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JP7359591B2 - inorganic building board - Google Patents
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JP7359591B2 - inorganic building board - Google Patents

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JP7359591B2
JP7359591B2 JP2019148030A JP2019148030A JP7359591B2 JP 7359591 B2 JP7359591 B2 JP 7359591B2 JP 2019148030 A JP2019148030 A JP 2019148030A JP 2019148030 A JP2019148030 A JP 2019148030A JP 7359591 B2 JP7359591 B2 JP 7359591B2
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building board
inorganic building
bottom joint
end surface
masking tape
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JP2021028450A (en
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至功 日永田
圭子 大段
健一 山本
謙吾 石丸
莉樹 宮田
幸治 山内
潔 田中
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Daiwa House Industry Co Ltd
KMEW Co Ltd
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Kubota Matsushitadenko Exterior Works Ltd
Daiwa House Industry Co Ltd
KMEW Co Ltd
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Description

本発明は、無機質建築板に関する。より詳細には、底目地を有する無機質建築板に関する。 The present invention relates to an inorganic building board. More specifically, the present invention relates to an inorganic building board having a bottom joint.

特許文献1には、マスキングテープ付外壁パネルが記載されている。このマスキングテープ付外壁パネルは、表面に凹凸形状を有する外壁パネルと、外壁パネルの表面の端部に貼着されているマスキングテープとを備えている。 Patent Document 1 describes an exterior wall panel with masking tape. This exterior wall panel with masking tape includes an exterior wall panel having an uneven surface and a masking tape attached to an end of the surface of the exterior wall panel.

マスキングテープは、熱可塑性基材を備えており、貼着工程により、外壁パネルの表面の端部に貼着される。この後、熱可塑性基材の軟化点以上の温度に、マスキングテープを加熱する加熱工程を行う。そして、この加熱工程により、マスキングテープを外壁パネルの表面の凹凸形状に追随させるように変形させている。これにより、マスキングテープが外壁パネルの表面に密着し、外壁パネルの表面の凹凸に隙間なくマスキングテープを貼着することができ、シーリング打設時にシーリング材が外壁パネルの表面に付着しにくくなる。 The masking tape includes a thermoplastic base material and is applied to the edge of the surface of the exterior wall panel in a pasting process. After this, a heating step is performed in which the masking tape is heated to a temperature equal to or higher than the softening point of the thermoplastic base material. Through this heating process, the masking tape is deformed so as to follow the uneven shape of the surface of the outer wall panel. This makes it possible for the masking tape to adhere closely to the surface of the exterior wall panel, to adhere the masking tape to the unevenness of the surface of the exterior wall panel without any gaps, and to prevent the sealant from adhering to the surface of the exterior wall panel during sealing installation.

特開2018-025017号公報Japanese Patent Application Publication No. 2018-025017

しかし、上記のマスキングテープ付外壁パネルでは、マスキングテープとして、熱可塑性基材を使用しているため、マスキングテープを形成する材料が限定されてしまう、という問題があった。またマスキングテープを外壁パネルに貼着するにあたって、加熱工程が必要であり、マスキングテープを貼り付ける際の作業性が低下するという問題があった。 However, in the above-mentioned exterior wall panel with masking tape, since a thermoplastic base material is used as the masking tape, there is a problem in that the materials from which the masking tape is formed are limited. Furthermore, a heating process is required to attach the masking tape to the exterior wall panel, which poses a problem in that the workability of attaching the masking tape decreases.

本発明は、上記事由に鑑みてなされており、一般的なマスキングテープを作業性よく貼り付けることができる無機質建築板を提供することを目的とする。 The present invention has been made in view of the above reasons, and an object of the present invention is to provide an inorganic building board to which general masking tape can be attached with good workability.

本発明の一態様に係る無機質建築板は、端面に至る底目地を備えている。前記端面の表面側角部に平面状の面取り部を備えてなる。前記底目地の底面は、基準面と、前記底目地の端部に設けられて前記基準面から前記端面側に向かって表面側に傾斜する傾斜部とを有している。前記面取り部が、コーキング処理を行う際に貼着されるマスキングテープの貼り代として機能するよう、前記底目地の前記傾斜部の前記端面の表面側角部にまで至り、前記端面の両端にわたって連続するよう形成されている。 An inorganic building board according to one aspect of the present invention includes a bottom joint extending to an end surface. A planar chamfer is provided at a corner on the front side of the end face. The bottom surface of the bottom joint includes a reference surface and an inclined portion provided at an end of the bottom joint and inclined toward the front surface from the reference surface toward the end surface. The chamfer extends to the surface side corner of the end face of the inclined part of the bottom joint and is continuous across both ends of the end face so that the chamfer functions as a pasting allowance for masking tape applied when performing caulking treatment. It is formed to do so.

