JP4621520B2

JP4621520B2 - Water fittings and faucets

Info

Publication number: JP4621520B2
Application number: JP2005075658A
Authority: JP
Inventors: 浩二池田; 真明柴田
Original assignee: 株式会社ケーブイケー
Priority date: 2005-03-16
Filing date: 2005-03-16
Publication date: 2011-01-26
Anticipated expiration: 2025-03-16
Also published as: JP2006258182A

Description

本発明は、合成樹脂製の連結管と、外周に雄ねじ部を有する接続部を備えた水道用機器の同接続部とを接続する水道用継手、及び、水栓本体と、同水栓本体に接続された連結管とを備えるとともに同連結管の端部に同水道用継手が装着される水栓に関するものである。 The present invention relates to a water pipe joint for connecting a connecting pipe made of a synthetic resin and the same connection part of a water supply device having a connection part having an external thread part on the outer periphery, a faucet body, and the faucet body. The present invention relates to a water faucet provided with a connected connecting pipe and fitted with a joint for the water supply at an end of the connecting pipe.

従来、この種の継手としては、特許文献１に記載されたものがある。この継手は、合成樹脂製の連結管の端部内周に挿入されるとともに接続部の水路開口端に当接される略円筒状の接手、連結管に外嵌されるリング状のストッパ、接続部の外周に設けられた雄ねじ部に螺合されるとともにストッパを締め付ける略円筒状の接手ケース、及び、接続部の水路開口端と接手との間に介在されるパッキンから構成されている。接手の外周は、基端側（接続部側）ほど拡開するテーパ状となっている。この継手により、連結管と接続部とを接続するには、まず、接手を連結管の端部内周に差し込む。このとき、テーパ状の接手を連結管の端部内周に無理に押し込んで連結管を拡開させなければならないので、接手を連結管に容易に差し込むことはできない。 Conventionally, as this type of joint, there is one described in Patent Document 1. This joint is inserted into the inner periphery of the end of the connecting pipe made of synthetic resin, and has a substantially cylindrical joint that comes into contact with the water channel opening end of the connecting section, a ring-shaped stopper that is fitted around the connecting pipe, and a connecting section It is composed of a substantially cylindrical joint case that is screwed into a male thread portion provided on the outer periphery of the joint and tightens a stopper, and a packing that is interposed between the water channel opening end of the connection portion and the joint. The outer periphery of the joint has a tapered shape that expands toward the base end side (connection portion side). In order to connect the connecting pipe and the connecting portion with this joint, first, the joint is inserted into the inner periphery of the end of the connecting pipe. At this time, since the tapered joint must be forcedly pushed into the inner periphery of the end of the connecting pipe to expand the connecting pipe, the joint cannot be easily inserted into the connecting pipe.

また、特許文献２には、ホースと、パイプ等の接続部とを接続するジョイントが記載されている。このジョイントは、パイプにろう付けされるプラグと、一端側にプラグが接続されるとともに他端側にホースが接続されるソケットとを備えている。そして、ソケットの一端に係止させたナットを、プラグの外周に設けた雄ねじ部に螺合させることで、プラグにソケットが接続される。また、ホースの端部外周にナットを螺合させ、ソケットの他端側外周に設けた雄ねじ部をホースの端部内周にねじ込むことにより、ナットとソケットとの間にホースの端部を挟持する。このとき、ソケットの他端側外周に雄ねじ部を設けているので、ソケットを回すことにより雄ねじ部のねじ作用によってソケットの他端側をホースの端部内周に対して容易に挿入することができる。従って、このジョイントの構造を特許文献１の継手に応用すれば、ホースの端部に接手を容易に差し込むことができる。
特開平５−１４１５７８号公報（第１頁〜３頁、第１図〜４図）実公平７−３８７９０号公報（第１頁〜３頁、第１図〜４図） Patent Document 2 describes a joint that connects a hose and a connecting portion such as a pipe. The joint includes a plug brazed to the pipe and a socket to which the plug is connected to one end and a hose is connected to the other end. And a socket is connected to a plug by screwing the nut latched by the end of the socket to the external thread part provided in the outer periphery of the plug. Also, the end of the hose is sandwiched between the nut and the socket by screwing the nut into the outer periphery of the end of the hose and screwing the male screw provided on the outer periphery of the other end of the socket into the inner periphery of the end of the hose. . At this time, since the male screw portion is provided on the outer periphery of the other end side of the socket, the other end side of the socket can be easily inserted into the inner periphery of the end portion of the hose by rotating the socket. . Therefore, if this joint structure is applied to the joint of Patent Document 1, a joint can be easily inserted into the end of the hose.
JP-A-5-141578 (pages 1 to 3, FIGS. 1 to 4) Japanese Utility Model Publication No. 7-38790 (pages 1 to 3, FIGS. 1 to 4)

しかしながら、上記特許文献２のジョイントは、プラグに対するソケットの接続と、ホースに対するソケットの接続とをそれぞれ別の部材を用いて行っているので、部品点数が多く、その分だけ組立工数が多く必要となる。 However, since the joint of Patent Document 2 uses a different member for connecting the socket to the plug and connecting the socket to the hose, the number of parts is large, and the number of assembly steps is required accordingly. Become.

本発明は、このような従来の技術に存在する問題点に着目してなされたものである。その目的とするところは、合成樹脂製の連結管と、外周に雄ねじ部を有する接続部を備えた水道用機器の同接続部とを接続する水道用継手とを接続する水道用継手において、接続を容易に行うことができるようにし、しかも、部品点数及び組付工数を削減することにある。また、部品点数及び組立工数が少なく設置が容易な水栓を提供することにある。 The present invention has been made paying attention to such problems existing in the prior art. The purpose is to connect a joint pipe made of synthetic resin and a joint for water supply that connects a joint for water supply with a connection part having a male thread part on the outer periphery. It is to reduce the number of parts and assembly man-hours. It is another object of the present invention to provide a faucet that can be easily installed with a reduced number of parts and assembly steps.

上記の目的を達成するために、請求項１に記載の発明は、合成樹脂製の連結管と、外周に雄ねじ部を有する接続部を備えた水道用機器の同接続部とを接続する水道用継手であって、前記連結管の端部内周に挿入されるインコアと、同インコアの端部に設けられるとともに前記接続部の水路開口端に当接されるフランジ部とを備えた内側部材と、前記インコアが連結管の端部に挿入された前記内側部材に外嵌可能な略円筒状に形成されるとともに前記接続部の雄ねじ部に螺合する雌ねじ部が設けられた外側部材とからなり、前記インコアの外周には、連結管の端部内周にねじ込み可能とされたテーパ状の雄ねじ部が形成され、前記外側部材の内周には、同雄ねじ部に外嵌可能とされた環状の押圧部が形成され、前記外側部材の雌ねじ部を前記接続部の雄ねじ部に螺合させることにより、前記内側部材のフランジ部を接続部の水路開口端に当接させるとともに外側部材の押圧部と内側部材の雄ねじ部との間で連結管を挟持するようにし、前記内側部材の外周において前記雄ねじ部よりもフランジ部側には、前記外側部材の内周に密接するように第１シールが設けられ、外側部材の内周には、内側部材のインコアに外嵌された連結管の外周に対して雄ねじ部よりもフランジ部側とは反対側で密接するように第２シールが設けられていることを特徴とする。 In order to achieve the above-mentioned object, the invention according to claim 1 is for a water service for connecting a connecting pipe made of a synthetic resin and the same connection part of a water supply device having a connection part having a male screw part on the outer periphery. An inner member provided with an in-core inserted into the inner periphery of the end portion of the connecting pipe, and a flange portion provided at an end portion of the in-core and abutted against a water channel opening end of the connection portion; The in-core is formed in a substantially cylindrical shape that can be fitted to the inner member inserted into the end of the connecting pipe, and an outer member provided with a female screw portion that is screwed into the male screw portion of the connecting portion, A tapered male threaded portion that can be screwed into the inner periphery of the end of the connecting pipe is formed on the outer periphery of the in-core, and an annular press that can be externally fitted to the outer threaded member on the inner periphery of the outer member. Is formed, and the female thread portion of the outer member is The flange portion of the inner member is brought into contact with the water channel opening end of the connection portion, and the connecting tube is sandwiched between the pressing portion of the outer member and the male screw portion of the inner member. In the outer periphery of the inner member, a first seal is provided on the flange portion side of the outer thread portion so as to be in close contact with the inner periphery of the outer member. A second seal is provided so as to be in close contact with the outer periphery of the externally connected connecting pipe on the side opposite to the flange side with respect to the male screw part .

