JP7349220B2 - building board - Google Patents

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JP7349220B2
JP7349220B2 JP2019034977A JP2019034977A JP7349220B2 JP 7349220 B2 JP7349220 B2 JP 7349220B2 JP 2019034977 A JP2019034977 A JP 2019034977A JP 2019034977 A JP2019034977 A JP 2019034977A JP 7349220 B2 JP7349220 B2 JP 7349220B2
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joints
building board
joint
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boundary line
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JP2020139305A (en
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優 小島
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KMEW Co Ltd
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Kubota Matsushitadenko Exterior Works Ltd
KMEW Co Ltd
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Description

本発明は、一般に建築板に関し、より詳細には複数の凸部を備える建築板に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to building boards, and more particularly to building boards having a plurality of protrusions.

特許文献１には、表面に溝状の目地が設けられたセメント組成体（基材）の仕上げ方法が開示されている。この方法は、目地塗装工程と、マスキング工程と、表面塗装工程と、マスキング材除去工程と、を有している。 Patent Document 1 discloses a finishing method for a cement composition (base material) having groove-like joints provided on its surface. This method includes a joint painting process, a masking process, a surface painting process, and a masking material removal process.

特開２０１５－１４０５２２号公報Japanese Patent Application Publication No. 2015-140522

特許文献１には、基材として押出成形セメント板を用いてもよい旨が記載されている（段落［００３７］）。押出成形セメント板は、押出成形機によりセメント成形材料を押し出しながら、ローラーで化粧目地（以下、単に「目地」といい、縦目地及び横目地などがある）を設けた後、養生硬化して得られる。ローラーの外周には、周方向に横目地用の凸部が設けられ、回転軸方向に縦目地用の凸部が設けられている。 Patent Document 1 describes that an extruded cement board may be used as the base material (paragraph [0037]). Extruded cement boards are made by extruding cement molding material using an extruder, creating decorative joints (hereinafter simply referred to as "joints", including vertical joints, horizontal joints, etc.) using rollers, and then curing and hardening. It will be done. On the outer periphery of the roller, a protrusion for horizontal joints is provided in the circumferential direction, and a protrusion for vertical joints is provided in the direction of the rotation axis.

しかしながら、ローラーで目地を設けながら押出成形を行う場合、例えば、押出成形セメント板の幅方向に設計上延びる目地（縦目地）が幅方向に対して若干傾斜して延びることがある。 However, when extrusion molding is performed while providing joints with rollers, for example, the joints (vertical joints) that are designed to extend in the width direction of the extrusion-molded cement board may extend at a slight angle with respect to the width direction.

本発明者は、上記の原因の１つは、セメント成形材料を押し出す場合の幅方向における流速の違いにあると考える。すなわち、押出成形機によりセメント成形材料を所定幅で押し出す場合、幅方向（押し出す方向に対して垂直な方向）における中央部の流れが、幅方向における両端部の流れに比べて速くなりやすい。つまり、所定幅のセメント成形材料の幅方向の中央部から両端部に向かうほど流速が遅くなる。これに起因して特に押出成形セメント板の幅方向における目地が押出成形セメント板の幅方向に対して若干傾斜して見えるおそれがある。 The present inventor believes that one of the above causes is the difference in flow velocity in the width direction when extruding the cement molding material. That is, when extruding cement molding material in a predetermined width using an extrusion molding machine, the flow at the center in the width direction (direction perpendicular to the extrusion direction) tends to be faster than the flow at both ends in the width direction. In other words, the flow velocity becomes slower as it goes from the center in the width direction of the cement molding material having a predetermined width toward both ends. Due to this, there is a possibility that the joints in the width direction of the extrusion-molded cement board in particular may appear to be slightly inclined with respect to the width direction of the extrusion-molded cement board.

押出成形セメント板が単色で塗装されている場合には、目地が傾斜して見えることはあまりないが、押出成形セメント板が２色以上で塗装されている場合、特に目地の色と凸部表面の色とが異なる色の場合には、目地の傾斜が分かりやすくなる。この原因に関する本発明者の考えを、以下、図３及び図４を参照しながら説明する。 If the extruded cement board is painted in a single color, the joints will not often appear sloping, but if the extruded cement board is painted in two or more colors, the color of the joints and the surface of the convexities will be different. If the color is different from the color of the joint, the slope of the joint will be easier to see. The inventor's thoughts regarding this cause will be explained below with reference to FIGS. 3 and 4.

図３は、押出成形セメント板１０を塗装用ローラー７で塗装する様子を示している。実際には、押出成形セメント板１０の表面２０には複数の凸部３０が設けられているが、図３ではこれらの凸部３０については図示省略している。 FIG. 3 shows how the extruded cement board 10 is coated with the coating roller 7. In reality, a plurality of protrusions 30 are provided on the surface 20 of the extruded cement board 10, but these protrusions 30 are not shown in FIG. 3.