本発明によれば、面取り部にマスキングテープを貼り付けることができ、面取り部が無い場合に比べて、マスキングテープを貼り付ける面積が大きくなり、マスキングテープを作業性よく貼り付けることができる。また、面取り部のうち底目地の端面側角部にまで至る部分にマスキングテープを貼り付けることによって、底目地の端面側の開口部を塞ぎ、シーリング打設時にシーリング材が底目地に進入するのを抑制することができ、底目地にシーリング材が進入したとしてもその量を少量に抑えることができるため、底目地内のシーリング材除去作業を軽減することができる。そのため、シーリング材の打設後の仕上がり品質、すなわち意匠性を向上させることができる。さらにマスキングテープを貼り付ける際に加熱工程は不要であり、一般的なマスキングテープを使用することができる。 According to the present invention, the masking tape can be attached to the chamfered portion, and the area to which the masking tape is attached becomes larger than when there is no chamfered portion, and the masking tape can be attached with good workability. In addition, by pasting masking tape on the part of the chamfer that extends to the corner on the end face of the bottom joint, the opening on the end face side of the bottom joint is closed and the sealant does not enter the bottom joint when sealing is applied. , and even if the sealant enters the bottom joint, the amount can be kept to a small amount, so the work to remove the sealant from the bottom joint can be reduced. Therefore, it is possible to improve the finish quality after applying the sealant, that is, the design. Furthermore, no heating process is required when applying the masking tape, and a general masking tape can be used.

図1Aは、本発明に係る無機質建築板の実施形態1の一部を示す斜視図である。図1Bは、同上の端部を拡大した斜視図である。図1Cは、同上の底目地部分のXZ面の断面図である。FIG. 1A is a perspective view showing a part of Embodiment 1 of an inorganic building board according to the present invention. FIG. 1B is an enlarged perspective view of the end portion of the same. FIG. 1C is a cross-sectional view of the bottom joint portion in the XZ plane. 図2Aは、本発明に係る無機質建築板の実施形態2の一部を示す斜視図である。図2Bは、同上の端部を拡大した斜視図である。図2Cは、同上の底目地部分のXZ面の断面図である。FIG. 2A is a perspective view showing a part of Embodiment 2 of the inorganic building board according to the present invention. FIG. 2B is an enlarged perspective view of the end portion of the same. FIG. 2C is a cross-sectional view along the XZ plane of the bottom joint portion of the same as above. 図3A~Dは、本発明に係る無機質建築板の変形例を示す底目地部分のXZ面の断面図である。FIGS. 3A to 3D are cross-sectional views taken along the XZ plane of a bottom joint portion showing a modified example of the inorganic building board according to the present invention.

(実施形態1)
図1Aに本実施形態の無機質建築板1を示す。この無機質建築板1は、家屋やビルなどの建物の壁板として使用される。特に、無機質建築板1は、建物の外壁を構成する外壁板として使用される。
(Embodiment 1)
FIG. 1A shows an inorganic building board 1 of this embodiment. This inorganic building board 1 is used as a wall board for buildings such as houses and buildings. In particular, the inorganic building board 1 is used as an exterior wall board that constitutes the exterior wall of a building.

無機質建築板1は、未硬化の水硬性材料からなる平板状の基材をプレス成形することにより、底目地2を有して形成されている。未硬化の水硬性材料は、例えば、セメントなどの水硬性成分と、シリカや珪石粉等の骨材と、パルプや合成繊維等の補強繊維、及び水を含んで成形可能な材料である。 The inorganic building board 1 has a bottom joint 2 and is formed by press-molding a flat base material made of an uncured hydraulic material. The uncured hydraulic material is, for example, a moldable material containing a hydraulic component such as cement, an aggregate such as silica or silica powder, reinforcing fibers such as pulp or synthetic fiber, and water.

無機質建築板1は、平面視において、正方形状又は長方形状の矩形状に形成されている。また無機質建築板1は略板状に形成されている。なお、平面視とは、無機質建築板1の厚み方向Zと平行な方向において、無機質建築板1を表面11の方から見ることを意味する。無機質建築板1の表面11は、無機質建築板1を施工した際に、外側に向く面(下地と反対側に向く面)である。 The inorganic building board 1 is formed into a square or rectangular shape when viewed from above. Moreover, the inorganic building board 1 is formed into a substantially plate shape. Note that "planar view" means viewing the inorganic building board 1 from the surface 11 in a direction parallel to the thickness direction Z of the inorganic building board 1. The surface 11 of the inorganic building board 1 is the surface facing outward (the surface facing away from the base) when the inorganic building board 1 is constructed.

