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JP3868252B2 - Pipe fitting - Google Patents

Pipe fitting Download PDF

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Publication number
JP3868252B2
JP3868252B2 JP2001314657A JP2001314657A JP3868252B2 JP 3868252 B2 JP3868252 B2 JP 3868252B2 JP 2001314657 A JP2001314657 A JP 2001314657A JP 2001314657 A JP2001314657 A JP 2001314657A JP 3868252 B2 JP3868252 B2 JP 3868252B2
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JP
Japan
Prior art keywords
inclined surface
insertion tube
insert member
elastic
joint body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2001314657A
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Japanese (ja)
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JP2003120878A (en
Inventor
高橋武夫
Original Assignee
株式会社富士ロック
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to JP2001314657A priority Critical patent/JP3868252B2/en
Publication of JP2003120878A publication Critical patent/JP2003120878A/en
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Publication of JP3868252B2 publication Critical patent/JP3868252B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、石油、電力、化学プラントなどの配管に利用される管継手に関し、特に継手の挿入孔に挿入された弾性挿入管を圧着状態で締付る管継手に関する。
【0002】
【従来の技術】
管継手の一例は、特公昭57−48717号公報に記載されている。この管継手は、螺合部を有する継手本体と、この継手本体の前記螺合部に螺着される締付部材と、この締付部材の支持部の貫通孔から継手本体の挿入孔まで挿入された金属製挿入管と、この金属製挿入管の挿入先端部寄りの部位に外嵌合され、かつ、継手本体のフロント傾斜面ないし先端部と締付部材のリヤ傾斜面との間に形成された間隙内に位置する球状リングとから成っている。
【0003】
上記構成に於いて、締付部材を締付ると、球状リングの外周面は、継手のフロント傾斜面並びにリヤ傾斜面の両方のシール面で押圧される。これにより、球状リングの孔内面の全周が金属製の挿入管の外周面に対して圧接する。
【0004】
しかし、この継手の構造は、挿入管が金属製のものに適用することができるが、ナイロンチューブなど軟質ないし弾性力に富んだ挿入管には適用し難いという問題点があった。その理由は、球状リングは、継手本体のフロント傾斜面ないし先端部と締付部材のリヤ傾斜面との間に形成された間隙に内装されているので、締付部材を締付ると、リングの外壁面がシール面に押圧されるのに伴い、リングの孔内面の全周が挿入管に圧着する反面、挿入管の締付部材の支持部に支持されている部位が締付部材の周方向への摺動回転により捩れるからである(このことを、ここでは「捩れ防止の効果」がないという)。そこで、このような問題点を解決することができる管継手の出現が期待されている。
【0005】
【発明が解決しようとする課題】
本発明は、以上のような従来の実施例が有する問題に鑑み、第1の目的は、弾性挿入管を圧着状態で締付る際に、弾性挿入管の捩れ防止の効果を得ることができる管継手を提供すること。第2の目的は、セッティングを簡単に行なうことができるように構造をシンプル化すること(例えば工具が不要であること)。
【0006】
【課題を解決するための手段】