図３に示すように、押出成形セメント板１０の厚さは一定ではない（厚さ方向をＴ１で示す）。押出成形セメント板１０には偏肉が発生している。偏肉とは、厚さの部分的な片寄りの現象を意味する。押出成形セメント板１０の厚さは、幅方向Ｄ１の全長で一定ではなく、幅方向Ｄ１の中央部から両端部にかけて薄くなっている。図３では、押出成形セメント板１０の表面２０を誇張して図示しているが、表面２０は幅方向Ｄ１に沿って上に凸となるように湾曲している。そのため、幅方向Ｄ１の両端部に設けられる凸部３０と、幅方向Ｄ１の中央部に設けられる凸部３０とでは、塗装用ローラー７による押込み量（Ｈ１～Ｈ３）が異なる。 As shown in FIG. 3, the thickness of the extruded cement board 10 is not constant (the thickness direction is indicated by T1). The extruded cement board 10 has uneven thickness. Thickness unevenness refers to a phenomenon in which the thickness is partially uneven. The thickness of the extruded cement board 10 is not constant over the entire length in the width direction D1, but becomes thinner from the center to both ends in the width direction D1. Although the surface 20 of the extruded cement board 10 is illustrated in an exaggerated manner in FIG. 3, the surface 20 is curved upward in the width direction D1. Therefore, the pushing amount (H1 to H3) by the coating roller 7 is different between the convex portions 30 provided at both ends in the width direction D1 and the convex portion 30 provided at the center portion in the width direction D1.

ここで、図４は、凸部３０の側面３２０の傾斜角度（α，β，γ）と、塗装用ローラー７の押込み量（Ｈ１～Ｈ３）との関係を示している。より正確には、Ｈ１～Ｈ３は、塗装用ローラー７で押出成形セメント板１０を塗装する際の、塗装用ローラー７の最下点の位置を示している。 Here, FIG. 4 shows the relationship between the inclination angle (α, β, γ) of the side surface 320 of the convex portion 30 and the pushing amount (H1 to H3) of the coating roller 7. More precisely, H1 to H3 indicate the lowest point positions of the coating roller 7 when the extrusion-molded cement board 10 is coated with the coating roller 7.

例えば、側面３２０の傾斜角度がβの凸部３０が、幅方向Ｄ１に複数設けられている場合を考える。この場合において、塗装用ローラー７で押出成形セメント板１０を塗装するとき、幅方向Ｄ１の両端部から中央部にかけて、幅方向Ｄ１に設けられた凸部３０の各々に対する塗装用ローラーの押込み量は異なる。例えば、幅方向Ｄ１の両端部付近の凸部３０に対する押込み量はＨ１であり、中央部付近の凸部３０に対する押込み量はＨ３であり、両端部と中央部との間の凸部３０に対する押込み量はＨ２という具合である。このように押込み量がＨ１～Ｈ３と変化すると、この変化に伴って、色の境界線Ｑ１、Ｑ２、Ｑ３も変化する。凸部３０の意匠面３１０と側面３２０との稜線は直線状の境界線４１０であるが、この境界線４１０から色の境界線Ｑ１、Ｑ２、Ｑ３までの距離が、塗装用ローラー７の押込み量Ｈ１、Ｈ２、Ｈ３によって変化することになる。結局、この変化が大きくなるほど、目地の傾斜及びそれが与える色調の変化が分かりやすくなり、目立ってしまう。 For example, consider a case where a plurality of convex portions 30 whose side surfaces 320 have an inclination angle of β are provided in the width direction D1. In this case, when painting the extruded cement board 10 with the painting roller 7, the amount of pushing of the painting roller into each of the protrusions 30 provided in the width direction D1 from both ends to the center in the width direction D1 is different. For example, the amount of pushing into the protrusion 30 near both ends in the width direction D1 is H1, the amount of pushing into the protrusion 30 near the center is H3, and the amount of pushing into the protrusion 30 between both ends and the center is H1. The amount is H2. When the pushing amount changes from H1 to H3 in this way, the color boundary lines Q1, Q2, and Q3 also change in accordance with this change. The ridge line between the design surface 310 and the side surface 320 of the convex portion 30 is a straight boundary line 410, and the distance from this boundary line 410 to the color boundary lines Q1, Q2, and Q3 is the pushing amount of the coating roller 7. It will change depending on H1, H2, and H3. After all, the larger this change is, the easier it is to see the slope of the joint and the change in color tone it gives, and the more noticeable it becomes.

側面３２０の傾斜角度がβよりも大きいαであれば、目地の傾斜は分かりにくくなるものの、側面３２０の傾斜角度がβよりも小さいγであれば、目地の傾斜及びそれが与える色調の変化は一層分かりやすくなり、目立ってしまう。すなわち、境界線４１０から色の境界線Ｒ１、Ｒ２、Ｒ３までの距離が、塗装用ローラー７の押込み量Ｈ１、Ｈ２、Ｈ３によって大きく変化することになる。なお、上記の問題は、幅方向Ｄ１だけでなく、押出成形の押出方向（図３の紙面に垂直な方向）についても、上記と同様の問題が生じ得る。 If the inclination angle of the side surface 320 is α, which is larger than β, the inclination of the joint will be difficult to notice, but if the inclination angle of the side surface 320 is γ, which is smaller than β, the inclination of the joint and the change in color tone caused by it will be It becomes easier to understand and stands out. That is, the distance from the boundary line 410 to the color boundary lines R1, R2, and R3 changes greatly depending on the pushing amount H1, H2, and H3 of the coating roller 7. Note that the above problem may occur not only in the width direction D1 but also in the extrusion direction of extrusion molding (direction perpendicular to the paper surface of FIG. 3).

