JP7045956B2 - Ventilation spacers, attic structures and ventilator boards - Google Patents

Ventilation spacers, attic structures and ventilator boards Download PDF

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JP7045956B2
JP7045956B2 JP2018141628A JP2018141628A JP7045956B2 JP 7045956 B2 JP7045956 B2 JP 7045956B2 JP 2018141628 A JP2018141628 A JP 2018141628A JP 2018141628 A JP2018141628 A JP 2018141628A JP 7045956 B2 JP7045956 B2 JP 7045956B2
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air passage
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JP2020016126A (en
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敦実 星野
芳真 田中
俊也 田中
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Fukuvi Chemical Industry Co Ltd
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Description

本発明は、通気路形成用スペーサ、屋根裏構造および通気路形成用板材に関する。 The present invention relates to a spacer for forming an air passage, an attic structure, and a plate material for forming an air passage.

一般に、家屋の屋根は、平行に設置された複数本の垂木の上に野地板が取り付けられて形成されている。このような屋根の屋根裏側に通気路を形成するために、垂木間に通気路形成用スペーサを設置することが行われている（例えば、特許文献１参照）。また、このように垂木間に設置された通気路形成用スペーサの室内側に断熱材を設置することも行われている（例えば、特許文献２，３参照）。また、垂木間に設置された通気路形成用スペーサの室内側に発泡する断熱材を吹き付けて断熱層を形成することも行われている（例えば、特許文献４参照）。 Generally, the roof of a house is formed by attaching a field board on a plurality of rafters installed in parallel. In order to form a ventilation path on the attic side of such a roof, a spacer for forming a ventilation path is installed between the rafters (see, for example, Patent Document 1). Further, a heat insulating material is also installed on the indoor side of the air passage forming spacer installed between the rafters (see, for example, Patent Documents 2 and 3). Further, a heat insulating material foamed is sprayed on the indoor side of the spacer for forming a ventilation path installed between the rafters to form a heat insulating layer (see, for example, Patent Document 4).

特開２０１２－４１７４１号公報Japanese Unexamined Patent Publication No. 2012-41741 特許第３４００７６６号公報Japanese Patent No. 3400766 特許第５０５８２４１号公報Japanese Patent No. 5058241 特許第５４７７９９０号公報Japanese Patent No. 5477990

ところで、通気路形成用スペーサは、垂木の延在方向に複数連設されて垂木に取り付けられることになるが、その際の施工性の向上が求められている。 By the way, a plurality of spacers for forming an air passage are connected to the rafters in a row in the extending direction of the rafters, and improvement in workability at that time is required.

したがって、本発明は、施工性を向上させることが可能な通気路形成用スペーサ、屋根裏構造および通気路形成用板材の提供を目的とする。 Therefore, an object of the present invention is to provide a spacer for forming an air passage, an attic structure, and a plate material for forming an air passage, which can improve workability.

上記目的を達成するために、本発明の通気路形成用スペーサは、同方向に延在する一対の垂木間に設けられて屋根裏側に通気路を形成する通気路形成用スペーサであって、同方向に延在する一対の第１端縁部および前記一対の第１端縁部に交差する一対の第２端縁部を有する本体部と、前記一対の第１端縁部から立ち上がる一対の起立部と、前記第１端縁部の延在方向における前記一対の起立部の両端部から、前記第２端縁部の延在方向における前記本体部とは反対側に折り曲げられて該本体部よりも前記起立部とは反対方向に突出する折曲突出部と、を有することを特徴とする。 In order to achieve the above object, the spacer for forming an air passage of the present invention is a spacer for forming an air passage provided between a pair of rafters extending in the same direction and forming an air passage on the attic side. A main body having a pair of first end edges extending in a direction and a pair of second end edges intersecting the pair of first end edges, and a pair of standing uprights rising from the pair of first end edges. The portion and both ends of the pair of upright portions in the extending direction of the first end edge portion are bent to the opposite side of the main body portion in the extending direction of the second end edge portion from the main body portion. Also characterized by having a bent protrusion that protrudes in the direction opposite to the upright portion.

このように、本体部の一対の第１端縁部から立ち上がる一対の起立部の、第１端縁部の延在方向における両端部から、本体部とは反対側に折り曲げられて本体部よりも起立部とは反対方向に突出する折曲突出部を有する。作業者は、一対の起立部を一対の垂木に沿って配置し、折曲突出部を本体部よりも室内側に突出させた状態で、折曲突出部において通気路形成用スペーサを垂木に取り付けることになる。その際に、通気路形成用スペーサは、垂木の延在方向において折曲突出部が通気路形成用スペーサの端部近傍に配置されることになる。よって、通気路形成用スペーサを垂木の延在方向に複数連設する際に、既設のものの折曲突出部の近傍に次設のものの折曲突出部が位置することになり、既設のものに対する位置を合わせての次設のものの垂木への取り付けが容易となる。よって、通気路形成用スペーサを垂木の延在方向に複数連設して垂木に取り付ける際の施工性を向上させることが可能となる。 In this way, the pair of erecting portions rising from the pair of first end edge portions of the main body portion are bent from both ends in the extending direction of the first end edge portion to the opposite side to the main body portion and more than the main body portion. It has a bent protrusion that protrudes in the direction opposite to the upright portion. The operator arranges a pair of upright portions along the pair of rafters, and attaches a spacer for forming a ventilation path to the rafters at the bent protrusions with the bent protrusions protruding toward the room from the main body. It will be. At that time, in the air passage forming spacer, the bent protrusion is arranged in the vicinity of the end portion of the air passage forming spacer in the extending direction of the rafters. Therefore, when a plurality of spacers for forming a ventilation path are connected in a row in the extending direction of the rafters, the bent protrusion of the next one is located near the bent protrusion of the existing one, and the bent protrusion of the next one is located with respect to the existing one. It will be easier to attach the next one to the rafters by aligning the position. Therefore, it is possible to improve the workability when a plurality of spacers for forming a ventilation path are continuously provided in the extending direction of the rafters and attached to the rafters.

また、本体部から立ち上がる一対の起立部の両端部から本体部とは反対側に折り曲げられて本体部よりも起立部とは反対方向に突出する折曲突出部を有するため、一枚の板材を折り曲げて容易に製造することができる。また、本体部から立ち上がる一対の起立部の両端部から本体部とは反対側に折り曲げられて本体部よりも起立部とは反対方向に突出する折曲突出部を有するため、垂木に取り付けられる折曲突出部を形成しても、本体部の範囲内に切欠きや穴、スリット等、本体部を板厚方向に貫通する部分を形成する必要がなく、室内側から断熱材を吹き付けても断熱材が通気路側に入り込むことを抑制することができる。 In addition, since it has a bent protrusion that is bent from both ends of a pair of upright portions that rise from the main body to the opposite side of the main body and protrudes from the main body in the direction opposite to the upright portion, a single plate material can be used. It can be easily manufactured by bending. In addition, since it has a bent protrusion that is bent from both ends of a pair of standing portions that rise from the main body to the opposite side of the main body and protrudes from the main body in the direction opposite to the standing portion, it can be attached to a rafter. Even if a curved protrusion is formed, it is not necessary to form a notch, a hole, a slit, or other part that penetrates the main body in the plate thickness direction within the range of the main body, and heat insulation is provided even if a heat insulating material is sprayed from the indoor side. It is possible to prevent the material from entering the ventilation path side.

この場合、前記折曲突出部は、折り曲げ前は前記起立部から前記第１端縁部に沿って延出しており、前記起立部の基端縁部に対し鋭角をなす折り線で折り曲げられていても良い。 In this case, the bent protrusion extends from the upright portion along the first end edge portion before bending, and is bent at an acute angle with respect to the base end edge portion of the upright portion. May be.

このように、折り曲げ前は起立部から第１端縁部に沿って延出している折曲突出部を、起立部の基端縁部に対し鋭角をなす折り線で折り曲げて、本体部よりも起立部とは反対方向に突出させるため、折曲突出部の形成が容易となる。 In this way, before bending, the bent protrusion extending from the upright portion along the first end edge portion is bent along a folding line forming an acute angle with respect to the base end edge portion of the upright portion, and is more than the main body portion. Since it projects in the direction opposite to the upright portion, it becomes easy to form a bent protrusion.

この場合、前記本体部は、前記折曲突出部よりも前記第１端縁部の延在方向外側に突出する本体突出部を有していても良い。 In this case, the main body portion may have a main body protruding portion that protrudes outward in the extending direction of the first end edge portion from the bent protruding portion.

このように、本体部が折曲突出部よりも第１端縁部の延在方向外側に突出する本体突出部を有することで、通気路形成用スペーサを垂木の延在方向に複数連設する際に、隣り合うもの同士の本体部を重ね合わせることができる。よって、通気路の室内側への連通を抑制することができる。 In this way, by having the main body protruding portion protruding outward in the extending direction of the first end edge portion from the bent protruding portion, a plurality of air passage forming spacers are continuously provided in the extending direction of the rafters. At that time, the main bodies of adjacent objects can be overlapped with each other. Therefore, it is possible to suppress communication of the ventilation path to the indoor side.

本発明の屋根裏構造は、上記した通気路形成用スペーサが、前記一対の起立部を前記一対の垂木に沿って配置し、前記折曲突出部を前記本体部よりも室内側に突出させて、前記折曲突出部において前記垂木に取り付けられていることを特徴とする。 In the attic structure of the present invention, the above-mentioned spacer for forming a ventilation path has the pair of upright portions arranged along the pair of rafters, and the bent protrusions are projected toward the room side from the main body portion. It is characterized in that it is attached to the rafter at the bent protrusion.

このように、通気路形成用スペーサが、一対の起立部を一対の垂木に沿って配置し、折曲突出部を本体部よりも室内側に突出させて、折曲突出部において垂木に取り付けられているため、通気路形成用スペーサを垂木の延在方向に複数連設して垂木に取り付ける際の施工性を向上させることが可能となる。 In this way, the air passage forming spacer is attached to the rafters at the bent protrusions by arranging a pair of upright portions along the pair of rafters and projecting the bent protrusions toward the room side from the main body. Therefore, it is possible to improve the workability when a plurality of air passage forming spacers are continuously provided in the extending direction of the rafters and attached to the rafters.

本発明の屋根裏構造は、上記した通気路形成用スペーサが、前記一対の起立部を前記一対の垂木に沿って配置し、前記折曲突出部を前記本体部よりも室内側に突出させて、前記折曲突出部において前記垂木に取り付けられるとともに、前記本体部同士を重ね合わせて前記垂木の延在方向に複数連設されていることを特徴とする。 In the attic structure of the present invention, the above-mentioned spacer for forming a ventilation path has the pair of upright portions arranged along the pair of rafters, and the bent protrusions are projected toward the room side from the main body portion. It is characterized in that it is attached to the rafters at the bent protrusions, and a plurality of the main body portions are overlapped with each other in the extending direction of the rafters.

このように、通気路形成用スペーサが、一対の起立部を一対の垂木に沿って配置し、折曲突出部を本体部よりも室内側に突出させて、折曲突出部において垂木に取り付けられ、しかも、本体部同士を重ね合わせて垂木の延在方向に複数連設されているため、通気路の室内側への連通を抑制することができる。 In this way, the spacer for forming the air passage is attached to the rafters at the bent protrusions by arranging the pair of upright portions along the pair of rafters and projecting the bent protrusions toward the room side from the main body. Moreover, since the main bodies are overlapped with each other and a plurality of rafters are connected in the extending direction, it is possible to suppress the communication of the ventilation passage to the indoor side.

この場合、前記本体部の室内側に断熱材が吹き付けられていても良い。 In this case, the heat insulating material may be sprayed on the indoor side of the main body.

このように、本体部の室内側に断熱材が吹き付けられる際に、通気路形成用スペーサが、本体部から立ち上がる一対の起立部の両端部から本体部とは反対側に折り曲げられて本体部よりも起立部とは反対方向に突出する折曲突出部を有するため、垂木に取り付けられる折曲突出部を形成しても、本体部の範囲内に、切欠きや穴、スリット等、本体部を板厚方向に貫通する部分を形成する必要がなく、室内側から断熱材を吹き付けても断熱材が通気路側に入り込むことを抑制することができる。 In this way, when the heat insulating material is sprayed on the indoor side of the main body, the air passage forming spacer is bent from both ends of the pair of standing parts rising from the main body to the opposite side of the main body from the main body. Also has a bent protrusion that protrudes in the opposite direction to the upright part, so even if a bent protrusion that is attached to the rafters is formed, the main body such as notches, holes, slits, etc. can be made within the range of the main body. It is not necessary to form a portion that penetrates in the plate thickness direction, and even if the heat insulating material is sprayed from the indoor side, it is possible to prevent the heat insulating material from entering the ventilation path side.

本発明の通気路形成用板材は、同方向に延在する一対の垂木間に設けられて屋根裏側に通気路を形成する通気路形成用スペーサとなる通気路形成用板材であって、同方向に延在する一対の第１辺部と、前記一対の第１辺部に交差する一対の第２辺部とを有し、前記一対の第２辺部から前記一対の第１辺部に沿って延びるスリットが四隅に形成されており、一方の前記第１辺部に近い両側の前記スリットを結んで延在する折り曲げ容易な一側の側部易折曲部と、他方の前記第１辺部に近い両側の前記スリットを結んで延在する折り曲げ容易な他側の側部易折曲部と、各前記スリットから、鈍角をなしてそれぞれ近い側の前記第１辺部に延びる折り曲げ容易な隅側易折曲部と、を有することを特徴とする。 The plate material for forming an air passage of the present invention is a plate material for forming an air passage, which is provided between a pair of rafters extending in the same direction and serves as a spacer for forming an air passage on the back side of the roof. It has a pair of first side portions extending to and a pair of second side portions intersecting the pair of first side portions, and the pair of second side portions to the pair along the first side portion. The slits extending to the four corners are formed at the four corners, and one side of the easily bent portion that extends by connecting the slits on both sides close to the first side of one side and the first side of the other are easily bent. Easy-to-bend side parts that are easy to bend and extend by connecting the slits on both sides close to the part. It is characterized by having an easily bent portion on the corner side.

このように、一方の第１辺部に近い両側のスリットを結んで延在する折り曲げ容易な一側の側部易折曲部と、他方の第１辺部に近い両側のスリットを結んで延在する折り曲げ容易な他側の側部易折曲部と、各スリットから、それぞれ近い側の第１辺部に延びる折り曲げ容易な隅側易折曲部と、を有するため、一方の第１辺部に近い折り曲げ容易な一側の側部易折曲部を谷折りし、他方の第１辺部に近い折り曲げ容易な他側の側部易折曲部を谷折りし、各スリットから鈍角をなしてそれぞれ近い側の第１辺部に延びる折り曲げ容易な隅側易折曲部を山折りすると、本体部から立ち上がる一対の起立部の両端部から本体部とは反対側に折り曲げられて本体部よりも起立部とは反対方向に突出する折曲突出部を有する通気路形成用スペーサとなる。よって、容易に通気路形成用スペーサを形成することができる。 In this way, the easily bendable side side easily bent portion extending by connecting the slits on both sides near the first side portion of one side and the slits on both sides close to the first side portion of the other side are connected and extended. Since it has an existing side easy-to-fold portion on the other side that is easy to bend, and an easy-to-bend corner-side easy-folding portion that extends from each slit to the first side portion on the near side, one of the first sides. Fold the easy-to-fold side part of one side that is easy to bend close to the part, and fold the easy-to-fold part of the other side that is easy to bend near the first side of the other side, and make a blunt angle from each slit. When the easy-to-bend corner-side easy-folding part that extends to the first side of each side is folded in a mountain, it is bent from both ends of the pair of standing parts that rise from the main body to the opposite side of the main body. It is a spacer for forming an air passage having a bent protrusion that protrudes in the direction opposite to the upright portion. Therefore, the spacer for forming the air passage can be easily formed.

