JP6048879B2

JP6048879B2 - Roof structure

Info

Publication number: JP6048879B2
Application number: JP2013003116A
Authority: JP
Inventors: 恵理子佐伯
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2013-01-11
Filing date: 2013-01-11
Publication date: 2016-12-21
Anticipated expiration: 2033-01-11
Also published as: JP2014134040A

Description

本発明は、屋根構造に関する。 The present invention relates to a roof structure.

特許文献１には折板屋根の端部に面戸が固定された屋根構造が開示されている。 Patent Document 1 discloses a roof structure in which a face door is fixed to an end portion of a folded plate roof.

特開２０１０−３７８５４公報JP 2010-37854 A

ところで、特許文献１等の屋根構造にあっては、雨水が屋根材の上面（屋根面）を軒側に向けて流れた際に、この雨水が屋根材の軒側端部から屋外側に大きく飛び出す可能性がある。そして、従来の屋根構造では、前述のように雨水が屋外側に大きく飛び出すと、軒から離れた箇所に雨水がかかる恐れがあり、また雨水が軒樋で受けきれずに軒下に居る人にかかる恐れがある。 By the way, in the roof structure of Patent Document 1 or the like, when rainwater flows toward the eaves side of the top surface (roof surface) of the roofing material, the rainwater greatly increases from the eaves side end of the roofing material to the outdoor side. There is a possibility of jumping out. And with the conventional roof structure, if rainwater jumps to the outdoor side as mentioned above, it may fall on the place away from the eaves, and rainwater will not be received by the eaves and it will be applied to people under the eaves There is a fear.

本発明は、これら事情に鑑みてなされたものであって、凹凸屋根上を流れる雨水の屋外側への飛び出しを軽減した屋根構造を提供することを課題とする。 This invention is made | formed in view of these circumstances, Comprising: It aims at providing the roof structure which reduced the jumping out of the rain water which flows on an uneven | corrugated roof to the outdoor side.

前記課題を解決するために本発明は、屋根下地上に設けられた凹凸屋根材と、この凹凸屋根材の軒側に設けられた面戸とを備え、前記凹凸屋根材が、下方に開口し上方に突出する凸部と、上方に開口し下方に凹む凹部とを軒に沿う方向に交互に有した屋根構造であって、前記面戸は、前記凸部の軒側開口を覆う覆い部と、前記凹部の軒側開口から排出された雨水をさらに屋外側に導く導水部と、前記覆い部の下端部の軒側端部から屋外側に突出する水受部と、前記覆い部で覆われるとともに前記凸部の屋外側に位置する部位に設けた水抜き孔とを有し、前記軒に沿う方向における前記水受部の間に設けられた前記導水部は、前記凹部の底面部の軒側端部から屋外側程屋根勾配よりも急な下り傾斜で、屋外側に凸の弧状に湾曲した形状で、その下端部が軒樋側を向いており、前記水受部はその側端部から垂下して前記導水部に接続する側片部を備えて下方に開口していることを特徴とする。 In order to solve the above problems, the present invention comprises an uneven roof material provided on a roof base and a face door provided on the eaves side of the uneven roof material, and the uneven roof material opens downward. It is a roof structure having convex portions protruding upward and concave portions opening upward and recessed downward in the direction along the eaves, and the face door is a covering portion that covers the eaves side opening of the convex portion. A water guide portion that further guides rainwater discharged from the eaves-side opening of the concave portion to the outdoor side, a water receiving portion that protrudes from the eave-side end portion of the lower end portion of the cover portion to the outdoor side, and the cover portion. And a drainage hole provided in a portion located on the outdoor side of the convex portion, and the water guide portion provided between the water receiving portions in a direction along the eave is an eave at a bottom portion of the concave portion. in sudden descending slope than the roof slope as outdoor side from the side end portion, in a shape curved in an arc shape convex to weather side, the End faces the eaves gutter side, the water receiving portion characterized in that it opens downward comprises a side piece portion connected to the water conduit depending from its side edges.

本発明は、屋根面（凹凸屋根材の上面）に沿って軒側に向けて流れた雨水が、導水部に沿って流れる際に、導水部や凹凸屋根材と導水部との間等に角を有する場合のように前記雨水が前記角から飛び出すことを抑制することができる。これによって、本発明は、前記雨水の屋外側への飛び出しを軽減することができる。 In the present invention, when the rainwater that flows toward the eaves along the roof surface (the upper surface of the uneven roof material) flows along the water guide portion, the corner is placed between the water guide portion or the uneven roof material and the water guide portion. The rainwater can be prevented from jumping out from the corner as in the case of having. Thereby, this invention can reduce the jumping out of the rainwater to the outdoor side.

