JP2020180707A

JP2020180707A - Valve body unit, exhaust valve device, device for fixing exhaust valve to lid body, and structure for fixing exhaust valve to lid body

Info

Publication number: JP2020180707A
Application number: JP2020137197A
Authority: JP
Inventors: 翔平松田; Shohei Matsuda
Original assignee: Mirai Industry Co Ltd
Current assignee: Mirai Industry Co Ltd
Priority date: 2020-08-16
Filing date: 2020-08-16
Publication date: 2020-11-05

Abstract

To provide an exhaust valve device which can be installed to a lid body without preparing a special lid body.SOLUTION: An exhaust valve device comprises: a valve body unit 10; and a unit fixing member 30 for fixing the valve body unit 10 to a through hole of a lid body 50 which closes an upper opening of a standing pipe 58 connected to a drain duct line. The unit fixing member 30 includes: an outer covering cylindrical body 31 which is inserted into the through hole and in which the valve body unit 10 may be arranged; an engagement part which protrudes outward from one end of the outer covering cylindrical body 31 and is engaged with a peripheral edge of the through hole of the lid body 50; and a fixed part which is fixed to the through hole of the lid body 50 at an attitude set when the unit fixing member 30 is engaged at the engagement part. The fixed part includes a fixed nut 41 which is threadedly engaged with a screw part 34, formed at the outer covering cylindrical body 31, at the lower surface side of the lid body 50 to sandwich the lid body 50 with the engagement part.SELECTED DRAWING: Figure 5

Description

本発明は、排水設備の排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に設置される弁体ユニット、排気弁装置、蓋体への排気弁固定装置及び蓋体への排気弁固定構造に関するものである。 According to the present invention, a valve body unit, an exhaust valve device, an exhaust valve fixing device to the lid, and an exhaust valve fixing to the lid are installed on a lid that closes an upper opening of a rising pipe connected to a drain pipe of a drainage facility. It is about the structure.

洗面台や台所等の排水設備には、下水からの悪臭が逆流したり害虫が侵入するのを防ぐために排水トラップが設けられている。図１１において、屋外の排水本管６１に通じる排水管路６２の途中には排水マス６３が設けられ、屋内の排水設備６４及び屋外の排水マス６３には排水トラップ６５が設けられている。何らかの原因で排水トラップ６５間の排水管路６２内の圧力が上昇すると排水が流れにくくなるので、排水マス６３の上端部に圧力開放キャップ６６を設けたり、排水管路６１に繋がる立上り管を別途に設けてこの上端部に圧力開放キャップを設けて、排水管路６２内の空気を逃がし圧力が上昇するのを防いでいる。特許文献１及び特許文献２には排水マス６３を含めた立上り管の上端部に設けた蓋体に圧力開放キャップを取り付けて排水管路６２内の空気を外部に開放して圧力の上昇を防ぐ技術が開示されている。 Drainage facilities such as wash basins and kitchens are equipped with drain traps to prevent the backflow of bad odors from sewage and the invasion of pests. In FIG. 11, a drainage mass 63 is provided in the middle of the drainage pipe line 62 leading to the outdoor drainage main 61, and a drainage trap 65 is provided in the indoor drainage facility 64 and the outdoor drainage mass 63. If the pressure in the drainage pipe 62 between the drainage traps 65 rises for some reason, it becomes difficult for the drainage to flow. Therefore, a pressure release cap 66 is provided at the upper end of the drainage mass 63, or a rising pipe connected to the drainage pipe 61 is separately provided. A pressure release cap is provided at the upper end of the drainage pipe line 62 to allow air in the drainage pipe line 62 to escape and prevent the pressure from rising. In Patent Document 1 and Patent Document 2, a pressure release cap is attached to a lid provided at the upper end of the rising pipe including the drainage mass 63 to release the air in the drainage pipe line 62 to the outside to prevent the pressure from rising. The technology is disclosed.

特許文献１の圧力開放キャップである排気弁は、本願発明の図８に示す弁体ユニット１０と同様の構成となっており、本願発明の図８の符号を用いて説明すれば、立上り管５８の上方開口部を塞ぐ蓋体５０の第１貫通孔５２に固定される第１固定部２４と、第１貫通孔５２を介して蓋体５０の表裏を連通する通気路１２と、弁体１４と、覆い部２２とを備えている。弁体１４は、蓋体５０の表側の面である上面５１よりも上方で、通気路１２を閉鎖するとともに排水管路からの増加した圧力を受けて開口動作して通気路１２を開放する。覆い部２２は、蓋体５０の表側において弁体１４の上面側を覆っている。 The exhaust valve, which is the pressure release cap of Patent Document 1, has the same configuration as the valve body unit 10 shown in FIG. 8 of the present invention, and will be described using the reference numerals of FIG. 8 of the present invention. The first fixing portion 24 fixed to the first through hole 52 of the lid 50 that closes the upper opening of the lid 50, the ventilation passage 12 that communicates the front and back surfaces of the lid 50 through the first through hole 52, and the valve body 14 And a cover portion 22. The valve body 14 closes the ventilation passage 12 above the upper surface 51, which is the front surface of the lid 50, and opens the ventilation passage 12 by receiving an increased pressure from the drainage pipe passage. The covering portion 22 covers the upper surface side of the valve body 14 on the front side of the lid body 50.

また、特許文献２に記載の圧力開放蓋は、上下方向に貫通する貫通孔が設けられた蓋体と、貫通孔を閉鎖する下限位置、及び蓋体から浮上して貫通孔を開放する上限位置、の間で上下方向に移動可能な可動開閉蓋と、その移動方向を上下方向に規制する案内部と、を備えている。この圧力開放蓋は、排水管路内の圧力が高くなると、可動開閉蓋の下面に圧力が加えられ、可動開閉蓋は押し上げられる結果、排水管路内の圧力が開放される。 Further, the pressure release lid described in Patent Document 2 has a lid provided with a through hole penetrating in the vertical direction, a lower limit position for closing the through hole, and an upper limit position for floating from the lid and opening the through hole. It is provided with a movable opening / closing lid that can move in the vertical direction between the, and a guide portion that regulates the moving direction in the vertical direction. When the pressure in the drainage pipe becomes high, the pressure release lid applies pressure to the lower surface of the movable opening / closing lid, and as a result of pushing up the movable opening / closing lid, the pressure in the drainage pipe is released.

特開２０１５−１６９２１４号公報JP-A-2015-169214 特開２０１２−１７２３２２号公報Japanese Unexamined Patent Publication No. 2012-172322

しかし、特許文献１に記載の排気弁は、覆い部２２が蓋体５０の上面５１から上方に突出するので、歩行中に覆い部２２につまづいたり、外観的に覆い部２２が蓋体５０から上方に飛び出すのが気になることがあった。 However, in the exhaust valve described in Patent Document 1, since the cover portion 22 projects upward from the upper surface 51 of the lid body 50, the cover portion 22 may trip over the cover portion 22 during walking, or the cover portion 22 may appear as the lid 50. I was worried about jumping up from.

これに対して、特許文献２に記載の圧力開放蓋に取り付けられた圧力開放キャップとしての可動開閉蓋は、最上面が蓋体の上面と同一高さに設置され、蓋体から上方に突出しないので、そのような不具合を生じない。 On the other hand, the movable opening / closing lid as the pressure release cap attached to the pressure release lid described in Patent Document 2 has the uppermost surface installed at the same height as the upper surface of the lid body and does not protrude upward from the lid body. Therefore, such a problem does not occur.

しかし、特許文献２の可動開閉蓋は、逆円錐台形状に形成され、側面は傾斜面に形成されており、これに対応して蓋体に設けられた貫通孔の内周面は、下側ほど開口面積が小さくなるテーパ状の傾斜面に形成されている。このため、既存の蓋体に後付けで可動開閉蓋を取り付けるときに、ドリル等の切削工具を使用して既存の蓋体に内周面がテーパ状に傾斜した貫通孔を設けることはできないから、可動開閉蓋を取り付けるときには、可動開閉蓋と対応する専用の蓋体を用意し、一旦既存の蓋体を取り外してから可動開閉蓋に対応する専用の蓋体に交換した後、この蓋体に可動開閉蓋を取り付ける必要があった。このため、交換する手間が煩わしいとともに、蓋体に無駄が生じ、部品コストが上昇することとなった。 However, the movable opening / closing lid of Patent Document 2 is formed in an inverted truncated cone shape, and the side surface is formed on an inclined surface, and the inner peripheral surface of the through hole provided in the lid corresponding to this is formed on the lower side. It is formed on a tapered inclined surface whose opening area becomes smaller. For this reason, when a movable opening / closing lid is retrofitted to an existing lid, it is not possible to provide a through hole with a tapered inner peripheral surface in the existing lid using a cutting tool such as a drill. When attaching the movable opening / closing lid, prepare a dedicated lid that corresponds to the movable opening / closing lid, remove the existing lid once, replace it with a dedicated lid that corresponds to the movable opening / closing lid, and then move to this lid. It was necessary to attach an open / close lid. For this reason, it is troublesome to replace the lid, waste is generated in the lid, and the cost of parts is increased.

そこで、本発明は、主として既存の蓋体に設置されるものであって、専用の蓋体を用意することなく設置することができる弁体ユニット、排気弁装置、蓋体への排気弁固定装置及び蓋体への排気弁固定構造の提供を課題とするものである。 Therefore, the present invention is mainly installed on an existing lid body, and can be installed without preparing a dedicated lid body, a valve body unit, an exhaust valve device, and an exhaust valve fixing device to the lid body. An object of the present invention is to provide an exhaust valve fixing structure to the lid body.

請求項１の弁体ユニットは、
排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に形成された貫通孔に内挿される、内部に通気路が形成された筒状本体と、
該筒状本体の外面から外方に張り出し、前記蓋体の上面における前記貫通孔の周縁に掛止される掛止部と、
該掛止部により掛止された姿勢で前記蓋体の下面より下方となる位置に設けられ、固定ナットで前記掛止部とともに前記蓋体を挟持すべく前記蓋体の下面側で前記固定ナットが螺着されるネジ部と、
前記通気路を閉鎖するとともに前記排水管路からの増加した圧力を受けて開口動作し該通気路を開放する弁体と、
前記弁体の上面側を覆い、側方に前記通気路を外部に連通させる排気口が設けられた覆い部と、を備えたものである。 The valve body unit according to claim 1 is
A tubular body with a ventilation path inside, which is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that projects outward from the outer surface of the tubular body and is hooked on the peripheral edge of the through hole on the upper surface of the lid body.
The fixing nut is provided at a position below the lower surface of the lid in a posture of being hooked by the hook, and the fixing nut is provided on the lower surface side of the lid so as to sandwich the lid together with the hook with the fixing nut. And the screw part to which is screwed
A valve body that closes the ventilation passage and opens the ventilation passage by receiving an increased pressure from the drainage pipe passage.
It is provided with a covering portion that covers the upper surface side of the valve body and is provided with an exhaust port for communicating the ventilation path to the outside on the side.