請求項２に記載の発明は、合成樹脂製の連結管と、外周に雄ねじ部を有する接続部を備えた水道用機器の同接続部とを接続する水道用継手であって、前記連結管の端部内周に挿入されるインコアと、同インコアの端部に設けられるとともに前記接続部の水路開口端に当接されるフランジ部とを備えた内側部材と、前記インコアが連結管の端部に挿入された前記内側部材に外嵌可能な略円筒状に形成されるとともに前記接続部の雄ねじ部に螺合する雌ねじ部が設けられた外側部材とからなり、前記インコアの外周には、連結管の端部内周にねじ込み可能とされたテーパ状の雄ねじ部が形成され、前記外側部材の内周には、同雄ねじ部に外嵌可能とされた環状の押圧部が形成され、前記外側部材の雌ねじ部を前記接続部の雄ねじ部に螺合させることにより、前記内側部材のフランジ部を接続部の水路開口端に当接させるとともに外側部材の押圧部と内側部材の雄ねじ部との間で連結管を挟持するようにし、前記フランジ部の外周には、滑り止め用のローレットが形成されていることを特徴とする。
請求項３に記載の発明は、合成樹脂製の連結管と、外周に雄ねじ部を有する接続部を備えた水道用機器の同接続部とを接続する水道用継手であって、前記連結管の端部内周に挿入されるインコアと、同インコアの端部に設けられるとともに前記接続部の水路開口端に当接されるフランジ部とを備えた内側部材と、前記インコアが連結管の端部に挿入された前記内側部材に外嵌可能な略円筒状に形成されるとともに前記接続部の雄ねじ部に螺合する雌ねじ部が設けられた外側部材とからなり、前記インコアの外周には、連結管の端部内周にねじ込み可能とされたテーパ状の雄ねじ部が形成され、前記外側部材の内周には、同雄ねじ部に外嵌可能とされた環状の押圧部が形成され、前記外側部材の雌ねじ部を前記接続部の雄ねじ部に螺合させることにより、前記内側部材のフランジ部を接続部の水路開口端に当接させるとともに外側部材の押圧部と内側部材の雄ねじ部との間で連結管を挟持するようにし、前記内側部材の水路におけるフランジ部側の開口端側には、内側部材の軸線方向に延びる断面多角形の孔部が設けられている。 Invention of Claim 2 is a coupling for waterworks which connects the connecting pipe made from a synthetic resin , and the same connection part of the water supply apparatus provided with the connection part which has an external thread part on the outer periphery, Comprising: An inner member provided with an in-core inserted into the inner periphery of the end, a flange provided at the end of the in-core and abutted against the water channel opening end of the connecting portion, and the in-core at the end of the connecting pipe An outer member formed in a substantially cylindrical shape that can be externally fitted to the inserted inner member and provided with a female screw portion that is screwed into the male screw portion of the connecting portion. A tapered male screw portion that can be screwed is formed on the inner periphery of the end portion, and an annular pressing portion that can be fitted on the male screw portion is formed on the inner periphery of the outer member. Screw the female thread part into the male thread part of the connecting part. Accordingly, so as to sandwich the connecting pipe between the external thread portion of the pressing portion and the inner member in the outer member is brought into contact with the flange portion of the inner member to the waterway opening end of the connecting portion, the outer periphery of the flange portion A knurling for preventing slipping is formed.
Invention of Claim 3 is a coupling for waterworks which connects the connecting pipe made of a synthetic resin and the same connecting part of the equipment for water supply provided with the connection part which has an external thread part in the outer periphery, Comprising: An inner member provided with an in-core inserted into the inner periphery of the end, a flange provided at the end of the in-core and abutted against the water channel opening end of the connecting portion, and the in-core at the end of the connecting pipe An outer member formed in a substantially cylindrical shape that can be externally fitted to the inserted inner member and provided with a female screw portion that is screwed into the male screw portion of the connecting portion. A tapered male screw portion that can be screwed is formed on the inner periphery of the end portion, and an annular pressing portion that can be fitted on the male screw portion is formed on the inner periphery of the outer member. Screw the female thread part into the male thread part of the connecting part. Accordingly, so as to sandwich the connecting pipe between the external thread portion of the pressing portion and the inner member in the outer member is brought into contact with the flange portion of the inner member to the waterway opening end of the connecting portion, the flange of the waterways of the inner member On the opening end side on the part side, a hole having a polygonal cross section extending in the axial direction of the inner member is provided.

請求項４に記載の発明は、請求項３に記載の発明において、前記外側部材に対して雌ねじ部側の開口部を塞ぐように着脱自在に装着される保護キャップを備え、この保護キャップは、前記内側部材の孔部に対してその軸線方向に嵌合可能とされた嵌合部と、手で把持されるとともに同嵌合部をその軸線回りに回すための基部とを備えていることを特徴とする。 According to a fourth aspect of the present invention, in the third aspect of the present invention, the invention further includes a protective cap that is detachably attached to the outer member so as to close the opening on the female screw portion side. A fitting portion that can be fitted in the axial direction with respect to the hole portion of the inner member; and a base portion that is gripped by a hand and that rotates the fitting portion around the axis. Features.

請求項５に記載の発明は、台上に設置される水栓本体と、同水栓本体からその台下に延長される合成樹脂製の連結管と、同連結管の端部に装着される継手とからなる水栓であって、前記継手を、請求項１〜請求項４のいずれか一項に記載の水道用継手としたことを特徴とする。 The invention according to claim 5 is attached to a faucet body installed on a table, a synthetic resin connecting pipe extending from the faucet body to the base, and an end of the connecting pipe. A water faucet comprising a joint, wherein the joint is the water supply joint according to any one of claims 1 to 4 .

