JP5601451B2 - Drain socket, flush toilet equipped with the same, and drain pipe member - Google Patents

Drain socket, flush toilet equipped with the same, and drain pipe member Download PDF

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JP5601451B2
JP5601451B2 JP2010042506A JP2010042506A JP5601451B2 JP 5601451 B2 JP5601451 B2 JP 5601451B2 JP 2010042506 A JP2010042506 A JP 2010042506A JP 2010042506 A JP2010042506 A JP 2010042506A JP 5601451 B2 JP5601451 B2 JP 5601451B2
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pipe
air
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drainage
pipe member
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JP2011179189A (en
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優 山▲崎▼
中村　　匡宏
浩志 亀井
友昭 守田
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Toto Ltd
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Description

本発明は、排水ソケット、それを備えた水洗大便器、及び、排水管部材に係わり、特に、水洗大便器の便器本体の排水路の出口部と床下に設けられた床下排水管の入口部とを連結する排水ソケット、それを備えた水洗大便器、及び、衛生器具から排出された排水の流路をこの流路の方向とは異なる方向に屈曲させる排水管部材に関する。   The present invention relates to a drainage socket, a flush toilet equipped with the drainage socket member, and a drainage pipe member, and in particular, an outlet part of a drainage channel of a toilet body of the flush toilet and an inlet part of an underfloor drainage pipe provided under the floor. The present invention relates to a drain socket that connects the two, a flush toilet provided with the drain socket, and a drain pipe member that bends a flow path of drainage discharged from a sanitary ware in a direction different from the direction of the flow path.

従来から、水洗大便器の種類の中で、サイホン作用を生じさせない便器として、洗い落し式便器が知られている。
このような従来の洗い落し式便器は、サイホン作用を生じさせて便器を洗浄するサイホン式便器に比べて、水の落差による流水作用で汚物を押し流す方式で構造がシンプルであり、かつ安価であることに加えて、サイホン作用を生じさせないため、便器洗浄に用いられる洗浄水の量が少なくて済むという利点を有する。したがって、従来から便器に要請されている洗浄水の節水のニーズにも合致したものとなっている。 2. Description of the Related Art Conventionally, a flush toilet is known as a toilet that does not cause siphon action among types of flush toilets.
Such conventional wash-out toilets have a simple structure and are inexpensive compared to siphon-type toilets that produce a siphon action and wash the toilet bowl, with a method of flushing filth by running water due to a water drop. In addition, since the siphon action is not generated, there is an advantage that the amount of washing water used for toilet flushing can be reduced. Therefore, it is consistent with the water-saving needs of washing water that have been conventionally required for toilets.

また、従来の洗い落し式便器においては、便器本体の排水路の出口部よりに下流側に配置される排水管が屈曲した管路部分を備えている場合には、この屈曲した管路内が便器本体の排水路から排出された排水で満水になると、屈曲した管路内において上流側の排水を下流側へ引き込もうとする負圧によるサイホン作用が発生し、このような洗い落し式便器の便器本体の排水路の下流側の排水路内で生じたサイホン作用により、洗い落し式便器の便器本体の溜水が下流側に引き込まれて溜水不足や封水切れを招く可能性があるという問題がある。   Further, in the conventional flush toilet, when the drain pipe disposed downstream of the outlet of the toilet main body has a bent pipe portion, the inside of the bent pipe is When the drainage drained from the toilet body drainage channel becomes full, a siphon action occurs due to negative pressure trying to draw the upstream drainage downstream in the bent pipe, and the toilet bowl of such a flush toilet There is a problem that due to the siphon action that occurs in the drainage channel on the downstream side of the drainage channel of the main body, the stored water in the toilet body of the flush toilet may be drawn to the downstream side, leading to lack of stored water or running out of the sealed water .

そこで、上述した洗い落し式便器の便器本体の排水路の下流側の排水管路内で発生するサイホン作用を抑制する対策として、例えば、特許文献１に記載されているように、ほぼＬ字形の排水管継手の上流側の空気と下流側の空気を連通させる通気管を洗い落し式便器の便器本体の排水路の下流側の屈曲した排水管の外部或いはこの屈曲した排水管の管内壁に沿って取り付けることにより、屈曲した排水管の管路内でサイホン作用が発生した際に屈曲した排水管の下流側の空気を通気通気管から屈曲した排水管の管路内の上流側に供給し、排水管路内でサイホン切れを生じさせることにより、負圧によるサイホン作用を抑制させるものも知られている。   Therefore, as a measure for suppressing the siphon action that occurs in the drainage pipe downstream of the drainage body of the toilet bowl described above, for example, as described in Patent Document 1, a substantially L-shaped Wash out the ventilation pipe that connects the upstream air and the downstream air of the drainage pipe joint, and the outside of the bent drainage pipe on the downstream side of the drainage channel of the toilet body of the toilet bowl or along the inner wall of the bent drainage pipe When the siphon action is generated in the bent drainage pipe, the downstream air of the bent drainage pipe is supplied from the ventilation vent pipe to the upstream side of the bent drainage pipe, It is also known to suppress siphon action due to negative pressure by causing siphon breakage in the drain pipe.

特開平８−２５３９５９号公報JP-A-8-253959

しかしながら、上述した特許文献１に記載されている通気管のようなものを洗い落し式便器の便器本体の排水路の下流側の排水管に取り付けた場合には、この通気管の開口部分から通気管内に排水中が入り込んで通気管内が汚物で詰まるため、排水管路内で発生する負圧によるサイホン作用を抑制することができなくなるという問題がある。   However, when the above-described vent pipe described in Patent Document 1 is washed off and attached to the drain pipe on the downstream side of the drain channel of the toilet body of the toilet bowl, the vent pipe is vented from the opening of the vent pipe. There is a problem that siphon action due to negative pressure generated in the drainage pipe cannot be suppressed because the inside of the drainage enters the pipe and the inside of the vent pipe is clogged with dirt.

そこで、本発明は、上述した従来技術の問題点を解決するためになされたものであり、水洗大便器の便器本体の排水路の出口部と床下に設けられた床下排水管の入口部とを連結することができると共に、この水洗大便器の便器本体の排水路の出口部と床下排水管の入口部と間の排水流路内で上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる排水ソケット、及び、それを備えた水洗大便器を提供することを目的としている。
また、本発明は、例えば、水洗大便器や洗面台等の衛生器具の排水路の下流側に配置され、この衛生器具から排出された排水の流路をこの流路の方向とは異なる方向に屈曲させる排水管路内で発生する上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる排水管部材を提供することを目的としている。 Therefore, the present invention has been made to solve the above-described problems of the prior art, and includes an outlet portion of a drainage channel of a toilet body of a flush toilet and an inlet portion of an underfloor drain pipe provided under the floor. In addition to being able to connect, the negative pressure that draws the upstream drainage downstream in the drainage channel between the drainage outlet of the toilet body of the flush toilet and the inlet of the underfloor drainage pipe is effective It is an object of the present invention to provide a drainage socket that can be suppressed and a flush toilet equipped with the drainage socket.
In addition, the present invention is arranged, for example, on the downstream side of a drainage channel of a sanitary instrument such as a flush toilet or a washstand, and the flow path of drainage discharged from the sanitary instrument is different from the direction of the channel. It aims at providing the drain pipe member which can suppress effectively the negative pressure which tries to draw in the drainage of the upper stream generated in the drain pipe which makes it bend in the downstream.

上記の目的を達成するために、本発明は、水洗大便器の便器本体の排水路の出口部と便器本体内の下方領域の床に設けられた床下排水管の入口部とを連結する排水ソケットであって、上記便器本体の排水路の出口部と床下排水管の入口部とを接続する接続管部材を有し、上記接続管部材には、屈曲管路が形成されると共に、この屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に上記屈曲管路の下流側の空気を上記屈曲管路の上流側に流出させる屈曲した通気路が形成され、この通気路の空気流出口の断面積は、上記通気路の流路断面のうちで最小であることを特徴としている。
このように構成された本発明においては、接続管部材の内部に形成された通気路の空気流出口の断面積が通気路の流路断面のうちで最小となっているため、万一排水中の汚物が空気流出口から通気路内に入り込んでしまったとしても、空気流出口よりも流路断面の断面積が大きい通気路内の下流側に汚物が自然に流されるため、汚物を通気路内で詰まりにくくすることができる。したがって、接続管部材の内部に形成された屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲した通気路によって、屈曲管路の下流側の空気を屈曲管路の上流側に流出させて、屈曲管路内の負圧を確実に抑制することができる。 In order to achieve the above object, the present invention provides a drain socket for connecting an outlet portion of a drainage channel of a toilet body of a flush toilet and an inlet portion of an underfloor drain pipe provided on a floor in a lower region in the toilet body. A connecting pipe member for connecting an outlet part of the drainage channel of the toilet body and an inlet part of the underfloor drainage pipe, and a bent pipe line is formed in the connecting pipe member. A bent air passage is formed that causes the air on the downstream side of the bent conduit to flow out to the upstream side of the bent conduit when a negative pressure is generated to draw the upstream drainage downstream in the passage. The cross-sectional area of the air outlet of the air passage is the smallest among the cross sections of the air passage.
In the present invention configured as described above, since the cross-sectional area of the air outlet of the air passage formed inside the connecting pipe member is the smallest of the flow passage cross sections of the air passage, Even if the sewage enters the air passage from the air outlet, the filth naturally flows to the downstream side of the air passage where the cross-sectional area of the flow path is larger than that of the air outlet. It can be hard to clog. Therefore, when a negative pressure is generated in the bent pipe formed inside the connecting pipe member so as to draw the upstream drainage downstream, the bent air passage causes the air downstream of the bent pipe to flow. The negative pressure in the bent pipe can be reliably suppressed by flowing out to the upstream side of the bent pipe.

本発明において、好ましくは、上記接続管部材は、外側ケーシング部材と、この外側ケーシング部材の内部に組み込まれて上記屈曲管路及び上記通気路を形成する屈曲管路部材と、を備え、上記通気路を形成する上記屈曲管路部材の外周面は、上記通気路の上方に位置する空気流出口から下方に位置する空気流入口に向かって張り出した曲がり面を形成する。
このように構成された本発明においては、通気路を形成する屈曲管路部材の外周面が、通気路の上方に位置する空気流出口から下方に位置する空気流入口に向かって張り出した曲がり面を形成しているため、万一排水中の汚物が空気流出口から通気路内に入り込んでしまったとしても、通気路内の汚物が屈曲管路部材の外周面に沿って通気路の空気流入口に導かれ、この空気流入口から接続管部材の下流側に向けて排出されるため、通気路内に汚物が詰まることを防ぐことができる。したがって、接続管部材の屈曲管路部材の屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に、通気路によって、屈曲管路部材の下流外周側の空気を空気流入口から屈曲管路部材の外周面を経て空気流出口から屈曲管路の上流側に流出させて、屈曲管路内の負圧を確実に抑制することができる。 In the present invention, preferably, the connection pipe member includes an outer casing member, and a bent pipe member that is incorporated in the outer casing member to form the bent pipe line and the vent path, and The outer peripheral surface of the bent pipe member forming the path forms a curved surface projecting from the air outlet located above the vent path toward the air inlet located below.
In the present invention configured as described above, the outer peripheral surface of the bent pipe member forming the air passage projects from the air outlet located above the air passage toward the air inlet located below. Therefore, even if filth in the wastewater enters the ventilation path from the air outlet, the filth in the ventilation path flows along the outer peripheral surface of the bent pipe member. Since it is guided to the inlet and discharged from the air inlet toward the downstream side of the connecting pipe member, it is possible to prevent clogging of dirt in the air passage. Therefore, when a negative pressure is generated in the bent pipe line of the bent pipe member of the connecting pipe member so that the upstream drainage is drawn downstream, the air on the downstream outer peripheral side of the bent pipe member is The negative pressure in the bent pipe can be reliably suppressed by flowing from the air inlet through the outer peripheral surface of the bent pipe member to the upstream side of the bent pipe from the air outlet.

本発明において、好ましくは、上記接続管部材の屈曲管路部材は、上記通気路の空気流出口及びこの空気流出口よりも上流側の通気路の流路断面を複数に区画する区画壁を備えている。
このように構成された本発明においては、接続管部材の屈曲管路部材の区画壁によって、通気路及びこの空気流出口の流路断面が複数に区画されており、この区画壁によって区画された複数の通気路とこれらに対応する複数の空気流出口が確保されているため、万一排水中の汚物が、ある空気流出口からこれと対応する通気路内に入り込んでしまったとしても、これ以外の他の空気流出口及びこれと対応する通気路において、汚物が入り込まない、或いは、汚物が入り込む量が少ないので、空気流出口及び通気路を確保することができる。したがって、接続管部材の屈曲管路部材の屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に、通気路によって、屈曲管路部材の下流外周側の空気を空気流入口から屈曲管路部材の外周面を経て空気流出口から屈曲管路の上流側に流出させて、屈曲管路内の負圧を確実に抑制することができる。 In the present invention, preferably, the bent pipe member of the connection pipe member includes an air outlet of the air passage and a partition wall that divides a flow passage section of the air passage upstream of the air outlet into a plurality of sections. ing.
In the present invention configured as described above, the flow passage section of the air passage and the air outlet is divided into a plurality of sections by the partition wall of the bent pipe member of the connection pipe member, and is partitioned by the partition wall. Since there are multiple air passages and multiple air outlets corresponding to them, even if filth in the wastewater enters the corresponding air passage from an air outlet, In other air outlets and the corresponding air passages, dirt does not enter or the amount of dirt entering is small, so that the air outlet and the air passage can be secured. Therefore, when a negative pressure is generated in the bent pipe line of the bent pipe member of the connecting pipe member so that the upstream drainage is drawn downstream, the air on the downstream outer peripheral side of the bent pipe member is The negative pressure in the bent pipe can be reliably suppressed by flowing from the air inlet through the outer peripheral surface of the bent pipe member to the upstream side of the bent pipe from the air outlet.

本発明において、好ましくは、上記接続管部材の外側ケーシング部材は、上記通気路の断面の大きさを上記空気流出口及び上記空気流入口の断面の大きさよりも拡張させる通気路拡張部を備えている。
このように構成された本発明においては、接続管部材の外側ケーシング部材が、通気路の断面の大きさを空気流出口及び空気流入口の断面の大きさよりも拡張させる通気路拡張部を備えているため、万一排水中の汚物が空気流出口から通気路内に入り込んでしまったとしても、通気路拡張部によって通気路の断面の大きさが空気流出口及び空気流入口の断面の大きさよりも拡張されて通気路内の容積が比較的広くなっているため、通気路内に汚物を蓄積しにくくすることができる。したがって、接続管部材の屈曲管路部材の屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に、通気路によって、屈曲管路部材の下流外周側の空気を空気流入口から屈曲管路部材の外周面を経て空気流出口から屈曲管路の上流側に流出させて、屈曲管路内の負圧を確実に抑制することができる。 In the present invention, it is preferable that the outer casing member of the connection pipe member includes an air passage expansion portion that expands a cross-sectional size of the air passage more than a cross-sectional size of the air outflow port and the air inflow port. Yes.
In the present invention configured as described above, the outer casing member of the connecting pipe member includes an air passage expansion portion that expands the cross-sectional size of the air passage more than the cross-sectional size of the air outlet and the air inlet. Therefore, even if filth in the drainage enters the air passage from the air outlet, the size of the cross section of the air passage is larger than the size of the cross section of the air outlet and the air inlet by the air passage extension. Since the volume in the air passage is relatively widened, it is possible to make it difficult to accumulate filth in the air passage. Therefore, when a negative pressure is generated in the bent pipe line of the bent pipe member of the connecting pipe member so that the upstream drainage is drawn downstream, the air on the downstream outer peripheral side of the bent pipe member is The negative pressure in the bent pipe can be reliably suppressed by flowing from the air inlet through the outer peripheral surface of the bent pipe member to the upstream side of the bent pipe from the air outlet.

また、本発明は、上記排水ソケットを備えた水洗大便器である。
このように構成された本発明においては、排水ソケットの接続管部材の通気路内に汚物を詰まりにくくすることができるため、接続管部材の排水管路内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、通気路によって、屈曲管路の下流側の空気を屈曲管路の上流側に流出させて、屈曲管路内の負圧を確実に抑制することができる。したがって、このような負圧によって水洗大便器の便器本体の溜水が下流側に引き込まれて溜水不足や封水切れになることを未然に防ぐことができ、水洗大便器の洗浄性能と節水効果を十分に確保することができる。 Moreover, this invention is the flush toilet provided with the said drain socket.
In the present invention configured as described above, it is possible to prevent clogging of dirt in the ventilation path of the connecting pipe member of the drain socket, and therefore, the upstream drainage is also drawn downstream in the drain pipe path of the connecting pipe member. When a negative pressure is generated, the air on the downstream side of the bent conduit is caused to flow out to the upstream side of the bent conduit by the ventilation passage, so that the negative pressure in the bent conduit can be reliably suppressed. Therefore, it is possible to prevent the stored water in the toilet body of the flush toilet from being drawn downstream due to such negative pressure, and to prevent the lack of accumulated water and running out of sealed water. It can be secured sufficiently.

さらに、本発明は、衛生器具から排出された排水の流路をこの流路の方向とは異なる方向に屈曲させる排水管部材であって、衛生器具の排水路の出口部から流出した排水の流れをこの流れの方向とは異なる方向に屈曲させる屈曲管路を形成する屈曲管路部材を有し、上記屈曲管路部材は、この屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に上記屈曲管路の下流側の空気を上記屈曲管路の上流側に流出させる屈曲した通気路を形成し、この通気路の空気流出口の断面積は、上記通気路の流路断面のうちで最小であることを特徴としている。
このように構成された本発明においては、屈曲管路部材によって形成される通気路の空気流出口の断面積が通気路の流路断面のうちで最小となっているため、万一排水中の汚物が空気流出口から通気路内に入り込んでしまったとしても、空気流出口よりも流路断面の断面積が大きい通気路内に汚物が流されるため、汚物を通気路内で詰まりにくくすることができる。したがって、屈曲管路部材の屈曲管路内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲した通気路によって、屈曲管路の下流側の空気を屈曲管路の上流側に流出させて、屈曲管路内の負圧を確実に抑制することができる。 Furthermore, the present invention provides a drain pipe member that bends a flow path of drainage discharged from a sanitary instrument in a direction different from the direction of the flow path, and the flow of drainage flowing out from the outlet of the drainage path of the sanitary instrument A bent pipe member that forms a bent pipe line that is bent in a direction different from the flow direction, and the bent pipe member attempts to draw the upstream drainage into the downstream side in the bent pipe line. When a negative pressure is generated, a bent air passage is formed to flow the air downstream of the bent conduit to the upstream side of the bent conduit, and the cross-sectional area of the air outlet of the air passage is the air passage It is the smallest among the cross-sections of the flow paths.
In the present invention configured as described above, since the cross-sectional area of the air outlet of the air passage formed by the bent pipe member is the smallest in the cross-section of the air passage, Even if filth enters the air passage from the air outlet, the filth will flow into the air passage having a larger cross-sectional area than the air outlet, so that the filth is not easily blocked in the air passage. Can do. Therefore, when a negative pressure is generated in the bent pipe member so as to draw the upstream drainage downstream, the bent air passage causes the air downstream of the bent pipe to flow into the bent pipe. The negative pressure in the bent pipe can be reliably suppressed by flowing out upstream.