この場合、前記一側の側部易折曲部および前記他側の側部易折曲部は谷折り容易であり、各前記隅側折曲部は山折り容易であっても良い。 In this case, the side easy-folding portion on one side and the side easy-folding portion on the other side may be easily folded in a valley, and each corner-side bending portion may be easily folded in a mountain.

このように、一側の側部易折曲部および他側の側部易折曲部は谷折り容易であり、各隅側折曲部は山折り容易であるため、一側の側部易折曲部の谷折りが容易となり、他側の側部易折曲部の谷折りが容易となり、各隅側易折曲部の山折りが容易となる。よって、さらに容易に通気路形成用スペーサを形成することができる。 In this way, the side easy-folding part on one side and the side easy-folding part on the other side are easy to fold in valleys, and each corner side folding part is easy to fold in a mountain, so that the side part is easy to fold on one side. The valley fold of the bent portion becomes easy, the valley fold of the side easy-folded portion on the other side becomes easy, and the mountain fold of each corner side easy-folded portion becomes easy. Therefore, it is possible to more easily form the spacer for forming the air passage.

本発明によれば、施工性を向上させることが可能となる。 According to the present invention, it is possible to improve workability.

本発明に係る一実施形態の通気路形成用板材を示す平面図である。It is a top view which shows the plate material for forming a ventilation path of one Embodiment which concerns on this invention. 本発明に係る一実施形態の通気路形成用板材の要部を示す部分拡大平面図である。It is a partially enlarged plan view which shows the main part of the plate material for forming a ventilation path of one Embodiment which concerns on this invention. 本発明に係る一実施形態の通気路形成用板材の側部易折曲部近傍を示す部分拡大断面図である。It is a partially enlarged sectional view which shows the vicinity of the side side easy bending part of the plate material for forming a ventilation path of one Embodiment which concerns on this invention. 本発明に係る一実施形態の通気路形成用板材の隅側易折曲部近傍を示す部分拡大断面図である。It is a partially enlarged sectional view which shows the vicinity of the corner side easy bending part of the plate material for forming a ventilation path of one Embodiment which concerns on this invention. 本発明に係る一実施形態の通気路形成用板材の要部の変形例を示す部分拡大平面図である。It is a partially enlarged plan view which shows the modification of the main part of the plate material for forming a ventilation path of one Embodiment which concerns on this invention. 本発明に係る一実施形態の通気路形成用スペーサを示す斜視図である。It is a perspective view which shows the spacer for forming a ventilation path of one Embodiment which concerns on this invention. 本発明に係る一実施形態の屋根裏構造を示す斜視図である。It is a perspective view which shows the attic structure of one Embodiment which concerns on this invention. 本発明に係る一実施形態の屋根裏構造を示す部分拡大正断面図である。It is a partially enlarged normal sectional view which shows the attic structure of one Embodiment which concerns on this invention. 本発明に係る一実施形態の屋根裏構造を示す部分拡大側断面図である。It is a partially enlarged side sectional view which shows the attic structure of one Embodiment which concerns on this invention. 本発明に係る一実施形態の屋根裏構造を示す部分拡大正断面図である。It is a partially enlarged normal sectional view which shows the attic structure of one Embodiment which concerns on this invention.

本発明の一実施形態を図面を参照して以下に説明する。 An embodiment of the present invention will be described below with reference to the drawings.

［通気路形成用板材］
まず、図１～図５を参照して本実施形態の通気路形成用板材１０について説明する。 [Plate material for forming air passages]
First, the plate material 10 for forming a ventilation path of the present embodiment will be described with reference to FIGS. 1 to 5.

通気路形成用板材１０は、全体として平板状に形成されている。図１に示すように、通気路形成用板材１０は、同方向に延在する一対の第１辺部１１ａ，１１ｂと、一対の第１辺部１１ａ，１１ｂに交差する一対の第２辺部１１ｃ，１１ｄとを有している。具体的に、一対の第１辺部１１ａ，１１ｂは、いずれも直線状に形成されており、長さが同等で互いに平行に形成されている。一対の第２辺部１１ｃ，１１ｄは、いずれも直線状に形成されており、長さが同等で互いに平行に形成されている。第１辺部１１ａ，１１ｂと第２辺部１１ｃ，１１ｄとは直交している。 The air passage forming plate 10 is formed in a flat plate shape as a whole. As shown in FIG. 1, the ventilation path forming plate 10 has a pair of first side portions 11a and 11b extending in the same direction and a pair of second side portions intersecting the pair of first side portions 11a and 11b. It has 11c and 11d. Specifically, the pair of first side portions 11a and 11b are both formed in a straight line, have the same length, and are formed in parallel with each other. The pair of second side portions 11c and 11d are both formed in a straight line, have the same length, and are formed in parallel with each other. The first side portions 11a and 11b and the second side portions 11c and 11d are orthogonal to each other.

通気路形成用板材１０は、第１辺部１１ａ，１１ｂの長さが第２辺部１１ｃ，１１ｄの長さよりも長く、全体として長方形状に形成されている。なお、第１辺部１１ａ，１１ｂおよび第２辺部１１ｃ，１１ｄの長さを同等にして全体として正方形状に形成することも可能であり、第１辺部１１ａ，１１ｂの長さが第２辺部１１ｃ，１１ｄの長さよりも短い長方形状に形成することも可能である。しなしながら、通気路形成用板材１０は、後述する通気路形成用スペーサ１００となって、複数連設されることから、連設方向に長い長方形状とするのが好ましい。 The length of the first side portions 11a and 11b of the ventilation path forming plate 10 is longer than the length of the second side portions 11c and 11d, and the plate material 10 is formed in a rectangular shape as a whole. It is also possible to equalize the lengths of the first side portions 11a and 11b and the second side portions 11c and 11d to form a square shape as a whole, and the lengths of the first side portions 11a and 11b are second. It is also possible to form a rectangular shape shorter than the lengths of the side portions 11c and 11d. However, since the ventilation path forming plate material 10 becomes a ventilation path forming spacer 100, which will be described later, and a plurality of the ventilation path forming plate members 10 are connected in series, it is preferable to form a rectangular shape long in the connecting direction.

通気路形成用板材１０には、一対の第２辺部１１ｃ，１１ｄから一対の第１辺部１１ａ，１１ｂに沿って延びるスリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄが四隅に形成されている。すなわち、スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄは、通気路形成用板材１０の長さ方向に沿って延びている。 The ventilation path forming plate material 10 is formed with slits 15ac, 15bc, 15ad, 15bd extending from the pair of second side portions 11c, 11d along the pair of first side portions 11a, 11b at the four corners. That is, the slits 15ac, 15bc, 15ad, and 15bd extend along the length direction of the ventilation path forming plate material 10.

スリット１５ａｃは、図２に示すように、一方の第２辺部１１ｃの一方の第１辺部１１ａに近い側の所定位置から第１辺部１１ａ，１１ｂに平行に所定の長さ延びる直線状である。スリット１５ａｃは、通気路形成用板材１０の厚さ方向に貫通し、一方の第２辺部１１ｃの位置において他方の第２辺部１１ｄとは反対方向に開口している。言い換えれば、スリット１５ａｃは、その基端部１６ａｃから第１辺部１１ａ，１１ｂに平行に直線状に延びて一方の第２辺部１１ｃに抜けている。 As shown in FIG. 2, the slit 15ac has a linear shape extending by a predetermined length in parallel with the first side portions 11a and 11b from a predetermined position on the side close to the first side portion 11a of the second side portion 11c. Is. The slit 15ac penetrates in the thickness direction of the ventilation path forming plate 10 and opens in the position of one second side portion 11c in the direction opposite to the other second side portion 11d. In other words, the slit 15ac extends linearly from its base end portion 16ac in parallel with the first side portions 11a and 11b and exits to one of the second side portions 11c.

図１に示すように、スリット１５ｂｃは、スリット１５ａｃと同形状であり、一方の第２辺部１１ｃの他方の第１辺部１１ｂに近い側の所定位置から第１辺部１１ａ，１１ｂに平行に所定の長さ延びる直線状である。スリット１５ｂｃは、通気路形成用板材１０の厚さ方向に貫通し、一方の第２辺部１１ｃの位置において他方の第２辺部１１ｄとは反対方向に開口している。言い換えれば、スリット１５ｂｃは、その基端部１６ｂｃから第１辺部１１ａ，１１ｂに平行に直線状に延びて一方の第２辺部１１ｃに抜けている。 As shown in FIG. 1, the slit 15bc has the same shape as the slit 15ac, and is parallel to the first side portions 11a and 11b from a predetermined position on the side of one second side portion 11c close to the other first side portion 11b. It is a straight line extending by a predetermined length. The slit 15bc penetrates in the thickness direction of the ventilation path forming plate 10, and opens in the position of one second side portion 11c in the direction opposite to the other second side portion 11d. In other words, the slit 15bc extends linearly from its base end portion 16bc in parallel with the first side portions 11a and 11b and exits to one of the second side portions 11c.

スリット１５ａｄは、スリット１５ａｃと同形状であり、他方の第２辺部１１ｄの一方の第１辺部１１ａに近い側の所定位置から第１辺部１１ａ，１１ｂに平行に所定の長さ延びる直線状である。スリット１５ａｄは、通気路形成用板材１０の厚さ方向に貫通し、他方の第２辺部１１ｄの位置において一方の第２辺部１１ｃとは反対方向に開口している。言い換えれば、スリット１５ａｄは、その基端部１６ａｄから第１辺部１１ａ，１１ｂに平行に直線状に延びて一方の第２辺部１１ｄに抜けている。 The slit 15ad has the same shape as the slit 15ac, and is a straight line extending by a predetermined length in parallel with the first side portions 11a and 11b from a predetermined position on the side close to the first side portion 11a of the other second side portion 11d. It is a state. The slit 15ad penetrates in the thickness direction of the ventilation path forming plate 10 and opens in the position of the other second side portion 11d in the direction opposite to that of the other second side portion 11c. In other words, the slit 15ad extends linearly from its base end portion 16ad in parallel with the first side portions 11a and 11b and exits to one of the second side portions 11d.

スリット１５ｂｄは、スリット１５ａｃと同形状であり、他方の第２辺部１１ｄの他方の第１辺部１１ｂに近い側の所定位置から第１辺部１１ａ，１１ｂに平行に所定の長さ延びる直線状である。スリット１５ｂｄは、通気路形成用板材１０の厚さ方向に貫通し、他方の第２辺部１１ｄの位置において一方の第２辺部１１ｃとは反対方向に開口している。言い換えれば、スリット１５ｂｄは、その基端部１６ｂｄから第１辺部１１ａ，１１ｂに平行に直線状に延びて一方の第２辺部１１ｄに抜けている。 The slit 15bd has the same shape as the slit 15ac, and is a straight line extending by a predetermined length in parallel with the first side portions 11a and 11b from a predetermined position on the side of the other second side portion 11d close to the other first side portion 11b. It is a state. The slit 15b penetrates in the thickness direction of the ventilation path forming plate 10, and opens in the position of the other second side portion 11d in the direction opposite to that of the other second side portion 11c. In other words, the slit 15b extends linearly from its base end portion 16bd in parallel with the first side portions 11a and 11b and exits to one of the second side portions 11d.

一方の第１辺部１１ａに近い側の２カ所のスリット１５ａｃ，１５ａｄは、この第１辺部１１ａから等距離の位置に形成されており、この第１辺部１１ａと平行な同一直線上に配置されている。同様に、他方の第１辺部１１ｂに近い側の２カ所のスリット１５ｂｃ，１５ｂｄは、この第１辺部１１ｂから等距離の位置に形成されており、この第１辺部１１ｂと平行な同一直線上に配置されている。スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄは同形状であることから、長さも同等であり、幅も同等となっている。 The two slits 15ac and 15ad on the side close to the first side portion 11a are formed at equidistant positions from the first side portion 11a and are on the same straight line parallel to the first side portion 11a. Have been placed. Similarly, the two slits 15bc and 15bd on the side closer to the other first side portion 11b are formed at positions equidistant from the first side portion 11b, and are parallel to the first side portion 11b. They are arranged in a straight line. Since the slits 15ac, 15bc, 15ad, and 15bd have the same shape, they have the same length and the same width.

ここで、通気路形成用板材１０は、第１辺部１１ａ，１１ｂの長さが第２辺部１１ｃ，１１ｄの長さよりも長いため、スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄは、いずれも通気路形成用板材１０の長さ方向に沿って延在するように形成されている。 Here, since the length of the first side portions 11a and 11b is longer than the length of the second side portions 11c and 11d in the ventilation path forming plate material 10, the slits 15ac, 15bc, 15ad and 15bd are all ventilation paths. It is formed so as to extend along the length direction of the forming plate material 10.

一方の第２辺部１１ｃは、スリット１５ａｃ，１５ｂｃが形成されることにより、スリット１５ａｃ，１５ｂｃ間の中間辺部１７ｃと、スリット１５ａｃよりも中間辺部１７ｃとは反対側の端辺部１８ａｃと、スリット１５ｂｃよりも中間辺部１７ｃとは反対側の端辺部１８ｂｃと、からなっている。中間辺部１７ｃおよび端辺部１８ａｃ，１８ｂｃは、同一直線上に配置されている。 On the other hand, the second side portion 11c has an intermediate side portion 17c between the slits 15ac and 15bc and an end edge portion 18ac on the opposite side of the slit 15ac from the intermediate side portion 17c due to the formation of the slits 15ac and 15bc. , The end side portion 18bc on the side opposite to the intermediate side portion 17c from the slit 15bc. The intermediate side portions 17c and the end side portions 18ac and 18bc are arranged on the same straight line.

スリット１５ａｃは、端辺部１８ａｃの中間辺部１７ｃ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部１９ａｃと、中間辺部１７ｃの端辺部１８ａｃ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部２０ａｃとを有している。スリット１５ｂｃは、端辺部１８ｂｃの中間辺部１７ｃ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部１９ｂｃと、中間辺部１７ｃの端辺部１８ｂｃ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部２０ｂｃとを有している。 The slit 15ac extends from the end portion of the end portion 18ac on the intermediate side portion 17c side to the side portion 19ac extending in parallel with the first side portions 11a and 11b, and from the end portion of the intermediate side portion 17c on the end edge portion 18ac side. It has side portions 20ac extending in parallel with the first side portions 11a and 11b. The slit 15bc extends from the end portion of the end portion 18bc on the intermediate side portion 17c side to the side portion 19bc extending in parallel with the first side portions 11a and 11b, and from the end portion of the intermediate side portion 17c on the end side portion 18bc side. It has side portions 20bc extending in parallel with the first side portions 11a and 11b.

他方の第２辺部１１ｄは、スリット１５ａｄ，１５ｂｄが形成されることにより、スリット１５ａｄ，１５ｂｄ間の中間辺部１７ｄと、スリット１５ａｄよりも中間辺部１７ｄとは反対側の端辺部１８ａｄと、スリット１５ｂｄよりも中間辺部１７ｄとは反対側の端辺部１８ｂｄと、からなっている。中間辺部１７ｄおよび端辺部１８ａｄ，１８ｂｄは、同一直線上に配置されている。 The other second side portion 11d has an intermediate side portion 17d between the slits 15ad and 15bd due to the formation of the slits 15ad and 15bd, and an end edge portion 18ad opposite to the intermediate side portion 17d from the slit 15ad. , The end side portion 18bd on the side opposite to the intermediate side portion 17d from the slit 15bd. The intermediate side portions 17d and the end side portions 18ad and 18bd are arranged on the same straight line.

スリット１５ａｄは、端辺部１８ａｄの中間辺部１７ｄ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部１９ａｄと、中間辺部１７ｄの端辺部１８ａｄ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部２０ａｄとを有している。スリット１５ｂｄは、端辺部１８ｂｄの中間辺部１７ｄ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部１９ｂｄと、中間辺部１７ｄの端辺部１８ｂｄ側の端部から第１辺部１１ａ，１１ｂと平行に延出する辺部２０ｂｄとを有している。 The slit 15ad extends from the end portion of the end portion 18ad on the intermediate side portion 17d side to the side portion 19ad extending in parallel with the first side portions 11a and 11b, and from the end portion of the intermediate side portion 17d on the end side portion 18ad side. It has a side portion 20ad extending in parallel with the first side portions 11a and 11b. The slit 15bd extends from the end portion of the end portion 18bd on the intermediate side portion 17d side to the side portion 19bd extending in parallel with the first side portions 11a and 11b, and from the end portion of the intermediate side portion 17d on the end side portion 18bd side. It has side portions 20bd extending in parallel with the first side portions 11a and 11b.