（作用）
請求項１に記載の発明によれば、インコアの外周に設けたテーパ状の雄ねじ部のねじ作用によって、合成樹脂製の連結管の端部内周にインコアをねじ込むことができる。同時に、連結管の端部内周へ雄ねじ部が食い込むことにより、インコアと連結管との接続部分が水密状態となる。さらに、内側部材に外嵌した外側部材の押圧部と、インコアの雄ねじ部との間で連結管の端部が挟持される。このため、インコアと連結管との当接部分が確実に水密状態となる。また、水道用機器の接続部の外周に螺合する外側部材により、インコアと共に連結管が接続部に固定される。このため、内側部材及び外側部材のみにより、連結管と接続部とが接続される。 (Function)
According to the first aspect of the present invention, the incore can be screwed into the inner periphery of the end portion of the connecting pipe made of synthetic resin by the screw action of the tapered male screw portion provided on the outer periphery of the incore. At the same time, the male thread portion bites into the inner periphery of the end portion of the connecting pipe, so that the connection portion between the in-core and the connecting pipe is in a watertight state. Further, the end portion of the connecting pipe is sandwiched between the pressing portion of the outer member fitted on the inner member and the male screw portion of the in-core. For this reason, the contact part of an in-core and a connection pipe will be in a watertight state reliably. Moreover, a connection pipe is fixed to a connection part with an in-core by the outer member screwed together by the outer periphery of the connection part of water supply apparatus. For this reason, a connecting pipe and a connection part are connected only by an inner member and an outer member.

そして、内側部材の外周において雄ねじ部よりもフランジ部側に設けられた第１シールが、外側部材の内周に密接する。また、外側部材の内周に設けられた第２シールが、内側部材のインコアに外嵌された連結管の外周に対して雄ねじ部よりも反フランジ部側で密接する。この両シールにより、内側部材と外側部材との間において、内側部材と連結管との当接部分が外部から密封される。このため、内側部材と連結管との間の水密状態が向上する。 And the 1st seal | sticker provided in the flange part side rather than the external thread part in the outer periphery of an inner member closely_contact | adheres to the inner periphery of an outer member. Further, the second seal provided on the inner periphery of the outer member is in close contact with the outer periphery of the connecting tube fitted on the inner core of the inner member on the side opposite to the flange portion rather than the male screw portion. With these two seals, the contact portion between the inner member and the connecting pipe is sealed from the outside between the inner member and the outer member. For this reason, the watertight state between the inner member and the connecting pipe is improved.

請求項２に記載の発明によれば、インコアの外周に設けたテーパ状の雄ねじ部のねじ作用によって、合成樹脂製の連結管の端部内周にインコアをねじ込むことができる。同時に、連結管の端部内周へ雄ねじ部が食い込むことにより、インコアと連結管との接続部分が水密状態となる。さらに、内側部材に外嵌した外側部材の押圧部と、インコアの雄ねじ部との間で連結管の端部が挟持される。このため、インコアと連結管との当接部分が確実に水密状態となる。また、水道用機器の接続部の外周に螺合する外側部材により、インコアと共に連結管が接続部に固定される。このため、内側部材及び外側部材のみにより、連結管と接続部とが接続される。加えて、内側部材のフランジ部を手で把持して内側部材を回し、インコアの雄ねじ部を連結管の端部内周にねじ作用によりねじ込むときに、フランジ部の外周に設けられたローレットによりフランジ部に対する手の滑りが防止される。このため、内側部材のインコアを、連結管の端部内周により容易にねじ込むことができる。 According to the second aspect of the present invention, the incore can be screwed into the inner periphery of the end portion of the connecting pipe made of synthetic resin by the screw action of the tapered male screw portion provided on the outer periphery of the incore. At the same time, the male thread portion bites into the inner periphery of the end portion of the connecting pipe, so that the connection portion between the in-core and the connecting pipe is in a watertight state. Further, the end portion of the connecting pipe is sandwiched between the pressing portion of the outer member fitted on the inner member and the male screw portion of the in-core. For this reason, the contact part of an in-core and a connection pipe will be in a watertight state reliably. Moreover, a connection pipe is fixed to a connection part with an in-core by the outer member screwed together by the outer periphery of the connection part of water supply apparatus. For this reason, a connecting pipe and a connection part are connected only by an inner member and an outer member. In addition, when the inner member is rotated by gripping the flange portion of the inner member by hand and the male screw portion of the in-core is screwed into the inner periphery of the end portion of the connecting pipe by a screw action, the flange portion is provided by the knurling provided on the outer periphery of the flange portion Hand slipping against is prevented. For this reason, the in-core of the inner member can be easily screwed into the end portion inner periphery of the connecting pipe.

請求項３に記載の発明によれば、インコアの外周に設けたテーパ状の雄ねじ部のねじ作用によって、合成樹脂製の連結管の端部内周にインコアをねじ込むことができる。同時に、連結管の端部内周へ雄ねじ部が食い込むことにより、インコアと連結管との接続部分が水密状態となる。さらに、内側部材に外嵌した外側部材の押圧部と、インコアの雄ねじ部との間で連結管の端部が挟持される。このため、インコアと連結管との当接部分が確実に水密状態となる。また、水道用機器の接続部の外周に螺合する外側部材により、インコアと共に連結管が接続部に固定される。このため、内側部材及び外側部材のみにより、連結管と接続部とが接続される。加えて、内側部材のインコアを連結管の端部内周にねじ込むときに、内側部材の水路におけるフランジ部側の開口端側に設けられた孔部に、同孔部と同じ断面形状の器具を挿入し、この器具を介して内側部材を回すことができる。このため、内側部材のインコアを、連結管の端部内周により容易にねじ込むことができる。 According to the invention described in claim 3 , the incore can be screwed into the inner periphery of the end portion of the connecting pipe made of synthetic resin by the screw action of the tapered male screw portion provided on the outer periphery of the incore. At the same time, the male thread portion bites into the inner periphery of the end portion of the connecting pipe, so that the connection portion between the in-core and the connecting pipe is in a watertight state. Further, the end portion of the connecting pipe is sandwiched between the pressing portion of the outer member fitted on the inner member and the male screw portion of the in-core. For this reason, the contact part of an in-core and a connection pipe will be in a watertight state reliably. Moreover, a connection pipe is fixed to a connection part with an in-core by the outer member screwed together by the outer periphery of the connection part of water supply apparatus. For this reason, a connecting pipe and a connection part are connected only by an inner member and an outer member. In addition, when the in-core of the inner member is screwed into the inner periphery of the end of the connecting pipe, a device having the same cross-sectional shape as the hole is inserted into the hole provided on the flange end side of the water channel of the inner member However, the inner member can be turned through this instrument. For this reason, the in-core of the inner member can be easily screwed into the end portion inner periphery of the connecting pipe.

請求項４に記載の発明によれば、外側部材に着脱自在に装着される保護キャップにより、連結管に接続する前の継手の内側に塵埃等の異物が付着することが防止される。また、連結管の端部に内側部材のインコアを挿入するときに、内側部材の孔部に保護キャップの嵌合部を差し込むことにより、保護キャップの基部を手で把持して保護キャップとともに内側部材を回転させ、インコアの雄ねじ部を連結管の端部に容易にねじ込むことができる。このため、水栓を設置する際に工具を用意する必要がなく、継手に装着されている保護キャップを用いて作業を円滑に行うことができる。 According to the fourth aspect of the present invention, the protective cap that is detachably attached to the outer member prevents foreign matters such as dust from adhering to the inside of the joint before being connected to the connecting pipe. Further, when inserting the in-core of the inner member into the end of the connecting pipe, the base member of the protective cap is gripped by hand by inserting the fitting portion of the protective cap into the hole of the inner member, and the inner member together with the protective cap. And the male screw part of the in-core can be easily screwed into the end part of the connecting pipe. For this reason, it is not necessary to prepare a tool when installing the water faucet, and the work can be smoothly performed using the protective cap attached to the joint.