本発明の排水ソケットによれば、水洗大便器の便器本体の排水路の出口部と床下に設けられた床下排水管の入口部とを連結することができると共に、この水洗大便器の便器本体の排水路の出口部と床下排水管の入口部と間の排水流路内で上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる。
また、本発明の排水ソケットを備えた水洗大便器によれば、排水ソケットの管路内で上流側の排水を下流側に引き込もうとする負圧の発生を効果的に抑制し、この負圧によって水洗大便器の便器本体の溜水が下流側に引き込まれて溜水不足や封水切れになることを未然に防ぐことができるため、水洗大便器の洗浄性能と節水効果を十分に確保することができる。
さらに、本発明の排水管部材によれば、例えば、水洗大便器や洗面台等の衛生器具の排水路の下流側に配置され、この衛生器具から排出された排水の流路をこの流路の方向とは異なる方向に屈曲させる排水管路内で発生する上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる。 According to the drain socket of the present invention, it is possible to connect the outlet portion of the drainage channel of the toilet body of the flush toilet and the inlet portion of the underfloor drain pipe provided under the floor, and the toilet body of the flush toilet It is possible to effectively suppress the negative pressure that tends to draw the upstream drainage downstream in the drainage channel between the outlet of the drainage channel and the inlet of the underfloor drainage pipe.
Further, according to the flush toilet equipped with the drain socket of the present invention, it effectively suppresses the generation of negative pressure to try to draw the upstream drainage downstream in the pipe of the drain socket. Since it is possible to prevent the stored water in the toilet body of the flush toilet from being drawn downstream and running out of accumulated water or running out of sealed water, the washing performance and water saving effect of the flush toilet can be sufficiently secured. .
Furthermore, according to the drainage pipe member of the present invention, for example, the drainage channel disposed on the downstream side of the drainage channel of a sanitary instrument such as a flush toilet or a wash basin, and the drainage channel discharged from the sanitary instrument is connected to this channel It is possible to effectively suppress the negative pressure that tends to draw the upstream drainage generated in the drain pipe that is bent in a direction different from the direction, to the downstream side.

本発明の第１実施形態による排水ソケットを備えた洗い落し式便器の概略断面図である。It is a schematic sectional drawing of the wash-off-type toilet provided with the drain socket by 1st Embodiment of this invention. 図１に示す本発明の第１実施形態による排水ソケットの拡大概略断面図である。It is an expansion schematic sectional drawing of the drain socket by 1st Embodiment of this invention shown in FIG. 本発明の第１実施形態による排水ソケットの分解斜視図である。1 is an exploded perspective view of a drain socket according to a first embodiment of the present invention. 本発明の第１実施形態による排水ソケットの床下側接続管部材の側面断面図である。It is side surface sectional drawing of the floor lower side connection pipe member of the drain socket by 1st Embodiment of this invention. 図４のＶ−Ｖ線に沿った断面図である。It is sectional drawing along the VV line of FIG. 図４のＶＩ−ＶＩ線に沿った断面図である。It is sectional drawing along the VI-VI line of FIG. 図４のＶＩＩ−ＶＩＩ線に沿った断面図である。It is sectional drawing along the VII-VII line of FIG. 図４のＶＩＩＩ−ＶＩＩＩ線に沿った断面図である。It is sectional drawing along the VIII-VIII line of FIG. 図４のＩＸ−ＩＸ線に沿った断面図である。It is sectional drawing along the IX-IX line of FIG. 本発明の第１実施形態による排水ソケットの床下側接続管部材の屈曲管路／通気路形成部材を示す斜視図である。It is a perspective view which shows the bending pipe line / ventilation path formation member of the floor lower side connection pipe member of the drain socket by 1st Embodiment of this invention. 本発明の第１実施形態による排水ソケットの床下側接続管部材の内部において排水及び通気が行われているときの状態を説明する説明図である。It is explanatory drawing explaining the state when drainage and ventilation | gas_flowing are performed in the inside of the floor lower side connection pipe member of the drain socket by 1st Embodiment of this invention. 本発明の第２実施形態による排水ソケットの側面断面図である。It is side surface sectional drawing of the drain socket by 2nd Embodiment of this invention. 本発明の一実施形態による排水管部材の側面断面図である。It is side surface sectional drawing of the drain pipe member by one Embodiment of this invention.

以下、添付図面により、本発明の第１実施形態による排水トラップ、及び、それを備えた洗い落し式便器（水洗大便器）を説明する。
まず、図１により、本発明の第１実施形態による排水ソケットが適用された洗い落し式便器を説明する。 Hereinafter, a drain trap according to a first embodiment of the present invention and a wash-out toilet (flush toilet) equipped with the same will be described with reference to the accompanying drawings.
First, referring to FIG. 1, a wash-out toilet with a drain socket according to a first embodiment of the present invention will be described.

図１は、本発明の第１実施形態による排水ソケットを備えた洗い落し式便器の概略断面図である。
図１に示すように、符号１は洗い落し式便器を示し、この洗い落し式便器１は、便器本体２を備え、この便器本体２の上部の前方側には、ボウル部４が形成され、後方側の上部には導水路６が、導水路６の下方にはボウル部４と連通する排水トラップ管路８が、それぞれ形成されている。 FIG. 1 is a schematic sectional view of a flush toilet equipped with a drain socket according to a first embodiment of the present invention.
As shown in FIG. 1, reference numeral 1 denotes a flush toilet, and the flush toilet 1 includes a toilet body 2, and a bowl portion 4 is formed on the front side of the upper portion of the toilet body 2. A water conduit 6 is formed in the upper part on the rear side, and a drain trap pipe 8 communicating with the bowl portion 4 is formed below the water conduit 6.

便器本体２のボウル部４の上縁部内側にはオーバーハング形状のリム１０が形成され、さらに、このリム１０の一部には、導水路６から供給される洗浄水を吐水する第１吐水口１２が形成され、第１吐水口１２から吐水された洗浄水は、旋回しながら下降してボウル部４を洗浄するようになっている。   An overhang-shaped rim 10 is formed on the inner side of the upper edge of the bowl portion 4 of the toilet body 2, and a first discharge that discharges wash water supplied from the water conduit 6 is formed in a part of the rim 10. The water port 12 is formed, and the wash water discharged from the first water discharge port 12 descends while swirling to wash the bowl portion 4.

排水トラップ管路８は、洗い落し式便器１の便器本体２の排水路であり、この排水トラップ管路８の近傍で且つボウル部４の下方には、一点鎖線で溜水面Ｗ0が示された溜水部１４が形成されている。この溜水部１４の下方には、上述した排水トラップ管路８の入口８ａが開口し、この入口８ａから上昇路８ｂが後方に延びている。この上昇路８ｂには下降路８ｃが連続し、下降路８ｃの下端に位置する排水トラップ管路８の出口８ｄは、詳細は後述する排水ソケット１６が接続されている。また、この排水ソケット１６の下流側端部は、便器本体２が配置されている床Ｆの領域の下方に配置されて上下方向に延びる排水管１８（以下「床下排水管１８」）の上端で開口している入口部１８ａに接続されている。 The drain trap pipe 8 is a drain path of the toilet body 2 of the wash-out toilet 1, and a reservoir surface W 0 is indicated by a one-dot chain line near the drain trap pipe 8 and below the bowl portion 4. A reservoir 14 is formed. Below the water reservoir 14, the inlet 8 a of the drain trap pipe 8 described above opens, and the ascending path 8 b extends rearward from the inlet 8 a. A descending path 8c continues to the ascending path 8b, and an outlet 8d of the drain trap pipe 8 positioned at the lower end of the descending path 8c is connected to a drain socket 16 described later in detail. Further, the downstream end of the drain socket 16 is the upper end of a drain pipe 18 (hereinafter referred to as “under-floor drain pipe 18”) that is disposed below the area of the floor F on which the toilet body 2 is disposed and extends vertically. It is connected to the open inlet 18a.

また、ボウル部４の中心下部の溜水面Ｗ0の上方位置には、導水路６から供給される洗浄水を吐水する第２吐水口２０が形成され、この第２吐水口２０から吐水される洗浄水が溜水部１４の溜水を上下方向に旋回させる旋回流を生じさせるようになっている。 Further, a second water discharge port 20 for discharging the cleaning water supplied from the water conduit 6 is formed at a position above the water storage surface W 0 at the center lower portion of the bowl portion 4, and water is discharged from the second water discharge port 20. The washing water generates a swirling flow that swirls the water stored in the water storage section 14 in the vertical direction.

さらに、便器本体２の導水路６の上方には、便器本体２に供給する洗浄水を貯水する洗浄水タンク装置２２が設けられている。この洗浄水タンク装置２２は、洗浄水タンク２４を備え、この洗浄水タンク２４の底部には、便器本体２の導水路６と連通して洗浄水タンク２０内の洗浄水が排水される排水口２４aが形成されている。   Further, a flush water tank device 22 for storing flush water supplied to the toilet body 2 is provided above the water conduit 6 of the toilet body 2. The washing water tank device 22 includes a washing water tank 24, and a drain outlet through which the washing water in the washing water tank 20 is drained at the bottom of the washing water tank 24 in communication with the water conduit 6 of the toilet body 2. 24a is formed.

つぎに、図２及び図３により、本実施形態の排水ソケット１６の構成について概略的に説明する。
図２は、図１に示す本発明の第１実施形態による排水ソケットの拡大概略断面図であり、図３は、本発明の第１実施形態による排水ソケットの分解斜視図である。
図２及び図３に示すように、排水ソケット１６は、上流側から下流側の順に、便器本体側接続管部材２６、及び、床下側接続管部材２８を備えている。 Next, the configuration of the drain socket 16 of this embodiment will be schematically described with reference to FIGS. 2 and 3.
FIG. 2 is an enlarged schematic cross-sectional view of the drain socket according to the first embodiment of the present invention shown in FIG. 1, and FIG. 3 is an exploded perspective view of the drain socket according to the first embodiment of the present invention.
As shown in FIGS. 2 and 3, the drain socket 16 includes a toilet body side connecting pipe member 26 and an underfloor side connecting pipe member 28 in order from the upstream side to the downstream side.

また、排水ソケット１６の便器本体側接続管部材２６は、上流側から下流側の順に、便器本体側接続管本体３０、及び、管路延長用連結管３２を備えている。
さらに、排水ソケット１６の床下側接続管部材２８は、外側ケーシング部材３４、屈曲管路部材３６、及び、ベース部材３８を備えている。 The toilet main body side connecting pipe member 26 of the drain socket 16 includes a toilet main body side connecting pipe main body 30 and a pipe extension connecting pipe 32 in order from the upstream side to the downstream side.
Further, the lower floor side connecting pipe member 28 of the drain socket 16 includes an outer casing member 34, a bent pipe member 36, and a base member 38.

排水ソケット１６の便器本体側接続管部材２６の便器本体側接続管本体３０の上方位置には、上方に向けて開口する入口部３０ａが形成され、この便器本体側接続管本体３０の入口部３０ａは、便器本体２の排水路の出口部である排水トラップ管路８の出口８ｄに接続されている。   An inlet portion 30 a that opens upward is formed at an upper position of the toilet main body side connecting pipe body 30 of the toilet main body side connecting pipe member 26 of the drain socket 16, and an inlet portion 30 a of the toilet main body side connecting pipe main body 30 is formed. Is connected to the outlet 8d of the drain trap pipe 8 which is the outlet of the drain of the toilet body 2.

また、便器本体側接続管本体３０には、この入口部３０ａから便器本体側接続管本体３０の内部を下方に向かって所定距離延び、便器本体２の前方側（図２の右方向）に向けてほぼＬ字形形状で屈曲する屈曲管路３０ｂを形成した後、所定長さ前方に突出する突出管路３０ｃが形成されている。   Further, the toilet main body side connecting pipe main body 30 extends a predetermined distance downward from the entrance portion 30a toward the front side of the toilet main body 2 (right direction in FIG. 2). After forming the bent pipe line 30b bent in a substantially L-shape, a protruding pipe line 30c protruding forward by a predetermined length is formed.

さらに、便器本体側接続管本体３０の突出管路３０ｃは、便器本体側接続管本体３０の下方位置に位置し、この基端３０ｄが屈曲管路３０ｂの出口を形成している。また、突出管路３０ｃは、この基端３０ｄから前方側に所定距離延びた先端３０ｅにかけてほぼ水平方向に延びた管路を形成している。この突出管路３０ｃ内の領域は、管路延長用連結管３２の入口部３２ａが挿入されて連結され、便器本体側接続管本体３０と管路延長用連結管３２とが接続される接続部となっている。   Further, the protruding pipe line 30c of the toilet main body side connecting pipe main body 30 is located at a lower position of the toilet main body side connecting pipe main body 30, and the base end 30d forms the outlet of the bent pipe line 30b. Further, the protruding pipe line 30c forms a pipe line extending in a substantially horizontal direction from the base end 30d to a tip end 30e extending a predetermined distance forward. The region within the projecting pipe line 30c is connected by inserting the inlet part 32a of the pipe extension connecting pipe 32 and connecting the toilet main body side connecting pipe body 30 and the pipe extension connecting pipe 32 to each other. It has become.

排水ソケット１６の便器本体側接続管部材２６の管路延長用連結管３２は、便器本体側接続管部材２６の便器本体側接続管本体３０と床下側接続管部材２８の外側ケーシング部材３４との相対距離に基づいて設計され、直線状に所定長さ延びた管路３２ｂを形成する管部材である。   The pipe extension connecting pipe 32 of the toilet main body side connecting pipe member 26 of the drain socket 16 is formed between the toilet main body side connecting pipe body 30 of the toilet main body side connecting pipe member 26 and the outer casing member 34 of the underfloor side connecting pipe member 28. It is a pipe member that is designed based on the relative distance and forms a pipe line 32b that extends linearly for a predetermined length.

管路延長用連結管３２の入口部３２ａは、便器本体側接続管本体３０の突出管路３０ｃ内に挿入されて便器本体側接続管本体３０と管路延長用連結管３２とが連結されると共に、管路延長用連結管３２の出口部３２ｃは、床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａに挿入されて管路延長用連結管３２と床下側接続管部材２８の外側ケーシング部材３４とが連結されることにより、便器本体側接続管部材２６と床下側接続管部材２８が接続されるようになっている。   The inlet 32a of the pipe extension connecting pipe 32 is inserted into the protruding pipe 30c of the toilet main body side connecting pipe main body 30, and the toilet main body side connecting pipe main body 30 and the pipe extension connecting pipe 32 are connected. At the same time, the outlet portion 32 c of the pipe extension connecting pipe 32 is inserted into the inlet portion 34 a of the outer casing member 34 of the underfloor side connecting pipe member 28, so that the outside of the pipe extension connecting pipe 32 and the underfloor side connecting pipe member 28. By connecting the casing member 34, the toilet main body side connecting pipe member 26 and the underfloor side connecting pipe member 28 are connected.

便器本体２の排水トラップ管路８の出口８ｄから下方に向けて排出された排水は、便器本体側接続管本体３０の入口部３０ａから屈曲管路３０ｂ内へ流入した後、屈曲管路３０ｃに沿って便器本体側接続管本体３０の前方側へと差し向けられ、便器本体側接続管本体３０の屈曲管路３０ｂの出口３０ｄから流出し、管路延長用連結管３２の入口部３２ａから管路延長用連結管３２の管路３２ｂ内に排水されるようになっている。そして、管路延長用連結管３２の管路３２ｂ内の排水は、便器本体側接続管部材２６の管路延長用連結管３２の出口部３２ｂ、並びに、床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａを経て、床下側接続管部材２８の外側ケーシング部材３４の内部の排水管路４０の上流側管路４０ａ内に流入するようになっている。   The drainage discharged downward from the outlet 8d of the drain trap pipe 8 of the toilet body 2 flows into the bent pipe 30b from the inlet 30a of the toilet main body side connecting pipe main body 30, and then enters the bent pipe 30c. Along the front side of the toilet main body side connecting pipe body 30, out of the outlet 30 d of the bent pipe line 30 b of the toilet main body side connecting pipe body 30, and from the inlet portion 32 a of the pipe extension connecting pipe 32. Water is drained into the pipe 32b of the path extension connecting pipe 32. The drainage in the pipe 32b of the pipe extension connecting pipe 32 is discharged from the outlet 32b of the pipe extension connecting pipe 32 of the toilet body side connecting pipe member 26 and the outer casing member of the underfloor side connecting pipe member 28. Through the inlet 34 a of the pipe 34, it flows into the upstream pipe 40 a of the drain pipe 40 inside the outer casing member 34 of the underfloor side connecting pipe member 28.

なお、本実施形態の排水ソケット１６においては、一例として、床下排水管１８の入口部１８ａの位置が便器本体側接続管本体３０の位置に対して比較的距離が離れた場合については、便器本体側接続管部材２６が便器本体側接続管本体３０と、この便器本体側接続管本体３０に連結された管路延長用連結管３２を備えることにより、便器本体側接続管部材２６と床下側接続管部材２８とを接続した形態について説明するが、このような形態に限定されない。例えば、床下排水管１８の入口部１８ａの位置が便器本体側接続管本体３０の位置に対して比較的隣接している場合には、便器本体側接続管部材２６の便器本体側接続管本体３０と床下側接続管部材２８の外側ケーシング部材３４との相対距離も比較的短くなるため、管路延長用連結管３２の長さをその分短くしたり、或いは、管路延長用連結管３２自体を省略して、便器本体側接続管本体３０の突出管路３０ｃと床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａとを直接的に連結することにより、便器本体側接続管部材２６と床下側接続管部材２８とを接続した形態にしてもよい。   In the drain socket 16 of the present embodiment, as an example, when the position of the inlet 18a of the underfloor drain pipe 18 is relatively far from the position of the toilet main body side connection pipe body 30, the toilet body The side connecting pipe member 26 includes a toilet main body side connecting pipe main body 30 and a pipe extension connecting pipe 32 connected to the toilet main body side connecting pipe main body 30 so that the toilet main body side connecting pipe member 26 and the underfloor side connection are provided. Although the form which connected the pipe member 28 is demonstrated, it is not limited to such a form. For example, when the position of the inlet 18a of the underfloor drain pipe 18 is relatively adjacent to the position of the toilet main body side connection pipe main body 30, the toilet main body side connection pipe main body 30 of the toilet main body side connection pipe member 26 is used. Since the relative distance between the lower casing connecting pipe member 28 and the outer casing member 34 is also relatively short, the length of the pipe extension connecting pipe 32 is shortened accordingly, or the pipe extension connecting pipe 32 itself. And the toilet pipe main body side connecting pipe member 26 is directly connected to the protruding pipe line 30c of the toilet main body side connecting pipe body 30 and the inlet 34a of the outer casing member 34 of the underfloor side connecting pipe member 28. And the underfloor side connecting pipe member 28 may be connected.

床下側接続管部材２８の外側ケーシング部材３４は、床下側接続管部材２８の本体を形成し、この外側ケーシング部材３４の内側には、詳細は後述する屈曲管路部材３６が組み込まれ、この外側ケーシング部材３４の内部には、上流側から上流側管路４０ａ、屈曲管路４０ｂ、下流側管路４０ｃによって構成される排水管路４０が形成されると共に、屈曲管路４０ｂ及び下流側管路４０ｃの外側には、詳細は後述する通気路４２が形成されている。
なお、詳細は後述するが、床下側接続管部材２８の屈曲管路部材３６の通気路４２は、床下側接続管部材２８の排水管路４０内が満水となった際に排水管路４０の上流側の排水を下流側に引き込もうとする負圧を抑制する負圧抑制手段として機能するようになっている。 The outer casing member 34 of the underfloor side connecting pipe member 28 forms a main body of the underfloor side connecting pipe member 28, and a bent pipe member 36, which will be described in detail later, is incorporated inside the outer casing member 34. In the casing member 34, a drainage pipe 40 constituted by an upstream pipe 40 a, a bent pipe 40 b, and a downstream pipe 40 c is formed from the upstream side, and the bent pipe 40 b and the downstream pipe are formed. An air passage 42, which will be described in detail later, is formed on the outside of 40c.
Although the details will be described later, the air passage 42 of the bent pipe member 36 of the underfloor side connecting pipe member 28 is connected to the drain pipe line 40 when the inside of the drain pipe 40 of the underfloor side connecting pipe member 28 is full. It functions as negative pressure suppression means for suppressing negative pressure that attempts to draw upstream wastewater downstream.

