JP2023042260A - Exterior wall mounting hardware, exterior wall mounting structure, and construction method of exterior wall mounting structure - Google Patents

Abstract

To provide an exterior wall mounting hardware, an exterior wall mounting structure, and a construction method of the exterior wall mounting structure that enable one-person work and improve workability.SOLUTION: An exterior wall mounting hardware 1 is an exterior wall mounting hardware 1 for fixing an exterior wall material 4 formed in an L-shaped cross section having a vertical portion 40 and a horizontal portion 41 to a beam 3 having a horizontal flat lower flange portion 30 at least at its lower end, which comprises: a vertical flat first plate portion 10 fixed to an interior side surface of the vertical portion 40 of the exterior wall material 4; a second plate portion 11 extending horizontally from the lower end of the first plate portion 10 and fixed in contact with the lower surface of the lower flange portion 30; and a fastening arm portion 12 extending horizontally from the first plate portion 10 and abutting the upper surface of the lower flange portion 30.SELECTED DRAWING: Figure 3

Description

本発明は、梁に断面Ｌ字に形成された外壁材を固定する外壁取付金物、当該外壁取付金物を用いた外壁取付構造、及び当該外壁取付構造の施工方法に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior wall mounting hardware for fixing an exterior wall material having an L-shaped cross section to a beam, an exterior wall mounting structure using the exterior wall mounting hardware, and a construction method for the exterior wall mounting structure.

従来より、外壁材に固定したアングル状の外壁取付金具を梁や柱などの建物の躯体に固定して、外壁材を建物躯体に取り付ける外壁取付構造が知られている（特許文献１から特許文献３参照）。このような外壁取付構造は、具体的には例えば、外壁材の裏面に形成された枠状又はレール状の鋼材に外壁取付金具の一方の取付面を当接させてボルト及びナットで固定するとともに、建物の躯体に水平板状に形成された取付部に、外壁取付金具の他方の取付面を当接させてボルト及びナットで固定する。 Conventionally, there has been known an exterior wall mounting structure in which an angle-shaped exterior wall mounting bracket fixed to an exterior wall material is fixed to a building frame such as a beam or a pillar, and the exterior wall material is attached to the building frame (Patent Document 1 to Patent Document 3). Specifically, in such an exterior wall mounting structure, for example, one mounting surface of the exterior wall mounting bracket is brought into contact with a frame-shaped or rail-shaped steel material formed on the back surface of the exterior wall material, and fixed with bolts and nuts. The other mounting surface of the exterior wall mounting bracket is brought into contact with the mounting portion formed in the shape of a horizontal plate on the frame of the building and fixed with bolts and nuts.

このような外壁取付構造の中には、例えば特許文献１に記載されているように、外壁取付金具の一方の取付面にはボルトを挿入する鉛直な長孔が形成され、外壁取付金具の他方の取付面にはボルトを挿入する水平な長孔が形成されることで、外壁材の不陸やレベルの調整を行うことができるものもある。 In such an exterior wall mounting structure, for example, as described in Patent Document 1, a vertical elongated hole for inserting a bolt is formed in one mounting surface of the exterior wall mounting bracket, and the other mounting surface of the exterior wall mounting bracket In some cases, horizontal long holes for inserting bolts are formed on the mounting surface of the wall, allowing adjustment of the unevenness and level of the outer wall material.

特開平５－３１１８４７号公報JP-A-5-311847 特開平６－１８５１４９号公報JP-A-6-185149 特開平１０－１６９０５８号公報JP-A-10-169058

このような外壁取付構造を施工する際には、外壁材を所望の位置に保持しつつ、ボルト及びナットを締め付ける作業が必要であり、少なくとも外壁材を保持する者と、ボルト及びナットを締め付ける者の２人以上の作業者が必要となる。また、不陸やレベルを調整する際にも同様に外壁を保持する者と、ボルト及びナットを緩める作業や再度締め付ける作業に２人以上の作業者が必要となる。 When constructing such an exterior wall mounting structure, it is necessary to tighten the bolts and nuts while holding the exterior wall material in a desired position. 2 or more workers are required. Also, when adjusting unevenness and level, similarly, a person holding the outer wall and two or more workers are required for the work of loosening and tightening the bolts and nuts.

本発明は、１人作業を可能とし作業性を高めることができる外壁取付金具、外壁取付構造、及び外壁取付構造の施工方法を提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide an exterior wall mounting bracket, an exterior wall mounting structure, and a method of constructing the exterior wall mounting structure, which enable single-person work and improve workability.

本発明の外壁取付金具は、鉛直部と水平部とを有する断面Ｌ字に形成された外壁材を、少なくとも下端に水平な平板状の下フランジ部を有する梁に固定する外壁取付金物であって、外壁材の鉛直部の屋内側の面に固定される鉛直な平板状の第一板部と、前記第一板部の下端から水平に延び、前記フランジ部の下面に当接して固定される第二板部と、前記第一板部から水平に延び、前記下フランジ部の上面に当接する係止腕部と、を備えることを特徴としている。 The exterior wall mounting bracket of the present invention is an exterior wall mounting bracket for fixing an exterior wall material having an L-shaped cross section having a vertical portion and a horizontal portion to a beam having at least a horizontal flat plate-shaped lower flange portion at the lower end thereof. a vertical flat plate-shaped first plate portion fixed to the indoor side surface of the vertical portion of the exterior wall material; It is characterized by comprising a second plate portion and a locking arm portion extending horizontally from the first plate portion and in contact with the upper surface of the lower flange portion.

本発明の外壁取付構造は、下端に下フランジ部が設けられる梁と、鉛直部と水平部とを有するＬ字に形成され、前記鉛直部の裏面に沿って水平方向にＣ形鋼の溝部が形成された外壁材と、上記の外壁取付金具と、を備えることを特徴としている。 The exterior wall mounting structure of the present invention is formed in an L shape having a beam with a lower flange portion at its lower end, a vertical portion and a horizontal portion, and a groove portion of C-shaped steel extending horizontally along the back surface of the vertical portion. It is characterized by comprising the formed outer wall material and the above-described outer wall mounting bracket.