請求項２の排気弁装置は、
弁体ユニットと、排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に形成された貫通孔に前記弁体ユニットを固定するためのユニット固定部材と、からなる排気弁装置であって、
前記ユニット固定部材は、
中空筒状に形成され、前記貫通孔に内挿されるとともに前記弁体ユニットを内部に配置可能な外装筒体と、
前記外装筒体の一端から外方に張り出し、前記蓋体の上面における前記貫通孔の周縁に掛止される掛止部と、
該掛止部により掛止された姿勢で前記蓋体の貫通孔に固定される固定部と、を備え、
前記固定部は、前記蓋体の下面側で前記外装筒体に形成されたネジ部に螺着されて前記蓋体を前記掛止部とともに挟持する固定ナットを有するものである。 The exhaust valve device of claim 2 is
An exhaust valve device comprising a valve body unit and a unit fixing member for fixing the valve body unit to a through hole formed in a lid body that closes an upper opening of a rising pipe connected to a drainage pipe.
The unit fixing member is
An exterior tubular body that is formed in a hollow tubular shape, is inserted into the through hole, and the valve body unit can be arranged inside.
A hooking portion that projects outward from one end of the outer cylinder and is hooked on the peripheral edge of the through hole on the upper surface of the lid.
A fixing portion fixed to the through hole of the lid body in a posture of being hooked by the hooking portion is provided.
The fixing portion has a fixing nut that is screwed to a screw portion formed on the outer cylinder on the lower surface side of the lid and holds the lid together with the hooking portion.

請求項３の蓋体への排気弁固定装置は、
排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に形成された貫通孔に内挿される筒状本体と、
前記蓋体の上面における前記貫通孔の周縁に掛止される掛止部と、
前記筒状本体の内部に形成された通気路を閉鎖するとともに前記排水管路からの増加した圧力を受けて開口動作する弁体と、
前記蓋体の下面側で、前記筒状本体設けられたネジ部に螺着され、前記掛止部とともに前記蓋体を挟持する固定ナットと、
を備えたものである。 The exhaust valve fixing device to the lid of claim 3 is
A tubular body that is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that is hooked on the peripheral edge of the through hole on the upper surface of the lid body,
A valve body that closes the air passage formed inside the tubular body and opens in response to an increased pressure from the drainage pipe.
On the lower surface side of the lid, a fixing nut that is screwed to a screw portion provided on the tubular body and holds the lid together with the hooking portion.
It is equipped with.

請求項４の蓋体への排気弁固定装置は、
蓋体に形成された貫通孔に内挿される筒部と、該筒部の内部に配置された弁体と、前記筒部の一端から張り出して前記蓋体の表面側に掛止される掛止部と、前記筒部の他端側の外面に形成されたネジ部と、前記蓋体の裏面側で前記ネジ部に螺着され前記掛止部とともに該蓋体を挟持する固定ナットと、前記掛止部と前記蓋体との間に介挿されたパッキングと、
を備えたものである。 The exhaust valve fixing device to the lid of claim 4 is
A tubular portion inserted into a through hole formed in the lid, a valve body arranged inside the tubular portion, and a hook protruding from one end of the tubular portion and hooked on the surface side of the lid. A portion, a screw portion formed on the outer surface of the other end side of the cylinder portion, a fixing nut screwed to the screw portion on the back surface side of the lid body and sandwiching the lid body together with the hook portion, and the above. The packing inserted between the hook and the lid,
It is equipped with.

請求項５の蓋体への排気弁固定構造は、蓋体の貫通孔の周縁を挟持して請求項３または請求項４に記載の排気弁固定装置が固定されており、前記固定ナットを螺回動により取り外すことで前記蓋体から取り外し可能なものである。 In the structure for fixing the exhaust valve to the lid of claim 5, the exhaust valve fixing device according to claim 3 or 4 is fixed by sandwiching the peripheral edge of the through hole of the lid, and the fixing nut is screwed. It can be removed from the lid by removing it by rotation.

請求項６の蓋体への排気弁固定構造は、
蓋体に形成された貫通孔に筒部材が内挿されてその内部に通気路が形成され、開閉動作し前記通気路を閉鎖及び開放する弁体が前記筒部材内に配置され、前記筒部材の一端から張り出し形成された掛止部が前記蓋体の表面側の前記貫通孔の周縁に掛止され、前記筒部材の他端側が前記蓋体の裏面から突出し、
該筒部材の突出箇所の外面にネジ部が形成され、
前記ネジ部には、固定ナットが螺着されており、
前記掛止部と前記蓋体の表面との間にパッキングが設けられ、
前記掛止部と前記固定ナットとにより、前記蓋体及び前記パッキングが挟持され、
前記筒部材は、前記固定ナットを螺回動により取り外すことで前記蓋体に取り外し可能に固定されたものである。 The structure for fixing the exhaust valve to the lid according to claim 6 is
A tubular member is inserted into a through hole formed in the lid to form a ventilation path inside, and a valve body that opens and closes to close and open the ventilation path is arranged in the tubular member. A hooking portion formed by projecting from one end of the lid is hooked on the peripheral edge of the through hole on the front surface side of the lid, and the other end of the tubular member projects from the back surface of the lid.
A threaded portion is formed on the outer surface of the protruding portion of the tubular member.
A fixing nut is screwed to the threaded portion.
Packing is provided between the hook and the surface of the lid.
The lid and the packing are sandwiched between the hook and the fixing nut.
The tubular member is removably fixed to the lid body by removing the fixing nut by screw rotation.

本発明によれば、ドリル等の切削工具を使用して既存の蓋体に貫通孔を形成し、これに排気弁装置及び弁体設置装置を設置することができるので、排気弁装置等を設置する都度、これに対応する専用の蓋体を別途用意する必要がなく、蓋体交換の手間を省き、蓋体の無駄を省いて部品コストを低減できる。 According to the present invention, a through hole can be formed in an existing lid body by using a cutting tool such as a drill, and an exhaust valve device and a valve body installation device can be installed in the through hole. It is not necessary to separately prepare a dedicated lid body corresponding to this each time, the trouble of replacing the lid body can be saved, the waste of the lid body can be eliminated, and the component cost can be reduced.

また、排気弁装置を既存の蓋体の貫通孔に固定した後に、弁体の掃除などの必要時に、固定ナットを取り外して排気弁装置を蓋体から取り外すことができるから、掛止部と蓋体とが接着固定の場合には、弁体を掃除するときに排気弁装置を蓋体ごと取り外し、蓋体ごと把持して弁体を掃除したり交換する作業を行なう必要があり大変であったが、本発明によれば、そのような手間を省くことができるし、弁体等を交換する際も、排気弁装置を取り外した蓋体は、そのまま再利用できる。 In addition, after fixing the exhaust valve device to the through hole of the existing lid body, the fixing nut can be removed and the exhaust valve device can be removed from the lid body when the valve body needs to be cleaned. When the valve body was fixed by adhesion, it was necessary to remove the exhaust valve device together with the lid when cleaning the valve body, grasp the lid together, and clean or replace the valve body. However, according to the present invention, such trouble can be saved, and the lid body from which the exhaust valve device has been removed can be reused as it is even when the valve body or the like is replaced.

本発明の第一実施形態の排気弁装置を示す分解斜視図である。It is an exploded perspective view which shows the exhaust valve device of 1st Embodiment of this invention. 図１の弁体ユニットの部材を示す斜視図である。It is a perspective view which shows the member of the valve body unit of FIG. 図１の外装筒体を示し、(a)は斜視図、(b)は正面図、(c)は(b)のＡ−Ａ切断線による断面図である。The exterior cylinder of FIG. 1 is shown, (a) is a perspective view, (b) is a front view, and (c) is a cross-sectional view taken along the line AA of (b). 図１の固定ナットを示し、(a)は斜視図、(b)は正面図、(c)は(b)のＢ−Ｂ切断線による断面図である。The fixing nut of FIG. 1 is shown, (a) is a perspective view, (b) is a front view, and (c) is a cross-sectional view taken along the line BB of (b). 本発明の第一実施形態の排気弁装置の断面図である。It is sectional drawing of the exhaust valve device of 1st Embodiment of this invention. 図５の弁体が開口動作したときの空気の流れを示す断面図である。It is sectional drawing which shows the flow of the air when the valve body of FIG. 5 opens. 図１の弁体ユニットを示す分解斜視図である。It is an exploded perspective view which shows the valve body unit of FIG. 図７の弁体ユニットの断面図である。It is sectional drawing of the valve body unit of FIG. 本発明の第二実施形態の排気弁装置を示す断面図である。It is sectional drawing which shows the exhaust valve device of the 2nd Embodiment of this invention. 第一実施形態の排気弁装置の変形例を示す断面図である。It is sectional drawing which shows the modification of the exhaust valve device of 1st Embodiment. 本発明の排気弁装置が設置される排水管路を示す概略図である。It is the schematic which shows the drainage pipe line where the exhaust valve device of this invention is installed.

〈第一実施形態〉
まず、本発明の第一実施形態の排気弁装置及び弁体設置装置を図１乃至図８に基づいて説明する。なお、以下の説明では、排気弁装置を構成する弁体ユニットの覆い部が形成されている側を上側として説明する。 <First Embodiment>
First, the exhaust valve device and the valve body installation device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. In the following description, the side on which the covering portion of the valve body unit constituting the exhaust valve device is formed will be described as the upper side.

排気弁装置は、屋内の洗面台や台所等の排水設備から屋外の排水本管に通じる排水管路内の圧力が上昇したときに排水管路内の空気を外部に逃がして圧力の上昇を防ぐものであり、排水管路に繋げて設けられた立上り管の上方開口部を塞ぐ蓋体に設置されるものである。排気弁装置は、立上り管の上方開口部の蓋体に形成された第１貫通孔に固定される弁体ユニットと、蓋体に形成された第１貫通孔より大径の第２貫通孔に弁体ユニットを固定するためのユニット固定部材と、で構成されている。 The exhaust valve device releases the air in the drainage pipe to the outside when the pressure in the drainage pipe leading to the outdoor drainage main from the drainage facility such as an indoor washbasin or kitchen rises to prevent the pressure from rising. It is installed on a lid that closes the upper opening of a rising pipe that is connected to a drainage pipe. The exhaust valve device consists of a valve body unit fixed to the first through hole formed in the lid of the upper opening of the rising pipe and a second through hole having a diameter larger than the first through hole formed in the lid. It is composed of a unit fixing member for fixing the valve body unit.

