JP2021098938A - Roof ventilation structure - Google Patents

Roof ventilation structure Download PDF

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JP2021098938A
JP2021098938A JP2019229915A JP2019229915A JP2021098938A JP 2021098938 A JP2021098938 A JP 2021098938A JP 2019229915 A JP2019229915 A JP 2019229915A JP 2019229915 A JP2019229915 A JP 2019229915A JP 2021098938 A JP2021098938 A JP 2021098938A
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wall
ventilation
roof
eaves
building
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JP7319909B2 (en
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丈 高橋
Jo Takahashi
丈 高橋
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

To provide a roof ventilation structure capable of securing ventilation performance during snowfall.SOLUTION: A roof RF is a flat roof in which an outer periphery of a roof body 20 is surrounded by an eaves part 30, and a plate-shaped throating member 80 is provided along an upper part of a space for ventilation provided along a gap between an outer wall 10 and the eaves part 30. Further, the throating member 80 is provided with an upper wall part 81 arranged with a first ventilation interval Lb in the vertical direction with respect to the outer wall 10, and a vertical wall part 82 arranged with a second ventilation interval Lc in the horizontal direction with respect to the outer wall 10 and forming an opening for ventilation facing downward between the vertical wall part and the outer wall 10. Then, a ventilation path shown by an arrow Vp of a two-dot chain line is formed from the opening for ventilation to an attic space of the roof RF through a portion between the throating member 80 and the outer wall 10 with the first and second ventilation intervals and also via the eaves part 30.SELECTED DRAWING: Figure 2

Description

本発明は、屋根の換気構造に関するものである。 The present invention relates to a ventilation structure of a roof.

従来、外壁に設けた通気路を用いて陸屋根の小屋裏の換気を行う構造が知られている(例えば、特許文献1参照)。この従来技術では、軒樋の上側に軒先部が取り付けられ、この軒先部は、下側板を備えており、この下側板によって通気部を形成している。そして、この軒先部の下側板と軒樋との間に、換気装置が設けられている。 Conventionally, there is known a structure for ventilating the back of a hut on a flat roof using a ventilation path provided on an outer wall (see, for example, Patent Document 1). In this conventional technique, an eaves tip is attached to the upper side of the eaves gutter, and the eaves tip is provided with a lower plate, and the lower plate forms a ventilation portion. A ventilation device is provided between the lower plate of the eaves and the eaves gutter.

したがって、この従来技術では、外壁パネルの上端を陸屋根に極力近づけることが可能になる。 Therefore, in this conventional technique, it is possible to bring the upper end of the outer wall panel as close as possible to the flat roof.

また、外壁を陸屋根よりも上方位置まで延在し、陸屋根の周囲にパラペットを立ち上げ、このパラペットの内部を通って小屋裏に至る換気通路を形成する技術も提案されている(例えば、特許文献2参照)。 Further, a technique has been proposed in which an outer wall extends above the flat roof, a parapet is set up around the flat roof, and a ventilation passage is formed through the inside of the parapet to the back of the hut (for example, patent documents). 2).

特開2016−188470号公報Japanese Unexamined Patent Publication No. 2016-188470 特開2011−127340号公報Japanese Unexamined Patent Publication No. 2011-127340

しかしながら、特許文献1に記載された屋根の換気構造では、降雪時に、換気装置の開口が塞がれて換気ができなくなるおそれがあった。 However, in the roof ventilation structure described in Patent Document 1, there is a risk that the opening of the ventilation device will be blocked and ventilation will not be possible during snowfall.

また、特許文献2に記載の構造では、換気路の開放端がパラペットに設けられているため、降雪時も換気可能であるが、パラペットを設ける必要があり、建物の形状が限られる。 Further, in the structure described in Patent Document 2, since the open end of the ventilation path is provided in the parapet, ventilation is possible even during snowfall, but it is necessary to provide the parapet, and the shape of the building is limited.

本開示は、パラペットを立ち上げない構造の屋根において、降雪時の換気性能を確保可能な屋根の換気構造を提供することを目的とする。 An object of the present disclosure is to provide a roof ventilation structure capable of ensuring ventilation performance during snowfall in a roof having a structure in which a parapet is not raised.

本開示の屋根の換気構造は、屋根本体の外周が庇部に囲まれた陸屋根を備え、前記建物の前記庇部と、その下方位置に設けられた外壁との間に沿って換気用の隙間が設けられ、前記換気用の隙間の上部に沿って板状の水切部材が設けられている。そして、前記水切部材は、水平方向で前記庇部および前記換気用の隙間よりも建物外側に突出し、前記外壁に対して上下方向に第1の換気用の間隔を空けて配置された上壁部と、前記上壁部から、前記換気用の隙間の下端位置よりも下方に延在され、前記外壁に対して水平方向に第2の換気用の間隔を空けて配置されて、前記外壁との間に下方を向いた換気用の開口を形成した縦壁部とを備え、前記換気用の開口から、前記水切部材と前記外壁との間の前記第1、第2の換気用の間隔を空けた部分を通り、さらに、前記庇部を介して前記屋根の小屋裏に至る換気路が形成されている。 The ventilation structure of the roof of the present disclosure includes a flat roof in which the outer periphery of the roof body is surrounded by eaves, and a gap for ventilation is provided along between the eaves of the building and an outer wall provided below the eaves. Is provided, and a plate-shaped drainage member is provided along the upper part of the ventilation gap. Then, the drainage member protrudes outside the building from the eaves portion and the ventilation gap in the horizontal direction, and the upper wall portion is arranged in the vertical direction with a first ventilation interval with respect to the outer wall. And from the upper wall portion, it extends below the lower end position of the ventilation gap, and is arranged with a second ventilation interval in the horizontal direction with respect to the outer wall. A vertical wall portion having a downward-facing ventilation opening is provided between them, and a space between the drainage member and the outer wall for the first and second ventilation is provided from the ventilation opening. A ventilation path is formed through the above-mentioned portion and further through the eaves portion to the back of the hut of the roof.

