JP4492243B2

JP4492243B2 - window

Info

Publication number: JP4492243B2
Application number: JP2004221973A
Authority: JP
Inventors: 俊吾谷井; 一郎水谷
Original assignee: 三協立山アルミ株式会社
Priority date: 2004-07-29
Filing date: 2004-07-29
Publication date: 2010-06-30
Anticipated expiration: 2024-07-29
Also published as: JP2006037623A

Description

本発明は、窓に関する。 The present invention relates to a window.

特許文献１には、筒状部を屋内側枠材と屋外側枠材とを接合した筒枠が開示されている。また、この特許文献１の筒枠は内部空間の断面積が屋内側開口端部と屋外側開口端部とで略同じ面積になっている Patent Literature 1 discloses a cylindrical frame in which a cylindrical portion is joined to an indoor side frame material and an outdoor side frame material. Moreover, the cylindrical frame of this patent document 1 has the cross-sectional area of internal space as substantially the same area by the indoor side opening edge part and the outdoor side opening edge part.

特開２００３−１８４４３４号公報JP 2003-184434 A

しかし、筒枠は複数の枠材を接合して構成しているので、部品点数が多く施工に手間がかかると共に接合部がある為に強度や水漏れ等の信頼性に劣るという問題がある。
筒枠は内部空間の断面積が屋内側開口端部と屋外側開口端部とで略同じ面積になっているので、屋外側開口端部に斜めに射し込む光を屋内に導き難く、採光性に劣るという問題がある。 However, since the cylindrical frame is formed by joining a plurality of frame members, there are problems that the number of parts is large and the work is troublesome, and the reliability is inferior in strength, water leakage, and the like due to the joint.
Since the cross-sectional area of the interior space of the tube frame is almost the same at the indoor opening end and the outdoor opening end, it is difficult to guide the light that shines obliquely into the outdoor opening end indoors, making it light There is a problem of being inferior.

そこで、本発明は、施工が容易で且つ強度や水漏れ等に対する信頼性が高いと共に、採光性に優れた窓の提供を目的とする。 Accordingly, an object of the present invention is to provide a window that is easy to construct and has high reliability with respect to strength, water leakage, and the like, and has excellent daylighting.

請求項１に記載の発明は、筒枠と、突き出し障子とを備え、筒枠は、屋内側及び屋外側が開口した筒状部と、筒状部の屋外側開口端部の下部に設けてあり外壁よりも屋外側に位置する屋外側水切り部と、筒状部の内周面における屋内側開口端部に周方向に連続して設けた堰部と、筒状部の内周面上部で堰部よりも屋外側の位置に垂下した内部水切り部と、筒状部の屋内側開口端部の外周面に周方向に連続して設けた内壁見切り部と、筒状部の外周面に設けた躯体取付部とを有する鋳物製であり、筒状部は内部空間の断面積が屋内側から屋外側に向けて徐々に広くなっており、突き出し障子は内部水切り部と堰部との間に配置して筒枠内に開閉自在に取付けてあり、閉じたときに屋内側面が堰部の屋外側面に当接することを特徴とする。 The invention according to claim 1 includes a cylindrical frame and a protruding shoji, and the cylindrical frame is provided at a lower part of the cylindrical side that is open on the indoor side and the outdoor side, and on the outdoor side opening end of the cylindrical part. An outdoor drainer located on the outdoor side of the outer wall, a dam part provided continuously in the circumferential direction at the indoor opening end of the inner peripheral surface of the cylindrical part, and a dam at the upper part of the inner peripheral surface of the cylindrical part Provided on the outer peripheral surface of the cylindrical portion, the internal draining portion hanging down to a position on the outdoor side of the portion, the inner wall parting portion provided continuously on the outer peripheral surface of the indoor side opening end portion of the cylindrical portion, and the cylindrical portion It is made of a casting that has a housing mounting part, and the cylindrical part has a gradually increasing cross-sectional area of the internal space from the indoor side to the outdoor side, and the protruding shoji is arranged between the internal draining part and the weir part And it is attached in the cylinder frame so that opening and closing is possible, and when closed, the indoor side face comes into contact with the outdoor side face of the weir part.