図１、図７及び図８において、弁体ユニット１０は、内部に通気路１２が形成され、蓋体５０の第１貫通孔５２に挿入される筒状本体１１と、蓋体５０の上面５１における第１貫通孔５２の周縁５２ａに掛止される第１掛止部２５と、蓋体５０の第１貫通孔５２に固定される第１固定部２４と、筒状本体１１内の通気路１２を閉鎖するとともに排水管路からの増加した圧力を受けて開口動作し通気路１２を開閉する弁体１４と、弁体１４の上面側を覆う覆い部２２と、を備えている。 In FIGS. 1, 7 and 8, the valve body unit 10 has a tubular main body 11 having a ventilation passage 12 formed therein and inserted into the first through hole 52 of the lid body 50, and an upper surface 51 of the lid body 50. The first hooking portion 25 to be hooked on the peripheral edge 52a of the first through hole 52, the first fixing portion 24 to be fixed to the first through hole 52 of the lid 50, and the ventilation path in the tubular main body 11. A valve body 14 that closes the valve body 12 and opens and closes the ventilation path 12 by receiving an increased pressure from the drainage pipe line and a covering portion 22 that covers the upper surface side of the valve body 14 are provided.

詳細には、筒状本体１１は、後述する弁支持体１３の支持体筒部１６と外側部材２１の筒状部２３とで構成され、合成樹脂により全体として中空筒状に形成されている。弁支持体１３の支持体筒部１６の外面にはＯリング１９が嵌め込まれ、外側部材２１の筒状部２３の内面との間は気密状態に保たれている。第１掛止部２５は、鍔状に形成され、筒状本体１１の筒状部２３の外面の上端部から水平方向の外方に一体に張り出している。第１固定部２４は、外側部材２１の筒状部２３の外面に形成され、第１掛止部２５により掛止された姿勢で、接着により蓋体５０の第１貫通孔５２に固定される。但し、第１固定部２４は、排気弁装置１が蓋体５０の第２貫通孔５３に設置される場合は、後述するように、ユニット固定部材３０の外装筒体３１の内面に接着により固定される。 Specifically, the tubular main body 11 is composed of a support tubular portion 16 of the valve support 13 and a tubular portion 23 of the outer member 21, which will be described later, and is formed in a hollow tubular shape as a whole by a synthetic resin. An O-ring 19 is fitted on the outer surface of the support cylinder portion 16 of the valve support body 13 and is maintained in an airtight state with the inner surface of the tubular portion 23 of the outer member 21. The first hooking portion 25 is formed in a brim shape and integrally projects outward from the upper end portion of the outer surface of the tubular portion 23 of the tubular main body 11 in the horizontal direction. The first fixing portion 24 is formed on the outer surface of the tubular portion 23 of the outer member 21, and is fixed to the first through hole 52 of the lid 50 by adhesion in a posture of being hooked by the first hooking portion 25. .. However, when the exhaust valve device 1 is installed in the second through hole 53 of the lid 50, the first fixing portion 24 is fixed to the inner surface of the outer cylinder 31 of the unit fixing member 30 by adhesion, as will be described later. Will be done.

弁体１４は、図２(a)に示すように、薄厚の円形平板状に形成されて筒状本体１１内の通気路１２の開口全体を１枚で閉鎖する閉鎖部１４ａと、その下面の円中心部から直下に突出する軸部１４ｂと、閉鎖部１４ａの円中心部から下方に弁支持体１３の架設部１８の高さ分だけ間隔をあけて設けられた、軸部１４ｂより径大の係合突起１４ｃとにより構成され、ゴム、軟質樹脂等の軟質材を用いて一体に形成されている。 As shown in FIG. 2A, the valve body 14 has a closing portion 14a formed in a thin circular flat plate shape and closing the entire opening of the ventilation passage 12 in the tubular main body 11 with one sheet, and a closing portion 14a on the lower surface thereof. The diameter of the shaft portion 14b protruding directly below the center of the circle and the diameter of the shaft portion 14b larger than that of the shaft portion 14b provided below the center of the circle of the closing portion 14a by the height of the erection portion 18 of the valve support 13. It is composed of the engaging protrusions 14c of the above, and is integrally formed by using a soft material such as rubber or a soft resin.

弁体１４は、その下方に位置する弁支持体１３に取り付けて支持される。弁体１４は、弁体ユニット１０が、図７及び図８に示すように、単独で第１貫通孔５２に固定されたとき、蓋体５０の上面５１より上方に位置するように設けられている。弁支持体１３は、図２(b)に示すように、略中空筒状に形成され、上端部には弁体１４を下方から支持する支持部１５が形成され、その下側部分は支持体筒部１６となっている。支持部１５は、上端面が弁体１４が載置され着座する着座部１７となっており、その僅か下方部分には弁支持体１３の上部開口に十字形状に架設部１８が架設され、架設部１８が交差する円中心部分の基部１８ａには弁体１４の軸部１４ｂが挿通され弁体１４を支持するための支持孔１８ｂが形成されている。 The valve body 14 is attached to and supported by the valve support 13 located below the valve body 14. The valve body 14 is provided so that the valve body unit 10 is located above the upper surface 51 of the lid 50 when the valve body unit 10 is independently fixed to the first through hole 52, as shown in FIGS. 7 and 8. There is. As shown in FIG. 2B, the valve support 13 is formed in a substantially hollow tubular shape, and a support portion 15 for supporting the valve body 14 from below is formed at the upper end portion, and a lower portion thereof is a support body. It is a cylinder portion 16. The upper end surface of the support portion 15 is a seating portion 17 on which the valve body 14 is placed and seated, and a cross-shaped erection portion 18 is erected in the upper opening of the valve support 13 at a slightly lower portion thereof. A shaft portion 14b of the valve body 14 is inserted into the base portion 18a of the circular center portion where the portions 18 intersect, and a support hole 18b for supporting the valve body 14 is formed.

弁体１４は軸部１４ｂを弁支持体１３の架設部１８の支持孔１８ｂに強制的に押し込まれることにより弾性変形しつつ嵌め込まれて支持部１５に着脱自在に取り付けられている。弁体１４は、図２(c)に示すように、閉鎖部１４ａの下面が弁支持体１３の着座部１７に均一に載置され、通気路１２を弁支持体１３の上端開口部において封止する。 The valve body 14 is fitted into the support portion 15 while being elastically deformed by forcibly pushing the shaft portion 14b into the support hole 18b of the erection portion 18 of the valve support body 13, and is detachably attached to the support portion 15. In the valve body 14, as shown in FIG. 2C, the lower surface of the closing portion 14a is uniformly placed on the seating portion 17 of the valve support 13, and the air passage 12 is sealed at the upper end opening of the valve support 13. Stop.

弁支持体１３の支持体筒部１６は、下部の周壁の互いに反対側となる２箇所に、外方に僅かに突出する鈎状の係止突起１６ａが形成されている。この係止突起１６ａは、外側部材２１の筒状部２３の内壁の下端部に形成された所定長さの凹溝からなる係止凹部２３ａに係止する。そして、支持体筒部１６の下部の周壁には係止突起１６ａを挟んだ左右両側に下端に達する縦方向のスリット１６ｃが形成され、この一対のスリット１６ｃ，１６ｃによりその間に弾性片１６ｂが形成されている。弁支持体１３は、弾性片１６ｂを内外方向に弾性変形させつつ弁支持体１３をＯリング１９が嵌め込まれた状態で外側部材２１の筒状部２３内に下方から挿入し、係止突起１６ａと係止凹部２３ａとを係止させることにより、外側に外側部材２１が取り付けられ一体化される。 The support cylinder portion 16 of the valve support 13 is formed with hook-shaped locking projections 16a that slightly project outward at two locations on opposite sides of the lower peripheral wall. The locking projection 16a is locked in a locking recess 23a formed of a concave groove having a predetermined length formed at the lower end of the inner wall of the tubular portion 23 of the outer member 21. A vertical slit 16c reaching the lower end is formed on both the left and right sides of the peripheral wall below the support cylinder portion 16 with the locking projection 16a interposed therebetween, and an elastic piece 16b is formed between the pair of slits 16c and 16c. Has been done. The valve support 13 inserts the valve support 13 into the tubular portion 23 of the outer member 21 from below with the O-ring 19 fitted while elastically deforming the elastic piece 16b in the inward and outward directions, and the locking projection 16a By locking the locking recess 23a and the locking recess 23a, the outer member 21 is attached to the outside and integrated.

外側部材２１は、図２(d)に示すように、全体が筒状で一端開口部が閉塞された形状に形成され、一端開口部が閉塞された上部側に形成され弁体１４の上面側を覆う覆い部２２と、下部側に形成された筒状部２３と、筒状本体１１の外面から外方に張り出した第１掛止部２５と、で一体に形成されている。 As shown in FIG. 2D, the outer member 21 is formed in a shape in which the entire body is tubular and the opening at one end is closed, and the outer member 21 is formed on the upper side where the opening at one end is closed and is formed on the upper surface side of the valve body 14. The covering portion 22 covering the above, the tubular portion 23 formed on the lower side, and the first hooking portion 25 protruding outward from the outer surface of the tubular main body 11 are integrally formed.

ここで、覆い部２２は、略円盤状に形成された天壁２２ａとその下方に形成され覆い部２２の側方をなす円環状の側壁２２ｂとで形成されている。天壁２２ａは弁体１４の閉鎖部１４ａ全体を上方から覆っている。側壁２２ｂは周方向に等間隔の４箇所に通気路１２を外部に連通させる排気口２２ｃが設けられている。弁支持体１３と外側部材２１とが一体化した状態において、覆い部２２の天壁２２ａは弁体１４の上方に所定距離離間して配置されている。これにより、弁体１４が開口動作したときには、筒状本体１１内の通気路１２は弁体１４の開口から覆い部２２の排気口２２ｃを通して外部に連通する状態となる。 Here, the covering portion 22 is formed by a top wall 22a formed in a substantially disk shape and an annular side wall 22b formed below the top wall 22a and forming a side surface of the covering portion 22. The top wall 22a covers the entire closed portion 14a of the valve body 14 from above. The side wall 22b is provided with exhaust ports 22c for communicating the ventilation passages 12 to the outside at four locations at equal intervals in the circumferential direction. In a state where the valve support 13 and the outer member 21 are integrated, the top wall 22a of the covering portion 22 is arranged above the valve body 14 at a predetermined distance. As a result, when the valve body 14 is opened, the ventilation passage 12 in the tubular main body 11 is in a state of communicating with the outside through the opening of the valve body 14 through the exhaust port 22c of the covering portion 22.