本発明の外壁取付構造は、前記溝部内に収納され、ネジ孔を有する取付プレートと、前記第一板部に形成される取付孔に挿入されるとともに、前記ネジ孔に螺着して、前記外壁材に前記外壁取付金具を取り付ける取付ボルトと、をさらに備え、前記取付孔は鉛直方向に長い長孔であることを特徴としている。 The outer wall mounting structure of the present invention is accommodated in the groove portion, is inserted into a mounting plate having a screw hole, and is inserted into the mounting hole formed in the first plate portion, and is screwed into the screw hole to A mounting bolt for mounting the outer wall mounting bracket to the outer wall material is further provided, and the mounting hole is an elongated hole elongated in the vertical direction.

本発明の外壁取付構造は、前記取付ボルトは、極低頭ボルトであることを特徴としている。 The exterior wall mounting structure of the present invention is characterized in that the mounting bolt is a very low head bolt.

本発明の外壁取付構造は、前記梁の下フランジ部に固定ボルトが挿入される固定孔が形成されるとともに、前記第二板部に、前記固定ボルトが挿入される挿入孔が形成されており、前記挿入孔は、前記第二板部の延出方向に長い長孔であることを特徴としている。 In the exterior wall mounting structure of the present invention, a fixing hole into which a fixing bolt is inserted is formed in the lower flange portion of the beam, and an insertion hole into which the fixing bolt is inserted is formed in the second plate portion. , wherein the insertion hole is an elongated hole elongated in the extending direction of the second plate portion.

本発明の外壁取付構造は、前記固定ボルトは、下方から前記挿入孔及び前記固定孔に挿入されて、前記下フランジ部の上側でナットが締結されることを特徴としている。 The outer wall attachment structure of the present invention is characterized in that the fixing bolt is inserted into the insertion hole and the fixing hole from below, and a nut is fastened on the upper side of the lower flange portion.

本発明の外壁取付構造は、前記外壁材の水平部は、上側に前記下フランジ部の一部が重なるように前記鉛直部の下端から突出して形成されており、前記固定孔は、前記水平部が重ならない位置の前記下フランジ部に形成されており、前記第二板部は、前記下フランジ部よりも水平方向に延びて、前記固定孔と重なる位置に挿入孔が形成されることを特徴としている。 In the exterior wall mounting structure of the present invention, the horizontal portion of the exterior wall material is formed so as to project from the lower end of the vertical portion so that a portion of the lower flange portion overlaps on the upper side, and the fixing hole is formed in the horizontal portion. is formed in the lower flange portion at a position where the second plate portion does not overlap, and the second plate portion extends in the horizontal direction from the lower flange portion, and an insertion hole is formed at a position overlapping the fixing hole. and

本発明の外壁取付構造は、前記梁は、Ｈ形鋼の下面に上下逆向きのＴ字に形成された形鋼を固定して形成される補強梁であることを特徴としている。 The exterior wall attachment structure of the present invention is characterized in that the beam is a reinforcing beam formed by fixing a T-shaped steel upside down to the lower surface of an H-shaped steel.

本発明の外壁取付構造の施工方法は、上記のいずれかの外壁取付構造の施工方法であって、前記外壁材の鉛直部の屋内側の面に前記外壁取付金具の第一板部を取り付ける工程と、前記外壁材が取り付けられた前記外壁取付金具の前記係止腕部と前記第二板部とで、前記梁の前記下フランジ部を挟み込んで保持する工程と、前記下フランジ部と前記第二板部とを固定する工程と、を備えることを特徴としている。 A method for constructing an exterior wall mounting structure according to the present invention is any one of the construction methods for an exterior wall mounting structure described above, wherein the first plate portion of the exterior wall mounting bracket is attached to the indoor side surface of the vertical portion of the exterior wall material. and holding the lower flange portion of the beam by sandwiching it between the locking arm portion and the second plate portion of the outer wall mounting bracket to which the outer wall material is attached; and a step of fixing the second plate portion.

本発明の外壁取付金具によると、断面Ｌ字の外壁材の鉛直部の屋内側の面に第一板部が固定された状態で、梁の下フランジ部の上面に係止腕部が当接し、当該下フランジ部の下面に第二板部が当接するので、下フランジ部を係止腕部と第二板部とで挟み込んで保持することができる。したがって、外壁材が第一板部に固定された状態で、外壁取付金具を下フランジ部に仮置きすることができ、外壁材を固定すべき位置に持ち上げながら、第二板部と下フランジ部とを固定する必要がないので、外壁材を梁に取り付ける作業を一人で行うことができる。また第二板部と下フランジ部とを固定する前に仮置きするので、外壁材の位置を調整する作業を容易なものとすることができる。 According to the exterior wall mounting bracket of the present invention, in a state in which the first plate portion is fixed to the indoor surface of the vertical portion of the exterior wall material having an L-shaped cross section, the locking arm portion abuts on the upper surface of the lower flange portion of the beam. Since the second plate portion contacts the lower surface of the lower flange portion, the lower flange portion can be sandwiched and held between the locking arm portion and the second plate portion. Therefore, in a state where the exterior wall material is fixed to the first plate portion, the exterior wall mounting bracket can be temporarily placed on the lower flange portion. Since there is no need to fix the beams, the work of attaching the exterior wall materials to the beams can be done by one person. Moreover, since the second plate portion and the lower flange portion are temporarily placed before being fixed, the work of adjusting the position of the exterior wall material can be facilitated.

本発明の外壁取付構造によると、下端に下フランジ部が設けられる梁と、鉛直部と水平部とを有するＬ字に形成され、鉛直部の裏面に沿って水平方向にＣ形鋼の溝部が形成された外壁材と、上記の外壁取付金具と、を備えるので、外壁材が第一板部に固定された状態で、下フランジ部を係止腕部と第二板部とで挟みこむことで、外壁取付金具を下フランジ部に仮置きすることができ、外壁材を梁に取り付ける作業を安全に一人で行うことができる。また仮置きすることで、外壁材の位置を調整する作業を容易なものとすることができる。 According to the exterior wall mounting structure of the present invention, the beam is formed in an L shape having a lower flange portion at the lower end, a vertical portion and a horizontal portion, and a C-shaped steel groove extends horizontally along the back surface of the vertical portion. Since the formed outer wall material and the outer wall mounting bracket are provided, the lower flange portion can be sandwiched between the locking arm portion and the second plate portion while the outer wall member is fixed to the first plate portion. Therefore, the external wall mounting bracket can be temporarily placed on the lower flange portion, and the work of mounting the external wall material to the beam can be safely performed by one person. Temporary placement also facilitates the work of adjusting the position of the exterior wall material.