通気路形成用板材１０は、一方の第１辺部１１ａに近い両側のスリット１５ａｃ，１５ａｄを結んで延在する折り曲げ容易な側部易折曲部２５ａと、他方の第１辺部１１ｂに近い両側のスリット１５ｂｃ，１５ｂｄを結んで延在する折り曲げ容易な側部易折曲部２５ｂと、を有している。 The ventilation path forming plate 10 is close to the easily bendable side easily bent portion 25a extending by connecting the slits 15ac and 15ad on both sides near the first side portion 11a and the other side portion 11b. It has a side easily bent portion 25b that is easily bent and extends by connecting the slits 15bc and 15bd on both sides.

側部易折曲部２５ａは、第１辺部１１ａ，１１ｂに平行な直線状であり、スリット１５ａｃ，１５ａｄと連続しこれらと同一直線上に配置されている。側部易折曲部２５ａは、通気路形成用板材１０に、その厚さ方向一側の面２８ｅ側に谷を形成する谷折りを容易とする。側部易折曲部２５ａは、例えば、図３に示すように、通気路形成用板材１０の厚さ方向一側の面２８ｅから厚さ方向他側の面２８ｆ側に向けて凹む凹溝形状である。 The side easily bent portion 25a has a linear shape parallel to the first side portions 11a and 11b, and is continuous with the slits 15ac and 15ad and arranged on the same straight line. The side easy-folding portion 25a facilitates valley folding that forms a valley on the surface 28e side on one side in the thickness direction of the ventilation path forming plate material 10. As shown in FIG. 3, for example, the side easily bent portion 25a has a concave groove shape that is recessed from the surface 28e on one side in the thickness direction of the ventilation path forming plate 10 toward the surface 28f on the other side in the thickness direction. Is.

図１に示すように、側部易折曲部２５ｂは、第１辺部１１ａ，１１ｂに平行な直線状であり、スリット１５ｂｃ，１５ｂｄと連続しこれらと同一直線上に配置されている。側部易折曲部２５ｂは、側部易折曲部２５ａと同様、通気路形成用板材１０に、その厚さ方向一側の面２８ｅ側に谷を形成する谷折りを容易とする。側部易折曲部２５ｂは、側部易折曲部２５ａと同形状であり、例えば、通気路形成用板材１０の厚さ方向一側の面２８ｅから厚さ方向他側の面２８ｆ側に向けて凹む凹溝形状である。 As shown in FIG. 1, the side easily bent portion 25b has a linear shape parallel to the first side portions 11a and 11b, and is continuous with the slits 15bc and 15bd and arranged on the same straight line. Similar to the side easy-folding portion 25a, the side easy-folding portion 25b facilitates valley folding to form a valley on the surface 28e side on one side in the thickness direction of the ventilation path forming plate material 10. The side easily bent portion 25b has the same shape as the side easily bent portion 25a, and for example, from the surface 28e on one side in the thickness direction of the ventilation path forming plate 10 to the surface 28f on the other side in the thickness direction. It has a concave groove shape that dents toward it.

通気路形成用板材１０は、スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄから、それぞれ、第１辺部１１ａ，１１ｂのうちの近い側の第１辺部に延びる折り曲げ容易な隅側易折曲部３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄを有している。 The plate material 10 for forming an air passage extends from the slits 15ac, 15bc, 15ad, and 15bd to the first side portion of the first side portions 11a and 11b on the near side, respectively, and the easily bendable corner side bending portion 31ac, It has 31bc, 31ad, and 31bd.

図２に示すように、隅側易折曲部３１ａｃは、スリット１５ａｃの、これが開口する第２辺部１１ｃとは反対側の端部である基端部１６ａｃから、第１辺部１１ａ，１１ｂのうちの、スリット１５ａｃに近い第１辺部１１ａに直線状に延びている。言い換えれば、隅側易折曲部３１ａｃは、第１辺部１１ａから直線状に延びて、スリット１５ａｃの第２辺部１１ｃとは反対側の端部である基端部１６ａｃに交差している。 As shown in FIG. 2, the corner-side easily bent portion 31ac is formed from the base end portion 16ac, which is the end of the slit 15ac opposite to the second side portion 11c to which the slit 15ac opens, to the first side portions 11a and 11b. Of these, it extends linearly to the first side portion 11a near the slit 15ac. In other words, the corner-side easily bent portion 31ac extends linearly from the first side portion 11a and intersects the base end portion 16ac, which is the end portion of the slit 15ac opposite to the second side portion 11c. ..

隅側易折曲部３１ａｃは、スリット１５ａｃ側よりも第１辺部１１ａ側の方が、第２辺部１１ｃから距離が遠くなるようにスリット１５ａｃおよび第１辺部１１ａに対し傾斜している。言い換えれば、隅側易折曲部３１ａｃは、スリット１５ａｃとのなす角が鈍角となるように形成されている。さらに言い換えれば、隅側易折曲部３１ａｃは、スリット１５ａｃから鈍角をなして近い側の第１辺部１１ａまで延びている。隅側易折曲部３１ａｃは、側部易折曲部２５ａに対しては鋭角をなしている。隅側易折曲部３１ａｃは、通気路形成用板材１０に、その厚さ方向一側の面２８ｅ側に山を形成する山折りを容易とする。隅側易折曲部３１ａｃは、例えば、図４に示すように、通気路形成用板材１０の厚さ方向他側の面２８ｆから厚さ方向一側の面２８ｅ側に向けて凹む凹溝形状である。 The corner-side easily bent portion 31ac is inclined with respect to the slit 15ac and the first side portion 11a so that the first side portion 11a side is farther from the second side portion 11c than the slit 15ac side. .. In other words, the corner-side easily bent portion 31ac is formed so that the angle formed by the slit 15ac is an obtuse angle. In other words, the corner-side easily bent portion 31ac extends from the slit 15ac to the first side portion 11a on the near side at an obtuse angle. The corner-side easy-folding portion 31ac has an acute angle with respect to the side-side easy-folding portion 25a. The corner-side easy-folding portion 31ac facilitates mountain-folding to form a mountain on the surface 28e side on one side in the thickness direction of the ventilation path forming plate material 10. As shown in FIG. 4, the corner-side easily bent portion 31ac has a concave groove shape that is recessed from the surface 28f on the other side in the thickness direction of the ventilation path forming plate 10 toward the surface 28e on the one side in the thickness direction. Is.

図１に示すように、隅側易折曲部３１ｂｃは、スリット１５ｂｃの、これが開口する第２辺部１１ｃとは反対側の端部である基端部１６ｂｃから、第１辺部１１ａ，１１ｂのうちの、スリット１５ｂｃに近い第１辺部１１ｂに直線状に延びている。言い換えれば、隅側易折曲部３１ｂｃは、第１辺部１１ｂから直線状に延びて、スリット１５ｂｃの基端部１６ｂｃに交差している。 As shown in FIG. 1, the corner-side easily bent portion 31bc has the first side portions 11a and 11b from the base end portion 16bc which is the end portion of the slit 15bc on the side opposite to the second side portion 11c to which the slit 15bc opens. Of these, it extends linearly to the first side portion 11b near the slit 15bc. In other words, the corner-side easily bent portion 31bc extends linearly from the first side portion 11b and intersects the base end portion 16bc of the slit 15bc.

隅側易折曲部３１ｂｃは、スリット１５ｂｃ側よりも第１辺部１１ｂ側の方が、第２辺部１１ｃから距離が遠くなるようにスリット１５ｂｃおよび第１辺部１１ｂに対し傾斜している。言い換えれば、隅側易折曲部３１ｂｃは、スリット１５ｂｃとのなす角が鈍角となるように形成されている。さらに言い換えれば、隅側易折曲部３１ｂｃは、スリット１５ｂｃから鈍角をなして近い側の第１辺部１１ｂまで延びている。隅側易折曲部３１ｂｃは、側部易折曲部２５ｂに対しては鋭角をなしている。隅側易折曲部３１ｂｃは、隅側易折曲部３１ａｃと同様、通気路形成用板材１０に、その厚さ方向一側の面２８ｅ側に山を形成する山折りを容易とする。隅側易折曲部３１ｂｃは、例えば、通気路形成用板材１０の厚さ方向他側の面２８ｆから厚さ方向一側の面２８ｅ側に向けて凹む凹溝形状である。 The corner side easily bent portion 31bc is inclined with respect to the slit 15bc and the first side portion 11b so that the first side portion 11b side is farther from the second side portion 11c than the slit 15bc side. .. In other words, the corner-side easily bent portion 31bc is formed so that the angle formed by the slit 15bc is an obtuse angle. In other words, the corner-side easily bent portion 31bc extends from the slit 15bc to the first side portion 11b on the near side at an obtuse angle. The corner-side easy-folding portion 31bc has an acute angle with respect to the side-side easy-folding portion 25b. Similar to the corner-side easy-folding portion 31ac, the corner-side easy-folding portion 31bc facilitates mountain-folding to form a mountain on the air passage forming plate 10 on the surface 28e side on one side in the thickness direction. The corner-side easily bent portion 31bc has, for example, a concave groove shape that is recessed from the surface 28f on the other side in the thickness direction of the ventilation path forming plate 10 toward the surface 28e on one side in the thickness direction.

隅側易折曲部３１ａｄは、スリット１５ａｄの、これが開口する第２辺部１１ｄとは反対側の端部である基端部１６ａｄから、第１辺部１１ａ，１１ｂのうちの、スリット１５ａｄに近い第１辺部１１ａに直線状に延びている。言い換えれば、隅側易折曲部３１ａｄは、第１辺部１１ａから直線状に延びて、スリット１５ａｄの基端部１６ａｄに交差している。 The corner side easy bending portion 31ad is from the base end portion 16ad, which is the end of the slit 15ad opposite to the second side portion 11d to which it opens, to the slit 15ad of the first side portions 11a, 11b. It extends linearly to the nearest first side portion 11a. In other words, the corner-side easily bent portion 31ad extends linearly from the first side portion 11a and intersects the base end portion 16ad of the slit 15ad.

隅側易折曲部３１ａｄは、スリット１５ａｄ側よりも第１辺部１１ａ側の方が、第２辺部１１ｄから距離が遠くなるようにスリット１５ａｄおよび第１辺部１１ａに対し傾斜している。言い換えれば、隅側易折曲部３１ａｄは、スリット１５ａｄとのなす角が鈍角となるように形成されている。さらに言い換えれば、隅側易折曲部３１ａｄは、スリット１５ａｄから鈍角をなして近い側の第１辺部１１ａまで延びている。隅側易折曲部３１ａｄは、側部易折曲部２５ａに対しては鋭角をなしている。隅側易折曲部３１ａｄは、隅側易折曲部３１ａｃと同様、通気路形成用板材１０に、その厚さ方向一側の面２８ｅ側に山を形成する山折りを容易とする。隅側易折曲部３１ａｄは、例えば、通気路形成用板材１０の厚さ方向他側の面２８ｆから厚さ方向一側の面２８ｅ側に向けて凹む凹溝形状である。 The corner side easily bent portion 31ad is inclined with respect to the slit 15ad and the first side portion 11a so that the first side portion 11a side is farther from the second side portion 11d than the slit 15ad side. .. In other words, the corner side easy bending portion 31ad is formed so that the angle formed by the slit 15ad is an obtuse angle. In other words, the corner side easy bending portion 31ad extends from the slit 15ad to the first side portion 11a on the near side at an obtuse angle. The corner-side easy-folding portion 31ad has an acute angle with respect to the side-side easy-folding portion 25a. Similar to the corner-side easy-folding portion 31ac, the corner-side easy-folding portion 31ad facilitates mountain-folding to form a mountain on the air passage forming plate 10 on the surface 28e side on one side in the thickness direction. The corner-side easily bent portion 31ad has, for example, a concave groove shape that is recessed from the surface 28f on the other side in the thickness direction of the ventilation path forming plate 10 toward the surface 28e on the one side in the thickness direction.

隅側易折曲部３１ｂｄは、スリット１５ｂｄの、これが開口する第２辺部１１ｄとは反対側の端部である基端部１６ｂｄから、第１辺部１１ａ，１１ｂのうちの、スリット１５ｂｄに近い第１辺部１１ｂに直線状に延びている。言い換えれば、隅側易折曲部３１ｂｄは、第１辺部１１ｂから直線状に延びて、スリット１５ｂｄの基端部１６ｂｄに交差している。 The corner-side easily bent portion 31bd is formed from the base end portion 16bd, which is the end of the slit 15bd on the side opposite to the second side portion 11d to which the slit 15bd opens, to the slit 15bd of the first side portions 11a, 11b. It extends linearly to the nearest first side portion 11b. In other words, the corner-side easily bent portion 31bd extends linearly from the first side portion 11b and intersects the base end portion 16bd of the slit 15bd.

隅側易折曲部３１ｂｄは、スリット１５ｂｄ側よりも第１辺部１１ｂ側の方が、第２辺部１１ｄから距離が遠くなるようにスリット１５ｂｄおよび第１辺部１１ｂに対し傾斜している。言い換えれば、隅側易折曲部３１ｂｄは、スリット１５ｂｄとのなす角が鈍角となるように形成されている。さらに言い換えれば、隅側易折曲部３１ｂｄは、スリット１５ｂｄから鈍角をなして近い側の第１辺部１１ｂまで延びている。隅側易折曲部３１ｂｄは、側部易折曲部２５ｂに対しては鋭角をなしている。隅側易折曲部３１ｂｄは、隅側易折曲部３１ａｃと同様、通気路形成用板材１０に、その厚さ方向一側の面２８ｅ側に山を形成する山折りを容易とする。隅側易折曲部３１ｂｄは、例えば、通気路形成用板材１０の厚さ方向他側の面２８ｆから厚さ方向一側の面２８ｅ側に向けて凹む凹溝形状である。 The corner side easily bent portion 31bd is inclined with respect to the slit 15bd and the first side portion 11b so that the first side portion 11b side is farther from the second side portion 11d than the slit 15bd side. .. In other words, the corner-side easily bent portion 31bd is formed so that the angle formed by the slit 15bd is an obtuse angle. In other words, the corner-side easily bent portion 31bd extends from the slit 15bd to the first side portion 11b on the near side at an obtuse angle. The corner-side easy-folding portion 31bd has an acute angle with respect to the side-side easy-folding portion 25b. Similar to the corner-side easy-folding portion 31ac, the corner-side easy-folding portion 31b facilitates mountain-folding to form a mountain on the air passage forming plate 10 on the surface 28e side on one side in the thickness direction. The corner-side easily bent portion 31bd has, for example, a concave groove shape that is recessed from the surface 28f on the other side in the thickness direction of the ventilation path forming plate 10 toward the surface 28e on the one side in the thickness direction.

なお、図５に示すように、隅側易折曲部３１ａｃが、スリット１５ａｃの基端部１６ａｃよりも第２辺部１１ｃ側の中間位置に交差していても良い。具体的には、隅側易折曲部３１ａｃが、スリット１５ａｃの第２辺部１１ｃ側の開口部よりも基端部１６ａｃに近い側の中間位置に交差していても良い。言い換えれば、隅側易折曲部３１ａｃは、スリット１５ａｃの長さ方向の基端部１６ａｃ側の中間位置に交差していても良い。 As shown in FIG. 5, the corner-side easily bent portion 31ac may intersect at an intermediate position on the second side portion 11c side of the base end portion 16ac of the slit 15ac. Specifically, the corner-side easily bent portion 31ac may intersect at an intermediate position on the side closer to the base end portion 16ac than the opening on the second side portion 11c side of the slit 15ac. In other words, the corner-side easily bent portion 31ac may intersect the intermediate position on the base end portion 16ac side in the length direction of the slit 15ac.