本開示の屋根の換気構造では、換気路の開口が、下方を向き、しかも、外壁と庇部との間の換気用の隙間は、水切部材により覆われているため、積雪で塞がれることがない。したがって、屋根本体の外周が庇部に囲まれた陸屋根において、降雪時の換気性能を確保可能な屋根の換気構造を提供することができる。 In the ventilation structure of the roof of the present disclosure, the opening of the ventilation passage faces downward, and the ventilation gap between the outer wall and the eaves is covered with a drainage member, so that the ventilation passage is closed by snow. There is no. Therefore, in a flat roof in which the outer periphery of the roof body is surrounded by eaves, it is possible to provide a roof ventilation structure capable of ensuring ventilation performance during snowfall.

本実施の形態1の屋根の換気構造を適用した建物を示す斜視図である。It is a perspective view which shows the building which applied the ventilation structure of the roof of this Embodiment 1. 前記建物の屋根の妻側の庇部を示す断面図である。It is sectional drawing which shows the eaves side of the roof of the building on the gable side. 本実施の形態1の屋根の換気構造における水切部材およびこの水切部材の外壁への取付状態を示す斜視図である。It is a perspective view which shows the drainage member in the ventilation structure of the roof of Embodiment 1 and the state of attachment to the outer wall of this drainage member. 本実施の形態2の屋根の換気構造を示す妻側(図1のB−B線の位置)の断面図である。It is sectional drawing of the gable side (the position of line BB in FIG. 1) which shows the ventilation structure of the roof of Embodiment 2. 本実施の形態2の屋根の換気構造を示す桁側(図1のA−A線の位置)の断面図である。It is sectional drawing of the girder side (the position of line AA of FIG. 1) which shows the ventilation structure of the roof of Embodiment 2. 本実施の形態2の屋根の換気構造における水切部材を示す図6Bの矢印Y6の方向から見た正面図である。It is a front view seen from the direction of the arrow Y6 of FIG. 6B which shows the drainage member in the ventilation structure of the roof of the present Embodiment 2. 本実施の形態2の屋根の換気構造における水切部材を示す要部の断面図である。It is sectional drawing of the main part which shows the drainage member in the ventilation structure of the roof of Embodiment 2.

以下、本発明の実施の形態について図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(実施の形態1)
まず、実施の形態1の屋根の換気構造およびこの屋根の換気構造を適用した建物Dについて説明する。
(Embodiment 1)
First, the roof ventilation structure of the first embodiment and the building D to which the roof ventilation structure is applied will be described.

実施の形態1の屋根の換気構造が適用された図1に示す建物Dは、工場で製作された複数の建物ユニットUを、建築現場で水平方向および上下方向に結合させて形成されたユニット建物である。そして、この建物Dの最上階の建物ユニットUの上部に、屋根RFが設けられている。 The building D shown in FIG. 1 to which the roof ventilation structure of the first embodiment is applied is a unit building formed by connecting a plurality of building units U manufactured in a factory in the horizontal direction and the vertical direction at a construction site. Is. A roof RF is provided above the building unit U on the top floor of the building D.

なお、建物ユニットUは、図示は省略するが、四隅に配置された鋼製の柱と、その柱の上端間および下端間に架け渡された鋼製の梁部材とによって、ボックス形ラーメン構造に形成された周知のものである。 Although not shown, the building unit U has a box-shaped rigid frame structure formed by steel columns arranged at the four corners and steel beam members bridged between the upper ends and lower ends of the columns. It is a well-known one that has been formed.

図2は、建物Dの最上階の建物ユニットUの上部と屋根RFの外周部分(例えば、図1のB−B線の位置)を示す断面図であり、建物ユニットUの建物外側の方向(矢印OUTの方向)である外側面には、外壁10が設けられている。 FIG. 2 is a cross-sectional view showing the upper portion of the building unit U on the uppermost floor of the building D and the outer peripheral portion of the roof RF (for example, the position of the line BB in FIG. 1), and is a direction of the building unit U outside the building (for example, the position of the building unit U. An outer wall 10 is provided on the outer surface (in the direction of the arrow OUT).

(外壁の構成)
まず、外壁10の構成について説明する。
外壁10は、外壁下地材11、胴縁12、外壁パネル13を備える。なお、図において矢印INが、建物ユニットUの水平方向で建物内側の方向を示し、矢印OUTが水平方向で建物外側の方向を示し、矢印UPが建物上方を示す。
(Structure of outer wall)
First, the configuration of the outer wall 10 will be described.
The outer wall 10 includes an outer wall base material 11, a furring strip 12, and an outer wall panel 13. In the figure, the arrow IN indicates the direction inside the building in the horizontal direction of the building unit U, the arrow OUT indicates the direction outside the building in the horizontal direction, and the arrow UP indicates the direction above the building.

外壁下地材11は、合板、パーティクルボードなどの構造用の面材により形成され、建物ユニットUの躯体となる枠材15にドリル螺子92や釘などにより固定されている。 The outer wall base material 11 is formed of structural facing materials such as plywood and particle board, and is fixed to the frame material 15 which is the skeleton of the building unit U by drill screws 92, nails, and the like.

胴縁12は、断面が矩形状の棒状の木材であり、上下方向に延在され、水平方向に間隔を空けて複数並設され、外壁下地材11の表面にドリル螺子92や釘などにより固定されている。 The furring strip 12 is a rod-shaped wood having a rectangular cross section, extends in the vertical direction, is arranged side by side at intervals in the horizontal direction, and is fixed to the surface of the outer wall base material 11 with a drill screw 92 or a nail. Has been done.

外壁パネル13は、建物内側のベース板13aと、建物外側のタイル13bとを備える。ベース板13aは、タイル13bを支持する板材であり、木質セメント板などの防火性および断熱性を有した板材などが用いられ、胴縁12にドリル螺子92などにより固定されている。また、タイル13bは、ベース板13aの表面に、上下方向および水平方向に所定の間隔で並設されている。 The outer wall panel 13 includes a base plate 13a inside the building and tiles 13b outside the building. The base plate 13a is a plate material that supports the tile 13b, and a plate material having fire resistance and heat insulating properties such as a wood cement plate is used, and is fixed to the furring strip 12 by a drill screw 92 or the like. Further, the tiles 13b are arranged side by side on the surface of the base plate 13a at predetermined intervals in the vertical direction and the horizontal direction.