外側部材２１の第１掛止部２５は、円環突起状に形成され、筒状本体１１の外面、より具体的には筒状本体１１の外側部材２１の筒状部２３の外面において覆い部２２の排気口２２ｃと隣接する下側部分から、外方に張り出している。したがって、弁体１４は前述のように第１掛止部２５より上方に位置することになる。第１掛止部２５は、弁体ユニット１０が蓋体５０に単独で設置される場合には、蓋体５０の上面５１における第１貫通孔５２の周縁５２ａに掛止され、弁体ユニット１０がユニット固定部材３０を使用して蓋体５０の第２貫通孔５３に設置される場合には、後述するユニット固定部材３０の外装筒体３１の内面に形成された段差部３５に掛止される。なお、第１掛止部２５は、段差部３５に引掛けられて掛止される引掛け部２６ともなる。 The first hooking portion 25 of the outer member 21 is formed in an annular protrusion shape and covers the outer surface of the tubular main body 11, more specifically, the outer surface of the tubular portion 23 of the outer member 21 of the tubular main body 11. It projects outward from the lower portion adjacent to the exhaust port 22c of 22. Therefore, the valve body 14 is located above the first hooking portion 25 as described above. When the valve body unit 10 is independently installed on the lid body 50, the first hooking portion 25 is hooked on the peripheral edge 52a of the first through hole 52 on the upper surface 51 of the lid body 50, and the valve body unit 10 Is installed in the second through hole 53 of the lid 50 using the unit fixing member 30, and is hooked on the stepped portion 35 formed on the inner surface of the outer cylinder 31 of the unit fixing member 30, which will be described later. To. The first hooking portion 25 also serves as a hooking portion 26 that is hooked and hooked on the stepped portion 35.

外側部材２１の筒状部２３の下端側２箇所には係止凹部２３ａが形成されており、弁支持体１３の係止突起１６ａとの係止により弁支持体１３と外側部材２１とは一体化し、弁体ユニット１０が構成されている。 Locking recesses 23a are formed at two locations on the lower end side of the tubular portion 23 of the outer member 21, and the valve support 13 and the outer member 21 are integrated by locking the valve support 13 with the locking projection 16a. The valve body unit 10 is configured.

一方、弁体ユニット１０を蓋体５０の第２貫通孔５３に固定するためのユニット固定部材３０は、図１及び図５に示すように、一端から他端にかけて内部が連通する中空筒状に形成された外装筒体３１と、外装筒体３１の一端から外方に張り出した第２掛止部３２と、蓋体５０の第２貫通孔５３に固定される第２固定部３３と、を備えている。外装筒体３１は、図３に示すように、その外面に形成されたネジ部３４に後述の固定ナット４１が締め付けられることにより、弁体ユニット１０とともに蓋体５０の第２貫通孔５３に固定できるようになっている。 On the other hand, as shown in FIGS. 1 and 5, the unit fixing member 30 for fixing the valve body unit 10 to the second through hole 53 of the lid 50 has a hollow tubular shape in which the inside communicates from one end to the other end. The formed outer cylinder 31, the second hook 32 protruding outward from one end of the outer cylinder 31, and the second fixing portion 33 fixed to the second through hole 53 of the lid 50. I have. As shown in FIG. 3, the outer cylinder 31 is fixed to the second through hole 53 of the lid 50 together with the valve body unit 10 by tightening the fixing nut 41 described later to the screw portion 34 formed on the outer surface thereof. You can do it.

詳細には、外装筒体３１は、合成樹脂で形成され、図３及び図５に示すように、内面において上端から下方に所定距離離間した位置に、それより下方部分が縮径する段差部３５が環状に形成されている。この段差部３５には弁体ユニット１０の第１掛止部２５でもある引掛け部２６が掛止可能となっている。外装筒体３１の外面において段差部３５より上側部分は、蓋体５０の第２貫通孔５３の内径とほぼ同一の外径に形成されており、外装筒体３１の内面において段差部３５より下側部分は、弁体ユニット１０の外側部材２１の筒状部２３の外面とほぼ同一の内径に形成されている。このように形成された外装筒体３１は、蓋体５０の第２貫通孔５３に内挿されるとともに弁体ユニット１０を内部に配置し収容可能となっている。そして、内部に弁体ユニット１０を配置、収容した状態においては、図５及び図６に示すように、外装筒体３１の内面の段差部３５より上側部分と弁体ユニット１０の覆い部２２の側壁２２ｂとの間には空隙Ｓが形成され、この空隙Ｓ内を空気が通流可能となっている。なお、外装筒体３１は、金属材等で形成してもよい。 Specifically, the outer cylinder 31 is made of synthetic resin, and as shown in FIGS. 3 and 5, a step portion 35 whose inner surface is separated from the upper end by a predetermined distance downward from the upper end and the lower portion thereof is reduced in diameter. Is formed in a ring shape. A hooking portion 26, which is also a first hooking portion 25 of the valve body unit 10, can be hooked on the stepped portion 35. On the outer surface of the outer cylinder 31, the portion above the step portion 35 is formed to have an outer diameter substantially the same as the inner diameter of the second through hole 53 of the lid 50, and is below the step portion 35 on the inner surface of the outer cylinder 31. The side portion is formed to have substantially the same inner diameter as the outer surface of the tubular portion 23 of the outer member 21 of the valve body unit 10. The outer cylinder 31 formed in this way is inserted into the second through hole 53 of the lid 50, and the valve body unit 10 is arranged inside so that the outer cylinder 31 can be accommodated. Then, in the state where the valve body unit 10 is arranged and housed inside, as shown in FIGS. 5 and 6, the portion above the step portion 35 on the inner surface of the outer cylinder 31 and the covering portion 22 of the valve body unit 10 A gap S is formed between the side wall 22b and the side wall S, and air can flow through the gap S. The outer cylinder 31 may be formed of a metal material or the like.

第２掛止部３２は、円環板状に形成され、外装筒体３１の一端である上端から外方に水平状態に張り出し、蓋体５０の上面５１における第２貫通孔５３の周縁５３ａに上方から掛止可能となっている。第２掛止部３２は、上面は緩い傾斜面に形成され、下面は水平面に形成されて蓋体５０の上面５１と均一に面接触するものとなっている。 The second hooking portion 32 is formed in the shape of an annular plate, projects horizontally outward from the upper end which is one end of the outer cylinder 31, and extends to the peripheral edge 53a of the second through hole 53 on the upper surface 51 of the lid 50. It can be stopped from above. The upper surface of the second hooking portion 32 is formed on a gently inclined surface, and the lower surface is formed on a horizontal surface so as to be in uniform surface contact with the upper surface 51 of the lid 50.

外装筒体３１の外面において高さ方向のほぼ中間位置より下方部分には雄ネジからなるネジ部３４が設けられており、外装筒体３１のネジ部３４は、第２固定部３３を構成している。排気弁装置１は、第２掛止部３２が蓋体５０の第２貫通孔５３の周縁５３ａに掛止された姿勢で、ネジ部３４に固定ナット４１を締め付けて蓋体５０に固定することができる。 A screw portion 34 made of a male screw is provided on the outer surface of the outer cylinder 31 below a substantially intermediate position in the height direction, and the screw portion 34 of the outer cylinder 31 constitutes a second fixing portion 33. ing. The exhaust valve device 1 is fixed to the lid 50 by tightening the fixing nut 41 to the screw portion 34 in a posture in which the second hook 32 is hooked to the peripheral edge 53a of the second through hole 53 of the lid 50. Can be done.

前記固定ナット４１は、合成樹脂で中空筒状に形成され、図４及び図５に示すように、上端開口４２の周縁部には円環状の当接部４３が側方に張り出し形成されている。この当接部４３は排気弁装置１を蓋体５０の第２貫通孔５３に固定したときに蓋体５０の下面５４に当接する。固定ナット４１の外面には把持し易くするための縦方向の複数、本実施形態においては６本の小突条４４が周方向に等間隔で当接部４３から下端までの全長に渡って突設されている。固定ナット４１の内面には外装筒体３１のネジ部３４が螺回動可能な雌ネジ部４５が形成されている。雌ネジ部４５は固定ナット４１の内面において高さ方向のほぼ中間位置より下側に形成されている。これにより、外装筒体３１の外面のネジ部３４に締め付けるとき、固定ナット４１は最初は中心軸方向に直進させて外装筒体３１の中間部まで外挿してから螺回動を開始し締め付ければよいので固定ナット４１の取り付けを作業性良く行なうことができる。固定ナット４１は、金属材等で形成してもよい。 The fixing nut 41 is formed of a synthetic resin in a hollow tubular shape, and as shown in FIGS. 4 and 5, an annular contact portion 43 is formed so as to laterally project from the peripheral edge of the upper end opening 42. .. The contact portion 43 comes into contact with the lower surface 54 of the lid 50 when the exhaust valve device 1 is fixed to the second through hole 53 of the lid 50. On the outer surface of the fixing nut 41, a plurality of small ridges 44 in the vertical direction for easy gripping, and in this embodiment, six small ridges 44 project at equal intervals in the circumferential direction over the entire length from the contact portion 43 to the lower end. It is installed. A female screw portion 45 is formed on the inner surface of the fixing nut 41 so that the screw portion 34 of the outer cylinder 31 can be screwed and rotated. The female screw portion 45 is formed on the inner surface of the fixing nut 41 below a substantially intermediate position in the height direction. As a result, when tightening to the screw portion 34 on the outer surface of the outer cylinder 31, the fixing nut 41 is first moved straight in the direction of the central axis, externally inserted to the middle portion of the outer cylinder 31, and then screw rotation is started and tightened. Since it is sufficient, the fixing nut 41 can be attached with good workability. The fixing nut 41 may be formed of a metal material or the like.

なお、固定ナット４１は、ネジ部３４とともに第２固定部３３を構成するものでもあり、外装筒体３１とともにユニット固定部材３０を構成するものでもある。また、固定ナット４１は、広義には、外装筒体３１の一部を構成するものと捉えることもできる。 The fixing nut 41 also constitutes the second fixing portion 33 together with the screw portion 34, and also constitutes the unit fixing member 30 together with the outer cylinder 31. Further, the fixing nut 41 can be broadly regarded as forming a part of the outer cylinder 31.