同様に、図１に示す隅側易折曲部３１ｂｃは、スリット１５ｂｃの基端部１６ｂｃよりも所定距離第２辺部１１ｃ側の中間位置に交差していても良い。同様に、隅側易折曲部３１ａｄは、スリット１５ａｄの基端部１６ａｄよりも所定距離第２辺部１１ｄ側の中間位置に交差していても良い。同様に、隅側易折曲部３１ｂｄは、スリット１５ｂｄの基端部１６ｂｄよりも所定距離第２辺部１１ｄ側の中間位置に交差していても良い。 Similarly, the corner-side easily bent portion 31bc shown in FIG. 1 may intersect at an intermediate position on the second side portion 11c side of a predetermined distance from the base end portion 16bc of the slit 15bc. Similarly, the corner-side easily bent portion 31ad may intersect at an intermediate position on the second side portion 11d side of a predetermined distance from the base end portion 16ad of the slit 15ad. Similarly, the corner-side easily bent portion 31bd may intersect at an intermediate position on the second side portion 11d side of a predetermined distance from the base end portion 16bd of the slit 15bd.

通気路形成用板材１０は、ダンボール紙からなっている。通気路形成用板材１０は、ダンボール紙からなる板材に限らず、樹脂材料からなる板材で形成することも可能である。ダンボール紙を用いる場合、平面状に広がる上板紙と、平面状に広がる下板紙と、これらの間に配置される波板紙とを有し、上板紙および下板紙が接着剤によって波板紙に貼り合わされたダンボール紙を用いることができる。あるいは、通気路形成用板材１０を、ダンボール紙からなる板材または樹脂材料からなる板材を芯材とし、芯材に、アルミニウム蒸着フィルムおよび不織布の少なくともいずれか一方が貼り合わされた複合板材で形成することも可能である。 The air passage forming plate 10 is made of corrugated cardboard. The plate material 10 for forming an air passage is not limited to a plate material made of corrugated cardboard, but can also be formed of a plate material made of a resin material. When corrugated cardboard is used, it has a flat upper paperboard, a flat lower paperboard, and a corrugated paperboard arranged between them, and the upper paperboard and the lower paperboard are bonded to the corrugated paperboard by an adhesive. Corrugated cardboard can be used. Alternatively, the ventilation path forming plate material 10 is formed of a composite plate material in which a plate material made of cardboard paper or a plate material made of a resin material is used as a core material, and at least one of an aluminum vapor deposition film and a non-woven fabric is bonded to the core material. Is also possible.

通気路形成用板材１０は、一例として、その長さ（すなわち第１辺部１１ａ，１１ｂの長さ）が９００ｍｍに、その幅（すなわち第２辺部１１ｃ，１１ｄの長さ）が４６４ｍｍに、スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄのそれぞれの長さが３０ｍｍに、スリット１５ａｃ，１５ａｄとこれらに近い側の一方の第１辺部１１ａとの距離が３０ｍｍに、スリット１５ｂｃ，１５ｂｄとこれらに近い側の他方の第１辺部１１ｂとの距離が３０ｍｍに、隅側易折曲部３１ａｃとスリット１５ａｃとのなす角、隅側易折曲部３１ｂｃとスリット１５ｂｃとのなす角、隅側易折曲部３１ａｄとスリット１５ａｄとのなす角、及び、隅側易折曲部３１ｂｄとスリット１５ｂｄとのなす角が、それぞれ１３５度に、形成されている。 As an example, the air passage forming plate 10 has a length (that is, the lengths of the first side portions 11a and 11b) of 900 mm and a width thereof (that is, the lengths of the second side portions 11c and 11d) of 464 mm. The lengths of the slits 15ac, 15bc, 15ad, and 15bd are 30 mm, the distance between the slits 15ac, 15ad and the first side portion 11a on the side close to them is 30 mm, and the slits 15bc, 15bd and the side close to them are 30 mm. The distance from the other first side portion 11b is 30 mm, the angle formed by the corner side easy bending portion 31ac and the slit 15ac, the angle formed by the corner side easy bending portion 31bc and the slit 15bc, and the corner side easy folding portion. The angle formed by the portion 31ad and the slit 15ad and the angle formed by the corner-side easily bent portion 31bd and the slit 15bd are formed at 135 degrees, respectively.

通気路形成用板材１０は、工場で製造され、工場で製造された平板状をなす状態のまま出荷されて施工現場に搬送される。そして、通気路形成用板材１０は、施工現場において、側部易折曲部２５ａ，２５ｂが、面２８ｅ側に谷を形成するように谷折りされることになり、隅側易折曲部３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄが、面２８ｅ側に山を形成するように山折りされて、図６に示すように通気路形成用スペーサ１００となる。 The ventilation path forming plate 10 is manufactured at a factory, shipped in a flat state manufactured at the factory, and transported to a construction site. Then, in the ventilation path forming plate material 10, at the construction site, the side easily bent portions 25a and 25b are valley-folded so as to form a valley on the surface 28e side, and the corner side easily bent portion 31ac is formed. , 31bc, 31ad, 31bd are folded in a mountain shape so as to form a mountain on the surface 28e side, and become the air passage forming spacer 100 as shown in FIG.

通気路形成用スペーサ１００は、図１に示す側部易折曲部２５ａ，２５ｂの間が、図６に示す平面状の本体部１０１となる。本体部１０１は、図１に示す一方の側部易折曲部２５ａおよびこれと同一直線上に配置されるスリット１５ａｃ，１５ａｄの辺部２０ａｃ，２０ａｄが、図６に示す一方の第１端縁部１０２ａとなる。また、本体部１０１は、図１に示す他方の側部易折曲部２５ｂおよびこれと同一直線上に配置されるスリット１５ｂｃ，１５ｂｄの辺部２０ｂｃ，２０ｂｄが、図６に示す他方の第１端縁部１０２ｂとなる。 In the air passage forming spacer 100, the space between the side easily bent portions 25a and 25b shown in FIG. 1 is the flat main body portion 101 shown in FIG. In the main body 101, one side of the easily bent portion 25a shown in FIG. 1 and the side portions 20ac and 20ad of the slits 15ac and 15ad arranged on the same straight line thereof have one end edge shown in FIG. It becomes part 102a. Further, in the main body 101, the other side easily bent portion 25b shown in FIG. 1 and the side portions 20bc, 20bd of the slits 15bc, 15bd arranged on the same straight line thereof are the other first side shown in FIG. It becomes the edge portion 102b.

また、本体部１０１は、図１に示す一方の第２辺部１１ｃのスリット１５ａｃ，１５ｂｃ間の中間辺部１７ｃが、図６に示す一方の第２端縁部１７ｃとなる。また、本体部１０１は、図１に示す他方の第２辺部１１ｄのスリット１５ａｄ，１５ｂｄ間の中間辺部１７ｄが、図６に示す他方の第２端縁部１７ｄとなる。本体部１０１は、同方向に延在する一対の同長さの第１端縁部１０２ａ，１０２ｂと、一対の第１端縁部１０２ａ，１０２ｂに交差する一対の同長さの第２端縁部１７ｃ，１７ｄとを有する。一対の第２端縁部１７ｃ，１７ｄは、一対の第１端縁部１０２ａ，１０２ｂに直交している。 Further, in the main body portion 101, the intermediate side portion 17c between the slits 15ac and 15bc of the one second side portion 11c shown in FIG. 1 becomes the one second end edge portion 17c shown in FIG. Further, in the main body portion 101, the intermediate side portion 17d between the slits 15ad and 15bd of the other second side portion 11d shown in FIG. 1 becomes the other second end edge portion 17d shown in FIG. The main body 101 has a pair of first edge portions 102a and 102b of the same length extending in the same direction and a pair of second edge portions of the same length intersecting the pair of first edge portions 102a and 102b. It has parts 17c and 17d. The pair of second edge portions 17c and 17d are orthogonal to the pair of first edge portions 102a and 102b.

通気路形成用スペーサ１００は、図１に示す側部易折曲部２５ａと第１辺部１１ａとの間の部分であって隅側易折曲部３１ａｃ，３１ａｄ間の部分が、図６に示す本体部１０１から立ち上がる起立部１１１ａとなる。また、通気路形成用スペーサ１００は、図１に示す側部易折曲部２５ｂと第１辺部１１ｂとの間の部分であって隅側易折曲部３１ｂｃ，３１ｂｄ間の部分が、図６に示す本体部１０１から立ち上がる起立部１１１ｂとなる。一方の起立部１１１ａは本体部１０１の一方の第１端縁部１０２ａから立ち上がり、他方の起立部１１１ｂは本体部１０１の他方の第１端縁部１０２ｂから立ち上がる。一方の起立部１１１ａは、第１端縁部１０２ａのうちの側部易折曲部２５ａが本体部１０１との境界の基端縁部２５ａとなり、他方の起立部１１１ｂは、第１端縁部１０２ｂのうちの側部易折曲部２５ｂが本体部１０１との境界の基端縁部２５ｂとなる。 The air passage forming spacer 100 is a portion between the side easily bent portion 25a and the first side portion 11a shown in FIG. 1, and the portion between the corner side easily bent portions 31ac and 31ad is shown in FIG. It is an upright portion 111a that rises from the main body portion 101 shown. Further, the air passage forming spacer 100 is a portion between the side easily bent portion 25b and the first side portion 11b shown in FIG. 1, and the portion between the corner side easily bent portions 31bc and 31bd is shown in FIG. It is an upright portion 111b that rises from the main body portion 101 shown in 6. One upright portion 111a rises from one first end edge portion 102a of the main body portion 101, and the other upright portion 111b rises from the other first end edge portion 102b of the main body portion 101. In one upright portion 111a, the side easily bent portion 25a of the first end edge portion 102a becomes the base end edge portion 25a at the boundary with the main body portion 101, and the other upright portion 111b is the first end edge portion. Of the 102b, the side easily bent portion 25b becomes the base end edge portion 25b of the boundary with the main body portion 101.

よって、通気路形成用スペーサ１００は、本体部１０１の一対の第１端縁部１０２ａ，１０２ｂから立ち上がる一対の起立部１１１ａ，１１１ｂを有している。起立部１１１ａ，１１１ｂは、本体部１０１に対しほぼ垂直に立ち上がる。なお、本体部１０１の範囲内には、起立部１１１ａ，１１１ｂとの境界部分を含めて、切欠きや穴、スリット等、本体部１０１を板厚方向に貫通する部分は形成されていない。 Therefore, the air passage forming spacer 100 has a pair of upright portions 111a, 111b that rise from the pair of first end edge portions 102a, 102b of the main body portion 101. The upright portions 111a and 111b stand up substantially perpendicular to the main body portion 101. It should be noted that, within the range of the main body portion 101, notches, holes, slits, and other portions penetrating the main body portion 101 in the plate thickness direction are not formed, including the boundary portions with the upright portions 111a and 111b.

通気路形成用スペーサ１００は、図１に示す隅側易折曲部３１ａｃと端辺部１８ａｃとの間の部分が、図６に示すように起立部１１１ａの厚さ方向において本体部１０１とは反対側に折り曲げられて本体部１０１よりも本体部１０１の厚さ方向において起立部１１１ａとは反対方向に突出する折曲突出部１２１ａｃとなる。隅側易折曲部３１ａｃは、起立部１１１ａと折曲突出部１２１ａｃとの間の折り線３１ａｃとなる。折曲突出部１２１ａｃは、本体部１０１の厚さ方向において本体部１０１よりも起立部１１１ａとは反対方向に突出する部分が先端突出部１２２ａｃとなっている。この先端突出部１２２ａｃの突出方向先端は端辺部１８ａｃである。折曲突出部１２１ａｃは、起立部１１１ａにおける第２端縁部１７ｃに近い側に設けられている。折曲突出部１２１ａｃは、折り曲げ前は起立部１１１ａから第１端縁部１０２ａに沿って延出しており、第１端縁部１０２ａに対し傾斜する直線状の折り線３１ａｃで折り曲げられることで本体部１０１よりも起立部１１１ａとは反対方向に突出する。この折り線３１ａｃは、起立部１１１ａの基端縁部２５ａとのなす角が鋭角、具体的には４５度となっている。 In the air passage forming spacer 100, the portion between the corner side easily bent portion 31ac and the end side portion 18ac shown in FIG. 1 is different from the main body portion 101 in the thickness direction of the upright portion 111a as shown in FIG. It becomes a bent protrusion 121ac that is bent to the opposite side and protrudes from the main body 101 in the thickness direction of the main body 101 in the direction opposite to the upright portion 111a. The corner-side easily bent portion 31ac is a folding line 31ac between the standing portion 111a and the bent protruding portion 121ac. The bent protrusion 121ac has a tip protrusion 122ac that protrudes from the main body 101 in the direction opposite to the upright portion 111a in the thickness direction of the main body 101. The tip of the tip protruding portion 122ac in the protruding direction is the end side portion 18ac. The bent protrusion 121ac is provided on the upright portion 111a on the side close to the second end edge portion 17c. The bent protrusion 121ac extends from the upright portion 111a along the first end edge portion 102a before bending, and is bent by a linear folding line 31ac inclined with respect to the first end edge portion 102a to form the main body. It protrudes from the portion 101 in the direction opposite to the upright portion 111a. The folding line 31ac has an acute angle formed by the upright portion 111a with the proximal edge portion 25a, specifically, 45 degrees.

また、通気路形成用スペーサ１００は、図１に示す隅側易折曲部３１ａｄと端辺部１８ａｄとの間の部分が、図６に示すように起立部１１１ａの厚さ方向において本体部１０１とは反対側に折り曲げられて本体部１０１よりも本体部１０１の厚さ方向において起立部１１１ａとは反対方向に突出する折曲突出部１２１ａｄとなる。隅側易折曲部３１ａｄは、起立部１１１ａと折曲突出部１２１ａｄとの間の折り線３１ａｄとなる。折曲突出部１２１ａｄは、本体部１０１の厚さ方向において本体部１０１よりも起立部１１１ａとは反対方向に突出する部分が先端突出部１２２ａｄとなっている。この先端突出部１２２ａｄの突出方向先端は端辺部１８ａｄである。折曲突出部１２１ａｄは、起立部１１１ａにおける第２端縁部１７ｄに近い側に設けられている。折曲突出部１２１ａｄは、折り曲げ前は起立部１１１ａから第１端縁部１０２ａに沿って延出しており、第１端縁部１０２ａに対し傾斜する直線状の折り線３１ａｄで折り曲げられることで本体部１０１よりも起立部１１１ａとは反対方向に突出する。この折り線３１ａｄは、起立部１１１ａの基端縁部２５ａとのなす角が鋭角、具体的には４５度となっている。 Further, in the air passage forming spacer 100, the portion between the corner side easily bent portion 31ad and the end side portion 18ad shown in FIG. 1 is the main body portion 101 in the thickness direction of the upright portion 111a as shown in FIG. It becomes a bent protrusion 121ad that is bent to the opposite side to the main body 101 and protrudes in the direction opposite to the upright portion 111a in the thickness direction of the main body 101. The corner-side easily bent portion 31ad is a folding line 31ad between the standing portion 111a and the bent protruding portion 121ad. The bent protrusion 121ad has a tip protrusion 122ad that protrudes from the main body 101 in the direction opposite to the upright portion 111a in the thickness direction of the main body 101. The tip of the tip protruding portion 122ad in the protruding direction is the end side portion 18ad. The bent protrusion 121ad is provided on the upright portion 111a on the side close to the second end edge portion 17d. The bent protrusion 121ad extends from the upright portion 111a along the first end edge portion 102a before bending, and is bent by a linear folding line 31ad inclined with respect to the first end edge portion 102a to form a main body. It protrudes from the portion 101 in the direction opposite to the upright portion 111a. The folding line 31ad has an acute angle formed by the upright portion 111a with the base end edge portion 25a, specifically, 45 degrees.

