を説明する。
請求項１の発明にかかる継手用割リング３０においては、継手本体１に差し込まれたパイプ４５を締め付けて継手本体１からのパイプ４５の抜け出しを規制する。その割リング３０の本体３１は、切り欠いて形成した両端部３２と、その両端部３２を結ぶ外周面３６と、その両端部３２を結ぶとともにパイプ４５の外周面４７を締め付ける内周面４０とを有している。その両端部３２の周縁の内側に形成した相対向両端面３２ａと、その相対向両端面３２ａの外周端縁間を結ぶ外周方向面３６ａと、その相対向両端面３２ａの内周端縁間を結ぶ内周方向面４０ａとにより区画される空域Ｓで、その相対向両端面３２ａから連繋部３３を一体形成している。 The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 5) of the embodiments described later.
In the joint split ring 30 according to the first aspect of the invention, the pipe 45 inserted into the joint body 1 is tightened to prevent the pipe 45 from coming out of the joint body 1 . A main body 31 of the split ring 30 includes both end portions 32 formed by notching, an outer peripheral surface 36 connecting the both end portions 32, an inner peripheral surface 40 connecting the both end portions 32 and tightening the outer peripheral surface 47 of the pipe 45. have. Between the opposing opposite end faces 32a formed inside the periphery of the both end portions 32, the outer peripheral direction surface 36a connecting the outer peripheral edges of the opposite opposing end faces 32a, and the inner peripheral edge of the opposite opposing end faces 32a In the airspace S defined by the inner circumferential surface 40a to be connected, the connecting portion 33 is integrally formed from the opposite end surfaces 32a.

従って、請求項１の発明では、割リング本体３１の両端部３２間を繋ぐ連繋部３３を割リング本体３１と一体成形したので、この連繋部３３により成形時や経年変化における割リング３０の変形を規制することができるばかりではなく、この連繋部３３を割リング本体３１に組み付ける必要がなくなり、組付けの手間を省くことができる。 Therefore, in the invention of claim 1, the connecting portion 33 that connects the end portions 32 of the split ring main body 31 is formed integrally with the split ring main body 31, so that the connecting portion 33 deforms the split ring 30 at the time of molding or over time. Not only can be regulated, but it is not necessary to assemble the connecting portion 33 to the split ring main body 31, and the labor of assembling can be saved.

さらに、請求項１の発明では、前記連繋部３３は、割リング本体３１の両端部３２が互いに接近する縮径時に、前記相対向両端面３２ａと外周方向面３６ａと内周方向面４０ａとにより区画される空域Ｓの範囲内で、内側または外側に湾曲しまたは破断されて変形し得る。従って、この連繋部３３の変形により、割リング本体３１が縮径してパイプ４５を締め付けることができるとともに、パイプ４５の抜出し防止機能を阻害することはない。 Further, in the invention of claim 1, the connecting portion 33 is formed by the opposed both end surfaces 32a, the outer circumferential surface 36a, and the inner circumferential surface 40a when the diameters of the both ends 32 of the split ring main body 31 approach each other. Within the range of the airspace S to be partitioned, it can be deformed by being bent or broken to the inside or the outside. Therefore, the deformation of the connecting portion 33 can reduce the diameter of the split ring body 31 and tighten the pipe 45, and does not hinder the function of preventing the pipe 45 from being pulled out.

さらに、請求項１の発明では、前記連繋部３３は、割リング本体３１の両端部３２に対し一体に繋がる基端部４３と、その両基端部４３間で湾曲する変形可能部４４とを有する両持ち梁状の板ばねである。従って、連繋部３３を変形させ易い。 Furthermore, in the invention of claim 1, the connecting portion 33 includes a base end portion 43 that is integrally connected to both end portions 32 of the split ring main body 31, and a deformable portion 44 that is curved between the base end portions 43. It is a doubly supported beam-like leaf spring. Therefore, the connecting portion 33 is easily deformed.

請求項１の発明を前提とする請求項２の発明において、前記割リング本体３１と連繋部３３とは樹脂により一体成形されている。請求項２の発明では、割リング３０を容易に成形することができる。 In the invention of claim 2 premised on the invention of claim 1 , the split ring body 31 and the connecting portion 33 are integrally formed of resin. In the invention of claim 2 , the split ring 30 can be easily formed.

請求項３の発明にかかる継手は、請求項１または請求項２の発明に記載の継手用割リング３０を備えている。請求項３の発明では、請求項１または請求項２の発明に記載の継手用割リング３０を利用して、継手本体１からのパイプ４５の抜け出しを規制することができる。 A joint according to a third aspect of the invention includes the joint split ring 30 according to the first or second aspect of the invention. In the third aspect of the invention, the joint split ring 30 according to the first or second aspect of the invention can be used to restrict the pipe 45 from coming out of the joint body 1.