無機質建築板1は、表面に凹凸形状を有し、複数の底目地2と複数の凸部6とを有している。底目地2は厚み方向Zと直交する方向のうち、一つの方向に延びるように形成されている。底目地2が延びる方向をX方向とする。無機質建築板1は、複数の底目地2を有している。複数の底目地2は、X方向及び厚み方向Zに直交する方向に並んでいる。複数の底目地2が並ぶ方向をY方向とする。なお、以下では、Z方向を「高さ方向」という場合がある。また、以下では、無機質建築板1の表裏方向を「上下方向」とする場合もある。 The inorganic building board 1 has an uneven surface, and has a plurality of bottom joints 2 and a plurality of convex portions 6. The bottom joint 2 is formed to extend in one of the directions orthogonal to the thickness direction Z. The direction in which the bottom joint 2 extends is defined as the X direction. The inorganic building board 1 has a plurality of bottom joints 2. The plurality of bottom joints 2 are arranged in a direction perpendicular to the X direction and the thickness direction Z. The direction in which the plurality of bottom joints 2 are lined up is defined as the Y direction. Note that hereinafter, the Z direction may be referred to as the "height direction". Furthermore, hereinafter, the front and back directions of the inorganic building board 1 may be referred to as the "vertical direction."

底目地2は無機質建築板1の表面11と端面12とに開口している。すなわち、底目地2は無機質建築板1の表面11に開口する表面開口部21と、無機質建築板1の端面12に開口する端面開口部22とを有している。表面開口部21は無機質建築板1のX方向の全長にわたって形成されている。端面開口部22は、底目地2のX方向の一方の端面を構成する端面開口部221と、底目地2のX方向の他方の端面を構成する端面開口部と、を含んでいる。一方の端面開口部221は、無機質建築板1のX方向における一方の端面121に開口している。他方の端面開口部は、無機質建築板1のX方向における他方の端面に開口している。Y方向において隣り合う表面開口部21の間には、表面部111が形成されている。表面部111は無機質建築板1の表面開口部21以外の表面を構成している。 The bottom joint 2 is open to the surface 11 and end surface 12 of the inorganic building board 1. That is, the bottom joint 2 has a surface opening 21 that opens to the surface 11 of the inorganic building board 1 and an end face opening 22 that opens to the end surface 12 of the inorganic building board 1. The surface opening 21 is formed over the entire length of the inorganic building board 1 in the X direction. The end face opening 22 includes an end face opening 221 that constitutes one end face of the bottom joint 2 in the X direction, and an end face opening that constitutes the other end face of the bottom joint 2 in the X direction. One end surface opening 221 opens to one end surface 121 of the inorganic building board 1 in the X direction. The other end surface opening opens to the other end surface of the inorganic building board 1 in the X direction. A surface portion 111 is formed between adjacent surface openings 21 in the Y direction. The surface portion 111 constitutes the surface of the inorganic building board 1 other than the surface opening 21 .

底目地2は、底面5と側面55とを備えている。底面5は表面開口部21と対向する位置に形成されている。側面55は底面5のY方向に並ぶ両端部から表面11の方に向かって突出するように形成されている。底面5のY方向の寸法は表面開口部21のY方向の寸法よりも小さい。したがって、Y方向に対向する2つの側面55の間隔は表面11に近づくに従って広くなるように、側面55が傾斜している。 The bottom joint 2 includes a bottom surface 5 and side surfaces 55. The bottom surface 5 is formed at a position facing the surface opening 21. The side surfaces 55 are formed to protrude toward the surface 11 from both ends of the bottom surface 5 that are aligned in the Y direction. The dimension of the bottom surface 5 in the Y direction is smaller than the dimension of the surface opening 21 in the Y direction. Therefore, the side surfaces 55 are inclined so that the distance between the two side surfaces 55 facing each other in the Y direction becomes wider as the surface 11 is approached.

底面5は、基準面51と、傾斜部52と、を有している。基準面51における底目地2のZ方向の寸法(高さ方向の位置)は、一定である一方、傾斜部52における底目地2のZ方向の寸法は、一方の端面121に近づくに連れて浅くなるように形成されている。すなわち、底面5は、基準面51から一方の端面121に近づくに連れて表面11に近づくように傾斜している傾斜部52を有している。傾斜部52は無機質建築板1の一方の端面121に達している。 The bottom surface 5 has a reference surface 51 and an inclined portion 52. While the dimension in the Z direction (position in the height direction) of the bottom joint 2 in the reference plane 51 is constant, the dimension in the Z direction of the bottom joint 2 in the inclined portion 52 becomes shallower as it approaches one end surface 121. It is formed to be. That is, the bottom surface 5 has an inclined portion 52 that is inclined so as to approach the surface 11 as one approaches one end surface 121 from the reference surface 51 . The inclined portion 52 reaches one end surface 121 of the inorganic building board 1.