また、通気路形成用スペーサ１００は、図１に示す隅側易折曲部３１ｂｃと端辺部１８ｂｃとの間の部分が、図６に示すように起立部１１１ｂの厚さ方向において本体部１０１とは反対側に折り曲げられて本体部１０１よりも本体部１０１の厚さ方向において起立部１１１ｂとは反対方向に突出する折曲突出部１２１ｂｃとなる。隅側易折曲部３１ｂｃは、起立部１１１ｂと折曲突出部１２１ｂｃとの間の折り線３１ｂｃとなる。折曲突出部１２１ｂｃは、本体部１０１の厚さ方向において本体部１０１よりも起立部１１１ｂとは反対方向に突出する部分が先端突出部１２２ｂｃとなっている。この先端突出部１２２ｂｃの突出方向先端は端辺部１８ｂｃである。折曲突出部１２１ｂｃは、起立部１１１ｂにおける第２端縁部１７ｃに近い側に設けられている。折曲突出部１２１ｂｃは、折り曲げ前は起立部１１１ｂから第１端縁部１０２ｂに沿って延出しており、第１端縁部１０２ｂに対し傾斜する直線状の折り線３１ｂｃで折り曲げられることで本体部１０１よりも起立部１１１ｂとは反対方向に突出する。この折り線３１ｂｃは、起立部１１１ｂの基端縁部２５ｂとのなす角が鋭角、具体的には４５度となっている。 Further, in the air passage forming spacer 100, the portion between the corner side easily bent portion 31 bc and the end side portion 18 bc shown in FIG. 1 is the main body portion 101 in the thickness direction of the upright portion 111 b as shown in FIG. It becomes a bent protruding portion 121bc that is bent to the opposite side to the main body portion 101 and protrudes in the direction opposite to the upright portion 111b in the thickness direction of the main body portion 101. The corner-side easily bent portion 31 bc is a folded line 31 bc between the standing portion 111 b and the bent protruding portion 121 bc. The bent protrusion 121bc has a tip protrusion 122 bc at a portion that protrudes from the main body 101 in the direction opposite to the upright portion 111b in the thickness direction of the main body 101. The tip of the tip protruding portion 122 bc in the protruding direction is the end side portion 18 bc. The bent protrusion 121bc is provided on the upright portion 111b on the side close to the second end edge portion 17c. The bent protrusion 121bc extends from the upright portion 111b along the first end edge portion 102b before bending, and is bent by a linear folding line 31bc inclined with respect to the first end edge portion 102b to form the main body. It protrudes from the portion 101 in the direction opposite to the upright portion 111b. The folded line 31bc has an acute angle formed by the upright portion 111b with the base end edge portion 25b, specifically, 45 degrees.

また、通気路形成用スペーサ１００は、図１に示す隅側易折曲部３１ｂｄと端辺部１８ｂｄとの間の部分が、図６に示すように起立部１１１ｂの厚さ方向において本体部１０１とは反対側に折り曲げられて本体部１０１よりも本体部１０１の厚さ方向において起立部１１１ｂとは反対方向に突出する折曲突出部１２１ｂｄとなる。隅側易折曲部３１ｂｄは、起立部１１１ｂと折曲突出部１２１ｂｄとの間の折り線３１ｂｄとなる。折曲突出部１２１ｂｄは、本体部１０１の厚さ方向において本体部１０１よりも起立部１１１ｂとは反対方向に突出する部分が先端突出部１２２ｂｄとなっている。この先端突出部１２２ｂｄの突出方向先端は端辺部１８ｂｄである。折曲突出部１２１ｂｄは、起立部１１１ｂにおける第２端縁部１７ｄに近い側に設けられている。折曲突出部１２１ｂｄは、折り曲げ前は起立部１１１ｂから第１端縁部１０２ｂに沿って延出しており、第１端縁部１０２ｂに対し傾斜する直線状の折り線３１ｂｄで折り曲げられることで本体部１０１よりも起立部１１１ｂとは反対方向に突出する。この折り線３１ｂｄは、起立部１１１ｂの基端縁部２５ｂとのなす角が鋭角、具体的には４５度となっている。 Further, in the air passage forming spacer 100, the portion between the corner side easily bent portion 31bd and the end side portion 18bd shown in FIG. 1 is the main body portion 101 in the thickness direction of the upright portion 111b as shown in FIG. It becomes a bent protrusion 121b that is bent to the opposite side and protrudes in the direction opposite to the upright portion 111b in the thickness direction of the main body 101 from the main body 101. The corner-side easily bent portion 31bd is a folding line 31bd between the standing portion 111b and the bent protruding portion 121b. The bent protrusion 121b has a tip protruding portion 122b that protrudes from the main body 101 in the direction opposite to the upright portion 111b in the thickness direction of the main body 101. The tip of the tip protruding portion 122bd in the protruding direction is the end side portion 18bd. The bent protrusion 121bd is provided on the upright portion 111b on the side closer to the second end edge portion 17d. The bent protrusion 121b extends from the upright portion 111b along the first end edge portion 102b before bending, and is bent by a linear folding line 31bd inclined with respect to the first end edge portion 102b to form the main body. It protrudes from the portion 101 in the direction opposite to the upright portion 111b. The folded line 31bd has an acute angle formed by the upright portion 111b with the base end edge portion 25b, specifically, 45 degrees.

図１に示すスリット１５ａｃを形成していた辺部１９ａｃが、図６に示すように先端突出部１２２ａｃの先端突出部１２２ａｄとは反対側の端縁部１９ａｃとなり、図１に示すスリット１５ａｄを形成していた辺部１９ａｄが、図６に示すように先端突出部１２２ａｄの先端突出部１２２ａｃとは反対側の端縁部１９ａｄとなり、図１に示すスリット１５ｂｃを形成していた辺部１９ｂｃが、図６に示すように先端突出部１２２ｂｃの先端突出部１２２ｂｄとは反対側の端縁部１９ｂｃとなり、図１に示すスリット１５ｂｄを形成していた辺部１９ｂｄが、図６に示すように先端突出部１２２ｂｄの先端突出部１２２ｂｃとは反対側の端縁部１９ｂｄとなる。 As shown in FIG. 6, the side portion 19ac forming the slit 15ac shown in FIG. 1 becomes the end edge portion 19ac opposite to the tip protruding portion 122ad of the tip protruding portion 122ac, and the slit 15ad shown in FIG. 1 is formed. As shown in FIG. 6, the side portion 19ad that had been formed becomes the end edge portion 19ad on the side opposite to the tip protrusion 122ac of the tip protrusion 122ad, and the side portion 19bc that formed the slit 15bc shown in FIG. 1 As shown in FIG. 6, the tip protruding portion 122 bc has an edge portion 19 bc on the opposite side to the tip protruding portion 122 bc, and the side portion 19 bd forming the slit 15 bd shown in FIG. 1 has a tip protrusion as shown in FIG. The end edge portion 19bd on the side opposite to the tip protruding portion 122bc of the portion 122bd.

よって、通気路形成用スペーサ１００は、第１端縁部１０２ａ，１０２ｂの延在方向における一対の起立部１１１ａ，１１１ｂの両端部から、本体部１０１とは反対側に折り曲げられて本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを有する。 Therefore, the air passage forming spacer 100 is bent from both ends of the pair of upright portions 111a and 111b in the extending direction of the first end edge portions 102a and 102b to the opposite side to the main body portion 101 from the main body portion 101. Also has bent protrusions 121ac, 121ad, 121bc, 121bd protruding in the direction opposite to the standing portions 111a, 111b.

通気路形成用スペーサ１００は、折曲突出部１２１ａｃ，１２１ｂｃが形成されることで、本体部１０１に、折曲突出部１２１ａｃ，１２１ｂｃよりも第１端縁部１０２ａ，１０２ｂの延在方向外側に突出する本体突出部１２５ｃが形成されることになり、折曲突出部１２１ａｄ，１２１ｂｄが形成されることで、本体部１０１に、折曲突出部１２１ａｄ，１２１ｂｄよりも第１端縁部１０２ａ，１０２ｂの延在方向外側に突出する本体突出部１２５ｄが形成されることになる。本体突出部１２５ｃは突出方向先端が第２端縁部１７ｃとなっており、本体突出部１２５ｄは突出方向先端が第２端縁部１７ｄとなっている。本体部１０１は、これら本体突出部１２５ｃ，１２５ｄと、これらの間の主体部１２６とを有している。主体部１２６は、第１端縁部１０２ａ，１０２ｂの延在方向において、折曲突出部１２１ａｃ，１２１ｂｃ，１２１ａｄ，１２１ｂｄを含む、これらの内側範囲に設けられている。本体突出部１２５ｃ，１２５ｄは主体部１２６から反対方向に突出している。 In the air passage forming spacer 100, the bent protrusions 121ac and 121bc are formed, so that the main body 101 is outside the extending direction of the first end edge portions 102a and 102b with respect to the bent protrusions 121ac and 121bc. The protruding main body projecting portions 125c are formed, and the bent protruding portions 121ad and 121bd are formed, so that the main body portion 101 has the first end edge portions 102a and 102b rather than the bent protruding portions 121ad and 121b. A main body protruding portion 125d is formed so as to project outward in the extending direction. The protruding portion 125c of the main body has a second end edge portion 17c in the protruding direction, and the protruding portion 125d of the main body has a second end edge portion 17d in the protruding direction. The main body 101 has these main body protrusions 125c and 125d, and a main body 126 between them. The main body portion 126 is provided in the inner range thereof including the bent protrusions 121ac, 121bc, 121ad, 121bd in the extending direction of the first end edge portions 102a, 102b. The main body projecting portions 125c and 125d project in the opposite direction from the main body portion 126.

図１に示す隅側易折曲部３１ａｃとスリット１５ａｃとのなす角が１３５度に形成されているため、図６に示すように、先端突出部１２２ａｃは、本体部１０１からほぼ垂直に突出し、その突出方向先端の端辺部１８ａｃが本体部１０１とほぼ平行をなす。同様に、図１に示す隅側易折曲部３１ｂｃとスリット１５ｂｃとのなす角、隅側易折曲部３１ａｄとスリット１５ａｄとのなす角、及び、隅側易折曲部３１ｂｄとスリット１５ｂｄとのなす角が、それぞれ１３５度に形成されているため、図６に示すように、先端突出部１２２ｂｃは、本体部１０１からほぼ垂直に突出して端辺部１８ｂｃが本体部１０１とほぼ平行をなし、先端突出部１２２ａｄは、本体部１０１からほぼ垂直に突出して端辺部１８ａｄが本体部１０１とほぼ平行をなし、先端突出部１２２ｂｄは、本体部１０１からほぼ垂直に突出して端辺部１８ｂｄが本体部１０１とほぼ平行をなす。 Since the angle formed by the corner-side easily bent portion 31ac and the slit 15ac shown in FIG. 1 is formed at 135 degrees, the tip protruding portion 122ac protrudes substantially vertically from the main body portion 101 as shown in FIG. The end edge portion 18ac at the tip in the protruding direction is substantially parallel to the main body portion 101. Similarly, the angle formed by the corner-side easy-folding portion 31bc and the slit 15bc, the angle formed by the corner-side easy-folding portion 31ad and the slit 15ad, and the corner-side easy-folding portion 31bd and the slit 15bd shown in FIG. As shown in FIG. 6, the tip protruding portion 122bc protrudes substantially vertically from the main body 101, and the end portion 18 bc is substantially parallel to the main body 101 because the angles formed by the two are formed at 135 degrees. The tip protruding portion 122ad protrudes substantially vertically from the main body 101, and the end side portion 18ad is substantially parallel to the main body portion 101. It is almost parallel to the main body 101.

なお、図１に示すスリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄが同方向に沿うように形成された状態において、隅側易折曲部３１ａｃとスリット１５ａｃとのなす角、隅側易折曲部３１ｂｃとスリット１５ｂｃとのなす角、隅側易折曲部３１ａｄとスリット１５ａｄとのなす角、及び、隅側易折曲部３１ｂｄとスリット１５ｂｄとのなす角は、鈍角であれば、１３５度に限らない。これらのなす角を、それぞれ１３５度よりも大きい例えば１５０度としたり、１３５度よりも小さい例えば１２０度としたりしても、図６に示す先端突出部１２２ａｃ，１２２ｂｃ，１２２ａｄ，１２２ｂｄは、本体部１０１から起立部１１１ａ，１１１ｂとは反対側に突出することになる。 In a state where the slits 15ac, 15bc, 15ad, and 15bd shown in FIG. 1 are formed so as to follow the same direction, the angle formed by the corner-side easily bent portion 31ac and the slit 15ac, and the corner-side easily bent portion 31bc. The angle formed by the slit 15bc, the angle formed by the corner-side easy-folding portion 31ad and the slit 15ad, and the angle formed by the corner-side easy-folding portion 31bd and the slit 15bd are not limited to 135 degrees as long as they are obtuse. .. Even if the angle formed by these is set to, for example, 150 degrees, which is larger than 135 degrees, or 120 degrees, for example, which is smaller than 135 degrees, the tip protrusions 122ac, 122bc, 122ad, 122db shown in FIG. 6 are the main body portions. It will protrude from 101 to the side opposite to the standing portions 111a and 111b.

通気路形成用スペーサ１００は、図７に示す屋根２０１の平板状の野地板２０２を支持する平行な垂木２０３ａ，２０３ｂ間に取り付けられる。垂木２０３ａ，２０３ｂは、いずれも同サイズの角材であり、垂木２０３ａの垂木２０３ｂ側の側面２１１ａと、垂木２０３ｂの垂木２０３ａ側の側面２１１ｂとが互いに平行をなして対向する。垂木２０３ａの野地板２０２とは反対側に向く下面２１２ａと、垂木２０３ｂの野地板２０２とは反対側に向く下面２１２ｂとは、野地板２０２と平行な同一平面に配置される。 The air passage forming spacer 100 is attached between the parallel rafters 203a and 203b that support the flat plate-shaped field plate 202 of the roof 201 shown in FIG. 7. The rafters 203a and 203b are square lumbers of the same size, and the side surface 211a of the rafter 203a on the rafter 203b side and the side surface 211b of the rafter 203b on the rafter 203a side face each other in parallel. The lower surface 212a of the rafter 203a facing away from the field board 202 and the lower surface 212b of the rafter 203b facing opposite to the field board 202 are arranged on the same plane parallel to the field board 202.