請求項５に記載の発明によれば、台上に設置された水栓本体から台下に延長された連結管の端部と、止水栓、逆止弁、ストレーナ及び浄水器等の水道用機器の接続部とを、請求項１〜請求項４のいずれか一項に記載の作用をなす継手により接続することができる。 According to the invention described in claim 5 , the end of the connecting pipe extending from the faucet body installed on the base to the base, and for water supply such as a stop cock, a check valve, a strainer and a water purifier The connection part of an apparatus can be connected by the coupling which makes | forms an effect | action as described in any one of Claims 1-4 .

本発明の水道用継手によれば、インコアの外周にテーパ状の雄ねじ部を設け、この雄ねじ部のねじ作用によってインコアを連結管の端部内周にねじ込むようにした。このため、継手と連結管との接続が容易となる。しかも、水道用機器における接続部の外周の雄ねじ部に雌ねじ部が螺合する外側部材により、インコアと共に連結管を接続部材に固定するようにした。このため、内側部材及び外側部材のみにより連結管と接続部とを接続できるので、部品点数及び組立工数が少なくなる。また、上記のような作用効果を有する継手を用いて、水栓本体に接続された連結管の端部を水道用機器の接続部に接続できるので、水栓の部品点数及び組立工数が少なくなり、その設置が容易となる。 According to the water supply joint of the present invention, a tapered male screw portion is provided on the outer periphery of the incore, and the incore is screwed into the inner periphery of the end portion of the connecting pipe by the screw action of the male screw portion. For this reason, the connection between the joint and the connecting pipe becomes easy. In addition, the connecting pipe is fixed to the connecting member together with the in-core by an outer member in which the female screw part is screwed into the male screw part on the outer periphery of the connection part in the water supply device. For this reason, since a connection pipe and a connection part can be connected only by an inner member and an outer member, the number of parts and assembly man-hours decrease. In addition, since the end of the connecting pipe connected to the faucet body can be connected to the connection part of the water supply device using the joint having the above-described effects, the number of faucet parts and assembly man-hours are reduced. The installation becomes easy.

次に、本発明を具体化した一実施形態を図１〜図７に従って説明する。
図２は、例えば台としての流し台１上の取付孔２に設置された水栓本体としての混合水栓本体１０と、同流し台１下に設けられた水道用機器としての給水側止水栓１１及び給湯側止水栓１２にそれぞれ接続された継手１３とを示している。混合水栓本体１０と各継手１３とは、架橋ポリエチレン製又はポリブテン製の可撓性を有する連結管１４によりそれぞれ連結されている。なお、給水側止水栓１１及び給湯側止水栓１２の他端には、それぞれ図示しない給水管及び給湯管が接続されている。この実施形態では、混合水栓本体１０、両継手１３及び連結管１４が水栓３を構成している。なお、水道用機器としては、給水側止水栓１１及び給湯側止水栓１２以外にも、逆止弁、ストレーナ又は浄水器単体や、止水栓、逆止弁、ストレーナ及び浄水器のうちの少なくとも２つが一体化されたものがある。 Next, an embodiment of the present invention will be described with reference to FIGS.
FIG. 2 shows, for example, a mixing faucet body 10 as a faucet body installed in a mounting hole 2 on a sink 1 as a base, and a water supply side faucet 11 as a water supply device provided under the sink 1. And a joint 13 connected to each of the hot water supply stop cocks 12. The mixed faucet body 10 and each joint 13 are connected by a flexible connecting pipe 14 made of crosslinked polyethylene or polybutene. A water supply pipe and a hot water supply pipe (not shown) are connected to the other ends of the water supply side stop cock 11 and the hot water supply stop cock 12, respectively. In this embodiment, the mixing faucet body 10, both joints 13 and the connecting pipe 14 constitute the faucet 3. In addition to the water supply stop valve 11 and the hot water supply stop valve 12, the water supply equipment includes a check valve, a strainer or a water purifier alone, a water stop cock, a check valve, a strainer and a water purifier. There is one in which at least two of these are integrated.

図２に示すように、混合水栓本体１０の胴部１５には、取付孔２内に配置されるとともに下方に延出する給水側接続部１６及び給湯側接続部１７が設けられ、各接続部１６，１７にそれぞれ連結管１４が接続されている。図４に示すように、各連結管１４は、それぞれ前記各接続部１６，１７に外嵌され、その外周にさらにスリーブ１８が外嵌されて締め付けられることで各接続部１６，１７に接続されている。なお、この明細書においては、図２における上下方向を各水栓１０〜１２における上下方向として説明する。 As shown in FIG. 2, the body portion 15 of the mixing faucet body 10 is provided with a water supply side connection portion 16 and a hot water supply side connection portion 17 that are arranged in the mounting hole 2 and extend downward, and each connection The connecting pipe 14 is connected to each of the parts 16 and 17. As shown in FIG. 4, each connecting pipe 14 is externally fitted to each of the connecting parts 16 and 17, and a sleeve 18 is further externally fitted to the outer periphery thereof and tightened to be connected to the connecting parts 16 and 17. ing. In addition, in this specification, the up-down direction in FIG. 2 is demonstrated as the up-down direction in each faucet 10-12.

次に、継手１３の構成について詳述する。図２に示すように、継手１３は、連結管１４の下端部を、止水栓１１，１２の各接続部１９に接続する。各接続部１９は水路開口端１９ａを有するとともに、その外周には、継手１３を接続するための雄ねじ部１９ｂが設けられている。図３に示すように、継手１３は、水路を形成する略円筒状の内側部材２０と、この内側部材２０に外嵌される略円筒状の外側部材２１とからなる。 Next, the configuration of the joint 13 will be described in detail. As shown in FIG. 2, the joint 13 connects the lower end portion of the connecting pipe 14 to the connection portions 19 of the water stopcocks 11 and 12. Each connection portion 19 has a water channel opening end 19a, and a male screw portion 19b for connecting the joint 13 is provided on the outer periphery thereof. As shown in FIG. 3, the joint 13 includes a substantially cylindrical inner member 20 that forms a water channel, and a substantially cylindrical outer member 21 that is fitted on the inner member 20.

内側部材２０は、連結管１４の端部内周に挿入される円筒状のインコア２２と、インコア２２の下端部外周に設けられるフランジ部２３とを備えている。図１及び図３に示すように、インコア２２の外周には、連結管１４の端部内周にねじ込み可能とされた雄ねじ部２４が形成されている。雄ねじ部２４は、フランジ部２３側ほど拡開するテーパ状に形成されている。また、インコア２２とフランジ部２３との間には段部２５が形成され、この段部２５には周溝２６が形成されている。周溝２６には、外側部材２１の内周面に密接する第１シールとしてのＯリング２７が装着されている。フランジ部２３の外周には、滑り止め用のローレット２３ａが設けられている。また、内側部材２０の水路２０ａにおけるフランジ部２３側の開口部側には、内側部材２０の軸線方向に延びる断面六角形の孔部２０ｂが設けられている。さらに、フランジ部２３の下側外周には段差部２３ｂが設けられ、この段差部２３ｂには、パッキン２８が装着されている。 The inner member 20 includes a cylindrical incore 22 that is inserted into the inner periphery of the end of the connecting pipe 14 and a flange portion 23 that is provided on the outer periphery of the lower end of the incore 22. As shown in FIGS. 1 and 3, a male screw portion 24 that can be screwed into the inner periphery of the end portion of the connecting pipe 14 is formed on the outer periphery of the in-core 22. The male screw portion 24 is formed in a tapered shape that expands toward the flange portion 23 side. A step portion 25 is formed between the in-core 22 and the flange portion 23, and a circumferential groove 26 is formed in the step portion 25. An O-ring 27 as a first seal that is in close contact with the inner peripheral surface of the outer member 21 is attached to the circumferential groove 26. An anti-slip knurling 23 a is provided on the outer periphery of the flange portion 23. In addition, a hexagonal hole 20b having a cross section extending in the axial direction of the inner member 20 is provided on the opening side of the water channel 20a of the inner member 20 on the flange portion 23 side. Further, a step portion 23b is provided on the lower outer periphery of the flange portion 23, and a packing 28 is attached to the step portion 23b.

