Nothing Special   »   [go: up one dir, main page]

JP2019168051A - Pipe joint - Google Patents

Pipe joint Download PDF

Info

Publication number
JP2019168051A
JP2019168051A JP2018056712A JP2018056712A JP2019168051A JP 2019168051 A JP2019168051 A JP 2019168051A JP 2018056712 A JP2018056712 A JP 2018056712A JP 2018056712 A JP2018056712 A JP 2018056712A JP 2019168051 A JP2019168051 A JP 2019168051A
Authority
JP
Japan
Prior art keywords
pipe
joint body
pipe joint
joint
holder member
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.)
Pending
Application number
JP2018056712A
Other languages
Japanese (ja)
Inventor
勝美 小野田
Katsumi Onoda
勝美 小野田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AOI Co Ltd
Original Assignee
AOI Co Ltd
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.)
Filing date
Publication date
Application filed by AOI Co Ltd filed Critical AOI Co Ltd
Priority to JP2018056712A priority Critical patent/JP2019168051A/en
Publication of JP2019168051A publication Critical patent/JP2019168051A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Joints With Sleeves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

To provide a pipe joint capable of preventing dust from occurring.SOLUTION: A pipe joint 1 comprises: a cylindrical joint body 2; a ring-shaped holder member 5 having an insertion part 51 inserted into the joint body 2 and an exposed part 52 exposed from the joint body 2, and capable of being reduced in diameter; and a tightening cylinder 6 externally fitted to the joint body 2, and having a tapered contact surface 61 that abuts the exposed part 52 to reduce the diameter of the exposed part 52. On an outer wall of the joint body 2, a protrusion part 27 is provided. On an outer wall of the tightening cylinder 6, an engagement path 62 is provided that engages with the protrusion part 27 and guides the protrusion part 27 in the direction of reducing the diameter of the exposed part 52.SELECTED DRAWING: Figure 1

Description

本発明は、配管を接続するための管継手に関する。   The present invention relates to a pipe joint for connecting pipes.

従来、このような分野の技術として、例えば下記特許文献1に記載されるように、円筒状の継手本体と該継手本体に内嵌される内筒とを備える管継手が知られている。この特許文献1に記載の管継手では、内筒に径方向の変位可能な保持片が形成され、保持片の外周及び継手本体の内周にテーパ状の締め付け部がそれぞれ形成されている。そして、保持片に食い込み突起が形成され、該食い込み突起を配管の外壁に食い込ませることにより、配管の抜けを防止する。   Conventionally, as a technique in such a field, for example, as described in Patent Document 1 below, a pipe joint including a cylindrical joint body and an inner cylinder fitted into the joint body is known. In the pipe joint described in Patent Document 1, a radially displaceable holding piece is formed on the inner cylinder, and tapered tightening portions are formed on the outer periphery of the holding piece and the inner periphery of the joint body, respectively. Then, a biting protrusion is formed on the holding piece, and the biting protrusion is bitten into the outer wall of the pipe, thereby preventing the pipe from coming off.

特開平9−292070号公報JP-A-9-292070

しかし、上述の管継手では、配管を内筒の内部に挿入して管継手に取り付けるとき又は管継手から配管を取り外すときに、配管の外壁で食い込み突起を押し倒しながら配管の挿入又は抜き出しを行う必要がある。このため、配管の外壁が食い込み突起によって削られ、発塵の問題が生じている。発塵の問題が起きると、塵埃等は該管継手を流れる液体に沿って供給される側に流れてしまい、液体の汚れの原因になる。   However, in the above-mentioned pipe joint, when the pipe is inserted into the inner cylinder and attached to the pipe joint or when the pipe is removed from the pipe joint, it is necessary to insert or extract the pipe while pushing down the biting protrusion on the outer wall of the pipe. There is. For this reason, the outer wall of the piping is scraped by the biting protrusion, which causes a problem of dust generation. When a problem of dust generation occurs, dust or the like flows to the side supplied along the liquid flowing through the pipe joint, causing the liquid to become dirty.

本発明は、このような技術課題を解決するためになされたものであって、発塵を防止することができる管継手を提供することを目的とする。   This invention is made | formed in order to solve such a technical subject, Comprising: It aims at providing the pipe joint which can prevent dust generation.

本発明に係る管継手は、配管を接続するための管継手であって、筒状の継手本体と、前記継手本体の内部に挿入される挿入部と前記継手本体から露出する露出部とを有し、縮径変形可能なリング状のホルダ部材と、前記継手本体に外嵌され、内部に前記ホルダ部材の前記露出部と当接して該露出部を縮径させるテーパ状の当接面を有する締め付け筒体と、を備え、前記継手本体の外壁には、突起部が設けられ、前記締め付け筒体の外壁には、前記継手本体の前記突起部と係合するとともに前記突起部を前記ホルダ部材の前記露出部を縮径させる方向に案内する係合路が設けられていることを特徴としている。   A pipe joint according to the present invention is a pipe joint for connecting pipes, and includes a tubular joint body, an insertion part inserted into the joint body, and an exposed part exposed from the joint body. And a ring-shaped holder member that can be deformed to a reduced diameter, and a taper-shaped contact surface that is fitted on the joint body and contacts the exposed portion of the holder member to reduce the diameter of the exposed portion. A tightening cylinder, and a protrusion is provided on the outer wall of the joint body. The outer wall of the tightening cylinder is engaged with the protrusion of the joint body and the protrusion is connected to the holder member. An engagement path is provided for guiding the exposed portion in the direction of reducing the diameter.

本発明に係る管継手では、継手本体の外壁に突起部が設けられ、締め付け筒体の外壁に突起部と係合するとともに突起部を露出部を縮径させる方向に案内する係合路が設けられているので、継手本体と締め付け筒体との協働で、ホルダ部材の露出部を縮径させたり、縮径状態を解除したりすることが可能となる。このため、配管を管継手に取り付けるとき或いは管継手から取り外すときに、露出部の縮径状態を解除することにより、露出部と接触せずに配管の挿入又は抜き出しを行うことができる。このようにすれば、配管の外壁が削られることはないので、発塵を防止することができる。   In the pipe joint according to the present invention, a protrusion is provided on the outer wall of the joint body, and an engagement path is provided on the outer wall of the tightening cylinder to engage the protrusion and guide the protrusion in the direction of reducing the diameter of the exposed portion. Therefore, it is possible to reduce the diameter of the exposed portion of the holder member or to cancel the reduced diameter state by the cooperation of the joint body and the tightening cylinder. For this reason, when the pipe is attached to the pipe joint or removed from the pipe joint, the reduced diameter state of the exposed part is released, so that the pipe can be inserted or extracted without contacting the exposed part. In this way, since the outer wall of the pipe is not scraped, dust generation can be prevented.

