JP2023148147A - exhaust port structure - Google Patents

exhaust port structure Download PDF

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JP2023148147A
JP2023148147A JP2022056023A JP2022056023A JP2023148147A JP 2023148147 A JP2023148147 A JP 2023148147A JP 2022056023 A JP2022056023 A JP 2022056023A JP 2022056023 A JP2022056023 A JP 2022056023A JP 2023148147 A JP2023148147 A JP 2023148147A
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pipe
inner diameter
opening
pipe hood
hood
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知也 北村
Tomoya Kitamura
達也 石木
Tatsuya Ishiki
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Osaka Gas Co Ltd
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Osaka Gas Co Ltd
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Abstract

To provide an exhaust port structure capable of being easily attached/detached while appropriately securing airtightness and waterproofness from the inside.SOLUTION: An exhaust port structure comprises: a pipe hood 20 that can discharge exhaust air from the indoor side to the outdoor side, and has an outer diameter flange part 22 having an outer diameter Lb smaller than an opening diameter Lc and overlapping with an inner diameter portion 10c of an annular member 10 when viewed in a direction of an opening axis P of an opening Wa; and a mounting and fixing mechanism that in an arrangement posture in which the pipe hood 20 and an exhaust pipe Pi communicably connected to the pipe hood 20 are arranged in the opening Wa, with a sealing member S interposed between the annular member 10 and the pipe hood 20, can detachably fix the outer diameter flange part 22 of the pipe hood 20 to the inner diameter portion 10c of the annular member 10.SELECTED DRAWING: Figure 2

Description

本発明は、建物の外壁に形成された開口に設けられ、排気を排気用配管を介して屋内から屋外へ排出する排気口構造体に関する。 The present invention relates to an exhaust port structure that is provided in an opening formed in an outer wall of a building and discharges exhaust gas from indoors to outdoors via exhaust piping.

従来、室内から室外への排気（湿分を含む）を行う排気流路の出口に設けられる排気口構造体として、建物の外壁に設けられた開口に対し、建物の屋外から外壁にパイプフード等を固定する構造が一般的であった（特許文献１を参照）。具体的には、パイプフードが、屋外側で雨水等の内部への侵入を防止するフード部と開口の口径よりも大径の外径フランジ部と屋内側へ延びる接続部とを有する構成において、外径フランジ部が、外壁の外部から螺子等により固定されていた。このような排気口構造体では、例えば、建物の屋外からパイプフード等を外壁へビス等で固定すると共に、外壁とパイプフードとの間にシーリング剤を塗布することで気密性を確保する構造をとっている。 Conventionally, as an exhaust port structure installed at the outlet of an exhaust flow path that exhausts air (including moisture) from indoors to outdoors, a pipe hood, etc. is installed from the outside of the building to the outer wall of the building, compared to an opening provided in the outer wall of the building. A structure that fixes the is common (see Patent Document 1). Specifically, in a structure in which the pipe hood has a hood part that prevents rainwater etc. from entering the inside on the outdoor side, an outer diameter flange part having a larger diameter than the diameter of the opening, and a connecting part extending to the indoor side, The outer diameter flange portion was fixed from the outside of the outer wall with screws or the like. In such an exhaust port structure, for example, a pipe hood, etc. is fixed to the outside wall of the building with screws, etc., and a sealant is applied between the outside wall and the pipe hood to ensure airtightness. I'm taking it.

特開２００７－３０９５５７号公報Japanese Patent Application Publication No. 2007-309557

上述した構成の場合、設置後のメンテナンス時やパイプフードや排気等が通流する配管を取り替える際には、屋外側から作業する必要があり、特に、建物の２階以上等の高所設置の場合、足場を設置して作業をする必要があり、屋内側から作業できる構成が望まれていた。特に、衣類乾燥機における排気を行う排気流路では、パイプフード等に埃等が堆積し易く、長期に使用した場合に詰まり等が生じる虞があり、メンテナンス等を定期的に行う必要があるため、屋内側から作業できる構成とすることが好ましい。
しかしながら、メンテナンス時等に屋内側からパイプフード等を取り付ける場合、外壁に形成された開口に対し、パイプフード及び配管を配置した状態でパイプフードを固定する必要があるため、屋内側からパイプフードを固定することは、開口内での作業スペースが狭いこと尚から難しかった。また、屋内側からパイプフードの固定が難しいことから、気密性及び防水性を適切に確保しながら、設置を行うことも難しい状況であった。 In the case of the above-mentioned configuration, when performing maintenance after installation or replacing pipes through which pipe hoods and exhaust gas flow, it is necessary to work from the outside. In such cases, it is necessary to set up scaffolding to carry out the work, and a configuration that allows work to be done from indoors was desired. In particular, in the exhaust flow path of a clothes dryer, dust etc. tend to accumulate on the pipe hood, etc., and there is a risk of clogging when used for a long period of time, so maintenance etc. must be performed regularly. , it is preferable to have a configuration that allows work to be done from the indoor side.
However, when installing a pipe hood etc. from the indoor side during maintenance etc., it is necessary to fix the pipe hood with the pipe hood and piping placed in the opening formed in the outer wall, so the pipe hood must be installed from the indoor side. Fixing it was difficult due to the narrow working space within the opening. Furthermore, since it was difficult to secure the pipe hood from the indoor side, it was also difficult to install it while ensuring appropriate airtightness and waterproofness.

本発明は、上述の課題に鑑みてなされたものであり、その目的は、メンテナンス時等において、屋内側から気密性・防水性を適切に確保しながら容易に着脱可能な排気口構造体を提供することにある。 The present invention has been made in view of the above-mentioned problems, and its purpose is to provide an exhaust port structure that can be easily attached and detached from the indoor side while appropriately ensuring airtightness and waterproofness during maintenance etc. It's about doing.