本発明の外壁取付構造によると、外壁材の鉛直部の裏面に形成される溝部内に取付プレートが収納され、外壁取付金具の第一板部に形成される取付孔に挿入される取付ボルトが取付プレートのネジ孔に螺着して、外壁材に外壁取付金具が固定されており、取付ボルトが挿入される取付孔が鉛直方向に長い長孔であるので、外壁材の外壁取付金具に対する位置を上下に調整することができ、梁に取り付けられた外壁材の上下方向の位置を調整することができる。 According to the exterior wall mounting structure of the present invention, the mounting plate is accommodated in the groove formed in the back surface of the vertical portion of the exterior wall material, and the mounting bolts are inserted into the mounting holes formed in the first plate portion of the exterior wall mounting bracket. The outer wall mounting bracket is fixed to the outer wall material by screwing it into the screw hole of the mounting plate. can be adjusted vertically, and the vertical position of the exterior wall material attached to the beam can be adjusted.

本発明の外壁取付構造によると、前述の通り取付孔が鉛直方向に長い長孔であることから取付ボルトは取付孔の範囲で外壁取付金具に対する位置を上下に移動可能となっており、取付ボルトのボルト頭が梁等と干渉する可能性が生じるが、取付ボルトが極低頭ボルトであるので当該干渉を抑制することができる。 According to the exterior wall mounting structure of the present invention, as described above, since the mounting hole is an elongated hole that is long in the vertical direction, the mounting bolt can move up and down within the range of the mounting hole with respect to the exterior wall mounting bracket. Although there is a possibility that the bolt head of the bolt interferes with the beam or the like, the interference can be suppressed because the mounting bolt is a very low head bolt.

本発明の外壁取付構造によると、梁の下フランジ部に形成される固定孔と、外壁取付金具の第二板部に形成される挿入孔とに、固定ボルトを挿入することで、梁と外壁取付金具とが固定されるものであり、挿入孔は第二板部の延出方向に長い長孔であるので、梁に対して、外壁取付金具及び当該外壁取付金具に固定されている外壁材を移動させることができ、外壁材の不陸を調整することができる。 According to the exterior wall attachment structure of the present invention, the beam and the exterior wall are fixed by inserting the fixing bolts into the fixing holes formed in the lower flange portion of the beam and the insertion holes formed in the second plate portion of the exterior wall attachment bracket. Since the insertion hole is an elongated hole in the extension direction of the second plate portion, the exterior wall mounting bracket and the exterior wall material fixed to the exterior wall mounting bracket are attached to the beam. can be moved, and the unevenness of the exterior wall material can be adjusted.

本発明の外壁取付構造によると、固定ボルトは、下方から挿入孔及び固定孔に挿入されて、下フランジ部の上側でナットが締結されるものであるので、固定ボルトの下方にはボルト頭のみが形成されることとなるので、固定ボルトが大きく下方に突出することがなく、外壁材の水平部や軒裏の野縁等の部材が固定ボルトと干渉することを抑制できる。 According to the exterior wall mounting structure of the present invention, the fixing bolt is inserted into the insertion hole and the fixing hole from below, and the nut is fastened above the lower flange portion, so only the bolt head is below the fixing bolt. is formed, the fixing bolt does not protrude greatly downward, and members such as the horizontal portion of the exterior wall material and the roof joists of the eaves can be prevented from interfering with the fixing bolt.

本発明の外壁取付構造によると、外壁材の水平部は、上側に下フランジ部の一部が重なるように鉛直部の下端から突出して形成されており、下フランジ部に形成される固定孔は、水平部が重ならない位置に形成されており、第二板部は下フランジ部よりも水平方向に延びて、固定孔と重なる位置に挿入孔が形成されているので、固定ボルトを挿入して、外壁材が固定された外壁取付金具と梁とを固定する際に、外壁材の水平部が邪魔になることがないので、梁への固定作業を比較的簡単なものとすることができる。 According to the exterior wall mounting structure of the present invention, the horizontal portion of the exterior wall material is formed so as to project from the lower end of the vertical portion so that a portion of the lower flange portion overlaps on the upper side, and the fixing hole formed in the lower flange portion is , the horizontal portion is formed at a position where it does not overlap, and the second plate portion extends in the horizontal direction from the lower flange portion, and an insertion hole is formed at a position overlapping the fixing hole, so that the fixing bolt can be inserted. Since the horizontal part of the exterior wall material does not interfere when the exterior wall mounting bracket to which the exterior wall material is fixed is fixed to the beam, the work of fixing the exterior wall material to the beam can be made relatively simple.

本発明の外壁取付構造によると、梁は、Ｈ形鋼の下面に上下逆向きのＴ字に形成された形鋼を固定して形成される補強梁であるので、単なるＨ形鋼の梁の場合に比べて作業者が腕や工具等を挿入するスペースが小さいが、仮置きして下方から固定する構成であるので比較的容易に外壁材を工程する作業を行うことができる。 According to the exterior wall attachment structure of the present invention, the beam is a reinforcing beam formed by fixing the T-shaped steel upside down to the lower surface of the H-shaped steel. Although the space for the operator to insert his/her arms and tools is small compared to the case, the structure is such that it is temporarily placed and fixed from below, so that the external wall material can be processed relatively easily.

本発明の外壁取付構造の施工方法によると、外壁材の鉛直部の屋内側の面に外壁取付金具の第一板部を取り付ける工程と、外壁材が取り付けられた外壁取付金具の係止腕部と第二板部とで、梁の下フランジ部を挟み込んで保持する工程と、下フランジ部と前記第二板部とを固定する工程と、を備えるので、作業者が一人で比較的容易に外壁取付構造の施工作業を行うことができる。 According to the construction method of the exterior wall mounting structure of the present invention, the step of attaching the first plate portion of the exterior wall mounting bracket to the indoor side surface of the vertical portion of the exterior wall material; and the second plate portion sandwiching and holding the lower flange portion of the beam, and the step of fixing the lower flange portion and the second plate portion. The construction work of the external wall attachment structure can be performed.

