JP2019060456A - Cleaning port joint - Google Patents

Cleaning port joint Download PDF

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JP2019060456A
JP2019060456A JP2017187323A JP2017187323A JP2019060456A JP 2019060456 A JP2019060456 A JP 2019060456A JP 2017187323 A JP2017187323 A JP 2017187323A JP 2017187323 A JP2017187323 A JP 2017187323A JP 2019060456 A JP2019060456 A JP 2019060456A
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cleaning port
cleaning
joint
lid
peripheral surface
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JP7084119B2 (en
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博章 花木
Hiroaki Hanaki
博章 花木
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

To provide a cleaning port joint capable of enhancing cut-off performance of a lid body mounted at a cleaning port part, and preventing water leakage from the cleaning port part in high-pressure cleaning.SOLUTION: A cleaning port joint comprises: a joint body having a cleaning port part formed into a cylindrical shape; a lid body mounted to the cleaning port part in a bayonet system; and an annular seal member provided between an inner peripheral surface of the cleaning port part and an outer peripheral surface of an insertion part inserted into the cleaning port part of the lid body. The cleaning port part has a circumferential step part formed at an end part on a center side of the joint body. The lid body has an elastic flange part formed on an outer periphery of the end part of the insertion part on the center side of the joint body. The elastic flange part is positioned on the center side of the joint body in the step part.SELECTED DRAWING: Figure 2

Description

本発明は、排水管の一部に組み込まれる掃除口継手に関するものである。   The present invention relates to a cleaning port joint incorporated into a part of a drain pipe.

排水管の一部に組み込まれる掃除口継手は、円筒状に形成され掃除口部を有する継手本体を備え、蓋体が環状のシール部材を介して掃除口部に着脱可能に装着される。ここで蓋体の掃除口部への着脱作業を簡便に行うために、蓋体を掃除口部に差し込んで捻ることで装着および位置決めが完了するバヨネット方式の蓋体の採用が広がっている。   The cleaning port joint incorporated into a part of the drainage pipe has a cylindrically formed joint body having a cleaning port, and the lid is detachably mounted to the cleaning port via an annular seal member. Here, in order to carry out the attachment / detachment operation to the cleaning mouth of the lid simply, adoption of the bayonet type lid which installation and positioning are completed by inserting and twisting the lid in the cleaning mouth is spreading.

特許文献１には、バヨネット方式の蓋体を備える掃除口継手の一例が開示されている。この掃除口継手では、掃除口部の内周面に複数の略Ｌ字状の係合溝が設けられ、蓋体の外周面に複数の係合突起が設けられる。掃除口部に蓋体を装着するときには、係合溝と係合突起との位置を合わせて掃除口部に蓋体を挿入し、蓋体を掃除口部の軸周りに所定角度だけ回転させることで蓋体が固定される。ここでこの掃除口継手においては、掃除口部の内周面に受け面が設けられ、蓋体の外周面に段部が設けられる。そして、掃除口部に蓋体を装着した状態においては、シール部材が掃除口部の受け面と蓋体の段部との間に挟み込まれて掃除口部の軸方向に圧縮されることにより、掃除口部と蓋体との間の止水性が確保されている。   Patent Document 1 discloses an example of a cleaning port joint provided with a bayonet-type lid. In this cleaning port joint, a plurality of substantially L-shaped engagement grooves are provided on the inner peripheral surface of the cleaning port, and a plurality of engagement protrusions are provided on the outer peripheral surface of the lid. When attaching the lid to the cleaning port, align the positions of the engagement groove and the engagement projection, insert the lid into the cleaning port, and rotate the lid by a predetermined angle around the cleaning port axis. The lid is fixed at. Here, in the cleaning port joint, a receiving surface is provided on the inner peripheral surface of the cleaning port, and a stepped portion is provided on the outer peripheral surface of the lid. Then, in a state where the lid is attached to the cleaning opening, the seal member is sandwiched between the receiving surface of the cleaning opening and the step of the lid and compressed in the axial direction of the cleaning opening, Watertightness between the cleaning port and the lid is secured.