なお、外壁下地材11とベース板13a との間には、胴縁12の厚み分の通気層16が外壁10の上下方向に形成されている。 A ventilation layer 16 having a thickness of the furring strip 12 is formed between the outer wall base material 11 and the base plate 13a in the vertical direction of the outer wall 10.

(屋根の構成)
次に、屋根RFの構成について説明する。
屋根RFは、陸屋根と称される屋根であり、平らな屋根本体20と、この屋根本体20の外周を囲む庇部30とを備える。なお、前述のように、庇部30の建物外側の方向の外周面は、水平方向で、外壁10の表面(建物外側の面)と略同一位置、あるいは、僅かに建物内側の位置に配置されている。
(Roof composition)
Next, the configuration of the roof RF will be described.
The roof RF is a roof called a flat roof, and includes a flat roof main body 20 and an eaves portion 30 surrounding the outer periphery of the roof main body 20. As described above, the outer peripheral surface of the eaves 30 in the outer direction of the building is arranged in the horizontal direction at substantially the same position as the surface of the outer wall 10 (the outer surface of the building) or slightly inside the building. ing.

屋根本体20は、屋根梁21、垂木22、屋根材23を備える。
屋根梁21は、屋根RFを形成するユニットの外周部に設けられ、建物ユニットUの上部に設けられた天井梁17に固定支持されている。そして、垂木22は、対向する一対の屋根梁21、21に架け渡されている。
The roof body 20 includes a roof beam 21, rafters 22, and a roofing material 23.
The roof beam 21 is provided on the outer peripheral portion of the unit forming the roof RF, and is fixedly supported by the ceiling beam 17 provided on the upper part of the building unit U. The rafters 22 are bridged over a pair of roof beams 21 and 21 that face each other.

屋根材23は、垂木22に支持されて、上下方向で屋根梁21の上端部よりも低い位置に配置され、かつ、水平方向で屋根梁21よりも建物内側の位置に配置され、野地板23aとルーフィング23bと溝板23cとを備える。 The roofing material 23 is supported by the rafters 22 and is arranged at a position lower than the upper end of the roof beam 21 in the vertical direction and at a position inside the building than the roof beam 21 in the horizontal direction. The roofing 23b and the groove plate 23c are provided.

野地板23aは、屋根RFの支持材であり、木製の合板で形成され、垂木22に支持されている。ルーフィング23bは、防水用のシート材であり、例えば、フェルト状の原紙にアスファルトを浸透、被覆し表裏面に鋼物質粉末を付着させたものが使用され、野地板23aの上面に敷設されている。溝板23cは、鋼板などの金属板を折曲して形成されており、複数のものをルーフィング23bの上面に屋根勾配に直交する方向に並設されている。 The field board 23a is a support material for the roof RF, is formed of wooden plywood, and is supported by the rafters 22. The roofing 23b is a waterproof sheet material, for example, a felt-like base paper infiltrated with asphalt, coated with steel substance powder on the front and back surfaces, and laid on the upper surface of the field board 23a. .. The groove plate 23c is formed by bending a metal plate such as a steel plate, and a plurality of the groove plates 23c are arranged side by side on the upper surface of the roofing 23b in a direction orthogonal to the roof slope.

(庇部の構成)
次に、庇部30の構成について説明する。
庇部30は、水上カバー40と笠木50と庇ブラケット60とを備える。
(Structure of eaves)
Next, the configuration of the eaves portion 30 will be described.
The eaves portion 30 includes a water cover 40, a cap tree 50, and an eaves bracket 60.

水上カバー40は、鋼板などの金属板製に形成されで、水平方向で、建物内側の方向の端縁部が下方に折曲されて、溝板23cの外周端縁部に当接されている。また、水上カバー40の建物外側方向の縁部は、外壁下地材11よりも建物外側の位置に配置されて、後述する庇ブラケット60の水上カバー支持片63の上面に当接して固定されている。 The water cover 40 is made of a metal plate such as a steel plate, and the edge portion in the horizontal direction toward the inside of the building is bent downward and is in contact with the outer peripheral edge portion of the groove plate 23c. .. Further, the edge of the water cover 40 in the outside direction of the building is arranged at a position outside the building with respect to the outer wall base material 11, and is fixed in contact with the upper surface of the water cover support piece 63 of the eaves bracket 60 described later. ..

また、水上カバー40は、屋根梁21および外壁下地材11の上面に敷設された矩形断面形状の換気用スペーサ31に下面を支持され、屋根梁21および外壁下地材11との間に、換気用スペーサ31の厚さに相当する換気用の隙間を有している。 Further, the lower surface of the water cover 40 is supported by a ventilation spacer 31 having a rectangular cross-sectional shape laid on the upper surface of the roof beam 21 and the outer wall base material 11, and is used for ventilation between the roof beam 21 and the outer wall base material 11. It has a ventilation gap corresponding to the thickness of the spacer 31.

さらに、水上カバー40の建物内側の端縁部には、L字断面形状に形成されたL字片41が接続され、このL字片41は、下端の水平部分がブラインドリベット91により溝板23cに固定されている。なお、水上カバー40とL字片41との間は、防止テープ24によりシールされている。また、屋根材23のルーフィング23bは、水上カバー40の下側に設けられた略ム断面形状に形成されて、換気用スペーサ31に固定された支持片42に沿って立ち上げられて、換気用スペーサ31の上面に沿って設けられている。これにより、屋根本体20の外周縁のシールがなされている。 Further, an L-shaped piece 41 formed in an L-shaped cross-sectional shape is connected to the edge of the water cover 40 inside the building, and the horizontal portion of the lower end of the L-shaped piece 41 is grooved by a blind rivet 91. It is fixed to. The water cover 40 and the L-shaped piece 41 are sealed with a preventive tape 24. Further, the roofing 23b of the roofing material 23 is formed in a substantially cross-sectional shape provided under the water cover 40, and is raised along the support piece 42 fixed to the ventilation spacer 31 for ventilation. It is provided along the upper surface of the spacer 31. As a result, the outer peripheral edge of the roof body 20 is sealed.