外壁取付金具の全体構造を示す斜視図。The perspective view which shows the whole structure of an outer wall attachment metal fitting. 外壁取付金具の全体構造を示す別の角度から見た斜視図。The perspective view seen from another angle which shows the whole structure of an outer wall attachment metal fitting. 外壁取付構造の全体構成を示す断面図Cross-sectional view showing the overall configuration of the exterior wall mounting structure 外壁材に外壁取付金具を取り付ける工程を示す図。The figure which shows the process which attaches an exterior wall mounting bracket to an exterior wall material. 外壁材の外壁取付金具に対する高さ方向の位置を調整する工程を示す図。FIG. 7 is a diagram showing a process of adjusting the height direction position of the outer wall material with respect to the outer wall mounting bracket; 外壁取付金具を取り付けた外壁材を梁の下フランジ部に仮置きする工程を示す図。The figure which shows the process of temporarily placing the external wall material which attached the external wall mounting metal fittings on the lower flange part of a beam. 外壁材の不陸調整を行う状態を説明する図。The figure explaining the state which performs unevenness adjustment of an exterior wall material. 野縁及び軒裏板材を取り付ける状態を示す図。The figure which shows the state which attaches a joist and an eaves board material.

以下、本発明に係る外壁取付金具１、外壁取付構造２、及び外壁取付構造の施工方法について各図を参照しつつ説明する。本実施形態の外壁取付構造２が配置される建物は、例えば鉄骨造の住宅である。本発明における外壁取付構造２が設けられる建物は住宅に限定されるものではなく、居住性・非居住性を問わず様々な施設に用いることができる。本実施形態における外壁取付構造２は、図示しない開口部の屋外側の上縁に形成されるまぐさ部に配置される梁３に外壁取付金具１を介して外壁材４を固定する構造である。 An exterior wall mounting bracket 1, an exterior wall mounting structure 2, and an exterior wall mounting structure construction method according to the present invention will be described below with reference to the drawings. The building in which the exterior wall attachment structure 2 of the present embodiment is arranged is, for example, a steel-framed house. The building provided with the exterior wall mounting structure 2 according to the present invention is not limited to a house, and can be used for various facilities regardless of whether they are habitable or not. The exterior wall mounting structure 2 in this embodiment is a structure in which an exterior wall material 4 is fixed via an exterior wall mounting bracket 1 to a beam 3 arranged in a lintel formed on the upper edge of an opening (not shown) on the outdoor side. .

梁３は、図３に示すように、上下のフランジをウェブで繋いで形成されているＨ形鋼の下面に上下逆向きのＴ字に形成された形鋼が固定され、平行に上下３段のフランジが幅方向の中央に設けられたウェブによって繋がって形成された形状の補強梁である。梁３の３段のフランジのうち、最も下側の下フランジ部３０に外壁取付金具１は固定される。本発明の外壁取付構造２における梁３の形状は、上述の補強梁に限定されるものではないが、少なくとも梁３の最下端には下フランジ部３０が形成されている。 As shown in Fig. 3, the beam 3 is formed by connecting the upper and lower flanges with a web, and the lower surface of the H-shaped steel is fixed to the lower surface of the H-shaped steel. It is a reinforcing beam of a shape formed by connecting the flanges of the two with a web provided in the center in the width direction. The outer wall mounting bracket 1 is fixed to the lower flange portion 30 on the lowest side among the three-tiered flanges of the beam 3 . The shape of the beam 3 in the exterior wall attachment structure 2 of the present invention is not limited to the reinforcing beam described above, but at least the beam 3 has a lower flange portion 30 formed at its lowermost end.

外壁材４は、鉛直部４０と鉛直部４０の下端から屋内側に延びる水平部４１とを有する断面Ｌ字に形成された例えばコンクリート製の板材である。外壁材４の鉛直部４０の裏面には水平方向に延びるＣ形鋼が埋設されて溝部４２を形成している。外壁材４の鉛直部４０の屋外側の面には、図示しないが凹凸模様が形成されている。 The exterior wall material 4 is a plate member made of, for example, concrete and having an L-shaped cross section, which has a vertical portion 40 and a horizontal portion 41 extending from the lower end of the vertical portion 40 toward the indoor side. C-shaped steel extending in the horizontal direction is embedded in the back surface of the vertical portion 40 of the outer wall material 4 to form a groove portion 42 . An uneven pattern (not shown) is formed on the outdoor surface of the vertical portion 40 of the exterior wall material 4 .

外壁取付金具１は、図１から図３に示すように、鋼板を折り曲げて形成されるものであって、鉛直に形成された平板状の第一板部１０と、第一板部１０の下端から水平に折り曲げて延びる第二板部１１と、第一板部１０の左右の側端からそれぞれ水平に折り曲げて延びる２つの係止腕部１２と、を備える。第一板部１０は、外壁材４の鉛直部４０の屋内側の面に固定される矩形の平板状である。第一板部１０には、外壁取付金具１を外壁材４の溝部４２に固定するための取付孔１３が形成されている。取付孔１３は、第一板部１０の幅方向の中心線に沿って形成される鉛直方向に長い長孔である。取付孔１３は取付ボルト１４のネジ部を挿入可能であるとともに、取付ボルト１４の頭部が挿入不能となっている。取付プレート１５は、平板上に形成され、中央に取付ボルト１４のネジ部が螺着可能なネジ孔１６を有している。取付ボルト１４は極低頭ボルトである。極低頭ボルトの頭部の高さは、例えば１．５ｍｍ以下であり、外壁材４及び外壁取付金具１の必要な接合強度を備える範囲で、より低いほうが好ましい。 As shown in FIGS. 1 to 3, the exterior wall mounting bracket 1 is formed by bending a steel plate, and includes a vertically formed flat first plate portion 10 and a lower end of the first plate portion 10. and two locking arm portions 12 extending horizontally by bending from the left and right side ends of the first plate portion 10, respectively. The first plate portion 10 has a rectangular flat plate shape fixed to the indoor side surface of the vertical portion 40 of the exterior wall material 4 . The first plate portion 10 is formed with a mounting hole 13 for fixing the external wall mounting bracket 1 to the groove portion 42 of the external wall material 4 . The mounting hole 13 is a vertically elongated hole formed along the widthwise center line of the first plate portion 10 . The threaded portion of the mounting bolt 14 can be inserted into the mounting hole 13, and the head portion of the mounting bolt 14 cannot be inserted. The mounting plate 15 is formed in the shape of a flat plate and has a screw hole 16 in the center into which the threaded portion of the mounting bolt 14 can be screwed. The mounting bolt 14 is a very low head bolt. The height of the head of the ultra-low head bolt is, for example, 1.5 mm or less, and is preferably as low as possible within the range where the necessary joint strength between the exterior wall material 4 and the exterior wall mounting bracket 1 is provided.