傾斜部52は、平坦部53を更に有している。平坦部53における底目地2のZ方向の寸法は、一定である。つまり、平坦部53では表面開口部21から底面5(傾斜部52)までの寸法が一定である。傾斜部52及び平坦部53は基準面51よりも無機質建築板1の一方の端面121に近い方に形成されている面である。つまり、傾斜部52及び平坦部53は基準面51よりも底目地2の一方の端面開口部221に近い方に形成されている。平坦部53は傾斜部52の一方の端面121に近い部分で形成されている。つまり、平坦部53は傾斜部52のうち、一方の端面開口部221に近い部分で形成されている。よって、傾斜部52は平坦部53の部分で無機質建築板1の一方の端面121に達している。底面5は、基準面51から傾斜部52(平坦部53を含む)まで連続的に形成されているが、傾斜部52は平坦部53以外の部分では基準面51に対して一定の勾配を有している。なお、本明細書において、「一定」とは厳密な意味での一定ではなく、ほぼ一定を含む概念である。 The inclined portion 52 further includes a flat portion 53. The dimension of the bottom joint 2 in the flat portion 53 in the Z direction is constant. That is, in the flat portion 53, the dimension from the surface opening 21 to the bottom surface 5 (slanted portion 52) is constant. The inclined portion 52 and the flat portion 53 are surfaces formed closer to one end surface 121 of the inorganic building board 1 than the reference surface 51. That is, the inclined portion 52 and the flat portion 53 are formed closer to one end face opening 221 of the bottom joint 2 than the reference plane 51 is. The flat portion 53 is formed in a portion close to one end surface 121 of the inclined portion 52. That is, the flat portion 53 is formed in a portion of the inclined portion 52 that is close to one end face opening 221. Therefore, the inclined portion 52 reaches one end surface 121 of the inorganic building board 1 at the flat portion 53. The bottom surface 5 is formed continuously from the reference surface 51 to the sloped portion 52 (including the flat portion 53), but the sloped portion 52 has a constant slope with respect to the reference surface 51 except for the flat portion 53. are doing. Note that in this specification, "constant" does not mean constant in the strict sense, but is a concept that includes approximately constant.

そして、無機質建築板1は、端面12の表面11側角部に平面状の面取り部54を備えている。言い換えると、無機質建築板1は、一方の端面121に面取り部54を有する。面取り部54は底目地2の端面121側の底面5(平坦部53)より下方まで形成されている。すなわち、端面121は、Z方向に隣接する表面側端面部131と、裏面側端面部132とを有し、両端面部131,132は、Y方向に直線状に延びる境界線133で区画されている。裏面側端面部132は、略垂直な面(YZ平面に平行な面)に形成されており、表面側端面部131は、裏面側端面部132の上端である境界線133から上側部分で構成されており、底目地2に対応する複数の底目地対応端面部131aと、凸部6に対応する複数の凸部対応端面部131bと、を有し、底目地対応端面部131aと凸部対応端面部131bとがY方向に交互に並んでいる。この表面側端面部131は、境界線133から上側に向かって無機質建築板1の内方に向かってほぼ一定の勾配で傾斜している。面取り部54は、上記表面側端面部131で構成されており、Y方向の全長にわたって連続的に形成されている。このように面取り部54は、コーキング処理を行う際に貼着されるマスキングテープTの貼り代として機能するよう、底目地2の端面12側角部にまで至り、端面12のY方向の両端にわたって連続するよう形成されている。 The inorganic building board 1 is provided with a planar chamfered portion 54 at the corner portion of the end surface 12 on the side of the surface 11 . In other words, the inorganic building board 1 has the chamfered portion 54 on one end surface 121. The chamfered portion 54 is formed to extend below the bottom surface 5 (flat portion 53) of the bottom joint 2 on the end surface 121 side. That is, the end surface 121 has a front side end surface part 131 and a back side end surface part 132 that are adjacent to each other in the Z direction, and both end surface parts 131 and 132 are divided by a boundary line 133 that extends linearly in the Y direction. . The back side end surface portion 132 is formed on a substantially perpendicular surface (a surface parallel to the YZ plane), and the front side end surface portion 131 is formed from a portion above the boundary line 133 which is the upper end of the back side end surface portion 132. It has a plurality of bottom joint corresponding end face parts 131a corresponding to the bottom joint 2 and a plurality of convex part corresponding end face parts 131b corresponding to the convex part 6, and has a plurality of bottom joint corresponding end face parts 131a and a convex part corresponding end face. The portions 131b are arranged alternately in the Y direction. This surface side end surface portion 131 is inclined upward from the boundary line 133 toward the inside of the inorganic building board 1 at a substantially constant slope. The chamfered portion 54 is composed of the front side end face portion 131 and is continuously formed over the entire length in the Y direction. In this way, the chamfered portion 54 extends to the side corner of the end surface 12 of the bottom joint 2 and extends across both ends of the end surface 12 in the Y direction so as to function as an adhesion margin for the masking tape T applied when performing the caulking process. It is formed in a continuous manner.