本発明に係る管継手において、前記係合路は、前記締め付け筒体の軸方向に対して傾斜するとともに前記締め付け筒体の周方向に延びる第1係合路と、前記軸方向に直交するとともに前記周方向に延びる第2係合路と、を少なくとも有することが好ましい。このようにすれば、ホルダ部材の露出部を縮径させたり、露出部の縮径状態を解除したりする作業を確実に行える。   In the pipe joint according to the present invention, the engagement path is inclined with respect to the axial direction of the clamping cylinder and extends in the circumferential direction of the clamping cylinder, and is orthogonal to the axial direction. It is preferable to have at least a second engagement path extending in the circumferential direction. In this way, the operation of reducing the diameter of the exposed portion of the holder member or releasing the reduced diameter state of the exposed portion can be performed reliably.

本発明に係る管継手において、前記係合路の両端は、前記締め付け筒体の外壁において塞がれていることが好ましい。このようにすれば、配管の取付及び取り外しの際に、締め付け筒体を継手本体から外す必要がないので、部品の紛失等を防止することができる。   The pipe joint which concerns on this invention WHEREIN: It is preferable that the both ends of the said engagement path are block | closed in the outer wall of the said clamping cylinder. In this way, it is not necessary to remove the tightening cylinder from the joint body when installing and removing the pipe, so that loss of parts and the like can be prevented.

また、本発明に係る管継手において、前記ホルダ部材の前記露出部には、前記配管の外壁に食い込む食い込み突起が設けられていることが好ましい。このようにすれば、食い込み突起を配管の外壁に食い込ませることで、配管の抜けを防止することができる。   Moreover, the pipe joint which concerns on this invention WHEREIN: It is preferable that the biting protrusion which bites into the outer wall of the said piping is provided in the said exposed part of the said holder member. In this way, it is possible to prevent the pipe from coming off by causing the biting protrusion to bite into the outer wall of the pipe.

また、本発明に係る管継手において、前記ホルダ部材には、該ホルダ部材の軸方向に沿って延びるスリットが複数設けられ、複数の前記スリットは、前記挿入部側及び前記露出部側から交互に形成されていることが好ましい。このようにすれば、露出部を容易に縮径させたり、縮径状態を容易に解除したりすることができる。   In the pipe joint according to the present invention, the holder member is provided with a plurality of slits extending along the axial direction of the holder member, and the plurality of slits are alternately arranged from the insertion portion side and the exposed portion side. Preferably it is formed. In this way, it is possible to easily reduce the diameter of the exposed portion or to cancel the reduced diameter state.

また、本発明に係る管継手において、前記ホルダ部材の前記挿入部は、該挿入部に外嵌された筒状のガイド部材を介して前記継手本体の内部に挿入され、前記ホルダ部材の前記露出部は、前記ガイド部材から露出することが好ましい。   Further, in the pipe joint according to the present invention, the insertion portion of the holder member is inserted into the joint main body via a cylindrical guide member externally fitted to the insertion portion, and the exposure of the holder member is performed. The part is preferably exposed from the guide member.

更に、本発明に係る管継手において、前記継手本体の内部には、少なくとも前記配管の先端側面の一部と密着するシール部材が設けられ、前記シール部材は、前記ガイド部材によって前記継手本体の内部に設けられた段差部に押し付けられていることが好ましい。このようにすれば、シール部材が常にガイド部材に圧縮されるので、安定したシール性及びサニタリ性を確保することができる。   Furthermore, in the pipe joint according to the present invention, a seal member that is in close contact with at least a part of the front end side surface of the pipe is provided inside the joint body, and the seal member is disposed inside the joint body by the guide member. It is preferable to be pressed against the stepped portion provided in the. In this way, since the seal member is always compressed by the guide member, stable sealing performance and sanitary performance can be ensured.

更に、本発明に係る管継手において、前記シール部材は、前記配管の先端面と当接する端面シール部と、前記配管の先端側面の一部と当接する側面シール部とを有することが好ましい。このようにすれば、配管の端面から側面のシール部材の配置場所までの領域への液体侵入及び液体の滞留を抑制することができるので、管継手のサニタリ性を向上することができる。   Furthermore, in the pipe joint according to the present invention, it is preferable that the seal member has an end surface seal portion that comes into contact with the front end surface of the pipe and a side surface seal portion that comes into contact with a part of the front end side surface of the pipe. If it does in this way, since the penetration | invasion of the liquid to the area | region from the end surface of piping to the arrangement | positioning location of the sealing member of a side surface can be suppressed, the sanitary property of a pipe joint can be improved.

本発明によれば、発塵を防止することができる。   According to the present invention, dust generation can be prevented.

第1実施形態に係る管継手を示す分解斜視図である。It is a disassembled perspective view which shows the pipe joint which concerns on 1st Embodiment. 第1実施形態に係る管継手を示す正面図である。It is a front view showing a pipe joint concerning a 1st embodiment. 第1実施形態に係る管継手を示す断面図である。It is sectional drawing which shows the pipe joint which concerns on 1st Embodiment. 締め付け筒体を示す斜視図である。It is a perspective view which shows a clamping cylinder. 樹脂管挿入前の管継手を示す断面図である。It is sectional drawing which shows the pipe joint before resin pipe insertion. 管継手に樹脂管を挿入した状態を示す断面図である。It is sectional drawing which shows the state which inserted the resin pipe into the pipe joint. 締め付け筒体の回転で樹脂管に食い込む状態を示す断面図である。It is sectional drawing which shows the state which bites into a resin pipe by rotation of a clamping cylinder. 第2実施形態に係る管継手を示す断面図である。It is sectional drawing which shows the pipe joint which concerns on 2nd Embodiment. 第3実施形態に係る管継手を示す断面図である。It is sectional drawing which shows the pipe joint which concerns on 3rd Embodiment.

<第1実施形態>
以下、図面を参照して本発明に係る管継手の実施形態について説明する。図1は第1実施形態に係る管継手を示す分解斜視図であり、図2は第1実施形態に係る管継手を示す正面図であり、図3は第1実施形態に係る管継手を示す断面図である。
<First Embodiment>
Hereinafter, embodiments of a pipe joint according to the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a pipe joint according to the first embodiment, FIG. 2 is a front view showing the pipe joint according to the first embodiment, and FIG. 3 shows the pipe joint according to the first embodiment. It is sectional drawing.