第二板部１１は、第一板部１０の下端から水平に延びて、梁３の下フランジ部３０の下面に当接し、固定される。第二板部１１の第一板部１０の下端からの延出長さは、梁３の下フランジ部３０の幅よりも僅かに長く、第二板部１１は下フランジ部３０の外壁材４から離反する端縁にまで延びている。第二板部１１は、外壁材４の水平部４１の突出長さよりも長く屋内側に延出しており、第二板部１１の先端は外壁の水平部４１から突き出すように形成されている。第二板部１１は、固定ボルト１７をを挿入可能な挿入孔１８が形成されており、固定ボルト１７は下から挿入孔１８に挿入され、さらに、梁３の下フランジ部３０に形成された固定孔１９に挿入されてナット２０を締め付けることで、下フランジ部３０に第二板部１１を固定する。固定孔１９は下フランジ部３０の外壁材４から離反する位置に形成されており、挿入孔１８は、第二板部１１の固定孔１９と重なる位置に形成されている。挿入孔１８が形成される位置は、第二板部１１が外壁材４の水平部４１から突き出した位置であり、外壁材４の水平部４１が邪魔になることなく、下フランジ部３０に外壁取付金具１を固定することができる。梁３の下フランジ部３０に形成された固定孔１９は、固定ボルト１７のネジ部の呼び径よりも僅かに大きい貫通孔であり、第二板部１１に形成された挿入孔１８は、第二板部１１の延出方向に長い長孔である。挿入孔１８が長孔であることで、挿入孔１８に固定ボルト１７を挿入した状態で外壁取付金具１を挿入孔１８の長さ方向に沿って移動させることができ、外壁材４の鉛直部４０の不陸を調整することができる。 The second plate portion 11 horizontally extends from the lower end of the first plate portion 10 and contacts and is fixed to the lower surface of the lower flange portion 30 of the beam 3 . The extension length of the second plate portion 11 from the lower end of the first plate portion 10 is slightly longer than the width of the lower flange portion 30 of the beam 3, and the second plate portion 11 is the outer wall material 4 of the lower flange portion 30. to an edge away from the The second plate portion 11 extends indoors longer than the horizontal portion 41 of the outer wall material 4, and the tip of the second plate portion 11 is formed to protrude from the horizontal portion 41 of the outer wall. The second plate portion 11 is formed with an insertion hole 18 into which a fixing bolt 17 can be inserted. The second plate portion 11 is fixed to the lower flange portion 30 by being inserted into the fixing hole 19 and tightening the nut 20 . The fixing hole 19 is formed in the lower flange portion 30 at a position separated from the outer wall material 4 , and the insertion hole 18 is formed at a position overlapping the fixing hole 19 of the second plate portion 11 . The position where the insertion hole 18 is formed is the position where the second plate portion 11 protrudes from the horizontal portion 41 of the outer wall member 4, and the outer wall is attached to the lower flange portion 30 without the horizontal portion 41 of the outer wall member 4 becoming an obstacle. The mounting bracket 1 can be fixed. The fixing hole 19 formed in the lower flange portion 30 of the beam 3 is a through hole slightly larger than the nominal diameter of the screw portion of the fixing bolt 17, and the insertion hole 18 formed in the second plate portion 11 It is an elongated hole elongated in the extending direction of the second plate portion 11 . Since the insertion hole 18 is an elongated hole, the outer wall mounting bracket 1 can be moved along the length direction of the insertion hole 18 with the fixing bolt 17 inserted in the insertion hole 18, and the vertical portion of the outer wall member 4 can be moved. 40 irregularities can be adjusted.

係止腕部１２は、第一板部１０の両側縁からそれぞれ第二板部１１の上方に水平に延びて形成されている。係止腕部１２は第二板部１１と平行であり、第二板部１１との間に下フランジ部３０の厚さと略等しい間隙を形成している。梁３を外壁取付金具１の係止腕部１２及び第二板部１１で挟んで配置することで、外壁取付金具１は梁３に仮置きすることができ、外壁取付金具１に固定されている外壁材４も仮に配置することができる。このように、外壁材４を第一板部１０に固定して、外壁取付金具１を下フランジ部３０に仮置きすることで、外壁材４を固定すべき位置に持ち上げる作業を行った後に、固定ボルト１７で第二板部１１と下フランジ部３０とを固定する作業を行うことができ、外壁材４を梁３に取り付ける作業を一人で行うことができる。また第二板部１１と下フランジ部３０とを固定する前に仮置きするので、外壁材４の位置を調整する作業を容易なものとすることができる。 The locking arm portions 12 are formed so as to extend horizontally above the second plate portion 11 from both side edges of the first plate portion 10 . The locking arm portion 12 is parallel to the second plate portion 11 and forms a gap substantially equal to the thickness of the lower flange portion 30 between the locking arm portion 12 and the second plate portion 11 . By arranging the beam 3 sandwiched between the locking arm portion 12 and the second plate portion 11 of the exterior wall mounting bracket 1, the exterior wall mounting bracket 1 can be temporarily placed on the beam 3 and fixed to the exterior wall mounting bracket 1. The external wall material 4 can also be provisionally arranged. In this way, by fixing the exterior wall material 4 to the first plate portion 10 and temporarily placing the exterior wall mounting bracket 1 on the lower flange portion 30, the exterior wall material 4 is lifted to the position where it should be fixed. The work of fixing the second plate portion 11 and the lower flange portion 30 with the fixing bolts 17 can be performed, and the work of attaching the exterior wall material 4 to the beam 3 can be performed by one person. Further, since the second plate portion 11 and the lower flange portion 30 are temporarily placed before being fixed, the work of adjusting the position of the outer wall member 4 can be facilitated.