無機質建築板1は、壁下地に取り付けることにより、外壁を構成する。この場合、複数の無機質建築板1を上下方向及び左右方向に並べることができる。そして、隣り合う無機質建築板1の端面12の間には間隙が設けられて目地が形成される。この目地にはシーリング材が充填されて外壁の防水性が向上する。目地にシーリング材を充填する場合、無機質建築板1の表面にシーリング材が付着しないように、マスキングテープTが使用される。 The inorganic building board 1 constitutes an outer wall by being attached to a wall base. In this case, a plurality of inorganic building boards 1 can be arranged vertically and horizontally. A gap is provided between the end surfaces 12 of adjacent inorganic building boards 1 to form a joint. These joints are filled with a sealant to improve the waterproofness of the exterior wall. When filling the joints with a sealant, a masking tape T is used to prevent the sealant from adhering to the surface of the inorganic building board 1.

マスキングテープTは加熱工程が不要な一般的なものを使用することができる。例えば、マスキングテープTは紙基材の片面に粘着層を有するものが使用可能である。マスキングテープTは、図1Bのように、無機質建築板1の端面121に貼り付けられる。端面121は無機質建築板1を施工した際にシーリング材が充填される目地を構成する端面である。マスキングテープTは、面取り部54のY方向の全長に貼り付けられる。マスキングテープTはY方向に延びるように配置される。これにより、端面開口部221の周囲、即ち端面開口部221のY方向両側の凸部対応端面部131bと端面開口部221の下側の底目地対応端面部131aにマスキングテープが貼り付けられて、端面開口部221がマスキングテープTで塞がれてシーリング打設時にシーリング材が底目地2内に進入しにくくなり、シーリング材が無機質建築板1の表面に付着しにくくなる。その結果、底目地2内のシーリング材除去作業が軽減され、仕上がり品質(意匠性)が向上する。 A general masking tape T that does not require a heating process can be used. For example, the masking tape T that has a paper base material and an adhesive layer on one side can be used. The masking tape T is attached to the end surface 121 of the inorganic building board 1, as shown in FIG. 1B. The end surface 121 is an end surface that constitutes a joint that is filled with a sealant when the inorganic building board 1 is constructed. The masking tape T is attached to the entire length of the chamfered portion 54 in the Y direction. The masking tape T is arranged so as to extend in the Y direction. As a result, masking tape is pasted around the end face opening 221, that is, on the convex part corresponding end face parts 131b on both sides of the end face opening 221 in the Y direction and on the bottom joint corresponding end face parts 131a on the lower side of the end face opening 221, The end face opening 221 is closed with the masking tape T, making it difficult for the sealant to enter the bottom joint 2 during sealing installation, and making it difficult for the sealant to adhere to the surface of the inorganic building board 1. As a result, the work of removing the sealant inside the bottom joint 2 is reduced, and the finished quality (design) is improved.

また傾斜部52により、端面開口部221の下側に底目地対応端面部131aを形成しやすくなる。 Furthermore, the inclined portion 52 facilitates forming the bottom joint corresponding end surface portion 131a below the end surface opening 221.

また平坦部53により、面取り54を形成する際に、底目地対応端面部131aの上端部が角張らず、バリが発生しにくくなる。 Further, due to the flat portion 53, when forming the chamfer 54, the upper end portion of the bottom joint corresponding end surface portion 131a is not angular, and burrs are less likely to occur.