本実施形態の管継手1は、例えば飲料や薬液などの液体を搬送する樹脂管(配管)10を接続するために用いられるものであって、円筒状の継手本体2と、継手本体2の内部に挿入されるシール部材3及びガイド部材4と、一部が継手本体2の内部に挿入されて他の部分が継手本体2から露出するホルダ部材5と、シール部材3、ガイド部材4及びホルダ部材5を継手本体2の内部に閉じ込めるように継手本体2と外嵌される締め付け筒体6と、を備えている。継手本体2、シール部材3、ガイド部材4、ホルダ部材5及び締め付け筒体6は略同軸上に配置された状態で組み立てられているので、これらの部品の中心軸が略重なる。従って、以下の説明では、各部品の軸方向をそれぞれ言及せずに、一律「軸L方向」とする。   The pipe joint 1 according to the present embodiment is used for connecting a resin pipe (pipe) 10 for transporting a liquid such as a beverage or a chemical solution, for example, and includes a cylindrical joint body 2 and an inside of the joint body 2. A seal member 3 and a guide member 4 inserted into the holder body 5, a part of the holder member 5 inserted into the joint body 2 and the other part exposed from the joint body 2, a seal member 3, the guide member 4 and the holder member And a tightening cylinder 6 fitted to the joint body 2 so as to confine 5 inside the joint body 2. Since the joint main body 2, the seal member 3, the guide member 4, the holder member 5, and the tightening cylinder 6 are assembled in a state of being arranged substantially coaxially, the central axes of these components substantially overlap. Therefore, in the following description, the axial direction of each component is not referred to, but is uniformly referred to as “axis L direction”.

継手本体2は、例えばポリプロピレン等の樹脂材料により、内部に段付き中空部を有するように形成されている。図3に示すように、継手本体2の中空部は、直径が相対的に小さく形成された小径中空部21と、直径が相対的に大きく形成された大径中空部23と、小径中空部21及び大径中空部23を連通する中径中空部22とからなる。そして、小径中空部21と中径中空部22との間には第1段差部24、中径中空部22と大径中空部23との間には第2段差部25がそれぞれ形成されている。   The joint body 2 is formed of a resin material such as polypropylene so as to have a stepped hollow portion therein. As shown in FIG. 3, the hollow portion of the joint body 2 includes a small-diameter hollow portion 21 formed with a relatively small diameter, a large-diameter hollow portion 23 formed with a relatively large diameter, and a small-diameter hollow portion 21. And a medium-diameter hollow portion 22 that communicates with the large-diameter hollow portion 23. A first step portion 24 is formed between the small-diameter hollow portion 21 and the medium-diameter hollow portion 22, and a second step portion 25 is formed between the medium-diameter hollow portion 22 and the large-diameter hollow portion 23. .

また、継手本体2の外壁において、小径中空部21に対応する部分にはネジ部26が周設され、大径中空部23に対応する部分には突起部27が2つ設けられている。2つの突起部27は、継手本体2の外壁から外方に突出した円柱状を呈し、継手本体2の周方向に沿って180°の間隔で配置されている。   Further, on the outer wall of the joint body 2, a screw portion 26 is provided around a portion corresponding to the small-diameter hollow portion 21, and two protrusions 27 are provided on a portion corresponding to the large-diameter hollow portion 23. The two protrusions 27 have a cylindrical shape protruding outward from the outer wall of the joint body 2, and are arranged at intervals of 180 ° along the circumferential direction of the joint body 2.

シール部材3は、例えばゴム材料によってリング状に形成されたパッキンである。このシール部材3は、外側に位置して比較的に厚く形成された肉厚部31と、内側に位置して比較的に薄く形成された肉薄部32とで断面略V字状となっている。図3に示すように、シール部材3は、V字状の開口が小径中空部21側に向くように継手本体2の大径中空部23に挿入され、上述の第2段差部25と当接している。このとき、シール部材3の肉厚部31は第2段差部25と当接するが、肉薄部32は第2段差部25と当接せずに、フリーの状態になる。そして、後述する樹脂管10が挿入された状態では、該肉薄部32が樹脂管10の外壁と好適に密着する(図6及び図7参照)。   The seal member 3 is a packing formed in a ring shape with a rubber material, for example. The sealing member 3 has a substantially V-shaped cross section with a thick portion 31 formed on the outside and formed relatively thick, and a thin portion 32 formed on the inside and formed relatively thin. . As shown in FIG. 3, the seal member 3 is inserted into the large-diameter hollow portion 23 of the joint body 2 so that the V-shaped opening faces the small-diameter hollow portion 21, and comes into contact with the second step portion 25 described above. ing. At this time, the thick portion 31 of the seal member 3 contacts the second step portion 25, but the thin portion 32 does not contact the second step portion 25 and is in a free state. And in the state where the resin pipe 10 mentioned later is inserted, this thin part 32 closely_contact | adheres with the outer wall of the resin pipe 10 suitably (refer FIG.6 and FIG.7).

ガイド部材4は、例えばポリプロピレン等の樹脂材料によって略円筒状に形成されている。このガイド部材4は、継手本体2の大径中空部23に挿入可能な円筒部41と、該円筒部41と連結されて径方向の外側に突出する円環状の鍔部42とを有する。鍔部42は、円筒部41の大径中空部23への挿入深さを規制するように、継手本体2の大径中空部23の端面と当接可能に形成されている。また、円筒部41の内部には、ホルダ部材5の円筒部41への挿入深さを規制するための段差部43が設けられている。   The guide member 4 is formed in a substantially cylindrical shape by a resin material such as polypropylene. The guide member 4 includes a cylindrical portion 41 that can be inserted into the large-diameter hollow portion 23 of the joint body 2 and an annular flange portion 42 that is connected to the cylindrical portion 41 and projects outward in the radial direction. The flange portion 42 is formed so as to be able to contact the end surface of the large-diameter hollow portion 23 of the joint body 2 so as to regulate the insertion depth of the cylindrical portion 41 into the large-diameter hollow portion 23. Further, a stepped portion 43 for restricting the insertion depth of the holder member 5 into the cylindrical portion 41 is provided inside the cylindrical portion 41.