床下側接続管部材２８のベース部材３８は、屈曲管路部材３６が組み込まれた状態の外側ケーシング部材３４の底部に形成された凹部３４ｂに嵌め込まれている。
また、ベース部材３８は、この中央部から下方に所定長さ延びた管路３８ａを形成する管部３８ｂを備え、外側ケーシング部材３４及び屈曲管路部材３６にベース部材３８を組み込んだ状態では、屈曲管路部材３６の下流側管路４０ｃの下流側端部に相当する屈曲管路部材３６の下端部３６ａがベース部材３８の管路３８ａ内に位置している。 The base member 38 of the underfloor side connecting pipe member 28 is fitted in a recess 34b formed at the bottom of the outer casing member 34 in a state where the bent pipe member 36 is incorporated.
In addition, the base member 38 includes a pipe part 38b that forms a pipe line 38a extending downward from the center part by a predetermined length, and in a state where the base member 38 is incorporated in the outer casing member 34 and the bent pipe line member 36, A lower end portion 36 a of the bent pipe member 36 corresponding to the downstream end portion of the downstream pipe line 40 c of the bent pipe member 36 is located in the pipe line 38 a of the base member 38.

さらに、床下側接続管部材２８のベース部材３８の管部３８ｂの外径は、床下排水管１８の管路１８ｂの内径にほぼ等しいか、管路１８ｂの内径よりもわずかに小さく、床下側接続管部材２８を床下排水管１８に接続する際には、ベース部材３８の管部３８ｂを床下排水管１８の入口部１８ａから挿入した後、ビス等の締結部材３８ｃによってベース部材３８が床Ｆに固定されるようになっている。そして、床Ｆに固定されたベース部材３８にこの上方から外側ケーシング部材３４及び屈曲管路部材３６が組み込まれることによって、床下側接続管部材２８と床下排水管１８との接続が完了する。   Further, the outer diameter of the pipe portion 38b of the base member 38 of the underfloor side connecting pipe member 28 is substantially equal to the inner diameter of the pipe line 18b of the underfloor drain pipe 18 or slightly smaller than the inner diameter of the pipe line 18b. When connecting the pipe member 28 to the underfloor drain pipe 18, after inserting the pipe portion 38 b of the base member 38 from the inlet portion 18 a of the underfloor drain pipe 18, the base member 38 is connected to the floor F by a fastening member 38 c such as a screw. It is supposed to be fixed. Then, the outer casing member 34 and the bent pipe member 36 are incorporated into the base member 38 fixed to the floor F from above, whereby the connection between the underfloor side connecting pipe member 28 and the underfloor drain pipe 18 is completed.

つぎに、図４〜図１０により、上述した本実施形態の排水ソケット１６の床下側接続管部材２８において、外側ケーシング部材３４に屈曲管路部材３６を組み込んだ状態の床下側接続管部材２８の内部について詳細に説明する。
図４は本発明の第１実施形態による排水ソケットの床下側接続管部材の側面断面図であり、図５は図４のＶ−Ｖ線に沿った断面図である。つぎに、図６は図４のＶＩ−ＶＩ線に沿った断面図であり、図７は図４のＶＩＩ−ＶＩＩ線に沿った断面図である。また、図８は図４のＶＩＩＩ−ＶＩＩＩ線に沿った断面図であり、図９は図４のＩＸ−ＩＸ線に沿った断面図である。さらに、図１０は、本発明の第１実施形態による排水ソケットの床下側接続管部材の屈曲管路部材を示す斜視図である。 Next, according to FIGS. 4 to 10, in the underfloor side connecting pipe member 28 of the drain socket 16 of the present embodiment described above, the underfloor side connecting pipe member 28 in a state where the bent pipe member 36 is incorporated in the outer casing member 34. The interior will be described in detail.
4 is a side cross-sectional view of the underfloor side connecting pipe member of the drain socket according to the first embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along the line VV of FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4, and FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 4, and FIG. 9 is a sectional view taken along line IX-IX in FIG. Furthermore, FIG. 10 is a perspective view showing a bent pipe member of the lower floor connecting pipe member of the drain socket according to the first embodiment of the present invention.

まず、図４に示すように、床下側接続管部材２８の排水管路４０の上流側管路４０ａは、外側ケーシング部材３４の入口部３４ａからこの内部前方（図４の右方向）に向かって延びるように形成されている。   First, as shown in FIG. 4, the upstream side pipe 40 a of the drainage pipe 40 of the underfloor side connecting pipe member 28 is directed from the inlet 34 a of the outer casing member 34 toward the inside front (right direction in FIG. 4). It is formed to extend.

また、外側ケーシング部材３４の上流側管路４０ａは、便器本体側接続部材２６の管路延長用連結管３２の出口部３２ｃが外側ケーシング部材３４の入口部３４ａから上流側管路４０ａ内に沿って前方に所定距離Ｌ１の位置まで挿入される挿入領域Ｒ１と、この挿入領域Ｒ１の下流側に形成されて管路延長用連結管３２の出口部３２ｃが挿入されていない非挿入領域Ｒ２を備えている。   Further, the upstream side pipe line 40a of the outer casing member 34 has an outlet part 32c of the pipe extension connecting pipe 32 of the toilet body side connecting member 26 extending from the inlet part 34a of the outer casing member 34 into the upstream side pipe line 40a. And a non-insertion region R2 that is formed downstream of the insertion region R1 and into which the outlet portion 32c of the pipe extension connecting pipe 32 is not inserted. ing.

すなわち、外側ケーシング部材３４の上流側管路４０ａの挿入領域Ｒ１においては、便器本体側接続部材２６の管路延長用連結管３２の出口部３２ｃが床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａに挿入されて連結接続されているため、外側ケーシング部材３４の上流側管路４０ａの挿入領域Ｒ１に挿入されている管路延長用連結管３２の出口部３２ｃを含む管路延長用連結管３２の管路３２ｂの部分が、外側ケーシング部材３４の上流側管路４０ａの一部を形成している。   That is, in the insertion region R1 of the upstream side pipe line 40a of the outer casing member 34, the outlet portion 32c of the pipe extension connecting pipe 32 of the toilet main body side connection member 26 is connected to the outer casing member 34 of the underfloor side connection pipe member 28. Since it is inserted and connected to the inlet 34a, the pipe extension includes the outlet 32c of the pipe extension connecting pipe 32 inserted in the insertion region R1 of the upstream pipe 40a of the outer casing member 34. A portion of the pipe 32 b of the connecting pipe 32 forms a part of the upstream pipe 40 a of the outer casing member 34.

さらに、図１０に示すように、床下側接続管部材２８の屈曲管路部材３６は、屈曲管路／通気路形成部３６ｂ、通気路区画壁部３６ｃ、円環状接続部３６ｄ、下流側管路形成部３６ｅを備えている。   Further, as shown in FIG. 10, the bent pipe member 36 of the underfloor side connecting pipe member 28 includes a bent pipe / ventilation path forming part 36 b, an airway partition wall part 36 c, an annular connection part 36 d, and a downstream pipe line. A forming portion 36e is provided.

図４及び図１０に示すように、屈曲管路部材３６の屈曲管路／通気路形成部３６ｂは、この内側に床下側接続管部材２８の屈曲管路４０ｂを形成すると共に、屈曲管路／通気路形成部３６ｂの外側且つ外側ケーシング部材３４の内側に通気路４２を形成している。この屈曲管路４０ｂは、外側ケーシング部材３４の上流側管路４０ａの非挿入領域Ｒ２よりも下流側に位置し、便器本体側接続管部材２６の管路延長用連結管３２の出口部３２ｃから外側ケーシング部材３４の上流側管路４０ａ内に排出された前方への排水の流れを床下排水管１８の管路１８ｂ内に向けて下方への排水の流れとして異なる方向に流路を屈曲させるようになっている。   As shown in FIGS. 4 and 10, the bent pipe / ventilation path forming portion 36b of the bent pipe member 36 forms a bent pipe 40b of the underfloor side connecting pipe member 28 on the inner side thereof, and the bent pipe / An air passage 42 is formed outside the air passage forming portion 36 b and inside the outer casing member 34. The bent pipe line 40b is located downstream of the non-insertion region R2 of the upstream pipe line 40a of the outer casing member 34, and from the outlet part 32c of the pipe extension connecting pipe 32 of the toilet main body side connecting pipe member 26. The flow path is bent in different directions as the flow of the forward drainage discharged into the upstream pipe line 40a of the outer casing member 34 into the pipe line 18b of the underfloor drain pipe 18 as a downward drainage flow. It has become.

屈曲管路部材３６の通気路区画壁部３６ｃは、屈曲管路／通気路形成部３６ｂの外面に沿って前方側に突出して上下方向に延び、通気路４２の流路断面を複数に区画するものであり、通気路４２については、床下側接続管部材２８の前方（図４及び図７の右方向）から見て通気路区画壁部３６ｃによって左右に区画された２つの通気路（以下「左側通気路４２ａ」及び「右側通気路４２ｂ」）が形成されている。
なお、本実施形態では、一例として、通気路４２について通気路区画壁部３６ｃによって２つの通気路（左側通気路４２ａ及び右側通気路４２ｂ）が設けられている形態についえ説明するが、通気路区画壁部３６ｃを複数設けて３つ以上の通気路を設けた形態でもよい。 The air passage partition wall portion 36c of the bent pipe member 36 protrudes forward along the outer surface of the bent pipe / air passage forming portion 36b and extends in the vertical direction, and partitions the flow passage section of the air passage 42 into a plurality of sections. The air passage 42 is divided into two air passages (hereinafter referred to as “the air passage 42” divided on the left and right by the air passage partition wall portion 36c when viewed from the front of the underfloor side connecting pipe member 28 (right direction in FIGS. 4 and 7). Left-side ventilation path 42a "and" right-side ventilation path 42b ") are formed.
In this embodiment, as an example, a description will be given of a mode in which two ventilation paths (the left ventilation path 42a and the right ventilation path 42b) are provided for the ventilation path 42 by the ventilation path partition wall portion 36c. A configuration in which a plurality of partition walls 36c are provided and three or more ventilation paths are provided may be employed.

図４及び図６〜図１０に示すように、屈曲管路部材３６の円環状接続部３６ｄは、通気路区画壁部３６ｃの下端部の高さ位置に形成される屈曲管路／通気路形成部３６ｂの外周面３６ｆから外側に所定間隔を置いて円環状に形成されており、外側ケーシング部材３４の内部に屈曲管路部材３６が組み込まれた際に、外側ケーシング部材３４の下端開口部３４ｃに嵌め込まれて接続されるようになっている。
また、円環状接続部３６ｄの下端部は、ベース部材３８を介して床下排水管１８の入口部１８ａに接続される床下側接続管部材２８の下流側接続部となっている。 As shown in FIGS. 4 and 6 to 10, the annular connecting portion 36 d of the bent pipe member 36 is formed at the height position of the lower end portion of the vent path partition wall portion 36 c. It is formed in an annular shape with a predetermined interval outward from the outer peripheral surface 36f of the portion 36b, and when the bent pipe member 36 is incorporated in the outer casing member 34, the lower end opening 34c of the outer casing member 34 is formed. It is inserted into and connected.
Further, the lower end portion of the annular connection portion 36d is a downstream connection portion of the underfloor connection pipe member 28 connected to the inlet portion 18a of the underfloor drain pipe 18 through the base member 38.

さらに、図４及び図６〜図１０に示すように、左側通気路４２ａ及び右側通気路４２ｂの下端は、通気路区画壁部３６ｃの下端部分の高さ位置に屈曲管路／通気路形成部３６ｂの外周面３６ｆとこれと対向する円環状接続部３６ｄの内周面３６ｇとの間に位置し、左側通気路４２ａの複数（３つ）の空気流入口４２ｃ，４２ｄ，４２ｅ及び右側通気路４２ｂの複数（３つ）の空気流入口４２ｆ，４２ｇ，４２ｈをそれぞれ形成している。   Further, as shown in FIGS. 4 and 6 to 10, the lower ends of the left vent passage 42 a and the right vent passage 42 b are bent pipe line / ventilation passage forming portions at the height position of the lower end portion of the vent passage partition wall portion 36 c. A plurality of (three) air inlets 42c, 42d, 42e of the left air passage 42a and a right air passage, which are located between the outer peripheral surface 36f of 36b and the inner peripheral surface 36g of the annular connecting portion 36d opposed thereto. A plurality (three) of air inlets 42f, 42g, and 42h of 42b are formed.

すなわち、左側通気路４２ａの各空気流入口４２ｃ，４２ｄ，４２ｅ及び右側通気路４２ｂの各空気流入口４２ｆ，４２ｇ，４２ｈは、屈曲管路／通気路形成部３６ｂの屈曲管路４０ｂを形成する外周面３６ｆとこれと対向する円環状接続部３６ｄの内周面３６ｇとの間の領域において、各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈを区画する空気流入口区画部３６ｈ（図８〜図１０参照）以外の領域でほぼ全周に亘って形成され、床下排水管１８内の範囲内に配置されており、床下排水管１８内と連通している。   That is, the air inlets 42c, 42d, and 42e of the left air passage 42a and the air inlets 42f, 42g, and 42h of the right air passage 42b form a bent pipe 40b of the bent pipe / vent passage forming portion 36b. In the region between the outer peripheral surface 36f and the inner peripheral surface 36g of the annular connecting portion 36d opposite to the outer peripheral surface 36f, an air inlet partition section 36h that partitions each of the air inlets 42c, 42d, 42e, 42f, 42g, 42h ( It is formed over the entire circumference in a region other than the area (see FIGS. 8 to 10), is disposed within the underfloor drain pipe 18, and communicates with the underfloor drain pipe 18.

また、図４、図８及び図９に示すように、左側通気路４２ａの各空気流入口４２ｃ，４２ｄ，４２ｅ及び右側通気路４２ｂの各空気流入口４２ｆ，４２ｇ，４２ｈのうち、最も後方側（図４、図８及び図９の左側）、すなわち、便器本体側接続管部材２６の側（近位側）に配置される左側通気路４２ａの空気流入口４２ｅ（後方側空気流入口４２ｅ）及び右側通気路４２ｂの空気流入口４２ｈ（後方側空気流入口４２ｈ）に関する流路断面の大きさ（流路断面積）が、前方側（図４、図８及び図９の右側）、すなわち、便器本体側接続管部材２６の反対側（遠位側）に配置される左側通気路４２ａの他の空気流入口４２ｃ，４２ｄ（前方側空気流入口４２ｃ，４２ｄ）及び右側通気路４２ｂの他の空気流入口４２ｆ，４２ｇ（前方側空気流入口４２ｆ，４２ｇ）に関する流路断面の大きさ（流路断面積）よりも大きくなっている。   As shown in FIGS. 4, 8, and 9, the rearmost air inlet 42f, 42g, 42h of the air inlet 42c, 42d, 42e of the left air passage 42a and the air inlet 42f, 42g, 42h of the right air passage 42b. (The left side of FIGS. 4, 8 and 9), that is, the air inlet 42e (rear side air inlet 42e) of the left air passage 42a arranged on the toilet body side connecting pipe member 26 side (proximal side). And the size of the channel cross section (channel cross-sectional area) with respect to the air inlet 42h (rear side air inlet 42h) of the right side air passage 42b is the front side (right side in FIGS. 4, 8 and 9), that is, The other air inlets 42c and 42d (front air inlets 42c and 42d) of the left vent passage 42a and the other of the right vent passage 42b disposed on the opposite side (distal side) of the toilet body side connecting pipe member 26 Air inlet 42f, 42g (front air inflow 42f, it is larger than the size of the flow cross-section about 42 g) (the flow path cross-sectional area).

図４、図６及び図１０に示すように、屈曲管路部材３６の下流側管路形成部３６ｅは、屈曲管路／通気路形成部３６ｂの外周面３６ｆが左側通気路４２ａ及び右側通気路４２ｂの空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈよりも所定距離下方に延びて床下側接続管部材２８の下流側管路４０ｃを形成している。
また、下流側管路形成部３６ｅの下端部３６ａは、床下排水管１８内に配置された床下側接続管部材２８のベース部材３８の管路３８ａ内に位置し、下流側管路形成部３６ｅの外周面とこれと対向するベース部材３８の管路３８ａの内周面との間に空間が形成され、この空間は、上方に位置する左側通気路４２ａ及び右側通気路４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈと連通している。 As shown in FIGS. 4, 6, and 10, the downstream side pipe forming part 36 e of the bent pipe member 36 has an outer peripheral surface 36 f of the bent pipe / air channel forming part 36 b, the left side air passage 42 a and the right side air passage. A downstream pipe line 40c of the underfloor side connecting pipe member 28 is formed extending below a predetermined distance from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of 42b.
Further, the lower end portion 36a of the downstream side pipe forming portion 36e is located in the pipe line 38a of the base member 38 of the underfloor side connecting pipe member 28 disposed in the underfloor drain pipe 18, and the downstream side pipe forming portion 36e. A space is formed between the outer peripheral surface of the left side air passage 42a and the inner peripheral surface of the pipe passage 38a of the base member 38 opposite to the outer peripheral surface. 42c, 42d, 42e, 42f, 42g, 42h.

一方、図４、図６及び図１０に示すように、左側通気路４２ａ及び右側通気路４２ｂの上端は、外側ケーシング部材３４の上部３４ｄとこの上部３４ｄから所定距離下方に位置する屈曲管路／通気路形成部３６ｂの上部３６ｉとの間に位置し、左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊをそれぞれ形成している。   On the other hand, as shown in FIGS. 4, 6 and 10, the upper ends of the left vent passage 42a and the right vent passage 42b are an upper portion 34d of the outer casing member 34 and a bent conduit / It is located between the upper part 36i of the ventilation path forming part 36b, and forms an air outlet 42i of the left ventilation path 42a and an air outlet 42j of the right ventilation path 42b, respectively.

また、図６に示すように、これらの左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊの断面形状は、図６の縦寸法よりも横寸法が長いほぼ扁平形状となっている。   Further, as shown in FIG. 6, the cross-sectional shapes of the air outlet 42i of the left vent passage 42a and the air outlet 42j of the right vent passage 42b are substantially flat with a lateral dimension longer than the vertical dimension of FIG. It has become.

さらに、図４及び図１０に示すように、屈曲管路部材３６の屈曲管路／通気路形成部３６ｂの外側表面は、通気路４２ａ，４２ｂ内において屈曲管路４０ｂ側に形成される内側通気路面Ｆ１を形成し、これら通気路４２ａ，４２ｂの内側通気路面Ｆ１は、通気路４２ａ，４２ｂの上方に位置する左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊからこれらの空気流出口４２ｉ，４２ｊよりも下方に対応して位置する左側通気路４２ａの前方側空気流入口４２ｃ，４２ｄ及び右側通気路４２ｂの前方側空気流入口４２ｆ，４２ｇに向かって下方且つ前側に張り出した曲がり面を形成している。   Further, as shown in FIGS. 4 and 10, the outer surface of the bent pipe / ventilation path forming portion 36b of the bent pipe member 36 is formed on the bent duct 40b side in the vent paths 42a and 42b. A road surface F1 is formed, and the inner air passage surface F1 of the air passages 42a and 42b is formed from the air outlet 42i of the left air passage 42a and the air outlet 42j of the right air passage 42b above the air passages 42a and 42b. The front air inlets 42c and 42d of the left air passage 42a and the front air inlets 42f and 42g of the right air passage 42b which are located corresponding to the lower side of the air outlets 42i and 42j of the right air outlet 42i and 42j. An overhanging curved surface is formed.