(実施形態2)
本実施形態に係る無機質建築板1は、傾斜部52の構成が実施形態1に係る無機質建築板1と相違する。以下、実施形態1と同様の構成については、共通の符号を付して適宜説明を省略する。
(Embodiment 2)
The inorganic building board 1 according to this embodiment is different from the inorganic building board 1 according to the first embodiment in the configuration of the inclined portion 52. Hereinafter, configurations similar to those in Embodiment 1 will be given the same reference numerals and descriptions will be omitted as appropriate.

本実施形態に係る無機質建築板1は、傾斜部52が平坦部53を有していない。底面5は、基準面51から一方の端面121に近づくに連れて表面11に近づくように傾斜している傾斜部52を有しているが、傾斜部52は基準面51に対して一定の勾配を有して無機質建築板1の一方の端面121に達している。 In the inorganic building board 1 according to this embodiment, the inclined portion 52 does not have the flat portion 53. The bottom surface 5 has a sloped portion 52 that slopes closer to the surface 11 as it approaches one end surface 121 from the reference surface 51, but the sloped portion 52 has a constant slope with respect to the reference surface 51. and reaches one end surface 121 of the inorganic building board 1.

本実施形態に係る無機質建築板1では、傾斜部52は底目地2の端部に設けられている。また傾斜部52は基準面51から端面12側に向かって表面11側に傾斜している。したがって、底目地2の端面開口部221の下側開口縁部は傾斜部52で構成される。そして、傾斜部52の端面12側角部にまで至る面取り部54が形成されている。 In the inorganic building board 1 according to this embodiment, the inclined portion 52 is provided at the end of the bottom joint 2. Further, the inclined portion 52 is inclined from the reference surface 51 toward the end surface 12 and toward the surface 11. Therefore, the lower opening edge of the end face opening 221 of the bottom joint 2 is constituted by the inclined portion 52 . A chamfered portion 54 is formed that extends to the corner portion of the end surface 12 of the inclined portion 52.

(変形例)
実施形態1及び2は、本発明の様々な実施形態の一つに過ぎない。実施形態1及び2は、本発明の目的を達成できれば、設計等に応じて種々の変更が可能である。
(Modified example)
Embodiments 1 and 2 are just one of various embodiments of the present invention. Embodiments 1 and 2 can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved.

上記では、平坦部53を除く傾斜部52の勾配は基準面51に対して一定であったが、これに限られない。傾斜部52の勾配は、基準面51から端面12に達するまでの間で変化してもよい。図3Aでは、傾斜部52は、表面11側に向かって凹状に湾曲する面に形成されている。図3Bでは、傾斜部52は、表面11側に向かって凸状に湾曲する面に形成されている。図3Cでは、図3Bよりも曲率半径が小さな凸状の湾曲面で、傾斜部52が表面11側に向かって凸状に湾曲して形成されている。さらに、図3Dのように、底面5は傾斜部52を有していなくてもよく、この場合、平坦な基準面51が端面12に達している。 In the above description, the slope of the slope portion 52 excluding the flat portion 53 is constant with respect to the reference plane 51, but the slope is not limited to this. The slope of the inclined portion 52 may change from the reference surface 51 to the end surface 12. In FIG. 3A, the inclined portion 52 is formed in a surface that curves concavely toward the surface 11 side. In FIG. 3B, the inclined portion 52 is formed in a surface that curves convexly toward the surface 11 side. In FIG. 3C, the inclined portion 52 is formed as a convex curved surface having a smaller radius of curvature than that in FIG. 3B, and is curved convexly toward the surface 11 side. Furthermore, as shown in FIG. 3D, the bottom surface 5 may not have the slope 52, in which case the flat reference surface 51 reaches the end surface 12.

上記では、無機質建築板1は壁材として説明したが、これに限られず、無機質建築板1は、例えば、天井板や屋根板などであってもよい。 Although the inorganic building board 1 has been described above as a wall material, it is not limited to this, and the inorganic building board 1 may be, for example, a ceiling board or a roof board.

上記では、壁板が外壁板の場合について説明したが、室内の内壁を構成する内壁板であってもよい。 Although the case where the wall board is an external wall board has been described above, it may be an internal wall board that constitutes an interior wall of a room.

上記では、無機質建築板1が窯業系サイディング材の場合について説明したが、無機質建築板1は、例えば、軽量気泡コンクリートパネル(ALCパネル)、タイルなどであってもよい。 Although the case where the inorganic building board 1 is a ceramic siding material has been described above, the inorganic building board 1 may be, for example, a lightweight aerated concrete panel (ALC panel), a tile, or the like.

無機質建築板1の表面11(底目地2の底面5や側面55も含む)には、例えば、細かい凹凸模様(エンボスや梨地)が形成されていてもよい。 For example, a fine uneven pattern (embossed or satined) may be formed on the surface 11 of the inorganic building board 1 (including the bottom surface 5 and side surface 55 of the bottom joint 2).