本発明の目的は、２色以上で塗装されても目地の傾斜及びそれが与える色調の変化が目立ちにくい建築板を提供することにある。 An object of the present invention is to provide a building board in which the slope of the joints and the change in color tone thereof are less noticeable even when painted with two or more colors.

本発明の一態様に係る建築板は、平板部と、前記平板部に設けられた複数の凸部と、を備える。前記複数の凸部の各々は、意匠面と、前記意匠面に隣接する側面と、を含む。前記側面に切込みが少なくとも１つ設けられている。前記意匠面を含む部分と、前記意匠面を含む部分以外の部分とが塗り分けられている。 A building board according to one aspect of the present invention includes a flat plate portion and a plurality of convex portions provided on the flat plate portion. Each of the plurality of convex portions includes a designed surface and a side surface adjacent to the designed surface. At least one notch is provided in the side surface. A portion including the designed surface and a portion other than the portion including the designed surface are painted separately.

本発明によれば、２色以上で塗装されても目地の傾斜及びそれが与える色調の変化が目立ちにくい。 According to the present invention, even when painted with two or more colors, the slope of the joint and the change in color tone caused by it are less noticeable.

図１は、本発明の一実施形態に係る建築板の要部の正面図である。FIG. 1 is a front view of essential parts of a building board according to an embodiment of the present invention. 図２は、本発明の他の実施形態に係る建築板の要部の正面図である。FIG. 2 is a front view of essential parts of a building board according to another embodiment of the present invention. 図３は、塗装前建築板を塗装用ローラーで塗装する様子を示す図である。FIG. 3 is a diagram showing how a pre-painted building board is painted with a paint roller. 図４は、凸部の側面の傾斜角度と、塗装用ローラーの押込み量との関係を示す図である。FIG. 4 is a diagram showing the relationship between the inclination angle of the side surface of the convex portion and the pushing amount of the coating roller.

１．概要
本実施形態に係る建築板１は、押出成形機によりセメント成形材料を押し出しながら、目地形成用ローラーで目地６を設け、所定の大きさに切断し、養生硬化した後、塗装用ローラー７で２色以上に塗装することにより得られる。 1. Overview The building board 1 according to the present embodiment is manufactured by forming joints 6 with a joint forming roller while extruding cement molding material using an extruder, cutting it into a predetermined size, curing and hardening, and then using a painting roller 7 to form joints 6. Obtained by painting with two or more colors.

図１に示すように、本実施形態に係る建築板１の特徴の１つは、側面３２に切込み５が少なくとも１つ設けられている点である。このように、側面３２が細かく分断されていることで、建築板１が２色以上で塗装されても目地６の傾斜及びそれが与える色調の変化が目立ちにくくなる。 As shown in FIG. 1, one of the features of the building board 1 according to this embodiment is that at least one notch 5 is provided in the side surface 32. Since the side surface 32 is finely divided in this way, even if the building board 1 is painted with two or more colors, the slope of the joint 6 and the change in color tone caused by it become less noticeable.

２．詳細
図１に本実施形態に係る建築板１を示す。建築板１は、長方形板状をなしている。図１中のＤ１及びＤ２は直交する２方向を示す。Ｄ１は、建築板１の縦方向（押出成形の幅方向、短手方向）を示し、Ｄ２は、建築板１の横方向（押出成形の押出方向、長手方向）を示す。 2. Details FIG. 1 shows a building board 1 according to this embodiment. The building board 1 has a rectangular plate shape. D1 and D2 in FIG. 1 indicate two orthogonal directions. D1 indicates the longitudinal direction of the building board 1 (width direction of extrusion molding, lateral direction), and D2 indicates the lateral direction of the building board 1 (extrusion direction of extrusion molding, longitudinal direction).

建築板１は、外壁材等の外装材として用いられ、矩形状に形成されている。図１は、建築板１の屋外側を向く面の要部を示す。以下、この面を屋外から見た状態を平面視という場合がある。 The building board 1 is used as an exterior material such as an exterior wall material, and is formed in a rectangular shape. FIG. 1 shows the main part of the surface of the building board 1 facing outdoors. Hereinafter, the state in which this surface is viewed from outside may be referred to as a planar view.

建築板１は、例えばセメント成形材料で形成されている。セメント成形材料としては、例えば、セメント及び補強繊維を主成分とする材料等の公知の材料が使用可能であり、特に限定されない。 The building board 1 is made of cement molding material, for example. As the cement molding material, for example, known materials such as materials whose main components are cement and reinforcing fibers can be used, and there is no particular limitation.

建築板１は、平板部２と、複数の凸部３と、を備える。複数の凸部３は、平板部２の表面に設けられている。平板部２と、複数の凸部３とは、一体に形成されている。 The building board 1 includes a flat plate portion 2 and a plurality of convex portions 3. The plurality of convex portions 3 are provided on the surface of the flat plate portion 2. The flat plate portion 2 and the plurality of convex portions 3 are integrally formed.