特開２０１５−２００４０５号公報Unexamined-Japanese-Patent No. 2015-200405

ところでマンション等の建物内の排水管では、排水管内の付着物や詰まりを取るために、定期的に高圧洗浄機を用いた洗浄（掃除）が行われる。ここでバヨネット方式の蓋体を備える掃除口継手では、高圧洗浄機の洗浄ノズルから噴射される高圧の洗浄水が、掃除口部の内周面と蓋体の外周面との間の隙間を通ってシール部材に直接当たる構造となっていることから、高圧洗浄時において、高圧の洗浄水がシール部材を乗り越えて掃除口部から漏れる場合があった。   By the way, in a drainage pipe in a building such as an apartment, cleaning (cleaning) using a high-pressure washer is performed regularly to remove deposits and clogging in the drainage pipe. Here, in the cleaning port joint provided with the bayonet type lid, high-pressure cleaning water jetted from the cleaning nozzle of the high-pressure cleaner passes through the gap between the inner peripheral surface of the cleaning port and the outer peripheral surface of the lid. Because the seal member is in direct contact with the seal member, high pressure wash water may get over the seal member and leak from the cleaning port during high pressure washing.

本発明の目的は、掃除口部に装着される蓋体の止水性能を高め、高圧洗浄時に掃除口部から水漏れすることを防止する掃除口継手を提供することである。   An object of the present invention is to provide a cleaning port joint which improves the water blocking performance of a lid attached to a cleaning port and prevents water leakage from the cleaning port during high-pressure cleaning.

本発明の掃除口継手は、円筒状に形成され掃除口部を有する継手本体と、前記掃除口部に対してバヨネット方式で装着される蓋体と、前記掃除口部の内周面と前記蓋体の前記掃除口部に挿入する挿入部の外周面との間に設けられる環状のシール部材とを備える掃除口継手であって、前記掃除口部は、前記継手本体の中心側の端部に形成された円周状の段部を有し、前記蓋体は、前記挿入部の前記継手本体の中心側の端部の外周に形成された弾性フランジ部を有し、前記弾性フランジ部は、前記段部の前記継手本体の中心側に位置することを特徴とする。   The cleaning port joint according to the present invention comprises a coupling main body formed in a cylindrical shape and having a cleaning port, a lid attached to the cleaning port by the bayonet method, an inner circumferential surface of the cleaning port and the lid A cleaning port joint comprising: an annular seal member provided between the body and the outer peripheral surface of the insertion portion to be inserted into the cleaning port portion, wherein the cleaning port portion is provided at an end portion on the center side of the joint body. The cover has an elastic flange portion formed on an outer periphery of an end of the insertion portion on the center side of the joint main body, and the elastic flange portion is formed of: It is located in the center side of the said joint main body of the said step part.

また本発明の掃除口継手は、前記弾性フランジ部がゴム板により形成されていることを特徴とする。   Further, the cleaning port joint of the present invention is characterized in that the elastic flange portion is formed of a rubber plate.

また本発明の掃除口継手は、円筒状に形成され掃除口部を有する継手本体と、前記掃除口部に対してバヨネット方式で装着される蓋体と、前記掃除口部の内周面と前記蓋体の前記掃除口部に挿入する挿入部の外周面との間に設けられる環状の第１シール部材とを備える掃除口継手であって、前記第１シール部材よりも前記継手本体の中心側の位置において、前記掃除口部の内周面と、前記挿入部の外周面との間に設けられる環状の第２シール部材を備えることを特徴とする。   Further, the cleaning port joint of the present invention comprises a coupling main body formed in a cylindrical shape and having a cleaning port portion, a lid attached to the cleaning port portion by a bayonet method, an inner peripheral surface of the cleaning port portion, and A cleaning port joint comprising: an annular first seal member provided between the cover and an outer peripheral surface of an insertion portion inserted into the cleaning port portion of the lid, wherein the center side of the joint main body than the first seal member And an annular second seal member provided between the inner peripheral surface of the cleaning port and the outer peripheral surface of the insertion portion.

また本発明の掃除口継手は、前記挿入部の外周面が前記第１シール部材よりも前記継手本体の中心側の位置において、前記掃除口部の内周面側に突出していないことを特徴とする。   Further, the cleaning port joint of the present invention is characterized in that the outer peripheral surface of the insertion portion does not protrude toward the inner peripheral surface side of the cleaning port at a position closer to the center of the joint body than the first seal member. Do.