弁体ユニット１０とユニット固定部材３０とは、弁体ユニット１０の筒状部２３の外面の第１固定部２４とユニット固定部材３０の外装筒体３１の内面とが接着されることにより組付固定され一体化されて排気弁装置１が構成されている。 The valve body unit 10 and the unit fixing member 30 are assembled by adhering the first fixing portion 24 on the outer surface of the tubular portion 23 of the valve body unit 10 and the inner surface of the outer tubular body 31 of the unit fixing member 30. The exhaust valve device 1 is configured by being fixed and integrated.

ここで、弁体ユニット１０あるいは排気弁装置１が設置される蓋体５０は、合成樹脂材等からなり、図１、図５乃至図１０に示すように、上部側が略円盤状に形成され、上面５１は平坦面に形成されている。蓋体５０は側面が傾斜面に形成された周端部５５がその外周側に設けられた受け枠５７に載置され、この受け枠５７は直管や排気マス等の円筒形状の立上り管５８の上端に接着等によって固定されている。これにより、蓋体５０は、立上り管５８の上方開口部に着脱自在に取り付けられている。 Here, the lid body 50 on which the valve body unit 10 or the exhaust valve device 1 is installed is made of a synthetic resin material or the like, and as shown in FIGS. 1, 5 to 10, the upper side is formed in a substantially disk shape. The upper surface 51 is formed on a flat surface. The lid 50 has a peripheral end portion 55 whose side surface is formed on an inclined surface and is placed on a receiving frame 57 provided on the outer peripheral side thereof. The receiving frame 57 is a cylindrical rising pipe 58 such as a straight pipe or an exhaust mass. It is fixed to the upper end of the lid by adhesion or the like. As a result, the lid 50 is detachably attached to the upper opening of the rising pipe 58.

次に、上記のように構成された弁体ユニット１０あるいは排気弁装置１の蓋体５０への設置について説明する。
弁体ユニット１０を単独で蓋体５０の第１貫通孔５２に設置するときは、ドリル等の切削工具を使用して蓋体５０に第１貫通孔５２を形成した後、弁体ユニット１０の第１固定部２４である筒状本体１１の外面あるいは蓋体５０の第１貫通孔５２の内面に接着剤を塗布し、弁体ユニット１０を上方から蓋体５０の第１貫通孔５２内に挿入して設置することができる。設置後は、図８に示すように、第１掛止部２５の下面が蓋体５０の上面５１における第１貫通孔５２の周縁５２ａに掛止し、弁体ユニット１０の第１固定部２４と蓋体５０の第１貫通孔５２の内面とが接着して固定された状態となる。 Next, installation of the valve body unit 10 or the exhaust valve device 1 configured as described above on the lid body 50 will be described.
When the valve body unit 10 is independently installed in the first through hole 52 of the lid body 50, after forming the first through hole 52 in the lid body 50 using a cutting tool such as a drill, the valve body unit 10 An adhesive is applied to the outer surface of the tubular main body 11 which is the first fixing portion 24 or the inner surface of the first through hole 52 of the lid 50, and the valve body unit 10 is placed in the first through hole 52 of the lid 50 from above. It can be inserted and installed. After installation, as shown in FIG. 8, the lower surface of the first hooking portion 25 hooks on the peripheral edge 52a of the first through hole 52 on the upper surface 51 of the lid 50, and the first fixing portion 24 of the valve body unit 10 And the inner surface of the first through hole 52 of the lid 50 are adhered and fixed.

一方、排気弁装置１を蓋体５０の第２貫通孔５３に設置するときは、ドリル等の切削工具を使用して蓋体５０に第１貫通孔５２より大径の第２貫通孔５３を形成した後、弁体ユニット１０の第１固定部２４とユニット固定部材３０の外装筒体３１の内面とを接着剤により接着して排気弁装置１を組み付け、これを上方から蓋体５０の第２貫通孔５３内に挿入する。このとき、蓋体５０の上面５１における第２貫通孔５３の周縁５３ａに、円環平板状のゴム、軟質合成樹脂等で形成された面パッキング３６を取り付けておくのが望ましい。次いで、蓋体５０の下面５４側から固定ナット４１をユニット固定部材３０の外装筒部のネジ部３４に螺回動させて締め付け、固定ナット４１の当接部４３を蓋体５０に下面５４に当接させて第２掛止部３２と固定ナット４１とで蓋体５０の表裏を挟持する。これにより、排気弁装置１は蓋体５０の第２貫通孔５３に設置される。このとき、蓋体５０の上面５１における第２貫通孔５３の周縁５３ａと第２掛止部３２との間には面パッキング３６が介挿されていれば、この部分の気密が確保され、雨水等の水あるいは塵埃などが蓋体５０の裏面側に侵入するのを確実に防止できる。なお、前述した弁体ユニット１０を蓋体５０の第１貫通孔５２に取り付けるときは、第１固定部２４において接着により気密性は確保されるので、面パッキング３６は特に必要としない。 On the other hand, when the exhaust valve device 1 is installed in the second through hole 53 of the lid 50, a cutting tool such as a drill is used to provide the lid 50 with a second through hole 53 having a diameter larger than that of the first through hole 52. After the formation, the first fixing portion 24 of the valve body unit 10 and the inner surface of the outer cylinder 31 of the unit fixing member 30 are adhered with an adhesive to assemble the exhaust valve device 1, and this is attached to the lid 50 from above. 2 Insert into the through hole 53. At this time, it is desirable to attach a surface packing 36 made of an annular flat plate-shaped rubber, a soft synthetic resin, or the like to the peripheral edge 53a of the second through hole 53 on the upper surface 51 of the lid 50. Next, the fixing nut 41 is screwed and tightened from the lower surface 54 side of the lid 50 to the screw portion 34 of the outer cylinder portion of the unit fixing member 30, and the contact portion 43 of the fixing nut 41 is attached to the lower surface 54 of the lid 50. The front and back surfaces of the lid 50 are sandwiched between the second hook 32 and the fixing nut 41 so as to be in contact with each other. As a result, the exhaust valve device 1 is installed in the second through hole 53 of the lid body 50. At this time, if a surface packing 36 is inserted between the peripheral edge 53a of the second through hole 53 and the second hooking portion 32 on the upper surface 51 of the lid 50, the airtightness of this portion is ensured and rainwater It is possible to reliably prevent water or dust such as water from entering the back surface side of the lid 50. When the valve body unit 10 described above is attached to the first through hole 52 of the lid 50, the surface packing 36 is not particularly required because the airtightness is ensured by adhesion at the first fixing portion 24.

排気弁装置１が蓋体５０の第２貫通孔５３に固定された状態においては、図５に示すように、弁体ユニット１０の第１掛止部２５でもある引掛け部２６は、弁体ユニット１０が単独で蓋体５０の第１貫通孔５２に固定された際には蓋体５０の上面５１における第１貫通孔５２の周縁５２ａに掛止されるのに対し、ユニット固定部材３０の外装筒体３１の内面の段差部３５に引掛けられ掛止される。つまり、外装筒体３１の段差部３５は外装筒体３１の上端開口から所定距離下方に設けられている分、蓋体５０の上面５１より下方に位置する。したがって、覆い部２２の上面は、弁体ユニット１０が単独で蓋体５０の第１貫通孔５２に固定された際の覆い部２２の上面より下方に位置し、段差部３５の位置を適宜設定することにより、第２掛止部３２の最上面と同一高さまたはこれより下方の任意の高さに位置させることができる。 In a state where the exhaust valve device 1 is fixed to the second through hole 53 of the lid body 50, as shown in FIG. 5, the hooking portion 26, which is also the first hooking portion 25 of the valve body unit 10, is a valve body. When the unit 10 is independently fixed to the first through hole 52 of the lid 50, it is hooked on the peripheral edge 52a of the first through hole 52 on the upper surface 51 of the lid 50, whereas the unit fixing member 30 It is hooked and stopped by the stepped portion 35 on the inner surface of the outer cylinder 31. That is, the stepped portion 35 of the outer cylinder 31 is located below the upper surface 51 of the lid 50 by a predetermined distance below the upper end opening of the outer cylinder 31. Therefore, the upper surface of the covering portion 22 is located below the upper surface of the covering portion 22 when the valve body unit 10 is independently fixed to the first through hole 52 of the lid body 50, and the position of the step portion 35 is appropriately set. By doing so, it can be positioned at the same height as the uppermost surface of the second hooking portion 32 or at an arbitrary height below this.

次に、このように蓋体５０に設置された排気弁装置１において、何らかの原因により排水トラップ間の排水管路内の圧力が上昇したときについて説明すると、排水管路内の圧力が上昇したとき、排気弁装置１の通気路１２内の圧力も上昇する。すると、図６に示すように、弁体１４の閉鎖部１４ａが基部１８ａを軸として弾性的に上方に撓み変形して開口動作する。それに伴い、排気弁装置１の通気路１２内の空気は、矢印で示すように、弁体１４の開口を通って上昇した後、覆い部２２の側壁２２ｂの排気口２２ｃを通過して外装筒体３１の内面の上部と覆い部２２の側壁２２ｂとの間の空隙Ｓを流れて上昇し大気に放出される。これにより、排水管路内の圧力上昇は防止される。 Next, in the exhaust valve device 1 installed on the lid 50 in this way, when the pressure in the drainage pipe line between the drainage traps rises for some reason will be described. When the pressure in the drainage pipe line rises. , The pressure in the ventilation passage 12 of the exhaust valve device 1 also increases. Then, as shown in FIG. 6, the closed portion 14a of the valve body 14 elastically bends and deforms upward with the base portion 18a as an axis to perform an opening operation. Along with this, the air in the ventilation passage 12 of the exhaust valve device 1 rises through the opening of the valve body 14 as shown by an arrow, and then passes through the exhaust port 22c of the side wall 22b of the covering portion 22 to form an outer cylinder. It flows through the gap S between the upper part of the inner surface of the body 31 and the side wall 22b of the covering portion 22, rises, and is released into the atmosphere. As a result, the pressure rise in the drainage pipe line is prevented.

ここで、弁体設置装置２は、排気弁装置１から弁体１４を除いたものであり、弁体１４を蓋体５０に設置するための装置として、本実施形態の発明を別表現したものである。したがって、弁体設置装置２は実質的には排気弁装置１と同じ構成となっており、また、排気弁装置１と同様に作用する。なお、請求項の弁体設置装置の「筒部」は、排気弁装置１の筒状本体１１及び外装筒体３１に相当する。 Here, the valve body installation device 2 is an exhaust valve device 1 excluding the valve body 14, and is a different expression of the invention of the present embodiment as a device for installing the valve body 14 on the lid body 50. Is. Therefore, the valve body installation device 2 has substantially the same configuration as the exhaust valve device 1, and operates in the same manner as the exhaust valve device 1. The "cylinder portion" of the valve body installation device according to the claim corresponds to the tubular main body 11 and the outer tubular body 31 of the exhaust valve device 1.