ホルダ部材5は、例えばポリエーテルエーテルケトン等の樹脂材料によってリング状に形成されている。このホルダ部材5は、比較的に小さく形成されてガイド部材4の円筒部41に挿入可能な挿入部51と、比較的に大きく形成されて円筒部41から露出する露出部52とを有する。そして、露出部52の内側には、樹脂管10の外壁に食い込む食い込み突起53が複数設けられている。また、このホルダ部材5は、縮径変形できるように軸L方向に延びるスリット54が複数設けられている。これらの複数のスリット54は、挿入部51側及び露出部52側から交互に形成されている。   The holder member 5 is formed in a ring shape from a resin material such as polyether ether ketone. The holder member 5 includes an insertion portion 51 that is formed to be relatively small and can be inserted into the cylindrical portion 41 of the guide member 4, and an exposed portion 52 that is formed to be relatively large and is exposed from the cylindrical portion 41. A plurality of biting protrusions 53 that bite into the outer wall of the resin tube 10 are provided inside the exposed portion 52. Further, the holder member 5 is provided with a plurality of slits 54 extending in the axis L direction so that the diameter of the holder member 5 can be reduced. The plurality of slits 54 are alternately formed from the insertion portion 51 side and the exposed portion 52 side.

このように構成されたホルダ部材5は、挿入部51に外嵌された上記ガイド部材4を介して継手本体2の大径中空部23に挿入され、且つ露出部52が大径中空部23及びガイド部材4から露出した状態で、継手本体2に取り付けられている。   The holder member 5 configured as described above is inserted into the large-diameter hollow portion 23 of the joint body 2 via the guide member 4 fitted on the insertion portion 51, and the exposed portion 52 is the large-diameter hollow portion 23 and In a state exposed from the guide member 4, the joint body 2 is attached.

図4は締め付け筒体を示す斜視図である。締め付け筒体6は、継手本体2と係合可能と形成されており、継手本体2との協働でホルダ部材5の露出部52を締め付けて該露出部52を縮径させる。この締め付け筒体6は、例えばポリプロピレン等の樹脂材料によって略円筒状に形成されている。締め付け筒体6の内部には、ホルダ部材5の露出部52と当接して該露出部52を縮径させるテーパ状の当接面61が設けられている。当接面61は、ホルダ部材5側に向かって上がるように傾斜しており、露出部52の外側端面と当接する(図3参照)。   FIG. 4 is a perspective view showing a tightening cylinder. The fastening cylinder 6 is formed so as to be engageable with the joint body 2, and tightens the exposed portion 52 of the holder member 5 in cooperation with the joint body 2 to reduce the diameter of the exposed portion 52. The fastening cylinder 6 is formed in a substantially cylindrical shape by a resin material such as polypropylene. Inside the tightening cylinder 6, a tapered contact surface 61 is provided that contacts the exposed portion 52 of the holder member 5 and reduces the diameter of the exposed portion 52. The contact surface 61 is inclined so as to rise toward the holder member 5 and contacts the outer end surface of the exposed portion 52 (see FIG. 3).

また、締め付け筒体6の外壁には、該外壁を貫通する経路からなり、継手本体2における2つの突起部27と係合する係合路62が2つ設けられている。これらの2つの係合路62は、上述した2つの突起部27に対して1対1で配置されており、突起部27をホルダ部材5の露出部52を縮径させる方向に案内するように形成されている。具体的には、各係合路62は、軸L方向に対して傾斜するとともに締め付け筒体6の周方向に延びる第1係合路621と、第1係合路621と連通し、軸L方向に直交するとともに周方向に延びる第2係合路622とを有する。   Further, two engagement paths 62 are provided on the outer wall of the tightening cylinder 6, which are paths that penetrate the outer wall and engage with the two protrusions 27 in the joint body 2. These two engagement paths 62 are arranged one-to-one with respect to the two protrusions 27 described above, and guide the protrusions 27 in the direction of reducing the diameter of the exposed part 52 of the holder member 5. Is formed. Specifically, each engagement path 62 is inclined with respect to the direction of the axis L and communicates with the first engagement path 621 extending in the circumferential direction of the tightening cylinder 6 and the first engagement path 621, and the axis L And a second engagement path 622 extending in the circumferential direction and orthogonal to the direction.

第1係合路621は、当接面61をホルダ部材5の露出部52の外側端面と当接させて、露出部52に設けられた食い込み突起53を徐々に樹脂管10の外壁に食い込ませるための役割を果たす。一方、第2係合路622は、当接面61を露出部52の外側端面と当接させた状態を維持し、すなわち食い込み突起53を樹脂管10の外壁に食い込ませる状態を保つ役割を果たす。そして、締め付け筒体6の周方向における係合路62の長さは、約60°の範囲と設定されている。   The first engagement path 621 causes the contact surface 61 to contact the outer end surface of the exposed portion 52 of the holder member 5 so that the biting protrusion 53 provided on the exposed portion 52 gradually bites into the outer wall of the resin tube 10. To play a role. On the other hand, the second engagement path 622 maintains the state in which the contact surface 61 is in contact with the outer end surface of the exposed portion 52, that is, maintains the state in which the biting protrusion 53 is bitten into the outer wall of the resin tube 10. . The length of the engagement path 62 in the circumferential direction of the tightening cylinder 6 is set to a range of about 60 °.

係合路62の両端は、締め付け筒体6の外壁において塞がれている。具体的には、係合路62の一端となる第1係合路621の端部は、継手本体2側に延設され、外方に開放されずに締め付け筒体6の外壁に留まっている。係合路62の他端となる第2係合路622の端部も、外方に開放されておらず、締め付け筒体6の外壁に留まっている。   Both ends of the engagement path 62 are closed at the outer wall of the tightening cylinder 6. Specifically, the end of the first engagement path 621 that is one end of the engagement path 62 extends to the joint body 2 side, and remains on the outer wall of the tightening cylinder 6 without being opened outward. . The end of the second engagement path 622 that is the other end of the engagement path 62 is not opened outward, but remains on the outer wall of the tightening cylinder 6.

図4に示すように、突起部27と係合路62とを係合させ易くするために、締め付け筒体6の内壁のうち第1係合路621の端部の近くには、他の部分よりも薄い肉薄部63が形成されている。また、該肉薄部63とは反対側の締め付け筒体6の外壁には、作業者が締め付け筒体6を継手本体2に対して相対的に回転するときに、指の滑りを防止するための滑り止め部64が設けられている。   As shown in FIG. 4, in order to facilitate the engagement between the protrusion 27 and the engagement path 62, other parts are disposed near the end of the first engagement path 621 on the inner wall of the tightening cylinder 6. A thinner thin portion 63 is formed. In addition, the outer wall of the fastening cylinder 6 on the side opposite to the thin portion 63 is provided to prevent the finger from slipping when the operator rotates the fastening cylinder 6 relative to the joint body 2. An anti-slip portion 64 is provided.