第一実施形態の面戸と凹凸屋根材の斜視断面図である。It is a perspective sectional view of a face door and an uneven roof material of a first embodiment. 同上の面戸と凹凸屋根材の上方側から視た斜視図である。It is the perspective view seen from the upper side of the same face door and uneven roof material. 同上の面戸と凹凸屋根材の下方側から視た斜視図である。It is the perspective view seen from the downward side of the same face door and uneven roof material. 第一実施形態の屋根構造の軒側を示す側断面図である。It is a sectional side view which shows the eaves side of the roof structure of 1st embodiment. 同上の屋根構造の斜視図である。It is a perspective view of a roof structure same as the above. 第二実施形態の屋根構造の軒側を示す側断面図である。It is a sectional side view which shows the eaves side of the roof structure of 2nd embodiment.

以下、本発明を添付図面に基づいて説明する。 Hereinafter, the present invention will be described with reference to the accompanying drawings.

〈第一実施形態〉
本実施形態の屋根構造は、例えば図５に示すように、片流れ屋根を有する建物１に適用される。以下では、傾斜した屋根面に沿って軒と棟を結ぶ矢印Ｄ１に示す方向（屋根勾配に沿った方向）を、軒棟方向とし、軒に沿う矢印Ｄ２に示す方向を、軒方向として説明する。 <First embodiment>
The roof structure of this embodiment is applied to a building 1 having a single-flow roof, for example, as shown in FIG. In the following, the direction indicated by the arrow D1 connecting the eaves and the ridge along the inclined roof surface (the direction along the roof gradient) is defined as the eave ridge direction, and the direction indicated by the arrow D2 along the eave is described as the eave direction. .

建物１軒側の外壁の上端部には、図４に示すように、軒部１０が形成されており、軒部１０は、屋外側（棟と反対側）に向けて突出する。軒部１０の屋外側端部は、鼻隠し１１（鼻板）で形成されており、鼻隠し１１は略垂直に設けてある。 As shown in FIG. 4, an eave portion 10 is formed at the upper end portion of the outer wall on the side of one building, and the eave portion 10 projects toward the outdoor side (the side opposite to the building). The outdoor side end of the eaves part 10 is formed with a nose cover 11 (nose plate), and the nose cover 11 is provided substantially vertically.

建物１の屋根下地は、例えば野地板１２となっており、野地板１２は、垂木等の構造躯体上に設けられる。野地板１２は、棟側から軒側に向けて一様な角度で下り傾斜しており、屋根勾配（軒棟方向）と平行となっている。野地板１２の軒側端部は、鼻隠し１１よりも屋外側に突出する。 The roof base of the building 1 is, for example, a field board 12, and the field board 12 is provided on a structural frame such as a rafter. The base plate 12 is inclined downward at a uniform angle from the building side to the eaves side, and is parallel to the roof gradient (in the eaves building direction). The eaves side edge part of the field board 12 protrudes to the outdoor side rather than the nose cover 11.

野地板１２上には、図４に示すように、複数の凹凸屋根材３が載置される。各凹凸屋根材３は、軒方向に並べて（隣り合って）配置される。各凹凸屋根材３の軒側端部は、軒棟方向において野地板１２の軒側端部よりも屋外側に突出する。そして、各凹凸屋根材３は、例えば鋼板製となっている。なお、各凹凸屋根材３は、鋼板以外の金属板で形成してもよく、また、その材質は金属に限定されるものではない。 As shown in FIG. 4, a plurality of uneven roof materials 3 are placed on the field board 12. The uneven roof materials 3 are arranged side by side (adjacent) in the eave direction. The eaves side edge part of each uneven roof material 3 protrudes to the outdoor side rather than the eaves side edge part of the field plate 12 in the eaves ridge direction. Each uneven roof material 3 is made of, for example, a steel plate. In addition, each uneven | corrugated roof material 3 may be formed with metal plates other than a steel plate, and the material is not limited to a metal.

各凹凸屋根材３は、図２や図３に示すように、下方に開口し上方に突出する凸部３０と、上方に開口し下方に凹む凹部３１とを有する。凸部３０と凹部３１とは、軒方向に交互に並んで形成される。 As shown in FIG. 2 and FIG. 3, each uneven roof material 3 has a convex portion 30 that opens downward and protrudes upward, and a concave portion 31 that opens upward and dents downward. The convex portions 30 and the concave portions 31 are formed alternately in the eave direction.

各凸部３０の側面部は、隣接する凹部３１の側面部を兼ねており、この側面部は凸部３０の天面部や凹部３１の底面部に対して略直交している。各凸部３０の幅及び各凹部３１の幅は各々、軒棟方向において一様となっている。 The side surface portion of each convex portion 30 also serves as the side surface portion of the adjacent concave portion 31, and this side surface portion is substantially orthogonal to the top surface portion of the convex portion 30 and the bottom surface portion of the concave portion 31. The width of each convex portion 30 and the width of each concave portion 31 are uniform in the eaves-ridge direction.