次に、庇ブラケット60の構成および取付位置について説明する。
まず、庇ブラケット60の取付位置を説明する。
外壁下地材11は、上端が、屋根梁21と同じ高さに配置され、換気用スペーサ31を下方から支持している。一方、外壁パネル13は、その上端の位置が外壁下地材11の上端の位置よりも低い位置に配置され、外壁下地材11の上端部には、建物外側に露出した開放面11aを備えている。なお、胴縁12の上端も外壁パネル13の上端と同じ高さに配置されている。
Next, the configuration and mounting position of the eaves bracket 60 will be described.
First, the mounting position of the eaves bracket 60 will be described.
The upper end of the outer wall base material 11 is arranged at the same height as the roof beam 21, and supports the ventilation spacer 31 from below. On the other hand, the outer wall panel 13 is arranged at a position where the upper end position is lower than the upper end position of the outer wall base material 11, and the upper end portion of the outer wall base material 11 is provided with an open surface 11a exposed to the outside of the building. .. The upper end of the furring strip 12 is also arranged at the same height as the upper end of the outer wall panel 13.

そして、庇ブラケット60は、外壁パネル13の上端面との間に、間隔を空けた位置で、外壁下地材11の開放面11aにドリル螺子92により固定されている。 The eaves bracket 60 is fixed to the open surface 11a of the outer wall base material 11 by a drill screw 92 at a position spaced apart from the upper end surface of the outer wall panel 13.

次に、庇ブラケット60の構成について説明する。
庇ブラケット60は、ベース用中空部61と、笠木支持用中空部62と、水上カバー支持片63と、笠木支持片64とを備える。
Next, the configuration of the eaves bracket 60 will be described.
The eaves bracket 60 includes a hollow portion 61 for a base, a hollow portion 62 for supporting a cap tree, a water cover support piece 63, and a cap tree support piece 64.

ベース用中空部61は、略台形の水平方向に長い筒状に形成され、外壁下地材11の開放面11aに面当接され、ドリル螺子92により外壁下地材11および枠材15に固定されている。 The hollow portion 61 for the base is formed in a substantially trapezoidal shape that is long in the horizontal direction, is surface-contacted with the open surface 11a of the outer wall base material 11, and is fixed to the outer wall base material 11 and the frame material 15 by a drill screw 92. There is.

笠木支持用中空部62は、ベース用中空部61よりも上下に長い筒状に形成され、下端部がベース用中空部61と一体に連結され、上端は水上カバー40の設置高さと略同じ高さに配置されている。そして、笠木支持用中空部62の上下方向中間部には、上方に開口された係止溝62aが形成されている。 The Kasagi support hollow portion 62 is formed in a tubular shape that is vertically longer than the base hollow portion 61, the lower end portion is integrally connected to the base hollow portion 61, and the upper end is substantially the same height as the installation height of the water cover 40. It is placed in the cover. A locking groove 62a opened upward is formed in the vertical intermediate portion of the hollow portion 62 for supporting the cap tree.

水上カバー支持片63は、笠木支持用中空部62の上端から、建物内側方向に略水平に延在された板状の部材である。この水上カバー支持片63の上面に水上カバー40が当接された状態で笠木50と共にリベット93により固定されている。 The water cover support piece 63 is a plate-shaped member extending substantially horizontally toward the inside of the building from the upper end of the hollow portion 62 for supporting the cap tree. The water cover 40 is fixed to the upper surface of the water cover support piece 63 together with the cap tree 50 by a rivet 93 in a state of being in contact with the water cover 40.

笠木支持片64は、笠木支持用中空部62の上端から上方に立ち上げられた立上片62bの上端部と一体に形成され、立上片62bから建物外側の方向に延在された外側片64aと建物内側の方向に延在された内側片64bとにより形成されている。そして、外側片64aは、上方に凸状の凸片64cが形成されている。また、内側片64bは、建物内側に向かって下がる傾斜が与えられ、水上カバー40を上から押さえている。 The Kasagi support piece 64 is formed integrally with the upper end of the rising piece 62b raised upward from the upper end of the Kasagi supporting hollow portion 62, and extends from the rising piece 62b toward the outside of the building. It is formed by 64a and an inner piece 64b extending in the direction of the inside of the building. The outer piece 64a is formed with a convex piece 64c that is convex upward. Further, the inner piece 64b is given an inclination that descends toward the inside of the building, and holds the water cover 40 from above.

次に、笠木50について説明する。
笠木50は、壁側カバー部51と屋根側カバー部52とを一体に連続させて略L字断面状に形成されている。
Next, the Kasagi 50 will be described.
The Kasagi 50 is formed in a substantially L-shaped cross section by integrally connecting the wall-side cover portion 51 and the roof-side cover portion 52.

壁側カバー部51
外壁10の外壁下地材11を水平方向で建物外側から覆って、庇部30の建物外側部分を形成する壁側カバー部51と、庇部30の上面を形成する屋根側カバー部52とを一体に連続させて略L字断面状に形成されている。
Wall side cover 51
The wall-side cover portion 51 that horizontally covers the outer wall base material 11 of the outer wall 10 from the outside of the building to form the outer side portion of the eaves portion 30 and the roof-side cover portion 52 that forms the upper surface of the eaves portion 30 are integrated. It is formed in a substantially L-shaped cross section in succession to the eaves.

壁側カバー部51は、外壁10の外壁下地材11を水平方向で建物外側から覆うもので、下端部には、下方に湾曲して凸状に形成された凸部51aと、建物内側の方向に延在された下側片51bとが一体に連続して形成されている。また、壁側カバー部51の上下方向の中間部であって、建物内側の面には、前記係止溝62aに挿入されて、笠木50の水平方向で建物内外方向および上下方向の位置を規定する係止片51cが形成されている。 The wall-side cover portion 51 covers the outer wall base material 11 of the outer wall 10 in the horizontal direction from the outside of the building, and at the lower end portion, a convex portion 51a formed in a convex shape curved downward and a direction inside the building. The lower piece 51b extending to the above is integrally and continuously formed. Further, it is an intermediate portion in the vertical direction of the wall-side cover portion 51, and is inserted into the locking groove 62a on the inner surface of the building to define the positions in the horizontal direction of the Kasagi 50 in the internal / external direction and the vertical direction of the building. The locking piece 51c is formed.

