JP7429148B2 - building board - Google Patents

Description

TECHNICAL FIELD The present invention relates to an architectural board material, that is, a building board that can be used for exterior finishing and interior finishing of buildings.

BACKGROUND ART Building boards having a predetermined design surface, such as ceramic siding boards and metal siding boards, are sometimes used as architectural boards (wall panels) for constructing, for example, the outer walls and inner walls of buildings. When constructing a wall using building boards, multiple building boards are joined together vertically and horizontally. The design surfaces of such architectural boards include a design surface with a brick-like pattern, a design surface with a tile-like pattern, a design surface with a masonry-like pattern, and the like. Techniques related to such building boards are described, for example, in Patent Documents 1 and 2 below.

Japanese Patent Application Publication No. 2012-107470 Japanese Patent Application Publication No. 2015-140607

The above-mentioned building boards are required to have inconspicuous deviations at the joints when a plurality of boards are jointed together.

The present invention was devised under these circumstances, and its purpose is to provide a building board suitable for suppressing noticeable deviations at the joints when a plurality of building boards are jointed together. Our goal is to provide the following.

A building board provided by the present invention includes a pair of first edge portions extending in a first direction, a pair of second edge portions extending in a second direction intersecting the first direction, and a pair of first edge portions. and a design surface whose outer shape is defined by the portion and the pair of second edge portions. The first direction and the second direction are preferably orthogonal.

The design surface has at least one first groove. The at least one first graben crosses in the second direction between the pair of first edge portions extending in the first direction, and divides the designed surface into a plurality of first divisions aligned in the first direction. The design surface has at least one second graben for each first section. The at least one second graben crosses the first section in the first direction and divides the first section into a plurality of second sections arranged in the second direction. The design surface includes, for each second division, at least one third graben that crosses the second division in the second direction, and at least one fourth graben that crosses the second division in the first direction; It has a plurality of design protrusions whose outline shape is at least partially defined by the third and fourth grooves. In terms of design, in two adjacent first sections, the second graben of one first section and the second graben of the other first section are misaligned in the second direction.

In this building board having such a configuration, a three-dimensional checkered pattern can be expressed by the first groove, the second groove, the third groove, the fourth groove, and the design convex portion.

When constructing a wall using this building board, a plurality of these building boards are joined together vertically (vertically) and horizontally (horizontally). Specifically, the two main building boards are joined together, for example, in the vertical direction via their first edges. A joint groove may be formed at the joint location (first joint location) as a through joint extending in the first direction. Furthermore, the two main building boards are joined together, for example, in the left-right direction via their second edges. A joint groove may be formed at the joint location (second joint location) as a through joint extending in the second direction.

As mentioned above, the designed surface of this building board has a first groove, a second groove, a third groove, and a fourth groove (these grooves are formed on the designed surface). The first joint groove crosses between the pair of first edges in the second direction. Such a first joint groove is a joint groove (a second joint groove) that may be formed at the joint location (second joint location) when two main building boards are joined via their second edges. It looks similar to the first graben (extending in the second direction).

In terms of the design of this building board, the second graben of one of the first compartments and the second graben of the other first compartment in two adjacent first compartments with the first graben in between are defined as the above-mentioned. , both extend in the first direction but are shifted in position from each other in the second direction. The configuration in which the second joint groove located on the opposite side with respect to the first joint groove, which is similar to the joint groove that may be formed at the second joint location, is shifted in the second direction is similar to the second joint groove described above. When a deviation occurs in the second direction between adjacent building boards at a joint location and a deviation occurs in the second direction between the design surfaces of adjacent building boards, this is suitable for suppressing the deviation from becoming noticeable. Preferably, among the design projections in the second section located along the first edge, the design projection with the smallest length in the second direction is not located along the first edge. Such a configuration prevents the gap from being noticeable when a gap occurs in the first direction between the adjacent building boards at the first joint point described above and a gap occurs in the first direction between the design surfaces of the adjacent building boards. suitable for suppressing things. The longer the design protrusion located along the first edge extending in the first direction becomes longer in the second direction, the less noticeable the positional shift tends to be at the location along the first edge. . Preferably, among the design projections in the second section located along the second edge, the design projection with the smallest length in the first direction is not located along the second edge. Such a configuration prevents the deviation from being noticeable when a deviation in the second direction occurs between adjacent building boards at the second joint point described above and a deviation in the second direction occurs between the design surfaces of adjacent building boards. suitable for suppressing things. The longer the design protrusion located along the second edge extending in the second direction becomes longer in the first direction, the less noticeable the positional shift will tend to be at the location along the second edge. .