以下、図5〜図7を基づいて、本実施形態の管継手1を用いた樹脂管10の取付及び取り外しを説明する。   Hereinafter, attachment and removal of the resin pipe 10 using the pipe joint 1 of the present embodiment will be described with reference to FIGS.

図5に示すように、継手本体2、シール部材3、ガイド部材4、ホルダ部材5及び締め付け筒体6を組み立てた状態において、シール部材3はガイド部材4によって第2段差部25に押し付けられている。そして、継手本体2の突起部27は、締め付け筒体6の係合路62に係合された状態で、係合路62の第1係合路621の端部付近に位置する。このとき、締め付け筒体6の当接面61はホルダ部材5の露出部52の外側端面と接触するが、露出部52は縮径されない状態である。   As shown in FIG. 5, in a state where the joint body 2, the seal member 3, the guide member 4, the holder member 5, and the tightening cylinder body 6 are assembled, the seal member 3 is pressed against the second step portion 25 by the guide member 4. Yes. The protrusion 27 of the joint body 2 is positioned in the vicinity of the end of the first engagement path 621 of the engagement path 62 while being engaged with the engagement path 62 of the fastening cylinder 6. At this time, the contact surface 61 of the tightening cylinder 6 is in contact with the outer end surface of the exposed portion 52 of the holder member 5, but the exposed portion 52 is not reduced in diameter.

図6に示すように、管継手1の内部に樹脂管10を挿入するときに、ホルダ部材5の露出部52に設けられた食い込み突起53が樹脂管10の外壁と接触しないので、樹脂管10は食い込み突起53と干渉せず、スムーズに締め付け筒体6、ホルダ部材5、ガイド部材4及びシール部材3の内部を順に挿通し、継手本体2の内部に挿入される。そして、シール部材3の内部を挿通するときに、樹脂管10はシール部材3の肉薄部32を押し倒して進む。上述したように、シール部材3はゴム材料によって形成されるので、樹脂管10の外壁が肉薄部32と接触しても、発塵は生じない。樹脂管10の挿入は、樹脂管10の先端面が継手本体2の第1段差部24と当接するまで行われる。   As shown in FIG. 6, when the resin pipe 10 is inserted into the pipe joint 1, the biting protrusion 53 provided on the exposed portion 52 of the holder member 5 does not contact the outer wall of the resin pipe 10. Does not interfere with the biting projection 53 and smoothly passes through the inside of the tightening cylinder 6, the holder member 5, the guide member 4 and the seal member 3 in order, and is inserted into the joint body 2. Then, when inserting the inside of the seal member 3, the resin tube 10 advances by pushing down the thin portion 32 of the seal member 3. As described above, since the seal member 3 is formed of a rubber material, no dust is generated even if the outer wall of the resin tube 10 contacts the thin portion 32. The resin tube 10 is inserted until the tip surface of the resin tube 10 contacts the first step portion 24 of the joint body 2.

図7に示すように、樹脂管10の先端面が第1段差部24と当接した後、継手本体2に対して締め付け筒体6を回転すると、継手本体2の突起部27が係合路62に案内されながら該係合路62と摺動する。このとき、締め付け筒体6の当接面61が外周側からホルダ部材5の露出部52の外側端面を押し付ける。これによって、露出部52が縮径変形し、食い込み突起53は樹脂管10の外壁に食い込んで、樹脂管10の抜けを防止する。そして、突起部27が第2係合路622の端部まで摺動すると、締め付け筒体6の回転が終了する。これによって、樹脂管10は管継手1に取り付けられた状態、すなわち管継手1に接続される状態になる。   As shown in FIG. 7, when the tightening cylinder 6 is rotated with respect to the joint body 2 after the front end surface of the resin tube 10 comes into contact with the first step portion 24, the protrusion 27 of the joint body 2 is engaged with the engagement path. The guide slides with the engagement path 62 while being guided by the guide 62. At this time, the contact surface 61 of the tightening cylinder 6 presses the outer end surface of the exposed portion 52 of the holder member 5 from the outer peripheral side. As a result, the exposed portion 52 is deformed in a reduced diameter, and the biting projection 53 bites into the outer wall of the resin tube 10 to prevent the resin tube 10 from coming off. Then, when the protrusion 27 slides to the end of the second engagement path 622, the rotation of the tightening cylinder 6 ends. As a result, the resin pipe 10 is attached to the pipe joint 1, that is, is connected to the pipe joint 1.

一方、樹脂管10を管継手1から取り外すときに、突起部27を第2係合路622の端部から第1係合路621の端部に摺動させるように締め付け筒体6を逆回転する。これによって、締め付け筒体6の当接面61が露出部52の外側端面を押し付ける状態が解除され、ホルダ部材5の食い込み突起53が樹脂管10の外壁から離れる。そして、食い込み突起53による樹脂管10への食い込み状態を解除した後に、樹脂管10を管継手1の内部にから抜け出すことで、樹脂管10を取り外すことができる。   On the other hand, when removing the resin pipe 10 from the pipe joint 1, the tightening cylinder 6 is rotated in the reverse direction so that the protrusion 27 slides from the end of the second engagement path 622 to the end of the first engagement path 621. To do. As a result, the state in which the contact surface 61 of the tightening cylinder 6 presses the outer end surface of the exposed portion 52 is released, and the biting protrusion 53 of the holder member 5 is separated from the outer wall of the resin tube 10. The resin tube 10 can be removed by removing the resin tube 10 from the inside of the pipe joint 1 after releasing the state of biting into the resin tube 10 by the biting protrusion 53.