請求項１に記載の発明によれば、筒枠は鋳物製であるから、筒状部に接合部がなく、強度や水漏れ等における信頼性が高い。また、筒枠を鋳物製としたことから、部品点数が少なくできる。
筒枠の筒状部は内部空間の断面積が屋内側から屋外側に向けて徐々に広くなっており、屋外側開口端部に斜めに差し込む光を屋内に導き易いので、採光性が高い。
筒状部の内部空間に吹き込んだ雨水等は、屋外側水切り部により外壁に伝って流れるのを防止しているので、外壁面に雨筋汚れを生じ難い。
筒状部の内周面上部には内部水切りが設けてあるので、雨水等が筒状部の内周面上部を伝わって屋内に入るのを防止できる。
筒状部の屋内側開口端部には内周面の周方向に突設した堰部が設けてあるので、雨の吹き込み等による屋内への雨水の侵入を防止できる。
堰部は障子の戸当りを兼ねているので、別に戸当りを設ける必要がない。
筒状部の外周面に内壁見切り部を設けてあり、屋内側には内壁見切り部の厚み分のみが見付け面になって現れるので室内側見付け面を小さくでき、筒枠が目立ち難くいので意匠性に優れる。 According to the first aspect of the present invention, since the cylindrical frame is made of a casting, the cylindrical portion has no joint portion, and has high reliability in strength, water leakage, and the like. Further, since the cylindrical frame is made of casting, the number of parts can be reduced.
The cylindrical portion of the cylindrical frame has a large sectional area of the internal space from the indoor side toward the outdoor side, and light that is obliquely inserted into the outdoor side opening end portion can be easily guided indoors.
Since rainwater or the like blown into the inner space of the tubular portion is prevented from flowing to the outer wall by the outdoor draining portion, it is difficult for rain streak to occur on the outer wall surface.
Since an internal drainer is provided at the upper part of the inner peripheral surface of the cylindrical part, it is possible to prevent rainwater and the like from entering the indoor part through the upper part of the inner peripheral surface of the cylindrical part.
Since the indoor side opening end portion of the cylindrical portion is provided with a weir portion protruding in the circumferential direction of the inner peripheral surface, it is possible to prevent rainwater from entering the indoor due to rain blowing or the like.
Since the weir also serves as a door for shoji, there is no need to provide a separate door.
Since the inner wall parting part is provided on the outer peripheral surface of the cylindrical part, only the thickness of the inner wall parting part appears as a finding surface on the indoor side, so the indoor side finding surface can be made small and the cylindrical frame is difficult to stand out. Excellent in properties.