また、図４に示すように、通気路４２ａ，４２ｂの内側通気路面Ｆ１と対向する外側ケーシング部材３４の内面は、外側ケーシング部材３４内に形成される通気路４２ａ，４２ｂの外側通気路面Ｆ２を形成し、この外側通気路面Ｆ２は、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊから外側ケーシング部材３４内の上方前端部３４ｅまで前方側に延びて内側通気路面Ｆ１に対して離間した後、外側ケーシング部材３４内の上方前側端部３４ｅから左側通気路４２ａ及び右側通気路４２ｂの最も前方側の空気流入口４２ｃ，４２ｆまで下方に延びている。   Further, as shown in FIG. 4, the inner surface of the outer casing member 34 facing the inner air passage surface F1 of the air passages 42a and 42b is connected to the outer air passage surface F2 of the air passages 42a and 42b formed in the outer casing member 34. The outer air passage surface F2 is formed and extends forward from the air outlets 42i, 42j of the air passages 42a, 42b to the upper front end 34e in the outer casing member 34 and is separated from the inner air passage surface F1. The upper front end 34e in the outer casing member 34 extends downward to the front air inlets 42c and 42f of the left vent passage 42a and the right vent passage 42b.

すなわち、内側通気路面Ｆ１と外側通気路面Ｆ２によって形成される通気路４２ａ，４２ｂは、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊから外側ケーシング部材３４内の上方前端部３４ｅを経て最も前方側の空気流入口４２ｃ，４２ｆまでの通気路領域において、外側ケーシング部材３４内の上方前端部３４ｅを含む通気路断面の大きさが空気流出口４２ｉ，４２ｊ及び空気流入口４２ｃ，４２ｆの断面の大きさよりも拡張された通気路拡張部Ｅを備えている。   That is, the air passages 42a and 42b formed by the inner air passage surface F1 and the outer air passage surface F2 are located on the most front side from the air outlets 42i and 42j of the air passages 42a and 42b through the upper front end portion 34e in the outer casing member 34. The size of the cross section of the air flow path including the upper front end 34e in the outer casing member 34 is the size of the cross section of the air flow outlets 42i and 42j and the air flow inlets 42c and 42f. The air passage expansion portion E is further expanded.

さらに、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊの断面積は、通気路４２ａ，４２ｂのすべての流路断面のうちで最小となっている。   Furthermore, the cross-sectional areas of the air outlets 42i and 42j of the ventilation paths 42a and 42b are the smallest among all the channel cross sections of the ventilation paths 42a and 42b.

さらに、図４及び図５に示すように、床下側接続管部材２８の外側ケーシング部材３４の上部３４ｄにおいて、便器本体側接続部材２６の管路延長用連結管３２の出口部３２ｃが挿入されている外側ケーシング部材３４の入口部３４ａから所定距離Ｌ１の位置から上流側管路４０ａ内の前方側の所定距離Ｌ２の位置にかけて、上流側管路４０ａの上方から下方に向って所定長さ突出する突出部３４ｆが形成されている。
この突出部３４ｆは、非挿入領域Ｒ２の上流側管路４０ａ内の上部且つ左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊの上流側に位置し、汚物を含む排水が挿入領域Ｒ１の上流側管路４０ａから非挿入領域Ｒ２の上流側管路４０ａ内に流入した際に、左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊに汚物が侵入することを防止する汚物侵入防止手段として機能するようになっている。 Further, as shown in FIGS. 4 and 5, the outlet portion 32 c of the pipe extension connecting pipe 32 of the toilet body side connecting member 26 is inserted into the upper part 34 d of the outer casing member 34 of the underfloor side connecting pipe member 28. From the inlet portion 34a of the outer casing member 34 protruding from the position of the predetermined distance L1 to the position of the predetermined distance L2 on the front side in the upstream side pipe line 40a, a predetermined length projects from the upper side of the upstream side pipe line 40a downward. A protruding portion 34f is formed.
The protrusion 34f is located in the upper part of the upstream pipe line 40a of the non-insertion region R2 and upstream of the air outlet 42i of the left vent path 42a and the air outlet 42j of the right vent path 42b. Flows into the upstream pipeline 40a of the non-insertion region R2 from the upstream pipeline 40a of the insertion region R1, and filth is generated at the air outlet 42i of the left ventilation channel 42a and the air outlet 42j of the right ventilation channel 42b. It functions as a filth invasion prevention means for preventing intrusion.

図４に示すように、外側ケーシング部材３４の入口部３４ａから所定距離Ｌ１に位置する便器本体側接続部材２６の管路延長用連結管３２の出口部３２ｃ（挿入領域Ｒ１の上流側管路４０ａ）の流路断面をＳ１とする。
また、図４、図５及び図７に示すように、屈曲管路部材３６の屈曲管路４０ｂを形成するように屈曲する内壁面において、後方側（図４及び図７の左側）、すなわち、便器本体側接続管部材２６の側（近位側）に形成された内壁面（以下「後方側内壁面３６ｊ」）上の最も上流側に位置する点（最上流点）をＵとし、この最上流点Ｕを含む、外側ケーシング部材３４の上部３４ｄの突出部３４ｆにおける非挿入領域Ｒ２の上流側管路４０ａの流路断面をＳ２とする。 As shown in FIG. 4, the outlet portion 32c of the pipe extension connecting pipe 32 of the toilet body side connecting member 26 located at a predetermined distance L1 from the inlet 34a of the outer casing member 34 (the upstream pipe 40a of the insertion region R1). ) Is defined as S1.
Further, as shown in FIGS. 4, 5, and 7, on the inner wall surface that is bent so as to form the bent pipe line 40 b of the bent pipe member 36, the rear side (the left side in FIGS. 4 and 7), that is, A point (most upstream point) located on the most upstream side on the inner wall surface (hereinafter referred to as “rear side inner wall surface 36j”) formed on the toilet body side connecting pipe member 26 side (proximal side) is defined as U. A flow path cross section of the upstream pipe line 40a in the non-insertion region R2 in the protruding part 34f of the upper part 34d of the outer casing member 34 including the upstream point U is defined as S2.

さらに、図４に示すように、屈曲管路部材３６の後方側内壁面３６ｊの最上流点Ｕと屈曲管路部材３６の屈曲管路／通気路形成部３６ｂの上部３６ｉの上縁とを含むように切った屈曲管路４０ｂの流路断面をＳ３とする。この流路断面Ｓ３は、外側ケーシング部材３４の上流側管路４０ａの非挿入領域Ｒ２から屈曲管路部材３６の屈曲管路４０ｂに遷移する、上流側管路４０ａと屈曲管路４０ｂとの境界の流路断面、すなわち、屈曲管路４０ｂの入口部における流路断面となっている。   Further, as shown in FIG. 4, the uppermost flow point U of the rear side inner wall surface 36j of the bent pipe member 36 and the upper edge 36i of the bent pipe / ventilation path forming portion 36b of the bent pipe member 36 are included. The flow path cross section of the bent pipe line 40b cut in this way is defined as S3. This flow path cross-section S3 is a boundary between the upstream pipe line 40a and the bent pipe line 40b that transitions from the non-insertion region R2 of the upstream pipe line 40a of the outer casing member 34 to the bent pipe line 40b of the bent pipe member 36. The cross section of the flow path, that is, the cross section of the flow path at the entrance of the bent pipe 40b.

同様に、図４、図６及び図７に示すように、屈曲管路部材３６の屈曲管路４０ｂから下流側管路４０ｃに遷移する、屈曲管路４０ｂと下流側管路４０ｃとの境界の流路断面をＳ４とする。すなわち、この流路断面Ｓ４は、下流側管路４０ｃの入口部における流路断面となっている。   Similarly, as shown in FIGS. 4, 6, and 7, the boundary between the bent pipe line 40 b and the downstream pipe line 40 c that transitions from the bent pipe line 40 b to the downstream pipe line 40 c of the bent pipe member 36. The channel cross section is S4. That is, the flow path cross section S4 is a flow path cross section at the inlet of the downstream side pipe 40c.

図４及び図５に示すように、便器本体側接続管部材２６の管路延長用連結管３２の出口部３２ｃ（挿入領域Ｒ１の上流側管路４０ａ）の流路断面Ｓ１の大きさと、後方側内壁面３６ｊの最上流点Ｕを含む外側ケーシング部材３４の上部３４ｄの突出部３４ｆにおける非挿入領域Ｒ２の上流側管路４０ａの流路断面Ｓ２の大きさはほぼ同一となっている。   As shown in FIGS. 4 and 5, the size of the flow path cross section S1 of the outlet portion 32c (upstream pipe line 40a of the insertion region R1) of the pipe extension connecting pipe 32 of the toilet main body side connecting pipe member 26 and the rear The size of the channel cross section S2 of the upstream pipe line 40a in the non-insertion region R2 at the protrusion 34f of the upper part 34d of the outer casing member 34 including the most upstream point U of the side inner wall surface 36j is substantially the same.

また、図４及び図９に示すように、外側ケーシング部材３４内の非挿入領域Ｒ２の上流側管路４０ａの上部において、突出部３４ｆの前端（図４の突出部３４ｆの右端）から屈曲管路部材３６の屈曲管路／通気路形成部３６ｅの上部３６ｉとの間の領域には、左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊから流出した空気が合流して非挿入領域Ｒ２の上流側管路４０ａ内に流出される合流空気流出口４２ｋが形成されている。この合流空気流出口４２ｋは下方に向けてほぼ長方形形状で開口しており、この下方に差し向けられた合流空気流出口４２ｋの開口断面Ｓ５は、流路断面Ｓ３を形成している外側ケーシング部材３４内の屈曲管路４０ｂの入口部よりも上方に位置している。   Also, as shown in FIGS. 4 and 9, in the upper part of the upstream pipe line 40 a in the non-insertion region R <b> 2 in the outer casing member 34, the bent pipe extends from the front end of the protrusion 34 f (the right end of the protrusion 34 f in FIG. 4). The air flowing out from the air outlet 42i of the left vent path 42a and the air outlet 42j of the right vent path 42b merges with the region between the bent pipe / vent path forming portion 36e of the path member 36 and the upper portion 36i. Thus, a merging air outlet 42k that flows out into the upstream pipe line 40a of the non-insertion region R2 is formed. The merged air outlet 42k is opened in a substantially rectangular shape downward, and the opening cross section S5 of the merged air outlet 42k directed downward is an outer casing member forming a flow path cross section S3. 34 is located above the inlet portion of the bent pipe line 40b.

また、図４に示すように、合流空気流出口４２ｋの開口断面Ｓ５と下流側管路４０ｃの入口部における流路断面Ｓ４とは、互いに上下方向に対向するように、互いがほぼ平行に配置されており、合流空気流出口４２ｋの開口断面Ｓ５は、非挿入領域Ｒ２の上流側管路４０ａ内の上方に配置されている。   Further, as shown in FIG. 4, the opening cross section S5 of the combined air outlet 42k and the flow path cross section S4 at the inlet of the downstream side pipe 40c are arranged substantially parallel to each other so as to face each other in the vertical direction. The opening cross section S5 of the merging air outlet 42k is disposed above the upstream side pipe line 40a of the non-insertion region R2.

つぎに、図１〜図１１を参照し、本発明の第１実施形態による排水ソケット、及び、それを備えた洗い落し式水洗便器の動作（作用）を説明する。
ここで、図１１は、本発明の第１実施形態による排水ソケットの床下側接続管部材の内部において排水及び通気が行われているときの状態を説明する説明図である。なお、図１１においては、床下側接続管部材の排水管路内の汚物を含む排水の流れを矢印Ｄ、床下側接続管部材の排水管路内において上流側の排水を下流側に引き込もうとする負圧の向きを矢印Ｐ、通気路を流れる空気の流れを矢印Ａで示している。 Next, the operation (action) of the drain socket according to the first embodiment of the present invention and the flush toilet bowl equipped with the drain socket will be described with reference to FIGS.
Here, FIG. 11 is an explanatory view for explaining a state when drainage and ventilation are performed inside the floor connecting pipe member of the drain socket according to the first embodiment of the present invention. In addition, in FIG. 11, the flow of the wastewater including the filth in the drainage pipe line of the underfloor side connection pipe member is an arrow D, and the upstream side drainage is to be drawn downstream in the drainage pipe line of the underfloor side connection pipe member. The direction of negative pressure is indicated by arrow P, and the flow of air flowing through the air passage is indicated by arrow A.

図１〜図１１に示すように、便器使用者が洗い落し式便器１を使用後、洗浄水タンク装置２２の洗浄水タンク２４の排水口２４ａが開放され、この排水口２４ａから洗浄水が便器本体２の導水路６に排水される。
そして、この導水路６内の洗浄水が洗い落し式便器１の第１吐水口１２及び第２吐水口２０から溜水部１４内に吐水され、洗い落し式便器１の洗浄が行われる。
溜水部１４内の汚物を含む排水は、導水路６から溜水部１４への洗浄水の落差による流水作用により、排水トラップ管路８の入口８ａから上昇路８ｂ及び下降路８ｃに押し流され、排水トラップ管路８の出口８ｄへと送られる。 As shown in FIGS. 1 to 11, after the toilet user uses the flush toilet 1, the drain 24 a of the flush water tank 24 of the flush water tank device 22 is opened, and the flush water flows from the drain 24 a to the toilet bowl. It is drained into the water conduit 6 of the main body 2.
Then, the washing water in the water conduit 6 is discharged from the first water outlet 12 and the second water outlet 20 of the flush toilet 1 into the water reservoir 14 and the flush toilet 1 is washed.
The wastewater containing the filth in the water reservoir 14 is pushed away from the inlet 8a of the drain trap pipe 8 to the ascending channel 8b and the descending channel 8c by the flowing water action due to the drop of the washing water from the water conduit 6 to the water reservoir 14. Then, it is sent to the outlet 8d of the drain trap pipe 8.

排水トラップ管路８の出口８ｄから流出した汚物を含む排水は、排水ソケット１６の便器本体側接続管部材２６における便器本体側接続管本体３０の入口部３０ａから便器本体側接続管本体３０の屈曲管路３０ｂ内に流入し、この屈曲管路３０ｃに沿って便器本体側接続管本体３０の前方側へと差し向けられ、便器本体側接続管本体３０の屈曲管路３０ｂの出口３０ｄから流出し、管路延長用連結管３２の入口部３２ａから管路延長用連結管３２の管路３２ｂ内に排水される。そして、管路延長用連結管３２の管路３２ｂ内の排水は、便器本体側接続管部材２６の管路延長用連結管３２の出口部３２ｂ並びに床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａが形成する床下側接続管部材２８の外側ケーシング部材３４の内部に流路断面Ｓ１を形成する排水管路４０の上流側管路４０ａの挿入領域Ｒ１内に流入する。   The waste water containing the filth flowing out from the outlet 8d of the drain trap pipe 8 is bent from the inlet 30a of the toilet main body side connecting pipe main body 30 in the toilet main body side connecting pipe member 26 of the drain socket 16 to the bent side of the toilet main body side connecting pipe main body 30. It flows into the pipe line 30b, is directed to the front side of the toilet main body side connecting pipe body 30 along the bent pipe line 30c, and flows out from the outlet 30d of the bent pipe line 30b of the toilet main body side connecting pipe body 30. The water is drained from the inlet portion 32a of the pipe extension connecting pipe 32 into the pipe 32b of the pipe extension connecting pipe 32. And the drainage in the pipe line 32b of the pipe extension connecting pipe 32 is discharged from the outlet portion 32b of the pipe extension connecting pipe 32 of the toilet body side connecting pipe member 26 and the outer casing member 34 of the underfloor side connecting pipe member 28. The inlet 34a flows into the insertion region R1 of the upstream pipe 40a of the drain pipe 40 that forms the flow path cross section S1 inside the outer casing member 34 of the underfloor side connecting pipe member 28.

床下側接続管部材２８の上流側管路４０ａの挿入領域Ｒ１内における汚物を含む排水は、流路断面Ｓ１の大きさとほぼ等しい大きさの流路断面Ｓ２を形成する上流側管路４０ａの非挿入領域Ｒ２内に流入する。   The waste water containing the filth in the insertion region R1 of the upstream side pipe line 40a of the underfloor side connecting pipe member 28 is not in the upstream side pipe line 40a forming a flow path cross section S2 having a size substantially equal to the size of the flow path cross section S1. It flows into the insertion region R2.

床下側接続管部材２８の上流側管路４０ａの非挿入領域Ｒ２内における汚物を含む排水は、図４に示す前方側へ直進し、流路断面Ｓ３を形成する屈曲管路４０ｂの入口部から屈曲管路４０ｂ内に流入し、この屈曲管路４０ｂの屈曲した内面に沿って、下方に位置する下流側管路４０ｃの入口部に向けて差し向けられる。   Drainage containing dirt in the non-insertion region R2 of the upstream side pipe line 40a of the underfloor side connecting pipe member 28 goes straight forward to the front side shown in FIG. 4, and from the inlet part of the bent pipe line 40b forming the flow path cross section S3. It flows into the bent conduit 40b and is directed toward the inlet of the downstream conduit 40c located below along the bent inner surface of the bent conduit 40b.

床下側接続管部材２８の下流側管路４０ｃ内における汚物を含む排水は、床下排水管１８内に配置されて屈曲管路部材３６の下端部３６ａに位置する下流側管路４０ｃの出口部から床下排水管１８内に最終的に排水される。   Drainage containing filth in the downstream pipe 40 c of the underfloor connection pipe member 28 is disposed in the underfloor drain pipe 18 from the outlet of the downstream pipe 40 c located at the lower end 36 a of the bent pipe member 36. It is finally drained into the underfloor drain pipe 18.

ここで、排水ソケット１６における排水中、特に、図１１に示すように、排水ソケット１６内のすべての排水管路が満水となる、或いは、少なくとも床下側接続管部材２８の内部の排水管路４０（上流側管路４０ａ、屈曲管路４０ｂ、下流側管路４０ｃのすべて）が満水となった際には、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）において、上流側の排水Ｄを下流側に引き込もうとする負圧Ｐが発生し、いわゆるサイホン作用が起こり始める。   Here, during drainage in the drain socket 16, in particular, as shown in FIG. 11, all drain pipes in the drain socket 16 are filled with water, or at least the drain pipe 40 inside the underfloor side connecting pipe member 28. When all of the upstream pipe 40a, the bent pipe 40b, and the downstream pipe 40c are full, the inside of the drain pipe 40 of the underfloor side connecting pipe member 28 (particularly, the bent pipe 40b). , A negative pressure P is generated to draw the upstream drainage D downstream, and so-called siphon action begins to occur.

しかしながら、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）でこのような負圧Ｐ（サイホン作用）が起きた時には、床下側接続管部材２８の排水管路４０の内圧が通気路４２ａ，４２ｂ内の内圧よりも低下している圧力差が生じている状態となっている。このため、排水管路４０内の圧力よりも高い通気路４２ａ，４２ｂ内の空気が空気流出口４２ｉ，４２ｊから引き出されて、合流空気流出口４２ｋから床下側接続管部材２８の排水管路４０内に供給され、その分、床下側接続管部材２８の排水管路４０と通気路４２ａ，４２ｂとの圧力差が相殺され、負圧Ｐが抑制され、究極的には、負圧Ｐがほぼ零に近い状態となる。   However, when such a negative pressure P (siphon action) occurs in the drainage pipe 40 of the underfloor connection pipe member 28 (particularly, in the bent pipe 40b), the drainage pipe 40 of the underfloor connection pipe member 28. There is a pressure difference in which the internal pressure is lower than the internal pressure in the air passages 42a and 42b. For this reason, the air in the ventilation paths 42a and 42b higher than the pressure in the drain pipe 40 is drawn out from the air outlets 42i and 42j, and the drain pipe 40 of the lower floor side connecting pipe member 28 from the merging air outlet 42k. The pressure difference between the drainage pipe 40 of the underfloor side connecting pipe member 28 and the ventilation paths 42a and 42b is offset by that amount, and the negative pressure P is suppressed. Ultimately, the negative pressure P is substantially reduced. It becomes a state close to zero.