このため、本実施形態の屋根構造は、その屋根面が複数の凹凸屋根材３で形成されており、凹凸形状の屋根面となっている。言い換えると、凹凸屋根材３は、その上面が屋根面となっている。そして、本実施形態では、図５に示すように、前記屋根面上に機能パネルが設けてあり、この機能パネルは、例えば太陽光発電パネル５となっている。 For this reason, the roof surface of the present embodiment has a roof surface that is formed of a plurality of uneven roof materials 3 and has an uneven roof surface. In other words, the top surface of the uneven roof material 3 is a roof surface. And in this embodiment, as shown in FIG. 5, the functional panel is provided on the said roof surface, and this functional panel is the photovoltaic power generation panel 5, for example.

また、軒方向において隣り合う凹凸屋根材３は、連結具（図示せず）を介して連結される。この連結具は、例えばビスや釘等の固着具を用いた固着によって、野地板１２に固定される。これによって、各凹凸屋根材３は、野地板１２に対して固定される。更に、前記連結具には、カバー部材が取り付けてあり、このカバー部材は、前記隣り合う凹凸屋根材３の間の部分、及びこの部分に設けた前記連結具を覆う。 Moreover, the uneven roof material 3 adjacent in the eave direction is connected via a connector (not shown). This connecting tool is fixed to the base plate 12 by fixing using a fixing tool such as a screw or a nail. Thereby, each uneven roof material 3 is fixed to the base plate 12. Further, a cover member is attached to the connector, and the cover member covers a portion between the adjacent uneven roof materials 3 and the connector provided in this portion.

また、野地板１２の軒側端部には、面戸２が設けてある。面戸２は、軒方向に長尺となっており、例えば鋼板製となっている。なお、面戸２は、鋼板以外の金属板で形成してもよく、また、その材質は金属に限定されるものではない。更に、面戸２は、図１に示すように、板状部２０と、凸部３０と同数（複数）で対応する凸部３０の軒側開口を覆う閉塞部２１と、凹部３１と同数（複数）の導水部２２とを有する。 A face door 2 is provided at the eaves side end of the field board 12. The face door 2 is long in the eave direction, and is made of, for example, a steel plate. In addition, the face door 2 may be formed with metal plates other than a steel plate, and the material is not limited to a metal. Furthermore, as shown in FIG. 1, the face door 2 has the same number of plate-like portions 20, closed portions 21 that cover the eaves-side openings of the convex portions 30 corresponding to the same number (plurality) of convex portions 30, and the same number of concave portions 31 ( And a plurality of water guide portions 22.

板状部２０は、矩形状に形成されており、軒方向に長尺となっている。板状部２０は、その棟側部分に、固定部２００を有する。固定部２００は、野地板１２に載置される。特に図示しないが、固定部２００は、ビスや釘等の固着具を用いた固着、或いは接着剤を用いた接着等によって、野地板１２の軒側端部に固定される。そして、板状部２０上には、図４に示すように、凹凸屋根材３の軒側部分が載置される。言い換えると、各凹凸屋根材３は、その軒側部分が、固定部２００を介して、野地板１２に載置される。 The plate-like portion 20 is formed in a rectangular shape and is long in the eave direction. The plate-like part 20 has a fixing part 200 at its ridge side part. The fixing unit 200 is placed on the field board 12. Although not shown in particular, the fixing portion 200 is fixed to the eaves side end portion of the field board 12 by fixing using a fixing tool such as a screw or a nail or bonding using an adhesive. And the eaves side part of the uneven roof material 3 is mounted on the plate-shaped part 20 as shown in FIG. In other words, the eaves-side portion of each uneven roof material 3 is placed on the base plate 12 via the fixing portion 200.

更に、板状部２０の軒側部分は、固定部２００（凹凸屋根材３の軒側端部）より屋外側に突出して位置する。そして、図３に示すように、板状部２０は、その軒側部分のうち、各凸部３０の屋外側に位置する部位に夫々、水抜き孔２０１を有する。各水抜き孔２０１は、対応する凸部３０毎に設けてあり、板状部２０の板面に貫通して形成される。このため、各凸部３０の内部空間等を流れる雨水は、対応する水抜き孔２０１から下方に流れ落ちる。 Furthermore, the eaves side part of the plate-like part 20 is located so as to protrude to the outdoor side from the fixed part 200 (eave side end of the uneven roof material 3). And as shown in FIG. 3, the plate-shaped part 20 has the drain hole 201 in the site | part located in the outdoor side of each convex part 30 among the eaves side parts, respectively. Each drain hole 201 is provided for each corresponding projection 30 and is formed so as to penetrate the plate surface of the plate-like portion 20. For this reason, rainwater flowing through the internal space of each convex portion 30 flows down from the corresponding drain hole 201.

また、図２に示すように、板状部２０の軒側部分は、その屋外側端部に、複数の閉塞部２１と複数の導水部２２とが形成されており、閉塞部２１の水受部２１４（詳細は後述する）と導水部２２とは、軒方向において交互に並ぶ。 In addition, as shown in FIG. 2, the eaves side portion of the plate-like portion 20 is formed with a plurality of closed portions 21 and a plurality of water guide portions 22 at the outdoor side end portion. The portions 214 (details will be described later) and the water guide portions 22 are alternately arranged in the eaves direction.