請求項３の発明を前提とする請求項４の発明においては、継手本体１に差し込まれたパイプ４５に引抜力Ｆが作用した場合に縮径して継手本体１からのパイプ４５の抜け出しを規制する抜止めリング２４を備え、前記継手用割リング３０はその抜止めリング２４の縮径に伴い縮径してパイプ４５を締め付けることにより継手本体１からのパイプ４５の抜け出しを規制する。請求項４の発明では、抜止めリング２４と割リング３０とが協働して、継手本体１からのパイプ４５の抜け出しを規制することができる。 In the invention of claim 4 which presupposes the invention of claim 3 , the diameter of the pipe 45 is reduced when the pulling force F acts on the pipe 45 inserted into the joint body 1, and the withdrawal of the pipe 45 from the joint body 1 is restricted. The joint split ring 30 is reduced with the diameter of the retaining ring 24 and tightens the pipe 45 to restrict the pipe 45 from coming out of the joint body 1. In the invention of claim 4 , the retaining ring 24 and the split ring 30 cooperate to restrict the pipe 45 from coming out of the joint body 1.

請求項４の発明を前提とする請求項５の発明において、前記抜止めリング２４は継手本体１に差し込まれたパイプ４５に引抜力Ｆが作用した場合に縮径してパイプ４５にくい込む。請求項５の発明では、パイプ４５に引抜力Ｆが作用した場合、パイプ４５に対する抜止めリング２４のくい込みに加え、割リング３０の縮径によりパイプ４５が締め付けられるので、パイプ４５に引抜力Ｆが瞬時に作用した場合でも、抜止めリング２４と割リング３０とが協働して継手本体１からのパイプ４５の抜け出しを規制し、パイプ４５が切断される事態を回避することができる。 In the invention of claim 5 based on the invention of claim 4, the retaining ring 24 is reduced in diameter when the pulling force F acts on the pipe 45 inserted into the joint body 1, so that the pipe 45 is not easily inserted. In the invention of claim 5 , when the pulling force F acts on the pipe 45, the pipe 45 is tightened by the reduced diameter of the split ring 30 in addition to the biting of the retaining ring 24 with respect to the pipe 45. Even when the sag acts instantaneously, the retaining ring 24 and the split ring 30 cooperate to regulate the withdrawal of the pipe 45 from the joint body 1, and the situation where the pipe 45 is cut can be avoided.

請求項５の発明を前提とする請求項６の発明において、前記割リング３０は、抜止めリング２４に接触して抜止めリング２４の縮径により縮径方向に付勢される接触部（当接面３９）と、その接触部３９の動きに基づきパイプ４５を締め付けてその抜け出しを抑える締付部（締付面４０）とを備えている。請求項６の発明では、パイプ４５に引抜力Ｆが作用した場合、抜止めリング２４の縮径により接触部３９が縮径方向に付勢され、締付部４０がパイプ４５を締め付けるので、第７の発明の効果を向上させることができる。 In the invention of claim 6 , which presupposes the invention of claim 5, the split ring 30 is in contact with the retaining ring 24 and is urged in the direction of diameter reduction by the diameter of the retaining ring 24. A contact surface 39) and a tightening portion (tightening surface 40) for tightening the pipe 45 based on the movement of the contact portion 39 to prevent the pipe 45 from coming off. In the invention of claim 6 , when the pulling force F acts on the pipe 45, the contact portion 39 is urged in the diameter reducing direction by the diameter reduction of the retaining ring 24, and the tightening portion 40 tightens the pipe 45. The effect of the seventh invention can be improved.

本発明は、継手用割リング３０並びにその割リング３０を利用した継手において、割リング本体３１の両端部３２間を繋ぐようにその両端部３２と一体成形した特定形態の連繋部３３を採用することにより、組付けの手間を省くとともに、成形時や経年変化における割リング３０の変形を規制することができる。また、割リング本体３１の縮径時に所定空域Ｓの範囲内で変形するので、パイプ４５の抜出し防止機能を阻害することはない。 The present invention employs a joint 33 having a specific form integrally formed with both ends 32 of the split ring 30 for joints and the joint using the split ring 30 so as to connect both ends 32 of the split ring main body 31. As a result, it is possible to save the labor of assembling and to regulate the deformation of the split ring 30 at the time of molding or aging. Further, since the split ring body 31 is deformed within the range of the predetermined airspace S when the diameter of the split ring body 31 is reduced, the function of preventing the pipe 45 from being pulled out is not hindered.