本発明の管継手は、継手本体1と、この継手本体の螺合部に螺着される締付部材10と、先端部20aがこの締付部材の支持部の貫通孔11から継手本体の挿入孔5まで挿入された弾性挿入管20と、この弾性挿入管の前記先端部20aから挿入されると共に前記挿入孔5に差し込まれるパイプ状のインサート部材とから成り、前記継手本体1の先端部側のラッパ形状フロント傾斜面6は、前記締付部材10に形成されたリヤ傾斜面15に傾斜角度が異なるように対向しており、また、前記インサート部材は、弾性挿入管の挿入先端部に当接するフランジ部23と、このフランジ部に連設し、かつ弾性挿入管の内径と略同一の外形寸法を有する連設部24と、この連設部に膨出状態に連通し、かつ弾性挿入管を外側に膨らませる中間圧接部25と、この中間圧接部に連設し、かつ外周面が中間圧接部から次第に先絞り状に形成された挿入先端部26とから成り、さらに、締付部材10を締付ける際には、前記インサート部材の後退動を許容する間隔をフランジ部23の端面の後方に設定し、折り曲げ状態となった弾性挿入管20の挿入先端部20aは、「インサート部材22の前側傾斜面と締付部材10のリヤ傾斜面15」及び「インサート部材22の後側傾斜面と継手本体1のフロント傾斜面6」に2点で挟持状態となっており、加えて、インサート部材の挿入先端部が、支持部の端面よりも突出することを特徴とする。
【0007】
【発明の実施の形態】
図1乃至図5は本発明の管継手Xの一実施例を示す各説明図である。まず1は継手本体である。この継手本体1の構造自体には特に特徴はない。すなわち、2はナット形状の中央部で、この中央部2を基準にすると、中央部2に連設する先端部の外周壁には第1螺合部(オネジ)3が形成され、一方、中央部2に連設する後端部には前記第1螺合部3よりもやや大径の第2螺合部(オネジ)4が形成されている。
【0008】
しかして、5は継手本体1の先端部側3に形成された弾性挿入管20用挿入孔で、この挿入孔5を形成する先端部側の内面は、ラッパ形状のフロント傾斜面6となっている。7は挿入孔5に段差状に連通する流体用通路である。この流体用通路7の内径は、挿入孔5のそれよりも小さい。なお、流体用通路7は、先端部の内部から後端部の端面に到るまで形成されている。
【0009】
次に10は継手本体1の第1螺合部3に螺着される締付部材である。この締付部材10は、弾性挿入管20が嵌入する貫通孔11を有する支持部12と、この支持部12に連設し、かつ継手本体1の第1螺合部3に螺合するネジ(メネジ)13を有する筒状部14とから成る。
【0010】
しかして、15は締付部材10を締付た際に、継手本体1のフロント傾斜面6の先端部6aに当接するリヤ傾斜面で、このリヤ傾斜面15は、前述した貫通孔11の孔内周面11aの内縁からネジ(メネジ)13の内端面側に指向して傾斜状に形成されている。この傾斜角度は、継手本体1のラッパ形状フロント傾斜面6よりも大きので、リヤ傾斜面15は、受け面としての機能を果す。したがって、リヤ傾斜面15とフロント傾斜面6とは、その傾斜の違いがある。付言すれば、図3を参照にすると、締付部材10の受け面機能を有するリヤ傾斜面15に対して、該リヤ傾斜面15にその先端部6aが当接可能である継手本体1のラッパ形状フロント傾斜面6は対向している。
【0011】
次に20は締付部材10の支持部12の貫通孔11から継手本体1の挿入孔5の奥まで挿入される弾性挿入管である。弾性挿入管20の一例としては、ナイロンチューブを掲げることができる。したがって、弾性挿入管20は材質自体の弾性力で外拡変位可能である。本実施例では、符合20aを弾性挿入管20の挿入先端部とする。
【0012】
次に22は、挿入先端部20aが締付部材10の支持部12の貫通孔内に弾性挿入管20を介して入り込んでいるパイプ状インサート部材である。このインサート部材22は、本実施例では、弾性挿入管20の挿入先端部(正確には挿入先端面)に当接するフランジ部23と、このフランジ部23に連設し、かつ弾性挿入管20の内径と略同一の外形寸法を有する連設部24と、この連設部24に膨出状態に連通し、かつ弾性挿入管20を外側に膨らませる中間圧接部25と、この中間圧接部25に連設し、かつ外周面が中間圧接部25から次第に先絞り状に形成された挿入先端部26とから成る。なお、図2、図5で示すように、前記中間圧接部25の連設部24(フランジ部23)側の傾斜面は継手本体1のフロント傾斜面6に圧接可能である。
【0013】
本実施例では、図2で示すように、弾性挿入管20の挿入先端部20aにフランジ部23が当たるまでインサート部材22の挿入先端部26を挿入した状態でインサート部材22を継手本体1の挿入孔5に差込み、かつ、締付部材10を締付けた場合には、前記フランジ部23の端面と挿入孔5の奥に不番の間隔(間隙)が存在する。また、インサート部材22の挿入先端部26は前記支持部12の端面12aよも突出している。
【0014】
そして、締付部材10を締付けた場合には、インサート部材22は前記不番の間隔(間隙)が存在するので、該インサート部材22は継手本体1側(挿入孔5の奥)へ摺動することにより、前記不番の間隔(間隙)が小さくなる。なお、締付部材10を締付けた場合には、折り曲げ状態となった弾性挿入管20の挿入先端部20aは、「インサート部材22の前側傾斜面と締付部材10のリヤ傾斜面15」及び「インサート部材22の後側傾斜面と継手本体1のフロント傾斜面6」に2点で挟持状態となる。