本発明によれば、掃除口部に装着される蓋体の止水性能を高め、高圧洗浄時に掃除口部から水漏れすることを防止する掃除口継手を提供することができる。   According to the present invention, it is possible to provide a cleaning port joint that improves the water blocking performance of the lid attached to the cleaning port and prevents water leakage from the cleaning port during high-pressure cleaning.

第１の実施の形態に係る掃除口継手の斜視図である。It is a perspective view of the cleaning port joint concerning a 1st embodiment. 第１の実施の形態に係る掃除口継手の縦断面図である。It is a longitudinal cross-sectional view of the cleaning port coupling concerning a 1st embodiment. 第１の実施の形態に係る掃除口継手の縦断面図の一部を拡大した図である。It is the figure which expanded a part of longitudinal cross-sectional view of the cleaning port coupling which concerns on 1st Embodiment. 第２の実施の形態に係る掃除口継手の縦断面図である。It is a longitudinal cross-sectional view of the cleaning port coupling concerning a 2nd embodiment.

以下、図面を参照して実施の形態に係る掃除口継手について説明する。 図１は第１の実施の形態に係る掃除口継手の斜視図であり、図２は掃除口継手の縦断面図であり、図３は掃除口継手の縦断面図の一部を拡大した図である。掃除口継手１０は、排水管の一部に組み込まれるもので、円筒状に形成される継手本体１１と、継手本体１１に形成されている掃除口部１３に対してバヨネット方式で装着される蓋体２０と、掃除口部１３の内周面と蓋体２０の掃除口部１３に挿入する挿入筒部（挿入部）２１の外周面との間に設けられる環状のシール部材（止水用Ｏリング）３０とを備えている。   Hereinafter, the cleaning port joint according to the embodiment will be described with reference to the drawings. FIG. 1 is a perspective view of the cleaning port joint according to the first embodiment, FIG. 2 is a longitudinal sectional view of the cleaning port joint, and FIG. 3 is an enlarged view of a part of the longitudinal sectional view of the cleaning port joint It is. The cleaning port joint 10 is incorporated in a part of the drainage pipe, and is a lid that is attached by a bayonet method to the cylindrical fitting body 11 and the cleaning port 13 formed on the joint body 11. An annular seal member (O for water blocking) provided between the body 20 and the inner peripheral surface of the cleaning port 13 and the outer peripheral surface of the insertion cylindrical portion (inserting portion) 21 inserted into the cleaning port 13 of the lid 20 And a ring 30).

継手本体１１は、主管部材１２と、主管部材１２の両端部に設けられ排水管を構成するパイプ（図示せず）が接続させるパイプ接続部１２ｐ，１２ｐを備えている。この実施の形態では、主管部材１２は、一方のパイプ接続部１２ｐと他方のパイプ接続部１２ｐとが直線的に接続されるストレート形状をなしているが、主管部材１２は湾曲または屈曲していてもよい。   The joint main body 11 includes a main pipe member 12 and pipe connection parts 12p and 12p which are provided at both ends of the main pipe member 12 and are connected to pipes (not shown) constituting a drainage pipe. In this embodiment, the main pipe member 12 has a straight shape in which one pipe connection portion 12p and the other pipe connection portion 12p are linearly connected, but the main pipe member 12 is curved or bent. It is also good.

掃除口部１３は、継手本体１１の軸線Ｌ１方向に対して直交する方向（軸線Ｌ２方向）に延びるように主管部材１２に形成されている。掃除口部１３の主管部材１２から離間した側の先端部１３ａの内周面には、掃除口部１３の管路の内径が拡大された被係合部１４が形成されている。被係合部１４には、掃除口部１３の周方向に間隔を空けて複数の係合溝１５（本実施の形態においては３個）が形成されている。また被係合部１４の主管部材１２側には軸線Ｌ２方向に直交する受け面１６が形成されている。更に掃除口部１３の主管部材１２側の端部には円周状の段部１７が形成されている。   The cleaning port 13 is formed in the main pipe member 12 so as to extend in a direction (axial line L2 direction) orthogonal to the axial line L1 direction of the joint main body 11. An engaged portion 14 in which the inner diameter of the conduit of the cleaning port 13 is enlarged is formed on the inner peripheral surface of the tip 13a of the cleaning port 13 away from the main pipe member 12. A plurality of engaging grooves 15 (three in the present embodiment) are formed in the engaged portion 14 at intervals in the circumferential direction of the cleaning port 13. Further, on the main pipe member 12 side of the engaged portion 14, a receiving surface 16 orthogonal to the direction of the axis L2 is formed. Furthermore, a circumferential step 17 is formed at the end of the cleaning port 13 on the side of the main pipe member 12.