屋根側カバー部52は、庇部30の上面を形成するもので、建物内側の端部に下方に折曲されたフランジ部52aと、前記庇ブラケット60の凸片64cを水平方向に係合可能な上方に凸状の溝部52bとを備える。そして、屋根側カバー部52が、ビスにより、水上カバー支持片63に水上カバー40と共に固定されている。 The roof side cover portion 52 forms the upper surface of the eaves portion 30, and the flange portion 52a bent downward at the end inside the building can be horizontally engaged with the convex piece 64c of the eaves bracket 60. It is provided with a convex groove portion 52b on the upper side. Then, the roof side cover portion 52 is fixed to the water cover support piece 63 together with the water cover 40 by screws.

(水切部材の構成)
次に、水切部材80について説明する。
水切部材80は、笠木50の壁側カバー部51の下端の下側片51bに取り付けられている。
(Structure of drain member)
Next, the drainage member 80 will be described.
The drain member 80 is attached to the lower piece 51b at the lower end of the wall-side cover portion 51 of the Kasagi 50.

水切部材80は、外壁10との間に換気路(二点鎖線の矢印Vpにより示す)を形成するもので、縦壁部82と上壁部81とにより略L字断面形状に形成されている。そして、水切部材80は、換気路を形成するにあたり、外壁下地材11および外壁パネル13との間に下記の間隔La、Lb、Lcを有する位置で、笠木50に取り付けられている。 The drainage member 80 forms a ventilation path (indicated by the arrow Vp of the alternate long and short dash line) with the outer wall 10, and is formed in a substantially L-shaped cross section by the vertical wall portion 82 and the upper wall portion 81. .. The drain member 80 is attached to the cap tree 50 at a position having the following intervals La, Lb, and Lc between the outer wall base material 11 and the outer wall panel 13 in forming the ventilation path.

すなわち、水切部材80の上壁部81は、建物内側の先端と、外壁下地材11との間に水平方向の間隔Laを有し、かつ、下面と、外壁パネル13の上端面との間に上下方向の間隔Lbを有する。さらに、縦壁部82の建物内側の面と、外壁パネル13の表面との間に水平方向の間隔Lcを有する。 That is, the upper wall portion 81 of the drainage member 80 has a horizontal distance La between the tip inside the building and the outer wall base material 11, and is between the lower surface and the upper end surface of the outer wall panel 13. It has a vertical spacing Lb. Further, there is a horizontal distance Lc between the inner surface of the vertical wall portion 82 and the surface of the outer wall panel 13.

そして、間隔Laを設けるにあたっては、図3に示すように、外壁下地材11の上部に、間隔Laと同寸法の厚みを有した板状のスペーサ70を固定し、水切部材80の上壁部81の先端をスペーサ70に当接させた状態で笠木50に取り付けている。 Then, in providing the interval La, as shown in FIG. 3, a plate-shaped spacer 70 having the same thickness as the interval La is fixed to the upper portion of the outer wall base material 11, and the upper wall portion of the drain member 80 is provided. The tip of 81 is attached to the cap tree 50 in a state of being in contact with the spacer 70.

また、間隔Lbを設けるには、笠木50の凸部51aの下端と、外壁パネル13の上端との上下方向の間隔が、間隔Lbと上壁部81の厚さを足した寸法とし、上壁部81を凸部51aに当接させてい。なお、水切部材80の笠木50への取付は、図3に示すように、上壁部81に、その長手方向に所定の間隔で設けられた取付部83を、ドリルビス94により下側片51bに固定している。また、取付部83は、下側片51bの下面と凸部51aの下端との上下方向寸法分の厚さが与えられている。 Further, in order to provide the gap Lb, the vertical distance between the lower end of the convex portion 51a of the cap tree 50 and the upper end of the outer wall panel 13 is set to the dimension obtained by adding the thickness of the gap Lb and the upper wall portion 81 to the upper wall. The portion 81 is brought into contact with the convex portion 51a. As shown in FIG. 3, the drainage member 80 is attached to the cap tree 50 by attaching attachment portions 83 provided on the upper wall portion 81 at predetermined intervals in the longitudinal direction to the lower piece 51b by a drill screw 94. It is fixed. Further, the mounting portion 83 is provided with a thickness corresponding to the vertical dimension of the lower surface of the lower piece 51b and the lower end of the convex portion 51a.

そして、間隔Lcを設けるには、上壁部81の建物内外方向の幅寸法を、その先端を外壁下地材11に取り付けたスペーサ70に当接させたときに、縦壁部82が、外壁パネル13から水平方向で間隔Lcだけ建物外側に配置する寸法としている。 Then, in order to provide the interval Lc, when the width dimension of the upper wall portion 81 in the building inside / outside direction is brought into contact with the spacer 70 whose tip is attached to the outer wall base material 11, the vertical wall portion 82 causes the outer wall panel. The dimensions are such that they are arranged outside the building by an interval Lc in the horizontal direction from 13.

(実施の形態1の作用効果)
以下に、実施の形態1の作用効果を列挙する。
(1)実施の形態1の屋根の換気構造は、建物Dの屋根RFとして、屋根本体20の外周が庇部30に囲まれた陸屋根を備える。また、建物Dの庇部30と、その下方位置に設けられた外壁10との間に沿って換気用の隙間(凸部51aと外壁パネル13の上端面との間の隙間)が設けられ、換気用の隙間の上部に沿って板状の水切部材80が設けられている。さらに、水切部材80は、水平方向で庇部30および換気用の隙間よりも建物外側に突出し、外壁10に対して上下方向に第1の換気用の間隔Lbを空けて配置された上壁部81と、上壁部81から、換気用の隙間の下端位置よりも下方に延在され、外壁10に対して水平方向に第2の換気用の間隔Lcを空けて配置されて、外壁10との間に下方を向いた換気用の開口を形成した縦壁部82とを備える。そして、換気用の開口から、水切部材80と外壁10との間の第1、第2の換気用の間隔を空けた部分を通り、さらに、庇部30を介して屋根RFの小屋裏に至る二点鎖線の矢印Vpにより示す換気路が形成されている。
(Action and effect of Embodiment 1)
The effects of the first embodiment are listed below.
(1) The ventilation structure of the roof of the first embodiment includes a flat roof in which the outer periphery of the roof body 20 is surrounded by the eaves 30 as the roof RF of the building D. Further, a ventilation gap (a gap between the convex portion 51a and the upper end surface of the outer wall panel 13) is provided along the eaves portion 30 of the building D and the outer wall 10 provided at a position below the eaves portion 30. A plate-shaped drainage member 80 is provided along the upper part of the ventilation gap. Further, the drainage member 80 projects horizontally from the eaves 30 and the ventilation gap to the outside of the building, and is arranged with a first ventilation interval Lb in the vertical direction with respect to the outer wall 10. 81 and the upper wall portion 81 extend below the lower end position of the ventilation gap, and are arranged horizontally with respect to the outer wall 10 with a second ventilation interval Lc, and are arranged with the outer wall 10. A vertical wall portion 82 having a downward-facing ventilation opening is provided between the two. Then, the ventilation opening passes through the first and second ventilation gaps between the drain member 80 and the outer wall 10, and further reaches the back of the roof RF hut through the eaves 30. The ventilation path indicated by the arrow Vp of the alternate long and short dash line is formed.