以下、本発明の一実施形態にかかる継手について図１〜５を参照して説明する。
図１（ａ）に示す継手本体１の連結筒２において、内孔３の中心線３ａの方向の中間部に形成された工具嵌合筒部４よりも基端側で隣接して雄ねじ筒部５が形成されているとともに、その工具嵌合筒部４よりも先端側で隣接して雄ねじ筒部６が形成され、この雄ねじ筒部６よりも先端側で隣接して案内筒部７が形成されている。この継手本体１においては、前記連結筒２の雄ねじ筒部６に螺着された蓋筒８が前記連結筒２の案内筒部７の外周に面して先端側へ延び、この蓋筒８の先端部には開口９ａを有するナット９が螺着されている。 Hereinafter, a joint according to an embodiment of the present invention will be described with reference to FIGS.
In the connecting cylinder 2 of the joint body 1 shown in FIG. 1A, the male thread cylinder part is adjacent to the base end side of the tool fitting cylinder part 4 formed in the middle part of the inner hole 3 in the direction of the center line 3a. 5 is formed, a male threaded cylinder part 6 is formed adjacent to the tool fitting cylinder part 4 on the tip side, and a guide cylinder part 7 is formed adjacent to the tip side of the male screw cylinder part 6. Has been. In this joint body 1, a lid cylinder 8 screwed to the male threaded cylinder portion 6 of the connecting cylinder 2 faces the outer periphery of the guide cylinder portion 7 of the connecting cylinder 2 and extends to the distal end side. A nut 9 having an opening 9a is screwed to the tip portion.

前記連結筒２の案内筒部７の外周と前記蓋筒８及びナット９の内周との間に形成された挿嵌室１０において、この蓋筒８の内周には透明な窓筒１１が嵌め込まれている。この窓筒１１は、蓋筒８の内周面に当てがわる周壁部１２と、この周壁部１２の基端部から内側に突設された端壁部１３と、この周壁部１２の先端部外周に形成された係止突部１４とを有している。この蓋筒８の内周面で連結筒２の内孔３の中心線３ａの方向へ並設された両係止溝１５のうち先端側の係止溝１５にこの係止突部１４が係入されている。この蓋筒８には複数の窓孔１６が形成され、蓋筒８の外側からこの窓孔１６及び窓筒１１を通して前記挿嵌室１０を確認することができる。この窓筒１１の周壁部１２はこの各窓孔１６を塞いで挿嵌室１０へのごみ等の侵入を防止する。   In an insertion chamber 10 formed between the outer periphery of the guide tube portion 7 of the connecting tube 2 and the inner periphery of the cover tube 8 and the nut 9, a transparent window tube 11 is formed on the inner periphery of the cover tube 8. It is inserted. The window tube 11 includes a peripheral wall portion 12 that is applied to the inner peripheral surface of the lid tube 8, an end wall portion 13 that protrudes inward from the base end portion of the peripheral wall portion 12, and a distal end portion of the peripheral wall portion 12. It has the latching protrusion 14 formed in the outer periphery. The engaging projection 14 is engaged with the engaging groove 15 on the distal end side of both engaging grooves 15 arranged in parallel in the direction of the center line 3a of the inner hole 3 of the connecting cylinder 2 on the inner peripheral surface of the lid cylinder 8. It has been entered. A plurality of window holes 16 are formed in the lid cylinder 8, and the insertion chamber 10 can be confirmed through the window holes 16 and the window cylinder 11 from the outside of the lid cylinder 8. The peripheral wall portion 12 of the window tube 11 closes the window holes 16 to prevent dust and the like from entering the insertion chamber 10.

前記連結筒２の案内筒部７の外周には幅狭のシール溝１７と幅広のシール溝１８と締付凹所１９とが連結筒２の内孔３の中心線３ａの方向で基端側から先端側へ並設され、幅狭のシール溝１７にはＯリング２０が嵌め込まれているとともに、幅広のシール溝１８にはシール帯２１が嵌め込まれている。この締付凹所１９は係止突条２２と係止突条２３との間で周方向全体に形成されている。   A narrow seal groove 17, a wide seal groove 18, and a tightening recess 19 are provided on the outer periphery of the guide cylinder portion 7 of the connecting cylinder 2 in the direction of the center line 3 a of the inner hole 3 of the connecting cylinder 2. The O-ring 20 is fitted in the narrow seal groove 17 and the seal band 21 is fitted in the wide seal groove 18. The tightening recess 19 is formed in the entire circumferential direction between the locking ridge 22 and the locking ridge 23.