係合溝１５は、掃除口部１３の先端部１３ａに開口した開口部と、開口部から掃除口部１３の軸線Ｌ２方向に平行に主管部材１２側に向かって延びる導入溝と、導入溝の主管部材１２側の端部から主管部材１２の周方向に沿って延びる摺動溝とを備えている。摺動溝は、導入溝側から主管部材１２に漸次近づくよう傾斜して形成されている。   The engagement groove 15 has an opening opened at the tip 13a of the cleaning port 13, an introduction groove extending from the opening toward the main pipe member 12 parallel to the direction of the axis L2 of the cleaning port 13, and an introduction groove A sliding groove extending along the circumferential direction of the main pipe member 12 from the end on the main pipe member 12 side is provided. The sliding groove is formed to be inclined so as to gradually approach the main pipe member 12 from the introduction groove side.

蓋体２０は、挿入筒部２１、係合部２２、フランジ部２３、閉塞板２４及び弾性フランジ部２５を備えている。挿入筒部２１は、円筒状をなし掃除口部１３の管路の内径よりもわずかに小さい外径を有している。係合部２２は、挿入筒部２１よりも外周側に拡径した円筒状をなしている。係合部２２の外周面には、周方向に間隔を空けて、係合溝１５と同数の係合突起（図示せず、本実施の形態においては３個）が形成されている。係合突起は、係合部２２の周方向に沿った幅が、係合溝１５に挿入可能な寸法で形成されている。なお、掃除口部１３の被係合部１４に形成された係合溝１５と、蓋体２０の係合部２２に形成された係合突起が掃除口部１３に対して蓋体２０を装着するバヨネットを構成する。   The lid 20 includes an insertion cylindrical portion 21, an engagement portion 22, a flange portion 23, a closing plate 24 and an elastic flange portion 25. The insertion tube portion 21 is cylindrical and has an outer diameter slightly smaller than the inner diameter of the channel of the cleaning port portion 13. The engaging portion 22 has a cylindrical shape with a diameter larger on the outer peripheral side than the insertion cylindrical portion 21. On the outer peripheral surface of the engaging portion 22, the same number of engaging protrusions (not shown, three in the present embodiment) are formed at intervals in the circumferential direction. The engaging protrusion has a width along the circumferential direction of the engaging portion 22 that is sized to be insertable into the engaging groove 15. Incidentally, the cover 20 is attached to the cleaning port 13 with the engaging groove 15 formed in the engaged portion 14 of the cleaning port 13 and the engaging projection formed in the engaging portion 22 of the cover 20 Configure the Bayonet.

閉塞板２４は、蓋体２０を掃除口部１３に装着して閉状態としたときに、主管部材１２の内周面に連続するよう湾曲して形成されている。弾性フランジ部２５は、ゴム板により形成され挿入筒部２１の主管部材１２の中心側の端部の外周に取り付けられている。弾性フランジ部２５は、蓋体２０を掃除口部１３に装着して閉状態としたときに、段部１７の主管部材１２の中心側に位置する。   The closing plate 24 is curved and formed so as to be continuous with the inner circumferential surface of the main pipe member 12 when the lid 20 is attached to the cleaning port 13 and is in a closed state. The elastic flange portion 25 is formed of a rubber plate and is attached to the outer periphery of the end portion on the center side of the main pipe member 12 of the insertion cylindrical portion 21. The elastic flange portion 25 is positioned on the center side of the main pipe member 12 of the step portion 17 when the lid 20 is attached to the cleaning port portion 13 to be in a closed state.

蓋体２０の挿入筒部２１の内側には、蓋体２０を開閉する際に作業者が掴むための摘まみ部２６が設けられている。また蓋体２０は、フランジ部２３の挿入筒部２１の中心軸を挟んで対向する位置に工具係合溝２７を備えている。   Inside the insertion cylinder 21 of the lid 20, a knob 26 is provided for the operator to grip when opening and closing the lid 20. Further, the lid 20 is provided with a tool engagement groove 27 at a position opposite to the center axis of the insertion cylindrical portion 21 of the flange portion 23.