また、図１１に示すように、通気路４２ａ，４２ｂ内の空気Ａが空気流出口４２ｉ，４２ｊから排水管路４０内に供給されると、その分、通気路４２ａ，４２ｂ内の圧力は一時的に低下するが、この一時的に低下した圧力に相当する空気Ａは、通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈの下方に形成されている空間、すなわち、屈曲管路部材３６の下流側管路形成部３６ｅの外周面とこれと対向するベース部材３８の管路３８ａの内周面との間に形成されて通気路４２ａ，４２ｂ内よりも圧力が高くなっている空間の空気Ａを各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に取り込むことによって、常に通気路４２ａ，４２ｂ内、特に、通気路４２ａ，４２ｂの通気路拡張部Ｅ内に十分な空気を確保する。   As shown in FIG. 11, when the air A in the air passages 42a and 42b is supplied from the air outlets 42i and 42j into the drain pipe 40, the pressure in the air passages 42a and 42b is temporarily increased. The air A corresponding to the temporarily reduced pressure is a space formed below the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b, That is, it is formed between the outer peripheral surface of the downstream-side pipe forming portion 36e of the bent pipe member 36 and the inner peripheral surface of the pipe 38a of the base member 38 opposed thereto, and has a pressure higher than that in the vent paths 42a and 42b. The air A in the space where the height is high is always taken into the air passages 42a and 42b from the air inlets 42c, 42d, 42e, 42f, 42g and 42h, so that the air A is always in the air passages 42a and 42b. , To ensure sufficient air 42b air passage extension portion E of.

上述した本発明の第１実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、排水ソケット１６による排水中、床下側接続管部材２８の排水管路４０内が満水となった際に、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）で上流側の排水を下流側に引き込もうとする負圧が発生したとしても、床下側接続管部材２８の屈曲管路部材３６の通気路４２（４２ａ，４２ｂ）が、このような負圧を抑制する負圧抑制手段として機能する。この結果、排水管路４０内の圧力よりも高い通気路４２ａ，４２ｂ内の空気が空気流出口４２ｉ，４２ｊから引き出され、合流空気流出口４２ｋから床下側接続管部材２８の排水管路４０内に供給され、その分、床下側接続管部材２８の排水管路４０と通気路４２ａ，４２ｂとの圧力差が相殺され、負圧を抑制することができる。したがって、例えば、施工基準で予め定められた床下排水管１８の管路１８ｂの大きさを変更する等、床下排水管１８の設計変更を行うことなく、上述した負圧を効果的に抑制することができる。また、これらの負圧によって洗い落し式便器本体２の溜水が下流側に引き込まれて溜水不足や封水切れになることも未然に防ぐことができるため、洗い落し式便器１の洗浄性能と節水効果を十分に確保することができる。   According to the drain socket 16 according to the first embodiment of the present invention described above and the wash-out toilet 1 equipped with the drain socket 16, the inside of the drain pipe 40 of the lower connection pipe member 28 is full during drainage by the drain socket 16. Even if a negative pressure is generated in the drainage pipe 40 of the underfloor side connecting pipe member 28 (especially in the bent pipe 40b) and the negative pressure is generated to draw the upstream drainage downstream, The ventilation path 42 (42a, 42b) of the bent pipe member 36 of the pipe member 28 functions as negative pressure suppressing means for suppressing such negative pressure. As a result, the air in the air passages 42a and 42b higher than the pressure in the drainage pipe 40 is drawn out from the air outlets 42i and 42j, and the inside of the drainage pipe 40 of the lower floor side connecting pipe member 28 from the merging air outlet 42k. Accordingly, the pressure difference between the drainage pipe 40 and the ventilation paths 42a and 42b of the underfloor side connecting pipe member 28 is offset, and the negative pressure can be suppressed. Therefore, for example, the above-described negative pressure is effectively suppressed without changing the design of the underfloor drain pipe 18 such as changing the size of the pipe 18b of the underfloor drain pipe 18 determined in advance by the construction standards. Can do. In addition, since the negative pressure can prevent the stored water of the flush toilet body 2 from being drawn downstream and the reservoir water shortage or the seal water running out, the washing performance and water saving of the flush toilet 1 can be prevented. A sufficient effect can be secured.

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、床下側接続管部材２８の外側ケーシング部材３４の内部且つ屈曲管路部材３６の屈曲管路／通気路形成部３６ｂの外側に形成されるデッドスペースを通気路４２ａ，４２ｂとして活用しているため、排水ソケット１６全体の大きさをコンパクトにすることができると共に、通気路４２ａ，４２ｂの容積を十分に確保することができる。したがって、洗い落し式便器１と床下排水管１８との間の比較的狭いスペースでも排水ソケット１６を設置しやすくすることができる。さらに、排水ソケット１６の排水性能を阻害する要因となる空気溜まりを床下側接続管部材２８に別途設けたり、床下側接続管部材２８の外部に通気管を別途設けたりする必要がないため、排水ソケット１６の排水性能を十分に確保することができる。また、床下排水管１８内の臭気が排水ソケットの外部に漏れ出ることも確実に防ぐことができる。   Further, according to the drain socket 16 and the flush toilet 1 provided with the drain socket 16 according to the present embodiment, the inside of the outer casing member 34 of the lower floor side connecting pipe member 28 and the bent pipe line / ventilation of the bent pipe member 36. Since the dead space formed outside the passage forming portion 36b is utilized as the air passages 42a and 42b, the overall size of the drain socket 16 can be made compact and the volume of the air passages 42a and 42b is sufficiently large. Can be secured. Therefore, the drain socket 16 can be easily installed even in a relatively narrow space between the wash-out toilet 1 and the underfloor drain pipe 18. Furthermore, since it is not necessary to separately provide an air reservoir that hinders the drainage performance of the drain socket 16 in the underfloor side connecting pipe member 28 or separately provide a vent pipe outside the underfloor side connecting pipe member 28, The drainage performance of the socket 16 can be sufficiently ensured. Moreover, it is possible to reliably prevent the odor in the underfloor drain pipe 18 from leaking out of the drain socket.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、便器本体側接続管部材２６の管路延長用連結管３２の出口部３２ｃ（挿入領域Ｒ１の上流側管路４０ａ）の流路断面Ｓ１の大きさと、後方側内壁面３６ｊの最上流点Ｕを含む外側ケーシング部材３４の上部３４ｄの突出部３４ｆにおける非挿入領域Ｒ２の上流側管路４０ａの流路断面Ｓ２の大きさはほぼ同一となっており、床下側接続管部材２８の排水管路４０の流路断面の大きさが便器本体側接続管部材２６の管路延長用連結管３２の排水管路３２ｂの流路断面の大きさよりも狭められることなく、床下側接続管部材２８が便器本体側接続管部材２６に接続されているため、排水性能を損なうことなく、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）で負圧が発生することを効果的に抑制することができる。したがって、これらの負圧によって洗い落し式便器１の便器本体２の溜水部１４の溜水が下流側に引き込まれて溜水不足や封水切れになることも未然に防ぐことができ、洗い落し式便器１の洗浄性能と節水効果を十分に確保することができる。   Furthermore, according to the drain socket 16 according to the present embodiment and the flush toilet 1 provided with the drain socket 16, the outlet portion 32c of the pipe extension connecting pipe 32 of the toilet main body side connecting pipe member 26 (upstream of the insertion region R1). The flow of the upstream pipe line 40a in the non-insertion region R2 in the protrusion 34f of the upper part 34d of the outer casing member 34 including the size of the flow path cross section S1 of the side pipe line 40a) and the most upstream point U of the rear side inner wall surface 36j. The size of the channel cross section S2 is substantially the same, and the size of the channel cross section of the drain pipe 40 of the underfloor side connecting pipe member 28 is the drainage of the pipe extension connecting pipe 32 of the toilet main body side connecting pipe member 26. Since the underfloor side connecting pipe member 28 is connected to the toilet main body side connecting pipe member 26 without being narrower than the size of the flow path cross section of the pipe line 32b, the underfloor side connecting pipe member 28 is not deteriorated in drainage performance. In the drainage pipe 40 In particular, it is possible to effectively prevent the negative pressure is generated within the bending line 40b). Therefore, it is possible to prevent the accumulated water in the reservoir part 14 of the toilet body 2 of the flush toilet 1 from being drawn into the downstream side by these negative pressures, and to prevent the accumulated water from being insufficient or from being sealed off. The cleaning performance and water saving effect of the toilet 1 can be sufficiently ensured.

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋが、流路断面Ｓ３を形成している外側ケーシング部材３４内の屈曲管路４０ｂの入口部よりも上方に位置しているため、屈曲管路４０ｂの入口部に流入する排水中に含まれる汚物が通気路４２ａ，４２ｂの合流空気流出口４２ｋや空気流出口４２ｉ，４２ｊを詰ませてしまうことを防止することができる。したがって、床下側接続管部材２８の屈曲管路４０ｂ内で上流側の排水を下流側に引き込もうとする負圧が発生したとしても、床下側接続管部材２８の屈曲管路部材３６の下流外周側空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから屈曲管路部材３６の屈曲管路４０ｂの上流側（上流側管路４０ａ）に流出させることができるため、このような負圧を効果的に抑制することができる。   Further, according to the drain socket 16 according to the present embodiment and the flush toilet 1 provided with the drain socket 16, the air outlets 42i and 42j and the combined air outlet 42k of the ventilation paths 42a and 42b have the flow path cross section S3. Since it is located above the inlet portion of the bent conduit 40b in the outer casing member 34 that is formed, dirt contained in the drainage flowing into the inlet portion of the bent conduit 40b is formed in the vent passages 42a and 42b. It is possible to prevent clogging of the combined air outlet 42k and the air outlets 42i and 42j. Therefore, even if a negative pressure is generated in the bent pipe 40b of the underfloor side connecting pipe member 28 so as to draw the upstream drainage downstream, the downstream outer peripheral side of the bent pipe member 36 of the underfloor side connecting pipe member 28. The air flows from the air inlets 42c, 42d, 42e, 42f, 42g, and 42h through the air passages 42a and 42b, and from the air outlets 42i and 42j and the combined air outlet 42k to the upstream of the bent pipe 40b of the bent pipe member 36. Since it can be made to flow out to the side (upstream side pipe line 40a), such negative pressure can be controlled effectively.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、左側通気路４２ａの各空気流入口４２ｃ，４２ｄ，４２ｅ及び右側通気路４２ｂの各空気流入口４２ｆ，４２ｇ，４２ｈが、屈曲管路／通気路形成部３６ｂの屈曲管路４０ｂを形成する外周面３６ｆとこれと対向する円環状接続部３６ｄの内周面３６ｇとの間の領域において、各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈを区画する空気流入口区画部３６ｈ（図８〜図１０参照）以外の領域でほぼ全周に亘って形成され、床下排水管１８内の範囲内に配置されており、床下排水管１８内と連通している。このため、排水性能を損なうことなく、床下排水管１８内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内により多く取り込みやすくすることができ、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）で上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる。   Furthermore, according to the drain socket 16 and the wash-out toilet 1 including the same according to the present embodiment, the air inlets 42c, 42d, 42e of the left vent passage 42a and the air inlets 42f of the right vent passage 42b. , 42g, and 42h are each air in a region between the outer peripheral surface 36f that forms the bent conduit 40b of the bent conduit / ventilating passage 36b and the inner peripheral surface 36g of the annular connecting portion 36d that faces the outer peripheral surface 36f. It is formed over the entire circumference in a region other than the air inlet section 36h (see FIGS. 8 to 10) that partitions the inlets 42c, 42d, 42e, 42f, 42g, and 42h. It is arranged inside and communicates with the inside of the underfloor drain pipe 18. Therefore, the air in the underfloor drain pipe 18 can be more easily taken into the air passages 42a and 42b from the air inlets 42c, 42d, 42e, 42f, 42g, and 42h without impairing the drainage performance. It is possible to effectively suppress negative pressure that tends to draw upstream wastewater downstream in the drainage conduit 40 (particularly in the bent conduit 40b) of the side connecting pipe member 28.

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、図４、図８及び図９に示すように、左側通気路４２ａの各空気流入口４２ｃ，４２ｄ，４２ｅ及び右側通気路４２ｂの各空気流入口４２ｆ，４２ｇ，４２ｈのうち、最も後方側（図４、図８及び図９の左側）、すなわち、便器本体側接続管部材２６の側（近位側）に配置される左側通気路４２ａの空気流入口４２ｅ（後方側空気流入口４２ｅ）及び右側通気路４２ｂの空気流入口４２ｈ（後方側空気流入口４２ｈ）に関する流路断面の大きさ（流路断面積）が、前方側（図４、図８及び図９の右側）、すなわち、便器本体側接続管部材２６の反対側（遠位側）に配置される左側通気路４２ａの他の空気流入口４２ｃ，４２ｄ（前方側空気流入口４２ｃ，４２ｄ）及び右側通気路４２ｂの他の空気流入口４２ｆ，４２ｇ（前方側空気流入口４２ｆ，４２ｇ）に関する流路断面の大きさ（流路断面積）よりも大きくなっているため、屈曲管路部材の管路を滑らかに屈曲させることができ、負圧を生じさせにくくすることができる。また、特に、床下側接続管部材２８の屈曲管路部材３６の円環状接続部３６ｄ付近における、排水と干渉しにくい床下排水管１８内の便器本体側接続管部材２６側領域内にある空気を後方側空気流入口４２ｃ，４２ｈから通気路内により多く取り込みやすくすることができ、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）で上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる。   Further, according to the drain socket 16 and the flush toilet 1 provided with the drain socket 16 according to the present embodiment, as shown in FIGS. 4, 8 and 9, the air inlets 42 c and 42 d of the left air passage 42 a. 42e and the right air passage 42b, the rearmost side (the left side in FIGS. 4, 8, and 9), that is, the side of the toilet main body side connecting pipe member 26 (proximal). The size (flow) of the cross section of the air flow passage 42e (rear air inlet 42e) of the left air passage 42a and the air inlet 42h (rear air inlet 42h) of the right air passage 42b disposed on the The other air of the left air passage 42a is disposed on the front side (the right side in FIGS. 4, 8 and 9), that is, on the opposite side (distal side) of the toilet body side connecting pipe member 26. Inlet 42c, 42d (front air inlet 42 , 42d) and the other air inlets 42f, 42g (front air inlets 42f, 42g) of the right-side air passage 42b are larger than the size of the channel cross section (channel cross-sectional area). The pipe line of the road member can be bent smoothly, and negative pressure can be hardly generated. In particular, the air in the region of the toilet main body side connection pipe member 26 side in the underfloor drain pipe 18 that does not easily interfere with drainage in the vicinity of the annular connection part 36d of the bent pipe member 36 of the underfloor side connection pipe member 28 is removed. It is possible to make it easier to take in more air into the ventilation path from the rear side air inlets 42c and 42h, and the upstream drainage is downstream in the drainage pipe 40 (particularly in the bent pipe 40b) of the underfloor side connecting pipe member 28. It is possible to effectively suppress the negative pressure to be drawn into the.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、図４、図６及び図１０に示すように、屈曲管路部材３６の下流側管路形成部３６ｅの下端部３６ａが、床下排水管１８内に配置された床下側接続管部材２８のベース部材３８の管路３８ａ内に位置し、下流側管路形成部３６ｅの外周面とこれと対向するベース部材３８の管路３８ａの内周面との間に空間が形成され、この空間は、上方に位置する左側通気路４２ａ及び右側通気路４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈと連通している。このため、床下側接続管部材２８の屈曲管路部材３６の円環状接続部３６ｄ付近における、床下排水管１８内において排水と干渉しにくい空気のスペースを確保することができ、このスペースの空気が通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に供給されるため、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）で上流側の排水を下流側に引き込もうとする負圧を効果的に抑制することができる。   Furthermore, according to the drain socket 16 according to the present embodiment and the flush toilet 1 equipped with the drain socket 16, as shown in FIGS. 4, 6, and 10, the downstream side pipe forming portion of the bent pipe member 36. The lower end 36a of 36e is located in the pipe line 38a of the base member 38 of the underfloor connection pipe member 28 disposed in the underfloor drain pipe 18, and faces the outer peripheral surface of the downstream pipe forming part 36e. A space is formed between the inner peripheral surface of the pipe line 38a of the base member 38, and this space is formed by the air inlets 42c, 42d, 42e, 42f, It communicates with 42g and 42h. Therefore, it is possible to secure an air space that does not easily interfere with the drainage in the underfloor drain pipe 18 in the vicinity of the annular connecting portion 36d of the bent pipe member 36 of the underfloor side connecting pipe member 28, and the air in this space Since the air is supplied into the air passages 42a and 42b from the air inlets 42c, 42d, 42e, 42f, 42g, and 42h of the air passages 42a and 42b, the inside of the drain pipe 40 of the underfloor side connecting pipe member 28 (particularly, bent) It is possible to effectively suppress the negative pressure that tends to draw the upstream drainage downstream in the pipeline 40b).

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、図６に示すように、これらの左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊの断面形状は、図６の縦寸法よりも横寸法が長いほぼ扁平形状となっているため、この扁平断面形状の空気流出口４２ｉ，４２ｊの断面積と同一断面積で且つこの断面形状が円形である場合の空気流出口に比べて、万一排水中の汚物が空気流出口４２ｉ，４２ｊに付着して詰まりかけたとしても、空気流出口４２ｉ，４２ｊの扁平断面全体が汚物で完全に塞がれにくくすることができる。したがって、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Further, according to the drain socket 16 and the wash-out toilet 1 having the same according to the present embodiment, as shown in FIG. 6, the air outlet 42i of the left vent passage 42a and the air of the right vent passage 42b. Since the cross-sectional shape of the outlet 42j is a substantially flat shape whose lateral dimension is longer than the vertical dimension of FIG. 6, the cross-sectional area is the same as that of the air outlets 42i and 42j having the flat cross-sectional shape. Compared to the air outlet when the shape is circular, even if filth in the drainage adheres to the air outlets 42i and 42j and becomes clogged, the entire flat cross section of the air outlets 42i and 42j is filth. It can be made difficult to block completely. Therefore, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe line 40b) of the underfloor side connecting pipe member 28, the downstream outer peripheral side of the bent pipe line 40b when a negative pressure is generated to draw the upstream drainage downstream. The air in the underfloor drain pipe 18 at the air outlets 42i, 42j and the combined air outlets from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b through the air passages 42a, 42b. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out from 42k to the upstream conduit 40a.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、屈曲管路部材３６が床下側接続管部材２８の内側に組み込まれ、屈曲管路部材３６の屈曲管路／通気路形成部３６ｂが、この内側に床下側接続管部材２８の屈曲管路４０ｂを形成すると共に、屈曲管路／通気路形成部３６ｂの外側且つ且つ外側ケーシング部材３４の内側に通気路４２を形成しているため、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Furthermore, according to the drain socket 16 according to the present embodiment and the flush toilet 1 equipped with the same, the bent pipe member 36 is incorporated inside the underfloor side connecting pipe member 28, and the bent pipe member 36 is bent. The pipe line / ventilation path forming part 36b forms a bent pipe line 40b of the underfloor side connecting pipe member 28 on the inner side, and vents outside the bent pipe line / ventilation path forming part 36b and inside the outer casing member 34. Since the passage 42 is formed, bending occurs when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe 40b) of the underfloor side connecting pipe member 28 so as to draw the upstream drainage downstream. Air in the underfloor drain pipe 18 on the downstream outer peripheral side of the pipe line 40b is passed from the air inlets 42c, 42d, 42e, 42f, 42g, and 42h of the vent paths 42a and 42b to the air outlet 42a and 42b. It can be allowed to flow to the upstream side pipe 40a from 42j and the merging air outlet 42k, to reliably suppress the negative pressure in the bending duct 40b.