以下に、添付図面を参照して本発明の第１実施の形態を説明するが、まず、図１及び図２を参照して本発明の第１実施の形態を説明する。図１（ａ）は第１実施の形態にかかる窓の縦断面図であり、（ｂ）は屋内側から見た正面図であり、図２は第１実施の形態にかかる窓の横断面図である。
第１実施の形態にかかる窓１は、縦断面が矩形の筒枠３と、筒枠３内に設けてあり正面視矩形の突き出し障子５とを備えている。
筒枠３は、屋内側と屋外側とに開口した筒状部７と、筒状部７の屋外側開口端部１９の下部に設けた屋外側水切り部９と、筒状部７の屋内側開口端部２１の内周面に設けた堰部１１及び外周面に設けた内壁見切り部１３と、筒状部７の内周面に設けた内部水切り部１５と、筒状部７の外周面に設けた躯体取付部１７ａ、１７ｂとを備えている。筒枠３は鋳物製であり、筒状部７と、屋外側水切り部９と、堰部１１と、内壁見切り部１３と、内部水切り部１５及び躯体取付部１７ａ、１７ｂは鋳造により一体に成形してある。
筒状部７は、内部空間２３の断面積が屋内側から屋外側に向けて徐々に広くなっている。内部空間２３は室内側開口端部の面積Ｓ２よりも室外側開口端部の面積Ｓ１のほうが大きく且つ内部空間内２３で徐々に面積を変えている。また、筒状部７の内周面の上部２５ａは屋外側が高くなるように傾斜しており、内周面下部２５ｂは屋外側が低くなるように傾斜している。
屋外側水切り部９は筒状部７の屋外側開口端部１９の下部において、下面を屋外側が低くなるようにして外壁２７よりも屋外側に突設しており、屋外側水切り部９には外壁２７から離れた位置に垂下部９ａが設けてある。
堰部１１は、筒状部７の内周面２５における屋内側開口端部２１において、内周に沿って設けてあり、筒状部７の内周面に段部を形成している。この堰部１１の屋外側面は突き出し障子５が閉じたときに当接する当接面２９になっている。
内壁見切り部１３は筒状部７の外周面で且つ屋内側開口端部２１に設けてあり、内壁３１の開口端が当接している。内壁見切り部１３の室内側端面が室内側見付け面４０となっている。
躯体取付部１７ａ、１７ｂは筒状部７において、内壁見切り部１３よりも屋外側の位置で外周面から突設しており、本実施の形態では屋外側と屋内側とに２つの躯体取付部１７ａ、１７ｂが間隔を開けて設けてあると共に、屋外側躯体取付部１７ａと屋内側駆体取付部１７ｂとは筒状部７の外周囲に設けてある。屋外側躯体取付部１７ａの屋内側面に躯体３３の屋外側係合部３３ａが当接しており、屋内側躯体取付部１７ｂの屋外側面には躯体３３の屋内側係合部３３ｂが当接している。即ち、筒状部７の上下左右において、躯体の屋外側係合部３３ａと屋内側係合部３３ｂとを屋外側躯体取付部１７ａと屋内側駆体取付部１７ｂとで挟持している。
突き出し障子５は、筒状部７の内部空間２３において、内部水切り部１５と堰部１１との間に配置して筒枠３内に開閉自在に取付けてある。筒枠の上部にはヒンジ３７が固定されており、水平軸回りに回動自在な回動端部３９に障子本体５ａの上端が固定されている。
突き出し障子５は、閉じたときに、障子本体５ａの四周端部の屋内側面が堰部１１の屋外側面に当接するようになっている。 Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings. First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. Fig.1 (a) is a longitudinal cross-sectional view of the window concerning 1st Embodiment, (b) is the front view seen from the indoor side, FIG. 2 is a cross-sectional view of the window concerning 1st Embodiment. It is.
The window 1 according to the first embodiment includes a cylindrical frame 3 having a rectangular longitudinal section, and a protruding shoji 5 provided in the cylindrical frame 3 and having a rectangular shape in front view.
The cylindrical frame 3 includes a cylindrical portion 7 that is open to the indoor side and the outdoor side, an outdoor draining portion 9 that is provided below the outdoor side opening end portion 19 of the cylindrical portion 7, and an indoor side of the cylindrical portion 7. The dam portion 11 provided on the inner peripheral surface of the opening end 21, the inner wall parting portion 13 provided on the outer peripheral surface, the internal draining portion 15 provided on the inner peripheral surface of the cylindrical portion 7, and the outer peripheral surface of the cylindrical portion 7 The housing attachment parts 17a and 17b provided in the are provided. The cylindrical frame 3 is made of a casting, and the cylindrical part 7, the outdoor draining part 9, the dam part 11, the inner wall parting part 13, the internal draining part 15, and the housing mounting parts 17a and 17b are integrally formed by casting. It is.
In the tubular portion 7, the cross-sectional area of the internal space 23 gradually increases from the indoor side toward the outdoor side. In the internal space 23, the area S1 of the outdoor opening end is larger than the area S2 of the indoor opening end, and the area gradually changes in the internal space 23. Moreover, the upper part 25a of the inner peripheral surface of the cylindrical part 7 inclines so that the outdoor side may become high, and the inner peripheral surface lower part 25b inclines so that the outdoor side may become low.
The outdoor side draining portion 9 is provided on the lower side of the outdoor side opening end portion 19 of the tubular portion 7 so that the lower surface projects downward from the outer wall 27 so that the outdoor side is lower. A hanging portion 9 a is provided at a position away from the outer wall 27.
The dam portion 11 is provided along the inner periphery at the indoor-side opening end portion 21 on the inner peripheral surface 25 of the cylindrical portion 7, and forms a step portion on the inner peripheral surface of the cylindrical portion 7. The outdoor side surface of the dam portion 11 is a contact surface 29 that contacts when the protruding shoji 5 is closed.
The inner wall parting portion 13 is provided on the outer peripheral surface of the cylindrical portion 7 and on the indoor side opening end 21, and the opening end of the inner wall 31 is in contact therewith. The indoor side end surface of the inner wall parting portion 13 is the indoor side finding surface 40.
The housing attachment portions 17a and 17b project from the outer peripheral surface of the tubular portion 7 at a position on the outdoor side of the inner wall parting portion 13, and in this embodiment, two housing attachment portions are provided on the outdoor side and the indoor side. 17a and 17b are provided at intervals, and the outdoor side housing attaching part 17a and the indoor side body attaching part 17b are provided around the outer periphery of the tubular part 7. The outdoor side engaging portion 33a of the housing 33 is in contact with the indoor side surface of the outdoor side housing attaching portion 17a, and the indoor side engaging portion 33b of the housing 33 is in contact with the outdoor side surface of the indoor side housing attaching portion 17b. . That is, the outdoor side engaging part 33a and the indoor side engaging part 33b of the housing are sandwiched between the outdoor side housing attaching part 17a and the indoor side body attaching part 17b on the top, bottom, left and right of the tubular part 7.
The protruding shoji 5 is disposed between the internal draining portion 15 and the weir portion 11 in the inner space 23 of the tubular portion 7 and is attached to the tubular frame 3 so as to be freely opened and closed. A hinge 37 is fixed to the upper part of the cylindrical frame, and the upper end of the shoji body 5a is fixed to a rotating end 39 that is rotatable about a horizontal axis.
When the protruding shoji 5 is closed, the indoor side surface of the four peripheral ends of the shoji body 5 a comes into contact with the outdoor side surface of the dam portion 11.