掃除口継手１０の掃除口部１３に蓋体２０を装着するには、掃除口部１３の受け面１６と係合部２２の主管部材１２側の面との間にシール部材３０を介在させた状態で、蓋体２０に形成された係合突起を係合溝１５の位置に合わせ、挿入筒部２１を掃除口部１３内に押し込み係合部２２を掃除口部１３の被係合部１４に係合させる。この場合に弾性フランジ部２５の外径は、掃除口部１３の管路の内径より大きいが、蓋体２０の挿入筒部２１を掃除口部１３内に押し込むことにより、弾性フランジ部２５が撓んで掃除口部１３の管路を通過し段部１７の主管部材１２の中心側に移動する。   In order to attach the lid 20 to the cleaning port 13 of the cleaning port joint 10, the seal member 30 is interposed between the receiving surface 16 of the cleaning port 13 and the surface of the engaging section 22 on the main pipe member 12 side. In the state, align the engagement projection formed on the lid 20 with the position of the engagement groove 15, and push the insertion tube 21 into the cleaning port 13 to engage the engaging portion 22 into the engaged portion 14 of the cleaning port 13. Engage in In this case, although the outer diameter of the elastic flange portion 25 is larger than the inner diameter of the conduit of the cleaning port portion 13, the elastic flange portion 25 is bent by pushing the insertion cylindrical portion 21 of the lid 20 into the cleaning port portion 13. And move to the center side of the main pipe member 12 of the step 17 through the pipe line of the cleaning port 13.

そして作業者が摘まみ部２６を把持して蓋体２０を掃除口部１３の軸線Ｌ２回りに回転させることにより、蓋体２０が掃除口部１３に対してバヨネット方式で装着される。この場合にシール部材３０が掃除口部１３の受け面１６と蓋体２０係合部２２の主管部材１２側の面との間に挟み込まれて掃除口部１３の軸方向（軸線Ｌ２方向）に圧縮されることにより、掃除口部１３と蓋体２０との間の止水性が確保される。   Then, the operator grips the knob 26 and rotates the lid 20 about the axis L2 of the cleaning port 13, whereby the lid 20 is attached to the cleaning port 13 by the bayonet method. In this case, the seal member 30 is sandwiched between the receiving surface 16 of the cleaning port 13 and the surface of the lid 20 engaging section 22 on the main pipe member 12 side, and in the axial direction (axis L2 direction) of the cleaning port 13 By being compressed, waterproofness between the cleaning port 13 and the lid 20 is secured.

蓋体２０を閉状態とすると、蓋体２０の閉塞板２４が、主管部材１２の内周面に連続し、主管部材１２内に突出しないように構成されている。これにより、掃除口継手１０の蓋体２０の部分で、汚水が溜まったり主管部材１２内の排水の流れに損失を与えるのを防止することができる。   When the lid 20 is in a closed state, the closing plate 24 of the lid 20 is configured to be continuous with the inner circumferential surface of the main pipe member 12 and not to protrude into the main pipe member 12. As a result, it is possible to prevent the accumulation of dirty water or the loss of drainage flow in the main pipe member 12 at the lid 20 of the cleaning port joint 10.

蓋体２０を掃除口部１３から取り外すには、作業者が摘まみ部２６を把持して蓋体２０を上記とは反対方向に回転させ、蓋体２０を掃除口部１３から引き抜くことにより、蓋体２０が掃除口部１３から取り外される。   In order to remove the lid 20 from the cleaning port 13, the operator grips the pick 26 and rotates the lid 20 in the opposite direction to the above, thereby pulling out the lid 20 from the cleaning port 13. The lid 20 is removed from the cleaning port 13.