上記目的を達成するための排気口構造体は、
建物の外壁に形成された開口に設けられ、排気を排気用配管を介して屋内から屋外へ排出する排気口構造体であって、その特徴構成は、
屋外側から前記開口の周りの外壁面に取り付け可能であって、内径部位が前記開口の開口径よりも小さく外径部位が前記開口径よりも大きい環状部材と、
屋内側から排気を屋外側へ排出できると共に、前記開口径よりも外径が小さく且つ前記開口の開口軸方向視で前記環状部材の前記内径部位と重畳する外径フランジ部を有するパイプフードと、
前記開口に前記パイプフード及び当該パイプフードに連通接続する前記排気用配管を配置した配置姿勢において、前記環状部材と前記パイプフードとの間にシール部材を介在させた状態で、前記環状部材の前記内径部位に対して前記パイプフードの前記外径フランジ部を着脱自在に固定可能な取付固定機構を備えている点にある。 The exhaust port structure to achieve the above purpose is
An exhaust port structure is provided in an opening formed in the outer wall of a building and discharges exhaust air from indoors to outdoors via exhaust piping, and its characteristic configuration is as follows:
an annular member that can be attached to an outer wall surface around the opening from the outdoor side, and has an inner diameter portion smaller than the opening diameter of the opening and an outer diameter portion larger than the opening diameter;
a pipe hood capable of discharging exhaust gas from the indoor side to the outdoor side, and having an outer diameter flange portion having an outer diameter smaller than the opening diameter and overlapping with the inner diameter portion of the annular member when viewed in the opening axis direction of the opening;
In the arrangement position in which the pipe hood and the exhaust pipe connected to the pipe hood are disposed in the opening, the annular member has a sealing member interposed between the annular member and the pipe hood. The pipe hood is provided with an attachment and fixing mechanism that can detachably fix the outer diameter flange portion of the pipe hood to the inner diameter portion.

上記特徴構成によれば、開口にパイプフード及び当該パイプフードに連通接続する排気用配管を配置した配置姿勢において、環状部材の内径部位に対してパイプフードの外径フランジ部を着脱自在に固定可能な取付固定機構を備えているから、当該取付固定機構により、パイプフード及び排気用配管を開口に配置した配置姿勢であって、開口のスペースが狭い場合であっても、パイプフードを外壁外側の環状部材に対して屋内側から位置決め固定することができる。
更に、取付固定部材によるパイプフードの位置決め固定は、環状部材とパイプフードとの間にシール部材を介在させた状態で実行できるから、屋内側から気密性・防水性を適切に確保しながらの着脱を実現できる。
以上より、メンテナンス時等において、屋内側から気密性・防水性を適切に確保しながら容易に着脱可能な排気口構造体を実現できる。
尚、本発明において、パイプフードと排気用配管は一体であるものも含むものとする。 According to the above-mentioned characteristic structure, the outer diameter flange part of the pipe hood can be detachably fixed to the inner diameter part of the annular member in the arrangement position in which the pipe hood and the exhaust pipe connected to the pipe hood are disposed in the opening. This mounting and fixing mechanism allows the pipe hood to be placed outside the exterior wall even if the pipe hood and exhaust piping are arranged in an opening and the opening space is narrow. It can be positioned and fixed to the annular member from the indoor side.
Furthermore, positioning and fixing of the pipe hood using the mounting and fixing member can be performed with a sealing member interposed between the annular member and the pipe hood, so it can be attached and detached from the indoor side while properly ensuring airtightness and waterproofness. can be realized.
As described above, it is possible to realize an exhaust port structure that can be easily attached and detached while appropriately ensuring airtightness and waterproofness from the indoor side during maintenance and the like.
In addition, in the present invention, the pipe hood and the exhaust pipe may be integrated.

排気口構造体の更なる特徴構成は、前記取付固定機構は、
一端側が前記外壁の屋内側に支持されると共に、他端側に前記パイプフードの前記外径フランジ部に形成された挿通孔を介して、前記環状部材の前記内径部位と螺合により固定される螺子先端部を有する長尺状固定部材であり、
前記長尺状固定部材の前記他端側には、前記螺子先端部の前記内径部位との固定状態において、前記パイプフードの前記外径フランジ部と当接する当接部が設けられている点にある。 A further characteristic configuration of the exhaust port structure is that the mounting and fixing mechanism includes:
One end side is supported on the indoor side of the outer wall, and the other end side is fixed by screwing to the inner diameter portion of the annular member through an insertion hole formed in the outer diameter flange portion of the pipe hood. A long fixing member having a screw tip,
The other end of the elongated fixing member is provided with a contact portion that comes into contact with the outer diameter flange portion of the pipe hood when the screw tip portion is fixed to the inner diameter portion. be.

上記特徴構成によれば、まずもって、取付固定機構は、一端側が外壁の屋内側に支持されると共に、他端側にパイプフードの外径フランジ部に形成された挿通孔を介して、環状部材の内径部位と螺合により固定される螺子先端部を有する長尺状固定部材であるから、パイプフード及び排気用配管を開口に配置した配置姿勢であって、開口のスペースが狭い場合であっても、当該狭いスペースに長尺状固定部材を挿通する形態で、長尺状固定部材の先端の螺子先端部を環状部材の内径部位に螺合することができる。
更に、長尺状固定部材の他端側には、螺子先端部の内径部位との固定状態において、パイプフードの外径フランジ部と当接する当接部が設けられているから、押圧部によりパイプフードの外径フランジ部を環状部材の内径部位へ押圧する形態で、パイプフードを外壁の外側に設けられる環状部材の内径部位へ適切に固定することができる。 According to the characteristic structure described above, first of all, the mounting and fixing mechanism has one end side supported on the indoor side of the outer wall, and the other end side is connected to the annular member through the insertion hole formed in the outer diameter flange portion of the pipe hood. Since it is a long fixing member having a screw tip that is fixed by screwing with the inner diameter portion of the Also, by inserting the elongated fixing member into the narrow space, the screw tip at the tip of the elongated fixing member can be screwed into the inner diameter portion of the annular member.
Furthermore, since the other end of the elongated fixing member is provided with an abutting part that comes into contact with the outer diameter flange part of the pipe hood when it is fixed with the inner diameter part of the screw tip, the pipe can be pressed by the pressing part. By pressing the outer diameter flange portion of the hood against the inner diameter portion of the annular member, the pipe hood can be appropriately fixed to the inner diameter portion of the annular member provided outside the outer wall.

排気口構造体の更なる特徴構成は、前記取付固定機構は、
前記環状部材の前記内径部位と前記パイプフードの前記外径フランジ部との間に介在される前記シール部材としての熱可塑性シーリング剤と、外径環状部位が前記外壁の屋内側に固定されると共に内径環状部位が前記パイプフード又は前記排気用配管の室内側の外周を挟持して固定する室内化粧部材とから構成されている点にある。 A further characteristic configuration of the exhaust port structure is that the mounting and fixing mechanism includes:
a thermoplastic sealant as the sealing member interposed between the inner diameter portion of the annular member and the outer diameter flange portion of the pipe hood; and the outer diameter annular portion is fixed to the indoor side of the outer wall. The inner diameter annular portion is constituted by the pipe hood or the indoor decorative member which clamps and fixes the outer periphery of the indoor side of the exhaust pipe.