各閉塞部２１は、図１に示すように、板状部２０に立設される。各閉塞部２１は、覆い部２１０と、押さえ部２１３と、水受部２１４とを有する。覆い部２１０は、屋外側の面（軒棟方向側の面）となる前面部２１１と、両側の面（軒方向側の面）となる側面部２１２とを有する。 As shown in FIG. 1, each blocking portion 21 is erected on the plate-like portion 20. Each closing part 21 includes a cover part 210, a pressing part 213, and a water receiving part 214. The cover part 210 has a front surface part 211 that becomes a surface on the outdoor side (surface on the eave building direction side) and a side surface part 212 that becomes a surface on both sides (surface on the eaves direction side).

前面部２１１は、板状に形成されており、板状部２０の軒側端部から立ち上がる。そして、前面部２１１は、上方程棟側に位置するように傾斜しており、板状部２０との成す角度が、例えば鋭角となっている。このため、前面部２１１は、面戸２を施工したときに屋根勾配よりも急な傾斜で屋外側に向けて下り傾斜する。 The front surface portion 211 is formed in a plate shape and rises from the eaves side end of the plate portion 20. And the front part 211 inclines so that it may be located in the ridge side toward the upper part, and the angle which the plate-shaped part 20 comprises becomes an acute angle, for example. For this reason, the front part 211 inclines downward toward the outdoor side with a steep slope than the roof slope when the face door 2 is constructed.

両側面部２１２は、板状部２０から立ち上げて設けてあり、板状部２０に対して直交する向きで上方に突出する。そして、両側面部２１２は、前面部２１１の側端部と板状部２０の間を閉塞する。このため、覆い部２１０は、棟側に開口した箱形状となっている。 Both side surface portions 212 are provided so as to rise from the plate-like portion 20 and protrude upward in a direction orthogonal to the plate-like portion 20. The both side surface portions 212 close the space between the side end portion of the front surface portion 211 and the plate-like portion 20. For this reason, the cover part 210 becomes the box shape opened to the ridge side.

そして、軒棟方向において、各覆い部２１０の棟側開口には、対応する凸部３０の軒側開口を対向させて配置される。これによって、各覆い部２１０は、対応する凸部３０の軒側開口を覆う。更に、前面部２１１の上端部は、対応する凸部３０の天面部の軒側端部よりも上方に突出する。このため、各凸部３０の天面部上を軒側に向けて流れる雨水は、前記天面部の軒側端部に至ると、例えば図１中の矢印ａｒ２や矢印ａｒ３で示すように、対応する前面部２１１の上端部によって、その流れる向きが変更されたり、堰き止められたりする。 And in the eaves building direction, the eaves side opening of the corresponding convex part 30 is arrange | positioned facing the building side opening of each cover part 210. FIG. Thereby, each cover part 210 covers the eaves side opening of the corresponding convex part 30. Furthermore, the upper end portion of the front surface portion 211 protrudes upward from the eaves side end portion of the top surface portion of the corresponding convex portion 30. For this reason, the rainwater flowing toward the eave side on the top surface portion of each convex portion 30 corresponds to the eave side end portion of the top surface portion, for example, as shown by arrows ar2 and ar3 in FIG. The flow direction is changed or dammed up by the upper end portion of the front surface portion 211.

押さえ部２１３は、前面部２１１の上端部に接続されており、この上端部から棟側に向けて突出する。そして、押さえ部２１３は、片状に形成されており、その片の板面が、板状部２０の板面と略平行となっている。 The holding part 213 is connected to the upper end part of the front part 211, and protrudes toward the ridge side from this upper end part. The pressing portion 213 is formed in a piece shape, and the plate surface of the piece is substantially parallel to the plate surface of the plate-like portion 20.

水受部２１４は、図１に示すように、板状部２０の屋外側端部に接続されており、この屋外側端部から屋外側に向けて突出する。そして、水受部２１４は、板状部２０から延出した片部となっており、板状部２０の前記屋外側端部（前面部２１１の立ち上がり部位）から棟と反対側（屋外側）に向けて突出する。また、水受部２１４は、軒方向に長尺な矩形板状に形成されており、水受部２１４の軒方向における寸法は、覆い部２１０の軒方向における寸法と略同寸になっている。 As shown in FIG. 1, the water receiving portion 214 is connected to the outdoor side end portion of the plate-like portion 20, and protrudes from the outdoor side end portion toward the outdoor side. The water receiving portion 214 is a piece extending from the plate-like portion 20, and is opposite to the ridge (outdoor side) from the outdoor-side end portion of the plate-like portion 20 (the rising portion of the front surface portion 211). Protrusively toward. Moreover, the water receiving part 214 is formed in a rectangular plate shape elongated in the eave direction, and the dimension in the eave direction of the water receiving part 214 is substantially the same as the dimension in the eave direction of the cover part 210. .