次に、本実施形態の排気弁装置１の作用を説明する。
排気弁装置１は、蓋体５０の第２貫通孔５３に固定された際、弁体ユニット１０の覆い部２２の上面は、弁体ユニット１０が蓋体５０の第１貫通孔５２に固定された際の覆い部２２の上面より下方に位置する。これにより、排気弁装置１が蓋体５０の貫通孔に設置された状態で、覆い部２２が蓋体５０の上面５１から大きく突出するのを抑えることができる。 Next, the operation of the exhaust valve device 1 of the present embodiment will be described.
When the exhaust valve device 1 is fixed to the second through hole 53 of the lid 50, the upper surface of the covering portion 22 of the valve body unit 10 is fixed to the first through hole 52 of the lid 50. It is located below the upper surface of the cover portion 22 at the time. As a result, it is possible to prevent the covering portion 22 from protruding significantly from the upper surface 51 of the lid 50 while the exhaust valve device 1 is installed in the through hole of the lid 50.

ここで、覆い部２２が蓋体５０の上面５１から突出する量、高さは、ユニット固定部材３０の外装筒体３１の内面において段差部３５の形成されている位置が外装筒体３１の上端開口から下方に離間する距離に応じて変化する。したがって、弁体ユニット１０の最上部である覆い部２２の上面の突出高さは、段差部３５の位置を適宜設定することにより、任意に設定することができる。なお、段差部３５の設定位置によっては、覆い部２２の上面は、第２掛止部３２の最上面より上方に位置することもあるが、いずれにしても、弁体ユニット１０が単独で蓋体５０の第１貫通孔５２に固定された際の覆い部２２の上面よりは下方に位置する。 Here, the amount and height of the covering portion 22 protruding from the upper surface 51 of the lid 50 are such that the position where the step portion 35 is formed on the inner surface of the outer cylinder 31 of the unit fixing member 30 is the upper end of the outer cylinder 31. It changes according to the distance from the opening downward. Therefore, the protruding height of the upper surface of the covering portion 22, which is the uppermost portion of the valve body unit 10, can be arbitrarily set by appropriately setting the position of the step portion 35. Depending on the set position of the step portion 35, the upper surface of the covering portion 22 may be located above the uppermost surface of the second hooking portion 32, but in any case, the valve body unit 10 alone covers the lid. It is located below the upper surface of the covering portion 22 when it is fixed to the first through hole 52 of the body 50.

これにより、歩行時に弁体ユニット１０の覆い部２２につまづいたり外観的に弁体ユニット１０が蓋体５０から飛び出ているのが気になるなどの不具合が解消される。 As a result, problems such as tripping over the covering portion 22 of the valve body unit 10 during walking and being worried that the valve body unit 10 is apparently protruding from the lid 50 are solved.

また、ドリル等の切削工具を使用して既存の蓋体５０に貫通孔を形成し、これに排気弁装置１を設置することができる。このため、排気弁装置１を設置する都度、これに対応する専用の蓋体５０を別途用意する必要がないので、蓋体５０を交換する手間が省け、蓋体５０の無駄を省くことができる。 Further, a cutting tool such as a drill can be used to form a through hole in the existing lid 50, and the exhaust valve device 1 can be installed in the through hole. Therefore, it is not necessary to separately prepare a dedicated lid 50 corresponding to the exhaust valve device 1 each time the exhaust valve device 1 is installed, so that the trouble of replacing the lid 50 can be saved and the waste of the lid 50 can be saved. ..

なお、蓋体５０が通路にあって歩行によりつまづいたりすることがない箇所に設置されていたり、弁体ユニット１０が蓋体５０から飛び出していてもさほど気にならないような場合には、既存の蓋体５０に第１貫通孔５２を形成し、ここに弁体ユニット１０のみを設置することもできる。したがって、弁体ユニット１０を単独で使用するかユニット固定部材３０を備えた排気弁装置１を使用するかを適宜選択することができる。 If the lid 50 is installed in a passageway so that it will not trip over when walking, or if the valve body unit 10 does not bother the lid 50 even if it protrudes from the lid 50, it already exists. A first through hole 52 may be formed in the lid body 50, and only the valve body unit 10 may be installed therein. Therefore, it is possible to appropriately select whether to use the valve body unit 10 alone or the exhaust valve device 1 provided with the unit fixing member 30.

更に、覆い部２２の下部に外装筒体３１の内面と空隙Ｓを有して対面する側壁２２ｂが形成され、側壁２２ｂに排気口２２ｃが空隙Ｓに向けて形成されているので、弁体ユニット１０の上部が覆い部２２により塞がっていても筒状本体１１の通気路１２からの空気を側壁２２ｂの排気口２２ｃから確実に外部に逃がすことができる。 Further, a side wall 22b is formed in the lower portion of the covering portion 22 so as to have a gap S and faces the inner surface of the outer cylinder 31, and an exhaust port 22c is formed in the side wall 22b toward the gap S. Even if the upper portion of the 10 is blocked by the covering portion 22, the air from the ventilation passage 12 of the tubular main body 11 can be surely released to the outside from the exhaust port 22c of the side wall 22b.

そして、弁体１４が通気路１２を閉鎖した状態で着座する着座部１７が、空隙Ｓの底部より上方に位置しているから、雨水などの水が覆い部２２の排気口２２ｃから弁体ユニット１０の内部に浸入してきたときに、水は空隙Ｓの底部に溜まることとなるため、その上方の着座部１７に着座する弁体１４の上面が水で満たされた冠水状態となってその重量により弁体１４の開口動作が妨げられる、という不具合を抑えることができる。 Since the seating portion 17 on which the valve body 14 is seated with the ventilation passage 12 closed is located above the bottom of the gap S, water such as rainwater can reach the valve body unit from the exhaust port 22c of the covering portion 22. When the water enters the inside of the gap S, the water collects at the bottom of the gap S, so that the upper surface of the valve body 14 seated on the seating portion 17 above the gap S becomes flooded with water and its weight. Therefore, it is possible to suppress a problem that the opening operation of the valve body 14 is hindered.

加えて、排気弁装置１は、外装筒体３１の外面にネジ部３４が形成され、蓋体５０の下面５４側で外装筒体３１のネジ部３４に螺着された固定ナット４１と、第２掛止部３２と、により蓋体５０を挟持して設置、固定されているから、一旦設置した後に蓋体５０から排気弁装置１を取り外すことができる。その取り外しは、まず、予め蓋体５０の上面５１の周縁付近に設けられた小さい溝孔５６にマイナスドライバ等の工具の先端部を差し込んで排気弁装置１ごと蓋体５０を受け枠５７から上方に取り外し、次いで、外装筒体３１から固定ナット４１を取り外して、外装筒体３１ごと弁体ユニット１０を蓋体５０から取り外すことによって行なうことができる。その結果、弁体ユニット１０の内部を掃除するときなどにおいては、一旦蓋体５０を排気弁装置１とともに立上り管５８の上部開口から取り外した後は、蓋体５０ごと把持して取り扱う必要はなく、排気弁装置１を簡単に取り外し、固定ナット４１が取り外された排気弁装置１のみを把持して取り扱うことができる。したがって、弁体ユニット１０を嵩張った状態で取り扱わなくてもよいので取り扱いが容易であり、掃除し易い。また、弁体ユニット１０を交換する際も、排気弁装置１を取り外した蓋体５０は、そのまま再利用できる。 In addition, the exhaust valve device 1 has a fixing nut 41 having a screw portion 34 formed on the outer surface of the outer cylinder 31 and screwed to the screw portion 34 of the outer cylinder 31 on the lower surface 54 side of the lid 50. Since the lid body 50 is sandwiched and fixed by the two hooking portions 32, the exhaust valve device 1 can be removed from the lid body 50 once it is installed. To remove it, first, insert the tip of a tool such as a flat-blade screwdriver into a small groove 56 provided in advance near the peripheral edge of the upper surface 51 of the lid 50, and move the lid 50 together with the exhaust valve device 1 upward from the receiving frame 57. Then, the fixing nut 41 is removed from the outer cylinder 31, and the valve body unit 10 together with the outer cylinder 31 is removed from the lid 50. As a result, when cleaning the inside of the valve body unit 10, it is not necessary to grip and handle the lid 50 together with the lid 50 once the lid 50 is removed from the upper opening of the rising pipe 58 together with the exhaust valve device 1. The exhaust valve device 1 can be easily removed, and only the exhaust valve device 1 from which the fixing nut 41 has been removed can be gripped and handled. Therefore, since the valve body unit 10 does not have to be handled in a bulky state, it is easy to handle and easy to clean. Further, when the valve body unit 10 is replaced, the lid body 50 from which the exhaust valve device 1 has been removed can be reused as it is.

〈第二実施形態〉
次に、本発明の第二実施形態の排気弁装置１及び弁体設置装置２を図９に基づいて説明する。第二実施形態の排気弁装置１及び弁体設置装置２は、第一実施形態の排気弁装置１及び弁体設置装置２と比較して、ユニット固定部材３０を使用して蓋体５０の第２貫通孔５３に固定するための第２固定部３３の態様のみが異なるから、その相違点を中心に説明する。 <Second Embodiment>
Next, the exhaust valve device 1 and the valve body installation device 2 of the second embodiment of the present invention will be described with reference to FIG. Compared with the exhaust valve device 1 and the valve body installation device 2 of the first embodiment, the exhaust valve device 1 and the valve body installation device 2 of the second embodiment use the unit fixing member 30 to form a lid 50. Since only the mode of the second fixing portion 33 for fixing to the two through holes 53 is different, the differences will be mainly described.