As described above, the building board of the present invention is suitable for suppressing noticeable deviations at the joint location in a construction state in which a plurality of boards are joined together.

Preferably, in two second divisions adjacent in the first direction, the fourth graben of one second division and the fourth graben of the other second division are shifted in position in the second direction. Preferably, the second groove extending to one of the pair of second edge portions and the second groove extending to the other of the pair of second edge portions are shifted in position in the second direction. Preferably, the fourth groove extending to one of the pair of second edge portions and the fourth groove extending to the other of the pair of second edge portions are shifted in position in the second direction. These positional deviation configurations of the joint grooves are used when a deviation in the second direction occurs between adjacent building boards at the second joint point mentioned above, and a deviation in the second direction occurs between the design surfaces of the adjacent building boards. Suitable for suppressing noticeable deviations.

Preferably, in two second divisions that are adjacent to each other in the second direction via the second graben, the third graben of one of the second divisions and the third graben of the other second division are arranged in the first direction. The position is shifted.

Preferably, the third groove extending to one of the pair of first edge portions and the third groove extending to the other of the pair of first edge portions are shifted in position in the first direction. These positional deviation configurations of the joint grooves are used when a deviation in the first direction occurs between the adjacent building boards at the first joining point and a deviation in the first direction occurs between the design surfaces of the adjacent building boards. Suitable for suppressing noticeable deviations.

Preferably, the first graben and the second graben are deeper than the third graben and the fourth graben. Such a configuration is suitable for making it easier to visually recognize the first division and the second division whose outline shapes are defined by the first groove and the second groove in the design aspect.

Preferably, the designed surface has a shallow graben and a deeper deep graben as the third graben in at least one second section.

Preferably, the designed surface has a shallow graben and a deeper deep graben as the fourth graben in at least one second section. These configurations are useful for improving the design quality on the design surface, and are suitable for, for example, imparting variations in the degree of unevenness of the three-dimensional checkered pattern expressed on the design surface. In addition, such unevenness in the design surface of this building board is similar to the step that is formed when there is a deviation in the thickness direction between adjacent building boards at the first and second joint points mentioned above. Therefore, it is useful to suppress noticeable deviations in the thickness direction between adjacent building boards at joint locations.

Preferably, the shallow graben has a larger groove width than the deep graben. Such a configuration is useful for improving design quality.

FIG. 1 is a plan view of a building board according to one embodiment of the present invention. FIG. 2 is a partially enlarged plan view of FIG. 1; FIG. 2 is a side view (partially omitted side view) of a second edge portion of the building board shown in FIG. 1 extending in the second direction. FIG. 2 is a side view (partially omitted side view) of a first edge extending in a first direction of the building board shown in FIG. 1; (a) is a sectional view of the first graben. (b) is a sectional view of the second graben. (c) is a cross-sectional view of a shallow graben as a third graben. (d) is a cross-sectional view of a deep graben as a third graben. (e) is a cross-sectional view of a shallow graben as a fourth graben. (f) is a cross-sectional view of a deep graben as a fourth graben. It is a sectional view of the first edge part and its vicinity in a state where two building boards are joined together via their first edge parts. It is a top view of the said 1st edge part and its vicinity in the state where two building boards were joined via those 1st edge parts. It is a sectional view of the second edge part and its vicinity in a state where two building boards are joined together via their second edge parts. It is a top view of the said 2nd edge part and its vicinity in the state where two building boards were joined via those 2nd edge parts. 2 shows a wall construction structure using a plurality of building boards according to the present invention.