【0015】
敷衍すると、図2は締付部材10を途中まで締付た状態の説明図である。この図2から明らかなように、弾性挿入管20の挿入先端部寄りの部位は、インサート部材22の中間圧接部25により、その弾性力に抗して外側に膨らんでいる。そして、外側に膨らんでいる外周面は、継手本体1のラッパ形状フロント傾斜面6により押圧可能な状態に接触している。そこで、締付部材10をさらに締付ると、弾性挿入管20は、インサート部材22の中間圧接部25の湾曲状外周面と継手本体1のラッパ形状フロント傾斜面6の両方にサンドイッチ状に押圧挟着されるので、回転する締付部材10の孔内周面11aの摺動により弾性挿入管20の支持されている部分に周(捩れ)方向の力が作用する。しかしながら、この時弾性挿入管20は、インサート部材22の挿入先端部26の外周面26aと締付部材10の支持部12の孔内周面11aとで面接触状態で挟持されるので、「捩れ防止の効果」が働く。この「捩れ防止の効果」は、締付部材10の孔内周面11aがインサート部材22の挿入先端部26の外周面26aをスムースに滑動することにより達成される。
【0016】
【実施例】
本実施例のインサート部材22の外形は花瓶状であるが、中間圧接部25の形状を、例えば環状に設計変更すると、外観のイメージも変わってくる。しかしながら、外観のイメージが変わっても、インサート部材22は中央部ないし中央部寄りの部位に弾性挿入管の内径よりも膨らみ部分があり、かつ挿入先端部が締付部材10の支持部12の貫通孔11内に弾性挿入管20を介して入り込んでいるパイプ状インサート部材であれば、その形状を任意に設計変更することは可能である。
【0017】
【発明の効果】
以上の説明から明らかなように本発明にあっては、継手本体1と、この継手本体の螺合部に螺着される締付部材10と、先端部20aがこの締付部材の支持部の貫通孔11から継手本体の挿入孔5まで挿入された弾性挿入管20と、この弾性挿入管の前記先端部20aから挿入されると共に前記挿入孔5に差し込まれるパイプ状のインサート部材とから成り、前記継手本体1の先端部側のラッパ形状フロント傾斜面6は、前記締付部材10に形成されたリヤ傾斜面15に傾斜角度が異なるように対向しており、また、前記インサート部材は、弾性挿入管の挿入先端部に当接するフランジ部23と、このフランジ部に連設し、かつ弾性挿入管の内径と略同一の外形寸法を有する連設部24と、この連設部に膨出状態に連通し、かつ弾性挿入管を外側に膨らませる中間圧接部25と、この中間圧接部に連設し、かつ外周面が中間圧接部から次第に先絞り状に形成された挿入先端部26とから成り、さらに、締付部材10を締付ける際には、前記インサート部材の後退動を許容する間隔をフランジ部23の端面の後方に設定し、前記締付部材10を締付けた場合には、折り曲げ状態となった弾性挿入管20の挿入先端部20aは、「インサート部材22の前側傾斜面と締付部材10のリヤ傾斜面15」及び「インサート部材22の後側傾斜面と継手本体1のフロント傾斜面6」に2点で挟持状態となっているので、弾性挿入管を圧着状態で締付ける際に、弾性挿入管の捩れ防止の効果を得ることができる。また、インサート部材はパイプ状に形成された「シンプルな一物品」なので、セッティングを簡単に行なうことができる。したがって、作業効率が良いので、コストの低減化を図ることができる。
【図面の簡単な説明】
図1乃至図5は本発明の一実施例を示す各説明図。
【図1】分解斜視図。
【図2】概略断面図(締付が途中)。
【図3】各部材と関係を示す説明図。
【図4】弾性挿入管にインサート部材を完全に嵌入した状態の説明図。
【図5】概略断面図(締付が完全)。
【符号の説明】
1…継手本体、2…中央部、3…第1螺合部、4…第2螺合部、5…挿入孔、6…フロント傾斜面、6a…先端部、7…通路、10…締付部材、11…貫通孔、11a…孔内周面、12…支持部、12a…端面、13…ネジ、14…筒状部、20…弾性挿入管、20a…挿入先端部、22…インサート部材、23…フランジ部、24…連設部、25…中間圧接部、26…挿入先端部、26a…外周面。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe joint used for piping of petroleum, electric power, chemical plants, and the like, and more particularly to a pipe joint that tightens an elastic insertion pipe inserted into an insertion hole of the joint in a crimped state.