上述したように、本実施形態では、樹脂管10を管継手1に取り付けるとき或いは管継手1から取り外すときに、樹脂管10は、ホルダ部材5の食い込み突起53と接触しないので、食い込み突起53との干渉等は生じない。このため、樹脂管10の外壁と食い込み突起53との干渉による発塵を確実に防止することができる。また、例えばナットとスリーブとを有する従来の締め付け継手と比べて、樹脂管10の取付時に生じた樹脂管の強制変形が少ないので、樹脂管10の変形部分を切断せずに樹脂管10を繰り返し使用することができ、コスト削減を図ることが可能になる。   As described above, in the present embodiment, when the resin pipe 10 is attached to or removed from the pipe joint 1, the resin pipe 10 does not come into contact with the biting protrusion 53 of the holder member 5. No interference occurs. For this reason, dust generation due to interference between the outer wall of the resin tube 10 and the biting protrusion 53 can be reliably prevented. Further, for example, the resin tube 10 is less forcedly deformed when the resin tube 10 is attached than a conventional tightening joint having a nut and a sleeve, and therefore, the resin tube 10 is repeated without cutting the deformed portion of the resin tube 10. It can be used, and the cost can be reduced.

また、係合路62の両端が締め付け筒体6の外壁において塞がれているので、樹脂管10の取付及び取り外しの際に、締め付け筒体6を継手本体2から外す必要がないので、部品の紛失等を防止することができる。更に、締め付け筒体6を継手本体2に対して約60°のみ回転するだけで、ホルダ部材5の露出部52を縮径させたり、露出部52の縮径状態を解除したりできるので、片手で樹脂管10の取付及び取り外しを行うことが可能になる。従って、例えば片手しか入らないような限られたスペースにおいても、樹脂管10の取付及び取り外しを行うことができる。   Further, since both ends of the engagement path 62 are blocked by the outer wall of the tightening cylinder 6, it is not necessary to remove the tightening cylinder 6 from the joint body 2 when the resin tube 10 is attached and detached. Can be lost. Furthermore, the diameter of the exposed portion 52 of the holder member 5 can be reduced or the reduced diameter state of the exposed portion 52 can be released simply by rotating the tightening cylinder 6 only about 60 ° relative to the joint body 2. Thus, the resin tube 10 can be attached and detached. Therefore, for example, the resin tube 10 can be attached and detached even in a limited space where only one hand can be inserted.

更に、シール部材3は、ガイド部材4によって継手本体2の内部に設けられた第2段差部25に押し付けられているので、例えば周溝にシール部材を配置する場合と比べて、シール部材3が常にガイド部材4に圧縮されるので、安定したシール性及びサニタリ性(すなわち、衛生性及び清浄性)とを確保することができる。   Furthermore, since the seal member 3 is pressed against the second step portion 25 provided inside the joint body 2 by the guide member 4, for example, the seal member 3 is compared with the case where the seal member is disposed in the circumferential groove. Since the guide member 4 is always compressed, stable sealing properties and sanitary properties (ie, hygiene and cleanliness) can be ensured.

<第2実施形態>
図8は第2実施形態に係る管継手を示す断面図である。本実施形態に係る管継手1Aは、シール部材の形状において上述の第1実施形態と異なるが、その他の構造は第1実施形態と同様であるので、その重複説明を省略する。
Second Embodiment
FIG. 8 is a cross-sectional view showing a pipe joint according to the second embodiment. The pipe joint 1A according to the present embodiment is different from the above-described first embodiment in the shape of the seal member, but the other structure is the same as that of the first embodiment, so that the duplicated explanation is omitted.

図8に示すように、本実施形態では、シール部材としてOリング3Aが用いられている。Oリング3Aは、例えばゴム材料により形成されており、樹脂管10の先端側面の一部と密着するように該樹脂管10に外嵌されている。このOリング3Aは、ガイド部材4によって継手本体2の第2段差部25に押し付けられている。本実施形態の管継手1Aによれば、上述した第1実施形態と同様な作用効果を得られる。   As shown in FIG. 8, in this embodiment, an O-ring 3A is used as a seal member. The O-ring 3 </ b> A is formed of, for example, a rubber material, and is externally fitted to the resin tube 10 so as to be in close contact with a part of the side surface of the tip of the resin tube 10. The O-ring 3 </ b> A is pressed against the second step portion 25 of the joint body 2 by the guide member 4. According to the pipe joint 1A of the present embodiment, the same operational effects as those of the first embodiment described above can be obtained.

<第3実施形態>
図9は第3実施形態に係る管継手を示す断面図である。本実施形態に係る管継手1Bは、継手本体の中空部及びシール部材の形状において上述の第1実施形態と異なるが、その他の構造は第1実施形態と同様であるので、その重複説明を省略する。
<Third Embodiment>
FIG. 9 is a cross-sectional view showing a pipe joint according to the third embodiment. The pipe joint 1B according to the present embodiment is different from the above-described first embodiment in the shape of the hollow portion of the joint body and the seal member, but the other structure is the same as that of the first embodiment, and thus the duplicated explanation is omitted. To do.

図9に示すように、継手本体2Bの中空部は、中径中空部22を有さず、小径中空部21と大径中空部23とからなる。小径中空部21と大径中空部23との間には、段差部28が形成されている。該段差部28には、円環状のシール部材3Bが当接されている。   As shown in FIG. 9, the hollow portion of the joint body 2 </ b> B does not have the medium-diameter hollow portion 22, and includes a small-diameter hollow portion 21 and a large-diameter hollow portion 23. A stepped portion 28 is formed between the small diameter hollow portion 21 and the large diameter hollow portion 23. An annular seal member 3 </ b> B is in contact with the stepped portion 28.

シール部材3Bは、樹脂管10の先端面と当接する端面シール部33と、樹脂管10の先端側面の一部を当接する側面シール部34とを有する。具体的には、このシール部材3Bは、樹脂管10の先端面と密着する端面シール部33と、端面シール部33から軸L方向に延びて樹脂管10の先端側面の一部と密着する側面シール部34とで、断面略L字状に形成されている。そして、シール部材3Bは、端面シール部33の先端面が段差部28に当接し、側面シール部34の後端面がガイド部材4に当接した状態で配置されており、ガイド部材4によって段差部28に押し付けられている。なお、このシール部材3Bは例えばゴム材料により形成されている。   The seal member 3 </ b> B includes an end surface seal portion 33 that contacts the front end surface of the resin tube 10 and a side surface seal portion 34 that contacts a part of the front end side surface of the resin tube 10. Specifically, the seal member 3B includes an end face seal portion 33 that is in close contact with the front end surface of the resin tube 10, and a side surface that extends in the axis L direction from the end surface seal portion 33 and is in close contact with a part of the front end side surface of the resin tube 10. The seal portion 34 is formed in a substantially L-shaped cross section. The seal member 3B is arranged in a state in which the front end surface of the end surface seal portion 33 is in contact with the step portion 28 and the rear end surface of the side surface seal portion 34 is in contact with the guide member 4. 28 is pressed against. The seal member 3B is made of, for example, a rubber material.