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、図４に示すように、合流空気流出口４２ｋの開口断面Ｓ５と下流側管路４０ｃの入口部における流路断面Ｓ４とは、互いに上下方向に対向するように、互いがほぼ平行に配置されており、合流空気流出口４２ｋの開口断面Ｓ５は、非挿入領域Ｒ２の上流側管路４０ａ内の上方に配置されている。したがって、床下側接続管部材２８の排水管路４０内の排水に含まれる汚物は上流側管路４０ａから屈曲管路４０ｂを経て下方の下流側管路４０ｃへ確実に排出されるため、床下側接続管部材２８の通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋには汚物を詰まりにくくすることができる。この結果、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Moreover, according to the drain socket 16 and the wash-out toilet 1 provided with the same according to the present embodiment, as shown in FIG. 4, the opening cross section S5 of the merging air outlet 42k and the inlet portion of the downstream pipe 40c. Are arranged substantially parallel to each other so as to face each other in the vertical direction, and the opening cross section S5 of the merging air outlet 42k is located in the upstream side pipe line 40a of the non-insertion region R2. It is arranged above. Accordingly, the filth contained in the drainage in the drainage pipe 40 of the underfloor side connecting pipe member 28 is reliably discharged from the upstream pipe 40a through the bent pipe 40b to the lower downstream pipe 40c. The air outlets 42i and 42j and the combined air outlet 42k of the air passages 42a and 42b of the connecting pipe member 28 can be made difficult to clog the filth. As a result, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe 40b) of the underfloor side connecting pipe member 28, the downstream outer periphery of the bent pipe 40b is generated. The air in the underfloor drain pipe 18 on the side passes through the air passages 42a, 42b from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b and the air outlets 42i, 42j and the combined air flow. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out from the outlet 42k to the upstream conduit 40a.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、図４及び図５に示すように、床下側接続管部材２８の外側ケーシング部材３４の上部３４ｄにおいて、便器本体側接続部材２６の管路延長用連結管３２の出口部３２ｃが挿入されている外側ケーシング部材３４の入口部３４ａから所定距離Ｌ１の位置から上流側管路４０ａ内の前方側の所定距離Ｌ２の位置にかけて、上流側管路４０ａの上方から下方に向って所定長さ突出する突出部３４ｆが形成されている。この突出部３４ｆは、非挿入領域Ｒ２の上流側管路４０ａ内の上部且つ左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊの上流側に位置し、汚物を含む排水が挿入領域Ｒ１の上流側管路４０ａから非挿入領域Ｒ２の上流側管路４０ａ内に流入した際に、左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊに汚物が侵入することを防止する汚物侵入防止手段として機能するようになっているため、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋにおける汚物を詰まりにくくすることができる。したがって、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流側にある床下排水管１８内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Furthermore, according to the drain socket 16 according to the present embodiment and the flush toilet 1 equipped with the drain socket 16, as shown in FIGS. 4 and 5, in the upper part 34 d of the outer casing member 34 of the underfloor side connecting pipe member 28. The predetermined distance on the front side in the upstream line 40a from a position at a predetermined distance L1 from the inlet 34a of the outer casing member 34 into which the outlet 32c of the pipe extension connecting pipe 32 of the toilet body side connecting member 26 is inserted. A projecting portion 34f that projects a predetermined length from the upper side to the lower side of the upstream pipe line 40a is formed over the position of the distance L2. The protrusion 34f is located in the upper part of the upstream pipe line 40a of the non-insertion region R2 and upstream of the air outlet 42i of the left vent path 42a and the air outlet 42j of the right vent path 42b. Flows into the upstream pipeline 40a of the non-insertion region R2 from the upstream pipeline 40a of the insertion region R1, and filth is generated at the air outlet 42i of the left ventilation channel 42a and the air outlet 42j of the right ventilation channel 42b. Since it functions as a filth intrusion prevention means for preventing intrusion, it is possible to prevent clogging of filth at the air outlets 42i and 42j and the merging air outlet 42k of the air passages 42a and 42b. Therefore, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe 40b) of the underfloor side connecting pipe member 28 to draw the upstream drainage to the downstream side, the downstream side of the bent pipe 40b. Air in a certain underfloor drain pipe 18 is caused to flow into the air passages 42a and 42b from the air inlets 42c, 42d, 42e, 42f, 42g, and 42h, and upstream from the air outlets 42i and 42j and the combined air outlet 42k. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out into the conduit 40a.

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、床下側接続管部材２８の通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊの断面積が、通気路４２ａ，４２ｂのすべての流路断面のうちで最小となっているため、万一床下側接続管部材２８の上流側管路４０ａ内の排水中の汚物が空気流出口４２ｉ，４２ｊの少なくとも一方から通気路４２ａ，４２ｂ内の少なくとも一方に入り込んでしまったとしても、空気流出口４２ｉ，４２ｊよりも流路断面の断面積が大きい通気路４２ａ，４２ｂ内の下流側に汚物が自然に流されるため、汚物を通気路４２ａ，４２ｂ内で詰まりにくくすることができる。したがって、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Further, according to the drain socket 16 according to the present embodiment and the wash-out toilet 1 provided with the drain socket 16, the cross-sectional areas of the air outlets 42i and 42j of the vent passages 42a and 42b of the underfloor side connecting pipe member 28 are air vents. Since it is the smallest of all the channel cross-sections of the channels 42a and 42b, filth in the drainage in the upstream pipeline 40a of the floor lower connection pipe member 28 should be at least one of the air outlets 42i and 42j. Even if the air enters into at least one of the air passages 42a and 42b, the filth naturally flows to the downstream side of the air passages 42a and 42b having a larger cross-sectional area than the air outlets 42i and 42j. Therefore, it is possible to make it difficult for clogging up dirt in the air passages 42a and 42b. Therefore, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe line 40b) of the underfloor side connecting pipe member 28, the downstream outer peripheral side of the bent pipe line 40b when a negative pressure is generated to draw the upstream drainage downstream. The air in the underfloor drain pipe 18 at the air outlets 42i, 42j and the combined air outlets from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b through the air passages 42a, 42b. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out from 42k to the upstream conduit 40a.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、図４及び図１０に示すように、屈曲管路部材３６の屈曲管路／通気路形成部３６ｂの外側表面は、通気路４２ａ，４２ｂ内において屈曲管路４０ｂ側に形成される内側通気路面Ｆ１を形成し、これら通気路４２ａ，４２ｂの内側通気路面Ｆ１は、通気路４２ａ，４２ｂの上方に位置する左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊからこれらの空気流出口４２ｉ，４２ｊよりも下方に対応して位置する左側通気路４２ａ及び右側通気路４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈに向かって下方且つ前側に張り出した曲がり面を形成している。このため、万一床下側接続管部材２８の上流側管路４０ａ内の排水中の汚物が空気流出口４２ｉ，４２ｊの少なくとも一方から通気路４２ａ，４２ｂ内の少なくとも一方に入り込んでしまったとしても、通気路４２ａ，４２ｂ内の汚物が内側通気路面Ｆ１に沿って通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈに導かれ、これらの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから床下側接続管部材２８の排水管路４０の下流側に位置する床下排水管１８内に向けて排出されるため、通気路４２ａ，４２ｂ内に汚物が詰まることを防ぐことができる。したがって、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。 Furthermore, according to the drain socket 16 according to the present embodiment and the flush toilet 1 equipped with the same, as shown in FIGS. 4 and 10, the bent pipe / ventilation path forming portion 36 b of the bent pipe member 36. The outer surface forms an inner air passage surface F1 formed on the bent conduit 40b side in the air passages 42a and 42b, and the inner air passage surface F1 of the air passages 42a and 42b is located above the air passages 42a and 42b. From the air outlet 42i of the left vent passage 42a and the air outlet 42j of the right vent passage 42b, the left vent passage 42a and the right vent passage 42b that are located below the air outlets 42i and 42j, respectively. A curved surface projecting downward and forward toward the air inlets 42c, 42d, 42e, 42f, 42g, and 42h is formed. For this reason, even if filth in the waste water in the upstream pipe line 40a of the floor lower connection pipe member 28 enters at least one of the air flow paths 42a, 42j from at least one of the air outlets 42i, 42j. The filth in the air passages 42a and 42b is guided along the inner air passage surface F1 to the air inlets 42c, 42d, 42e, 42f, 42g, and 42h of the air passages 42a and 42b. 42d, 42e, 42f, 42g, and 42h are discharged toward the underfloor drain pipe 18 located downstream of the drain pipe 40 of the underfloor side connecting pipe member 28, so that dirt is clogged in the vent paths 42a and 42b. Can be prevented. Therefore, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe line 40b) of the underfloor side connecting pipe member 28, the downstream outer peripheral side of the bent pipe line 40b when a negative pressure is generated to draw the upstream drainage downstream. The air in the underfloor drain pipe 18 at the air outlets 42i, 42j and the combined air outlets from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b through the air passages 42a, 42b. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out from 42k to the upstream conduit 40a.

また、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、屈曲管路部材３６の通気路区画壁部３６ｃによって区画された２つの通気路４２ａ，４２ｂとこれらに対応する空気流出口４２ｉ，４２ｊが確保されているため、万一床下側接続管部材２８の上流側管路４０ａ内の排水中の汚物が空気流出口４２ｉ，４２ｊ一方から通気路４２ａ，４２ｂ内の一方に入り込んでしまったとしても、他方の空気流出口及びこれと対応する通気路において、汚物が入り込まない、或いは、汚物が入り込む量が少ない空気流出口及び通気路を確保することができる。したがって、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Further, according to the drain socket 16 according to the present embodiment and the flush toilet 1 equipped with the drain socket 16, the two air passages 42a and 42b partitioned by the air passage partition wall portion 36c of the bent duct member 36 and these Since the air outlets 42i and 42j corresponding to the above are secured, the filth in the drainage in the upstream side pipe line 40a of the lower floor connecting pipe member 28 should be vented from one of the air outlets 42i and 42j. Even if it enters one of the insides, it is possible to secure an air outlet and an air passage in which the filth does not enter or the amount of the filth enters is small in the other air outlet and the corresponding air passage. . Therefore, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe line 40b) of the underfloor side connecting pipe member 28, the downstream outer peripheral side of the bent pipe line 40b when a negative pressure is generated to draw the upstream drainage downstream. The air in the underfloor drain pipe 18 at the air outlets 42i, 42j and the combined air outlets from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b through the air passages 42a, 42b. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out from 42k to the upstream conduit 40a.

さらに、本実施形態による排水ソケット１６、及び、それを備えた洗い落し式便器１によれば、内側通気路面Ｆ１と外側通気路面Ｆ２によって形成される通気路４２ａ，４２ｂが通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊから外側ケーシング部材３４内の上方前端部３４ｅを経て最も前方側の空気流入口４２ｃ，４２ｆまでの通気路領域において、外側ケーシング部材３４内の上方前端部３４ｅを含む通気路断面の大きさが空気流出口４２ｉ，４２ｊ及び空気流入口４２ｃ，４２ｆの断面の大きさよりも拡張された通気路拡張部Ｅを備えているため、万一床下側接続管部材２８の上流側管路４０ａ内の排水中の汚物が空気流出口４２ｉ，４２ｊの少なくとも一方から通気路４２ａ，４２ｂ内の少なくとも一方に入り込んでしまったとしても、通気路拡張部Ｅによって通気路４２ａ，４２ｂの断面の大きさが空気流出口４２ｉ，４２ｊ及び最も前方側の空気流入口４２ｃ，４２ｆの断面の大きさよりも拡張されて通気路４２ｉ，４２ｊ内の容積が比較的広くなっているため、通気路４２ｉ，４２ｊ内に汚物を蓄積しにくくすることができる。したがって、床下側接続管部材２８の排水管路４０（特に、屈曲管路４０ｂ）内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路４０ｂの下流外周側にある床下排水管１８内の空気を通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂを経て空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路４０ａに流出させて、屈曲管路４０ｂ内の負圧を確実に抑制することができる。   Furthermore, according to the drain socket 16 according to the present embodiment and the flush toilet 1 provided with the drain socket 16, the air passages 42a and 42b formed by the inner air passage surface F1 and the outer air passage surface F2 are the air passages 42a and 42b. An air passage including the upper front end 34e in the outer casing member 34 in the air passage region from the air outlets 42i and 42j through the upper front end 34e in the outer casing member 34 to the foremost air inlet 42c and 42f. Since the air passage extension portion E having a cross-sectional size larger than the cross-sectional sizes of the air outlets 42i and 42j and the air inlets 42c and 42f is provided, the upstream side pipe of the floor lower side connecting pipe member 28 should be provided. The filth in the waste water in the passage 40a has entered at least one of the air passages 42a and 42b from at least one of the air outlets 42i and 42j. However, the size of the cross section of the air passages 42a and 42b is expanded by the air passage expansion portion E from the size of the cross section of the air outlets 42i and 42j and the front air inlets 42c and 42f. Since the volume in 42j is relatively wide, it is possible to make it difficult to accumulate filth in the air passages 42i and 42j. Therefore, when a negative pressure is generated in the drainage pipe 40 (particularly, the bent pipe line 40b) of the underfloor side connecting pipe member 28, the downstream outer peripheral side of the bent pipe line 40b when a negative pressure is generated to draw the upstream drainage downstream. The air in the underfloor drain pipe 18 at the air outlets 42i, 42j and the combined air outlets from the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b through the air passages 42a, 42b. The negative pressure in the bent conduit 40b can be reliably suppressed by flowing out from 42k to the upstream conduit 40a.

つぎに、図１２を参照して、本発明の第２実施形態による排水ソケットを説明する。
ここで、図１２は、本発明の第２実施形態による排水ソケットの側面断面図である。なお、図１２において、上述した本発明の第１実施形態による排水ソケットの部分と同一の部分については同一の符号を付し、それらの説明は省略する。 Next, a drain socket according to a second embodiment of the present invention will be described with reference to FIG.
Here, FIG. 12 is a side sectional view of the drain socket according to the second embodiment of the present invention. In FIG. 12, the same parts as those of the drain socket according to the first embodiment of the present invention described above are denoted by the same reference numerals, and the description thereof is omitted.

図１２に示すように、本発明の第２実施形態による排水ソケット５０においては、床下排水管１８の入口部１８ａの位置が便器本体側接続管本体３０の位置に対して比較的距離が離れている上述した本発明の第１実施形態による排水ソケット１６とは異なり、床下排水管１８の入口部１８ａの位置が便器本体側接続管本体３０の位置に対して隣接しているため、便器本体側接続管部材２６の管路延長用連結管３２自体を省略した形態となっている。
すなわち、便器本体側接続管本体３０の突出管路３０ｃの先端３０ｅが便器本体側接続管部材２６の出口部となり、床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａ内に挿入され、この便器本体側接続管部材２６の突出管路３０ｃの先端３０ｅ（出口部）と床下側接続管部材２８の外側ケーシング部材３４の入口部３４ａとを直接的に連結することにより、便器本体側接続管部材２６と床下側接続管部材２８とを接続した形態となっている。 As shown in FIG. 12, in the drain socket 50 according to the second embodiment of the present invention, the position of the inlet 18 a of the underfloor drain pipe 18 is relatively far from the position of the toilet main body side connection pipe body 30. Unlike the drain socket 16 according to the first embodiment of the present invention described above, the position of the inlet portion 18a of the underfloor drain pipe 18 is adjacent to the position of the toilet body side connecting pipe body 30, so that the toilet body side In this configuration, the connecting pipe 32 for extending the pipe of the connecting pipe member 26 is omitted.
That is, the tip 30e of the protruding conduit 30c of the toilet main body side connecting pipe main body 30 serves as an outlet portion of the toilet main body side connecting pipe member 26, and is inserted into the inlet portion 34a of the outer casing member 34 of the underfloor side connecting pipe member 28. By connecting the front end 30e (exit part) of the protruding pipe line 30c of the toilet main body side connecting pipe member 26 and the inlet part 34a of the outer casing member 34 of the underfloor side connecting pipe member 28, the toilet main body side connection is achieved. The pipe member 26 and the underfloor side connecting pipe member 28 are connected.

上述した本発明の第２実施形態による排水ソケット５０によれば、床下排水管１８の入口部１８ａの位置が便器本体側接続管本体３０の位置に対して隣接している状態においても、便器本体側接続管部材２６と床下側接続管部材２８とを容易に接続することができ、床下側接続管部材２８の排水管路４０内が満水となった際に、床下側接続管部材２８の排水管路４０内（特に、屈曲管路４０ｂ内）で上流側の排水を下流側に引き込もうとする負圧が発生したとしても、このような負圧を抑制することができる。また、例えば、施工基準で予め定められた床下排水管１８の管路１８ｂの大きさを変更する等、床下排水管１８の設計変更を行うことなく、上述した負圧を効果的に抑制することができる。さらに、これらの負圧によって洗い落し式便器本体２の溜水が下流側に引き込まれて溜水不足や封水切れになることも未然に防ぐことができるため、洗い落し式便器１の洗浄性能と節水効果を十分に確保することができる。   According to the drain socket 50 according to the second embodiment of the present invention described above, even when the position of the inlet portion 18a of the underfloor drain pipe 18 is adjacent to the position of the toilet body side connecting pipe body 30, the toilet body The side connecting pipe member 26 and the underfloor side connecting pipe member 28 can be easily connected. When the drainage pipe 40 of the underfloor side connecting pipe member 28 is full of water, the drainage of the underfloor side connecting pipe member 28 is performed. Even if a negative pressure is generated in the pipeline 40 (particularly in the bent pipeline 40b) to draw the upstream drainage downstream, such a negative pressure can be suppressed. In addition, for example, the above-described negative pressure is effectively suppressed without changing the design of the underfloor drain pipe 18 such as changing the size of the pipe 18b of the underfloor drain pipe 18 predetermined by the construction standard. Can do. Furthermore, it is possible to prevent the water stored in the flush toilet body 2 from being drawn into the downstream side by these negative pressures, resulting in insufficient water retention or running out of water. A sufficient effect can be secured.

なお、上述した本発明の第１実施形態及び第２実施形態による排水ソケット１６，５０においては、例として、便器本体側接続管部材２６及び床下側接続管部材２８を別体の部材とする形態について説明したが、このような形態に限定されず、両部材２６，２８が一体に形成された一部材とする形態にしてもよい。   In the drain sockets 16 and 50 according to the first and second embodiments of the present invention described above, as an example, the toilet body side connecting pipe member 26 and the underfloor side connecting pipe member 28 are separate members. However, the present invention is not limited to such a form, and a form in which both members 26 and 28 are integrally formed may be adopted.

また、上述した本発明の第１実施形態及び第２実施形態による排水ソケット１６，５０においては、例として、通気路４２が床下側接続管部材２８の屈曲管路部材３６の屈曲管路４０ｂの外周側に形成された形態について説明したが、このような形態に限定されず、通気路については、床下側接続管部材２８の屈曲管路部材３６の屈曲管路４０ｂの内周側に形成された形態にしてもよい。   Further, in the drain sockets 16 and 50 according to the first and second embodiments of the present invention described above, for example, the air passage 42 is connected to the bent conduit 40b of the bent conduit member 36 of the underfloor side connecting tube member 28. Although the form formed on the outer peripheral side has been described, the present invention is not limited to such a form, and the air passage is formed on the inner peripheral side of the bent pipe line 40b of the bent pipe line member 36 of the underfloor side connecting pipe member 28. It may be a different form.

さらに、上述した本発明の第１実施形態及び第２実施形態による排水ソケット１６，５０においては、例として、外側ケーシング部材３４と屈曲管路部材３６が別部材である形態について説明したが、このような形態に限定されず、外側ケーシング部材３４及び屈曲管路部材３６を一体的に形成された部材とし、床下側接続管部材２８の内部の排水管路４０及び通気路４２ａ，４２ｂを一つの部材で形成するようにしてもよい。   Furthermore, in the drain sockets 16 and 50 according to the first and second embodiments of the present invention described above, as an example, the outer casing member 34 and the bent pipe member 36 are described as separate members. The outer casing member 34 and the bent pipe member 36 are integrally formed, and the drain pipe 40 and the vent paths 42a and 42b in the lower floor side connecting pipe member 28 are provided as a single member. You may make it form with a member.