[0002]
[Prior art]
An example of the pipe joint is described in Japanese Patent Publication No. 57-48717. This pipe joint is inserted from a joint body having a threaded portion, a tightening member screwed into the threaded portion of the joint body, and a through hole of a support portion of the tightening member to an insertion hole of the joint body. Formed between the front inclined surface of the joint main body or the front inclined surface of the joint body and the rear inclined surface of the fastening member. And a spherical ring located in the formed gap.
[0003]
In the above configuration, when the tightening member is tightened, the outer peripheral surface of the spherical ring is pressed by both the seal surfaces of the front inclined surface and the rear inclined surface of the joint. As a result, the entire circumference of the inner surface of the hole of the spherical ring is pressed against the outer circumferential surface of the metal insertion tube.
[0004]
However, this joint structure can be applied to a metal insertion tube made of metal, but has a problem that it is difficult to apply to a soft or elastic insertion tube such as a nylon tube. The reason is that the spherical ring is housed in a gap formed between the front inclined surface or the front end portion of the joint body and the rear inclined surface of the tightening member. As the outer wall surface of the ring is pressed against the sealing surface, the entire circumference of the inner surface of the hole of the ring is crimped to the insertion tube, while the portion supported by the support portion of the clamping member of the insertion tube is the circumference of the clamping member. This is because it is twisted by sliding rotation in the direction (this is referred to as “the effect of preventing twisting” here). Then, the appearance of a pipe joint that can solve such problems is expected.
[0005]
[Problems to be solved by the invention]
In view of the problems with the conventional examples described above, the first object, when that tighten in an elastic insertion tube crimped state, has the advantages of preventing twisting of an elastic insertion tube To provide a fitting that can be used. The second purpose is to simplify the structure so that setting can be performed easily (for example, no tools are required).
[0006]
[Means for Solving the Problems]
The pipe joint of the present invention includes a joint body 1, a tightening member 10 screwed into a threaded portion of the joint body, and a distal end portion 20a inserted into the joint body through a through hole 11 of a support portion of the tightening member. an elastic insertion tube 20 inserted to the hole 5, the insertion hole consists of a pipe-shaped insert member which is inserted into the 5, front end portion of the joint body 1 while being inserted from the front end portion 20a of the elastic insertion tube The trumpet-shaped front inclined surface 6 is opposed to the rear inclined surface 15 formed on the tightening member 10 so that the inclination angle is different, and the insert member is in contact with the insertion tip of the elastic insertion tube. A flange portion 23 in contact therewith, a continuous portion 24 connected to the flange portion and having an outer dimension substantially the same as the inner diameter of the elastic insertion tube, and an extended insertion state connected to the continuous portion. Intermediate press-contact part 2 that inflates the outside When this communication is set to an intermediate pressure section, and the outer peripheral surface is made gradually from the insertion tip 26 for previously formed stop-like from the intermediate pressure section, and further, when tightening the fastening member 10, the insert member Is set to the rear of the end face of the flange portion 23, and the insertion distal end portion 20 a of the elastic insertion tube 20 in the bent state is “the front inclined surface of the insert member 22 and the rear of the fastening member 10. The inclined surface 15 ”and“ the rear inclined surface of the insert member 22 and the front inclined surface 6 of the joint body 1 ”are clamped at two points . In addition, the insertion tip of the insert member is the end surface of the support portion. It is characterized by protruding more .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 are explanatory views showing an embodiment of the pipe joint X of the present invention. First, 1 is a joint body. There is no particular feature in the structure of the joint body 1 itself. That is, reference numeral 2 denotes a nut-shaped central portion. When the central portion 2 is used as a reference, a first threaded portion (male thread) 3 is formed on the outer peripheral wall of the distal end portion continuous with the central portion 2, while A second threaded portion (male thread) 4 having a diameter slightly larger than that of the first threaded portion 3 is formed at the rear end portion continuous with the portion 2.