各導水部２２は、棟側に凹んだ溝状に形成されており、軒方向において水受部２１４の間に夫々設けてある。そして、各導水部２２は、溝底が屋外側程下向きに傾斜しており、上方及び屋外側に開口した形状となっている。言い換えると、各導水部２２は、溝底を形成する奥片部２２１と、溝の両側を形成する各側片部２２２とを有する。 Each water guide portion 22 is formed in a groove shape recessed toward the ridge side, and is provided between the water receiving portions 214 in the eave direction. And each water guide part 22 has the shape where the groove bottom inclines downward toward the outdoor side, and opens upward and the outdoor side. In other words, each water conveyance part 22 has the back piece part 221 which forms a groove bottom, and each side piece part 222 which forms the both sides of a groove | channel.

奥片部２２１は、板状部２０の屋外側端部に接続されており、この屋外側端部から屋外側に向けて突出する。そして、奥片部２２１は、軒方向において、その両側に位置する水受部２１４の間に亘って設けてある。 The back piece 221 is connected to the outdoor side end of the plate-like portion 20 and protrudes from the outdoor side end toward the outdoor side. And the back piece part 221 is provided over the water receiving part 214 located in the both sides in the eaves direction.

また、奥片部２２１は、屋外側程屋根勾配よりも急な下り傾斜となるように、弧状に湾曲している。言い換えると、奥片部２２１は、下向きに傾斜して板状部２０から屋外側に突出して形成されており、その傾斜が、屋外側に凸の弧状に湾曲している。そして、奥片部２２１は、その屋外側の端部（下端部）が、下方を向いている。このため、各凹部３１の底面部上を棟側から軒側に向けて流れる雨水は、この底面部の軒側端部（軒側開口の下端縁）から対応する導水部２２に流れ、この後、導水部２２の前記下端部から流れ落ちる（下方側に排出される）。 Further, the back piece 221 is curved in an arc shape so as to have a downward slope steeper than the roof slope on the outdoor side. In other words, the back piece 221 is formed so as to incline downward and protrude from the plate-like part 20 to the outdoor side, and the inclination is curved in a convex arc shape on the outdoor side. And as for the back piece part 221, the edge part (lower end part) of the outdoor side has faced the downward direction. For this reason, rainwater that flows from the ridge side toward the eave side on the bottom surface of each recess 31 flows from the eave side end portion (the lower end edge of the eave side opening) of the bottom surface portion to the corresponding water guide portion 22, and thereafter Then, it flows down from the lower end portion of the water guide portion 22 (is discharged downward).

各側片部２２２は、対応する水受部２１４の側端部から垂下して形成される。そして、各側片部２２２は、その下端が、奥片部２２１に接続される。言い換えると、各側片部２２２は、対応する水受部２１４の側端部と、この側端部の下方に位置する奥片部２２１の対応する側端部との間に亘って設けてある。 Each side piece portion 222 is formed to hang down from the side end portion of the corresponding water receiving portion 214. Each side piece 222 has a lower end connected to the back piece 221. In other words, each side piece 222 is provided between the side end portion of the corresponding water receiving portion 214 and the corresponding side end portion of the back piece portion 221 located below the side end portion. .

また、図４に示すように、押さえ部２１３と板状部２０との間には、各凸部３０の軒側端部が位置する。このため、固定部２００は、野地板１２と凹部３１の底面部との間に挟まれて固定される。 Further, as shown in FIG. 4, the eaves side end of each convex portion 30 is located between the pressing portion 213 and the plate-like portion 20. For this reason, the fixing | fixed part 200 is pinched | interposed between the base plate 12 and the bottom face part of the recessed part 31, and is fixed.

この状態において、押さえ部２１３は、対応する凸部３０の天面部の軒側端部に載置される。このため、凹凸屋根材３は、風等を要因として野地板１２から浮き上がろうとしたとき、押さえ部２１３によって押さえられる。 In this state, the pressing portion 213 is placed on the eaves side end portion of the top surface portion of the corresponding convex portion 30. For this reason, the uneven roofing material 3 is pressed by the pressing portion 213 when trying to float up from the field plate 12 due to wind or the like.

そして、この状態において、各閉塞部２１は、対応する凸部３０の屋外側に配置されて、凸部３０の軒側開口を覆う。これによって、各凸部３０は、その内部（凸部３０の内部空間）への雨水や小鳥、虫等の侵入が抑制される。 And in this state, each obstruction | occlusion part 21 is arrange | positioned at the outdoor side of the corresponding convex part 30, and covers the eaves-side opening of the convex part 30. FIG. Thereby, the intrusion of rainwater, small birds, insects, etc. into the inside of each convex portion 30 (internal space of the convex portion 30) is suppressed.