図３に示すように、外側部材２１は、インコア２２が連結管１４の端部に挿入された内側部材２０に外嵌されている。外側部材２１の上部内周には、インコア２２の雄ねじ部２４に外嵌可能とされた環状の押圧部２９が設けられている。また、外側部材２１の下部内周には、各止水栓１１，１２の接続部１９の雄ねじ部１９ｂに螺合可能とされた雌ねじ部３０が設けられている。押圧部２９と雌ねじ部３０との間には、内側部材２０の段部２５に対面するとともにＯリング２７が密接する段部３１が設けられている。また、外側部材２１の上端側内周には周溝３２が設けられ、この周溝３２には第２シールとしてのＯリング３３が装着されている。このＯリング３３は、内側部材２０のインコア２２に外嵌された連結管１４の外周面に対して雄ねじ部２４よりもフランジ部２３側とは反対側で密接するようになっている。 As shown in FIG. 3, the outer member 21 is externally fitted to the inner member 20 in which the in-core 22 is inserted into the end portion of the connecting pipe 14. An annular pressing portion 29 that can be externally fitted to the male screw portion 24 of the in-core 22 is provided on the upper inner periphery of the outer member 21. Further, a female threaded portion 30 that can be screwed into the male threaded portion 19 b of the connecting portion 19 of each water stopcock 11, 12 is provided on the lower inner periphery of the outer member 21. Between the pressing portion 29 and the female screw portion 30, a step portion 31 that faces the step portion 25 of the inner member 20 and is in close contact with the O-ring 27 is provided. Further, a circumferential groove 32 is provided on the inner periphery on the upper end side of the outer member 21, and an O-ring 33 as a second seal is attached to the circumferential groove 32. The O-ring 33 is adapted to be in close contact with the outer peripheral surface of the connecting pipe 14 fitted on the in-core 22 of the inner member 20 on the side opposite to the flange portion 23 side with respect to the male screw portion 24.

図５（ａ）は、継手１３に対して着脱自在に装着される保護キャップ３４を示している。この保護キャップ３４は合成樹脂により形成され、連結管１４に接続される前の継手１３に取り付けられている。流し台１に設置される前の水栓３においては、混合水栓本体１０に一対の連結管１４が接続されている一方、継手１３は各連結管１４に接続されていない。これは、継手１３は、流し台１に設けられた取付孔２に通らないためである。このため、継手１３は、水栓３の設置時に、取付孔２に通された各連結管１４に対し流し台１の下で装着される。 FIG. 5A shows a protective cap 34 that is detachably attached to the joint 13. The protective cap 34 is made of synthetic resin and is attached to the joint 13 before being connected to the connecting pipe 14. In the faucet 3 before being installed on the sink 1, a pair of connecting pipes 14 are connected to the mixed faucet body 10, while the joint 13 is not connected to each connecting pipe 14. This is because the joint 13 does not pass through the mounting hole 2 provided in the sink 1. For this reason, the joint 13 is attached under the sink 1 to each connecting pipe 14 passed through the mounting hole 2 when the faucet 3 is installed.

保護キャップ３４は、外側部材２１の雌ねじ部３０側の開口部を塞ぐ円板状の基部３５と、この基部３５の上面に設けられた円筒部３６と、基部３５の上面中央に立設された円柱状の軸部３７とを備えている。基部３５の外周面には滑り止め用のローレット３５ａが設けられ、このローレット３５ａにより基部３５を手で把持して軸部３７をその軸線回りに回すことができるようになっている。円筒部３６の外周には、外側部材２１の雌ねじ部３０に螺合する雄ねじ部３６ａが形成されている。軸部３７の先端は同軸部３７の軸線方向に延びる断面正六角形の嵌合部３７ａとされ、この嵌合部３７ａは内側部材２０の孔部２０ｂに嵌合可能とされている。すなわち、嵌合部３７ａは、基部３５が回されることによりその軸線回りに回される。保護キャップ３４は、図５（ｂ）に示すように、軸部３７の嵌合部３７ａが内側部材２０の孔部２０ｂに嵌合された状態で円筒部３６の雄ねじ部３６ａが外側部材２１の雌ねじ部３０に螺合されることにより、継手１３に装着されている。従って、保護キャップ３４により、連結管１４に接続される前の継手１３の内側に、塵埃等の異物が付着することが防止される。 The protective cap 34 is erected at the center of the upper surface of the base 35, a disk-shaped base 35 that closes the opening of the outer member 21 on the female screw portion 30 side, a cylindrical portion 36 provided on the upper surface of the base 35. A cylindrical shaft portion 37 is provided. An anti-slip knurl 35a is provided on the outer peripheral surface of the base 35. The knurl 35a allows the base 35 to be gripped by hand so that the shaft 37 can be rotated around the axis. On the outer periphery of the cylindrical portion 36, a male screw portion 36 a that is screwed into the female screw portion 30 of the outer member 21 is formed. The distal end of the shaft portion 37 is a fitting portion 37 a having a regular hexagonal cross section extending in the axial direction of the coaxial portion 37, and the fitting portion 37 a can be fitted into the hole portion 20 b of the inner member 20. That is, the fitting portion 37a is rotated around the axis line when the base portion 35 is rotated. As shown in FIG. 5B, the protective cap 34 has a male screw portion 36 a of the cylindrical portion 36 of the outer member 21 in a state where the fitting portion 37 a of the shaft portion 37 is fitted in the hole portion 20 b of the inner member 20. The joint 13 is mounted by being screwed to the female thread portion 30. Therefore, the protective cap 34 prevents foreign matter such as dust from adhering to the inside of the joint 13 before being connected to the connecting pipe 14.