外壁材４の鉛直部４０の上側には、図３に示すように、建物の躯体に固定される上部外壁材５が外壁材４の上端から目地幅を開けて配置されており、バックアップ材２１及び目地材２２が充填されて水平目地を形成している。また、外壁材４の水平部４１の屋内側には、野縁２３が設けられ、軒裏板材２４が敷設されている。軒裏板材２４の端縁と外壁材４の水平部４１との間には、隙間が形成されており、軒裏見切材２５が設けられている。 Above the vertical portion 40 of the exterior wall material 4, as shown in FIG. and a joint material 22 is filled to form a horizontal joint. In addition, on the indoor side of the horizontal portion 41 of the exterior wall material 4, a ceiling joist 23 is provided and an eaves board material 24 is laid. A gap is formed between the edge of the eaves plate material 24 and the horizontal part 41 of the exterior wall material 4, and an eaves clearance member 25 is provided.

以上のような外壁取付構造を施工する外壁取付構造の施工方法は、まず、図４に示すように、外壁材４に外壁取付金具１を取り付ける工程を行う。具体的には、まず、外壁材４の鉛直部４０の屋内側の面に形成されている溝部４２内に取付プレート１５を挿入する。取付プレート１５は短辺の長さが溝部４２のリップ間の開口よりも短く形成され、長辺がリップ間の開口よりも長く形成されている。したがって、取付プレート１５の短辺が溝部４２の開口の幅方向を向くようにして、取付プレート１５を開口から溝部４２に挿入した後、当該取付プレート１５を９０度回転させることで、溝部４２内に収納させる。そして、外壁取付金具１の第一板部１０を溝部４２のリップに当接させて、取付ボルト１４を第一板部１０に形成される取付孔１３に挿入し、取付プレート１５のネジ孔１６に螺着させて、更に取付ボルト１４を締め付けることで、溝部４２のリップを取付プレート１５及び第一板部１０で挟み込んで、外壁取付金具１を外壁材４に取り付ける。外壁材４を外壁取付金具１に取り付けると、外壁取付金具１の第二板部１１は、外壁材４の水平部４１よりも長く延びて形成されており、第二板部１１の挿入孔１８が外壁材４の水平部４１と重ならない位置に配置される。 In the construction method of the exterior wall mounting structure for constructing the exterior wall mounting structure as described above, first, as shown in FIG. Specifically, first, the mounting plate 15 is inserted into the groove portion 42 formed in the indoor side surface of the vertical portion 40 of the exterior wall material 4 . The mounting plate 15 has short sides shorter than the opening between the lips of the groove portion 42 and long sides longer than the opening between the lips. Therefore, after inserting the mounting plate 15 into the groove 42 through the opening with the short side of the mounting plate 15 facing the width direction of the opening of the groove 42 , the mounting plate 15 is rotated by 90 degrees so that the inside of the groove 42 is be stored in Then, the first plate portion 10 of the outer wall mounting bracket 1 is brought into contact with the lip of the groove portion 42, the mounting bolt 14 is inserted into the mounting hole 13 formed in the first plate portion 10, and the screw hole 16 of the mounting plate 15 is inserted. , and further tightening the mounting bolt 14, the lip of the groove portion 42 is sandwiched between the mounting plate 15 and the first plate portion 10, and the exterior wall mounting bracket 1 is mounted to the exterior wall material 4. - 特許庁When the exterior wall member 4 is attached to the exterior wall mounting bracket 1, the second plate portion 11 of the exterior wall mounting bracket 1 is formed to extend longer than the horizontal portion 41 of the exterior wall member 4, and the insertion hole 18 of the second plate portion 11 is formed. is arranged at a position not overlapping the horizontal portion 41 of the outer wall material 4 .

そして、図６に示すように、外壁取付金具１が取り付けられた外壁材４を当該外壁材４が配置される位置に持ち上げて、外壁取付金具１の係止腕部１２と第二板部１１とで、梁３の下フランジ部３０を挟み込むことで、外壁材４を梁３に仮置きする。次に、梁３に仮置きした状態の外壁材４の高さ位置を確認し、当該外壁材４の高さを上下に調整する必要がある場合には、一旦、外壁材４を梁３から取り外す。このとき外壁材４に取り付けられている外壁取付金具１は、係止腕部１２と第二板部１１とで梁３の下フランジ部３０を挟み込んでいるだけなので、極めて簡単に外壁材４を梁３から取り外すことができる。その後、取付ボルト１４を緩めて、取付孔１３に沿って外壁取付金具１に対する外壁材４の高さ方向の位置を調整し、再び取付ボルト１４を締め付けて、外壁材４に外壁取付金具１を取り付けて、再度、外壁取付金具１の係止腕部１２と第二板部１１とで、梁３の下フランジ部３０を挟み込んで、外壁材４を梁３に仮置きする。このとき、図５に示すように、外壁材４の高さ方向の位置を調整することで、取付ボルト１４のボルト頭は、鉛直方向に長い長孔である取付孔１３に沿って上下に移動することとなり当該ボルト頭と梁３の下フランジ部３０とが接近するが、取付ボルト１４が極低頭ボルトであるのでボルト頭と下フランジ部３０とが干渉することなく、外壁材４の高さ方向の位置調整を適切に行うことができる。 Then, as shown in FIG. 6, the outer wall member 4 to which the outer wall mounting bracket 1 is attached is lifted to a position where the outer wall member 4 is arranged, and the locking arm portion 12 and the second plate portion 11 of the outer wall mounting bracket 1 are engaged. By sandwiching the lower flange portion 30 of the beam 3, the external wall material 4 is temporarily placed on the beam 3. Next, the height position of the external wall material 4 temporarily placed on the beam 3 is confirmed, and if the height of the external wall material 4 needs to be adjusted vertically, the external wall material 4 is temporarily removed from the beam 3. Remove. At this time, the outer wall mounting bracket 1 attached to the outer wall member 4 is simply sandwiched between the locking arm portion 12 and the second plate portion 11 to sandwich the lower flange portion 30 of the beam 3, so that the outer wall member 4 can be removed very easily. It can be removed from the beam 3. After that, the mounting bolts 14 are loosened to adjust the height direction position of the exterior wall material 4 with respect to the exterior wall mounting bracket 1 along the mounting holes 13, and the mounting bolts 14 are tightened again to attach the exterior wall mounting bracket 1 to the exterior wall material 4. Once attached, the outer wall member 4 is temporarily placed on the beam 3 by sandwiching the lower flange portion 30 of the beam 3 between the locking arm portion 12 and the second plate portion 11 of the outer wall mounting bracket 1 again. At this time, as shown in FIG. 5, by adjusting the position of the outer wall material 4 in the height direction, the bolt head of the mounting bolt 14 moves up and down along the mounting hole 13, which is an elongated hole in the vertical direction. As a result, the bolt head and the lower flange portion 30 of the beam 3 approach each other. Position adjustment in the vertical direction can be performed appropriately.