1 to 4 represent a building board X according to one embodiment of the present invention. FIG. 1 is a plan view of the building board X. FIG. 2 is a partially enlarged plan view of the building board X. FIG. 3 is a side view (partially omitted side view) of the building board X. FIG. 4 is another side view (partially omitted side view) of the building board X.

The building board X is a building board material for configuring, for example, an outer wall or an inner wall of a building, and as shown in FIG. 1, it has a pair of first edge parts E1 and E2 extending in a first direction D1, It includes a pair of second edge portions E3 and E4 extending in a second direction D2 intersecting the first direction, and a design surface S. The first direction D1 and the second direction D2 are orthogonal in this embodiment. The design surface S has an outer shape defined by first edge portions E1, E2 and second edge portions E3, E4. When constructing a wall using such building boards X, a plurality of building boards X are joined together in the vertical direction (vertical direction) and the horizontal direction (horizontal direction).

The dimension of the building board X in the first direction D1 is, for example, 910 to 3030 mm. The dimension of the building board X in the second direction D2 is, for example, 160 to 910 mm. The thickness of the building board X is, for example, 14 to 26 mm. Moreover, the building board X is a cement board, a concrete board, or a wood board.

The design surface S of the building board (a case where the design surface S has a plurality of first grooves 10 is illustrated as an example). The first and third grooves 30 extend in the second direction D2. The second and fourth grooves 40 extend in the first direction D1. The first to fourth grooves 10, 20, 30, and 40 are grooves formed to form pseudo grooves on the design surface S of the building board X. On the design surface S, a three-dimensional checkered pattern is expressed by the first to fourth grooves 10, 20, 30, 40 and the design convex portion 50. Specifically, it is as follows.

In the designed surface S, at least one first groove 10 crosses in the second direction D2 between the pair of first edge portions E1 and E2 extending in the first direction D1, and It is divided into a plurality of first sections R1 arranged in the direction D1. The design surface S includes, between the first edge portions E1 and E2, at least a first section R1 between one of the second edge portions E3 and the first groove 10, and a first section R1 between the first edge portion E3 and the first groove 10 and the other side. It has a first section R1 between the second edge E4 and the second edge E4. When the designed surface S has a plurality of first grooves 10, the designed surface S further includes at least one first section R1 between adjacent first grooves 10.

The first groove 10 is a through joint that extends from one first edge E1 to the other first edge E2. The first graben 10 is formed by, for example, two building boards X being joined together in a continuous manner via the first edge E1 of one building board In this state, it is arranged so as to form part of a single through joint extending across the two building boards X.

As shown in FIG. 5(a), the first groove 10 has a cross-sectional shape that gradually widens from the groove bottom Gb to the open end Gt. The width w1 (length in the first direction D1) of the groove bottom Gb of the first graben 10 is, for example, 2 to 8 mm, preferably 3 to 5 mm. The depth d1 of the first graben 10 is, for example, 2 to 8 mm, preferably 3 to 5 mm. Preferably, the first graben 10 is deeper than the third graben 30 and the fourth graben 40.

In addition, in the first graben 10, the inclination angle θ between the side wall Gs and the groove bottom Gb is, for example, 45 to 75 degrees, preferably 55 to 65 degrees (the second to fourth grabens 20, 30 , 40). From the viewpoint of design, it is preferable that the inclination angle θ of the side wall Gs with respect to the groove bottom Gb is the same in the first to fourth grooves 10, 20, 30, and 40.

The designed surface S has at least one second groove 20 for each first section R1 (the case where the designed surface S has a plurality of second grooves 20 for each first section R1 is illustrated as an example) . In each first section R1, at least one second graben 20 crosses the first section R1 in the first direction D1, and the first section R1 is connected to a plurality of second sections R2 lined up in the second direction D2. Divide into Each first division R1 includes at least a second division R2 between one first edge E1 and the second joint groove 20, and a second division R2 between the second joint groove 20 and the other first edge E2. It includes a second section R2 between. When the design surface S has a plurality of second grooves 20 within a single first section R1, the first section R1 further includes at least one second section R2 between adjacent second grooves 20.