前記挿嵌室１０において、窓筒１１の先端部に隣接して蓋筒８及びナット９の内周には厚さ０．２〜０．３ｍｍの薄いステンレス板により成形された抜止めリング２４が嵌め込まれている。図１（ｂ）に示すように、この抜止めリング２４において、支持環２５の内周全体から波形状の規制板２６が略４５度の折曲角度で折り曲げられ、この規制板２６には略同一長さをなす舌片状の規制片２７が周方向へ並ぶように形成されている。図１（ａ）及び図２（ｃ）に示すように、この抜止めリング２４において、支持環２５はナット９の内周に形成された段差状の当接面２８と前記蓋筒８の先端面２９との間に挟まれ、規制板２６の各規制片２７がその支持環２５から窓筒１１の先端部に向けて斜め内側へ延びている。   In the insertion chamber 10, a retaining ring 24 formed of a thin stainless plate having a thickness of 0.2 to 0.3 mm is provided on the inner periphery of the lid cylinder 8 and the nut 9 adjacent to the tip of the window cylinder 11. It is inserted. As shown in FIG. 1B, in the retaining ring 24, a wave-shaped restricting plate 26 is bent from the entire inner periphery of the support ring 25 at a bending angle of approximately 45 degrees. The tongue-shaped restricting pieces 27 having the same length are formed so as to be arranged in the circumferential direction. As shown in FIGS. 1 (a) and 2 (c), in the retaining ring 24, the support ring 25 includes a stepped contact surface 28 formed on the inner periphery of the nut 9 and the tip of the lid cylinder 8. Each regulation piece 27 of the regulation plate 26 extends diagonally inward from the support ring 25 toward the distal end portion of the window tube 11.

前記挿嵌室１０において、抜止めリング２４に隣接して蓋筒８及びナット９の内周には図５（ａ）（ｂ）に示すようにＰＰＳ生材などの樹脂により成形された割リング３０の割リング本体３１が嵌め込まれている。 In the insertion chamber 10, a split ring formed of resin such as PPS raw material on the inner periphery of the lid cylinder 8 and the nut 9 adjacent to the retaining ring 24 as shown in FIGS. Thirty split ring main bodies 31 are fitted .

図１（ａ）及び図２（ｃ）に示すように、前記ナット９の内周には、前記抜止めリング２４の支持環２５に面する当接面２８のほかに、その当接面２８から連結筒２の内孔３の中心線３ａに沿って延びる係止面３４と、その係止面３４から開口９ａへ向けて斜め内側へその中心線３ａに対し略３０度傾斜して延びる係止面３５とが形成されている。前記割リング本体３１の外周には、前記ナット９の係止面３４に面する係止面３６と、この係止面３６から前記ナット９の係止面３５に面するように傾斜して延びる係止面３７と、この係止面３６から前記抜止めリング２４の支持環２５に面するように延びる当接面３８と、この当接面３８から前記抜止めリング２４の規制板２６に面するように傾斜して延びる当接面３９とが形成されている。この割リング本体３１の係止面３６，３７及び当接面３８がこのナット９の係止面３４，３５及び抜止めリング２４の支持環２５に接触し得るため、割リング本体３１はナット９の係止面３４，３５と抜止めリング２４の支持環２５との間で僅かに動き得る。この割リング本体３１の内周には、パイプ４５の外周面４７の外径よりも大きい内径を有する締付面４０と、この締付面４０から段差状に前記抜止めリング２４の規制板２６側へ延びる回避面４１と、この締付面４０から前記ナット９の係止面３５側へ連結筒２の内孔３の中心線３ａに対し略２０度傾斜して延びる面取面４２とが形成されている。   As shown in FIGS. 1 (a) and 2 (c), on the inner periphery of the nut 9, in addition to the contact surface 28 facing the support ring 25 of the retaining ring 24, the contact surface 28 is provided. A locking surface 34 extending from the locking surface 34 along the center line 3a of the inner hole 3 of the connecting tube 2 and extending obliquely inward from the locking surface 34 toward the opening 9a with respect to the center line 3a. A stop surface 35 is formed. On the outer periphery of the split ring main body 31, a locking surface 36 that faces the locking surface 34 of the nut 9, and an inclination extending from the locking surface 36 so as to face the locking surface 35 of the nut 9. A locking surface 37, a contact surface 38 extending from the locking surface 36 so as to face the support ring 25 of the retaining ring 24, and a surface from the contacting surface 38 to the restriction plate 26 of the retaining ring 24. An abutting surface 39 extending so as to incline is formed. Since the locking surfaces 36 and 37 and the contact surface 38 of the split ring main body 31 can contact the locking surfaces 34 and 35 of the nut 9 and the support ring 25 of the retaining ring 24, the split ring main body 31 is connected to the nut 9. It is possible to move slightly between the locking surfaces 34 and 35 and the support ring 25 of the retaining ring 24. On the inner periphery of the split ring main body 31, there are a fastening surface 40 having an inner diameter larger than the outer diameter of the outer peripheral surface 47 of the pipe 45, and a regulating plate 26 of the retaining ring 24 stepped from the fastening surface 40. An avoiding surface 41 extending to the side, and a chamfered surface 42 extending from the tightening surface 40 toward the locking surface 35 side of the nut 9 with an inclination of approximately 20 degrees with respect to the center line 3a of the inner hole 3 of the connecting cylinder 2. Is formed.