上記特徴構成によれば、外壁内部に形成される排気流路の終端としてのパイプフードは、加熱されて柔軟性を持った熱可塑性シーリング剤が自然冷却により硬化することで固定でき、外壁内部に形成される排気流路の基端としての排気用配管は、その外周を外壁の室内側で内径環状部位により挟持固定できるから、パイプフード及び排気用配管を開口に配置した配置姿勢であって、開口のスペースが狭い場合であっても、当該狭いスペースで作業をすることなく、パイプフード及び排気用配管を良好に固定できる。 According to the above characteristic configuration, the pipe hood, which serves as the end of the exhaust flow path formed inside the outer wall, can be fixed by heating the flexible thermoplastic sealant and hardening it by natural cooling. Since the exhaust pipe as the base end of the exhaust flow path to be formed can have its outer periphery clamped and fixed by the inner diameter annular portion on the indoor side of the outer wall, the pipe hood and the exhaust pipe are arranged in the opening, Even if the opening space is narrow, the pipe hood and exhaust piping can be fixed well without having to work in the narrow space.

排気口構造体の更なる特徴構成は、前記取付固定機構は、
前記環状部材への前記パイプフードの装着姿勢において、前記環状部材の前記内径部位に固定され当該内径部位から前記パイプフードへ向けて延びると共に弾性変形自在な延設基部と、当該延設基部の延設方向に交差する交差方向へ突出して前記パイプフードの前記外径フランジ部に係止可能な爪部とを有する係止部材とを、前記内径部位の周方向で間隔を隔てて複数備えて成る点にある。 A further characteristic configuration of the exhaust port structure is that the mounting and fixing mechanism includes:
In the mounting posture of the pipe hood on the annular member, an extension base fixed to the inner diameter portion of the annular member and extending from the inner diameter region toward the pipe hood and elastically deformable; A plurality of locking members each having a claw portion that protrudes in an intersecting direction intersecting the installation direction and that can be locked to the outer diameter flange portion of the pipe hood are provided at intervals in the circumferential direction of the inner diameter portion. At the point.

上記特徴構成によれば、パイプフードと排気用配管を開口の開口軸に沿って挿入することで、パイプフードの外径フランジ部の周方向における複数箇所を、係止部材の爪部により係止することができるから、パイプフード及び排気用配管を開口に配置した配置姿勢であって、開口のスペースが狭い場合であっても、当該狭いスペースで作業をすることなく、パイプフード及び排気用配管を良好に固定できる。 According to the above characteristic configuration, by inserting the pipe hood and the exhaust pipe along the opening axis of the opening, multiple locations in the circumferential direction of the outer diameter flange portion of the pipe hood are locked by the claws of the locking member. Even if the pipe hood and exhaust piping are arranged in an opening and the opening space is narrow, the pipe hood and exhaust piping can be removed without having to work in the narrow space. can be fixed well.

排気口構造体の更なる特徴構成は、前記取付固定機構は、
前記環状部材の前記内径部位から前記パイプフードへ向けて延びる延設基部の延設方向に交差する交差方向へ付勢され、且つ前記パイプフードを前記環状部材へ近接する側へ移動させたときに前記外径フランジ部と接触して引退姿勢となると共に前記パイプフードの前記外径フランジ部が前記環状部材の前記内径部位に当接しているときに前記外径フランジ部と当接する突出姿勢を維持するラッチを、前記内径部位の周方向で間隔を隔てて複数備えて成る点にある。 A further characteristic configuration of the exhaust port structure is that the mounting and fixing mechanism includes:
When the annular member is biased in a cross direction that intersects the extension direction of the extension base extending from the inner diameter portion toward the pipe hood, and the pipe hood is moved toward the annular member. When the pipe hood comes into contact with the outer diameter flange portion and assumes a retracted position, the outer diameter flange portion of the pipe hood is in contact with the inner diameter portion of the annular member and maintains a protruding posture where it contacts the outer diameter flange portion. A plurality of latches are provided at intervals in the circumferential direction of the inner diameter portion.

上記特徴構成によれば、パイプフードと排気用配管を開口の開口軸に沿って挿入することで、ラッチが引退姿勢を介して突出姿勢となり、パイプフードの外径フランジ部の周方向における複数箇所に当接して係止するから、パイプフード及び排気用配管を開口に設置するときに、開口のスペースが狭い場合であっても、当該狭いスペースで作業をすることなく、パイプフード及び排気用配管を良好に固定できる。 According to the characteristic configuration described above, by inserting the pipe hood and the exhaust pipe along the opening axis of the opening, the latch changes from the retracted position to the protruding position, and at multiple locations in the circumferential direction of the outer diameter flange portion of the pipe hood. Since the pipe hood and exhaust piping are locked in contact with the opening, even if the opening space is narrow, the pipe hood and exhaust piping can be installed without having to work in the narrow space. can be fixed well.

外壁へ装着する前の第１実施形態に係る排気口構造体の断面図である。FIG. 2 is a sectional view of the exhaust port structure according to the first embodiment before being attached to an outer wall. 外壁へ装着した後の第１実施形態に係る排気口構造体の断面図である。FIG. 3 is a cross-sectional view of the exhaust port structure according to the first embodiment after being attached to an outer wall. 第２実施形態に係る排気口構造体の断面図である。FIG. 7 is a sectional view of an exhaust port structure according to a second embodiment. 第３実施形態に係る排気口構造体の断面図である。It is a sectional view of the exhaust port structure concerning a 3rd embodiment. 第４実施形態に係る排気口構造体の断面図である。It is a sectional view of the exhaust port structure concerning a 4th embodiment.

本発明の実施形態に係る排気口構造体１００は、メンテナンス時等において、屋内側から気密性・防水性を適切に確保しながら容易に着脱可能なものに関する。
以下、図面に基づいて排気口構造体１００の実施形態を説明する。 The exhaust port structure 100 according to the embodiment of the present invention relates to one that can be easily attached and detached from the indoor side while appropriately ensuring airtightness and waterproofness during maintenance and the like.
Hereinafter, embodiments of the exhaust port structure 100 will be described based on the drawings.