複数の凸部３は、直交する複数の目地６で区画されている。目地６は、縦目地６１と、横目地６２とを含む。このように、建築板１の表面には、複数の縦目地６１と、複数の横目地６２とがある。 The plurality of convex portions 3 are divided by a plurality of orthogonal joints 6. The joint 6 includes a vertical joint 61 and a horizontal joint 62. In this way, there are a plurality of vertical joints 61 and a plurality of horizontal joints 62 on the surface of the building board 1.

縦目地６１は、短手方向目地６１ともいい、建築板１の縦方向Ｄ１の目地であり、建築板１の短手方向に延びている。 The vertical joints 61 are also referred to as lateral joints 61, are joints in the longitudinal direction D1 of the building board 1, and extend in the lateral direction of the building board 1.

横目地６２は、長手方向目地６２ともいい、建築板１の横方向Ｄ２の目地であり、建築板１の長手方向に延びている。長手方向目地６２の少なくとも１本は、建築板１の表面の長手方向全体に亘って連続して延びている。 好ましくは、縦目地６１及び横目地６２の少なくともいずれかは、直線上に連なっていない。図１では、縦目地６１は、一本の直線上に連なっていない。横目地６２は、一本の直線上に連なっている。より具体的には、複数の横目地６２が縦方向に間隔をあけて互いにほぼ平行に延びており、各横目地６２は横方向全体にわたって直線上に連続して延びている。また、各横目地６２から横方向に間隔をあけて複数の縦目地６１が縦方向両側に延びている。そして、上記の「縦目地６１は、一本の直線上に連なっていない」とは、横目地６２から縦方向両側に延びる縦目地６１の横方向の位置が一致しないことをいう。このような目地配置によって、図１に示すように、複数の凸部３が横方向に直線上に並んで凸部列を構成し、この凸部列が縦方向に複数並んでいる。そして、縦方向に隣り合う凸部列において、一方の凸部列内の縦目地６１の横方向の位置と他方の凸部列内の縦目地６１の横方向の位置とが一致していない。ここで、「縦目地６１の横方向の位置」とは、縦目地６１の幅方向中心線の位置をいい、縦方向に隣り合う縦目地６１が横方向において一部重なる場合も含む。このように、縦目地６１が一本の直線上に連なっておらず、縦方向において分断されていることによって、一本の直線上に連なっている場合に比べて、縦目地６１の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。 The lateral joints 62 are also referred to as longitudinal joints 62, are joints in the lateral direction D2 of the building board 1, and extend in the longitudinal direction of the building board 1. At least one of the longitudinal joints 62 extends continuously over the entire surface of the building board 1 in the longitudinal direction. Preferably, at least one of the vertical joints 61 and the horizontal joints 62 is not continuous on a straight line. In FIG. 1, the vertical joints 61 are not continuous on a single straight line. The horizontal joints 62 are continuous on a single straight line. More specifically, a plurality of horizontal joints 62 extend substantially parallel to each other at intervals in the vertical direction, and each horizontal joint 62 extends continuously in a straight line throughout the horizontal direction. Further, a plurality of vertical joints 61 extend from each horizontal joint 62 at intervals in the horizontal direction on both sides in the vertical direction. The above expression "the vertical joints 61 are not continuous on a single straight line" means that the horizontal positions of the vertical joints 61 extending from the horizontal joints 62 to both sides in the vertical direction do not match. With such a joint arrangement, as shown in FIG. 1, a plurality of protrusions 3 are lined up horizontally in a straight line to form a protrusion row, and a plurality of protrusion rows are arranged vertically. In the vertically adjacent rows of projections, the horizontal position of the vertical joint 61 in one row of projections does not match the horizontal position of the vertical joint 61 in the other row of projections. Here, the "horizontal position of the vertical joint 61" refers to the position of the center line in the width direction of the vertical joint 61, and includes cases where vertical joints 61 that are adjacent in the vertical direction partially overlap in the horizontal direction. In this way, since the vertical joints 61 are not connected in a straight line but are divided in the vertical direction, the inclination of the vertical joints 61 and its The change in color tone caused by this becomes even less noticeable.

図示省略しているが、縦目地６１が一本の直線上に連なり、横目地６２が一本の直線上に連なっていなくてもよい。この場合には、横目地６２が一本の直線上に連なっていないことによって、一本の直線上に連なっている場合に比べて、横目地６２の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。 Although not shown, the vertical joints 61 do not necessarily have to be continuous in a straight line, and the horizontal joints 62 do not have to be continuous in a straight line. In this case, since the horizontal joints 62 are not continuous on a single straight line, the slope of the horizontal joints 62 and the change in color tone caused by it are more noticeable compared to the case where the horizontal joints 62 are continuous on a single straight line. It becomes difficult.

同様に図示省略しているが、縦目地６１及び横目地６２の両方が直線上に連なっていなくてもよい。この場合には、目地６の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。なお、この場合には、複数の凸部３の各々の大きさ（平面視での大きさ）が異なり得る。 Similarly, although not shown, both the vertical joints 61 and the horizontal joints 62 do not need to be continuous on a straight line. In this case, the slope of the joint 6 and the change in color tone caused by it become even less noticeable. In addition, in this case, the size of each of the plurality of convex portions 3 (size in plan view) may be different.