図５（ａ）（ｂ）に示すように、前記割リング本体３１は、切り欠いて形成された両端部３２の周縁の内側に形成された相対向両端面３２ａと、その相対向両端面３２ａの外周端縁間を結ぶ外周方向面３６ａと、その相対向両端面３２ａの内周端縁間を結ぶ内周方向面４０ａとにより区画される空域Ｓで、その相対向両端面３２ａから連繋部３３が一体形成されている。この連繋部３３は、前記割リング本体３１の両端部３２で係止面３６（外周面）から一体に繋がる基端部４３と、その両基端部４３間で一体に形成された変形可能部４４とを有している。この変形可能部４４は、この両基端部４３を互いに結ぶ想定線に対し締付面４０（内周面）側へ緩やかな円弧状に湾曲する両持ち梁状の板ばねであって、一様な断面長方形状をなす。 As shown in FIGS. 5 (a) and 5 (b), the split ring main body 31 includes opposing opposite end faces 32a formed inside the peripheral edges of both end parts 32 formed by notching, and opposite opposing end faces 32a. In the airspace S defined by the outer peripheral direction surface 36a connecting between the outer peripheral end edges and the inner peripheral direction surface 40a connecting the inner peripheral end edges of the opposing opposite end faces 32a, the connecting portion from the opposite opposing end faces 32a 33 is integrally formed. The connecting portion 33 includes a base end portion 43 integrally connected from the locking surface 36 (outer peripheral surface) at both end portions 32 of the split ring main body 31, and a deformable portion integrally formed between the base end portions 43. 44. The deformable portion 44 is a doubly-supported plate spring that is curved in a gentle arc shape toward the tightening surface 40 (inner peripheral surface) with respect to an assumed line connecting the base end portions 43 to each other. It has a rectangular cross section.

図２（ａ）（ｂ）に示すように、前記継手本体１の挿嵌室１０にナット９の開口９ａから樹脂製のパイプ４５を挿入すると、そのパイプ４５の内端部が前記窓筒１１の端壁部１３に当接してその端壁部１３を押すため、この窓筒１１の全体がパイプ４５とともに移動し、前記蓋筒８の両係止溝１５のうち先端側の係止溝１５からこの窓筒１１の周壁部１２の係止突部１４がその周壁部１２の弾性に抗して離脱した後にその周壁部１２の弾性により基端側の係止溝１５に係入される。この係止突部１４が基端側の係止溝１５に係入される際に打撃音が生じる。継手本体１の挿嵌室１０にパイプ４５が挿入されると、その内周面４６は連結筒２の案内筒部７の外周に面し、その外周面４７は窓筒１１の周壁部１２の内周や抜止めリング２４の規制板２６の内周や割リング本体３１の内周に面する。このパイプ４５の内周面４６と連結筒２の案内筒部７の外周との間はＯリング２０及びシール帯２１によりシールされる。この案内筒部７の両係止突条２２，２３はパイプ４５の内周面４６に面し、その両係止突条２２，２３の外径がこのパイプ４５の内周面４６の内径よりも僅かに小さくなっている。抜止めリング２４の規制板２６の各規制片２７はその弾性に抗して外側へ押し広げられてパイプ４５の外周面４７に圧接される。割リング本体３１の締付面４０の内径がパイプ４５の外周面４７の外径よりも僅かに大きくなっているため、その締付面４０とパイプ４５の外周面４７との間に僅かな隙間が生じる。   As shown in FIGS. 2A and 2B, when a resin pipe 45 is inserted into the insertion chamber 10 of the joint body 1 from the opening 9 a of the nut 9, the inner end portion of the pipe 45 becomes the window tube 11. The entire window tube 11 moves together with the pipe 45 so as to abut against the end wall portion 13 and push the end wall portion 13, and the locking groove 15 on the distal end side of the both locking grooves 15 of the lid tube 8. Therefore, after the locking projection 14 of the peripheral wall portion 12 of the window cylinder 11 is disengaged against the elasticity of the peripheral wall portion 12, it is engaged with the locking groove 15 on the base end side due to the elasticity of the peripheral wall portion 12. A hitting sound is generated when the locking projection 14 is engaged with the locking groove 15 on the proximal end side. When the pipe 45 is inserted into the insertion chamber 10 of the joint body 1, the inner peripheral surface 46 faces the outer periphery of the guide tube portion 7 of the connecting tube 2, and the outer peripheral surface 47 of the peripheral tube portion 12 of the window tube 11. It faces the inner periphery, the inner periphery of the regulating plate 26 of the retaining ring 24 and the inner periphery of the split ring main body 31. The space between the inner peripheral surface 46 of the pipe 45 and the outer periphery of the guide cylinder portion 7 of the connecting cylinder 2 is sealed by the O-ring 20 and the seal band 21. Both locking ridges 22 and 23 of the guide cylinder 7 face the inner peripheral surface 46 of the pipe 45, and the outer diameters of both the locking ridges 22 and 23 are larger than the inner diameter of the inner peripheral surface 46 of the pipe 45. Is slightly smaller. Each restricting piece 27 of the restricting plate 26 of the retaining ring 24 is pushed outward against the elasticity and pressed against the outer peripheral surface 47 of the pipe 45. Since the inner diameter of the tightening surface 40 of the split ring body 31 is slightly larger than the outer diameter of the outer peripheral surface 47 of the pipe 45, a slight gap is formed between the tightening surface 40 and the outer peripheral surface 47 of the pipe 45. Occurs.