次に、本実施の形態にかかる窓１の施工、作用及び効果について説明する。
窓１の施工は、躯体開口に筒枠３を配置して屋外側躯体取付部１７ａを躯体３３の屋外側係合部材３３ａの屋外側面に当接し、屋内側駆体取付け部１７ｂを躯体３３の屋内側係合部材３３ｂの屋内側面に当接させて屋外側躯体取付部１７ａと屋内側駆体取付部１７ｂとで躯体係合部３３ａ、３３ｂを挟持するように取付ける。そして、筒枠３の内周面において、屋内側上部にヒンジ３７を固定し、ヒンジの回動端部３９に障子本体５ａを固定する。
筒枠３は鋳造により製造しているので、筒状部７に接合部がなく、強度や水漏れ等における信頼性が高い。また、筒枠３を鋳物製としたことから部品点数が少なくできる。
筒枠３の筒状部７は内部空間２３の断面積が、屋外側開口端部１９の屋内側から屋外側に向けて徐々に広くなっており、屋外側開口端部１９に斜め方向から入る光を屋内側開口端部に導き易いので、採光性が高い。
雨等が筒枠３内に吹き込んだときには、筒枠３内に吹き込んだ水は、筒状部７の内周面を伝わって屋外側に流れるが、屋外側水切り部９は外壁２７よりも屋外側に突設して、雨水が外壁２７に伝って流れるのを防止しているので、外壁２７に雨筋汚れを生じ難い。
筒状部７の内周面上部２５ａには内部水切り部１５が設けてあるので、屋外側開口端部１９の内周面上部２５ａを伝わって屋内に入った水は内部水切り部１５により筒状部７の内周面下部２５ｂに落下し、屋内側開口端部２１側に伝わらないようにしているので、雨水等が屋内に入るのを防止する。
筒状部７の内周面２５における屋内側開口端部１９には内部空間２３に突設した堰部１１が設けてあるので、雨の吹き込み等による屋内への雨水の侵入を防止できる。
堰部１１は突き出し障子５の戸当りを兼ねているので、別に戸当りを設ける必要がない。
筒枠３には筒状部７の外周面の屋内側に内壁見切り部１３を設けてあるので、内壁見切り部１３の厚み分Ｅのみが見付け面４０になり、見付け面４０を小さくできるので、屋内側から見た筒枠３が目立ち難く、意匠性に優れる。
本実施の形態では、建物の壁に複数の窓１を配置した場合にも、突き出し障子５が内部水切り部１５と堰部１１との間に配置してあり、筒状部７の屋内側に位置しているので、外から窓１見た場合に、突き出し障子５の開閉状態が見え難く、各窓の開閉状態がまちまちでも外観が良い。 Next, construction, operation, and effect of the window 1 according to the present embodiment will be described.
The window 1 is constructed by arranging the cylinder frame 3 at the opening of the housing, abutting the outdoor side housing attaching portion 17 a against the outdoor side surface of the outdoor side engaging member 33 a of the housing 33, and the indoor side body attaching portion 17 b of the housing 33. It is made to contact | abut to the indoor side surface of the indoor side engagement member 33b, and it attaches so that the body engagement parts 33a and 33b may be pinched | interposed by the outdoor side frame attachment part 17a and the indoor side body attachment part 17b. Then, on the inner peripheral surface of the cylindrical frame 3, the hinge 37 is fixed to the upper indoor side, and the shoji body 5 a is fixed to the rotation end 39 of the hinge.
Since the cylindrical frame 3 is manufactured by casting, the cylindrical portion 7 has no joint portion, and has high reliability in terms of strength, water leakage, and the like. Further, since the cylindrical frame 3 is made of a casting, the number of parts can be reduced.
In the cylindrical portion 7 of the cylindrical frame 3, the cross-sectional area of the internal space 23 gradually increases from the indoor side to the outdoor side of the outdoor side opening end 19, and enters the outdoor side opening end 19 from an oblique direction. Since it is easy to guide light to the indoor side opening end, it is highly daylighting.
When rain or the like blows into the tubular frame 3, the water blown into the tubular frame 3 flows along the inner peripheral surface of the tubular portion 7 to the outdoor side, but the outdoor side draining portion 9 is closer to the outer wall 27 than the outer wall 27. Since it protrudes outside and prevents rainwater from flowing along the outer wall 27, it is difficult to cause rain streak stains on the outer wall 27.
Since the internal draining portion 15 is provided on the inner peripheral surface upper portion 25 a of the cylindrical portion 7, the water entering the indoor through the inner peripheral surface upper portion 25 a of the outdoor side opening end portion 19 is tubular by the internal draining portion 15. Since it falls to the inner peripheral surface lower part 25b of the part 7 and is not transmitted to the indoor side opening end part 21 side, rainwater etc. are prevented from entering indoors.
Since the indoor side opening end portion 19 on the inner peripheral surface 25 of the tubular portion 7 is provided with the weir portion 11 protruding from the internal space 23, it is possible to prevent rainwater from entering the room due to rain blowing or the like.
Since the weir part 11 also serves as a door for the protruding shoji 5, there is no need to provide a separate door.
Since the inner wall parting portion 13 is provided on the cylindrical frame 3 on the indoor side of the outer peripheral surface of the cylindrical part 7, only the thickness E of the inner wall parting portion 13 becomes the finding surface 40, and the finding surface 40 can be made small. The cylindrical frame 3 viewed from the indoor side is not conspicuous and has excellent design.
In the present embodiment, even when a plurality of windows 1 are arranged on the wall of the building, the protruding shoji 5 is arranged between the internal draining portion 15 and the weir portion 11, and on the indoor side of the tubular portion 7. Since it is located, when the window 1 is viewed from the outside, it is difficult to see the open / closed state of the protruding shoji 5, and the appearance is good even if the open / closed state of each window varies.