本実施形態の管継手1Bによれば、上述した第1実施形態と同様な作用効果を得られるほか、シール部材3Bが樹脂管10の先端面と当接する端面シール部33と、樹脂管10の先端側面の一部を当接する側面シール部34とを有するため、更に以下の作用効果を得られる。   According to the pipe joint 1 </ b> B of the present embodiment, the same effects as those of the first embodiment described above can be obtained, and the end surface seal portion 33 in which the seal member 3 </ b> B comes into contact with the tip surface of the resin pipe 10, Since it has the side seal part 34 which contacts a part of front end side surface, the following effects can be obtained further.

すなわち、飲料や薬液などの液体を製造又は使用する現場において、これらの液体を搬送する樹脂管は勿論だが、樹脂管を接続するための管継手にもサニタリ性が要求されている。従って、管継手においては、異物や雑菌等の侵入、液体の漏れを防ぐために、確実なシール性が求められる。第1実施形態で述べたシール部材3や第2実施形態で述べたOリング3Aの場合、シール部材を樹脂管10の先端側面の一部と当接させてシール性を確保しているが、樹脂管10の端面から側面のシール部材の配置場所までの領域は、シールされていない。このため、樹脂管10を流れる液体が該領域に侵入し、そこに滞留する可能性がある。このような液体の滞留は通常の洗浄では簡単に除去できないので、管継手のサニタリ性に影響を与えてしまう。   That is, in a site where liquids such as beverages and chemicals are manufactured or used, sanitary properties are required not only for resin pipes that transport these liquids but also for pipe joints for connecting the resin pipes. Therefore, the pipe joint is required to have a certain sealing property in order to prevent intrusion of foreign matters, germs and the like and liquid leakage. In the case of the sealing member 3 described in the first embodiment and the O-ring 3A described in the second embodiment, the sealing member is brought into contact with a part of the tip side surface of the resin tube 10 to ensure the sealing performance. The region from the end face of the resin tube 10 to the location of the side seal member is not sealed. For this reason, the liquid flowing through the resin tube 10 may enter the region and stay there. Such stagnation of the liquid cannot be easily removed by ordinary cleaning, and thus affects the sanitary properties of the pipe joint.

これに対し、本実施形態のシール部材3Bは、樹脂管10の先端側面の一部と当接する側面シール部34に加えて、樹脂管10の先端面と当接する端面シール部33を有するので、樹脂管10の先端面もシールすることで、上述した領域への液体侵入及び液体の滞留を確実に防止することができる。その結果、管継手1Bのサニタリ性を向上することができる。   On the other hand, the seal member 3B of the present embodiment has the end surface seal portion 33 that contacts the tip surface of the resin tube 10 in addition to the side surface seal portion 34 that contacts a part of the tip side surface of the resin tube 10. By sealing the front end surface of the resin tube 10, it is possible to reliably prevent liquid intrusion and liquid stagnation into the above-described region. As a result, the sanitary property of the pipe joint 1B can be improved.

以上、本発明の実施形態について詳述したが、本発明は、上述の実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の精神を逸脱しない範囲で、種々の設計変更を行うことができるものである。例えば上述の実施形態では、係合路62が締め付け筒体6の外壁を貫通する経路により形成される例を説明したが、外壁を貫通しない溝により形成されても良い。   Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed. For example, in the above-described embodiment, the example in which the engagement path 62 is formed by a path that penetrates the outer wall of the tightening cylinder 6 has been described. However, the engagement path 62 may be formed by a groove that does not penetrate the outer wall.

1,1A,1B 管継手
2,2B 継手本体
3,3B シール部材
3A Oリング(シール部材)
4 ガイド部材
5 ホルダ部材
6 締め付け筒体
10 樹脂管(配管)
23 大径中空部
26 ネジ部
27 突起部
31 肉厚部
41 円筒部
42 鍔部
43 段差部
51 挿入部
52 露出部
53 食い込み突起
54 スリット
61 当接面
62 係合路
621 第1係合路
622 第2係合路
1, 1A, 1B Pipe joint 2, 2B Joint body 3, 3B Seal member 3A O-ring (seal member)
4 Guide member 5 Holder member 6 Clamping cylinder 10 Resin pipe (pipe)
23 Large-diameter hollow portion 26 Threaded portion 27 Projection portion 31 Thickness portion 41 Cylindrical portion 42 Gutter portion 43 Stepped portion 51 Insertion portion 52 Exposed portion 53 Biting projection 54 Slit 61 Abutment surface 62 Engagement path 621 First engagement path 622 Second engagement path

Claims (8)