図３（ａ）（ｂ）に示すように、パイプ４５に引抜力Ｆが作用すると、抜止めリング２４の規制板２６の各規制片２７がその引抜力Ｆの向きへ撓んで縮径し、パイプ４５の外周面４７にくい込んでパイプ４５の抜け出しを規制するとともに、各規制片２７の縮径に伴いその各規制片２７により割リング本体３１の当接面３９がその引抜力Ｆの向きへ押される。すると、割リング本体３１の係止面３７がナット９の係止面３５に圧接されるため、図５（ｃ）に示すように、割リング本体３１が縮径されて割リング本体３１の両端部３２が互いに接近し、前記相対向両端面３２ａと外周方向面３６ａと内周方向面４０ａとにより区画される空域Ｓの範囲内で、連繋部３３が変形して内側へ撓む。図４（ａ）（ｂ）に示すように、パイプ４５に引抜力Ｆがさらに作用すると、前述した場合と同様に機能して、図５（ｄ）に示すように、連繋部３３の変形が進み、割リング本体３１の締付面４０がパイプ４５の外周面４７を締め付けてパイプ４５の抜け出しを規制する。しかも、その締付面４０による締付力を案内筒部７の締付凹所１９で受けて両係止突条２２，２３がパイプ４５の内周面４６を圧接するため、この締付面４０と両係止突条２２，２３とによりパイプ４５を係止してパイプ４５の抜け出しをより一層規制する。 As shown in FIGS. 3A and 3B, when a pulling force F acts on the pipe 45, each restricting piece 27 of the restricting plate 26 of the retaining ring 24 bends in the direction of the pulling force F and is reduced in diameter. In addition to restricting the pipe 45 from being pulled out by restricting the outer peripheral surface 47 of the pipe 45, the contact surface 39 of the split ring main body 31 moves toward the direction of the pulling force F by the restriction piece 27 as the diameter of each restriction piece 27 decreases. Pressed. Then, since the locking surface 37 of the split ring main body 31 is pressed against the locking surface 35 of the nut 9, the split ring main body 31 is reduced in diameter as shown in FIG. The parts 32 approach each other , and the connecting part 33 deforms and bends inward within the airspace S defined by the opposed both end faces 32a, the outer circumferential surface 36a and the inner circumferential face 40a . As shown in FIGS. 4 (a) and 4 (b), when the pulling force F further acts on the pipe 45, it functions in the same manner as described above, and the connecting portion 33 is deformed as shown in FIG. 5 (d). The tightening surface 40 of the split ring body 31 tightens the outer peripheral surface 47 of the pipe 45 and restricts the pipe 45 from coming off. In addition, since the tightening force of the tightening surface 40 is received by the tightening recess 19 of the guide cylinder portion 7 and the both locking protrusions 22 and 23 press the inner peripheral surface 46 of the pipe 45, this tightening surface The pipe 45 is locked by the 40 and the locking protrusions 22 and 23 to further restrict the withdrawal of the pipe 45.

割リング３０の連繋部３３については、経年変化により変形しない強度を有し、割リング本体３１の両端部３２間において前記相対向両端面３２ａと外周方向面３６ａと内周方向面４０ａとにより区画される空域Ｓの範囲内で変形可能部４４が湾曲して変形するため、その変形可能部４４がパイプ４５の外周面４７に接触しない。しかし、連繋部３３の変形がパイプ４５の抜出し防止を阻害しなければ、変形可能部４４がパイプ４５の外周面４７に接触してもよい。 The connecting portion 33 of the split ring 30 has a strength that does not deform due to secular change, and is defined between the opposite end portions 32 of the split ring main body 31 by the opposed both end surfaces 32a, the outer peripheral surface 36a, and the inner peripheral surface 40a. Since the deformable portion 44 is bent and deformed within the range of the airspace S , the deformable portion 44 does not contact the outer peripheral surface 47 of the pipe 45. However, the deformable portion 44 may contact the outer peripheral surface 47 of the pipe 45 as long as the deformation of the connecting portion 33 does not hinder the prevention of the extraction of the pipe 45.