複数の凸部３の各々は、意匠面３１と、側面３２と、を含む。意匠面３１は、矩形状の面である。図１では、意匠面３１を横長の矩形状に図示しているが、これには限定されない。意匠面３１には自然石等の様々なデザインが施されている。なお、意匠面３１と平板部２の表面との距離が目地６の深さに相当する。 Each of the plurality of convex portions 3 includes a design surface 31 and a side surface 32. The design surface 31 is a rectangular surface. Although the design surface 31 is illustrated in a horizontally long rectangular shape in FIG. 1, it is not limited to this. The design surface 31 is decorated with various designs such as natural stones. Note that the distance between the design surface 31 and the surface of the flat plate portion 2 corresponds to the depth of the joint 6.

側面３２は、意匠面３１に隣接している。側面３２は、意匠面３１の周囲に位置する。図１では、側面３２は、意匠面３１の四辺に位置している。側面３２は、平板部２の表面（目地６の底面）に対して傾斜していてもよいし、垂直であってもよい。図１では、側面３２は、目地６の底面に対して傾斜しており、傾斜面となっている。なお、目地６の幅は、隣り合う凸部３，３において、平板部２の表面と側面３２との境界線同士の距離に相当する。 The side surface 32 is adjacent to the design surface 31. The side surface 32 is located around the design surface 31. In FIG. 1, the side surfaces 32 are located on the four sides of the design surface 31. The side surface 32 may be inclined or perpendicular to the surface of the flat plate portion 2 (the bottom surface of the joint 6). In FIG. 1, the side surface 32 is inclined with respect to the bottom surface of the joint 6, and is an inclined surface. Note that the width of the joint 6 corresponds to the distance between the boundaries between the surface of the flat plate portion 2 and the side surface 32 in the adjacent convex portions 3, 3.

複数の凸部３の各々について、意匠面３１と側面３２との境界線４は、少なくとも直線状の境界線４１を含む。 For each of the plurality of convex parts 3, the boundary line 4 between the design surface 31 and the side surface 32 includes at least a linear boundary line 41.

意匠面３１を含む部分と、意匠面３１を含む部分以外の部分とは塗り分けられている。「意匠面３１を含む部分」とは、少なくとも意匠面３１を含み、側面３２の一部も含み得る。「意匠面３１を含む部分以外の部分」とは、主として目地６の底面であり、側面３２の一部も含み得る。建築板１が単色で塗装されると、目地６が傾斜して見えることはあまりないが、本実施形態では、建築板１が２色以上で塗装されても、次のようにして目地６の傾斜及びそれが与える色調の変化を目立ちにくくしている。 A portion including the designed surface 31 and a portion other than the portion including the designed surface 31 are painted separately. The "portion including the designed surface 31" includes at least the designed surface 31 and may also include a part of the side surface 32. “A portion other than the portion including the design surface 31” mainly refers to the bottom surface of the joint 6, and may also include a portion of the side surface 32. When the building board 1 is painted in a single color, the joints 6 rarely appear slanted, but in this embodiment, even if the building board 1 is painted in two or more colors, the joints 6 are This makes the slope and the change in color tone caused by it less noticeable.

すなわち、本実施形態に係る建築板１においては、側面３２に切込み５が少なくとも１つ設けられている。このようにして、側面３２を分断することで、目地６の傾斜及びそれが与える色調の変化を目立ちにくくすることができる。なお、切込み５は、目地形成用ローラーで目地６を設ける場合に、目地６と一緒に設けることができる。 That is, in the building board 1 according to this embodiment, at least one notch 5 is provided in the side surface 32. By dividing the side surface 32 in this way, the slope of the joint 6 and the change in color tone caused by the slope can be made less noticeable. Note that the cuts 5 can be provided together with the joints 6 when the joints 6 are provided with a joint forming roller.

複数の凸部３が、複数の短手方向目地６１と長手方向目地６２とによって区切られて形成されている場合には、凸部３には、短手方向を横切るように複数の切込み５がある。このようにして、目地６の傾斜及びそれが与える色調の変化を目立ちにくくすることができる。 When the plurality of convex portions 3 are formed separated by a plurality of lateral joints 61 and longitudinal joints 62, a plurality of cuts 5 are formed in the convex portion 3 so as to cross the lateral direction. be. In this way, the slope of the joint 6 and the change in color tone caused by it can be made less noticeable.

好ましくは、図１に示すように、直線状の境界線４１に切込み５が少なくとも１つ設けられている。そして、切込み５が、直線状の境界線４１を横切るように形成されている。このようにして、直線状の境界線４１を複数の区間に分断することで、単一の区間である場合に比べて目地６の傾斜及びそれが与える色調の変化を目立ちにくくすることができる。 Preferably, as shown in FIG. 1, at least one notch 5 is provided in the linear boundary line 41. The cut 5 is formed to cross the linear boundary line 41. By dividing the linear boundary line 41 into a plurality of sections in this way, the slope of the joint 6 and the change in color tone caused by it can be made less noticeable than when it is a single section.