上記では、複数の底目地2の全てに対応して、面取り部54、傾斜部52及び平坦部53を形成していたが、これに限られず、一部の底目地2に対応して、面取り部54、傾斜部52及び平坦部53を形成してもよい。 In the above, the chamfered portion 54, the sloped portion 52, and the flat portion 53 are formed corresponding to all of the plurality of bottom joints 2. A portion 54, an inclined portion 52, and a flat portion 53 may be formed.

上記では、底目地2の片方の端部に対応して、面取り部54、傾斜部52及び平坦部53を形成していたが、これに限られず、底目地2の両方の端部に対応して、面取り部54、傾斜部52及び平坦部53を形成してもよい。 In the above, the chamfered portion 54, the inclined portion 52, and the flat portion 53 are formed corresponding to one end of the bottom joint 2, but the present invention is not limited to this, and they may be formed corresponding to both ends of the bottom joint 2. Thus, the chamfered portion 54, the inclined portion 52, and the flat portion 53 may be formed.

上記では、複数の底目地2の全てが一方向(X方向)に延びる場合について説明したが、これに限られず、一方向に延びる底目地2と、この一方向と交差する方向に延びる底目地2とを有していてもよい。また、上記では、底目地2は、X方向の全長にわたって形成されているが、それに限らず、例えば、底目地2の一方の端部が無機質建築板1の端面に開口していなくてもよい。 In the above, a case has been described in which all of the plurality of bottom joints 2 extend in one direction (X direction), but the present invention is not limited to this. 2. Further, in the above, the bottom joint 2 is formed over the entire length in the X direction, but the invention is not limited thereto. For example, one end of the bottom joint 2 may not be open to the end surface of the inorganic building board 1. .

上記では、複数の底目地2の全てが無機質建築板1の端面12に開口しているが、これに限られず、一部の底目地2が無機質建築板1の端面12に開口していてもよい。 In the above, all of the plurality of bottom joints 2 are open to the end surface 12 of the inorganic building board 1, but the invention is not limited to this, and even if some of the bottom joints 2 are open to the end surface 12 of the inorganic building board 1. good.

(まとめ)
以上説明したように、第1の態様に係る無機質建築板1は、端面12に至る底目地2を備える。端面12の表面11側角部に平面状の面取り部54を備える。面取り部54が、コーキング処理を行う際に貼着されるマスキングテープTの貼り代として機能するよう、底目地2の端面12側角部にまで至り、端面12の両端にわたって連続するよう形成されている。
(summary)
As explained above, the inorganic building board 1 according to the first aspect includes the bottom joint 2 that reaches the end surface 12. A planar chamfered portion 54 is provided at a corner portion of the end face 12 on the side of the surface 11 . The chamfered portion 54 is formed so as to extend to the side corner of the end surface 12 of the bottom joint 2 and continue across both ends of the end surface 12 so as to function as a pasting allowance for the masking tape T applied when performing the caulking process. There is.

この態様によれば、面取り部54にマスキングテープTを貼り付けることができ、面取り部54が無い場合に比べて、マスキングテープTを貼り付ける面積が大きくなり、マスキングテープTを作業性よく貼り付けることができる。また、面取り部54のうち底目地2の端面12側角部にまで至る部分にマスキングテープTを貼り付けることによって、底目地2の端面12側の端面開口部22を塞ぎ、シーリング打設時にシーリング材が底目地2に進入するのを抑制することができ、底目地2にシーリング材が進入したとしてもその量を少量に抑えることができるため、底目地2内のシーリング材除去作業を軽減することができる。そのため、シーリング材の打設後の仕上がり品質、すなわち意匠性を向上させることができる。またマスキングテープTを貼り付ける際に加熱工程は不要であり、一般的なマスキングテープTを使用することができる。 According to this aspect, the masking tape T can be pasted on the chamfered portion 54, and the area to which the masking tape T is pasted becomes larger than in the case where there is no chamfered portion 54, and the masking tape T can be pasted with good workability. be able to. In addition, by pasting masking tape T on a portion of the chamfered portion 54 that extends to the side corner of the end surface 12 of the bottom joint 2, the end surface opening 22 on the end surface 12 side of the bottom joint 2 is closed, and the sealing tape is removed at the time of sealing. It is possible to suppress the material from entering the bottom joint 2, and even if the sealant enters the bottom joint 2, the amount can be kept to a small amount, so the work of removing the sealant from the bottom joint 2 is reduced. be able to. Therefore, it is possible to improve the finish quality after applying the sealant, that is, the design. Furthermore, no heating process is necessary when applying the masking tape T, and a general masking tape T can be used.