つぎに、図１３を参照し、本発明の一実施形態による排水管部材を説明する。
図１３は、本発明の一実施形態による排水管部材の側面断面図である。ここで、図１３において、上述した本発明の第１実施形態及び第２実施形態による排水ソケットの部分と同一の部分については同一の符号を付し、それらの説明は省略する。なお、図１３においては、排水管１００の管路内の汚物を含む排水の流れを矢印Ｄ、床下側接続管部材の排水管路内において上流側の排水を下流側に引き込もうとする負圧の向きを矢印Ｐ、通気路を流れる空気の流れを矢印Ａで示している。 Next, a drain pipe member according to an embodiment of the present invention will be described with reference to FIG.
FIG. 13 is a side cross-sectional view of a drain pipe member according to an embodiment of the present invention. Here, in FIG. 13, the same parts as those of the drain socket according to the first embodiment and the second embodiment of the present invention described above are denoted by the same reference numerals, and the description thereof is omitted. In addition, in FIG. 13, the flow of the waste water containing the filth in the pipe line of the drain pipe 100 is indicated by arrow D, and the negative pressure which tries to draw the upstream drainage downstream in the drain pipe line of the lower floor connecting pipe member. The direction is indicated by arrow P, and the flow of air flowing through the ventilation path is indicated by arrow A.

図１３に示すように、本発明の一実施形態による排水管部材１００は、上流側から下流側にかけて、横管部１０２、エルボ部１０４、及び、縦管部１０６を備えている。
横管部１０２は水平方向に延びており、横管部１０２の上流側端部は、排水管部材１００の上流側に位置する洗い落し式便器又は洗面台等の衛生器具（図示せず）の排水路（図示せず）の出口部（図示せず）、又は、この出口部に接続された排水管（図示せず）に接続されている。 As shown in FIG. 13, a drain pipe member 100 according to an embodiment of the present invention includes a horizontal pipe part 102, an elbow part 104, and a vertical pipe part 106 from the upstream side to the downstream side.
The horizontal tube portion 102 extends in the horizontal direction, and the upstream end portion of the horizontal tube portion 102 is a sanitary instrument (not shown) such as a wash-out toilet or a washstand located on the upstream side of the drain pipe member 100. It is connected to an outlet (not shown) of a drainage channel (not shown) or a drain pipe (not shown) connected to the outlet.

横管部１０２の下流側端部は、エルボ部１０４の上流側端部１０４ａに接続されており、エルボ部１０４の下流側端部１０４ｂは、上下方向に延びる縦管部１０６の上端に接続されている。
なお、本実施形態においては、縦管部１０６は、床から上方に配置されているが、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０において説明した床下排水管１８と同様に、床下に配置されていてもよい。 The downstream end portion of the horizontal tube portion 102 is connected to the upstream end portion 104a of the elbow portion 104, and the downstream end portion 104b of the elbow portion 104 is connected to the upper end of the vertical tube portion 106 extending in the vertical direction. ing.
In addition, in this embodiment, although the vertical pipe part 106 is arrange | positioned upwards from a floor, it is under floor demonstrated in the drain socket 16 by 1st Embodiment of this invention mentioned above and the drain socket 50 by 2nd Embodiment. Similar to the drain pipe 18, it may be arranged under the floor.

エルボ部１０４の内部には、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０の屈曲管路部材３６と同一形態の屈曲管路部材１０８が設けられている。   Inside the elbow portion 104, the bent pipe member 108 having the same form as the bent pipe member 36 of the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above is provided. .

屈曲管路部材１０８は、排水管部材１００の上流側の衛生器具（図示せず）から横管部１０２の管路（以下「上流側管路１１０ａ」）内に排出された排水Ｄの流路（図１３の左から右に向かう方向の流路）をこの流路の方向とは異なる方向、すなわち、縦管部１０６の管路（以下「下流側管路１１０ｃ」）内に形成される流路（図１３の上から下に向かう方向の流路）に屈曲させる屈曲管路１１０ｂを形成している。   The bent pipe member 108 is a flow path for drainage D discharged from a sanitary instrument (not shown) on the upstream side of the drain pipe member 100 into the pipe (hereinafter referred to as “upstream pipe 110 a”) of the horizontal pipe 102. (Flow path in the direction from left to right in FIG. 13) is different from the flow path direction, that is, the flow formed in the pipe line of the vertical pipe part 106 (hereinafter, “downstream pipe line 110c”). A bent pipe line 110b is formed to be bent in a path (flow path in the direction from the top to the bottom in FIG. 13).

屈曲管路部材１０８の屈曲管路１１０ｂの外側には、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０の通気路４２ａ，４２ｂと同一形態の通気路が形成されている。   On the outside of the bent pipe line 110b of the bent pipe member 108, there are vent paths having the same form as the vent paths 42a and 42b of the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment. Is formed.

また、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの空気流入口、空気流出口、及び、合流空気流出口についても、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０の通気路４２ａ，４２ｂの空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈ、空気流出口４２ｉ，４２ｊ、及び、合流空気流出口４２ｋと同一形態となっている。   In addition, regarding the air inlet, the air outlet, and the merged air outlet of the air passages 42a and 42b formed by the bent pipe member 108, the drain socket 16 and the second outlet according to the first embodiment of the present invention described above. The air inlets 42c, 42d, 42e, 42f, 42g, 42h, the air outlets 42i, 42j, and the combined air outlet 42k of the vent passages 42a, 42b of the drain socket 50 according to the embodiment are the same form.

さらに、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの各空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊの断面形状についても、縦寸法よりも横寸法が長いほぼ扁平形状となっている。   Further, as with the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above, the air outlets 42i of the vent paths 42a, 42b formed by the bent pipe members 108, respectively. The cross-sectional shape of the air outlet 42j of the right air passage 42b is also substantially flat with a horizontal dimension longer than the vertical dimension.

また、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊの断面積についても、通気路４２ａ，４２ｂのすべての流路断面のうちで最小となっている。   Further, similarly to the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment, the air outlets 42i, 42a, 42b of the vent paths 42a, 42b formed by the bent pipe members 108, respectively. The cross-sectional area of 42j is also the smallest among all the channel cross sections of the air passages 42a and 42b.

さらに、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの合流空気流出口４２ｋの開口断面Ｓ５と下流側管路４０ｃの入口部における流路断面Ｓ４とは、互いに上下方向に対向するように、互いがほぼ平行に配置されており、合流空気流出口４２ｋの開口断面Ｓ５は、上流側管路１１０ａ内の上方に配置されている。   Further, similarly to the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above, the merging air outlet 42k of the vent paths 42a, 42b formed by the bent pipe member 108 is used. The opening cross section S5 and the flow path cross section S4 at the inlet of the downstream side pipe 40c are arranged substantially parallel to each other so as to face each other in the vertical direction, and the opening cross section S5 of the merging air outlet 42k is The upper pipe line 110a is disposed above.

また、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、エルボ部１０４の上部１０４ｃにおいて、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊから所定距離の上流側の位置には、汚物が侵入することを防止する汚物侵入防止手段である突出部１１２が形成されている。   Further, similarly to the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above, the air outlets 42i, 42j of the air passages 42a, 42b are formed in the upper portion 104c of the elbow portion 104. A protrusion 112, which is a filth intrusion prevention means for preventing filth from entering, is formed at a position upstream of a predetermined distance from.

さらに、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、屈曲管路部材１０８の屈曲管路／通気路形成部３６ｂの外側表面は、通気路４２ａ，４２ｂ内において屈曲管路１１０ｂ側に形成される内側通気路面Ｆ１を形成し、これら通気路４２ａ，４２ｂの内側通気路面Ｆ１は、通気路４２ａ，４２ｂの上方に位置する左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊからこれらの空気流出口４２ｉ，４２ｊよりも下方に対応して位置する左側通気路４２ａの前方側空気流入口４２ｃ，４２ｄ及び右側通気路４２ｂの前方側空気流入口４２ｆ，４２ｇに向かって下方且つ前側に張り出した曲がり面を形成している。   Further, as with the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above, the outer surface of the bent pipe / ventilation path forming portion 36b of the bent pipe member 108 is: An inner air passage surface F1 formed on the bent conduit 110b side is formed in the air passages 42a and 42b, and the inner air passage surface F1 of the air passages 42a and 42b is a left air passage located above the air passages 42a and 42b. The front air inlets 42c and 42d and the right side ventilation of the left side air passage 42a located below the air outlets 42i and 42j from the air outlet 42i of the side 42a and the air outlet 42j of the right side air passage 42b. A curved surface projecting downward and forward toward the front air inlets 42f and 42g of the passage 42b is formed.

また、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、屈曲管路部材１０８には、屈曲管路／通気路形成部３６ｂの外面に沿って前方側に突出して上下方向に延び、通気路４２の流路断面を２つの通気路に区画する通気路区画壁部３６ｃが設けられている。   Similarly to the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above, the bent pipe member 108 is provided on the outer surface of the bent pipe / ventilation path forming portion 36b. An air passage partition wall portion 36c that projects forward and extends in the vertical direction and partitions the cross section of the air passage 42 into two air passages is provided.

さらに、上述した本発明の第１実施形態による排水ソケット１６及び第２実施形態による排水ソケット５０とものと同様に、通気路４２ａ，４２ｂの内側通気路面Ｆ１と対向するエルボ部１０４の内面は、エルボ部１０４内に形成される通気路４２ａ，４２ｂの外側通気路面Ｆ２を形成し、この外側通気路面Ｆ２は、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊからエルボ部１０４内の上方前端部１０４ｄ（図１３の右端部）まで前方側に延びて内側通気路面Ｆ１に対して離間した後、エルボ部１０４内の上方前側端部３４ｅから通気路４２ａ，４２ｂの最も前方側の空気流入口４２ｃ，４２ｆまで下方に延びている。
すなわち、内側通気路面Ｆ１と外側通気路面Ｆ２によって形成される通気路４２ａ，４２ｂは、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊからエルボ部１０４内の上方前端部１０４ｄを経て最も前方側の空気流入口４２ｃ，４２ｆまでの通気路領域において、エルボ部１０４内の上方前端部１０４ｄを含む通気路断面の大きさが空気流出口４２ｉ，４２ｊ及び空気流入口４２ｃ，４２ｆの断面の大きさよりも拡張された通気路拡張部Ｅを備えている。 Further, similarly to the drain socket 16 according to the first embodiment of the present invention and the drain socket 50 according to the second embodiment described above, the inner surface of the elbow portion 104 facing the inner vent path surface F1 of the vent paths 42a, 42b is: Outer air passage surfaces F2 of the air passages 42a and 42b formed in the elbow portion 104 are formed, and the outer air passage surface F2 is an upper front end portion in the elbow portion 104 from the air outlets 42i and 42j of the air passages 42a and 42b. After extending forward to 104d (the right end portion in FIG. 13) and being separated from the inner air passage surface F1, the air inlet 42c at the foremost side of the air passages 42a and 42b from the upper front end portion 34e in the elbow portion 104. , 42f.
That is, the air passages 42a and 42b formed by the inner air passage surface F1 and the outer air passage surface F2 are located on the most front side from the air outlets 42i and 42j of the air passages 42a and 42b through the upper front end portion 104d in the elbow portion 104. In the ventilation path area to the air inlets 42c and 42f, the size of the cross section of the ventilation path including the upper front end 104d in the elbow part 104 is larger than the size of the cross sections of the air outlets 42i and 42j and the air inlets 42c and 42f. An expanded ventilation path E is provided.

上述した本発明の一実施形態による排水管部材１００によれば、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊの断面形状が扁平形状であるため、この扁平断面形状の空気流出口４２ｉ，４２ｊの断面積と同一断面積で且つこの断面形状が円形である場合の空気流出口に比べて、万一排水中の汚物や浮遊物が空気流出口に付着して詰まりかけたとしても、空気流出口４２ｉ，４２ｊの扁平断面全体が汚物で完全に塞がれにくくすることができる。したがって、屈曲管路部材１０８によって形成される屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流外周側の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、空気流出口４２ｉ，４２ｊから屈曲管路１１０ｂの上流側に流出させることができ、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   According to the drain pipe member 100 according to the embodiment of the present invention described above, the cross-sectional shape of the air outlets 42i and 42j of the air passages 42a and 42b formed by the bent pipe member 108 is a flat shape. Compared with the air outlet having the same cross-sectional area as that of the air outlets 42i and 42j having a cross-sectional shape and a circular cross-sectional shape, filth and floating matter in the drainage should adhere to the air outlet. Even if clogging occurs, the entire flat cross section of the air outlets 42i and 42j can be prevented from being completely blocked by dirt. Therefore, when a negative pressure is generated in the bent pipe line 110b formed by the bent pipe line member 108 so as to draw the upstream drainage downstream, the air on the downstream outer peripheral side of the bent pipe line 110b is supplied to each air flow. The inlets 42c, 42d, 42e, 42f, 42g, and 42h can be flown into the ventilation paths 42a and 42b, and can be discharged from the air outlets 42i and 42j to the upstream side of the bent pipe line 110b. Negative pressure can be reliably suppressed.

また、本実施形態による排水管部材１００によれば、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊの断面積が通気路通気路４２ａ，４２ｂの流路断面のうちで最小となっているため、万一排水中の汚物が空気流出口４２ｉ，４２ｊから通気路４２ａ，４２ｂ内に入り込んでしまったとしても、空気流出口４２ｉ，４２ｊよりも流路断面の断面積が大きい通気路４２ａ，４２ｂ内に汚物が流されるため、汚物を通気路内で詰まりにくくすることができる。したがって、屈曲管路部材１０８によって形成される屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流外周側の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、空気流出口４２ｉ，４２ｊから屈曲管路１１０ｂの上流側に流出させることができ、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   Further, according to the drainage pipe member 100 according to the present embodiment, the cross-sectional area of the air outlets 42i and 42j of the ventilation paths 42a and 42b formed by the bent pipe member 108 is the flow path cross section of the ventilation path ventilation paths 42a and 42b. Therefore, even if filth in the wastewater enters the air passages 42a and 42b from the air outlets 42i and 42j, the cross section of the flow path is larger than that of the air outlets 42i and 42j. Since filth is caused to flow in the air passages 42a and 42b having a large cross-sectional area, the filth can be hardly clogged in the air passage. Therefore, when a negative pressure is generated in the bent pipe line 110b formed by the bent pipe line member 108 so as to draw the upstream drainage downstream, the air on the downstream outer peripheral side of the bent pipe line 110b is supplied to each air flow. The inlets 42c, 42d, 42e, 42f, 42g, and 42h can be flown into the ventilation paths 42a and 42b, and can be discharged from the air outlets 42i and 42j to the upstream side of the bent pipe line 110b. Negative pressure can be reliably suppressed.

さらに、本実施形態による排水管部材１００によれば、屈曲管路部材１０８によって形成される通気路４２ａ，４２ｂの合流空気流出口４２ｋの開口断面Ｓ５と下流側管路４０ｃの入口部における流路断面Ｓ４とは、互いに上下方向に対向するように、互いがほぼ平行に配置されており、合流空気流出口４２ｋの開口断面Ｓ５は、上流側管路１１０ａ内の上方に配置されている。したがって、上流側管路１１０ａ内の排水に含まれる汚物は屈曲管路１１０ｂを経て下方の下流側管路１１０ｃへ確実に排出されるため、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋには汚物を詰まりにくくすることができる。この結果、屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流側にある下流側管路１１０ｃ内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路１１０ａに流出させて、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   Furthermore, according to the drainage pipe member 100 according to the present embodiment, the flow path at the opening cross section S5 of the merging air outlet 42k of the ventilation paths 42a and 42b formed by the bent pipe member 108 and the inlet of the downstream side pipe 40c. The cross section S4 is arranged substantially parallel to each other so as to face each other in the vertical direction, and the opening cross section S5 of the merging air outlet 42k is arranged above the upstream side pipe line 110a. Therefore, the filth contained in the waste water in the upstream pipe 110a is surely discharged to the downstream downstream pipe 110c via the bent pipe 110b, so that the air outlets 42i and 42j of the ventilation paths 42a and 42b The air outlet 42k can be made less clogged with filth. As a result, when a negative pressure is generated to draw the upstream drainage downstream in the bent pipe 110b, the air in the downstream pipe 110c on the downstream side of the bent pipe 110b is transferred to each air inlet. 42c, 42d, 42e, 42f, 42g, 42h are allowed to flow into the air passages 42a, 42b, and are allowed to flow out from the air outlets 42i, 42j of the air passages 42a, 42b and the combined air outlet 42k to the upstream pipe 110a. In addition, the negative pressure in the bent duct 110b can be reliably suppressed.

また、本実施形態による排水管部材１００によれば、エルボ部１０４の上部１０４ｃにおいて、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊから所定距離の上流側の位置には、汚物が侵入することを防止する汚物侵入防止手段である突出部１１２が形成されている。したがって、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋにおける汚物を詰まりにくくすることができ、屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流側にある下流側管路１１０ｃ内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路１１０ａに流出させて、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   Further, according to the drainage pipe member 100 according to the present embodiment, in the upper part 104c of the elbow part 104, filth enters the upstream position at a predetermined distance from the air outlets 42i, 42j of the ventilation paths 42a, 42b. The protrusion 112 which is a filth invasion prevention means for preventing the above is formed. Therefore, it is possible to prevent clogging of filth at the air outlets 42i and 42j and the combined air outlets 42k of the air passages 42a and 42b, and a negative pressure is generated to draw the upstream drainage downstream in the bent pipe 110b. When this occurs, the air in the downstream duct 110c downstream of the bent duct 110b is caused to flow from the air inlets 42c, 42d, 42e, 42f, 42g, and 42h into the vents 42a and 42b. The negative pressure in the bent pipe 110b can be reliably suppressed by flowing out from the air outlets 42i and 42j and the merged air outlet 42k of the paths 42a and 42b to the upstream pipe 110a.

さらに、本実施形態による排水管部材１００によれば、屈曲管路部材１０８の屈曲管路／通気路形成部３６ｂの外側表面は、通気路４２ａ，４２ｂ内において屈曲管路１１０ｂ側に形成される内側通気路面Ｆ１を形成し、これら通気路４２ａ，４２ｂの内側通気路面Ｆ１は、通気路４２ａ，４２ｂの上方に位置する左側通気路４２ａの空気流出口４２ｉ及び右側通気路４２ｂの空気流出口４２ｊからこれらの空気流出口４２ｉ，４２ｊよりも下方に対応して位置する左側通気路４２ａの前方側空気流入口４２ｃ，４２ｄ及び右側通気路４２ｂの前方側空気流入口４２ｆ，４２ｇに向かって下方且つ前側に張り出した曲がり面を形成している。したがって、万一上流側管路１１０ａ内の排水中の汚物が空気流出口４２ｉ，４２ｊの少なくとも一方から通気路４２ａ，４２ｂ内の少なくとも一方に入り込んでしまったとしても、通気路４２ａ，４２ｂ内の汚物が内側通気路面Ｆ１に沿って通気路４２ａ，４２ｂの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈに導かれ、これらの各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから下流側管路１１０ｃ内に向けて排出されるため、通気路４２ａ，４２ｂ内に汚物が詰まることを防ぐことができる。この結果、屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流側にある下流側管路１１０ｃ内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路１１０ａに流出させて、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   Furthermore, according to the drain pipe member 100 according to the present embodiment, the outer surface of the bent pipe / ventilation path forming portion 36b of the bent pipe member 108 is formed on the bent pipe 110b side in the vent paths 42a and 42b. An inner ventilation path surface F1 is formed, and the inner ventilation path surfaces F1 of these ventilation paths 42a and 42b are the air outlet 42i of the left ventilation path 42a and the air outlet 42j of the right ventilation path 42b located above the ventilation paths 42a and 42b. To the front side air inlets 42c, 42d of the left side air passage 42a and the front side air inlets 42f, 42g of the right side air passage 42b, which are located below the air outlets 42i, 42j. A curved surface protruding to the front side is formed. Therefore, even if filth in the drainage in the upstream pipeline 110a enters at least one of the air passages 42a and 42b from at least one of the air outlets 42i and 42j, the waste in the air passages 42a and 42b. The filth is led to the air inlets 42c, 42d, 42e, 42f, 42g, 42h of the air passages 42a, 42b along the inner air passage surface F1, and these air inlets 42c, 42d, 42e, 42f, 42g, Since 42h is discharged toward the downstream side pipe line 110c, it is possible to prevent filth from being clogged in the ventilation paths 42a and 42b. As a result, when a negative pressure is generated to draw the upstream drainage downstream in the bent pipe 110b, the air in the downstream pipe 110c on the downstream side of the bent pipe 110b is transferred to each air inlet. 42c, 42d, 42e, 42f, 42g, 42h are allowed to flow into the air passages 42a, 42b, and are allowed to flow out from the air outlets 42i, 42j of the air passages 42a, 42b and the combined air outlet 42k to the upstream pipe 110a. In addition, the negative pressure in the bent duct 110b can be reliably suppressed.