作業者は、通気路形成用スペーサ１００を施工する場合、通気路形成用スペーサ１００を垂木２０３ａ，２０３ｂ間に配置する。例えば、垂木２０３ａ，２０３ｂ間に野地板２０２とは反対側、言い換えれば室内側から通気路形成用スペーサ１００を施工する場合、作業者は、通気路形成用スペーサ１００を、垂木２０３ａ，２０３ｂ間に野地板２０２とは反対側、言い換えれば室内側から挿入することになる。その際に、作業者は、折曲突出部１２１ａｃ，１２１ｂｃ，１２１ａｄ，１２１ｂｄの先端突出部１２２ａｃ，１２２ｂｃ，１２２ａｄ，１２２ｂｄが本体部１０１から野地板２０２とは反対側、すなわち室内側に突出する向きで、起立部１１１ａ，１１１ｂが野地板２０２に当接するまで挿入する。すると、通気路形成用スペーサ１００は、本体部１０１が野地板２０２と平行をなし、一方の起立部１１１ａが垂木２０３ａの側面２１１ａに、図６に示す他方の起立部１１１ｂが図７に示す垂木２０３ｂの側面２１１ｂに当接する。また、折曲突出部１２１ａｃ，１２１ｂｃ，１２１ａｄ，１２１ｂｄの先端突出部１２２ａｃ，１２２ｂｃ，１２２ａｄ，１２２ｂｄが本体部１０１よりも垂木２０３ａ，２０３ｂの下面２１２ａ，２１２ｂ側に突出して、折曲突出部１２１ａｃ，１２１ａｄが垂木２０３ａの側面２１１ａに、折曲突出部１２１ｂｃ，１２１ｂｄが垂木２０３ｂの側面２１１ｂに、それぞれ当接する。 When constructing the air passage forming spacer 100, the operator arranges the air passage forming spacer 100 between the rafters 203a and 203b. For example, when constructing the air passage forming spacer 100 between the rafters 203a and 203b on the side opposite to the field board 202, in other words, from the indoor side, the operator installs the air passage forming spacer 100 between the rafters 203a and 203b. It will be inserted from the opposite side of the field board 202, in other words, from the indoor side. At that time, the operator is in the direction in which the tip protrusions 122ac, 122bc, 122ad, 122b of the bent protrusions 121ac, 121bc, 121ad, 121bd project from the main body 101 to the side opposite to the field board 202, that is, to the indoor side. Then, the standing portions 111a and 111b are inserted until they come into contact with the field plate 202. Then, in the air passage forming spacer 100, the main body 101 is parallel to the field plate 202, one upright portion 111a is on the side surface 211a of the rafter 203a, and the other upright portion 111b shown in FIG. 6 is the rafter shown in FIG. It abuts on the side surface 211b of 203b. Further, the tip protrusions 122ac, 122bc, 122ad, 122bd of the bent protrusions 121ac, 121bc, 121ad, 121bd protrude from the main body 101 toward the lower surfaces 212a, 212b of the rafters 203a, 203b, and the bent protrusions 121ac, 121ad abuts on the side surface 211a of the rafter 203a, and the bent protrusions 121bc and 121b abut on the side surface 211b of the rafter 203b, respectively.

ここで、通気路形成用スペーサ１００が、野地板２０２および垂木２０３ａ，２０３ｂに対し、このような関係になるように、図１に示す通気路形成用板材１０は形成されている。すなわち、通気路形成用板材１０は、スリット１５ａｃ，１５ａｄと、スリット１５ｂｃ，１５ｂｄとの間隔が、図７に示す垂木２０３ａ，２０３ｂの側面２１１ａ，２１１ｂ間の間隔とほぼ同等となるように形成されている。また、図１に示す通気路形成用板材１０は、スリット１５ａｃ，１５ａｄおよび第１辺部１１ａの距離と、スリット１５ｂｃ，１５ｂｄおよび第１辺部１１ｂの距離とが、図７に示す野地板２０２と垂木２０３ａ，２０３ｂの下面２１２ａ，２１２ｂとの距離、すなわち垂木２０３ａ，２０３ｂの側面２１１ａ，２１１ｂの高さよりも短く形成されている。 Here, the ventilation path forming plate 10 shown in FIG. 1 is formed so that the ventilation path forming spacer 100 has such a relationship with the field board 202 and the rafters 203a and 203b. That is, the ventilation path forming plate material 10 is formed so that the distance between the slits 15ac and 15ad and the slits 15bc and 15bd is substantially the same as the distance between the side surfaces 211a and 211b of the rafters 203a and 203b shown in FIG. ing. Further, in the ventilation path forming plate 10 shown in FIG. 1, the distance between the slits 15ac, 15ad and the first side portion 11a and the distance between the slits 15bc, 15bd and the first side portion 11b are the same as the field plate 202 shown in FIG. It is formed to be shorter than the distance between the rafters 203a and 203b and the lower surfaces 212a and 212b, that is, the heights of the side surfaces 211a and 211b of the rafters 203a and 203b.

そして、作業者は、上記のように配置された通気路形成用スペーサ１００の先端突出部１２２ａｃに垂木２０３ａとは反対側からタッカーで、図８に示すように針２２１を打って先端突出部１２２ａｃを垂木２０３ａの側面２１１ａに押し当てて固定する。同様にして、図７に示す先端突出部１２２ａｄに垂木２０３ａとは反対側からタッカーで針２２１を打って先端突出部１２２ａｄを垂木２０３ａの側面２１１ａに押し当てて固定する。同様に、先端突出部１２２ｂｃに垂木２０３ｂとは反対側からタッカーで針２２１を打って先端突出部１２２ｂｃを垂木２０３ｂの側面２１１ｂに押し当てて固定し、先端突出部１２２ｂｄに垂木２０３ｂとは反対側からタッカーで針２２１を打って先端突出部１２２ｂｄを垂木２０３ｂの側面２１１ｂに押し当てて固定する。 Then, the operator hits the needle 221 on the tip protruding portion 122ac of the air passage forming spacer 100 arranged as described above with a tacker from the side opposite to the rafter 203a, and hits the needle 221 to the tip protruding portion 122ac. Is pressed against the side surface 211a of the rafter 203a to fix it. Similarly, the needle 221 is hit against the tip protruding portion 122ad shown in FIG. 7 from the side opposite to the rafter 203a with a tacker, and the tip protruding portion 122ad is pressed against the side surface 211a of the rafter 203a to be fixed. Similarly, the needle 221 is hit against the tip protruding portion 122 bc from the side opposite to the rafter 203b with a tacker to press the tip protruding portion 122 bc against the side surface 211 b of the rafter 203 b to fix it, and fix the tip protruding portion 122 b to the side opposite to the rafter 203 b. The needle 221 is hit with a tucker to press the tip protrusion 122b against the side surface 211b of the rafter 203b to fix it.

これにより、屋根２０１は、通気路形成用スペーサ１００が、一対の起立部１１１ａ，１１１ｂを一対の垂木２０３ａ，２０３ｂに沿って配置し、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを本体部１０１よりも室内側に突出させて、折曲突出部１２１ａｃ，１２１ａｄの先端突出部１２２ａｃ，１２２ａｄにおいて垂木２０３ａに、折曲突出部１２１ｂｃ，１２１ｂｄの先端突出部１２２ｂｃ，１２２ｂｄにおいて垂木２０３ｂに、それぞれ取り付けられた屋根裏構造になる。 As a result, in the roof 201, the air passage forming spacer 100 arranges the pair of upright portions 111a, 111b along the pair of rafters 203a, 203b, and the bent protrusions 121ac, 121ad, 121bc, 121bd are the main body portions 101. It is attached to the rafters 203a at the tip protrusions 122ac and 122ad of the bent protrusions 121ac and 121ad, and to the rafters 203b at the tip protrusions 122bc and 122b of the bent protrusions 121bc and 121db, respectively. It becomes an attic structure.

ここで、垂木２０３ａ，２０３ｂの長さは、通気路形成用スペーサ１００よりも長いため、垂木２０３ａ，２０３ｂの延在方向に沿って通気路形成用スペーサ１００が複数連設されることになる。 Here, since the length of the rafters 203a and 203b is longer than that of the air passage forming spacer 100, a plurality of air passage forming spacers 100 are continuously provided along the extending direction of the rafters 203a and 203b.

例えば、上記のようにして垂木２０３ａ，２０３ｂに取り付けられた既設の通気路形成用スペーサ１００の第２端縁部１７ｃ側に、図９に示すように、次設の通気路形成用スペーサ１００を配置する場合、作業者は、次設の通気路形成用スペーサ１００を、上記と同様に、折曲突出部１２１ａｃ，１２１ｂｃ，１２１ａｄ，１２１ｂｄの先端突出部１２２ａｃ，１２２ｂｃ，１２２ａｄ，１２２ｂｄが本体部１０１から野地板２０２とは反対側に突出する向きで、垂木２０３ａ，２０３ｂ間に野地板２０２とは反対側から起立部１１１ａ，１１１ｂが野地板２０２に当接するまで挿入する。 For example, as shown in FIG. 9, the next air passage forming spacer 100 is provided on the second end edge portion 17c side of the existing air passage forming spacer 100 attached to the rafters 203a and 203b as described above. When arranging the spacer 100 for forming the next air passage, the operator may use the bent protrusions 121ac, 121bc, 121ad, 121b and the tip protrusions 122ac, 122bc, 122ad, 122bd as the main body 101 in the same manner as described above. Insert from the side opposite to the field board 202 between the rafters 203a and 203b until the standing portions 111a and 111b come into contact with the field board 202 in a direction protruding from the field plate 202.

その際に、図９に示すように、垂木２０３ａの延在方向において、既設の通気路形成用スペーサ１００の本体部１０１の主体部１２６に、次設の通気路形成用スペーサ１００の本体突出部１２５ｄを、既設の通気路形成用スペーサ１００の本体突出部１２５ｃに、次設の通気路形成用スペーサ１００の主体部１２６を、それぞれ重ね合わせる。また、既設の通気路形成用スペーサ１００の先端突出部１２２ａｃの本体突出部１２５ｃ側の端縁部１９ａｃに、次設の通気路形成用スペーサ１００の先端突出部１２２ａｄの本体突出部１２５ｄ側の端縁部１９ａｄを突き当てる。それとともに、既設の通気路形成用スペーサ１００の先端突出部１２２ｂｃの本体突出部１２５ｃ側の端縁部１９ｂｃに、次設の通気路形成用スペーサ１００の先端突出部１２２ｂｄの本体突出部１２５ｄ側の端縁部１９ｂｄを突き当てる。なお、このとき、端縁部１９ａｃと端縁部１９ａｄとを突き当てなくても良く、同様に、端縁部１９ｂｃと端縁部１９ｂｄとを突き当てなくても良い。 At that time, as shown in FIG. 9, in the extending direction of the rafter 203a, the main body portion 126 of the main body portion 101 of the existing ventilation path forming spacer 100 has a main body protruding portion of the next ventilation path forming spacer 100. The 125d is superposed on the main body protruding portion 125c of the existing air passage forming spacer 100 with the main body portion 126 of the next air passage forming spacer 100. Further, at the end edge portion 19ac on the main body protruding portion 125c side of the tip protruding portion 122ac of the existing ventilation path forming spacer 100, the end of the tip protruding portion 122ad of the next ventilation path forming spacer 100 on the main body protruding portion 125d side. The edge 19ad is abutted. At the same time, at the end edge portion 19bc on the main body protruding portion 125c side of the tip protruding portion 122bc of the existing ventilation path forming spacer 100, on the main body protruding portion 125d side of the tip protruding portion 122b of the next ventilation path forming spacer 100. The edge portion 19db is abutted. At this time, the edge portion 19ac and the edge portion 19ad may not be abutted against each other, and similarly, the end edge portion 19bc and the end edge portion 19bd may not be abutted against each other.

そして、図９に示すように、次設の通気路形成用スペーサ１００の先端突出部１２２ａｄに垂木２０３ａとは反対側からタッカーで針２２１を打って先端突出部１２２ａｄを垂木２０３ａの側面２１１ａに固定する。それとともに、先端突出部１２２ｂｄに、垂木２０３ｂとは反対側からタッカーで針２２１を打って先端突出部１２２ｂｄを垂木２０３ｂの側面２１１ｂに固定し、先端突出部１２２ａｃに垂木２０３ａとは反対側からタッカーで針２２１を打って先端突出部１２２ａｃを垂木２０３ａの側面２１１ａに固定し、先端突出部１２２ｂｃに垂木２０３ｂとは反対側からタッカーで針２２１を打って先端突出部１２２ｂｃを垂木２０３ｂの側面２１１ｂに固定する。 Then, as shown in FIG. 9, the tip protruding portion 122ad is fixed to the side surface 211a of the rafter 203a by hitting the needle 221 with a tacker from the side opposite to the rafter 203a on the tip protruding portion 122ad of the next air passage forming spacer 100. do. At the same time, the needle 221 is hit on the tip protrusion 122b from the side opposite to the rafter 203b with a tacker to fix the tip protrusion 122b to the side surface 211b of the rafter 203b, and the tip protrusion 122ac is tacked from the side opposite to the rafter 203a. The needle 221 is hit to fix the tip protrusion 122ac to the side surface 211a of the rafter 203a, and the needle 221 is hit to the tip protrusion 122bc from the side opposite to the rafter 203b with a tacker to attach the tip protrusion 122bc to the side surface 211b of the rafter 203b. Fix it.

以上を繰り返すことにより、垂木２０３ａ，２０３ｂ間に適宜の数の通気路形成用スペーサ１００を垂木２０３ａ，２０３ｂの延在方向に直列に連設し、野地板２０２の垂木２０３ａ，２０３ｂ間の部分を、このように連設された複数の通気路形成用スペーサ１００で覆うことになる。その結果、垂木２０３ａ，２０３ｂと、これらの間の野地板２０２と、複数の直列に連設された通気路形成用スペーサ１００との間に通気路２３１が形成されることになる。通気路２３１は、垂木２０３ａ，２０３ｂに沿って延在して家屋の軒から棟に向けて通気を行う。よって、通気路形成用スペーサ１００は、同方向に延在する一対の垂木２０３ａ，２０３ｂ間に設けられて屋根裏側に通気路２３１を形成することになる。通気路形成用板材１０は、折り曲げられて、同方向に延在する一対の垂木２０３ａ，２０３ｂ間に設けられて屋根裏側に通気路２３１を形成する通気路形成用スペーサ１００となる。 By repeating the above, an appropriate number of air passage forming spacers 100 are connected in series between the rafters 203a and 203b in the extending direction of the rafters 203a and 203b, and the portion between the rafters 203a and 203b of the field board 202 is formed. , It will be covered with a plurality of air passage forming spacers 100 which are continuously provided in this way. As a result, the ventilation passage 231 is formed between the rafters 203a and 203b, the field board 202 between them, and the plurality of serially connected ventilation passage forming spacers 100. The ventilation path 231 extends along the rafters 203a and 203b to ventilate from the eaves of the house to the ridge. Therefore, the air passage forming spacer 100 is provided between the pair of rafters 203a and 203b extending in the same direction, and forms the air passage 231 on the attic side. The ventilation path forming plate 10 is bent and is provided between the pair of rafters 203a and 203b extending in the same direction to form the ventilation path forming spacer 100 on the attic side to form the ventilation path 231.

なお、屋根側からの輻射熱を反射させるためには、芯材にアルミニウム蒸着フィルムを貼り合わせることで、通気路形成用板材１０の面２８ｅをアルミニウム蒸着フィルムで構成し、通気路形成用スペーサ１００の本体部１０１の板厚方向における起立部１１１ａ，１１１ｂ側および起立部１１１ａ，１１１ｂの板厚方向における本体部１０１側、すなわち通気路形成用スペーサ１００の室外側（屋根側）をアルミニウム蒸着フィルムで構成するのが良い。この場合、通気路形成用板材１０の成形上、通気路形成用板材１０の面２８ｅの全面をアルミニウム蒸着フィルムで構成するのが好ましい。 In order to reflect the radiant heat from the roof side, the aluminum vapor deposition film is attached to the core material, so that the surface 28e of the air passage forming plate 10 is made of the aluminum vapor deposition film, and the air passage forming spacer 100 is used. The upright portions 111a, 111b side in the plate thickness direction of the main body portion 101 and the main body portion 101 side in the plate thickness direction of the upright portions 111a, 111b, that is, the outdoor side (roof side) of the spacer 100 for forming a ventilation path is made of an aluminum vapor deposition film. It is good to do. In this case, in order to mold the air passage forming plate material 10, it is preferable that the entire surface 28e of the air passage forming plate material 10 is made of an aluminum-deposited film.

また、通気路形成用スペーサ１００の補強および防水のため芯材に不織布を貼り合わせる場合、通気路形成用板材１０の面２８ｆを不織布で構成し、通気路形成用スペーサ１００の本体部１０１の板厚方向における起立部１１１ａ，１１１ｂとは反対側および起立部１１１ａ，１１１ｂの板厚方向における本体部１０１とは反対側、すなわち通気路形成用スペーサ１００の室内側を不織布で構成するのが良い。この場合も、通気路形成用板材１０の成形上、通気路形成用板材１０の面２８ｆの全面を不織布で構成するのが好ましい。 Further, when the non-woven fabric is attached to the core material for reinforcement and waterproofing of the air passage forming spacer 100, the surface 28f of the air passage forming plate 10 is made of the non-woven fabric, and the plate of the main body 101 of the air passage forming spacer 100 is formed. It is preferable that the side opposite to the upright portions 111a and 111b in the thickness direction and the side opposite to the main body portion 101 in the plate thickness direction of the upright portions 111a and 111b, that is, the indoor side of the air passage forming spacer 100 is made of non-woven fabric. In this case as well, it is preferable that the entire surface of the surface 28f of the air passage forming plate 10 is made of a non-woven fabric for molding the air passage forming plate 10.