図９において、排気弁装置１は、ユニット固定部材３０の外装筒体３１が、第一実施形態のネジ部３４を備えていないものであり、外装筒体３１は、一端から他端にかけて内部が連通する中空筒状に形成され、内部には弁体ユニット１０の引掛け部２６である第１掛止部２５が掛止可能な段差部３５が形成され、外装筒体３１の一端である上端から外方に張り出し、蓋体５０の上面５１における第２貫通孔５３の周縁５３ａに掛止される第２掛止部３２が外方に張り出している。第２掛止部３２により掛止された姿勢で蓋体５０の第２貫通孔５３に固定される第２固定部３３は、外装筒体３１の段差部３５より上側の外面で形成され、接着剤により蓋体５０の第２貫通孔５３の内面に接着され固定されるようになっている。なお、第二実施形態の排気弁装置１は、第２固定部３３において気密性は接着により確保されるので、第一実施形態の排気弁装置１で用いた面パッキング３６は特に必要としない。 In FIG. 9, in the exhaust valve device 1, the outer cylinder 31 of the unit fixing member 30 does not have the screw portion 34 of the first embodiment, and the outer cylinder 31 has an internal portion from one end to the other end. It is formed in the shape of a hollow cylinder that communicates with each other, and a stepped portion 35 that can be hooked by the first hooking portion 25 that is the hooking portion 26 of the valve body unit 10 is formed inside, and the upper end that is one end of the exterior cylinder 31 The second hooking portion 32, which is hooked on the peripheral edge 53a of the second through hole 53 on the upper surface 51 of the lid body 50, projects outward from the outside. The second fixing portion 33, which is fixed to the second through hole 53 of the lid 50 in a posture of being hooked by the second hooking portion 32, is formed on the outer surface above the stepped portion 35 of the outer cylinder 31 and is bonded. The agent is adhered to and fixed to the inner surface of the second through hole 53 of the lid body 50. In the exhaust valve device 1 of the second embodiment, the airtightness is ensured by adhesion at the second fixing portion 33, so that the surface packing 36 used in the exhaust valve device 1 of the first embodiment is not particularly required.

第二実施形態の排気弁装置１は、一旦蓋体５０に固定した後は取り外しできないものの、第２固定部３３は接着により蓋体５０に固定されるものであり、外装筒体３１はネジ部３４を備えておらず、全長が第一実施形態の外装筒体３１より短かくコンパクトであり、また、固定ナット４１を必要としないから、ユニット固定部材３０は、全体として小型で簡素な構成となっている。なお、第二実施形態の排気弁装置１の一方を構成する弁体ユニット１０は、第一実施形態のものと同一である。 Although the exhaust valve device 1 of the second embodiment cannot be removed once it is fixed to the lid 50, the second fixing portion 33 is fixed to the lid 50 by adhesion, and the outer cylinder 31 is a screw portion. The unit fixing member 30 has a small and simple structure as a whole because it is not provided with 34, the total length is shorter and more compact than the outer cylinder 31 of the first embodiment, and the fixing nut 41 is not required. It has become. The valve body unit 10 constituting one of the exhaust valve devices 1 of the second embodiment is the same as that of the first embodiment.

ところで、上記第一実施形態において、弁体ユニット１０の外側部材２１とユニット固定部材３０の外装筒体３１とは接着により接合されているが、これに限られるものではなく、図１０に示すように、弁体ユニット１０の外側部材２１とユニット固定部材３０の外装筒体３１とを一体成形により形成してもよい。 By the way, in the first embodiment, the outer member 21 of the valve body unit 10 and the outer cylinder 31 of the unit fixing member 30 are joined by adhesion, but the present invention is not limited to this, and as shown in FIG. In addition, the outer member 21 of the valve body unit 10 and the outer cylinder 31 of the unit fixing member 30 may be integrally formed.

また、上記各実施形態において、弁体ユニット１０の外側部材２１とユニット固定部材３０の外装筒体３１とは、接着により接合されあるいは一体成形されているが、外側部材２１の外面及び外装筒体３１の内面にネジを形成し、これらのネジの螺合により接合してもよい。但し、この場合、弁体ユニット１０の外側部材２１に設けるネジは、外側部材２１の外面において、弁体ユニット１０を単独で蓋体５０の第１貫通孔５２に固定したときに、蓋体５０の第１貫通孔５２の内面と対向する位置に設けられると、接着による弁体ユニット１０と蓋体５０の第１貫通孔５２との固定が困難となるので、外側部材２１の外面において蓋体５０の第１貫通孔５２より下方となる位置に設ける必要がある。なお、この態様の場合は、外側部材２１の外面と外装筒体３１の内面との間にＯリング等のシール部材を介挿させるとよい。 Further, in each of the above embodiments, the outer member 21 of the valve body unit 10 and the outer cylinder 31 of the unit fixing member 30 are joined or integrally molded by adhesion, but the outer surface of the outer member 21 and the outer cylinder 31 are integrally molded. Screws may be formed on the inner surface of 31 and joined by screwing these screws. However, in this case, the screw provided on the outer member 21 of the valve body unit 10 is used when the valve body unit 10 is independently fixed to the first through hole 52 of the lid body 50 on the outer surface of the outer member 21. If it is provided at a position facing the inner surface of the first through hole 52, it becomes difficult to fix the valve body unit 10 and the first through hole 52 of the lid 50 by adhesion, so that the lid is formed on the outer surface of the outer member 21. It is necessary to provide it at a position below the first through hole 52 of 50. In the case of this embodiment, it is preferable to insert a seal member such as an O-ring between the outer surface of the outer member 21 and the inner surface of the outer cylinder 31.

更に、上記各実施形態の排気弁装置１は、外装筒体３１の第２掛止部３２と固定ナット４１との挟持や、外装筒体３１の第２固定部３３の接着により、蓋体５０の第２貫通孔５３に固定しているが、これに限られるものではなく、上方から第２掛止部３２と蓋体５０の上面５１とをビス止めして固定したり、磁石を第２掛止部３２あるいは蓋体５０の上面５１に埋め込んで磁力を利用して固定するなどの手段を用いてもよく、また、排気弁装置１は自重により蓋体５０の第２貫通孔５３内に収まるので、外装筒体３１を蓋体５０の第２貫通孔５３に単に圧入によって設置することも可能である。 Further, the exhaust valve device 1 of each of the above embodiments has a lid 50 by sandwiching the second hook 32 of the outer cylinder 31 and the fixing nut 41 and adhering the second fixing 33 of the outer cylinder 31. Although it is fixed to the second through hole 53 of the above, the present invention is not limited to this, and the second hooking portion 32 and the upper surface 51 of the lid 50 are fixed by screws from above, or the magnet is fixed to the second through hole 53. A means such as embedding it in the hooking portion 32 or the upper surface 51 of the lid 50 and fixing it by using magnetic force may be used, and the exhaust valve device 1 is placed in the second through hole 53 of the lid 50 by its own weight. Since it fits, the outer cylinder 31 can be installed in the second through hole 53 of the lid 50 simply by press fitting.

加えて、上記各実施形態の弁体１４は、薄厚の円形平板状に形成された１枚の閉鎖部１４ａで筒状本体１１内の通気路１２の開口全体を閉鎖しているが、閉鎖部１４ａは、複数の薄板が同一平面内に配置されたものとして形成し、各薄板が個別に開閉するものとしてもよい。また、弁体１４は、ゴム、軟質樹脂等の軟質材を用いて薄厚の円形平板状に形成され、弾性的に撓み変形して開口動作するものであるが、これに限られず、硬質材料等により形成して撓み変形することなく全体が上下移動して開口動作するように弁体ユニット１０内に収容、支持されるものでもよい。 In addition, in the valve body 14 of each of the above embodiments, the entire opening of the ventilation path 12 in the tubular main body 11 is closed by one closing portion 14a formed in a thin circular flat plate shape, but the closing portion is closed. 14a may be formed as if a plurality of thin plates are arranged in the same plane, and each thin plate opens and closes individually. Further, the valve body 14 is formed in a thin circular flat plate shape using a soft material such as rubber or a soft resin, and elastically bends and deforms to perform an opening operation, but the valve body 14 is not limited to this, and is not limited to this. It may be accommodated and supported in the valve body unit 10 so that the whole body moves up and down and opens without bending and deforming.

更に、上記第一実施形態の排気弁装置１において第２掛止部３２と蓋体５０の上面５１との間に介挿されるパッキングとして面パッキング３６が用いられているが、パッキングとしてＯリング等を使用してもよい。 Further, in the exhaust valve device 1 of the first embodiment, the surface packing 36 is used as the packing inserted between the second hook portion 32 and the upper surface 51 of the lid 50, but the O-ring or the like is used as the packing. May be used.

なお、上記各実施形態の排気弁装置１及び弁体設置装置２は、既存の蓋体５０に設置されるものについて説明したが、本発明は、排気弁装置１及び弁体設置装置２は、排水設備の設置当初から蓋体５０に設置する場合にも同様に適用することができる。 The exhaust valve device 1 and the valve body installation device 2 of each of the above embodiments have been described as being installed on the existing lid 50, but in the present invention, the exhaust valve device 1 and the valve body installation device 2 are The same can be applied to the case where the drainage facility is installed on the lid 50 from the beginning.

ところで、上記第一実施形態からは、以下の技術思想を把握することもできる。
（１）蓋体５０に形成された貫通孔に内挿される筒部と、該筒部の内部に配置された弁体１４と、前記筒部の一端から張り出して前記蓋体５０の表面側に掛止される掛止部と、前記筒部の他端側の外面に形成されたネジ部３４と、前記蓋体５０の裏面側で前記ネジ部３４に螺着され前記掛止部とともに該蓋体５０を挟持する固定ナット４１と、前記掛止部と前記蓋体５０との間に介挿されたパッキングと、を備えたことを特徴とする蓋体への排気弁固定装置。 By the way, the following technical ideas can be grasped from the first embodiment.
(1) A tubular portion inserted into a through hole formed in the lid 50, a valve body 14 arranged inside the tubular portion, and a valve body 14 projecting from one end of the tubular portion to the surface side of the lid 50. The hooking portion to be hooked, the screw portion 34 formed on the outer surface on the other end side of the tubular portion, and the lid which is screwed to the screw portion 34 on the back surface side of the lid body 50 together with the hooking portion. An exhaust valve fixing device to a lid body, comprising: a fixing nut 41 for sandwiching the body 50, and a packing inserted between the hooking portion and the lid body 50.