好ましくは、図２に示すように、切込み５が、意匠面３１を含む部分（図２のドット模様の部分）と、意匠面３１を含む部分以外の部分との塗り分けられた境界線８を横切るように形成されている。これにより、塗り分けの境界線８の分断が強調されるので、目地６の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。特に凸部３の側面３２の傾斜角度が低い場合であっても（例えば図４の傾斜角度がγの場合）、切込み５があることで、目地６の傾斜及びそれが与える色調の変化が目立ちにくくなる。 Preferably, as shown in FIG. 2, the cut 5 forms a painted boundary line 8 between a portion including the designed surface 31 (the dot pattern portion in FIG. 2) and a portion other than the portion including the designed surface 31. It is formed to cross. As a result, the division of the boundary line 8 between the different colors is emphasized, so that the inclination of the joint 6 and the change in color tone caused by it become even less noticeable. In particular, even when the inclination angle of the side surface 32 of the convex portion 3 is low (for example, when the inclination angle is γ in FIG. 4), the inclination of the joint 6 and the change in color tone caused by it are noticeable due to the cut 5. It becomes difficult.

さらに好ましくは、切込み５が、側面３２から意匠面３１に向かうほど幅が狭くなる形状をなしている。これにより、凸部３の質感が自然石等の質感に近くなる。 More preferably, the notch 5 has a shape that becomes narrower from the side surface 32 toward the designed surface 31. Thereby, the texture of the convex portion 3 becomes close to that of natural stone or the like.

矩形状の意匠面３１の少なくとも一辺において、切込み５が複数設けられている。切込み５の数は特に限定されない。好ましくは、複数の切込み５が不規則な間隔で設けられている。複数の切込み５が規則的な間隔で設けられていると、凸部３に人工的な外観を付与し得るが、複数の切込み５が不規則な間隔で設けられていることにより、凸部３の質感が自然石等の質感に更に近くなる。 A plurality of notches 5 are provided on at least one side of the rectangular design surface 31. The number of cuts 5 is not particularly limited. Preferably, a plurality of cuts 5 are provided at irregular intervals. If a plurality of notches 5 are provided at regular intervals, it may give an artificial appearance to the convex portion 3, but if a plurality of notches 5 are provided at irregular intervals, the convex portion 3 may have an artificial appearance. The texture becomes closer to that of natural stone.

複数の切込み５の長さ（平面視での長さ）、及び複数の切込み５の角度（平面視での目地６に対する角度）を不規則にしてもよい。これにより、凸部３の質感が自然石等の質感に更に近くなる。 The lengths of the plurality of cuts 5 (length in plan view) and the angles of the plurality of cuts 5 (angle with respect to the joint 6 in plan view) may be irregular. Thereby, the texture of the convex portion 3 becomes closer to that of natural stone or the like.

上記のように切込み５が複数設けられている場合には、好ましくは、隣り合う切込み５，５同士の間隔が３０ｍｍ以下である。これにより、目地６の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。なお、隣り合う切込み５，５同士の間隔の下限値は、特に限定されないが、例えば、１ｍｍ以上である。 When a plurality of notches 5 are provided as described above, preferably the interval between adjacent notches 5 is 30 mm or less. This makes the slope of the joint 6 and the change in color tone caused by it even less noticeable. Note that the lower limit of the interval between adjacent notches 5, 5 is not particularly limited, but is, for example, 1 mm or more.

３．変形例
上記実施形態では、凸部３が平面視で横方向に長い矩形状をなしているが、これに限定されず、平面視多角形状をなしていてもよい。この場合も、傾斜が目立ち易い縦方向又はそれに近い方向に延びる境界が分断されるように切込み５を設けるのが好ましい。 3. Modified Example In the above embodiment, the convex portion 3 has a rectangular shape that is long in the horizontal direction when viewed from above, but is not limited to this, and may have a polygonal shape when viewed from above. In this case as well, it is preferable to provide the cuts 5 so that the boundary extending in the vertical direction or a direction close to the vertical direction, where the slope is easily noticeable, is divided.

また、上記実施形態では、切込み５が意匠面３１側ほど幅狭となるように形成されているが、これに限定されず、意匠面３１側ほど幅広、または、幅が一定であってもよい。 Further, in the above embodiment, the notch 5 is formed so that it becomes narrower toward the design surface 31, but it is not limited to this, and may be wider toward the design surface 31, or may have a constant width. .

また、上記実施形態では、切込み５が目地６の底面から意匠面３１に亘って形成されているが、境界４１を横断すればよく、たとえば側面３２の中途部から意匠面３１に亘って形成されていてもよい。 Further, in the above embodiment, the cut 5 is formed from the bottom of the joint 6 to the design surface 31, but it is sufficient to cross the boundary 41, for example, from the middle part of the side surface 32 to the design surface 31. You can leave it there.

４．まとめ
上記実施形態から明らかなように、本発明は、下記の態様を含む。以下では、実施形態との対応関係を明示するためだけに、符号を括弧付きで付している。 4. Summary As is clear from the above embodiments, the present invention includes the following aspects. In the following, reference numerals are given in parentheses only to clearly indicate the correspondence with the embodiments.