前記実施形態以外にも下記のように構成してもよい。
＊ 割リング３０の連繋部３３については、割リング本体３１の縮径時に内側に湾曲する形状に限定するものではなく、例えばその縮径時に外側に湾曲したり破断したりしてもよい。要は、連繋部３３が成形時や経年変化における割リング本体３１の変形を規制するとともに、その連繋部３３の変形がパイプ４５の抜出し防止を阻害しないようにする。 In addition to the above embodiment, the following configuration may be used.
* The connecting portion 33 of the split ring 30 is not limited to a shape that curves inward when the split ring main body 31 is reduced in diameter, and may be bent outward or broken when the diameter is reduced. In short, the connecting portion 33 restricts deformation of the split ring main body 31 during molding or aging, and the deformation of the connecting portion 33 does not hinder the prevention of the pipe 45 from being pulled out.

＊ 前記実施形態では継手本体１にパイプ４５を挿嵌するだけで連結することができるワンタッチ式継手を例示したが、ナットの締め付けによりパイプの抜け出しを規制するメカニカル式継手に割リング３０を取り付けてもよい。   * In the above-described embodiment, the one-touch type joint that can be connected to the joint body 1 simply by inserting and fitting the pipe 45 is illustrated. Also good.

＊ 前記実施形態では抜止めリング２４の縮径に伴い割リング３０が縮径してパイプ４５を締め付けているが、この抜止めリング２４を省略し、この割リング３０の縮径のみによりパイプ４５を締め付ける。   * In the above embodiment, the split ring 30 is reduced in diameter with the diameter of the retaining ring 24 and the pipe 45 is tightened. However, the retaining ring 24 is omitted, and the pipe 45 is only reduced in diameter. Tighten.

＊ 割リング３０の外周面や内周面の形態については、抜止めリング２４の縮径に伴い縮径してパイプ４５を締め付けることができれば特に限定されるものではない。
＊ 継手本体１の構造については、挿嵌室１０を形成できるものであれば特に限定されるものではない。 * The shape of the outer peripheral surface and inner peripheral surface of the split ring 30 is not particularly limited as long as the pipe 45 can be tightened by reducing the diameter of the retaining ring 24.
* The structure of the joint body 1 is not particularly limited as long as the insertion chamber 10 can be formed.

（ａ）は本実施形態にかかる継手にパイプを差し込む前の状態を示す半断面図であり、（ｂ）は（ａ）の継手内の抜止めリングを示す斜視図である。(A) is a half sectional view showing a state before inserting a pipe into the joint according to the present embodiment, and (b) is a perspective view showing a retaining ring in the joint of (a). （ａ）は図１（ａ）の継手にパイプを差し込んだ状態を示す部分断面図であり、（ｂ）は（ａ）の部分拡大図であり、（ｃ）は図１（ａ）の部分拡大図である。(A) is a fragmentary sectional view which shows the state which inserted the pipe in the coupling of Fig.1 (a), (b) is the elements on larger scale of (a), (c) is the part of Fig.1 (a) It is an enlarged view. （ａ）は図２（ａ）の継手でパイプに引抜力が作用した状態を示す部分断面図であり、（ｂ）は（ａ）の部分拡大図である。(A) is the fragmentary sectional view which shows the state where the drawing-out force acted on the pipe by the coupling of Fig.2 (a), (b) is the elements on larger scale of (a). （ａ）は図３（ａ）の継手でパイプにさらに大きな引抜力が作用した状態を示す部分断面図であり、（ｂ）は（ａ）の部分拡大図である。(A) is the fragmentary sectional view which shows the state where much bigger pulling force acted on the pipe with the coupling of Fig.3 (a), (b) is the elements on larger scale of (a). （ａ）は図１（ａ）の継手内の割リングを示す正面図であり、（ｂ）は同じく（ａ）のＡ−Ａ線断面図であり、（ｃ）は図３（ａ）の継手内の割リングを示す正面図であり、（ｄ）は図４（ａ）の継手内の割リングを示す正面図である。(A) is a front view which shows the split ring in the joint of FIG. 1 (a), (b) is the sectional view on the AA line of (a), (c) is FIG. 3 (a). It is a front view which shows the split ring in a joint, (d) is a front view which shows the split ring in the joint of Fig.4 (a).

符号の説明Explanation of symbols

１…継手本体、２４…抜止めリング、３０…割リング、３１…割リング本体、３２…割リング本体の両端部、３３…連繋部、４３…連繋部の基端部、４４…連繋部の変形可能部、４５…パイプ、Ｆ…引抜力。   DESCRIPTION OF SYMBOLS 1 ... Joint main body, 24 ... Stop ring, 30 ... Split ring, 31 ... Split ring main body, 32 ... Both ends of split ring main body, 33 ... Connection part, 43 ... Base end part of a connection part, 44 ... Connection part Deformable part, 45 ... pipe, F ... drawing force.