そして、図７に示すように、外壁取付金具１の第二板部１１に形成された挿入孔１８に固定ボルト１７を下から挿入し、さらに梁３の下フランジ部３０に形成された固定孔１９に固定ボルト１７を挿入し、下フランジ部３０の上で固定ボルト１７にナット２０を締め付けることで、第二板部１１と下フランジ部３０を連結する。固定ボルト１７は下側から挿入されるので、第二板部１１の下側には固定ボルト１７のボルト頭のみが突き出すこととなり、上側から固定する場合のように固定ボルト１７のネジ部が下方に突出することがなく、図８に示すように、軒先の野縁２３等の他の部材に干渉することを防止できる。また、外壁取付金具１は係止腕部１２と第二板部１１とで下フランジ部３０を挟みこむことで、外壁材４及び外壁取付金具１が仮置きされているので、下側から固定ボルト１７を挿入孔１８及び固定孔１９に挿入して固定する作業を行うときに、作業者が外壁材４及び外壁取付金具１を支える必要がなく、作業者が一人で比較的簡単に作業を行うことができる。このとき、固定ボルト１７及びナット２０を完全に締め付ける前に、外壁材４の鉛直部４０の不陸を調整する。第二板部１１に形成され固定ボルト１７が挿入される挿入孔１８は、長孔であり、外壁取付金具１は、係止腕部１２と第二板部１１とで下フランジ部３０を挟み込んで仮置きされている状態であるので、外壁取付金具１を屋外方向に引き出し又は屋内方向に押し込むことで不陸を調整することができる。不陸が調整されると、固定ボルト１７を十分に締め付けて外壁取付金具１と下フランジ部３０とを固定して、外壁材４を梁３に固定する。 Then, as shown in FIG. 7, the fixing bolt 17 is inserted from below into the insertion hole 18 formed in the second plate portion 11 of the exterior wall mounting bracket 1, and further the fixing hole formed in the lower flange portion 30 of the beam 3 The second plate portion 11 and the lower flange portion 30 are connected by inserting the fixing bolt 17 into the lower flange portion 30 and tightening the nut 20 to the fixing bolt 17 on the lower flange portion 30 . Since the fixing bolt 17 is inserted from the lower side, only the bolt head of the fixing bolt 17 protrudes from the lower side of the second plate portion 11, and the threaded portion of the fixing bolt 17 is downward as in the case of fixing from the upper side. As shown in FIG. 8, it is possible to prevent interference with other members such as the joist 23 of the edge of the eaves. In addition, since the outer wall mounting bracket 1 has the lower flange portion 30 sandwiched between the locking arm portion 12 and the second plate portion 11, the outer wall material 4 and the outer wall mounting bracket 1 are temporarily placed, so that the outer wall mounting bracket 1 is fixed from below. When the work of inserting the bolt 17 into the insertion hole 18 and the fixing hole 19 and fixing is performed, the worker does not need to support the exterior wall member 4 and the exterior wall mounting bracket 1, and the work can be relatively easily performed by one worker. It can be carried out. At this time, unevenness of the vertical portion 40 of the outer wall material 4 is adjusted before the fixing bolt 17 and the nut 20 are completely tightened. The insertion hole 18 formed in the second plate portion 11 and into which the fixing bolt 17 is inserted is an elongated hole, and the outer wall mounting bracket 1 sandwiches the lower flange portion 30 between the locking arm portion 12 and the second plate portion 11. , the unevenness can be adjusted by pulling out the outer wall mounting bracket 1 in the outdoor direction or pushing it in the indoor direction. When the unevenness is adjusted, the fixing bolts 17 are sufficiently tightened to fix the outer wall mounting bracket 1 and the lower flange portion 30, thereby fixing the outer wall material 4 to the beam 3.

その後、図８に示すように、野縁２３を固定し、軒裏板材２４を敷設し、更に、図３に示すように、軒裏板材２４の端縁に軒裏見切材２５を設置する。また、外壁材４の鉛直部４０の上側には、上部外壁材５との間に形成された間隙にバックアップ材２１及び目地材２２を充填して水平目地を形成する。 After that, as shown in FIG. 8, the joists 23 are fixed, the eaves board material 24 is laid, and further, as shown in FIG. On the upper side of the vertical portion 40 of the outer wall material 4, a gap formed between the outer wall material 4 and the upper outer wall material 5 is filled with the backup material 21 and the joint material 22 to form a horizontal joint.

本発明の実施の形態は上述の形態に限ることなく、本発明の思想の範囲を逸脱しない範囲で適宜変更することができることは云うまでもない。 It goes without saying that the embodiment of the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the idea of the present invention.

本発明に係る外壁取付金具１、外壁取付構造２、及び外壁取付構造の施工方法は、住宅の開口部の屋外側の上縁に形成されるまぐさ部に配置される梁３に断面Ｌ字の外壁材４を取り付ける外壁取付金具１、外壁取付構造２、及び外壁取付構造の施工方法として好適である。 An exterior wall mounting bracket 1, an exterior wall mounting structure 2, and a method of constructing an exterior wall mounting structure according to the present invention are provided by: It is suitable as a construction method for the exterior wall mounting bracket 1 for mounting the exterior wall material 4, the exterior wall mounting structure 2, and the exterior wall mounting structure.