第１の態様に係る建築板（１）は、平板部（２）と、前記平板部（２）に設けられた複数の凸部（３）と、を備える。前記複数の凸部（３）の各々は、意匠面（３１）と、前記意匠面（３１）に隣接する側面（３２）と、を含む。前記側面（３２）に切込み（５）が少なくとも１つ設けられている。前記意匠面（３１）を含む部分と、前記意匠面（３１）を含む部分以外の部分とが塗り分けられている。 A building board (1) according to a first aspect includes a flat plate part (2) and a plurality of convex parts (3) provided on the flat plate part (2). Each of the plurality of convex portions (3) includes a designed surface (31) and a side surface (32) adjacent to the designed surface (31). At least one notch (5) is provided in said side surface (32). A portion including the designed surface (31) and a portion other than the portion including the designed surface (31) are painted differently.

この態様によれば、２色以上で塗装されても目地（６）の傾斜及びそれが与える色調の変化が目立ちにくい。 According to this aspect, even when painted with two or more colors, the slope of the joint (6) and the change in color tone caused by it are less noticeable.

第２の態様に係る建築板（１）では、第１の態様において、前記意匠面（３１）と前記側面（３２）との境界線（４）は、少なくとも直線状の境界線（４１）を含む。前記切込み（５）が、前記直線状の境界線（４１）を横切るように形成されている。 In the building board (1) according to the second aspect, in the first aspect, the boundary line (4) between the design surface (31) and the side surface (32) is at least a linear boundary line (41). include. The cut (5) is formed to cross the linear boundary line (41).

この態様によれば、目地（６）の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。 According to this aspect, the inclination of the joint (6) and the change in color tone it imparts become even less noticeable.

第３の態様に係る建築板（１）では、第１又は２の態様において、前記切込み（５）が、前記意匠面（３１）を含む部分と、前記意匠面（３１）を含む部分以外の部分との塗り分けられた境界線（８）を横切るように形成されている。 In the building board (1) according to the third aspect, in the first or second aspect, the cut (5) is formed in a portion including the designed surface (31) and a portion other than the designed surface (31). It is formed so as to cross the colored boundary line (8) with the other parts.

この態様によれば、目地（６）の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。 According to this aspect, the inclination of the joint (6) and the change in color tone it imparts become even less noticeable.

第４の態様に係る建築板（１）では、第１～３のいずれかの態様において、前記切込み（５）が、前記側面（３２）から前記意匠面（３１）に向かうほど幅が狭くなる形状をなしている。 In the building board (1) according to the fourth aspect, in any one of the first to third aspects, the width of the notch (5) becomes narrower as it goes from the side surface (32) toward the design surface (31). It has a shape.

この態様によれば、凸部（３）の質感が自然石等の質感に近くなる。 According to this aspect, the texture of the convex portion (3) becomes close to that of natural stone or the like.

第５の態様に係る建築板（１）では、第１～４のいずれかの態様において、前記切込み（５）が複数設けられている。前記複数の切込み（５）が不規則な間隔で設けられている。 In the building board (1) according to the fifth aspect, a plurality of the notches (5) are provided in any one of the first to fourth aspects. The plurality of notches (5) are provided at irregular intervals.

この態様によれば、自然石等の質感に更に近くなる。 According to this aspect, the texture becomes closer to that of natural stone or the like.

第６の態様に係る建築板（１）では、第１～５のいずれかの態様において、前記切込み（５）が複数設けられている。隣り合う前記切込み（５）同士の間隔が３０ｍｍ以下である。 In the building board (1) according to the sixth aspect, a plurality of the notches (5) are provided in any one of the first to fifth aspects. The distance between the adjacent notches (5) is 30 mm or less.

この態様によれば、目地（６）の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。 According to this aspect, the inclination of the joint (6) and the change in color tone it imparts become even less noticeable.

第７の態様に係る建築板（１）では、第１～６のいずれかの態様において、前記建築板（１）が長方形板状をなしている。前記建築板（１）の表面には、短手方向に延びる複数の短手方向目地（６１）と、長手方向に延びる複数の長手方向目地（６２）と、がある。前記複数の凸部（３）は、前記複数の短手方向目地（６１）と長手方向目地（６２）とによって区切られて形成されている。前記長手方向目地（６２）の少なくとも１本は、前記表面の長手方向全体に亘って連続して延びている。前記凸部（３）には、短手方向を横切るように複数の前記切込み（５）がある。 In a building board (1) according to a seventh aspect, in any of the first to sixth aspects, the building board (1) has a rectangular plate shape. On the surface of the building board (1), there are a plurality of lateral joints (61) extending in the lateral direction and a plurality of longitudinal joints (62) extending in the longitudinal direction. The plurality of convex portions (3) are separated by the plurality of lateral joints (61) and longitudinal joints (62). At least one of the longitudinal joints (62) extends continuously over the entire length of the surface. The convex portion (3) has a plurality of notches (5) extending across the lateral direction.

この態様によれば、目地（６）の傾斜及びそれが与える色調の変化が更に目立ちにくくなる。 According to this aspect, the inclination of the joint (6) and the change in color tone it imparts become even less noticeable.