[0008]
Therefore, 5 is an insertion hole for the elastic insertion tube 20 formed on the distal end side 3 of the joint body 1, and the inner surface on the distal end side forming the insertion hole 5 is a trumpet-shaped front inclined surface 6. Yes. A fluid passage 7 communicates with the insertion hole 5 in a stepped manner . The inner diameter of the fluid passage 7 is smaller than that of the insertion hole 5. The fluid passage 7 is formed from the inside of the front end portion to the end face of the rear end portion.
[0009]
Next, 10 is a fastening member that is screwed into the first screwing portion 3 of the joint body 1. The tightening member 10 includes a support portion 12 having a through-hole 11 into which the elastic insertion tube 20 is fitted, and a screw (continuous to the support portion 12 and screwed into the first screwing portion 3 of the joint body 1. And a cylindrical portion 14 having a female thread 13.
[0010]
Thus, 15 when the tighten the clamping member 10, with rear inclined surface in contact with the front end portion 6a of the front inclined face 6 of the joint main body 1, the rear inclined surface 15, the through hole 11 described above The hole is formed in an inclined shape from the inner edge of the hole inner peripheral surface 11 a toward the inner end surface of the screw (female screw) 13. The angle of inclination, since not greater than the trumpet-shaped front inclined face 6 of the joint main body 1, the rear inclined surface 15 serves as a receiving surface. Therefore, there is a difference in inclination between the rear inclined surface 15 and the front inclined surface 6. In other words, referring to FIG. 3, the trumpet of the joint main body 1 whose front end portion 6 a can contact the rear inclined surface 15 with respect to the rear inclined surface 15 having the receiving surface function of the fastening member 10. The shape front inclined surfaces 6 are opposed to each other.
[0011]
Next, 20 is an elastic insertion tube inserted from the through hole 11 of the support portion 12 of the tightening member 10 to the back of the insertion hole 5 of the joint body 1. An example of the elastic insertion tube 20 is a nylon tube. Accordingly, the elastic insertion tube 20 can be displaced outwardly by the elastic force of the material itself. In this embodiment, the reference numeral 20 a is the insertion tip of the elastic insertion tube 20.
[0012]
Next, reference numeral 22 denotes a pipe-shaped insert member in which the insertion tip portion 20 a enters the through hole of the support portion 12 of the tightening member 10 via the elastic insertion tube 20. In this embodiment, the insert member 22 is provided with a flange portion 23 that abuts on the insertion tip portion (more precisely, the insertion tip surface) of the elastic insertion tube 20, and is connected to the flange portion 23. A connecting portion 24 having an outer dimension substantially the same as the inner diameter, an intermediate press-connecting portion 25 communicating with the connecting portion 24 in a bulging state and inflating the elastic insertion tube 20 outward, and the intermediate press-connecting portion 25 The insertion end portion 26 is formed in a continuous manner and has an outer peripheral surface gradually tapered from the intermediate pressure contact portion 25. As shown in FIGS. 2 and 5, the inclined surface on the side of the connecting portion 24 (flange portion 23) of the intermediate pressure contact portion 25 can be pressure-contacted with the front inclined surface 6 of the joint body 1.
[0013]
In this embodiment, as shown in FIG. 2, the insert member 22 is inserted into the joint body 1 with the insertion tip portion 26 of the insert member 22 inserted until the flange portion 23 hits the insertion tip portion 20 a of the elastic insertion tube 20. When inserted into the hole 5 and the tightening member 10 is tightened, an unnumbered interval (gap) exists between the end face of the flange portion 23 and the back of the insertion hole 5. Furthermore, the insertion tip 26 of the insert member 22 is also projected Ri by the end surface 12a of the support portion 12.
[0014]
When the tightening member 10 is tightened, the insert member 22 has the unnumbered interval (gap), and therefore the insert member 22 slides to the joint body 1 side (back of the insertion hole 5). As a result, the unnumbered interval (gap) is reduced. When the tightening member 10 is tightened, the insertion distal end portion 20a of the elastic insertion tube 20 in a bent state is “the front inclined surface of the insert member 22 and the rear inclined surface 15 of the tightening member 10” and “ The insert member 22 is sandwiched between the rear inclined surface and the front inclined surface 6 ”of the joint body 1 at two points .