配管を接続するための管継手であって、
筒状の継手本体と、
前記継手本体の内部に挿入される挿入部と前記継手本体から露出する露出部とを有し、縮径変形可能なリング状のホルダ部材と、
前記継手本体に外嵌され、内部に前記ホルダ部材の前記露出部と当接して該露出部を縮径させるテーパ状の当接面を有する締め付け筒体と、
を備え、
前記継手本体の外壁には、突起部が設けられ、
前記締め付け筒体の外壁には、前記継手本体の前記突起部と係合するとともに前記突起部を前記ホルダ部材の前記露出部を縮径させる方向に案内する係合路が設けられていることを特徴とする管継手。
A pipe joint for connecting pipes,
A tubular joint body;
A ring-shaped holder member that has an insertion portion that is inserted into the joint body and an exposed portion that is exposed from the joint body;
A tightening cylinder externally fitted to the joint body, and having a tapered contact surface that contacts the exposed portion of the holder member to reduce the diameter of the exposed portion;
With
The outer wall of the joint body is provided with a protrusion,
The outer wall of the tightening cylinder is provided with an engagement path that engages with the protrusion of the joint body and guides the protrusion in the direction of reducing the diameter of the exposed portion of the holder member. Characteristic pipe joint.
前記係合路は、前記締め付け筒体の軸方向に対して傾斜するとともに前記締め付け筒体の周方向に延びる第1係合路と、前記軸方向に直交するとともに前記周方向に延びる第2係合路と、を少なくとも有することを特徴とする請求項1に記載の管継手。   The engagement path is inclined with respect to the axial direction of the fastening cylinder and extends in the circumferential direction of the clamping cylinder, and a second engagement that is orthogonal to the axial direction and extends in the circumferential direction. The pipe joint according to claim 1, comprising at least a joint. 前記係合路の両端は、前記締め付け筒体の外壁において塞がれていることを特徴とする請求項1又は2に記載の管継手。   The pipe joint according to claim 1 or 2, wherein both ends of the engagement path are closed at an outer wall of the tightening cylinder. 前記ホルダ部材の前記露出部には、前記配管の外壁に食い込む食い込み突起が設けられていることを特徴とする請求項1〜3のいずれか一項に記載の管継手。   The pipe joint according to any one of claims 1 to 3, wherein the exposed portion of the holder member is provided with a biting protrusion that bites into an outer wall of the pipe. 前記ホルダ部材には、該ホルダ部材の軸方向に沿って延びるスリットが複数設けられ、
複数の前記スリットは、前記挿入部側及び前記露出部側から交互に形成されていることを特徴とする請求項1〜4のいずれか一項に記載の管継手。
The holder member is provided with a plurality of slits extending along the axial direction of the holder member,
The pipe joint according to any one of claims 1 to 4, wherein the plurality of slits are alternately formed from the insertion portion side and the exposed portion side.
前記ホルダ部材の前記挿入部は、該挿入部に外嵌された筒状のガイド部材を介して前記継手本体の内部に挿入され、
前記ホルダ部材の前記露出部は、前記ガイド部材から露出することを特徴とする請求項1〜5のいずれか一項に記載の管継手。
The insertion portion of the holder member is inserted into the joint main body through a cylindrical guide member that is externally fitted to the insertion portion,
The pipe joint according to claim 1, wherein the exposed portion of the holder member is exposed from the guide member.
前記継手本体の内部には、少なくとも前記配管の先端側面の一部と密着するシール部材が設けられ、
前記シール部材は、前記ガイド部材によって前記継手本体の内部に設けられた段差部に押し付けられていることを特徴とする請求項6に記載の管継手。
Inside the joint body is provided with a seal member that is in close contact with at least a part of the tip side surface of the pipe,
The pipe joint according to claim 6, wherein the seal member is pressed against a step portion provided inside the joint body by the guide member.
前記シール部材は、前記配管の先端面と当接する端面シール部と、前記配管の先端側面の一部と当接する側面シール部とを有することを特徴とする請求項7に記載の管継手。   The pipe joint according to claim 7, wherein the seal member has an end face seal portion that comes into contact with a front end face of the pipe and a side face seal portion that comes into contact with a part of a front end side face of the pipe.
JP2018056712A 2018-03-23 2018-03-23 Pipe joint Pending JP2019168051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018056712A JP2019168051A (en) 2018-03-23 2018-03-23 Pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018056712A JP2019168051A (en) 2018-03-23 2018-03-23 Pipe joint

Publications (1)

Publication Number Publication Date
JP2019168051A true JP2019168051A (en) 2019-10-03

Family

ID=68106473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018056712A Pending JP2019168051A (en) 2018-03-23 2018-03-23 Pipe joint

Country Status (1)

Country Link
JP (1) JP2019168051A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111878652A (en) * 2020-07-07 2020-11-03 邱强生 Corrugated pipe quick connector
JP2021004624A (en) * 2019-06-25 2021-01-14 株式会社ノーリツ Joint for synthetic resin pipe
JP2021004623A (en) * 2019-06-25 2021-01-14 株式会社ノーリツ Joint for synthetic resin pipe
WO2024171595A1 (en) * 2023-02-16 2024-08-22 Smc株式会社 Pipe fitting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000146041A (en) * 1998-11-13 2000-05-26 Bantekku Kk Coupling structure of pipe body, assembly method of pipe body, and packing for inner surface lining pipe
JP2003214584A (en) * 2002-01-22 2003-07-30 Nitto Kohki Co Ltd Tube coupling
JP2004092903A (en) * 2002-07-10 2004-03-25 Masabumi Minami Pipe connector
JP2004100794A (en) * 2002-09-09 2004-04-02 Bridgestone Corp Pipe joint structure
JP2015048887A (en) * 2013-08-30 2015-03-16 株式会社トヨックス Pipe joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000146041A (en) * 1998-11-13 2000-05-26 Bantekku Kk Coupling structure of pipe body, assembly method of pipe body, and packing for inner surface lining pipe
JP2003214584A (en) * 2002-01-22 2003-07-30 Nitto Kohki Co Ltd Tube coupling
JP2004092903A (en) * 2002-07-10 2004-03-25 Masabumi Minami Pipe connector
JP2004100794A (en) * 2002-09-09 2004-04-02 Bridgestone Corp Pipe joint structure
JP2015048887A (en) * 2013-08-30 2015-03-16 株式会社トヨックス Pipe joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021004624A (en) * 2019-06-25 2021-01-14 株式会社ノーリツ Joint for synthetic resin pipe
JP2021004623A (en) * 2019-06-25 2021-01-14 株式会社ノーリツ Joint for synthetic resin pipe
JP7281721B2 (en) 2019-06-25 2023-05-26 株式会社ノーリツ Fittings for synthetic resin pipes
JP7300602B2 (en) 2019-06-25 2023-06-30 株式会社ノーリツ Fittings for synthetic resin pipes
CN111878652A (en) * 2020-07-07 2020-11-03 邱强生 Corrugated pipe quick connector
WO2024171595A1 (en) * 2023-02-16 2024-08-22 Smc株式会社 Pipe fitting

Similar Documents

Publication Publication Date Title
JP2019168051A (en) Pipe joint
JP3398873B2 (en) Plastics push-in fittings
US6334634B1 (en) Push-to-connect tubing fitting
KR20100068282A (en) Pipe fitting
KR100366129B1 (en) The pipe coupler
JP2004092903A (en) Pipe connector
JP2011179633A (en) Pipe joint
JP2005090531A (en) Pipe joint
JP2001200972A (en) Tube joint
JP2006097879A (en) Pipe joint
KR102288442B1 (en) Flexible hose connection fitting
TW201422956A (en) Pipe joint
JP5033509B2 (en) Plug-in fittings
JP2000088163A (en) Pipe body connection structure
JP2010249166A (en) Pipe joint
JP4972422B2 (en) Pipe fitting
JP6922342B2 (en) Pipe fitting
JP6490910B2 (en) Removal jig
JP5570862B2 (en) Pipe fitting
JP5808528B2 (en) Pipe fitting
JP3682408B2 (en) Fitting
GB2515126A (en) Pipe Insert
JP2012031947A (en) Insertion type pipe joint
JP2002195480A (en) Joint
JP2007263375A (en) Spigot joint

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20201006

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210622

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210625

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20220125