次に、この実施形態の水栓３を設置する手順について説明する。
まず、混合水栓本体１０に接続されている両連結管１４を、流し台１の取付孔２から流し台１下まで挿通させる。そして、混合水栓本体１０を取付孔２に装着する。次に、流し台１の下方まで挿通された両連結管１４にそれぞれ外側部材２１を外嵌させ、外嵌させた外側部材２１を連結管１４の上方に移動させる。次に、図６に示すように、内側部材２０のインコア２２の上部（雄ねじ部２４よりも上側の部分）を連結管１４の端部内周に挿入する。この状態から、内側部材２０のフランジ部２３の外周を手で把持して内側部材２０を回転させ、雄ねじ部２４のねじ作用によりインコア２２を連結管１４の下端部内周にねじ込ませる。あるいは、内側部材２０の断面六角形の孔部２０ｂに保護キャップ３４における軸部３７の断面六角形の嵌合部３７ａを嵌合させ、この保護キャップ３４の基部３５を手で把持して保護キャップ３４とともに内側部材２０を回転させる。そして、雄ねじ部２４のねじ作用によりインコア２２を連結管１４の端部内周にねじ込ませる。このとき、内側部材２０のフランジ部２３、又は、保護キャップ３４の基部３５の外周面に設けられたローレット２３ａ，３５ａにより、内側部材２０又は保護キャップ３４に対する手の滑りが防止される。なお、保護キャップ３４は、インコア２２を連結管１４の内周にねじ込ませた後に内側部材２０から取り外す。こうして、連結管１４の下端部内周に内側部材２０のインコア２２を挿入することにより、図７に示すように、連結管１４の端部を内側部材２０の段部２５上面に当接させる。 Next, the procedure for installing the faucet 3 of this embodiment will be described.
First, both connecting pipes 14 connected to the mixing faucet body 10 are inserted from the mounting hole 2 of the sink 1 to the bottom of the sink 1. Then, the mixing faucet body 10 is mounted in the mounting hole 2. Next, the outer members 21 are externally fitted to both the connecting pipes 14 inserted to the lower side of the sink 1, and the outer members 21 that are externally fitted are moved above the connecting pipe 14. Next, as shown in FIG. 6, the upper part of the in-core 22 of the inner member 20 (the part above the male screw part 24) is inserted into the inner periphery of the end part of the connecting pipe 14. From this state, the outer periphery of the flange portion 23 of the inner member 20 is gripped by hand, the inner member 20 is rotated, and the incore 22 is screwed into the inner periphery of the lower end portion of the connecting pipe 14 by the screw action of the male screw portion 24. Alternatively, the hexagonal cross-section fitting portion 37a of the shaft portion 37 of the protective cap 34 is fitted into the hexagonal cross-section hole portion 20b of the inner member 20, and the base portion 35 of the protective cap 34 is gripped by hand to protect the cap. The inner member 20 is rotated together with 34. Then, the in-core 22 is screwed into the inner periphery of the end portion of the connecting pipe 14 by the screw action of the male screw portion 24. At this time, hand slipping with respect to the inner member 20 or the protective cap 34 is prevented by the knurls 23 a and 35 a provided on the outer peripheral surface of the flange portion 23 of the inner member 20 or the base portion 35 of the protective cap 34. The protective cap 34 is removed from the inner member 20 after the in-core 22 is screwed into the inner periphery of the connecting pipe 14. Thus, by inserting the in-core 22 of the inner member 20 into the inner periphery of the lower end portion of the connecting pipe 14, the end portion of the connecting pipe 14 is brought into contact with the upper surface of the step portion 25 of the inner member 20 as shown in FIG. 7.

次に、連結管１４に結合された内側部材２０の下端を止水栓１１，１２の接続部１９の各水路開口端１９ａに当接させ、内側部材２０の段差部２３ｂに装着したパッキン２８を接続部１９の各水路開口端１９ａに当接させる。この状態で、連結管１４の上方から外側部材２１を下方に移動させ、外側部材２１を内側部材２０に外嵌させる。そして、外側部材２１の雌ねじ部３０を、止水栓１１，１２の接続部１９の雄ねじ部１９ｂに螺合させる。このとき、外側部材２１のみが回され、内側部材２０及び連結管１４は回らない。これにより、図３に示すように、外側部材２１の段部３１の下面が、内側部材２０のフランジ部２３の上面に圧接される。 Next, the lower end of the inner member 20 coupled to the connecting pipe 14 is brought into contact with each water channel opening end 19a of the connection portion 19 of the water stopcocks 11 and 12, and the packing 28 attached to the step portion 23b of the inner member 20 is attached. It is made to contact | abut to each water channel opening end 19a of the connection part 19. FIG. In this state, the outer member 21 is moved downward from above the connecting pipe 14, and the outer member 21 is externally fitted to the inner member 20. Then, the female screw portion 30 of the outer member 21 is screwed into the male screw portion 19 b of the connection portion 19 of the water stopcocks 11 and 12. At this time, only the outer member 21 is rotated, and the inner member 20 and the connecting pipe 14 are not rotated. Thereby, as shown in FIG. 3, the lower surface of the step portion 31 of the outer member 21 is pressed against the upper surface of the flange portion 23 of the inner member 20.

すると、内側部材２０のフランジ部２３がパッキン２８を介して接続部１９の水路開口端１９ａに押し付けられるとともに、外側部材２１の押圧部２９と内側部材２０の雄ねじ部２４とにより連結管１４が挟持（弾性圧縮）される。この結果、連結管１４の水路と内側部材２０の水路２０ａとが水密状態で連通され、また、内側部材２０の水路２０ａと止水栓１１，１２の水路とが水密状態で連通される。また、内側部材２０の段部２５に設けられたＯリング２７が、外側部材２１の段部３１の内周に密接し、また、外側部材２１の内周に設けられたＯリング３３が、内側部材２０のインコア２２に嵌合した連結管１４の外周に密接する。この結果、両Ｏリング２７，３３により、内側部材２０の雄ねじ部２４と連結管１４の下端部との当接部分が外部から密封される。 Then, the flange portion 23 of the inner member 20 is pressed against the water channel opening end 19a of the connection portion 19 through the packing 28, and the connecting pipe 14 is sandwiched between the pressing portion 29 of the outer member 21 and the male screw portion 24 of the inner member 20. (Elastic compression). As a result, the water channel of the connecting pipe 14 and the water channel 20a of the inner member 20 are communicated in a watertight state, and the water channel 20a of the inner member 20 and the water channels of the stopcocks 11 and 12 are communicated in a watertight state. The O-ring 27 provided on the step portion 25 of the inner member 20 is in close contact with the inner periphery of the step portion 31 of the outer member 21, and the O-ring 33 provided on the inner periphery of the outer member 21 is The member 20 is in close contact with the outer periphery of the connecting pipe 14 fitted to the in-core 22 of the member 20. As a result, the contact portion between the male screw portion 24 of the inner member 20 and the lower end portion of the connecting pipe 14 is sealed from the outside by the O-rings 27 and 33.

以上の結果、連結管１４の下端部と止水栓１１，１２の接続部１６，１７とが継手１３によって接続され、水栓３の設置が完了する。そして、混合水栓本体１０を操作すると、給水側止水栓１１から継手１３及び連結管１４を介して混合水栓本体１０に水が供給され、また、給湯側止水栓１２から継手１３及び連結管１４を介して混合水栓本体１０に湯が供給される。 As a result, the lower end portion of the connecting pipe 14 and the connection portions 16 and 17 of the stop cocks 11 and 12 are connected by the joint 13, and the installation of the faucet 3 is completed. Then, when the mixing faucet body 10 is operated, water is supplied from the water supply side stop cock 11 to the mixing faucet body 10 via the joint 13 and the connecting pipe 14, and from the hot water supply side stop cock 12 to the joint 13 and Hot water is supplied to the mixed faucet body 10 through the connecting pipe 14.