また、軒部１０の屋外側には、軒樋４が設けてあり、軒樋４は軒部１０に沿って長尺に配置される。軒樋４は、取付具４２を介して、鼻隠し１１に取り付けてある。軒樋４は、長手方向に直交する向き（建物１外壁に直交する屋内外方向）で切断した断面形状が、上方に開口する矩形Ｕ字状となっている。そして、面戸２の各水受部２１４の屋外側端部、及び各導水部２２の下端部（奥片部２２１の下端部）は、屋内外方向において、軒樋４の両側の壁部４１の間（Ｕ字の内側空間の上方）に位置する。このため、各水受部２１４の屋外側端部や各導水部２２の下端部から流れ落ちた雨水は、軒樋４で受けられるようになっている。 Further, an eave ridge 4 is provided on the outdoor side of the eave portion 10, and the eave ridge 4 is arranged along the eave portion 10 in a long shape. The eaves 4 is attached to the nose cover 11 via the attachment 42. The eaves 4 has a rectangular U-shaped cross-section cut in a direction orthogonal to the longitudinal direction (indoor / outdoor direction orthogonal to the outer wall of the building 1). And the outdoor side edge part of each water receiving part 214 of the face door 2, and the lower end part (lower end part of the back piece part 221) of each water guide part 22 are the wall parts 41 on both sides of the eaves wall 4 in the indoor / outdoor direction. (Located above the U-shaped inner space). For this reason, the rainwater that has flowed down from the outdoor side end portion of each water receiving portion 214 and the lower end portion of each water guide portion 22 is received by the eaves 4.

ところで、本実施形態のような凹凸形状の屋根構造において、その屋根面に降った雨水は、各凸部３０の天面部上を流れる雨水の一部（例えば図１中の矢印ａｒ２参照）が、凹部３１側に流れ込む。このため、各凹部３１の底面部の軒側端部に流れる雨水（各凹部３１の軒側から排出される雨水）の流量が、各凸部３０の天面部の軒側端部に流れる雨水（各凸部３０の軒側から排出される雨水）の流量に比べて、多くなり易い。 By the way, in the uneven-shaped roof structure as in this embodiment, the rainwater that has fallen on the roof surface is part of the rainwater that flows on the top surface portion of each convex portion 30 (see, for example, the arrow ar2 in FIG. 1). It flows into the recess 31 side. For this reason, the flow rate of rainwater (rainwater discharged from the eaves side of each recess 31) flowing to the eaves side end portion of the bottom surface of each recess 31 is reduced to the rainwater ( It tends to increase compared to the flow rate of rainwater discharged from the eaves side of each convex portion 30.

そして、本実施形態では、各導水部２２が、図１や図４に示すように、対応する凹部３１の軒側端部の下側に配置される。奥片部２２１は、その上端部が板状部２０に連続する。このため、各凹部３１の軒側から排出される雨水は、対応する導水部２２（奥片部２２１）に流れ込み易くなっている。そして、この雨水は、湾曲した奥片部２２１や両側片部２２２に沿って屋外側に導かれ、奥片部２２１の屋外側の端部（下端部）から軒樋４側に流れ落ちる（排出される）。 And in this embodiment, each water conveyance part 22 is arrange | positioned under the eaves side edge part of the corresponding recessed part 31, as shown in FIG.1 and FIG.4. The back piece 221 has an upper end continuous with the plate-like portion 20. For this reason, the rainwater discharged from the eaves side of each recess 31 is easy to flow into the corresponding water guide portion 22 (back piece portion 221). Then, this rainwater is guided to the outdoor side along the curved back piece 221 and both side pieces 222, and flows down from the outdoor side end (lower end) of the back piece 221 to the eaves 4 side (discharged). )

更に、各導水部２２は、屋外側程屋根勾配よりも急な下り傾斜で、屋外側に凸の弧状に湾曲した形状となっている。このため、例えば図１に示すように、各凹部３１を流れる雨水（図中の矢印ａｒ１参照）は、対応する導水部２２に流れ込むことで、その流れる向きを、軒棟方向（屋根勾配）に沿った向きから、緩やかに下向きに変更される。言い換えると、各凹部３１の軒側から排出される雨水は、例えば図１中の矢印ａｒ５で示すように、対応する導水部２２（奥片部２２１）に沿って流れることで、緩やかに方向を変えながら導水部２２（奥片部２２１）の下端部から排出される。 Furthermore, each water guide section 22 has a shape that is curved downward in a convex arc shape on the outdoor side with a downward slope steeper than the roof slope on the outdoor side. For this reason, for example, as shown in FIG. 1, rainwater flowing through each recess 31 (see arrow ar <b> 1 in the figure) flows into the corresponding water guide section 22, thereby changing the flowing direction to the eaves-ridge direction (roof slope). The direction is changed gradually from the direction along the line. In other words, rainwater discharged from the eaves side of each concave portion 31 flows along the corresponding water guide portion 22 (back piece portion 221), for example, as shown by an arrow ar5 in FIG. The water is discharged from the lower end portion of the water guide portion 22 (the back piece portion 221) while changing.