（２）蓋体５０に形成された貫通孔に筒部材が挿入されてその内部に通気路１２が形成され、開閉動作し前記通気路１２を閉鎖及び開放する弁体１４が前記筒部材内に配置され、前記筒部材の一端から張り出し形成された掛止部が前記蓋体５０の表面側の前記貫通孔の周縁に掛止され、前記筒部材の他端側が前記蓋体５０の裏面から突出し、
該筒部材の突出箇所の外面にネジ部３４が形成され、
前記ネジ部３４には、固定ナット４１が螺着されており、
前記掛止部と前記蓋体５０の表面との間にパッキングが設けられ、
前記掛止部と前記固定ナット４１とにより、前記蓋体５０及び前記パッキングが挟持され、
前記筒部材は、前記固定ナット４１を螺回動により取り外すことで前記蓋体５０に取り外し可能に固定されていることを特徴とする蓋体への排気弁固定構造。 (2) A tubular member is inserted into a through hole formed in the lid 50 to form a ventilation passage 12 inside the cylinder member, and a valve body 14 that opens and closes to close and open the ventilation passage 12 is inside the tubular member. A hooking portion that is arranged and overhangs from one end of the tubular member is hooked on the peripheral edge of the through hole on the front surface side of the lid 50, and the other end side of the tubular member projects from the back surface of the lid 50. ,
A screw portion 34 is formed on the outer surface of the protruding portion of the tubular member.
A fixing nut 41 is screwed to the screw portion 34.
Packing is provided between the hook and the surface of the lid 50.
The lid 50 and the packing are sandwiched between the hook and the fixing nut 41.
The exhaust valve fixing structure to the lid body is characterized in that the tubular member is removably fixed to the lid body 50 by removing the fixing nut 41 by screw rotation.

これらの技術思想は、覆い部２２が蓋体５０の上面５１から飛び出しているか否かに拘わらず、排気弁装置１を既存の蓋体５０の第２貫通孔５３に固定した後に、弁体１４の掃除などの必要時に、ユニット固定部材３０の固定ナット４１を取り外して排気弁装置１を蓋体５０から取り外すことができる、ものである。このため、掛止部と蓋体５０とが接着固定の場合には、弁体１４を掃除するときに排気弁装置１を蓋体５０ごと取り外し、蓋体５０ごと把持して弁体１４を掃除したり交換する作業を行なう必要があり大変であるが、これらの技術思想によれば、そのような手間を省くことができるし、弁体１４等を交換する際も、排気弁固定装置を取り外した蓋体５０は、そのまま再利用できる、という効果が得られる。 These technical ideas are based on the valve body 14 after fixing the exhaust valve device 1 to the second through hole 53 of the existing lid body 50 regardless of whether or not the covering portion 22 protrudes from the upper surface 51 of the lid body 50. The exhaust valve device 1 can be removed from the lid 50 by removing the fixing nut 41 of the unit fixing member 30 when necessary for cleaning or the like. Therefore, when the hooking portion and the lid 50 are adhesively fixed, when cleaning the valve body 14, the exhaust valve device 1 is removed together with the lid 50, and the lid 50 is gripped to clean the valve body 14. It is difficult to do the work of replacing or replacing, but according to these technical ideas, such trouble can be saved, and when replacing the valve body 14, etc., the exhaust valve fixing device is removed. The lid 50 can be reused as it is.

１排気弁装置３０ユニット固定部材
２弁体設置装置３１外装筒体
１０弁体ユニット３２第２掛止部
１１筒状本体３３第２固定部
１２通気路３４ネジ部
１３弁支持体３５段差部
１４弁体３６面パッキング
１５支持部４１固定ナット
１６支持体筒部５０蓋体
１７着座部５１上面
２１外側部材５２第１貫通孔
２２覆い部５２ａ周縁
２２ｂ側壁５３第２貫通孔
２２ｃ排気口５３ａ周縁
２３筒状部５４下面
２４第１固定部５８立上り管
２５第１掛止部Ｓ空隙
２６引掛け部 1 Exhaust valve device 30 Unit fixing member 2 Valve body installation device 31 Exterior cylinder body 10 Valve body unit 32 Second hooking part 11 Cylindrical body 33 Second fixing part 12 Vent passage 34 Screw part 13 Valve support 35 Step part 14 Valve body 36-sided packing 15 Support part 41 Fixing nut 16 Support cylinder part 50 Lid body 17 Seating part 51 Top surface 21 Outer member 52 First through hole 22 Covering part 52a Peripheral 22b Side wall 53 Second through hole 22c Exhaust port 53a Peripheral 23 Cylindrical part 54 Lower surface 24 First fixed part 58 Rising pipe 25 First hooking part S gap 26 Hooking part

Claims

排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に形成された貫通孔に内挿される、内部に通気路が形成された筒状本体と、
該筒状本体の外面から外方に張り出し、前記蓋体の上面における前記貫通孔の周縁に掛止される掛止部と、
該掛止部により掛止された姿勢で前記蓋体の下面より下方となる位置に設けられ、固定ナットで前記掛止部とともに前記蓋体を挟持すべく前記蓋体の下面側で前記固定ナットが螺着されるネジ部と、
前記通気路を閉鎖するとともに前記排水管路からの増加した圧力を受けて開口動作し該通気路を開放する弁体と、
前記弁体の上面側を覆い、側方に前記通気路を外部に連通させる排気口が設けられた覆い部と、を備えたことを特徴とする弁体ユニット。 A tubular body with a ventilation path inside, which is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that projects outward from the outer surface of the tubular body and is hooked on the peripheral edge of the through hole on the upper surface of the lid body.
The fixing nut is provided at a position below the lower surface of the lid in a posture of being hooked by the hook, and the fixing nut is provided on the lower surface side of the lid so as to sandwich the lid together with the hook with the fixing nut. And the screw part to which is screwed
A valve body that closes the ventilation passage and opens the ventilation passage by receiving an increased pressure from the drainage pipe passage.
A valve body unit including a covering portion that covers the upper surface side of the valve body and is provided with an exhaust port for communicating the ventilation path to the outside on the side.

弁体ユニットと、排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に形成された貫通孔に前記弁体ユニットを固定するためのユニット固定部材と、からなる排気弁装置であって、
前記ユニット固定部材は、
中空筒状に形成され、前記貫通孔に内挿されるとともに前記弁体ユニットを内部に配置可能な外装筒体と、
前記外装筒体の一端から外方に張り出し、前記蓋体の上面における前記貫通孔の周縁に掛止される掛止部と、
該掛止部により掛止された姿勢で前記蓋体の貫通孔に固定される固定部と、を備え、
前記固定部は、前記蓋体の下面側で前記外装筒体に形成されたネジ部に螺着されて前記蓋体を前記掛止部とともに挟持する固定ナットを有することを特徴とする排気弁装置。 An exhaust valve device comprising a valve body unit and a unit fixing member for fixing the valve body unit to a through hole formed in a lid body that closes an upper opening of a rising pipe connected to a drainage pipe.
The unit fixing member is
An exterior tubular body that is formed in a hollow tubular shape, is inserted into the through hole, and the valve body unit can be arranged inside.
A hooking portion that projects outward from one end of the outer cylinder and is hooked on the peripheral edge of the through hole on the upper surface of the lid.
A fixing portion fixed to the through hole of the lid body in a posture of being hooked by the hooking portion is provided.
The fixing portion has an exhaust valve device having a fixing nut that is screwed to a screw portion formed on the outer cylinder on the lower surface side of the lid and holds the lid together with the hooking portion. ..

排水管路に繋がる立上り管の上方開口部を塞ぐ蓋体に形成された貫通孔に内挿される筒状本体と、
前記蓋体の上面における前記貫通孔の周縁に掛止される掛止部と、
前記筒状本体の内部に形成された通気路を閉鎖するとともに前記排水管路からの増加した圧力を受けて開口動作する弁体と、
前記蓋体の下面側で、前記筒状本体設けられたネジ部に螺着され、前記掛止部とともに前記蓋体を挟持する固定ナットと、
を備えたことを特徴とする蓋体への排気弁固定装置。 A tubular body that is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that is hooked on the peripheral edge of the through hole on the upper surface of the lid body,
A valve body that closes the air passage formed inside the tubular body and opens in response to an increased pressure from the drainage pipe.
On the lower surface side of the lid, a fixing nut that is screwed to a screw portion provided on the tubular body and holds the lid together with the hooking portion.
An exhaust valve fixing device to the lid, which is characterized by being equipped with.

蓋体に形成された貫通孔に内挿される筒部と、該筒部の内部に配置された弁体と、前記筒部の一端から張り出して前記蓋体の表面側に掛止される掛止部と、前記筒部の他端側の外面に形成されたネジ部と、前記蓋体の裏面側で前記ネジ部に螺着され前記掛止部とともに該蓋体を挟持する固定ナットと、前記掛止部と前記蓋体との間に介挿されたパッキングと、を備えたことを特徴とする蓋体への排気弁固定装置。 A tubular portion inserted into a through hole formed in the lid, a valve body arranged inside the tubular portion, and a hook protruding from one end of the tubular portion and hooked on the surface side of the lid. A portion, a screw portion formed on the outer surface of the other end side of the cylinder portion, a fixing nut screwed to the screw portion on the back surface side of the lid body and sandwiching the lid body together with the hook portion, and the above. An exhaust valve fixing device to a lid, which comprises a packing inserted between the hook and the lid.

蓋体の貫通孔の周縁を挟持して請求項３または請求項４に記載の排気弁固定装置が固定されており、前記固定ナットを螺回動により取り外すことで前記蓋体から取り外し可能であることを特徴とする蓋体への排気弁固定構造。 The exhaust valve fixing device according to claim 3 or 4 is fixed by sandwiching the peripheral edge of the through hole of the lid body, and can be removed from the lid body by removing the fixing nut by screw rotation. The exhaust valve fixing structure to the lid is characterized by this.

蓋体に形成された貫通孔に筒部材が内挿されてその内部に通気路が形成され、開閉動作し前記通気路を閉鎖及び開放する弁体が前記筒部材内に配置され、前記筒部材の一端から張り出し形成された掛止部が前記蓋体の表面側の前記貫通孔の周縁に掛止され、前記筒部材の他端側が前記蓋体の裏面から突出し、
該筒部材の突出箇所の外面にネジ部が形成され、
前記ネジ部には、固定ナットが螺着されており、
前記掛止部と前記蓋体の表面との間にパッキングが設けられ、
前記掛止部と前記固定ナットとにより、前記蓋体及び前記パッキングが挟持され、
前記筒部材は、前記固定ナットを螺回動により取り外すことで前記蓋体に取り外し可能に固定されていることを特徴とする蓋体への排気弁固定構造。 A tubular member is inserted into a through hole formed in the lid to form a ventilation path inside, and a valve body that opens and closes to close and open the ventilation path is arranged in the tubular member. A hooking portion formed by projecting from one end of the lid is hooked on the peripheral edge of the through hole on the front surface side of the lid, and the other end of the tubular member projects from the back surface of the lid.
A threaded portion is formed on the outer surface of the protruding portion of the tubular member.
A fixing nut is screwed to the threaded portion.
Packing is provided between the hook and the surface of the lid.
The lid and the packing are sandwiched between the hook and the fixing nut.
The exhaust valve fixing structure to the lid body is characterized in that the tubular member is detachably fixed to the lid body by removing the fixing nut by screw rotation.