In the first section R1 where one end of the first direction D1 is defined by the second edge E3, the second groove 20 extends from the first groove 10 closest to the second edge E3 to the second edge It extends until E3. In the first section R1 where one end of the first direction D1 is defined by the second edge E4, the second groove 20 extends from the first groove 10 closest to the second edge E4 to the second edge. It extends up to E4. In the first division R1 defined by the adjacent first grabens 10, the second grabens 20 extend from one first graben 10 to the other first grabens 10 in the adjacent first grabens 10. (i.e., crosses between the first grooves 10).

As shown in FIG. 5(b), the second groove 20 has a cross-sectional shape that gradually widens from the groove bottom Gb to the open end Gt. The width w2 (length in the second direction D2) of the groove bottom Gb of the second groove 20 is, for example, 2 to 10 mm, preferably 3 to 7 mm. The depth d2 of the second graben 20 is, for example, 2 to 10 mm, preferably 3 to 7 mm. Preferably, the second graben 20 is deeper than the third graben 30 and the fourth graben 40.

In the design surface S, the second groove 20 of one of the two adjacent first sections R1 and the second groove 20 of the other first section R1 are misaligned in the second direction D2. ing. That is, the second groove 20 does not form a through joint that crosses between the second edge portions E3 and E4 in the design surface S.

In this embodiment, the second groove 20 extending to one of the pair of second edge portions E3, E4 and the second groove 20 extending to the other are shifted in position in the second direction D2. That is, one end of the first direction D1 is defined by the second edge E3 in the second section R2, and one end of the first direction D1 is defined by the second edge E4. The position of the second graben 20 in the second section R2 is shifted in the second direction D2.

The designed surface S has at least one third groove 30 for each second section R2 (the case where the designed surface S has a plurality of third grooves 30 for each second section R2 is illustrated) . In each second section R2, at least one third groove 30 crosses the second section R2 in the second direction D2. When the design surface S has a plurality of third grabens 30 within a single second section R2, the plurality of third grabens 30 preferably include a shallow graben 31 and a deeper deep graben 32. including. The shallow graben 31 is defined as the trench with the smallest groove depth among the third grabens 30. It is preferable that the designed surface S has such a shallow graben 31 and a deep graben 32 in at least one second section R2.

In the second section R2 where one end of the second direction D2 is defined by the first edge E1, the third groove 30 extends from the second groove 20 closest to the first edge E1 to the first edge. It extends up to E1. In the second section R2 where one end of the second direction D2 is defined by the first edge E2, the third groove 30 extends from the second groove 20 closest to the first edge E2 to the first edge. It extends up to E2. In the second section R2 where both ends of the second direction D2 are defined by the adjacent second grabens 20, the third grabens 30 are connected from one second graben 20 to the other in the adjacent second grabens 20. It extends up to the second graben 20.

As shown in FIG. 5C, the shallow graben 31 as the third graben 30 has a cross-sectional shape that gradually widens from the groove bottom Gb to the open end Gt. The width w3 (length in the first direction D1) of the trench bottom Gb of the shallow graben 31 is, for example, 3 to 12 mm, preferably 4 to 9 mm. Preferably, the shallow graben 31 has a groove width larger than the deep graben 32 (the groove width refers to the width of the groove bottom Gb of the graben). The depth d3 of the shallow graben 31 is, for example, 0.8 to 5 mm, preferably 1 to 4 mm.

The deep groove 32 as the third groove 30 has a cross-sectional shape that gradually widens from the groove bottom Gb to the open end Gt, as shown in FIG. 5(d). The width w3' (length in the first direction D1) of the groove bottom Gb of the deep graben 32 is, for example, 3 to 12 mm, preferably 4 to 9 mm. The depth d3' of the deep graben 32 is, for example, 0.8 to 5 mm, preferably 1 to 4 mm, as long as it is greater than the depth d3 of the shallow graben 31.

In this embodiment, in two second divisions R2 adjacent to each other in the second direction D2 via the second joint groove 20, the third joint groove 30 of one second division R2 and the third joint groove 30 of the other second division R2 are explained. The graben 30 is preferably misaligned in the first direction D1.