したがって、二点鎖線の矢印Vpにより示す換気路を介して小屋裏の換気を行うことができる。また、降雪時には、屋根RFや水切部材80の上壁部81の上に積雪しても、換気路の建物外側の開口は、下方を向き、しかも、外壁10の外壁パネル13の上端部が、上方および水平方向を水切部材80により覆われているため、積雪で塞がれることがない。また、仮に、雪解けの水が、水切部材80を伝って落下する際には、外壁10から建物外側に離れた縦壁部82から落下するため、氷柱が生じたとしても、換気路の開口が全て塞がれることもない。よって、降雪の多い寒冷地であっても、冬季の換気性能を確保できる。 Therefore, the back of the cabin can be ventilated through the ventilation path indicated by the arrow Vp of the alternate long and short dash line. Further, when it snows, even if snow accumulates on the roof RF or the upper wall portion 81 of the drainage member 80, the opening of the ventilation path on the outside of the building faces downward, and the upper end portion of the outer wall panel 13 of the outer wall 10 is formed. Since the upper part and the horizontal direction are covered with the drainage member 80, it is not blocked by snow. Further, if the thawed water falls along the drainage member 80, it falls from the vertical wall portion 82 separated from the outer wall 10 to the outside of the building, so that even if an icicle is formed, the opening of the ventilation path is opened. Not all are blocked. Therefore, the ventilation performance in winter can be ensured even in a cold region with a lot of snowfall.

特に、本実施の形態1では、外壁10の建物外側の面の位置と、庇部30の建物外側の面の位置とを略一致させて、すっきりとした外観としている。このような構造では、降雪時に、外壁10と庇部30との間に設けた換気用の隙間が、雪で塞がれるおそれがあるが、本実施の形態1では、上記のように換気性能を確保することができ、建物Dの設計自由度が向上するという効果も得ることができる。 In particular, in the first embodiment, the position of the outer surface of the building of the outer wall 10 and the position of the outer surface of the building of the eaves 30 are substantially matched to obtain a neat appearance. In such a structure, when it snows, the ventilation gap provided between the outer wall 10 and the eaves 30 may be closed by snow. However, in the first embodiment, the ventilation performance is as described above. Can be secured, and the effect of improving the degree of freedom in designing the building D can also be obtained.

(2)実施の形態2の屋根の換気構造では、建物Dの庇部30の下方位置に設けられた外壁10は、建物内側に配置された外壁下地材11と、外壁下地材11の建物外側を覆って設けられ、外壁下地材11との間に通気層16を備える外壁パネル13と、を備える。そして、外壁パネル13の上端部が、外壁下地材11の上端部および庇部30よりも低い位置に配置されて、外壁パネル13の上端部と庇部30との間に、換気用の隙間が形成されている。さらに、上壁部81と外壁パネル13の上端面との間に、第1の換気用の間隔Lbが空けられ、縦壁部82と外壁パネル13の上部の建物外側面との間に、第2の換気用の間隔Lcが空けられている。 (2) In the ventilation structure of the roof of the second embodiment, the outer wall 10 provided at the lower position of the eaves 30 of the building D is the outer wall base material 11 arranged inside the building and the outer wall base material 11 outside the building. The outer wall panel 13 is provided so as to cover the outer wall base material 11 and has a ventilation layer 16 between the outer wall base material 11. Then, the upper end portion of the outer wall panel 13 is arranged at a position lower than the upper end portion of the outer wall base material 11 and the eaves portion 30, and a gap for ventilation is provided between the upper end portion of the outer wall panel 13 and the eaves portion 30. It is formed. Further, a first ventilation interval Lb is provided between the upper wall portion 81 and the upper end surface of the outer wall panel 13, and a first ventilation interval Lb is provided between the vertical wall portion 82 and the upper building outer surface of the outer wall panel 13. There is an interval Lc for ventilation of 2.

したがって、上記(1)に記載した二点鎖線の矢印Vpにより示す換気路を、既存の外壁10の小改良により、低コストでの実現が可能である。 Therefore, the ventilation path indicated by the arrow Vp of the alternate long and short dash line described in (1) above can be realized at low cost by making minor improvements to the existing outer wall 10.

(3)実施の形態1の屋根の換気構造では、水切部材80は、上壁部81が、外壁下地材11に取り付けられたスペーサ70に建物内側の先端を当接されて、水平方向の位置決めされて庇部30の笠木50の下端部に取り付けられている。この位置決めにより、上壁部81と外壁下地材11との間に第3の間隔Laを空けるとともに、縦壁部82と外壁パネル13との間に第2の換気用の間隔Lbを空ける位置に配置されている。 (3) In the roof ventilation structure of the first embodiment, the drainage member 80 is positioned in the horizontal direction by the upper wall portion 81 having the tip of the inside of the building abutted against the spacer 70 attached to the outer wall base material 11. It is attached to the lower end of the Kasagi 50 of the eaves 30. By this positioning, a third space La is provided between the upper wall portion 81 and the outer wall base material 11, and a second ventilation space Lb is provided between the vertical wall portion 82 and the outer wall panel 13. Have been placed.