高圧洗浄機によって掃除口継手１０が接続されている排水管の洗浄を行うときには、先端に洗浄ノズルが設けられた高圧洗浄ホースが排水管内に挿入される。洗浄ノズルは、例えば高圧洗浄ホースに対して軸周りに回転可能とされており、元圧が１５〜３０ＭＰａの高圧の洗浄水を排水管の内面に対して回転しながら噴射する。   When the drain pipe to which the cleaning port joint 10 is connected is cleaned by the high pressure cleaner, a high pressure cleaning hose provided with a cleaning nozzle at its tip is inserted into the drain pipe. The cleaning nozzle is rotatable, for example, about an axis with respect to a high pressure cleaning hose, and sprays high pressure cleaning water with an original pressure of 15 to 30 MPa while rotating it against the inner surface of the drainage pipe.

掃除口継手１０においては、蓋体２０の弾性フランジ部２５が段部１７の主管部材１２の中心側に位置するため、高圧洗浄時に段部１７の軸線Ｌ１に直交する面と弾性フランジ部２５の外縁部との間を通過した洗浄水は段部１７の軸線Ｌ１に平行な面で受けられて減速され、掃除口部１３の内周面と蓋体２０の外周面との間の隙間を通ってシール部材３０に到達する。   In the cleaning port joint 10, since the elastic flange portion 25 of the lid 20 is located on the center side of the main pipe member 12 of the step 17, the plane perpendicular to the axis L1 of the step 17 and the elastic flange 25 The washing water having passed between the outer edge portion is received in a plane parallel to the axis L1 of the step portion 17 and decelerated, and passes through the gap between the inner peripheral surface of the cleaning port 13 and the outer peripheral surface of the lid 20. Thus, the seal member 30 is reached.

即ちシール部材３０に到達した洗浄水の水圧は小さくなっているため、洗浄水がシール部材３０を乗り越えることがなく、掃除口部１３の内側面と蓋２０の外周面との間の止水性能を高め掃除口部１３からの水漏れを防止することができる。したがって、バヨネット方式の蓋２０であっても、高圧洗浄機を用いて排水管を洗浄するときの水漏れを防止することができる。   That is, since the water pressure of the cleaning water reaching the sealing member 30 is small, the cleaning water does not get over the sealing member 30, and the water blocking performance between the inner side surface of the cleaning port 13 and the outer peripheral surface of the lid 20 Water from the cleaning port 13 can be prevented. Therefore, even with the bayonet lid 20, it is possible to prevent water leakage when the drain pipe is cleaned using a high-pressure cleaner.

次に第２の実施の形態に係る掃除口継手について説明する。図４は第２の実施の形態に係る掃除口継手の縦断面図である。第２の実施の形態に係る掃除口継手４０は、第１の実施の形態に係る掃除口継手１０における、掃除口部１３に装着される蓋体２０の止水構造を２つのシール部材を用いるものに変更したものであり、その他の点については、第１の実施の形態に係る掃除口継手１０と同一の構成を有する。従って第２の実施の形態に係る掃除口継手４０は、第１の実施の形態に係る掃除口継手１０の構成と同一の構成に、第１の実施の形態の掃除口継手１０の構成に付した符号と同一の符号を付して説明を行う。   Next, a cleaning port joint according to a second embodiment will be described. FIG. 4 is a longitudinal sectional view of the cleaning port joint according to the second embodiment. The cleaning port joint 40 according to the second embodiment uses two water sealing structures of the lid 20 mounted on the cleaning port 13 in the cleaning port joint 10 according to the first embodiment. It is changed into a thing and it has the same composition as cleaning mouth joint 10 concerning a 1st embodiment about other points. Therefore, the cleaning port joint 40 according to the second embodiment has the same configuration as that of the cleaning port joint 10 according to the first embodiment except for the configuration of the cleaning port joint 10 according to the first embodiment. The description will be given with the same reference numerals as the reference numerals.

掃除口継手４０は、挿入筒部２１の外周面のシール部材３０よりも主管部材１２の中心側にシール部材（Ｏリング）３２を配置する円周状の凹部２８を備えている。ここで挿入筒部２１の外周面は、シール部材３０よりも主管部材１２の中心側の位置において、掃除口部１３の内周面側に突出していない。   The cleaning port joint 40 is provided with a circumferential recess 28 in which the seal member (O ring) 32 is disposed closer to the center of the main pipe member 12 than the seal member 30 on the outer peripheral surface of the insertion cylindrical portion 21. Here, the outer peripheral surface of the insertion cylindrical portion 21 does not protrude to the inner peripheral surface side of the cleaning port 13 at a position closer to the center of the main pipe member 12 than the seal member 30.