[0015]
When Fuen, FIG. 2 is an explanatory view of a state tighten halfway clamping member 10. As is apparent from FIG. 2, the portion of the elastic insertion tube 20 near the insertion tip is bulged outwardly against the elastic force by the intermediate pressure contact portion 25 of the insert member 22. The outer peripheral surface bulging outward is in contact with the trumpet-shaped front inclined surface 6 of the joint body 1 so as to be pressed. Therefore, when that Installing further tighten the fastening member 10, an elastic insertion tube 20 is sandwiched to both trumpet shaped front inclined face 6 of the curved outer peripheral surface and the fitting body 1 of the intermediate contact portion 25 of the insert member 22 Since it is pressed and clamped, a force in the circumferential (twisting) direction acts on the portion where the elastic insertion tube 20 is supported by sliding of the inner circumferential surface 11a of the rotating fastening member 10. However, at this time, the elastic insertion tube 20 is sandwiched in a surface contact state between the outer peripheral surface 26a of the insertion tip portion 26 of the insert member 22 and the hole inner peripheral surface 11a of the support portion 12 of the tightening member 10. Preventive effect "works. This “effect of preventing torsion” is achieved when the inner peripheral surface 11a of the tightening member 10 smoothly slides on the outer peripheral surface 26a of the insertion tip portion 26 of the insert member 22.
[0016]
【Example】
Although the outer shape of the insert member 22 of the present embodiment is vase-like, when the design of the intermediate pressure contact portion 25 is changed to, for example, an annular shape, the appearance image also changes. However, even if the image of the appearance changes, the insert member 22 has a bulging portion at the central portion or a portion closer to the central portion than the inner diameter of the elastic insertion tube, and the insertion tip portion penetrates the support portion 12 of the tightening member 10. As long as it is a pipe-like insert member that enters the hole 11 via the elastic insertion tube 20, the design of the shape can be arbitrarily changed.
[0017]
【The invention's effect】
As is clear from the above description, in the present invention, the joint body 1, the fastening member 10 to be screwed into the threaded portion of the joint body, and the distal end portion 20a are the support portions of the fastening member. An elastic insertion tube 20 inserted from the through hole 11 to the insertion hole 5 of the joint body, and a pipe-shaped insert member inserted from the distal end portion 20a of the elastic insertion tube and inserted into the insertion hole 5 , The trumpet-shaped front inclined surface 6 on the distal end side of the joint body 1 is opposed to the rear inclined surface 15 formed on the tightening member 10 so as to have different inclination angles, and the insert member is elastic. A flange portion 23 that comes into contact with the insertion tip of the insertion tube, a continuous portion 24 that is connected to the flange portion and has substantially the same outer dimensions as the inner diameter of the elastic insertion tube, and a bulging state in the continuous portion And an elastic insertion tube An intermediate pressure section 25 to inflate on the side, the communication is set to an intermediate pressure section, and the outer peripheral surface is made gradually from the insertion tip 26 for previously formed stop-like from the intermediate pressure portion, further, the clamping member 10 When tightening, the interval allowing the backward movement of the insert member is set behind the end face of the flange portion 23, and when the tightening member 10 is tightened, the insertion of the elastic insertion tube 20 in a bent state is inserted. The distal end portion 20a is sandwiched between “the front inclined surface of the insert member 22 and the rear inclined surface 15 of the fastening member 10” and “the rear inclined surface of the insert member 22 and the front inclined surface 6 of the joint body 1” at two points. Therefore, when the elastic insertion tube is tightened in a pressure-bonded state, an effect of preventing twisting of the elastic insertion tube can be obtained. Moreover, since the insert member is a “simple one article” formed in a pipe shape, setting can be easily performed. Accordingly, the work efficiency is good, and the cost can be reduced.
[Brief description of the drawings]
1 to 5 are explanatory views showing an embodiment of the present invention.
FIG. 1 is an exploded perspective view.
FIG. 2 is a schematic sectional view (during tightening).
FIG. 3 is an explanatory view showing a relationship with each member.
FIG. 4 is an explanatory view showing a state in which the insert member is completely fitted into the elastic insertion tube.