〔第１実施形態〕
図１又は図２に示すように、排気口構造体１００は、建物の外壁Ｗに形成された開口Ｗａに設けられ、排気を排気用配管Ｐｉを介して屋内（図１、２で、外壁Ｗの右側）から屋外（図１、２で、外壁Ｗの左側）へ排出するものである。
当該排気口構造体１００は、屋外側から開口Ｗａの周りの外壁面Ｗｂに取り付け可能であって、内径部位１０ｃの内径Ｌａが開口Ｗａの開口径Ｌｃよりも小さく外径部位１０ｂの外径Ｌｄが開口径Ｌｃよりも大きい環状部材１０と、屋内側から排気を屋外側へ排出できると共に、開口Ｗａの開口径Ｌｃよりも外径Ｌｂが小さく且つ開口Ｗａの開口軸Ｐに沿う方向視で環状部材１０の内径部位１０ｃと重畳する外径フランジ部２２を有するパイプフード２０と、開口Ｗａにパイプフード２０及び当該パイプフード２０に連通接続する円筒状の排気用配管Ｐｉを配置した配置姿勢（図２に示す姿勢）において、環状部材１０とパイプフード２０との間（内径部位１０ｃと外径フランジ部２２との間）にシール部材Ｓを介在させた状態で、環状部材１０の内径部位１０ｃに対してパイプフード２０の外径フランジ部２２を着脱自在に固定可能な取付固定機構を備えている。 [First embodiment]
As shown in FIG. 1 or 2, the exhaust port structure 100 is provided in an opening Wa formed in an outer wall W of a building, and directs exhaust air indoors (in (the right side of the outer wall W) to the outdoors (the left side of the outer wall W in Figures 1 and 2).
The exhaust port structure 100 can be attached to the outer wall surface Wb around the opening Wa from the outdoor side, and the inner diameter La of the inner diameter portion 10c is smaller than the opening diameter Lc of the opening Wa and the outer diameter Ld of the outer diameter portion 10b. The annular member 10 has a larger opening diameter Lc than the opening diameter Lc, which can discharge exhaust gas from the indoor side to the outdoor side, has an outer diameter Lb smaller than the opening diameter Lc of the opening Wa, and has an annular shape when viewed in the direction along the opening axis P of the opening Wa. An arrangement posture in which a pipe hood 20 having an outer diameter flange portion 22 that overlaps with the inner diameter portion 10c of the member 10, and a cylindrical exhaust pipe Pi that is communicatively connected to the pipe hood 20 and the pipe hood 20 are arranged in the opening Wa (Fig. 2), with the seal member S interposed between the annular member 10 and the pipe hood 20 (between the inner diameter portion 10c and the outer diameter flange portion 22), the inner diameter portion 10c of the annular member 10 is On the other hand, an attachment and fixing mechanism is provided which can detachably fix the outer diameter flange portion 22 of the pipe hood 20.

当該排気口構造体１００は、特にメンテナンス時等において、屋外側からの作業を必要とせず、屋内側からのみの操作にて着脱操作を実施できるものであり、特に、２階以上の高所に開口Ｗａが形成される場合に有効な技術である。ただし、環状部材１０については、予め外壁Ｗに装着しておく必要がある。
図１、２に示すように、環状部材１０は、開口軸Ｐに沿う方向視で中心部が円形に開口した円環状であり、その外径部位１０ｂが第１螺子Ｎｏ１により外壁Ｗの屋外側の面Ｗｂに対して螺合固定されている。更に、環状部材１０には、屋内側に雄螺子部位Ｏｎが形成されると共に内径部位１０ｃに対して軸心周りでの回転が禁止された状態で固定される第２螺子Ｎｏ２が設けられている。環状部材１０の内径部位１０ｃの内側には第１円孔１０ａが形成されており、当該第１円孔１０ａには、図２に示す配置姿勢において、パイプフード２０のフード部２１が、屋内側から屋外側へ挿通された状態で配置される。 The exhaust port structure 100 can be installed and removed only from the indoor side without requiring any work from the outdoor side, especially during maintenance. This is an effective technique when an opening Wa is formed. However, the annular member 10 needs to be attached to the outer wall W in advance.
As shown in FIGS. 1 and 2, the annular member 10 has an annular shape with a circular opening at the center when viewed in a direction along the opening axis P, and the outer diameter portion 10b is connected to the outdoor side of the outer wall W by the first screw No. 1. is screwed and fixed to the surface Wb. Further, the annular member 10 is provided with a male screw portion On on the indoor side and a second screw No. 2 which is fixed to the inner diameter portion 10c in a state where rotation around the axis is prohibited. . A first circular hole 10a is formed inside the inner diameter portion 10c of the annular member 10, and the hood part 21 of the pipe hood 20 is placed in the first circular hole 10a on the indoor side in the arrangement posture shown in FIG. It is placed in a state where it is inserted from the outside to the outside.

パイプフード２０は、図２に示す配置姿勢において、上述した外径フランジ部２２を挟んで、屋内側から屋外側へ延びて鉛直方向で上方側を覆うフード部２１と、屋外側から屋内側へ延びて排気用配管Ｐｉが接続固定される円筒状の接続部２３が設けられている。尚、当該接続部２３は、開口軸Ｐに沿う方向で、排気用配管Ｐｉとその一部が重畳すると共に両者の間にシール材（図示せず）等を充填する形態で、排気用配管Ｐｉと固定される。
また、外径フランジ部２２には、環状部材１０に設けられる第２螺子Ｎｏ２の雄螺子部位Ｏｎを挿通可能な挿通孔２２ａが設けられている。 In the arrangement position shown in FIG. 2, the pipe hood 20 includes a hood part 21 that extends from the indoor side to the outdoor side and covers the upper side in the vertical direction, sandwiching the outer diameter flange part 22 described above, and a hood part 21 that extends from the indoor side to the outdoor side and covers the upper side in the vertical direction, and a hood part 21 that extends from the outdoor side to the indoor side. A cylindrical connecting portion 23 is provided which extends and to which the exhaust pipe Pi is connected and fixed. The connecting portion 23 has a configuration in which the exhaust pipe Pi and a portion thereof overlap in the direction along the opening axis P, and a sealing material (not shown) or the like is filled between the two. is fixed.
Further, the outer diameter flange portion 22 is provided with an insertion hole 22a through which the male screw portion On of the second screw No. 2 provided on the annular member 10 can be inserted.