掃除口継手４０の掃除口部１３に蓋体２０を装着するには、掃除口部１３の受け面１６と係合部２２の主管部材１２側の面との間にシール部材３０を介在させ、凹部２８にシール部材３２を配置した状態で、蓋体２０に形成された係合突起を係合溝１５の位置に合わせる。そして挿入筒部２１を掃除口部１３内に挿入し、蓋体２０を掃除口部１３の軸線Ｌ２回りに回転させることにより、蓋体２０が掃除口部１３に対してバヨネット方式で装着される。   In order to attach the lid 20 to the cleaning port 13 of the cleaning port joint 40, the seal member 30 is interposed between the receiving surface 16 of the cleaning port 13 and the surface on the main pipe member 12 side of the engaging portion 22; With the seal member 32 disposed in the recess 28, the engagement protrusion formed on the lid 20 is aligned with the position of the engagement groove 15. Then, the insertion tube portion 21 is inserted into the cleaning port 13 and the lid 20 is attached to the cleaning port 13 by the bayonet method by rotating the lid 20 around the axis L2 of the cleaning port 13 .

この場合にシール部材３０が掃除口部１３の受け面１６と蓋体２０の係合部２２の主管部材１２側の面との間に挟み込まれて掃除口部１３の軸方向に圧縮され、更にシール部材３２が掃除口部１３の内周面に接触することにより、掃除口部１３と蓋体２０との間の止水性が確保される。   In this case, the seal member 30 is sandwiched between the receiving surface 16 of the cleaning port 13 and the surface of the engaging portion 22 of the lid 20 on the main pipe 12 side and compressed in the axial direction of the cleaning port 13 When the seal member 32 contacts the inner peripheral surface of the cleaning port 13, waterproofness between the cleaning port 13 and the lid 20 is secured.

高圧洗浄機によって掃除口継手４０が接続されている排水管の洗浄を行うときには、先端に洗浄ノズルが設けられた高圧洗浄ホースが排水管内に挿入され高圧の洗浄水を排水管の内面に対して回転しながら噴射する。挿入筒部２１の外周面と掃除口部１３の内周面との間の隙間に向かって噴射された洗浄水は、シール部材３２と掃除口部１３の内周面との間を通過する際に減速され、減速された洗浄水が掃除口部１３の内周面と蓋体２０の外周面との間の隙間を通ってシール部材３０に到達する。   When the drain pipe to which the cleaning port joint 40 is connected is cleaned by a high pressure washer, a high pressure cleaning hose provided with a cleaning nozzle at its tip is inserted into the drain pipe, and high pressure cleaning water is directed against the inner surface of the drain pipe. Spray while rotating. When the washing water jetted toward the gap between the outer peripheral surface of the insertion tube 21 and the inner peripheral surface of the cleaning port 13 passes between the seal member 32 and the inner peripheral surface of the cleaning port 13 The cleaning water decelerated and decelerated reaches the seal member 30 through the gap between the inner peripheral surface of the cleaning port 13 and the outer peripheral surface of the lid 20.

即ちシール部材３０に到達した洗浄水の水圧は小さくなっているため、洗浄水がシール部材３０を乗り越えることがなく、掃除口部１３の内側面と蓋２０の外周面との間の止水性能を高め掃除口部１３からの水漏れを防止することができる。したがって、バヨネット方式の蓋２０であっても、高圧洗浄機を用いて排水管を洗浄するときの水漏れを防止することができる。   That is, since the water pressure of the cleaning water reaching the sealing member 30 is small, the cleaning water does not get over the sealing member 30, and the water blocking performance between the inner side surface of the cleaning port 13 and the outer peripheral surface of the lid 20 Water from the cleaning port 13 can be prevented. Therefore, even with the bayonet lid 20, it is possible to prevent water leakage when the drain pipe is cleaned using a high-pressure cleaner.