次に、図３及び図４を参照して本発明の第２実施の形態について説明するが、以下に説明する実施の形態において、上述した実施の形態と同一の作用効果を奏する部分には同一の符号を付することによってその部分の詳細な説明を省略し、以下の説明では第１実施の形態と異なる点を主に説明する。
図３（ａ）は第２実施の形態にかかる窓の縦断面図であり、（ｂ）は屋内側から見た正面図であり、図２は第２実施の形態にかかる窓の横断面図である。
第２実施の形態にかかる窓１は、筒枠３は縦断面が円形になっており、突き出し障子５も正面視円形になっている。
筒状部７の屋外側開口端部１９は上部よりも下部が屋外側に突設するように円筒を斜めに切断した形状になっている。
内部水切り部１５は筒状部７の内周面上部２５ａに約９０度の円弧状に設けてある。
堰部１１は筒状部７と別体に製造してあり、筒状部７の内周にねじで固定してある。また、ヒンジ３７の一端部３８は堰部１１に固定してある。
屋外側水切り部９には、第１実施の形態にある垂下部９ａを設けておらず、筒状部７の屋外側を下方に傾斜した端が屋外側水切り部９になっている。
この第２実施の形態によれば、堰部１１を筒状部７と一体に鋳造していない点を除いて、上述した第１実施の形態と同様な効果を得ることができる。 Next, a second embodiment of the present invention will be described with reference to FIG. 3 and FIG. 4. In the embodiment described below, the same parts as those described in the above embodiment are the same. The detailed description of the portion is omitted by attaching the reference numeral, and the following description will mainly focus on differences from the first embodiment.
FIG. 3A is a longitudinal sectional view of a window according to the second embodiment, FIG. 3B is a front view seen from the indoor side, and FIG. 2 is a transverse sectional view of the window according to the second embodiment. It is.
In the window 1 according to the second embodiment, the cylindrical frame 3 has a circular longitudinal section, and the protruding shoji 5 has a circular shape when viewed from the front.
The outdoor side opening end 19 of the cylindrical part 7 has a shape obtained by obliquely cutting the cylinder so that the lower part protrudes from the upper part to the outdoor side.
The internal draining portion 15 is provided in an arc shape of about 90 degrees on the inner peripheral surface upper portion 25 a of the cylindrical portion 7.
The weir part 11 is manufactured separately from the cylindrical part 7 and is fixed to the inner periphery of the cylindrical part 7 with screws. One end 38 of the hinge 37 is fixed to the weir 11.
The outdoor draining portion 9 is not provided with the hanging portion 9 a in the first embodiment, and the end of the tubular portion 7 that is inclined downward on the outdoor side is the outdoor draining portion 9.
According to the second embodiment, the same effects as those of the first embodiment described above can be obtained except that the dam portion 11 is not integrally cast with the cylindrical portion 7.