FIG. 5 is a schematic cross-sectional view (complete tightening).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Joint main body, 2 ... Center part, 3 ... 1st screwing part, 4 ... 2nd screwing part, 5 ... Insertion hole, 6 ... Front inclined surface, 6a ... Tip part, 7 ... Passage, 10 ... Tightening 11: through hole, 11a: inner peripheral surface of the hole, 12 ... support portion, 12a ... end face, 13 ... screw, 14 ... cylindrical portion, 20 ... elastic insertion tube, 20a ... insertion tip, 22 ... insert member, 23 ... Flange part, 24 ... Connecting part, 25 ... Intermediate pressure contact part, 26 ... Insertion tip part, 26a ... Outer peripheral surface.

Claims (1)

継手本体1と、この継手本体の螺合部に螺着される締付部材10と、先端部20aがこの締付部材の支持部の貫通孔11から継手本体の挿入孔5まで挿入された弾性挿入管20と、この弾性挿入管の前記先端部20aから挿入されると共に前記挿入孔5に差し込まれるパイプ状のインサート部材とから成り、前記継手本体1の先端部側のラッパ形状フロント傾斜面6は、前記締付部材10に形成されたリヤ傾斜面15に傾斜角度が異なるように対向しており、また、前記インサート部材は、弾性挿入管の挿入先端部に当接するフランジ部23と、このフランジ部に連設し、かつ弾性挿入管の内径と略同一の外形寸法を有する連設部24と、この連設部に膨出状態に連通し、かつ弾性挿入管を外側に膨らませる中間圧接部25と、この中間圧接部に連設し、かつ外周面が中間圧接部から次第に先絞り状に形成された挿入先端部26とから成り、さらに、締付部材10を締付ける際には、前記インサート部材の後退動を許容する間隔をフランジ部23の端面の後方に設定し、折り曲げ状態となった弾性挿入管20の挿入先端部20aは、「インサート部材22の前側傾斜面と締付部材10のリヤ傾斜面15」及び「インサート部材22の後側傾斜面と継手本体1のフロント傾斜面6」に2点で挟持状態となっており、加えて、インサート部材の挿入先端部が、支持部の端面よりも突出することを特徴とする管継手。The joint body 1, the fastening member 10 screwed into the threaded portion of the joint body, and the tip 20 a are elastically inserted from the through hole 11 of the support portion of the fastening member to the insertion hole 5 of the joint body. The insertion tube 20 and a pipe-shaped insert member inserted from the distal end portion 20a of the elastic insertion tube and inserted into the insertion hole 5, and a trumpet-shaped front inclined surface 6 on the distal end side of the joint body 1. Is opposed to the rear inclined surface 15 formed on the tightening member 10 so that the inclination angle is different, and the insert member includes a flange portion 23 abutting on the insertion tip portion of the elastic insertion tube, A continuous portion 24 connected to the flange portion and having substantially the same outer dimension as the inner diameter of the elastic insertion tube, and an intermediate pressure welding that communicates with the continuous portion in an expanded state and expands the elastic insertion tube outward. Part 25 and this intermediate pressure welding And continuously to, and the outer peripheral surface is made from insertion tip 26 for being progressively formed on the tapered shape from the intermediate pressure section, and further, when tightening the clamping member 10 allows the backward movement of the insert member The insertion distal end portion 20a of the elastic insertion tube 20 which is set to the rear side of the end surface of the flange portion 23 and is in a bent state has “the front inclined surface of the insert member 22 and the rear inclined surface 15 of the fastening member 10” and “ has a clamping state by the two-dot on the side inclined surface and the front inclined surface 6 of the joint main body 1 "after the insert member 22, in addition, the insertion tip of the insert member includes a projecting child than the end face of the support portion Pipe fittings characterized by
JP2001314657A 2001-10-12 2001-10-12 Pipe fitting Expired - Lifetime JP3868252B2 (en)

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JP2001314657A JP3868252B2 (en) 2001-10-12 2001-10-12 Pipe fitting

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Application Number Priority Date Filing Date Title
JP2001314657A JP3868252B2 (en) 2001-10-12 2001-10-12 Pipe fitting

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JP2003120878A JP2003120878A (en) 2003-04-23
JP3868252B2 true JP3868252B2 (en) 2007-01-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001314657A Expired - Lifetime JP3868252B2 (en) 2001-10-12 2001-10-12 Pipe fitting

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Publication number Priority date Publication date Assignee Title
JP7529542B2 (en) * 2020-11-17 2024-08-06 株式会社イノアック住環境 Pipe Fittings

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