上述したパイプフード２０及び排気用配管Ｐｉを開口Ｗａに配置する配置姿勢においては、パイプフード２０及び排気用配管Ｐｉと開口Ｗａとの間の隙間が小さく、十分な作業スペースを取りにくい。
そこで、当該第１実施形態に係る排気口構造体１００では、取付固定機構として、一端側が外壁Ｗの屋内側に支持されると共に、他端側にパイプフード２０の外径フランジ部２２に形成された挿通孔２２ａを介して、環状部材１０の内径部位１０ｃに固定される第２螺子Ｎｏ２の雄螺子部位Ｏｎに螺合する螺子先端部Ｔを有する長尺状固定部材Ｊを備える。説明を追加すると、長尺状固定部材Ｊの螺子先端部Ｔは、内周に雌螺子が切られた雌螺子部位Ｍｎを有し、当該雌螺子部位Ｍｎに第２螺子Ｎｏ２の雄螺子部位Ｏｎが螺合可能に構成されている。当該長尺状固定部材Ｊは、図１、２に示すように、開口軸Ｐの軸心周りで、間隔を隔てて複数（当該実施形態では２つ）設けられている。ちなみに、当該長尺状固定部材Ｊは、開口軸Ｐの軸心周りで、等間隔に設けられることが好ましい。 In the above-described arrangement posture in which the pipe hood 20 and the exhaust pipe Pi are arranged in the opening Wa, the gap between the pipe hood 20 and the exhaust pipe Pi and the opening Wa is small, making it difficult to take up a sufficient working space.
Therefore, in the exhaust port structure 100 according to the first embodiment, one end side is supported on the indoor side of the outer wall W, and the other end side is formed on the outer diameter flange portion 22 of the pipe hood 20 as an attachment and fixing mechanism. The fixing member J is provided with a long fixing member J having a screw tip T that is screwed into the male screw portion On of the second screw No. 2 that is fixed to the inner diameter portion 10c of the annular member 10 through the insertion hole 22a. To add an explanation, the screw tip T of the elongated fixing member J has a female screw portion Mn with a female screw cut on the inner periphery, and a male screw portion On of the second screw No. 2 is attached to the female screw portion Mn. are configured so that they can be screwed together. As shown in FIGS. 1 and 2, a plurality of elongated fixing members J (two in this embodiment) are provided at intervals around the axis of the opening axis P. Incidentally, it is preferable that the long fixing members J are provided at equal intervals around the axis of the opening axis P.

長尺状固定部材Ｊの他端側端部には、雌螺子部位Ｍｎに第２螺子Ｎｏ２の雄螺子部位Ｏｎが螺合して締め付けた固定状態にあるときに、パイプフード２０の外径フランジ部２２と当接する当接部Ｔａが設けられている。当該構成により、雌螺子部位Ｍｎに第２螺子Ｎｏ２の雄螺子部位Ｏｎの螺合により、パイプフード２０が環状部材１０へ装着され、螺合を解除することにより、パイプフード２０が環状部材１０から脱離される。 The other end of the elongated fixing member J has an outer diameter flange of the pipe hood 20 when the male thread part On of the second screw No. 2 is screwed into the female thread part Mn and is in a tightened state. A contact portion Ta that comes into contact with the portion 22 is provided. With this configuration, the pipe hood 20 is attached to the annular member 10 by threading the male thread part On of the second screw No. 2 into the female thread part Mn, and the pipe hood 20 is removed from the annular member 10 by releasing the threading. Will be detached.

長尺状固定部材Ｊの一端側には、ドライバ等の治具により軸回りで回転操作可能な螺子頭Ｎｉ２が形成されており、当該螺子頭Ｎｉ２を回転操作することで、雌螺子部位Ｍｎに第２螺子Ｎｏ２の雄螺子部位Ｏｎを螺合させる。
当該長尺状固定部材Ｊは、外壁Ｗの屋内側に内壁螺子部Ｎｉ１にて固定される化粧板３０を挿通する形で設けられている。即ち、当該構成においては、作業者は、開口Ｗａの狭い空間で作業することなく、外壁Ｗの屋内側から、長尺状固定部材Ｊの螺子頭Ｎｉ２を操作するのみで、パイプフード２０の外壁Ｗの屋外側に設けられる環状部材１０に対する着脱を実現できる。
尚、化粧板３０には、排気用配管Ｐｉを挿通する第２円孔３０ａが設けられており、排気用配管Ｐｉの一端側を支持する。
これまで説明してきた構成を採用することにより、外壁Ｗに環状部材１０を取り付けた状態で、屋内側からパイプフード２０等を良好に取り換えることができる。 A screw head Ni2 is formed on one end of the elongated fixing member J, and can be rotated around the axis using a jig such as a screwdriver.By rotating the screw head Ni2, the female screw portion Mn can be rotated. Screw together the male screw portion On of the second screw No. 2.
The elongated fixing member J is provided on the indoor side of the outer wall W so as to pass through a decorative board 30 fixed to the inner wall screw portion Ni1. That is, in this configuration, the worker can fix the outer wall of the pipe hood 20 by simply operating the screw head Ni2 of the elongated fixing member J from the indoor side of the outer wall W, without having to work in the narrow space of the opening Wa. Attachment and detachment to and from the annular member 10 provided on the outdoor side of W can be realized.
The decorative board 30 is provided with a second circular hole 30a through which the exhaust pipe Pi is inserted, and supports one end of the exhaust pipe Pi.
By employing the configuration described so far, the pipe hood 20 and the like can be conveniently replaced from the indoor side with the annular member 10 attached to the outer wall W.

〔第２実施形態〕
当該第２実施形態に係る排気口構造体１００は、第１実施形態に比して取付固定機構の構成のみが異なる。以下の説明では、取付固定機構に係る構成に重点をおいて説明し、第１実施形態と同一の構成については、第１実施形態と同一の符号を付してその説明を割愛することがある。 [Second embodiment]
The exhaust port structure 100 according to the second embodiment differs from the first embodiment only in the configuration of the attachment and fixing mechanism. In the following explanation, emphasis will be placed on the configuration related to the attachment and fixing mechanism, and the same configuration as in the first embodiment may be given the same reference numeral as in the first embodiment, and the explanation thereof may be omitted. .