以上により、屋根２０１は、複数の通気路形成用スペーサ１００が、それぞれ、一対の起立部１１１ａ，１１１ｂを一対の垂木２０３ａ，２０３ｂに沿って配置し、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを本体部１０１よりも室内側に突出させて、折曲突出部１２１ａｃ，１２１ａｄの先端突出部１２２ａｃ，１２２ａｄにおいて垂木２０３ａに取り付けられ、折曲突出部１２１ｂｃ，１２１ｂｄの先端突出部１２２ｂｃ，１２２ｂｄにおいて垂木２０３ｂに取り付けられることになる。その際に、複数の通気路形成用スペーサ１００は、隣り合うもの同士が、本体部１０１，１０１同士を重ね合わせて垂木２０３ａ，２０３ｂの延在方向に連設された構造になる。 As described above, in the roof 201, the plurality of air passage forming spacers 100 have a pair of upright portions 111a and 111b arranged along the pair of rafters 203a and 203b, respectively, and the bent protrusions 121ac, 121ad, 121bc and 121bd. Is attached to the rafters 203a at the tip protrusions 122ac and 122ad of the bent protrusions 121ac and 121ad, and the rafters are attached to the rafters 122bc and 122b at the tip protrusions 122bc and 122b of the bent protrusions 121bc and 121db. It will be attached to 203b. At that time, the plurality of air passage forming spacers 100 have a structure in which adjacent ones are superposed on the main bodies 101 and 101 and are continuously provided in the extending direction of the rafters 203a and 203b.

そして、屋根２０１の必要なすべての部分に、上記のようにして通気路形成用スペーサ１００を設置して通気路２３１を形成する。その後、作業者は、必要なすべての通気路形成用スペーサ１００の主に本体部１０１と垂木２０３ａ，２０３ｂとに、図１０に示すように室内側からウレタン等の発泡性の断熱材２４１を吹き付け固化させる。ここで、このようにウレタンを吹き付けることから、通気路形成用スペーサ１００は、ダンボール紙で形成されるのが好ましい。 Then, the air passage forming spacer 100 is installed in all the necessary parts of the roof 201 as described above to form the air passage 231. After that, the operator sprays a foamable heat insulating material 241 such as urethane from the indoor side as shown in FIG. 10 mainly on the main body 101 and the rafters 203a and 203b of all the necessary air passage forming spacers 100. Solidify. Here, since urethane is sprayed in this way, it is preferable that the air passage forming spacer 100 is made of corrugated cardboard.

これにより、屋根２０１が通気路形成用スペーサ１００の主に本体部１０１および先端突出部１２２ａｃ，１２２ｂｃ，１２２ａｄ，１２２ｂｄと垂木２０３ａ，２０３ｂの下面２１２ａ，２１２ｂおよび側面２１１ａ，２１１ｂとに室内側から断熱材２４１が吹き付けられた構造となる。 As a result, the roof 201 is heat-insulated from the indoor side mainly to the main body 101, the tip protrusions 122ac, 122bc, 122ad, 122bd and the lower surfaces 212a, 212b and the side surfaces 211a, 211b of the rafters 203a, 203b of the air passage forming spacer 100. The structure is such that the material 241 is sprayed.

以上に述べたように、本実施形態の通気路形成用スペーサ１００は、本体部１０１の一対の第１端縁部１０２ａ，１０２ｂから立ち上がる一対の起立部１１１ａ，１１１ｂの、第１端縁部１０２ａ，１０２ｂの延在方向における両端部から、本体部１０１とは反対側に折り曲げられて本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを有する。作業者は、一対の起立部１１１ａ，１１１ｂを一対の垂木２０３ａ，２０３ｂに沿って配置し、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを本体部１０１よりも室内側に突出させた状態で、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄにおいて通気路形成用スペーサ１００を垂木２０３ａ，２０３ｂに取り付けることになる。その際に、通気路形成用スペーサ１００は、垂木２０３ａ，２０３ｂの延在方向において、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄが通気路形成用スペーサ１００の端部近傍に配置されることになる。 As described above, the air passage forming spacer 100 of the present embodiment is the first end edge portion 102a of the pair of upright portions 111a, 111b rising from the pair of first end edge portions 102a, 102b of the main body portion 101. , 102b, bent protrusions 121ac, 121ad, 121bc, 121bd that are bent from both ends in the extending direction to the opposite side of the main body 101 and project from the main body 101 in the direction opposite to the standing portions 111a, 111b. Have. The operator arranges the pair of upright portions 111a, 111b along the pair of rafters 203a, 203b, and the bent protrusions 121ac, 121ad, 121bc, 121bd are projected toward the room side from the main body 101. At the bent protrusions 121ac, 121ad, 121bc, 121bd, the air passage forming spacer 100 is attached to the rafters 203a, 203b. At that time, in the air passage forming spacer 100, the bent protrusions 121ac, 121ad, 121bc, 121bd are arranged in the vicinity of the end portion of the air passage forming spacer 100 in the extending direction of the rafters 203a and 203b. Become.

よって、通気路形成用スペーサ１００を垂木２０３ａ，２０３ｂの延在方向に複数連設する際に、既設のものの折曲突出部１２１ａｃ，１２１ｂｃあるいは折曲突出部１２１ａｄ，１２１ｂｄの近傍に次設のものの折曲突出部１２１ａｄ，１２１ｂｄあるいは折曲突出部１２１ａｃ，１２１ｂｃが位置することになり、既設のものに対する位置を合わせての次設のものの垂木２０３ａ，２０３ｂへの取り付けが容易となる。よって、通気路形成用スペーサ１００を垂木２０３ａ，２０３ｂの延在方向に複数連設して垂木２０３ａ，２０３ｂに取り付ける際の施工性を向上させることが可能となる。 Therefore, when a plurality of air passage forming spacers 100 are connected in a row in the extending direction of the rafters 203a and 203b, the existing ones are installed next to the bent protrusions 121ac and 121bc or the bent protrusions 121ad and 121bd. The bent protrusions 121ad, 121bd or the bent protrusions 121ac, 121bc will be located, and it will be easy to attach the next one to the rafters 203a, 203b by aligning the positions with respect to the existing one. Therefore, it is possible to improve the workability when a plurality of air passage forming spacers 100 are continuously provided in the extending direction of the rafters 203a and 203b and attached to the rafters 203a and 203b.

また、本体部１０１から立ち上がる一対の起立部１１１ａ，１１１ｂの両端部から本体部１０１とは反対側に折り曲げられて本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを有するため、一枚の通気路形成用板材１０を折り曲げて容易に通気路形成用スペーサ１００を製造することができる。 Further, a bent protrusion portion that is bent from both ends of a pair of upright portions 111a and 111b rising from the main body portion 101 to the opposite side to the main body portion 101 and protrudes from the main body portion 101 in the direction opposite to the upright portions 111a and 111b. Since it has 121ac, 121ad, 121bc, and 121bd, it is possible to easily manufacture the air passage forming spacer 100 by bending one piece of the air passage forming plate material 10.

また、本体部１０１から立ち上がる一対の起立部１１１ａ，１１１ｂの両端部から本体部１０１とは反対側に折り曲げられて本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを有するため、垂木２０３ａ，２０３ｂに取り付けられる折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを形成しても、本体部１０１の範囲内に起立部１１１ａ，１１１ｂとの境界部分を含めて、切欠きや穴、スリット等、本体部１０１を板厚方向に貫通する部分を形成する必要がない。通気路形成用スペーサ１００に、このような貫通部分が形成されていないため、室内側から断熱材２４１を吹き付けても断熱材２４１が通気路２３１側に入り込むことを抑制することができる。 Further, a bent protrusion portion that is bent from both ends of a pair of upright portions 111a and 111b rising from the main body portion 101 to the opposite side to the main body portion 101 and protrudes from the main body portion 101 in the direction opposite to the upright portions 111a and 111b. Since it has 121ac, 121ad, 121bc, 121bd, even if the bent protrusions 121ac, 121ad, 121bc, 121bd attached to the rafters 203a, 203b are formed, the boundary with the upright portions 111a, 111b is within the range of the main body portion 101. It is not necessary to form a portion such as a notch, a hole, a slit, etc. that penetrates the main body portion 101 in the plate thickness direction, including the portion. Since such a penetrating portion is not formed in the air passage forming spacer 100, it is possible to prevent the heat insulating material 241 from entering the air passage 231 side even if the heat insulating material 241 is sprayed from the indoor side.

また、折曲突出部１２１ａｃ，１２１ａｄは、折り曲げ前は起立部１１１ａの両端部から第１端縁部１０２ａに沿って延出しており、起立部１１１ａの基端縁部２５ａに対し鋭角をなす折り線３１ａｃ，３１ａｄで折り曲げられることになり、折曲突出部１２１ｂｃ，１２１ｂｄは、折り曲げ前は起立部１１１ｂの両端部から第１端縁部１０２ｂに沿って延出しており、起立部１１１ｂの基端縁部２５ｂに対し鋭角をなす折り線３１ｂｃ，３１ｂｄで折り曲げられることになる。このため、本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを容易に形成することができる。 Further, the bent protrusions 121ac and 121ad extend from both ends of the upright portion 111a along the first end edge portion 102a before bending, and are folded to form an acute angle with respect to the base end edge portion 25a of the upright portion 111a. It will be bent along the lines 31ac, 31ad, and the bent protrusions 121bc, 121bd extend from both ends of the upright portion 111b along the first end edge portion 102b before bending, and the base end of the upright portion 111b. It will be bent at the folding lines 31bc and 31bd forming an acute angle with respect to the edge portion 25b. Therefore, the bent protrusions 121ac, 121ad, 121bc, 121bd that protrude from the main body 101 in the direction opposite to the upright portions 111a and 111b can be easily formed.

また、本体部１０１が折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄよりも第１端縁部１０２ａ，１０２ｂの延在方向外側に突出する本体突出部１２５ｃ，１２５ｄを有することで、垂木２０３ａ，２０３ｂの延在方向に通気路形成用スペーサ１００を複数連設する際に、隣り合うもの同士の本体部１０１，１０１を重ね合わせることができる。よって、通気路２３１の室内側への連通を抑制することができる。 Further, the main body 101 has the main body protrusions 125c and 125d protruding outward in the extending direction of the first end edge portions 102a and 102b from the bent protrusions 121ac, 121ad, 121bc and 121b, so that the rafters 203a and 203b When a plurality of air passage forming spacers 100 are connected in a row in the extending direction, the main bodies 101 and 101 of adjacent objects can be overlapped with each other. Therefore, it is possible to suppress communication of the ventilation path 231 to the indoor side.

また、通気路形成用スペーサ１００は、複数が連設される際に、このように、一方の通気路形成用スペーサ１００の本体部１０１と他方の通気路形成用スペーサ１００の本体部１０１とを重ね合わせるため、本体部１０１の範囲のうち、起立部１１１ａ，１１１ｂとの境界部分を含む主体部１２６の範囲内に、切欠きや穴、スリット等、本体部１０１を板厚方向に貫通する部分が形成されていないことと合わせて、室内側から断熱材２４１を吹き付けても断熱材２４１が通気路２３１側に入り込むことを抑制することができる。 Further, when a plurality of the air passage forming spacers 100 are connected in series, the main body portion 101 of one air passage forming spacer 100 and the main body portion 101 of the other air passage forming spacer 100 are thus combined. In order to overlap, a portion of the main body 101 that penetrates the main body 101 in the plate thickness direction, such as a notch, a hole, or a slit, within the range of the main body 126 including the boundary portion with the upright portions 111a and 111b. In addition to the fact that the heat insulating material 241 is not formed, it is possible to prevent the heat insulating material 241 from entering the ventilation path 231 side even if the heat insulating material 241 is sprayed from the indoor side.

このような通気路形成用スペーサ１００を用いた屋根裏構造は、通気路形成用スペーサ１００が、一対の起立部１１１ａ，１１１ｂを一対の垂木２０３ａ，２０３ｂに沿って配置し、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを本体部１０１よりも室内側に突出させて、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄにおいて垂木２０３ａ，２０３ｂに取り付けられている。よって、通気路形成用スペーサ１００を垂木２０３ａ，２０３ｂの延在方向に複数連設して垂木２０３ａ，２０３ｂに取り付ける際の施工性を向上させることが可能となる。 In such an attic structure using the air passage forming spacer 100, the air passage forming spacer 100 arranges a pair of upright portions 111a and 111b along the pair of rafters 203a and 203b, and the bent protrusion 121ac, The 121ad, 121ad, 121bd are projected toward the room side from the main body 101, and are attached to the rafters 203a, 203b at the bent protrusions 121ac, 121ad, 121bc, 121bd. Therefore, it is possible to improve the workability when a plurality of air passage forming spacers 100 are continuously provided in the extending direction of the rafters 203a and 203b and attached to the rafters 203a and 203b.

また、通気路形成用スペーサ１００を用いた屋根裏構造は、通気路形成用スペーサ１００が、一対の起立部１１１ａ，１１１ｂを一対の垂木２０３ａ，２０３ｂに沿って配置し、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを本体部１０１よりも室内側に突出させて、折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄにおいて垂木２０３ａ，２０３ｂに取り付けられ、しかも、本体部１０１，１０１同士を重ね合わせて垂木２０３ａ，２０３ｂの延在方向に複数連設されているため、通気路２３１の室内側への連通を抑制することができる。 Further, in the attic structure using the air passage forming spacer 100, the air passage forming spacer 100 arranges a pair of upright portions 111a and 111b along the pair of rafters 203a and 203b, and the bent protrusions 121ac and 121ad. , 121bc, 121bd are projected toward the room side from the main body 101, and are attached to the rafters 203a, 203b at the bent protrusions 121ac, 121ad, 121bc, 121b, and the main bodies 101, 101 are overlapped with each other to be attached to the rafters. Since a plurality of 203a and 203b are connected in the extending direction, it is possible to suppress the communication of the ventilation passage 231 to the indoor side.

また、本体部１０１の室内側に断熱材２４１が吹き付けられることになるが、通気路形成用スペーサ１００が、本体部１０１から立ち上がる一対の起立部１１１ａ，１１１ｂの両端部から本体部１０１とは反対側に折り曲げられて本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを有するため、垂木２０３ａ，２０３ｂに取り付けられる折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを形成しても、本体部１０１の範囲内に起立部１１１ａ，１１１ｂとの境界部分を含んで、切欠きや穴、スリット等、本体部１０１を板厚方向に貫通する部分を形成する必要がなく、室内側から断熱材２４１を吹き付けても断熱材２４１が通気路２３１側に入り込むことを抑制することができる。 Further, the heat insulating material 241 is sprayed on the indoor side of the main body 101, but the spacer 100 for forming the air passage is opposite to the main body 101 from both ends of the pair of upright parts 111a and 111b rising from the main body 101. Since it has bent protrusions 121ac, 121ad, 121bc, 121bd that are bent sideways and project from the main body 101 in the direction opposite to the standing portions 111a, 111b, the bent protrusions 121ac, which are attached to the rafters 203a, 203b, Even if 121ad, 121bc, 121bd are formed, the portion that penetrates the main body 101 in the plate thickness direction, such as a notch, a hole, a slit, etc., including the boundary portion with the upright portions 111a, 111b within the range of the main body 101. It is not necessary to form the heat insulating material 241 and it is possible to prevent the heat insulating material 241 from entering the ventilation path 231 side even if the heat insulating material 241 is sprayed from the indoor side.