したがって、水切部材80の上壁部81と外壁10の外壁下地材11との間に、二点鎖線の矢印Vpにより示す換気路を確保できる。 Therefore, the ventilation path indicated by the arrow Vp of the alternate long and short dash line can be secured between the upper wall portion 81 of the drainage member 80 and the outer wall base material 11 of the outer wall 10.

(4)実施の形態1の建物Dは、上記(1)〜(3)に記載した屋根の換気構造を有する。
したがって、上記(1)〜(3)に記載した効果を有する屋根の換気構造を備える建物Dを提供することができる。
(4) The building D of the first embodiment has the ventilation structure of the roof described in (1) to (3) above.
Therefore, it is possible to provide a building D having a roof ventilation structure having the effects described in (1) to (3) above.

(他の実施の形態)
次に、本開示の屋根の換気構造の他の実施の形態について説明する。
なお、他の実施の形態の説明において、実施の形態1と共通する構成にはその構成と同じ符号を付して説明を省略し、相違点のみ説明する。
(Other embodiments)
Next, other embodiments of the roof ventilation structure of the present disclosure will be described.
In the description of the other embodiments, the same components as those of the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described.

(実施の形態2)
実施の形態2の屋根の換気構造は、水切部材280の形状および取付状態が、実施の形態1の水切部材80と異なる。
(Embodiment 2)
The ventilation structure of the roof of the second embodiment is different from the drainage member 80 of the first embodiment in the shape and mounting state of the drainage member 280.

水切部材280は、金属板材により形成され、実施の形態1と同様の上壁部281および縦壁部282を備える。そして、水切部材280は、図6A、図6Bに示すように、上壁部281において、縦壁部282を設けたのと反対側の端部であって、取付時に建物内側の端縁から下方に垂下した取付片283が一体に形成されている。この取付片283は、水切部材280の長手方向に所定の間隔を空けて設けられている。なお、取付片283同士の水平方向の間隔は、外壁10の胴縁12の水平方向の間隔に一致する寸法としている。 The drainage member 280 is formed of a metal plate and includes an upper wall portion 281 and a vertical wall portion 282 similar to those in the first embodiment. Then, as shown in FIGS. 6A and 6B, the drainage member 280 is an end portion of the upper wall portion 281 opposite to the vertical wall portion 282 provided, and is downward from the edge inside the building at the time of installation. The mounting piece 283 that hangs down is integrally formed. The mounting pieces 283 are provided at predetermined intervals in the longitudinal direction of the drainage member 280. The horizontal spacing between the mounting pieces 283 is set to match the horizontal spacing of the furring strip 12 of the outer wall 10.

次に、水切部材280の取付状態について説明する。
図4、図5に示すように、水切部材280は、実施の形態1と同様に、外壁パネル13の上端面との間に間隔Lbを空けることができる高さに配置して、取付片283を胴縁12にドリル螺子95により固定されている。
Next, the mounting state of the drainage member 280 will be described.
As shown in FIGS. 4 and 5, the drainage member 280 is arranged at a height at which a gap Lb can be provided between the drainage member 280 and the upper end surface of the outer wall panel 13, as in the first embodiment, and the mounting piece 283 is arranged. Is fixed to the furring strip 12 by a drill screw 95.

したがって、上壁部281の建物内側の端面と、外壁下地材11との間には、胴縁12の外壁下地材11からの高さに相当する、矢印Vpにより示す換気路を形成するための間隔Laを確保することができる。 Therefore, between the end surface of the upper wall portion 281 inside the building and the outer wall base material 11, a ventilation path indicated by an arrow Vp, which corresponds to the height of the furring strip 12 from the outer wall base material 11, is formed. The interval La can be secured.

また、上壁部281の建物内外方向の寸法と、外壁パネル13の厚さ寸法との差に基づいて、縦壁部282と外壁パネル13の外表面(建物外側面)との間に、矢印Vpにより示す換気路を形成するための間隔Lcを確保することができる。 Further, based on the difference between the dimension of the upper wall portion 281 in the inside / outside direction of the building and the thickness dimension of the outer wall panel 13, an arrow is formed between the vertical wall portion 282 and the outer surface (outer surface of the building) of the outer wall panel 13. The interval Lc for forming the ventilation path indicated by Vp can be secured.

したがって、実施の形態2の屋根の換気構造にあっても、実施の形態1と同様の換気路を形成し、降雪の多い寒冷地であっても、冬季の換気性能を確保できる。 Therefore, even in the ventilation structure of the roof of the second embodiment, the same ventilation path as in the first embodiment can be formed, and the ventilation performance in winter can be ensured even in a cold region with a lot of snowfall.

以上、図面を参照して、本開示の屋根の換気構造を実施するための形態を詳述してきたが、具体的な構成は、実施の形態に限らず、本発明の要旨を逸脱しない程度の設計的変更は、本発明に含まれる。 As described above, the embodiment for implementing the ventilation structure of the roof of the present disclosure has been described in detail with reference to the drawings, but the specific configuration is not limited to the embodiment and does not deviate from the gist of the present invention. Design changes are included in the present invention.

例えば、実施の形態では、庇部の一例を示したが、庇部の構成や形状は、本発明の要旨に含まれるものではなく、他の形状や構成とすることができる。要は。庇部は、外壁との間に、換気用の隙間を有するものであればよい。 For example, in the embodiment, an example of the eaves portion is shown, but the configuration and shape of the eaves portion are not included in the gist of the present invention, and other shapes and configurations can be used. In short. The eaves may have a ventilation gap between them and the outer wall.