このため、前記雨水は、各導水部２２に沿って流れる際に、導水部２２や凹凸屋根材３と導水部２２との間等に角を有する場合に生じるような前記角からの飛び出しを抑制することができる。すなわち、本実施形態では、奥片部２２１に前記角の無い導水部２２を備えたことで、屋根面の軒側から排出される雨水の多数を占め易い凹部３１から排出される雨水に対して、凹凸屋根材３や面戸２等からの屋外側への大きな飛び出しを抑制することができる。これによって、本実施形態では、雨水の屋根面から屋外側への飛び出しを軽減することができる。更に、奥片部２２１の下端部が軒樋４側を向くため、各導水部２２は、屋外側から排出する雨水を軒樋４に導入し易くなっている。 For this reason, when the rainwater flows along each water guide portion 22, it suppresses jumping out from the corners that occurs when there is a corner between the water guide portion 22 or the uneven roof material 3 and the water guide portion 22. can do. That is, in this embodiment, the rear piece 221 includes the water guide portion 22 without the corners, so that rainwater discharged from the recessed portion 31 that easily occupies a large number of rainwater discharged from the eaves side of the roof surface. Moreover, the big protrusion to the outdoor side from the uneven roof material 3, the face door 2, etc. can be suppressed. Thereby, in this embodiment, jumping out from the roof surface of rainwater to the outdoor side can be reduced. Furthermore, since the lower end part of the back piece 221 faces the eaves ridge 4 side, each water guide section 22 is easy to introduce rainwater discharged from the outdoor side into the eave ridge 4.

そして、各凸部３０の天面部の軒側から排出される雨水の一部は、例えば図１中の矢印ａｒ２で示すように、隣接する凹部３１に流れ込み、対応する導水部２２に沿って流れて、屋外側に排出される。また、各凸部３０の天面部の軒側から排出される雨水の一部は、この天面部の軒側端部と押さえ部２１３との間から、各凸部３０の内部空間に連通した覆い部２１０の内部空間（覆い部２１０の箱内）に流れ込む。この流れ込んだ雨水は、例えば図３中の矢印ａｒ４で示すように、対応する水抜き孔２０１から流れ落ちる（下方側に排出される）。 A part of the rainwater discharged from the eaves side of the top surface portion of each convex portion 30 flows into the adjacent concave portion 31 and flows along the corresponding water guide portion 22 as indicated by an arrow ar2 in FIG. And discharged to the outdoor side. Further, a part of the rainwater discharged from the eave side of the top surface portion of each convex portion 30 is covered between the eave side end portion of the top surface portion and the holding portion 213 and communicates with the internal space of each convex portion 30. It flows into the internal space of the part 210 (inside the box of the cover part 210). For example, as shown by an arrow ar4 in FIG. 3, the rainwater that has flowed in flows down from the corresponding drain hole 201 (is discharged downward).

また、前記雨水が押さえ部２１３を乗り越えた場合（例えば図１中の矢印ａｒ３参照）、この雨水は、対応する覆い部２１０の屋外側の面を伝って水受部２１４の上面に至り、水受部２１４の屋外側端部から屋外側に流れ落ちる（排出される）。このため、本実施形態では、押さえ部２１３を乗り越えた雨水が屋外側に大きく飛び出すことを抑制することができて、雨水の屋外側への飛び出しを軽減し易くすることができる。 Further, when the rainwater gets over the holding portion 213 (see, for example, the arrow ar3 in FIG. 1), the rainwater reaches the upper surface of the water receiving portion 214 along the surface of the corresponding cover portion 210 on the outdoor side, It flows down (is discharged) from the outdoor side end of the receiving part 214 to the outdoor side. For this reason, in this embodiment, it can suppress that the rainwater which got over the holding | suppressing part 213 jumps largely to the outdoor side, and can make it easy to reduce the jumping of rainwater to the outdoor side.

更に、本実施形態では、前面部２１１の上端部を凸部３０の軒側端部より上方に突出させたことで、雨水が各凸部３０の天面部上を軒側に流れる際に、その雨水を凹部３１側や覆い部２１０内側に導き易くすることができる。このため、本実施形態では、押さえ部２１３を乗り越えて排出される雨水を生じ難くすることができて、雨水の屋外側への飛び出しを軽減し易くすることができる。 Furthermore, in this embodiment, when the upper end portion of the front surface portion 211 protrudes upward from the eaves side end portion of the convex portion 30, when rainwater flows on the top surface portion of each convex portion 30 toward the eave side, Rainwater can be easily guided to the concave portion 31 side and the cover portion 210 inside. For this reason, in this embodiment, it is possible to make it difficult to generate rainwater that is discharged over the pressing portion 213, and it is possible to easily reduce the jumping of rainwater to the outdoor side.

〈第二実施形態〉
次に第二実施形態について説明する。なお、第二実施形態の説明では、第一実施形態と同一の構成については同一の符号を付与して、重複する説明は省略する。 <Second embodiment>
Next, a second embodiment will be described. In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and duplicate descriptions are omitted.

本実施形態では、図６に示すように、各覆い部２１０において、前面部２１１が、板状部２０に対して直交して立ち上がる。 In the present embodiment, as shown in FIG. 6, in each cover portion 210, the front surface portion 211 rises orthogonal to the plate-like portion 20.