第2の態様に係る無機質建築板1は、第1の態様において、底目地2の底面5は、基準面51と、底目地2の端部に設けられて基準面51から端面12側に向かって表面11側に傾斜する傾斜部52とを有する。傾斜部52の端面12側角部に面取り部54が形成されている。 In the inorganic building board 1 according to the second aspect, in the first aspect, the bottom surface 5 of the bottom joint 2 is provided at the reference surface 51 and at the end of the bottom joint 2, and extends from the reference surface 51 toward the end surface 12 side. It has an inclined part 52 which is inclined towards the surface 11 side. A chamfered portion 54 is formed at a corner portion of the inclined portion 52 on the side of the end surface 12 .

この態様によれば、傾斜部52により、底目地2の開口の下側に面取り部54が形成しやすくなる。 According to this aspect, the inclined portion 52 facilitates forming the chamfered portion 54 below the opening of the bottom joint 2.

第3の態様に係る無機質建築板1は、第2の態様において、傾斜部52は、端面12側に、その表面が基準面51と略平行な平坦部53を更に有する。傾斜部52の平坦部53の端面12側角部に面取り部54が形成されている。 In the inorganic building board 1 according to the third aspect, in the second aspect, the inclined portion 52 further has a flat portion 53 on the end surface 12 side, the surface of which is substantially parallel to the reference plane 51. A chamfered portion 54 is formed at a corner portion of the flat portion 53 of the inclined portion 52 on the side of the end surface 12 .

この態様によれば、平坦部53により、面取り54を形成する際に、端面12が角張らず、バリが発生しにくくなる。 According to this aspect, the flat portion 53 prevents the end face 12 from becoming angular when forming the chamfer 54, making it difficult for burrs to occur.

1 無機質建築板
11 表面
12 端面
2 底目地
5 底面
51 基準面
52 傾斜部
53 平坦部
54 面取り部
1 Inorganic building board 11 Surface 12 End surface 2 Bottom joint 5 Bottom surface 51 Reference surface 52 Inclined portion 53 Flat portion 54 Chamfered portion

Claims (2)

端面に至る底目地を備え、前記端面の表面側角部に平面状の面取り部を備えてなる無機質建築板において、
前記底目地の底面は、基準面と、前記底目地の端部に設けられて前記基準面から前記端面側に向かって表面側に傾斜する傾斜部とを有し、
前記面取り部が、コーキング処理を行う際に貼着されるマスキングテープの貼り代として機能するよう、前記底目地の前記傾斜部の前記端面の表面側角部にまで至り、前記端面の両端にわたって連続するよう形成されている、
無機質建築板。
An inorganic building board comprising a bottom joint extending to an end face, and a flat chamfered portion at a corner on the surface side of the end face,
The bottom surface of the bottom joint has a reference surface and an inclined part provided at an end of the bottom joint and inclined from the reference surface toward the end surface side toward the surface side,
The chamfer extends to the surface side corner of the end face of the inclined part of the bottom joint and is continuous across both ends of the end face so that the chamfer functions as a pasting allowance for masking tape applied when performing caulking treatment. is formed to
Inorganic building board.
前記傾斜部は、前記端面側に、その表面が前記基準面と略平行な平坦部を更に有し、
前記傾斜部の前記平坦部の前記端面の表面側角部に前記面取り部が形成されている、
請求項1に記載の無機質建築板。
The inclined part further has a flat part on the end surface side, the surface of which is substantially parallel to the reference plane,
The chamfered portion is formed at a corner portion on the front surface side of the end surface of the flat portion of the inclined portion.
The inorganic building board according to claim 1 .
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010059652A (en) 2008-09-02 2010-03-18 Toto Ltd Wash place floor
JP2016075112A (en) 2014-10-08 2016-05-12 旭化成ホームズ株式会社 Exterior wall panel, and joint structure on exterior wall
JP2018070822A (en) 2016-11-01 2018-05-10 積水ハウス株式会社 Method for applying sealant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH076301Y2 (en) * 1988-09-19 1995-02-15 大建工業株式会社 Ceiling or wall finishing structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010059652A (en) 2008-09-02 2010-03-18 Toto Ltd Wash place floor
JP2016075112A (en) 2014-10-08 2016-05-12 旭化成ホームズ株式会社 Exterior wall panel, and joint structure on exterior wall
JP2018070822A (en) 2016-11-01 2018-05-10 積水ハウス株式会社 Method for applying sealant

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