上記のように構成された継手１３によれば、インコア２２の外周に設けたテーパ状の雄ねじ部２４のねじ作用によって、合成樹脂製の連結管１４の端部内周にインコア２２がねじ込まれる。同時に、連結管１４の端部内周へ雄ねじ部２４が食い込むことにより、インコア２２と連結管１４との当接部分が水密状態となる。さらに、内側部材２０に外嵌した外側部材２１の押圧部２９と、インコア２２の雄ねじ部２４との間で連結管１４の下端部が挟持される。このため、インコア２２と連結管１４との当接部分がより確実に水密状態となる。また、止水栓１１，１２の接続部１９の外周に螺合する外側部材２１により、インコア２２と共に連結管１４が接続部１９に固定される。このため、内側部材２０及び外側部材２１のみにより、連結管１４と接続部１９とを接続することができる。ゆえに、背景技術における特許文献２に記載のジョイントよりも部品点数が１つ少なくなるとともに、その分だけ組立工数が少なくなる。 According to the joint 13 configured as described above, the incore 22 is screwed into the inner periphery of the end portion of the synthetic resin connecting pipe 14 by the screw action of the tapered male screw portion 24 provided on the outer periphery of the incore 22. At the same time, the male threaded portion 24 bites into the inner periphery of the end of the connecting tube 14, so that the contact portion between the in-core 22 and the connecting tube 14 becomes watertight. Further, the lower end portion of the connecting pipe 14 is sandwiched between the pressing portion 29 of the outer member 21 fitted on the inner member 20 and the male screw portion 24 of the in-core 22. For this reason, the contact part of the in-core 22 and the connection pipe 14 will be in a watertight state more reliably. Further, the connecting pipe 14 is fixed to the connecting portion 19 together with the in-core 22 by an outer member 21 screwed onto the outer periphery of the connecting portion 19 of the water stopcocks 11 and 12. For this reason, the connecting pipe 14 and the connecting portion 19 can be connected only by the inner member 20 and the outer member 21. Therefore, the number of parts is reduced by one as compared with the joint described in Patent Document 2 in the background art, and the number of assembly steps is reduced accordingly.

また、内側部材２０の外周において雄ねじ部２４よりもフランジ部２３側に設けられたＯリング２７が、外側部材２１の内周に密接する。また、外側部材２１の内周に設けられたＯリング３３が、内側部材２０のインコア２２に外嵌された連結管１４の外周に対して雄ねじ部２４よりもフランジ部２３側とは反対側で密接する。そして、この両Ｏリング２７，３３により、内側部材２０と外側部材２１との間において内側部材２０と連結管１４との当接部分が外部から密封される。このため、内側部材２０と連結管１４との間の水密状態が向上する。 Further, an O-ring 27 provided closer to the flange portion 23 than the male screw portion 24 on the outer periphery of the inner member 20 is in close contact with the inner periphery of the outer member 21. In addition, an O-ring 33 provided on the inner periphery of the outer member 21 is on the opposite side of the male screw portion 24 from the flange portion 23 side with respect to the outer periphery of the connecting tube 14 fitted on the in-core 22 of the inner member 20. Closely. The contact portions between the inner member 20 and the connecting pipe 14 are sealed from the outside between the inner member 20 and the outer member 21 by the O-rings 27 and 33. For this reason, the watertight state between the inner member 20 and the connecting pipe 14 is improved.

また、内側部材２０のフランジ部２３を手で把持して内側部材２０を回し、インコア２２の雄ねじ部２４を連結管１４の端部内周にねじ作用によりねじ込む。このとき、フランジ部２３の外周に設けられたローレット２３ａにより、フランジ部２３に対する手の滑りが防止される。このため、内側部材２０のインコア２２を、連結管１４の端部内周により容易にねじ込むことができる。 Further, the inner member 20 is rotated by gripping the flange portion 23 of the inner member 20 by hand, and the male screw portion 24 of the in-core 22 is screwed into the inner periphery of the end portion of the connecting pipe 14 by a screw action. At this time, the knurling 23 a provided on the outer periphery of the flange portion 23 prevents the hand from sliding on the flange portion 23. For this reason, the in-core 22 of the inner member 20 can be easily screwed into the end portion inner periphery of the connecting pipe 14.

また、内側部材２０のインコア２２を連結管１４の端部内周にねじ込むときに、内側部材２０の水路におけるフランジ部２３側の開口端側に設けられた孔部２０ｂに、継手１３の保護キャップ３４の嵌合部３７ａを挿入し、保護キャップ３４を介して内側部材２０を回すことができる。従って、内側部材２０のフランジ部２３よりも大径の保護キャップ３４を回すことにより、連結管１４の端部内周に対してインコア２２をより容易にねじ込むことができる。また、水栓３を設置する際に工具を用意する必要がなく、継手１３に装着されている保護キャップ３４を用いて作業を円滑に行うことができる。 Further, when the in-core 22 of the inner member 20 is screwed into the inner periphery of the end of the connecting pipe 14, the protective cap 34 of the joint 13 is inserted into the hole 20 b provided on the opening end side of the flange 23 side of the water channel of the inner member 20. And the inner member 20 can be turned through the protective cap 34. Therefore, by turning the protective cap 34 having a larger diameter than the flange portion 23 of the inner member 20, the in-core 22 can be screwed more easily into the inner periphery of the end portion of the connecting pipe 14. Moreover, it is not necessary to prepare a tool when installing the faucet 3, and the work can be smoothly performed using the protective cap 34 attached to the joint 13.

さらに、流し台１上に設置された混合水栓本体１０から台下に延長された連結管１４の下端部と止水栓１１，１２とを、上記のような各作用をなす継手１３により接続することができる。このため、水栓３の部品点数及び組立工数が少なくなり、その設置が容易となる。 Furthermore, the lower end portion of the connecting pipe 14 extending downward from the mixing faucet body 10 installed on the sink 1 and the stop cocks 11 and 12 are connected by the joints 13 having the above-described actions. be able to. For this reason, the number of parts and assembly man-hours of the faucet 3 are reduced, and the installation thereof becomes easy.

なお、参考例として、図８に示すように、内側部材２０にＯリング２７を設けず、かつ、外側部材２１にＯリング３３を設けない構成としてもよい。
また、内側部材２０の孔部２０ｂの断面形状を三角形、四角形、五角形、又は、七角形以上の多角形としてもよい。あるいは、多角形に近似した断面形状としてもよい。 As a reference example, as shown in FIG. 8, the inner member 20 may not have the O-ring 27 and the outer member 21 may not have the O-ring 33.
The cross-sectional shape of the hole 20b of the inner member 20 may be a triangle, a quadrangle, a pentagon, or a polygon that is a heptagon or more. Or it is good also as a cross-sectional shape approximated to the polygon.

また、この発明の水栓３を、台上に設置される単水栓、ツーハンドル式湯水混合水栓、サーモスタット式水栓、シャワー引出式水栓等の水栓に具体化してもよい。
また、この発明の水栓３を、流し台１に限らず、洗面台、トイレ用手洗い台等において、その台上に設置される水栓として具体化してもよい。 Further, the faucet 3 of the present invention may be embodied in a faucet such as a single faucet installed on a table, a two-handle water / water mixing faucet, a thermostat faucet, a shower drawer faucet, or the like.
Further, the faucet 3 of the present invention is not limited to the sink 1, and may be embodied as a faucet installed on the basin in a wash basin, a toilet hand basin or the like.