図３に示すように、当該第２実施形態に係る排気口構造体１００においては、取付固定機構は、環状部材１０の内径部位１０ｃとパイプフード２０の外径フランジ部２２との間に介在されるシール部材Ｓとしての熱可塑性シーリング剤と、外径環状部位ＢＰｄが外壁Ｗの屋内側に固定されると共に内径環状部位ＢＰａがパイプフード２０又は排気用配管Ｐｉ（当該第２実施形態では排気用配管Ｐｉ）の室内側の外周を挟持して固定する室内化粧部材ＢＰとから構成されている。
即ち、当該第２実施形態においては、パイプフード２０の屋外側は、外径フランジ部２２に加熱され塗布された熱可塑性シーリング剤（シール部材Ｓ）が、環状部材１０の内径部位１０ｃに付着し、自然冷却されて硬化することにより固定される。
一方、パイプフード２０の屋内側は、室内化粧部材ＢＰにより固定される。当該室内化粧部材ＢＰは、まず、円環状の内径環状部位ＢＰａを排気用配管Ｐｉの外周に沿って配設した状態で、当該内径環状部位ＢＰａの環周方向の一端及び他端から開口軸Ｐの軸径方向へ延設される一対の鍔部ＢＰｃを、ボルトＢにより締め付ける形態で、内径環状部位ＢＰａにて排気用配管Ｐｉの外周を挟持する。
更に、室内化粧部材ＢＰの円環状の外径環状部位ＢＰｄが、化粧板３０の板面に対して第３螺子Ｎｉ３により固定されることで、パイプフード２０及び排気用配管Ｐｉの屋内側が固定されることになる。
即ち、当該第２実施形態に係る排気口構造体１００においては、第１実施形態で示した長尺状固定部材Ｊに係る構成は設けられない。 As shown in FIG. 3, in the exhaust port structure 100 according to the second embodiment, the attachment and fixing mechanism is interposed between the inner diameter portion 10c of the annular member 10 and the outer diameter flange portion 22 of the pipe hood 20. The thermoplastic sealing agent as the sealing member S, the outer diameter annular portion BPd is fixed to the indoor side of the outer wall W, and the inner diameter annular portion BPa is attached to the pipe hood 20 or the exhaust pipe Pi (in the second embodiment, the exhaust pipe Pi). and an indoor decorative member BP that clamps and fixes the outer periphery of the indoor side of the pipe Pi).
That is, in the second embodiment, on the outdoor side of the pipe hood 20, the thermoplastic sealant (sealing member S) heated and applied to the outer diameter flange portion 22 adheres to the inner diameter portion 10c of the annular member 10. , it is fixed by being naturally cooled and hardened.
On the other hand, the indoor side of the pipe hood 20 is fixed by an indoor decorative member BP. The indoor decorative member BP first has an annular inner diameter annular portion BPa disposed along the outer periphery of the exhaust pipe Pi, and an opening axis P from one end and the other end in the circumferential direction of the inner diameter annular portion BPa. A pair of flanges BPc extending in the axial radial direction are tightened by bolts B, and the outer periphery of the exhaust pipe Pi is held between the inner diameter annular portion BPa.
Furthermore, by fixing the annular outer diameter portion BPd of the interior decorative member BP to the plate surface of the decorative board 30 with the third screw Ni3, the indoor side of the pipe hood 20 and the exhaust pipe Pi are fixed. That will happen.
That is, in the exhaust port structure 100 according to the second embodiment, the configuration related to the elongated fixing member J shown in the first embodiment is not provided.

〔第３実施形態〕
当該第３実施形態に係る排気口構造体１００は、第２実施形態に比して取付固定機構の構成のみが異なる。以下の説明では、取付固定機構に係る構成に重点をおいて説明し、第２実施形態と同一の構成については、第２実施形態と同一の符号を付してその説明を割愛することがある。
尚、当該第３実施形態に係る排気口構造体１００では、パイプフード２０及び排気用配管Ｐｉの屋内側については、第２実施形態と同様に室内化粧部材ＢＰにて固定されている。また、当該第３実施形態でも、取付固定機構としての長尺状固定部材Ｊは設けられない。 [Third embodiment]
The exhaust port structure 100 according to the third embodiment differs from the second embodiment only in the configuration of the attachment and fixing mechanism. In the following description, emphasis will be placed on the configuration related to the attachment and fixing mechanism, and the same components as in the second embodiment may be given the same reference numerals as in the second embodiment, and the description thereof may be omitted. .
In addition, in the exhaust port structure 100 according to the third embodiment, the indoor side of the pipe hood 20 and the exhaust pipe Pi are fixed with the indoor decorative member BP similarly to the second embodiment. Further, in the third embodiment as well, the elongated fixing member J as the attachment and fixing mechanism is not provided.

図４に示すように、当該第３実施形態に係る排気口構造体１００においては、取付固定機構は、環状部材１０へのパイプフード２０の装着姿勢において、環状部材１０の内径部位１０ｃに固定され当該内径部位１０ｃからパイプフード２０の外径フランジ部２２（屋内側）へ向けて延びると共に弾性変形自在な延設基部Ｎａ２と、当該延設基部Ｎａ２の延設方向（図４で開口軸Ｐに沿う方向）に交差する交差方向（図４で開口軸Ｐの軸径方向）へ突出してパイプフード２０の外径フランジ部２２に係止可能な爪部Ｎａ３とを有する係止部材Ｎａを、内径部位１０ｃの周方向で間隔を隔てて複数（当該第３実施形態では２つ）備えている。ちなみに、係止部材Ｎａは、内径部位１０ｃの周方向において等間隔で設けられることが好ましい。
説明を追加すると、延設基部Ｎａ２には、環状部材１０の内径部位１０ｃに当接する当接部Ｎａ１が設けられ、当該当接部Ｎａ１は、第２螺子Ｎｏ２の雄螺子部ＮＯ２ａが環状部材１０の内径部位１０ｃに螺合する形で、内径部位１０ｃに固定される。 As shown in FIG. 4, in the exhaust port structure 100 according to the third embodiment, the attachment and fixing mechanism is fixed to the inner diameter portion 10c of the annular member 10 when the pipe hood 20 is attached to the annular member 10. The extension base Na2 extends from the inner diameter portion 10c toward the outer diameter flange portion 22 (indoor side) of the pipe hood 20 and is elastically deformable, and the extension direction of the extension base Na2 (in the opening axis P in FIG. 4). A locking member Na having a claw portion Na3 that protrudes in the intersecting direction (in the radial direction of the opening axis P in FIG. A plurality (two in the third embodiment) are provided at intervals in the circumferential direction of the portion 10c. Incidentally, it is preferable that the locking members Na are provided at equal intervals in the circumferential direction of the inner diameter portion 10c.
To add an explanation, the extending base portion Na2 is provided with a contact portion Na1 that contacts the inner diameter portion 10c of the annular member 10, and in the abutting portion Na1, the male thread portion NO2a of the second screw No. 2 is connected to the annular member 10. It is fixed to the inner diameter part 10c in a form that is screwed into the inner diameter part 10c.