In this embodiment, the third joint groove 30 extending to one of the pair of first edge portions E1, E2 and the third joint groove 30 extending to the other are shifted in position in the first direction D1. In other words, the third groove 30 in the second division R2 has one end in the second direction D2 defined by the first edge E1, and the third groove 30 in the second section R2 has one end in the second direction D2 defined by the first edge E2. The position of the third groove 30 in the second section R2 is shifted in the first direction D1.

The designed surface S has at least one fourth groove 40 for each second section R2 (the case where the designed surface S has a plurality of fourth grooves 40 for each second section R2 is illustrated) . In each second section R2, at least one fourth graben 40 crosses the second section R2 in the second direction D2. When the design surface S has a plurality of fourth grabens 40 within a single second division R2, the plurality of fourth grabens 40 preferably include a shallow graben 41 and a deeper deep graben 42. including. The shallow graben 41 is defined as the trench with the smallest trench depth among the fourth grabens 40. It is preferable that the designed surface S has such a shallow graben 41 and a deep graben 42 in at least one second section R2.

In the second section R2 where one end of the first direction D1 is defined by the second edge E3, the fourth groove 40 extends from the first groove 10 closest to the second edge E3 to the second edge It extends until E3. In the second section R2 where one end of the first direction D1 is defined by the second edge E4, the fourth groove 40 extends from the first groove 10 closest to the second edge E4 to the second edge It extends up to E4. In the second section R2 where both ends of the first direction D1 are defined by the adjacent first grabens 10, the fourth graben 40 extends from one first graben 10 to the other in the adjacent first grabens 10. It extends up to the first graben 10.

As shown in FIG. 5E, the shallow graben 41 as the fourth graben 40 has a cross-sectional shape that gradually widens from the trench bottom Gb to the open end Gt. The width w4 (length in the second direction D2) of the trench bottom Gb of the shallow graben 41 is, for example, 3 to 12 mm, preferably 4 to 9 mm. Preferably, the shallow graben 41 has a larger groove width than the deep graben 42. The depth d4 of the shallow graben 41 is, for example, 0.8 to 5 mm, preferably 1 to 4 mm.

The deep graben 42 as the fourth graben 40 has a cross-sectional shape that gradually widens from the groove bottom Gb to the open end Gt, as shown in FIG. 5(f). The width w4' (length in the second direction D2) of the groove bottom Gb of the deep graben 42 is, for example, 3 to 12 mm, preferably 4 to 9 mm. Preferably, the deep graben 42 has a groove width larger than the deep graben 42. The depth d4' of the deep graben is, for example, 0.8 to 5 mm, preferably 1 to 4 mm, as long as it is greater than the depth d4 of the shallow graben 41.

In the present embodiment, in the two second divisions R2 adjacent to each other in the first direction D1, the fourth joint groove 40 of one second division R2 and the fourth joint groove 40 of the other second division R2 are arranged in the second direction D1. The position is shifted in D2.

In the present embodiment, the fourth groove 40 extending to one of the pair of second edge portions E3, E4 and the fourth groove 40 extending to the other are shifted in position in the second direction D2. That is, one end of the first direction D1 is defined by the second edge E3, and the fourth groove 40 in the second division R2, and one end of the first direction D1 is defined by the second edge E4. The position of the fourth graben 40 in the second section R2 is shifted in the second direction D2.

The design surface S has a plurality of design protrusions 50 whose outline shape is at least partially defined by the third groove 30 and the fourth groove 40 for each second section R2. Each second section R2 includes a design convex part 50 whose one end in the first direction D1 is defined by the first joint groove 10, and the design convex part whose one end in the second direction D2 is defined by the second joint groove 20. 50 is included.

The second section R2 located along the first edge E1 includes a design protrusion 50 whose one end in the second direction D2 is defined by the first edge E1. The second section R2 located along the first edge E2 includes a design protrusion 50 whose one end in the second direction D2 is defined by the first edge E2. The second section R2 located along the second edge E3 includes a design protrusion 50 whose one end in the first direction D1 is defined by the second edge E3. Further, the second section R2 located along the second edge E4 includes a design protrusion 50 whose one end in the first direction D1 is defined by the second edge E4.