10 外壁
11 外壁下地材
13 外壁パネル
16 通気層
20 屋根本体
30 庇部
50 笠木
70 スペーサ
80 水切部材
81 上壁部
82 縦壁部
280 水切部材
281 上壁部
282 縦壁部
D 建物
La 第3の間隔
Lb (第1の換気用の)間隔
Lc (第2の換気用の)間隔
RF 屋根
10 Outer wall 11 Outer wall base material 13 Outer wall panel 16 Ventilation layer 20 Roof body 30 Eaves 50 Kasagi 70 Spacer 80 Draining member 81 Upper wall part 82 Vertical wall part 280 Draining member 281 Upper wall part 282 Vertical wall part D Building La 3rd Spacing Lb (for first ventilation) Spacing Lc (for second ventilation) Spacing RF roof

Claims (4)

建物の屋根として、屋根本体の外周が庇部に囲まれた陸屋根を備え、
前記建物の前記庇部と、その下方位置に設けられた外壁との間に沿って換気用の隙間が設けられ、
前記換気用の隙間の上部に沿って板状の水切部材が設けられ、
前記水切部材は、水平方向で前記庇部および前記換気用の隙間よりも建物外側に突出し、前記外壁に対して上下方向に第1の換気用の間隔を空けて配置された上壁部と、前記上壁部から、前記換気用の隙間の下端位置よりも下方に延在され、前記外壁に対して水平方向に第2の換気用の間隔を空けて配置されて、前記外壁との間に下方を向いた換気用の開口を形成した縦壁部とを備え、
前記換気用の開口から、前記水切部材と前記外壁との間の前記第1、第2の換気用の間隔を空けた部分を通り、さらに、前記庇部を介して前記屋根の小屋裏に至る換気路が形成されている屋根の換気構造。
As the roof of the building, it has a flat roof with the outer circumference of the roof body surrounded by eaves.
A ventilation gap is provided along the eaves of the building and the outer wall provided below the eaves.
A plate-shaped drainage member is provided along the upper part of the ventilation gap.
The drainage member projects horizontally from the eaves and the ventilation gap to the outside of the building, and is arranged with a first ventilation interval in the vertical direction with respect to the outer wall. From the upper wall portion, it extends below the lower end position of the ventilation gap, is arranged horizontally with respect to the outer wall at a second ventilation interval, and is placed between the upper wall portion and the outer wall. It has a vertical wall with a downward-facing ventilation opening.
The ventilation opening passes through the first and second ventilation gaps between the drainage member and the outer wall, and further reaches the back of the roof hut through the eaves. Ventilation structure of the roof where the ventilation path is formed.
請求項1に記載の屋根の換気構造において、
前記建物の前記庇部の下方位置に設けられた外壁は、建物内側に配置された外壁下地材と、前記外壁下地材の建物外側を覆って設けられ、前記外壁下地材との間に通気層を備える外壁パネルと、を備え、
前記外壁パネルの上端部が、前記外壁下地材の上端部および前記庇部よりも低い位置に配置されて、前記外壁パネルの上端部と前記庇部との間に、前記換気用の隙間が形成され、
前記上壁部と前記外壁パネルの上端面との間に、前記第1の換気用の間隔が空けられ、
前記縦壁部と前記外壁パネルの上部の建物外側面との間に、前記第2の換気用の間隔が空けられている屋根の換気構造。
In the roof ventilation structure according to claim 1,
The outer wall provided at a position below the eaves portion of the building is provided so as to cover the outer wall base material arranged inside the building and the outside of the building of the outer wall base material, and a ventilation layer is provided between the outer wall base material. With an outer wall panel,
The upper end portion of the outer wall panel is arranged at a position lower than the upper end portion of the outer wall base material and the eaves portion, and a gap for ventilation is formed between the upper end portion of the outer wall panel and the eaves portion. Being done
A space for the first ventilation is provided between the upper wall portion and the upper end surface of the outer wall panel.
A ventilation structure for a roof in which a space for the second ventilation is provided between the vertical wall portion and the outer surface of the building above the outer wall panel.
請求項2に記載の屋根の換気構造において、
前記水切部材は、前記上壁部が、前記外壁下地材に取り付けられたスペーサに建物内側の先端が当接されて前記外壁との間に第3の間隔を空けた状態で水平方向の位置決めをされて前記庇部の下端部に取り付けられている屋根の換気構造。
In the roof ventilation structure according to claim 2.
The drainage member is positioned in the horizontal direction with the upper wall portion abutting on the spacer attached to the outer wall base material and having a third space between the upper wall portion and the outer wall. Ventilation structure of the roof that is attached to the lower end of the eaves.
請求項2に記載の屋根の換気構造において、
前記水切部材は、前記上壁部から下方に延在された取付片を備え、
前記取付片が、前記外壁パネルに取り付けられた胴縁に固定されて、前記上壁部の先端と前記外壁下地材との間に、前記通気層に相当する間隔を空けて取り付けられている屋根の換気構造。
In the roof ventilation structure according to claim 2.
The drainage member includes a mounting piece extending downward from the upper wall portion.
The roof is fixed to the furring strip attached to the outer wall panel, and is attached between the tip of the upper wall portion and the outer wall base material at a distance corresponding to the ventilation layer. Ventilation structure.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0535908U (en) * 1991-10-15 1993-05-18 ミサワホーム株式会社 Eaves ventilation hardware
JP2000145064A (en) * 1998-11-04 2000-05-26 Sekisui Chem Co Ltd Coping structure, and building ventilation structure
JP2007231553A (en) * 2006-02-28 2007-09-13 Daiwa House Ind Co Ltd Ventilator, installation method of ventilator and ventilation method of indoor space
JP2008190234A (en) * 2007-02-06 2008-08-21 Misawa Homes Co Ltd Attic space ventilation structure and method of forming attic space ventilation structure
JP2011058234A (en) * 2009-09-09 2011-03-24 Sekisui Chem Co Ltd Ventilation structure and building
JP2013144901A (en) * 2012-01-16 2013-07-25 Sekisui Chem Co Ltd Ventilation structure and building

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0535908U (en) * 1991-10-15 1993-05-18 ミサワホーム株式会社 Eaves ventilation hardware
JP2000145064A (en) * 1998-11-04 2000-05-26 Sekisui Chem Co Ltd Coping structure, and building ventilation structure
JP2007231553A (en) * 2006-02-28 2007-09-13 Daiwa House Ind Co Ltd Ventilator, installation method of ventilator and ventilation method of indoor space
JP2008190234A (en) * 2007-02-06 2008-08-21 Misawa Homes Co Ltd Attic space ventilation structure and method of forming attic space ventilation structure
JP2011058234A (en) * 2009-09-09 2011-03-24 Sekisui Chem Co Ltd Ventilation structure and building
JP2013144901A (en) * 2012-01-16 2013-07-25 Sekisui Chem Co Ltd Ventilation structure and building

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