尚、当接部Ｎａ１には、屋内側から屋外側にかけて凹欠する凹欠部Ｎａ４が形成され、当該凹欠部Ｎａ４に、第２螺子Ｎｏ２の頭部が位置する形で、第２螺子Ｎｏ２が配置される。
当該構成を採用することにより、当接部Ｎａ１とパイプフード２０の外径フランジ部２２との間にシール部材Ｓを介在させることで、両者の間の気密性を保っている。 In addition, a recessed part Na4 is formed in the contact part Na1 from the indoor side to the outdoor side, and the head of the second screw No. 2 is located in the recessed part Na4. is placed.
By employing this configuration, the seal member S is interposed between the contact portion Na1 and the outer diameter flange portion 22 of the pipe hood 20, thereby maintaining airtightness between the two.

〔第４実施形態〕
当該第４実施形態に係る排気口構造体１００は、第２実施形態に比して取付固定機構の構成のみが異なる。以下の説明では、取付固定機構に係る構成に重点をおいて説明し、第２実施形態と同一の構成については、第２実施形態と同一の符号を付してその説明を割愛することがある。
尚、当該第４実施形態に係る排気口構造体１００では、パイプフード２０及び排気用配管Ｐｉの屋内側については、第２実施形態と同様に室内化粧部材ＢＰにて固定されている。また、当該第４実施形態でも、第１実施形態で示した取付固定機構としての長尺状固定部材Ｊは設けられない。 [Fourth embodiment]
The exhaust port structure 100 according to the fourth embodiment differs from the second embodiment only in the configuration of the attachment and fixing mechanism. In the following description, emphasis will be placed on the configuration related to the attachment and fixing mechanism, and the same components as in the second embodiment may be given the same reference numerals as in the second embodiment, and the description thereof may be omitted. .
In addition, in the exhaust port structure 100 according to the fourth embodiment, the indoor side of the pipe hood 20 and the exhaust pipe Pi are fixed with the indoor decorative member BP similarly to the second embodiment. Also, in the fourth embodiment, the elongated fixing member J as the attachment and fixing mechanism shown in the first embodiment is not provided.

図５に示すように、当該第４実施形態に係る排気口構造体１００においては、取付固定機構は、環状部材１０の内径部位１０ｃからパイプフード２０へ向けて延びる延設基部１０ｅの延設方向（図５で開口軸Ｐに沿う方向）に交差する交差方向（図５で開口軸Ｐの軸径方向）へ付勢され、且つパイプフード２０を環状部材１０へ近接する側へ移動させたときに外径フランジ部２２と接触して引退姿勢となると共にパイプフード２０の外径フランジ部２２が環状部材１０の内径部位１０ｃに当接しているときに外径フランジ部２２と当接する突出姿勢（図５に示す姿勢）を維持するラッチＲ２を、内径部位１０ｃの周方向で間隔を隔てて複数（当該第４実施形態では２つ）備えて成る。取付固定機構としての複数のラッチＲ２は、開口軸Ｐの周りで等間隔に設けられることが好ましい。
説明を追加すると、ラッチＲ２は、延設基部１０ｅに埋め込まれると共に、軸径方向で内側に付勢バネＲ４により付勢されて設けられており、図５に示す突出姿勢において引退自在に係止されている。また、ラッチＲ２は、屋内側が曲面である共に屋外側が平面である。 As shown in FIG. 5, in the exhaust port structure 100 according to the fourth embodiment, the attachment and fixing mechanism is provided in the direction in which the extension base 10e extends from the inner diameter portion 10c of the annular member 10 toward the pipe hood 20. (direction along the opening axis P in FIG. 5) (in the radial direction of the opening axis P in FIG. 5), and when the pipe hood 20 is moved toward the annular member 10. When the outer diameter flange portion 22 of the pipe hood 20 contacts the inner diameter portion 10c of the annular member 10, the outer diameter flange portion 22 of the pipe hood 20 contacts the outer diameter flange portion 22 and assumes a protruding posture ( A plurality of latches R2 (two in the fourth embodiment) are provided at intervals in the circumferential direction of the inner diameter portion 10c to maintain the posture shown in FIG. It is preferable that the plurality of latches R2 serving as the attachment and fixing mechanism are provided at equal intervals around the opening axis P.
To add an explanation, the latch R2 is embedded in the extending base 10e and is biased inward in the radial direction of the shaft by a biasing spring R4, and is retractably locked in the protruding position shown in FIG. has been done. Further, the latch R2 has a curved surface on the indoor side and a flat surface on the outdoor side.

〔別実施形態〕
上述の実施形態では、パイプフード２０と排気用配管Ｐｉは、別体である構成を示したが、一体であっても構わない。 [Another embodiment]
In the above-described embodiment, the pipe hood 20 and the exhaust pipe Pi are separate bodies, but they may be integrally formed.

尚、上記実施形態（別実施形態を含む、以下同じ）で開示される構成は、矛盾が生じない限り、他の実施形態で開示される構成と組み合わせて適用することが可能であり、また、本明細書において開示された実施形態は例示であって、本発明の実施形態はこれに限定されず、本発明の目的を逸脱しない範囲内で適宜改変することが可能である。 It should be noted that the configuration disclosed in the above embodiment (including other embodiments, the same applies hereinafter) can be applied in combination with the configuration disclosed in other embodiments, as long as there is no contradiction, and The embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the purpose of the present invention.

本発明の排気口構造体は、メンテナンス時等において、屋内側から気密性・防水性を適切に確保しながら容易に着脱可能な排気口構造体として、有効に利用可能である。 The exhaust port structure of the present invention can be effectively used as an exhaust port structure that can be easily attached and detached while properly ensuring airtightness and waterproofness from the indoor side during maintenance and the like.