１ 外壁取付金具
２ 外壁取付構造
３ 梁
４ 外壁材
１０ 第一板部
１１ 第二板部
１２ 係止腕部
１３ 取付孔
１４ 取付ボルト
１５ 取付プレート
１６ ネジ孔
１７ 固定ボルト
１８ 挿入孔
１９ 固定孔
３０ 下フランジ部
４０ 鉛直部
４１ 水平部
４２ 溝部 Reference Signs List 1 exterior wall mounting bracket 2 exterior wall mounting structure 3 beam 4 exterior wall material 10 first plate portion 11 second plate portion 12 locking arm portion 13 mounting hole 14 mounting bolt 15 mounting plate 16 screw hole 17 fixing bolt 18 insertion hole 19 fixing hole 30 Lower flange portion 40 Vertical portion 41 Horizontal portion 42 Groove portion

Claims (9)

鉛直部と水平部とを有する断面Ｌ字に形成された外壁材を、少なくとも下端に水平な平板状の下フランジ部を有する梁に固定する外壁取付金物であって、
外壁材の鉛直部の屋内側の面に固定される鉛直な平板状の第一板部と、
前記第一板部の下端から水平に延び、前記下フランジ部の下面に当接して固定される第二板部と、
前記第一板部から水平に延び、前記下フランジ部の上面に当接する係止腕部と、
を備えることを特徴とする外壁取付金具。 An exterior wall mounting bracket for fixing an exterior wall material having an L-shaped cross section having a vertical portion and a horizontal portion to a beam having at least a horizontal flat plate-shaped lower flange portion at the lower end thereof,
a vertical flat plate-shaped first plate portion fixed to the indoor side surface of the vertical portion of the exterior wall material;
a second plate portion horizontally extending from the lower end of the first plate portion and fixed in contact with the lower surface of the lower flange portion;
a locking arm portion extending horizontally from the first plate portion and in contact with the upper surface of the lower flange portion;
An exterior wall mounting bracket, comprising: 下端に下フランジ部が設けられる梁と、
鉛直部と水平部とを有するＬ字に形成され、前記鉛直部の裏面に沿って水平方向にＣ形鋼の溝部が形成された外壁材と、
請求項１に記載の外壁取付金具と、
を備えることを特徴とする外壁取付構造。 a beam provided with a lower flange portion at its lower end;
an exterior wall material formed in an L shape having a vertical portion and a horizontal portion, and having a C-shaped steel groove formed in the horizontal direction along the back surface of the vertical portion;
The exterior wall mounting bracket according to claim 1;
An exterior wall attachment structure comprising: 前記溝部内に収納され、ネジ孔を有する取付プレートと、
前記第一板部に形成される取付孔に挿入されるとともに、前記ネジ孔に螺着して、前記外壁材に前記外壁取付金具を取り付ける取付ボルトと、をさらに備え、
前記取付孔は鉛直方向に長い長孔であることを特徴とする請求項２に記載の外壁取付構造。 a mounting plate received in the groove and having a screw hole;
a mounting bolt that is inserted into a mounting hole formed in the first plate portion and screwed into the screw hole to mount the outer wall mounting bracket to the outer wall material;
3. The exterior wall attachment structure according to claim 2, wherein the attachment hole is a vertically elongated hole. 前記取付ボルトは、極低頭ボルトであることを特徴とする請求項３に記載の外壁取付構造。 4. The exterior wall mounting structure according to claim 3, wherein the mounting bolt is a very low head bolt. 前記梁の下フランジ部に固定ボルトが挿入される固定孔が形成されるとともに、前記第二板部に、前記固定ボルトが挿入される挿入孔が形成されており、
前記挿入孔は、前記第二板部の延出方向に長い長孔であることを特徴とする請求項３又は請求項４に記載の外壁取付構造。 A fixing hole into which a fixing bolt is inserted is formed in the lower flange portion of the beam, and an insertion hole into which the fixing bolt is inserted is formed in the second plate portion,
5. The exterior wall attachment structure according to claim 3, wherein the insertion hole is an elongated hole elongated in the extending direction of the second plate portion. 前記固定ボルトは、下方から前記挿入孔及び前記固定孔に挿入されて、前記下フランジ部の上側でナットが締結されることを特徴とする請求項５に記載の外壁取付構造。 6. The exterior wall attachment structure according to claim 5, wherein the fixing bolt is inserted into the insertion hole and the fixing hole from below, and a nut is fastened on the upper side of the lower flange portion. 前記外壁材の水平部は、上側に前記下フランジ部の一部が重なるように前記鉛直部の下端から突出して形成されており、
前記固定孔は、前記水平部が重ならない位置の前記下フランジ部に形成されており、
前記第二板部は、前記下フランジ部よりも水平方向に延びて、前記固定孔と重なる位置に挿入孔が形成されることを特徴とする請求項６に記載の外壁取付構造。 The horizontal part of the outer wall material is formed to protrude from the lower end of the vertical part so that a part of the lower flange part overlaps on the upper side,
The fixing hole is formed in the lower flange portion at a position where the horizontal portion does not overlap,
7. The exterior wall attachment structure according to claim 6, wherein said second plate portion extends in the horizontal direction from said lower flange portion and has an insertion hole formed at a position overlapping said fixing hole. 前記梁は、Ｈ形鋼の下面に上下逆向きのＴ字に形成された形鋼を固定して形成される補強梁であることを特徴とする請求項２から請求項７のいずれかに記載の外壁取付構造。 8. The beam is a reinforcing beam formed by fixing an upside-down T-shaped steel to the lower surface of the H-shaped steel. exterior wall mounting structure. 請求項２から請求項８のいずれかに記載の外壁取付構造の施工方法であって、
前記外壁材の前記鉛直部の屋内側の面に前記外壁取付金具の前記第一板部を取り付ける工程と、
前記外壁材が取り付けられた前記外壁取付金具の前記係止腕部と前記第二板部とで、前記梁の前記下フランジ部を挟み込んで保持する工程と、
前記下フランジ部と前記第二板部とを固定する工程と、
を備えることを特徴とする外壁取付構造の施工方法。 A construction method for an exterior wall attachment structure according to any one of claims 2 to 8,
attaching the first plate portion of the exterior wall mounting bracket to the indoor surface of the vertical portion of the exterior wall material;
a step of sandwiching and holding the lower flange portion of the beam between the locking arm portion and the second plate portion of the exterior wall mounting bracket to which the exterior wall material is attached;
fixing the lower flange portion and the second plate portion;
A construction method for an exterior wall attachment structure, comprising:

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