１ 建築板
２ 平板部
３ 凸部
３１ 意匠面
３２ 側面
４ 境界線
４１ 直線状の境界線
５ 切込み
６ 目地
６１ 縦目地（短手方向目地）
６２ 横目地（長手方向目地）
８ 境界線 1 Building board 2 Flat plate portion 3 Convex portion 31 Design surface 32 Side surface 4 Boundary line 41 Straight boundary line 5 Notch 6 Joint 61 Vertical joint (short side joint)
62 Horizontal joint (longitudinal joint)
8 Boundary line

Claims (6)

平板部と、前記平板部に設けられた複数の凸部と、を備え、
前記複数の凸部の各々は、意匠面と、前記意匠面に隣接する側面と、を含み、
前記側面に切込みが少なくとも１つ設けられており、
前記切込みにより前記側面が複数の区間に分断されており、
前記意匠面を含む部分と、前記意匠面を含む部分以外の部分とが塗り分けられており、
前記複数の凸部が目地で区画され、
前記目地の底面が前記平板部の表面であり、
前記切込みが前記目地の前記底面から前記意匠面に亘って形成されている、
建築板。 comprising a flat plate part and a plurality of convex parts provided on the flat plate part,
Each of the plurality of convex portions includes a designed surface and a side surface adjacent to the designed surface,
At least one notch is provided on the side surface,
The side surface is divided into a plurality of sections by the cut,
A part including the designed surface and a part other than the part including the designed surface are painted separately,
The plurality of convex portions are divided by joints,
The bottom surface of the joint is the surface of the flat plate part,
the cut is formed from the bottom surface of the joint to the designed surface ;
Architectural board. 前記意匠面と前記側面との境界線は、少なくとも直線状の境界線を含み、
前記切込みが、前記直線状の境界線を横切るように形成されている、
請求項１に記載の建築板。 The boundary line between the design surface and the side surface includes at least a linear boundary line,
the notch is formed to cross the linear boundary line;
The building board according to claim 1. 前記切込みが、前記意匠面を含む部分と、前記意匠面を含む部分以外の部分との塗り分けられた境界線を横切るように形成されている、
請求項１又は２に記載の建築板。 The cut is formed to cross a painted boundary line between a portion including the designed surface and a portion other than the portion including the designed surface,
The building board according to claim 1 or 2. 前記切込みが、前記側面から前記意匠面に向かうほど幅が狭くなる形状をなしている、
請求項１～３のいずれか１項に記載の建築板。 The notch has a shape whose width becomes narrower as it goes from the side surface toward the design surface.
The building board according to any one of claims 1 to 3. 前記切込みが複数設けられ、
前記複数の切込みが不規則な間隔で設けられている、
請求項１～４のいずれか１項に記載の建築板。 A plurality of the notches are provided,
the plurality of cuts are provided at irregular intervals;
The building board according to any one of claims 1 to 4. 前記建築板が長方形板状をなし、
前記建築板の表面には、短手方向に延びる複数の短手方向目地と、長手方向に延びる複数の長手方向目地と、があり、
前記複数の凸部は、前記複数の短手方向目地と長手方向目地とによって区切られて形成されており、
前記長手方向目地の少なくとも１本は、前記表面の長手方向全体に亘って連続して延びており、
前記凸部には、短手方向を横切るように複数の前記切込みがある、
請求項１～５のいずれか１項に記載の建築板。 The building board has a rectangular board shape,
The surface of the building board has a plurality of lateral joints extending in the lateral direction and a plurality of longitudinal joints extending in the longitudinal direction,
The plurality of convex portions are formed separated by the plurality of lateral joints and longitudinal joints,
At least one of the longitudinal joints extends continuously over the entire longitudinal direction of the surface,
The convex portion has a plurality of the notches extending across the lateral direction,
The building board according to any one of claims 1 to 5 .
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Citations (7)

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JP2002038691A (en) 2000-07-27 2002-02-06 Nichiha Corp Building board
JP2002336770A (en) 2001-05-16 2002-11-26 Nichiha Corp Colored building board and manufacturing method therefor
JP2002364152A (en) 2001-06-12 2002-12-18 Misawa Homes Co Ltd Tile panel and exterior wall panel
JP2004316240A (en) 2003-04-16 2004-11-11 Nichiha Corp Building board
JP2006097269A (en) 2004-09-28 2006-04-13 Nichiha Corp Building board and method of coating the same
JP2015010425A (en) 2013-07-01 2015-01-19 ケイミュー株式会社 Covering member
JP2015105520A (en) 2013-11-29 2015-06-08 旭トステム外装株式会社 Wall panel

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JP2002038691A (en) 2000-07-27 2002-02-06 Nichiha Corp Building board
JP2002336770A (en) 2001-05-16 2002-11-26 Nichiha Corp Colored building board and manufacturing method therefor
JP2002364152A (en) 2001-06-12 2002-12-18 Misawa Homes Co Ltd Tile panel and exterior wall panel
JP2004316240A (en) 2003-04-16 2004-11-11 Nichiha Corp Building board
JP2006097269A (en) 2004-09-28 2006-04-13 Nichiha Corp Building board and method of coating the same
JP2015010425A (en) 2013-07-01 2015-01-19 ケイミュー株式会社 Covering member
JP2015105520A (en) 2013-11-29 2015-06-08 旭トステム外装株式会社 Wall panel

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