本発明は、上述した実施の形態に限らず、本発明の要旨を逸脱しない範囲で種々変形可能である。
例えば、躯体取付部１７ａ、１７ｂは躯体にねじやボルトで止めるものであってもよい。また、躯体取付部１７ａ、１７ｂは一つであってもよい。
筒状部７の断面形状や突き出し障子５の正面形状は円形や矩形に限らず、６角形や８角形等でも良く、形状は限定されない。
第２実施の形態において、屋外側水切り部９に第１実施の形態のような垂下部９ａを設けてもよいし、第１実施の形態の屋外側水切り部９に垂下部９ａを設けなくてもよい。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
For example, the housing attachment portions 17a and 17b may be those that are fixed to the housing with screws or bolts. Moreover, the number of the housing attachment portions 17a and 17b may be one.
The cross-sectional shape of the cylindrical portion 7 and the front shape of the protruding shoji 5 are not limited to a circle or a rectangle, but may be a hexagon or an octagon, and the shape is not limited.
In 2nd Embodiment, you may provide the drooping part 9a like 1st Embodiment in the outdoor side draining part 9, and do not provide the drooping part 9a in the outdoor side draining part 9 of 1st Embodiment. Also good.

（ａ）は第１実施の形態にかかる窓の縦断面図であり、（ｂ）は屋内側から見た正面図である。(A) is a longitudinal cross-sectional view of the window concerning 1st Embodiment, (b) is the front view seen from the indoor side. 第１実施の形態にかかる窓の横断面図である。It is a cross-sectional view of the window concerning a 1st embodiment. （ａ）は第２実施の形態にかかる窓の縦断面図であり、（ｂ）は屋内側から見た正面図である。(A) is a longitudinal cross-sectional view of the window concerning 2nd Embodiment, (b) is the front view seen from the indoor side. 第２実施の形態にかかる窓の横断面図である。It is a cross-sectional view of the window concerning 2nd Embodiment.

Explanation of symbols

１窓
３筒枠
５突き出し障子
７筒状部
９屋外側水切り部
１１堰部
１３内壁見切り部
１５内部水切り部
１７ａ、１７ｂ躯体取付部
１９屋外側開口端部
２１屋内側開口端部
２３内部空間
DESCRIPTION OF SYMBOLS 1 Window 3 Cylinder frame 5 Protruding shoji 7 Cylindrical part 9 Outdoor side draining part 11 Weir part 13 Inner wall parting part 15 Internal draining part 17a, 17b Housing attaching part 19 Outdoor side opening end part 21 Indoor side opening end part 23 Internal space

Claims

The cylinder frame is provided with a protruding shoji, and the cylinder frame is provided on the indoor side and on the outdoor side, on the outdoor side of the cylindrical part, and on the outdoor side of the cylindrical part. Outer draining part, weir part continuously provided in the opening end on the indoor side on the inner peripheral surface of the cylindrical part, and the upper part of the inner peripheral surface of the cylindrical part, hanging down to a position on the outdoor side of the dam part The inner draining portion, the inner wall parting portion provided continuously in the circumferential direction on the outer peripheral surface of the indoor side opening end portion of the cylindrical portion, and the casing mounting portion provided on the outer peripheral surface of the cylindrical portion. Yes, the cylindrical part has a gradually increasing cross-sectional area of the internal space from the indoor side to the outdoor side, and the protruding shoji is placed between the internal draining part and the weir part so that it can be opened and closed inside the cylindrical frame. A window that is attached and has an indoor side that abuts against an outdoor side of the weir when closed.