なお、第２の実施の形態においては、シール部材３２としてＯリングを用いているが、Ｏリングに代えて環状のパッキンまたは環状のゴム板などを用いてもよい。また第２の実施の形態においては、蓋体２０の挿入筒部２１の外周面のシール部材３０よりも主管部材１２の中心側にシール部材３２を配置する円周状の凹部２８を備えているが、掃除口部１３の内周面のシール部材３０よりも主管部材１２の中心側にシール部材３２を配置する円周状の凹部を設けてもよい。   In the second embodiment, an O-ring is used as the seal member 32. However, in place of the O-ring, an annular packing or an annular rubber plate may be used. Further, in the second embodiment, a circumferential recess 28 for disposing the seal member 32 on the center side of the main pipe member 12 with respect to the seal member 30 on the outer peripheral surface of the insertion cylindrical portion 21 of the lid 20 is provided. However, a circumferential recess may be provided in which the seal member 32 is disposed closer to the center of the main pipe member 12 than the seal member 30 on the inner peripheral surface of the cleaning port 13.

１０，４０…掃除口継手、１１…継手本体、１２…主管部材、１３…掃除口部、１４…被係合部、１７…段部、２０…蓋体、２１…挿入筒部、２２…係合部、２３…フランジ部、２４…閉塞板、２５…弾性フランジ部、３０,３２…シール部材 DESCRIPTION OF SYMBOLS 10, 40 ... Cleaning opening joint, 11 ... Joint main body, 12 ... Main pipe member, 13 ... Cleaning opening part, 14 ... Reception part, 17 ... Step part, 20 ... Lid, 21 ... Insertion cylinder part, 22 ... Engagement Joint part, 23 ... flange part, 24 ... closing plate, 25 ... elastic flange part, 30, 32 ... sealing member

Claims (4)

円筒状に形成され掃除口部を有する継手本体と、前記掃除口部に対してバヨネット方式で装着される蓋体と、前記掃除口部の内周面と前記蓋体の前記掃除口部に挿入する挿入部の外周面との間に設けられる環状のシール部材とを備える掃除口継手であって、
前記掃除口部は、前記継手本体の中心側の端部に形成された円周状の段部を有し、
前記蓋体は、前記挿入部の前記継手本体の中心側の端部の外周に形成された弾性フランジ部を有し、
前記弾性フランジ部は、前記段部の前記継手本体の中心側に位置することを特徴とする掃除口継手。 Inserted in the cylindrical body and the joint body having the cleaning port, the lid mounted to the cleaning port by the bayonet method, the inner peripheral surface of the cleaning port and the cleaning port of the lid And an annular seal member provided between the outer peripheral surface of the insertion portion and the cleaning opening joint,
The cleaning port has a circumferential step formed at an end on the center side of the joint body,
The lid has an elastic flange portion formed on an outer periphery of an end of the insertion portion on the center side of the joint body,
The cleaning opening joint characterized in that the elastic flange portion is located on the center side of the joint main body of the step portion. 前記弾性フランジ部は、ゴム板により形成されていることを特徴とする請求項１記載の掃除口継手。   The cleaning port joint according to claim 1, wherein the elastic flange portion is formed of a rubber plate. 円筒状に形成され掃除口部を有する継手本体と、前記掃除口部に対してバヨネット方式で装着される蓋体と、前記掃除口部の内周面と前記蓋体の前記掃除口部に挿入する挿入部の外周面との間に設けられる環状の第１シール部材とを備える掃除口継手であって、
前記第１シール部材よりも前記継手本体の中心側の位置において、前記掃除口部の内周面と前記挿入部の外周面との間に設けられる環状の第２シール部材を備えることを特徴とする掃除口継手。 Inserted in the cylindrical body and the joint body having the cleaning port, the lid mounted to the cleaning port by the bayonet method, the inner peripheral surface of the cleaning port and the cleaning port of the lid And an annular first seal member provided between the outer peripheral surface of the insertion portion and the cleaning opening joint,
An annular second seal member provided between the inner peripheral surface of the cleaning port and the outer peripheral surface of the insertion portion at a position closer to the center of the joint body than the first seal member. Cleaning mouth fitting. 前記挿入部の外周面は、前記第１シール部材よりも前記継手本体の中心側の位置において、前記掃除口部の内周面側に突出していないことを特徴とする請求項３記載の掃除口継手。   The cleaning port according to claim 3, wherein the outer peripheral surface of the insertion portion does not protrude toward the inner peripheral surface of the cleaning port at a position closer to the center of the joint body than the first seal member. Fittings.
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