１０ ：環状部材
１０ｂ ：外径部位
１０ｃ ：内径部位
１０ｅ ：延設基部
２０ ：パイプフード
２２ ：外径フランジ部
１００ ：排気口構造体
ＢＰ ：室内化粧部材
ＢＰａ ：内径環状部位
ＢＰｄ ：外径環状部位
Ｊ ：長尺状固定部材
Ｌａ ：内径
Ｌｂ ：外径
Ｌｃ ：開口径
Ｌｄ ：外径
Ｍｎ ：雌螺子部位
ＮＯ２ａ ：雄螺子部
Ｎａ ：係止部材
Ｎａ２ ：延設基部
Ｎａ３ ：爪部
Ｎｏ２ ：第２螺子
Ｏｎ ：雄螺子部位
Ｐ ：開口軸
Ｐｉ ：排気用配管
Ｒ２ ：ラッチ
Ｒ４ ：付勢バネ
Ｓ ：シール部材
Ｔ ：螺子先端部
Ｔａ ：押圧部
Ｗ ：外壁
Ｗａ ：開口 10: Annular member 10b: Outer diameter portion 10c: Inner diameter portion 10e: Extension base 20: Pipe hood 22: Outer diameter flange portion 100: Exhaust port structure BP: Interior decorative member BPa: Inner diameter annular portion BPd: Outer diameter annular portion J: Long fixing member La: Inner diameter Lb: Outer diameter Lc: Opening diameter Ld: Outer diameter Mn: Female thread part NO2a: Male thread part Na: Locking member Na2: Extension base Na3: Claw part No. 2: Second Screw On: Male screw part P: Opening axis Pi: Exhaust pipe R2: Latch R4: Biasing spring S: Seal member T: Thread tip Ta: Pressing part W: Outer wall Wa: Opening

Claims (5)

建物の外壁に形成された開口に設けられ、排気を排気用配管を介して屋内から屋外へ排出する排気口構造体であって、
屋外側から前記開口の周りの外壁面に取り付け可能であって、内径部位が前記開口の開口径よりも小さく外径部位が前記開口径よりも大きい環状部材と、
屋内側から排気を屋外側へ排出できると共に、前記開口径よりも外径が小さく且つ前記開口の開口軸方向視で前記環状部材の前記内径部位と重畳する外径フランジ部を有するパイプフードと、
前記開口に前記パイプフード及び当該パイプフードに連通接続する前記排気用配管を配置した配置姿勢において、前記環状部材と前記パイプフードとの間にシール部材を介在させた状態で、前記環状部材の前記内径部位に対して前記パイプフードの前記外径フランジ部を着脱自在に固定可能な取付固定機構を備えている排気口構造体。 An exhaust port structure that is provided in an opening formed in an outer wall of a building and discharges exhaust from indoors to outdoors via exhaust piping,
an annular member that can be attached to an outer wall surface around the opening from the outdoor side, and has an inner diameter portion smaller than the opening diameter of the opening and an outer diameter portion larger than the opening diameter;
a pipe hood capable of discharging exhaust gas from the indoor side to the outdoor side, and having an outer diameter flange portion having an outer diameter smaller than the opening diameter and overlapping with the inner diameter portion of the annular member when viewed in the opening axis direction of the opening;
In the arrangement position in which the pipe hood and the exhaust pipe connected to the pipe hood are disposed in the opening, the annular member has a sealing member interposed between the annular member and the pipe hood. An exhaust port structure including an attachment and fixing mechanism that can detachably fix the outer diameter flange portion of the pipe hood to the inner diameter portion. 前記取付固定機構は、
一端側が前記外壁の屋内側に支持されると共に、他端側に前記パイプフードの前記外径フランジ部に形成された挿通孔を介して、前記環状部材の前記内径部位と螺合により固定される螺子先端部を有する長尺状固定部材であり、
前記長尺状固定部材の前記他端側には、前記螺子先端部の前記内径部位との固定状態において、前記パイプフードの前記外径フランジ部と当接する当接部が設けられている請求項１に記載の排気口構造体。 The mounting and fixing mechanism is
One end side is supported on the indoor side of the outer wall, and the other end side is fixed by screwing to the inner diameter portion of the annular member through an insertion hole formed in the outer diameter flange portion of the pipe hood. A long fixing member having a screw tip,
The other end of the elongated fixing member is provided with an abutting portion that comes into contact with the outer diameter flange portion of the pipe hood when the screw tip is fixed to the inner diameter portion. 1. The exhaust port structure according to 1. 前記取付固定機構は、
前記環状部材の前記内径部位と前記パイプフードの前記外径フランジ部との間に介在される前記シール部材としての熱可塑性シーリング剤と、外径環状部位が前記外壁の屋内側に固定されると共に内径環状部位が前記パイプフード又は前記排気用配管の室内側の外周を挟持して固定する室内化粧部材とから構成されている請求項１に記載の排気口構造体。 The mounting and fixing mechanism is
a thermoplastic sealant as the sealing member interposed between the inner diameter portion of the annular member and the outer diameter flange portion of the pipe hood; and the outer diameter annular portion is fixed to the indoor side of the outer wall. 2. The exhaust port structure according to claim 1, wherein the inner diameter annular portion is composed of the pipe hood or an indoor decorative member that clamps and fixes the outer periphery of the exhaust pipe on the indoor side. 前記取付固定機構は、
前記環状部材への前記パイプフードの装着姿勢において、前記環状部材の前記内径部位に固定され当該内径部位から前記パイプフードへ向けて延びると共に弾性変形自在な延設基部と、当該延設基部の延設方向に交差する交差方向へ突出して前記パイプフードの前記外径フランジ部に係止可能な爪部とを有する係止部材を、前記内径部位の周方向で間隔を隔てて複数備えて成る請求項１に記載の排気口構造体。 The mounting and fixing mechanism is
In the mounting posture of the pipe hood on the annular member, an extension base fixed to the inner diameter portion of the annular member and extending from the inner diameter region toward the pipe hood and elastically deformable; A plurality of locking members each having a claw portion that protrudes in a cross direction intersecting the installation direction and that can be locked to the outer diameter flange portion of the pipe hood are provided at intervals in the circumferential direction of the inner diameter portion. Item 1. The exhaust port structure according to item 1. 前記取付固定機構は、
前記環状部材の前記内径部位から前記パイプフードへ向けて延びる延設基部の延設方向に交差する交差方向へ付勢され、且つ前記パイプフードを前記環状部材へ近接する側へ移動させたときに前記外径フランジ部と当接して引退姿勢となると共に前記パイプフードの前記外径フランジ部が前記環状部材の前記内径部位に当接しているときに前記外径フランジ部と当接する突出姿勢を維持するラッチを、前記内径部位の周方向で間隔を隔てて複数備えて成る請求項１に記載の排気口構造体。 The mounting and fixing mechanism is
When the annular member is biased in a cross direction that intersects the extension direction of the extension base extending from the inner diameter portion toward the pipe hood, and the pipe hood is moved toward the annular member. When the outer diameter flange portion of the pipe hood contacts the inner diameter portion of the annular member, the outer diameter flange portion of the pipe hood assumes a retracted position and maintains a protruding posture where it contacts the outer diameter flange portion. The exhaust port structure according to claim 1, further comprising a plurality of latches spaced apart from each other in the circumferential direction of the inner diameter portion.
JP2022056023A 2022-03-30 2022-03-30 exhaust port structure Pending JP2023148147A (en)

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