When the design surface S has a plurality of third grooves 30 (extending in the first direction D1) within a single second section R2, such second section R2 has both ends in the first direction D1 A design protrusion 50 defined by the joint groove 30 is included. Further, when the design surface S has a plurality of fourth grooves 40 (extending in the second direction D2) in a single second section R2, such a second section R2 has both ends in the second direction D2. A design convex portion 50 defined by the fourth graben 40 is included.

In the present embodiment, among the design projections 50 in the second section R2 located along the first edge E1, the design projection 50 having the smallest length in the second direction D2 is preferably located at the first edge. It is not located along the end E1. In the present embodiment, among the design projections 50 in the second section R2 located along the first edge E2, the design projection 50 having the smallest length in the second direction D2 is preferably the 1 is not located along the edge E2.

In the present embodiment, among the design projections 50 in the second section R2 located along the second edge E3, the design projection 50 having the smallest length in the first direction D1 is preferably located at the second edge. It is not located along end E3. Further, in the present embodiment, among the design projections 50 in the second section R2 located along the second edge E4, the design projection 50 having the smallest length in the first direction D1 is preferably It is not located along the second edge E4.

As shown in FIG. 3, the building board , it has a solid structure part 62 for interlocking seaming. The lower fruit structure portion 61 and the upper fruit structure portion 62 may be provided with a sealing portion for filling the gap between the members in the interlocking seam. Such a sealing portion is provided, for example, in a linear manner on the lower fruit structure portion 61. The sealing portion is made of modified silicone, for example.

The two building boards X can be joined together via their first edges E1, E2. Specifically, the first edge E1 of one building board X and the second edge E2 of the other building board X can be joined together by joining as shown in FIG. When the two building boards X are joined together via their first edges E1 and E2, as shown in FIG. A joint groove M1 is formed. The above-mentioned lower fruit structure portion 61 and upper fruit structure portion 62 are designed with dimensions and shapes in which such a joint groove M1 is formed.

In this embodiment, the building board X has flat side surfaces at its second edge portions E3 and E4, as shown in FIG. Instead of such a configuration, the building board X1 has a solid structure for interlocking seams at the second edge E3 and its vicinity, and at the second edge E4 and its vicinity. In this case, it may have a bottom structure portion for interlocking seaming.

The two building boards X can be joined together via their second edges E3, E4. Specifically, the second edge E3 of one building board X and the second edge E4 of the other building board X can be joined as shown in FIG. The second edge E3 of one building board X and the second edge E4 of the other building board X are joined together, for example, via a sealant (not shown). When the two building boards X are joined together via their second edge parts E3 and E4, as shown in FIG. is formed. In the present embodiment, the second edge portions E3 and E4 are designed with dimensions and shapes that allow such a joint groove M2 to be formed. Furthermore, when the second edge E3 of one building board X and the second edge E4 of the other building board X are joined together via a sealant (not shown), the two building boards A so-called sealing joint is formed at the joining point C2.

When constructing a wall using the building boards X having the above configuration, a plurality of building boards X are joined together in the vertical direction (vertical direction) and the horizontal direction (horizontal direction). Specifically, a plurality of building boards For example, they are joined together in the left and right direction.

FIG. 10 shows an example of a wall construction structure using a plurality of building boards X. The wall construction structure shown in FIG. 10 includes four building boards X. Specifically, in the wall construction structure, two building boards X in each row are joined together in the vertical direction (second direction D2) via their first edge parts E1 and E2, and , two building boards X in each row are joined together in the left-right direction (first direction D1) via their second edges E3, E4.

The building board X having the above-described configuration is suitable for suppressing noticeable deviations at the joints in such a construction state where a plurality of boards are joined together (i.e., in a wall construction structure using the building board X). . Specifically, it is as follows.