また、本実施形態による排水管部材１００によれば、屈曲管路部材１０８には、屈曲管路／通気路形成部３６ｂの外面に沿って前方側に突出して上下方向に延び、通気路４２の流路断面を２つの通気路に区画する通気路区画壁部３６ｃが設けられている。したがって、屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流側にある下流側管路１１０ｃ内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路１１０ａに流出させて、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   Further, according to the drainage pipe member 100 according to the present embodiment, the bent pipe member 108 protrudes forward along the outer surface of the bent pipe / ventilation path forming portion 36b and extends in the vertical direction. An air passage partition wall portion 36c that partitions the channel cross section into two air passages is provided. Therefore, when a negative pressure is generated in the bent pipeline 110b to draw the upstream drainage downstream, the air in the downstream pipeline 110c on the downstream side of the bent pipeline 110b is transferred to each air inlet 42c. , 42d, 42e, 42f, 42g, and 42h into the air passages 42a and 42b, and out of the air outlets 42i and 42j and the merging air outlet 42k to the upstream pipe 110a, Negative pressure can be reliably suppressed.

さらに、本実施形態による排水管部材１００によれば、通気路４２ａ，４２ｂの内側通気路面Ｆ１と対向するエルボ部１０４の内面は、エルボ部１０４内に形成される通気路４２ａ，４２ｂの外側通気路面Ｆ２を形成し、この外側通気路面Ｆ２は、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊからエルボ部１０４内の上方前端部１０４ｄ（図１３の右端部）まで前方側に延びて内側通気路面Ｆ１に対して離間した後、エルボ部１０４内の上方前側端部３４ｅから通気路４２ａ，４２ｂの最も前方側の空気流入口４２ｃ，４２ｆまで下方に延びている。すなわち、内側通気路面Ｆ１と外側通気路面Ｆ２によって形成される通気路４２ａ，４２ｂは、通気路４２ａ，４２ｂの空気流出口４２ｉ，４２ｊからエルボ部１０４内の上方前端部１０４ｄを経て最も前方側の空気流入口４２ｃ，４２ｆまでの通気路領域において、エルボ部１０４内の上方前端部１０４ｄを含む通気路断面の大きさが空気流出口４２ｉ，４２ｊ及び空気流入口４２ｃ，４２ｆの断面の大きさよりも拡張された通気路拡張部Ｅを備えている。したがって、万一上流側管路１１０ａ内の排水中の汚物が空気流出口４２ｉ，４２ｊの少なくとも一方から通気路４２ａ，４２ｂ内の少なくとも一方に入り込んでしまったとしても、通気路拡張部Ｅによって通気路４２ａ，４２ｂの断面の大きさが空気流出口４２ｉ，４２ｊ及び最も前方側の空気流入口４２ｃ，４２ｆの断面の大きさよりも拡張されて通気路４２ｉ，４２ｊ内の容積が比較的広くなっているため、通気路４２ｉ，４２ｊ内に汚物を蓄積しにくくすることができる。したがって、屈曲管路１１０ｂ内において上流側の排水を下流側に引き込もうとする負圧が発生した際に、屈曲管路１１０ｂの下流側にある下流側管路１１０ｃ内の空気を各空気流入口４２ｃ，４２ｄ，４２ｅ，４２ｆ，４２ｇ，４２ｈから通気路４２ａ，４２ｂ内に流入させ、空気流出口４２ｉ，４２ｊ及び合流空気流出口４２ｋから上流側管路１１０ａに流出させて、屈曲管路１１０ｂ内の負圧を確実に抑制することができる。   Furthermore, according to the drainage pipe member 100 according to the present embodiment, the inner surface of the elbow part 104 facing the inner ventilation path surface F1 of the ventilation paths 42a and 42b is outside the ventilation paths 42a and 42b formed in the elbow part 104. A road surface F2 is formed, and the outer air passage surface F2 extends forward from the air outlets 42i and 42j of the air passages 42a and 42b to the upper front end portion 104d (the right end portion in FIG. 13) in the elbow portion 104. After being separated from the road surface F1, it extends downward from the upper front end 34e in the elbow part 104 to the front air inlets 42c and 42f of the vent paths 42a and 42b. That is, the air passages 42a and 42b formed by the inner air passage surface F1 and the outer air passage surface F2 are located on the most front side from the air outlets 42i and 42j of the air passages 42a and 42b through the upper front end portion 104d in the elbow portion 104. In the ventilation path area to the air inlets 42c and 42f, the size of the cross section of the ventilation path including the upper front end 104d in the elbow part 104 is larger than the size of the cross sections of the air outlets 42i and 42j and the air inlets 42c and 42f. An expanded ventilation path E is provided. Therefore, even if filth in the waste water in the upstream pipe 110a enters at least one of the air passages 42a and 42b from at least one of the air outlets 42i and 42j, the air passage is expanded by the air passage extension E. The cross-sectional sizes of the passages 42a and 42b are expanded more than the cross-sectional sizes of the air outlets 42i and 42j and the foremost air inlets 42c and 42f, so that the volumes in the air passages 42i and 42j become relatively wide. Therefore, it is possible to make it difficult to accumulate filth in the ventilation paths 42i and 42j. Therefore, when a negative pressure is generated in the bent pipeline 110b to draw the upstream drainage downstream, the air in the downstream pipeline 110c on the downstream side of the bent pipeline 110b is transferred to each air inlet 42c. , 42d, 42e, 42f, 42g, and 42h into the air passages 42a and 42b, and out of the air outlets 42i and 42j and the merging air outlet 42k to the upstream pipe 110a, Negative pressure can be reliably suppressed.

なお、上述した本発明の一実施形態による排水管部材１００においては、一例として、エルボ部１０４と屈曲管路部材１０８が別部材である形態について説明したが、このような形態に限定されず、エルボ部１０４及び屈曲管路部材１０８を一体的に形成された一部材とし、エルボ部１０４の内部に形成される排水管路及び通気路を一つの部材で形成するようにしてもよい。   In addition, in the drain pipe member 100 by one Embodiment of this invention mentioned above, although the elbow part 104 and the bending pipe line member 108 were demonstrated as an example as an example, it is not limited to such a form, The elbow part 104 and the bent pipe member 108 may be formed as a single member, and the drain pipe and the ventilation path formed inside the elbow part 104 may be formed by one member.

なお、上述した本発明の一実施形態による排水管部材１００においては、一例として、通気路４２が屈曲管路部材１０８の屈曲管路１１０ｂの外周側に形成された形態について説明したが、このような形態に限定されず、通気路については、屈曲管路部材１０８の屈曲管路１１０ｂの内周側に形成された形態にしてもよい。   In the above-described drain pipe member 100 according to the embodiment of the present invention, the form in which the air passage 42 is formed on the outer peripheral side of the bent pipe line 110b of the bent pipe member 108 has been described as an example. However, the air passage may be formed on the inner peripheral side of the bent duct 110b of the bent duct member 108.

１ 洗い落し式便器（水洗大便器）
２ 便器本体
４ ボウル部
６ 導水路
８ 排水トラップ管路（水洗大便器の便器本体の排水路）
８ａ 排水トラップ管路の入口
８ｂ 排水トラップ管路の上昇路
８ｃ 排水トラップ管路の下降路
８ｄ 排水トラップ管路の出口
１０ リム
１２ 第１吐水口
１４ 溜水部
１６ 排水ソケット
１８ 床下排水管
１８ａ 床下排水管の入口部
１８ｂ 床下排水管の管路
２０ 第２吐水口
２２ 洗浄水タンク装置
２４ 洗浄水タンク
２４ａ 洗浄水タンクの排水口
２６ 便器本体側接続管部材
２８ 床下側接続管部材
３０ 便器本体側接続管部材の便器本体側接続管本体
３０ａ 便器本体側接続管本体の入口部
３０ｂ 便器本体側接続管本体の屈曲管路
３０ｃ 便器本体側接続管本体の突出管路
３０ｄ 便器本体側接続管本体の突出管路の基端
３０ｅ 便器本体側接続管本体の突出管路の先端
３２ 便器本体側接続管部材の管路延長用連結管
３２ａ 管路延長用連結管の入口部
３２ｂ 管路延長用連結管の管路
３２ｃ 管路延長用連結管の出口部
３４ 床下側接続管部材の外側ケーシング部材
３４ａ 外側ケーシング部材の入口部
３４ｂ 外側ケーシング部材の凹部
３４ｃ 外側ケーシング部材の下端開口部
３４ｄ 外側ケーシング部材の上部
３４ｅ 外側ケーシング部材の上方前端部
３４ｆ 外側ケーシング部材の突出部（汚物侵入防止手段）
３６ 床下側接続管部材の屈曲管路部材
３６ａ 屈曲管路部材の下端部
３６ｂ 屈曲管路部材の屈曲管路／通気路形成部
３６ｃ 屈曲管路部材の通気路区画壁部
３６ｄ 屈曲管路部材の円環状接続部
３６ｅ 屈曲管路部材の下流側管路形成部
３６ｆ 屈曲管路部材の屈曲管路／通気路形成部の外周面
３６ｇ 屈曲管路部材の円環状接続部の内周面
３６ｈ 空気流入口区画部
３６ｉ 屈曲管路部材の屈曲管路／通気路形成部の上部
３６ｊ 屈曲管路の後方側内壁面
３８ 床下側接続管部材のベース部材
３８ａ 床下側接続管部材のベース部材の管路
３８ｂ 床下側接続管部材のベース部材の管部
３８ｃ 床下側接続管部材のベース部材の締結部材
４０ 床下側接続管部材の排水管路
４０ａ 床下側接続管部材の上流側管路
４０ｂ 床下側接続管部材の屈曲管路
４０ｃ 床下側接続管部材の下流側管路
４２ 床下側接続管部材の通気路（負圧抑制手段）
４２ａ 床下側接続管部材の左側通気路
４２ｂ 床下側接続管部材の右側通気路
４２ｃ，４２ｄ 床下側接続管部材の左側通気路の前方側空気流入口
４２ｅ 床下側接続管部材の左側通気路の後方側空気流入口
４２ｆ，４２ｇ 床下側接続管部材の右側通気路の前方側空気流入口
４２ｈ 床下側接続管部材の右側通気路の後方側空気流入口
４２ｉ 床下側接続管部材の左側通気路の空気流出口
４２ｊ 床下側接続管部材の右側通気路の空気流出口
４２ｋ 床下側接続管部材の通気路の合流空気流出口
５０ 排水ソケット
１００ 排水管部材
１０２ 横管部
１０２ａ 横管部の管路
１０４ エルボ部
１０４ａ エルボ部の上流側端部
１０４ｂ エルボ部の下流側端部
１０４ｃ エルボ部の上部
１０４ｄ エルボ部の前端部
１０６ 縦管部
１０８ 屈曲管路部材
１１０ａ 上流側管路
１１０ｂ 屈曲管路
１１０ｃ 下流側管路
１１２ 突出部（汚物侵入防止手段）
Ｅ 通気路拡張部
Ｆ１ 内側通気路面
Ｆ２ 外側通気路面 1 Washable toilet (flush toilet)
2 Toilet body 4 Bowl part 6 Water conduit 8 Drain trap pipe (drainage channel of toilet body of flush toilet)
8a Drain trap pipe entrance 8b Drain trap pipe rise path 8c Drain trap pipe descent path 8d Drain trap pipe exit 10 Rim 12 First outlet 14 Reservoir 16 Drain socket 18 Under floor drain pipe 18a Under floor Drain pipe inlet 18b Underfloor drain pipe 20 Second water outlet 22 Wash water tank device 24 Wash water tank 24a Wash water tank drain 26 Toilet body side connection pipe member 28 Under floor connection pipe member 30 Toilet body side Connection pipe member toilet body side connection pipe body 30a Toilet body side connection pipe body entrance 30b Toilet body side connection pipe body bent pipe 30c Toilet body side connection pipe body protruding pipe 30d Toilet body side connection pipe body Protrusion pipe proximal end 30e Protrusion pipe distal end of toilet body side connection pipe body 32 Pipe extension extension pipe 32a toilet body side connection pipe member 32a Pipe extension connection Pipe inlet 32b Pipe extension connecting pipe 32c Pipe extension outlet 34 Outer casing member 34a Underside connecting pipe member 34a Outer casing member inlet 34b Outer casing member recess 34c Outer casing Lower end opening part 34d Upper part of outer casing member 34e Upper front end part of outer casing member 34f Protruding part of outer casing member (filth intrusion prevention means)
36 Bending pipe member of underfloor side connecting pipe member 36a Lower end portion of bending pipe member 36b Bending pipe passage / venting passage forming portion of bending pipe member 36c Air passage partition wall portion 36d of bending pipe member 36d of bending pipe member Annular connecting part 36e Downstream pipe forming part 36b of the bent pipe member 36f Outer peripheral surface 36b of the bent pipe member / inner pipe forming part 36h Inner peripheral surface 36h of the bent pipe member Inlet section 36i Upper part of bent pipe / ventilation path forming part of bent pipe member 36j Inner wall surface at the rear side of bent pipe 38 Base member of underfloor side connecting pipe member 38a Pipe line of base member of underfloor side connecting pipe member 38b Base part of the base member of the underfloor connection pipe member 38c Fastening member of the base member of the underfloor connection pipe member 40 Drain pipe 40a of the underfloor connection pipe member 40a Upstream pipe 40b of the underfloor connection pipe member Underfloor connection pipe member Flex tube Air passage of the downstream side conduit 42 under the floor-side connecting pipe member 40c underfloor side connection pipe member (negative pressure suppression means)
42a Left air passage of the underfloor connection pipe member 42b Right air passage of the underfloor connection pipe member 42c, 42d Front air inlet of the left air passage of the underfloor connection pipe member 42e Rear of the left air passage of the underfloor connection pipe member Side air inlet 42f, 42g Front side air inlet 42h of the right side air passage of the underfloor connecting pipe member 42h Rear side air inlet 42i of the right side air passage of the under floor connecting pipe member 42i Air of the left side air passage of the under floor connecting pipe member Outlet 42j Air outlet of right side air passage of underfloor side connecting pipe member 42k Combined air outlet of air path of underfloor side connecting pipe member 50 Drain socket 100 Drain pipe member 102 Horizontal pipe portion 102a Horizontal pipe portion pipe 104 Elbow Portion 104a Elbow portion upstream end portion 104b Elbow portion downstream end portion 104c Elbow portion upper portion 104d Elbow portion front end portion 106 Vertical pipe portion 108 Bent pipe member 110a Upstream side pipe 110b Bent pipe 110c Downstream side 112 Projection (filth intrusion prevention means)
E Ventilation channel extension F1 Inner ventilation channel surface F2 Outer ventilation channel surface

Claims (6)

水洗大便器の便器本体の排水路の出口部と便器本体内の下方領域の床に設けられた床下排水管の入口部とを連結する排水ソケットであって、
上記便器本体の排水路の出口部と床下排水管の入口部とを接続する接続管部材を有し、 上記接続管部材には、屈曲管路が形成されると共に、この屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に上記屈曲管路の下流側の空気を上記屈曲管路の上流側に流出させる屈曲した通気路が形成され、この通気路の空気流出口の断面積は、上記通気路の流路断面のうちで最小であることを特徴とする排水ソケット。 A drainage socket that connects the outlet of the drainage channel of the toilet body of the flush toilet and the inlet of an underfloor drainage pipe provided on the floor in the lower region of the toilet body ,
A connecting pipe member that connects an outlet part of the drainage channel of the toilet body and an inlet part of an underfloor drainage pipe. The connecting pipe member is formed with a bent pipe line, and is connected upstream in the bent pipe line. A bent air passage is formed that causes the air downstream of the bent pipe to flow out to the upstream of the bent pipe when a negative pressure is generated to draw the waste water on the side downstream. A drainage socket characterized in that the cross-sectional area of the outlet is the smallest of the cross-sections of the air passage. 上記接続管部材は、外側ケーシング部材と、この外側ケーシング部材の内部に組み込まれて上記屈曲管路及び上記通気路を形成する屈曲管路部材と、を備え、上記通気路を形成する上記屈曲管路部材の外周面は、上記通気路の上方に位置する空気流出口から下方に位置する空気流入口に向かって張り出した曲がり面を形成する請求項１記載の排水ソケット。   The connecting pipe member includes an outer casing member, and a bent pipe member that is incorporated in the outer casing member and forms the bent pipe and the vent path, and the bent pipe that forms the vent path. 2. The drain socket according to claim 1, wherein the outer peripheral surface of the path member forms a curved surface projecting from an air outlet located above the air passage toward an air inlet located below. 上記接続管部材の屈曲管路部材は、上記通気路の空気流出口及びこの空気流出口よりも上流側の通気路の流路断面を複数に区画する区画壁を備えている請求項１又は２に記載の排水ソケット。   The bent pipe member of the connecting pipe member includes a partition wall that divides the air flow outlet of the air passage and a flow passage section of the air passage upstream of the air outlet into a plurality of sections. Drainage socket as described in. 上記接続管部材の外側ケーシング部材は、上記通気路の断面の大きさを上記空気流出口及び上記空気流入口の断面の大きさよりも拡張させる通気路拡張部を備えている請求項２記載の排水ソケット。   3. The drainage according to claim 2, wherein the outer casing member of the connection pipe member is provided with a vent passage extending portion that expands a cross-sectional size of the vent passage more than a cross-sectional size of the air outlet and the air inlet. socket. 請求項１乃至４の何れか１項に記載の排水ソケットを備えた水洗大便器。   A flush toilet provided with the drain socket according to any one of claims 1 to 4. 衛生器具から排出された排水の流路をこの流路の方向とは異なる方向に屈曲させる排水管部材であって、
衛生器具の排水路の出口部から流出した排水の流れをこの流れの方向とは異なる方向に屈曲させる屈曲管路を形成する屈曲管路部材を有し、
上記屈曲管路部材は、この屈曲管路内で上流側の排水を下流側に引き込もうとする負圧が発生した際に上記屈曲管路の下流側の空気を上記屈曲管路の上流側に流出させる屈曲した通気路を形成し、この通気路の空気流出口の断面積は、上記通気路の流路断面のうちで最小であることを特徴とする排水管部材。 A drainage pipe member that bends the flow path of drainage discharged from the sanitary appliance in a direction different from the direction of the flow path,
A bent pipe member that forms a bent pipe that bends the flow of drainage flowing out from the outlet of the drainage path of the sanitary appliance in a direction different from the direction of the flow;
The bent pipe member discharges the air downstream of the bent pipe to the upstream side of the bent pipe when a negative pressure is generated to draw the upstream drainage downstream in the bent pipe. A drainage pipe member characterized by forming a bent air passage to be bent, and having a cross-sectional area of an air outlet of the air passage that is the smallest in a cross section of the air passage.
JP2010042506A 2010-02-26 2010-02-26 Drain socket, flush toilet equipped with the same, and drain pipe member Active JP5601451B2 (en)

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JP6765627B2 (en) * 2015-03-20 2020-10-07 Toto株式会社 Drainage socket
JP7336743B2 (en) * 2019-05-23 2023-09-01 パナソニックＩｐマネジメント株式会社 Drainage sockets and their associated drain connections

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JPH08253959A (en) * 1995-01-17 1996-10-01 Noriatsu Kojima Fitting for drain pipe and drainage system using the fitting

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