Claims (6)

継手本体に差し込まれたパイプを締め付けて継手本体からのパイプの抜け出しを規制する割リングであって、
その割リングの本体は、切り欠いて形成した両端部と、その両端部を結ぶ外周面と、その両端部を結ぶとともにパイプの外周面を締め付ける内周面とを有し、
その両端部の周縁の内側に形成した相対向両端面と、その相対向両端面の外周端縁間を結ぶ外周方向面と、その相対向両端面の内周端縁間を結ぶ内周方向面とにより区画される空域で、その相対向両端面から連繋部を一体形成し、この連繋部は、割リング本体の両端部に対し一体に繋がる基端部と、その両基端部間で湾曲する変形可能部とを有する両持ち梁状の板ばねであって、
割リング本体の両端部が互いに接近する縮径時に、前記相対向両端面と外周方向面と内周方向面とにより区画される空域の範囲内で、内側または外側に湾曲しまたは破断されて変形し得る
ことを特徴とする継手用割リング。 A split ring that tightens a pipe inserted into a joint body and regulates the withdrawal of the pipe from the joint body,
The body of the split ring has both ends formed by cutting, an outer peripheral surface connecting the both end portions, and an inner peripheral surface connecting the both end portions and tightening the outer peripheral surface of the pipe,
Opposite end faces formed on the inner side of the peripheral edges of both ends, an outer peripheral direction face connecting outer peripheral edges of the opposite end faces, and an inner peripheral face connecting inner peripheral edges of the opposite end faces In the air space divided by the two, the connecting portions are integrally formed from the opposite end faces, and the connecting portions are bent between the base end portions integrally connected to the both end portions of the split ring body and the base end portions. A cantilever-like leaf spring having a deformable portion that
When the diameter of the split ring main body is reduced toward each other, the inner ring is curved or broken to the inside or outside within the airspace defined by the opposite end faces, the outer peripheral face and the inner peripheral face. A split ring for a joint, characterized in that it can . 前記割リング本体と連繋部とは樹脂により一体成形されていることを特徴とする請求項１に記載の継手用割リング。 The joint split ring according to claim 1 , wherein the split ring main body and the connecting portion are integrally formed of resin. 請求項１または請求項２に記載の継手用割リングを備えたことを特徴とする継手。 A joint comprising the joint split ring according to claim 1 . 継手本体に差し込まれたパイプに引抜力が作用した場合に縮径して継手本体からのパイプの抜け出しを規制する抜止めリングを備え、前記継手用割リングはその抜止めリングの縮径に伴い縮径してパイプを締め付けることにより継手本体からのパイプの抜け出しを規制することを特徴とする請求項３に記載の継手。 Reduced in diameter when the pullout force is applied to the pipe inserted into the fitting body comprises a retainer ring for restricting the exit of the pipe from the fitting body, the diameter of the retainer ring of the split ring Waso for the joint 4. The joint according to claim 3 , wherein the pipe is prevented from coming out of the joint body by reducing the diameter and tightening the pipe. 前記抜止めリングは継手本体に差し込まれたパイプに引抜力が作用した場合に縮径してパイプにくい込むことを特徴とする請求項４に記載の継手。The joint according to claim 4, wherein the retaining ring is reduced in diameter when the pulling force is applied to the pipe inserted into the joint body, so that the pipe is difficult to be inserted. 前記継手用割リングは、抜止めリングに接触して抜止めリングの縮径により縮径方向に付勢される接触部と、その接触部の動きに基づきパイプを締め付けてその抜け出しを抑える締付部とを備えていることを特徴とする請求項５に記載の継手。The joint split ring includes a contact portion that comes into contact with the retaining ring and is biased in the direction of diameter reduction by the diameter of the retaining ring, and a tightening member that tightens the pipe based on the movement of the contact portion to suppress the withdrawal. The joint according to claim 5, further comprising a portion.
JP2006181726A 2006-06-30 2006-06-30 Split ring for joints and joints Active JP4696029B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4769887B2 (en) * 2009-04-27 2011-09-07 株式会社三栄水栓製作所 Pipe joint and pipe connection structure
JP4623758B2 (en) * 2009-06-22 2011-02-02 株式会社テスク Pipe fittings for plastic resin pipes
US10161551B2 (en) 2015-07-09 2018-12-25 A. Raymond Et Cie Quick-connector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10213280A (en) * 1997-01-30 1998-08-11 Nkk Corp Bayonet pipe joint
JP2002115785A (en) * 2000-10-05 2002-04-19 Tabuchi Corp Joint for resin pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10213280A (en) * 1997-01-30 1998-08-11 Nkk Corp Bayonet pipe joint
JP2002115785A (en) * 2000-10-05 2002-04-19 Tabuchi Corp Joint for resin pipe

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