通気路形成用板材１０は、一方の第１辺部１１ａに近い両側のスリット１５ａｃ，１５ａｄを結んで延在する折り曲げ容易な一側の側部易折曲部２５ａと、他方の第１辺部１１ｂに近い両側のスリット１５ｂｃ，１５ｂｄを結んで延在する折り曲げ容易な他側の側部易折曲部２５ｂと、各スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄから、第１辺部１１ａ，１１ｂのうちのそれぞれ近い側に延びる折り曲げ容易な隅側易折曲部３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄとを有する。このため、一方の第１辺部１１ａに近い折り曲げ容易な一側の側部易折曲部２５ａを谷折りし、他方の第１辺部１１ｂに近い折り曲げ容易な他側の側部易折曲部２５ｂを谷折りし、各スリット１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄから鈍角をなしてそれぞれ第１辺部１１ａ，１１ｂのうち近い側の第１辺部に延びる折り曲げ容易な隅側易折曲部３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄを山折りすると、本体部１０１から立ち上がる一対の起立部１１１ａ，１１１ｂの両端部から本体部１０１とは反対側に折り曲げられて本体部１０１よりも起立部１１１ａ，１１１ｂとは反対方向に突出する折曲突出部１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄを有する通気路形成用スペーサ１００となる。よって、容易に通気路形成用スペーサ１００を形成することができる。 The ventilation path forming plate 10 has an easily bendable one side side easily bent portion 25a extending by connecting slits 15ac and 15ad on both sides close to one first side portion 11a, and the other first side portion. From the easily bendable side side easily bent portions 25b extending by connecting the slits 15bc and 15bd on both sides close to 11b and the slits 15ac, 15bc, 15ad and 15bd, among the first side portions 11a and 11b. It has easy-to-bend corner-side easy-folding portions 31ac, 31bc, 31ad, and 31bd extending to the respective sides close to each other. For this reason, one side easy-to-bend portion 25a close to one first side portion 11a is valley-folded, and the other side easy-to-bend side easy-to-bend portion close to the other first side portion 11b is easily folded. The portion 25b is valley-folded, and an blunt angle is formed from each of the slits 15ac, 15bc, 15ad, and 15bd to extend to the first side portion of the first side portions 11a and 11b, which is closer to the first side portion. , 31bc, 31ad, 31bd are folded from both ends of a pair of standing portions 111a, 111b rising from the main body 101 to the opposite side of the main body 101, and the standing portions 111a, 111b are bent from the main body 101. The spacer 100 for forming a ventilation path has bent protrusions 121ac, 121ad, 121bc, and 121db that protrude in the opposite direction. Therefore, the spacer 100 for forming an air passage can be easily formed.

また、通気路形成用板材１０は、一側の側部易折曲部２５ａおよび他側の側部易折曲部２５ｂは谷折り容易であり、各隅側折曲部は山折り容易３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄであるため、側部易折曲部２５ａ，２５ｂの谷折りが容易となり、各隅側易折曲部３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄの山折りが容易となる。よって、さらに容易に通気路形成用スペーサ１００を形成することができる。 Further, in the ventilation path forming plate material 10, the side easily bent portion 25a on one side and the side easily bent portion 25b on the other side are easily folded in a valley, and each corner side bent portion is easily folded in a mountain 31ac. Since it is 31bc, 31ad, 31bd, the valley folding of the side easy folding portions 25a, 25b becomes easy, and the mountain folding of each corner side easy bending portion 31ac, 31bc, 31ad, 31bd becomes easy. Therefore, the spacer 100 for forming a ventilation path can be formed more easily.

以上の実施形態においては、既設の通気路形成用スペーサ１００の本体部１０１の主体部１２６に、次設の通気路形成用スペーサ１００の例えば本体突出部１２５ｄを、既設の通気路形成用スペーサ１００の例えば本体突出部１２５ｃに、次設の通気路形成用スペーサ１００の主体部１２６を、それぞれ重ね合わせる場合を例にとり説明した。しかし、これに限らない。既設の通気路形成用スペーサ１００の例えば本体突出部１２５ｃに、次設の通気路形成用スペーサ１００の例えば本体突出部１２５ｄを重ね合わせても良い。また、既設の通気路形成用スペーサ１００の本体部１０１と次設の通気路形成用スペーサ１００の本体部１０１とを重ね合わせなくても良い。 In the above embodiment, the main body portion 126 of the main body portion 101 of the existing air passage forming spacer 100 is provided with, for example, the main body protruding portion 125d of the next air passage forming spacer 100, and the existing air passage forming spacer 100 is provided. For example, the case where the main body portion 126 of the next air passage forming spacer 100 is overlapped with the main body protruding portion 125c has been described as an example. However, it is not limited to this. For example, the main body protruding portion 125c of the existing air passage forming spacer 100 may be superposed on the main body protruding portion 125d of the next air passage forming spacer 100. Further, it is not necessary to superimpose the main body 101 of the existing air passage forming spacer 100 and the main body 101 of the next air passage forming spacer 100.

また、以上の実施形態においては、通気路形成用スペーサ１００の先端突出部１２２ａｃ，１２２ａｄをそれぞれ垂木２０３ａに針２２１で固定するととともに、先端突出部１２２ｂｃ，１２２ｂｄをそれぞれ垂木２０３ｂに針２２１で固定する場合を例にとり説明した。しかし、これに限らない。先設の通気路形成用スペーサ１００の次設の通気路形成用スペーサ１００とは反対側の例えば先端突出部１２２ａｄ，１２２ｂｄを垂木２０３ａ，２０３ｂに針２２１で固定する一方で先設の通気路形成用スペーサ１００の次設の通気路形成用スペーサ１００側の例えば先端突出部１２２ａｃ，１２２ｂｃを垂木２０３ａ，２０３ｂに針２２１で固定せず、先設の通気路形成用スペーサ１００の本体部１０１の下側に次設の通気路形成用スペーサ１００の本体部１０１を重ねつつ、次設の通気路形成用スペーサ１００の先設の通気路形成用スペーサ１００側の例えば先端突出部１２２ａｄ，１２２ｂｄを垂木２０３ａ，２０３ｂに針２２１で固定する。これにより、先設の通気路形成用スペーサ１００の本体部１０１の次設の通気路形成用スペーサ１００側を、次設の通気路形成用スペーサ１００の本体部１０１の先設の通気路形成用スペーサ１００側で支持することができる。 Further, in the above embodiment, the tip protrusions 122ac and 122ad of the air passage forming spacer 100 are fixed to the rafters 203a with needles 221 respectively, and the tip protrusions 122bc and 122db are fixed to the rafters 203b with needles 221 respectively. The case was explained as an example. However, it is not limited to this. For example, the tip protrusions 122ad and 122bd on the opposite side of the preceding air passage forming spacer 100 to the next air passage forming spacer 100 are fixed to the rafters 203a and 203b with a needle 221 while forming the preceding air passage. For example, the tip protrusions 122ac and 122bc on the side of the spacer 100 for forming the air passage next to the spacer 100 are not fixed to the rafters 203a and 203b with the needle 221 and under the main body 101 of the spacer 100 for forming the air passage. While superimposing the main body 101 of the next air passage forming spacer 100 on the side, for example, the tip protrusions 122ad and 122db on the front air passage forming spacer 100 side of the next air passage forming spacer 100 are rafters 203a. , 203b with a needle 221. As a result, the spacer 100 side for forming the next air passage of the main body 101 of the spacer 100 for forming the air passage in advance is used for forming the air passage in advance of the main body 101 of the spacer 100 for forming the air passage next. It can be supported on the spacer 100 side.

また、以上の実施形態においては、室内側から通気路形成用スペーサ１００を施工する場合を例にとり説明したが、例えば、野地板２０２の施工前に室外側から施工することも勿論可能である。このような場合、通気路形成用スペーサ１００を、起立部１１１ａ，１１１ｂが本体部１０１から室内側に突出し、先端突出部１２２ａｃ，１２２ｂｃ，１２２ａｄ，１２２ｂｄが本体部１０１から室外側に突出する向きで施工する。 Further, in the above embodiment, the case where the spacer 100 for forming a ventilation path is constructed from the indoor side has been described as an example, but for example, it is also possible to construct the spacer 100 from the outdoor side before the construction of the field board 202. In such a case, the air passage forming spacer 100 is oriented so that the upright portions 111a and 111b project from the main body 101 toward the indoor side and the tip protruding portions 122ac, 122bc, 122ad and 122bd project from the main body 101 to the outdoor side. To construct.

１０ 通気路形成用板材
１１ａ，１１ｂ 第１辺部
１１ｃ，１１ｄ 第２辺部
１５ａｃ，１５ｂｃ，１５ａｄ，１５ｂｄ スリット
２５ａ，２５ｂ 側部易折曲部
３１ａｃ，３１ｂｃ，３１ａｄ，３１ｂｄ 隅側易折曲部
１００ 通気路形成用スペーサ
１０１ 本体部
１０２ａ，１０２ｂ 第１端縁部
１７ｃ，１７ｄ 第２端縁部
１１１ａ，１１１ｂ 起立部
１２１ａｃ，１２１ａｄ，１２１ｂｃ，１２１ｂｄ 折曲突出部
１２５ｃ，１２５ｄ 本体突出部
２０３ａ，２０３ｂ 垂木
２３１ 通気路
２４１ 断熱材 10 Ventilation channel forming plate 11a, 11b 1st side 11c, 11d 2nd side 15ac, 15bc, 15ad, 15bd Slit 25a, 25b Side easy bending 31ac, 31bc, 31ad, 31b corner side easy bending 100 Spacer for forming a ventilation path 101 Main body 102a, 102b First end edge 17c, 17d Second end edge 111a, 111b Standing part 121ac, 121ad, 121bc, 121b Bent protrusion 125c, 125d Main body protrusion 203a, 203b Rafters 231 Ventilation channels 241 Insulation

Claims (8)

同方向に延在する一対の垂木間に設けられて屋根裏側に通気路を形成する通気路形成用スペーサであって、
同方向に延在する一対の第１端縁部および前記一対の第１端縁部に交差する一対の第２端縁部を有する本体部と、
前記一対の第１端縁部から立ち上がる一対の起立部と、
前記第１端縁部の延在方向における前記一対の起立部の両端部から、前記第２端縁部の延在方向における前記本体部とは反対側に折り曲げられて該本体部よりも前記起立部とは反対方向に突出する折曲突出部と、を有することを特徴とする通気路形成用スペーサ。 A spacer for forming an air passage, which is provided between a pair of rafters extending in the same direction and forms an air passage on the attic side.
A main body having a pair of first edge portions extending in the same direction and a pair of second edge portions intersecting the pair of first edge portions.
A pair of upright portions rising from the pair of first end edges,
The pair of standing portions are bent from both ends of the pair of standing portions in the extending direction of the first end edge portion to the opposite side of the main body portion in the extending direction of the second end edge portion, and the standing portion is higher than the main body portion. A spacer for forming a ventilation path, which comprises a bent protrusion that protrudes in the direction opposite to the portion. 前記折曲突出部は、折り曲げ前は前記起立部から前記第１端縁部に沿って延出しており、前記起立部の基端縁部に対し鋭角をなす折り線で折り曲げられていることを特徴とする請求項１に記載の通気路形成用スペーサ。 Before bending, the bent protrusion extends from the upright portion along the first end edge portion, and is bent at an acute angle with respect to the base end edge portion of the upright portion. The spacer for forming an air passage according to claim 1. 前記本体部は、前記折曲突出部よりも前記第１端縁部の延在方向外側に突出する本体突出部を有することを特徴とする請求項１または２に記載の通気路形成用スペーサ。 The spacer for forming a ventilation path according to claim 1 or 2, wherein the main body portion has a main body protrusion portion that protrudes outward in the extending direction of the first end edge portion from the bent protrusion portion. 請求項１から３のいずれか一項に記載の通気路形成用スペーサが、前記一対の起立部を前記一対の垂木に沿って配置し、前記折曲突出部を前記本体部よりも室内側に突出させて、前記折曲突出部において前記垂木に取り付けられていることを特徴とする屋根裏構造。 The spacer for forming a ventilation path according to any one of claims 1 to 3 arranges the pair of upright portions along the pair of rafters, and the bent protrusions are located closer to the room than the main body portion. An attic structure that is projected and attached to the rafters at the bent protrusion. 請求項３に記載の通気路形成用スペーサが、前記一対の起立部を前記一対の垂木に沿って配置し、前記折曲突出部を前記本体部よりも室内側に突出させて、前記折曲突出部において前記垂木に取り付けられるとともに、前記本体部同士を重ね合わせて前記垂木の延在方向に複数連設されていることを特徴とする屋根裏構造。 The spacer for forming a ventilation path according to claim 3 has the pair of upright portions arranged along the pair of rafters, and the bent protrusions are projected toward the room side from the main body portion, so that the bent portion is bent. An attic structure characterized in that a projecting portion is attached to the rafters and a plurality of main body portions are overlapped with each other in the extending direction of the rafters. 前記本体部の室内側に断熱材が吹き付けられていることを特徴とする請求項４または５に記載の屋根裏構造。 The attic structure according to claim 4 or 5, wherein a heat insulating material is sprayed on the indoor side of the main body portion. 同方向に延在する一対の垂木間に設けられて屋根裏側に通気路を形成する通気路形成用スペーサとなる通気路形成用板材であって、
同方向に延在する一対の第１辺部と、
前記一対の第１辺部に交差する一対の第２辺部とを有し、
前記一対の第２辺部から前記一対の第１辺部に沿って延びるスリットが四隅に形成されており、
一方の前記第１辺部に近い両側の前記スリットを結んで延在する折り曲げ容易な一側の側部易折曲部と、
他方の前記第１辺部に近い両側の前記スリットを結んで延在する折り曲げ容易な他側の側部易折曲部と、
各前記スリットから、鈍角をなしてそれぞれ近い側の前記第１辺部に延びる折り曲げ容易な隅側易折曲部と、を有することを特徴とする通気路形成用板材。 It is a plate material for forming an air passage, which is provided between a pair of rafters extending in the same direction and serves as a spacer for forming an air passage on the attic side.
A pair of first sides extending in the same direction,
It has a pair of second side portions that intersect the pair of first side portions, and has a pair of second side portions.
Slits extending from the pair of second sides along the pair of first sides are formed at the four corners.
An easily bendable side portion that extends by connecting the slits on both sides close to the first side portion, and an easily bendable portion on one side.
An easily bendable side portion that is easily bent and extends by connecting the slits on both sides close to the first side portion of the other side.
A plate material for forming a ventilation path, characterized by having an obtuse-angled corner-side easily bent portion extending from each of the slits to the first side portion on the closer side. 前記一側の側部易折曲部および前記他側の側部易折曲部は谷折り容易であり、各前記隅側易折曲部は山折り容易であることを特徴とする請求項７に記載の通気路形成用板材。 7. The aspect 7 is characterized in that the side easy-folding portion on one side and the side easy-folding portion on the other side are easy to fold in a valley, and each corner-side easy-folding portion is easy to fold in a mountain. The plate material for forming a ventilation path described in.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3156279U (en) 2009-09-24 2009-12-24 株式会社金杉屋 Thermal insulation ventilation sheet used for thermal insulation ventilation spacer
JP5058241B2 (en) 2009-12-10 2012-10-24 株式会社ジェイエスピー Spacer for forming air passage and mounting structure of the spacer
JP5477990B1 (en) 2013-10-16 2014-04-23 株式会社日本アクア Ventilation spacer and heat insulation method using the ventilation spacer

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US4292777A (en) * 1978-10-10 1981-10-06 Story Edward R Insulation-confining panel and method of using the same
JP3726838B2 (en) * 2004-10-28 2005-12-14 井関農機株式会社 Fertilizer applicator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3156279U (en) 2009-09-24 2009-12-24 株式会社金杉屋 Thermal insulation ventilation sheet used for thermal insulation ventilation spacer
JP5058241B2 (en) 2009-12-10 2012-10-24 株式会社ジェイエスピー Spacer for forming air passage and mounting structure of the spacer
JP5477990B1 (en) 2013-10-16 2014-04-23 株式会社日本アクア Ventilation spacer and heat insulation method using the ventilation spacer

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