As described above, the design surface S of the building board X has the first graben 10, the second graben 20, the third graben 30, and the fourth graben 40. crosses between the pair of first edge portions E1 and E2 in the second direction D2. Such a first groove 10 is formed at a joint location (second joint location C2) when two building boards X are joined via their second edge portions E3 and E4. It is similar in appearance to the open graben M2 (which extends in the second direction D2 like the first graben 10).

Then, on the design surface S of the building board As described above, the joint grooves 20 both extend in the first direction D1 and are displaced from each other in the second direction D2. This configuration is such that the second joint groove 20, which is similar to the joint groove M2 formed at the second joint location C2 and is located on the opposite side of the first joint groove 10, is displaced in the second direction D2. , when a deviation occurs in the second direction D2 between the design surfaces S of adjacent building boards X at the second joining point C2, it is suitable for suppressing the deviation from becoming noticeable.

As described above, the building boards X are suitable for suppressing noticeable deviations at the joints in a construction state in which a plurality of boards are joined together.

As described above, in the building board are displaced in the second direction D2. As described above, the second groove 20 extending to one of the pair of second edge portions E3, E4 and the second groove 20 extending to the other end are misaligned in the second direction D2. As described above, the fourth graben 40 extending to one of the pair of second edge portions E3, E4 and the fourth graben 40 extending to the other end are misaligned in the second direction D2. These configurations are suitable for suppressing the deviation from becoming noticeable when a deviation occurs in the second direction D2 between the design surfaces S of adjacent building boards X at the second joining point C2.

In the building board X, as described above, in the two second sections R2 that are adjacent to each other in the second direction D2 via the second groove 20, the third joint groove 30 of one second section R2 and the second section R2 are separated from each other. The third groove 30 of R2 is preferably misaligned in the first direction D1. As described above, the third groove 30 extending to one of the pair of first edge portions E1, E2 and the third groove 30 extending to the other are shifted in position in the first direction D1. These configurations are suitable for suppressing the deviation from becoming noticeable when a deviation occurs in the first direction D1 between the design surfaces S of adjacent building boards X at the first joining point C1.

In the building board X, as described above, the first graben 10 and the second graben 20 are deeper than the third graben 30 and the fourth graben 40. Such a configuration is suitable for making it easier to visually recognize the first division R1 and the second division R2 whose outline shapes are defined by the first groove 10 and the second groove 20 on the design surface S.

As described above, the design surface S of the building board X preferably has a shallow graben 31 and a deeper deep graben 32 as the third graben 30 in at least one second section R2. As described above, the designed surface S preferably has a shallow graben 41 and a deeper deep graben 42 as the fourth graben 40 in at least one second section R2.

These configurations are useful for improving the design quality on the design surface S. For example, it is suitable for imparting variations in the degree of unevenness of the above-mentioned three-dimensional checkered pattern expressed on the design surface S. In addition, such unevenness in the design surface S of the building board X is formed when a deviation occurs in the thickness direction between adjacent building boards This is useful for suppressing noticeable deviations in the thickness direction between adjacent building boards X at the first joining location C1 and the second joining location C2.

As mentioned above, the shallow graben 31 preferably has a larger groove width than the deep graben 32. As mentioned above, the shallow graben 41 preferably has a larger groove width than the deep graben 42. These configurations are useful for improving the design quality on the design surface S.

In the building board X, as described above, among the design projections 50 in the second section R2 located along the first edge E1, the design projection 50 having the smallest length in the second direction D2 is preferably is not located along the first edge E1. Further, as described above, among the design projections 50 in the second section R2 located along the first edge E2, the design projection 50 having the smallest length in the second direction D2 is preferably the 1 is not located along the edge E2.

With these configurations, when a deviation in the first direction D1 occurs between adjacent building boards X at the first joint point C1 described above and a deviation in the first direction D1 occurs between the design surfaces S of adjacent building boards X, This is suitable for suppressing the noticeable deviation. The longer the design protrusion 50 located along the first edge E1 extending in the first direction D1 is, the longer the design protrusion 50 is located along the first edge E1, the more misalignment occurs at the location along the first edge E1. It tends to be less noticeable. The longer the design protrusion 50 located along the first edge E2 extending in the first direction D1 becomes longer in the second direction D2, the more the design protrusion 50 is positioned along the first edge E2. It tends to be less noticeable.