以下、前記各実施形態から把握される技術的思想のうち、特許請求の範囲に記載した以外の技術的思想を記載する。
略円板状の基部（３５）の片面に円筒部（３６）を設けるとともにその外周に雄ねじ部（３６ａ）を形成し、同片面中央に軸部（３７）を立設させるとともに軸部の軸線方向に延びる断面多角形の嵌合部（３７ａ）をその先端部に設けたことを特徴とする水道用継手のための保護キャップ（３４）。 Hereinafter, technical ideas other than those described in the claims are described among the technical ideas grasped from the respective embodiments.
A cylindrical portion (36) is provided on one side of a substantially disc-shaped base (35), a male screw portion (36a) is formed on the outer periphery thereof, a shaft portion (37) is erected at the center of the one surface, and an axis of the shaft portion A protective cap (34) for a water supply joint, characterized in that a fitting portion (37a) having a polygonal cross section extending in the direction is provided at its tip.

一実施形態の水道用継手を示す分解斜視図。The disassembled perspective view which shows the coupling for water supply of one Embodiment. 水栓を示す一部を断面化した正面図。The front view which carried out the cross section of a part which shows a water faucet. 継手の要部を示す縦断面図。The longitudinal cross-sectional view which shows the principal part of a coupling. 水栓本体と連結管との接続部を示す分解斜視図。The disassembled perspective view which shows the connection part of a faucet main body and a connecting pipe. （ａ）は保護キャップを示す斜視図、（ｂ）は継手に装着された保護キャップを示す縦断面図。(A) is a perspective view which shows a protective cap, (b) is a longitudinal cross-sectional view which shows the protective cap with which the coupling was mounted | worn. 連結管に接続されるときの継手を示す縦断面図。The longitudinal cross-sectional view which shows a coupling when connected to a connecting pipe. 止水栓の接続部に接続されるときの継手を示す縦断面図。The longitudinal cross-sectional view which shows a coupling when connected to the connection part of a water stop cock. 継手の変形例を示す縦断面図。The longitudinal cross-sectional view which shows the modification of a coupling.

Explanation of symbols

１…台としての流し台、３…水栓、１０…水栓本体としての混合水栓本体、１１，１２…水道用機器としての止水栓、１３…（水道用）継手、１４…連結管、１９…接続部、１９ａ…水路開口端、１９ｂ…雄ねじ部、２０…内側部材、２０ｂ…孔部、２１…外側部材、２２…インコア、２３…フランジ部、２３ａ…ローレット、２４…雄ねじ部、２７…第１シールとしてのＯリング、２９…押圧部、３０…雌ねじ部、３３…第２シールとしてのＯリング、３４…保護キャップ、３５…基部、３６…円筒部、３６ａ…雄ねじ部、３７…軸部、３７ａ…嵌合部。 DESCRIPTION OF SYMBOLS 1 ... Sink stand as a stand, 3 ... Water faucet, 10 ... Mixing faucet body as a faucet body, 11, 12 ... Stop cock as water supply equipment, 13 ... (for water supply) joint, 14 ... Connection pipe, DESCRIPTION OF SYMBOLS 19 ... Connection part, 19a ... Water channel open end, 19b ... Male screw part, 20 ... Inner member, 20b ... Hole part, 21 ... Outer member, 22 ... In-core, 23 ... Flange part, 23a ... Knurl, 24 ... Male screw part, 27 ... O-ring as first seal, 29 ... Pressing part, 30 ... Female thread part, 33 ... O-ring as second seal, 34 ... Protective cap, 35 ... Base part, 36 ... Cylindrical part, 36a ... Male thread part, 37 ... Shaft part, 37a ... fitting part.

Claims

It is a joint for waterworks that connects a connecting pipe made of synthetic resin and the same connection part of a water supply device provided with a connection part having an external thread part on the outer periphery,
An inner member provided with an in-core inserted into an inner periphery of an end of the connecting pipe, and a flange provided at an end of the in-core and abutted against a water channel opening end of the connecting portion;
The in-core is formed in a substantially cylindrical shape that can be fitted to the inner member inserted into the end of the connecting pipe, and an outer member provided with a female screw portion that is screwed into the male screw portion of the connecting portion,
A tapered male threaded portion that can be screwed into the inner periphery of the end of the connecting pipe is formed on the outer periphery of the in-core, and an annular press that can be externally fitted to the outer threaded member on the inner periphery of the outer member. Part is formed,
By screwing the female thread portion of the outer member into the male thread portion of the connecting portion, the flange portion of the inner member is brought into contact with the water channel opening end of the connecting portion, and the pressing portion of the outer member and the male thread portion of the inner member are so as to sandwich the connecting pipe between the,
In the outer periphery of the inner member, on the flange portion side of the male screw portion, a first seal is provided so as to be in close contact with the inner periphery of the outer member,
A second seal is provided on the inner periphery of the outer member so as to be in close contact with the outer periphery of the connecting tube fitted on the inner core of the inner member on the side opposite to the flange portion side of the male screw portion. Features water fittings.

It is a joint for waterworks that connects a connecting pipe made of synthetic resin and the same connection part of a water supply device provided with a connection part having an external thread part on the outer periphery,
An inner member provided with an in-core inserted into an inner periphery of an end of the connecting pipe, and a flange provided at an end of the in-core and abutted against a water channel opening end of the connecting portion;
The in-core is formed in a substantially cylindrical shape that can be fitted to the inner member inserted into the end of the connecting pipe, and an outer member provided with a female screw portion that is screwed into the male screw portion of the connecting portion,
A tapered male screw portion that can be screwed into the inner periphery of the end portion of the connecting pipe is formed on the outer periphery of the in-core, and an annular pressing member that can be externally fitted to the male screw portion on the inner periphery of the outer member. Part is formed,
By screwing the female thread portion of the outer member into the male thread portion of the connecting portion, the flange portion of the inner member is brought into contact with the water channel opening end of the connecting portion, and the pressing portion of the outer member and the male thread portion of the inner member are So that the connecting pipe is sandwiched between
Wherein the outer periphery of the flange portion, the water canal fitting characterized in that the knurled for slip is formed.

It is a joint for waterworks that connects a connecting pipe made of synthetic resin and the same connection part of a water supply device provided with a connection part having an external thread part on the outer periphery,
An inner member provided with an in-core inserted into an inner periphery of an end of the connecting pipe, and a flange provided at an end of the in-core and abutted against a water channel opening end of the connecting portion;
The in-core is formed in a substantially cylindrical shape that can be fitted to the inner member inserted into the end of the connecting pipe, and an outer member provided with a female screw portion that is screwed into the male screw portion of the connecting portion,
A tapered male screw portion that can be screwed into the inner periphery of the end portion of the connecting pipe is formed on the outer periphery of the in-core, and an annular pressing member that can be externally fitted to the male screw portion on the inner periphery of the outer member. Part is formed,
By screwing the female thread portion of the outer member into the male thread portion of the connecting portion, the flange portion of the inner member is brought into contact with the water channel opening end of the connecting portion, and the pressing portion of the outer member and the male thread portion of the inner member are So that the connecting pipe is sandwiched between
Wherein the open end side of the flange portion side of the waterway of the inner member, the water canal fitting you characterized in that the holes of polygonal cross section extending in the axial direction of the inner member.

A protective cap is detachably attached to the outer member so as to close the opening on the female screw side, and the protective cap can be fitted in the axial direction with respect to the hole of the inner member. The water fitting according to claim 3 , further comprising a fitting portion and a base portion that is gripped by a hand and rotates the fitting portion around its axis.

A faucet comprising a faucet body installed on a table, a synthetic resin connecting pipe extending from the faucet body to the base, and a joint attached to an end of the connecting pipe. ,
The water tap according to any one of claims 1 to 4 , wherein the joint is the water joint according to any one of claims 1 to 4 .