そして、各導水部２２は、板状部２０の軒側端部の軒方向における全長に亘って形成される。言い換えると、各水受部２１４は、各導水部２２と同じ形状に形成される。このため、各水受部２１４は、屋外側程屋根勾配よりも急な下り傾斜で、屋外側に凸の弧状に湾曲した形状となっており、その下端部が軒樋４側を向く。 And each water guide part 22 is formed over the full length in the eaves direction of the eaves side edge part of the plate-shaped part 20. As shown in FIG. In other words, each water receiving part 214 is formed in the same shape as each water guiding part 22. For this reason, each water receiving part 214 has a shape that is curved downward in a convex arc shape on the outdoor side with a downward slope steeper than the roof gradient on the outdoor side, and its lower end part faces the eaves 4 side.

これによって、本実施形態では、前記雨水が各導水部２２に沿って流れる際に、凹部３１から排出される雨水の前記角からの飛び出しを抑制することができて、雨水の屋根面から屋外側への飛び出しを軽減することができる。 Thereby, in this embodiment, when the rainwater flows along each water guide portion 22, the rainwater discharged from the recess 31 can be prevented from jumping out from the corner, and the rainwater roof surface can be outdoors. Jumping out of can be reduced.

そして、本実施形態では、前面部２１１を板状部２０に直交して設けたことで、板状部２０の軒側端部を凹凸屋根材３の軒側端部に近接して配置することができる。言い換えると、本実施形態では、板状部２０の屋外側への突出量を抑えることができる。 And in this embodiment, the eaves side edge part of the plate-shaped part 20 is arrange | positioned adjacent to the eaves side edge part of the uneven roof material 3 by providing the front surface part 211 orthogonally to the plate-shaped part 20. Can do. In other words, in this embodiment, the protrusion amount of the plate-like portion 20 to the outdoor side can be suppressed.

このため、本実施形態では、雨水が飛び出す位置を屋内側に近づけることができて、飛び出した際の雨水の屋根面（軒部１０）からの被散距離を抑えることができる。これによって、本実施形態では、雨水の屋根面からの飛び出しを軽減し易くすることができる。 For this reason, in this embodiment, the position where rainwater jumps out can be brought closer to the indoor side, and the scattering distance from the roof surface (eave part 10) of rainwater when it jumps out can be suppressed. Thereby, in this embodiment, it can be made easy to reduce jumping out from the roof surface of rainwater.

なお、本発明は、片流れ屋根だけではなく、切妻屋根等のその他の形状の屋根にも適用可能である。また、本発明は、前面部２１１を傾斜して設けた場合において、水受部２１４を屋外側に凸の弧状に湾曲した形状とする等で、導水部２２を板状部２０の軒方向における全長に亘って形成してもよい。また、本発明は、前面部２１１を板状部２０から直交して立ち上げて設けた場合において、水受部２１４を板状部２０と平行に突出して形成してもよい。また、本発明は、前述の各実施形態にのみ限定されるものではなく、要旨を逸脱しない範囲内で適宜変更して実施し得るものである。 The present invention is applicable not only to a single-flow roof but also to roofs of other shapes such as a gable roof. Further, in the present invention, in the case where the front portion 211 is provided to be inclined, the water receiving portion 214 is formed in a shape curved in a convex arc shape on the outdoor side. It may be formed over the entire length. Further, in the present invention, when the front surface portion 211 is provided so as to stand up perpendicularly from the plate-like portion 20, the water receiving portion 214 may be formed so as to protrude in parallel with the plate-like portion 20. Further, the present invention is not limited to the above-described embodiments, and can be implemented with appropriate modifications within a range not departing from the gist.

２面戸
２１閉塞部
２１０覆い部
２１４水受部
２２導水部
２２１奥片部
３凹凸屋根材
３０凸部
３１凹部 2 Surface door 21 Closure part 210 Cover part 214 Water receiving part 22 Water conveyance part 221 Back piece part 3 Convex roof material 30 Convex part 31 Concave part

Claims

Provided with an uneven roof material provided on the roof base and a face door provided on the eaves side of the uneven roof material, the uneven roof material opening downward and projecting upward, and opening upward And it is a roof structure having alternately recessed portions recessed downward in the direction along the eaves,
The face door includes a cover portion that covers the eaves-side opening of the convex portion, a water guide portion that further guides rainwater discharged from the eave-side opening of the concave portion to the outdoor side, and an eave-side end portion of the lower end portion of the cover portion A water receiving portion that protrudes to the outdoor side, and a drain hole that is covered with the cover portion and provided in a portion located on the outdoor side of the convex portion ,
The water guide portion provided between the water receiving portions in the direction along the eaves has a downward slope steeper from the eaves side end of the bottom surface of the recess toward the outdoor side, and is convex to the outdoor side. In the shape curved in an arc , its lower end faces the eaves side ,
The said water receiving part is provided with the side piece part which hangs down from the side edge part, and connects to the said water conveyance part, and is opened below, The roof structure characterized by the above-mentioned .