In the building board X, as described above, among the design projections 50 in the second section R2 located along the second edge E3, the design projection 50 having the smallest length in the first direction D1 is preferably is not located along the second edge E3. Further, as described above, among the design projections 50 in the second section R2 located along the second edge E4, the design projection 50 having the smallest length in the first direction D1 is preferably It is not located along the second edge E4.

With these configurations, when a deviation in the second direction D2 occurs between adjacent building boards X at the second joining point C2 and a deviation in the second direction D2 occurs between the design surfaces S of the adjacent building boards X, This is suitable for suppressing the noticeable deviation. The longer the design protrusion 50 located along the second edge E3 extending in the second direction D2 is, the longer the design protrusion 50 is located along the second edge E3, the more misalignment occurs at the location along the second edge E3. It tends to be less noticeable. The longer the design protrusion 50 located along the second edge E4 extending in the second direction D2 is, the longer the design protrusion 50 is located along the second edge E4, the more misalignment occurs at the location along the second edge E4. It tends to be less noticeable.

X Building board E1, E2 First edge E3, E4 Second edge S Design surface D1 First direction D2 Second direction R1 First division R2 Second division 10 First groove 20 Second groove 30 3rd graben 31, 41 Shallow graben 32, 42 Deep graben 40 4th graben 50 Design convex part

Claims (12)

a pair of first edge portions extending in a first direction;
a pair of second edge portions extending in a second direction intersecting the first direction;
A building board comprising: a design surface whose outer shape is defined by the pair of first edge portions and the pair of second edge portions,
The design surface is
at least one first groove that cuts across the pair of first edge portions in the second direction and divides the designed surface into a plurality of first divisions aligned in the first direction;
at least one second graben for each first section, which crosses the first section in the first direction and divides the first section into a plurality of second sections lined up in the second direction;
at least one third graben for each second section, which crosses the second section in the second direction;
and at least one fourth graben for each second division, which crosses the second division in the first direction, and
Each of the second divisions has a plurality of design convex portions whose outline shape is at least partially defined by the third and fourth grooves,
In two adjacent first divisions, the second graben of one first division and the second graben of the other first division are misaligned in the second direction ,
Among the design projections in the second section located along the first edge, the design projection with the smallest length in the second direction is not located along the first edge. a pair of first edge portions extending in a first direction;
a pair of second edge portions extending in a second direction intersecting the first direction;
A building board comprising: a design surface whose outer shape is defined by the pair of first edge portions and the pair of second edge portions,
The design surface is
at least one first groove that cuts across the pair of first edge portions in the second direction and divides the designed surface into a plurality of first divisions aligned in the first direction;
at least one second graben for each first section, which crosses the first section in the first direction and divides the first section into a plurality of second sections lined up in the second direction;
at least one third graben for each second section, which crosses the second section in the second direction;
and at least one fourth graben for each of the second divisions, which crosses the second division in the first direction, and
Each of the second divisions has a plurality of design convex portions whose outline shape is at least partially defined by the third and fourth grooves,
In two adjacent first divisions, the second graben of one first division and the second graben of the other first division are misaligned in the second direction,
Among the design projections in the second section located along the second edge, the design projection with the smallest length in the first direction is not located along the second edge. Among the design projections in the second section located along the second edge, the design projection with the smallest length in the first direction is not located along the second edge. Architectural board described in . The fourth graben of one of the two second divisions adjacent to the first direction and the fourth graben of the other second division are misaligned in the second direction. Architectural board described in any one of 1 to 3. According to any one of claims 1 to 4, wherein the second graben leading to one of the pair of second edge portions and the second graben leading to the other of the pair of second edge portions are shifted in position in the second direction. Architectural board. According to any one of claims 1 to 5, wherein a fourth graben leading to one of the pair of second edge portions and a fourth graben leading to the other of the pair of second edge portions are shifted in position in the second direction. Architectural board. The third graben of one of the two second divisions adjacent to the second direction and the third graben of the other second division are misaligned in the first direction. Architectural board described in any one of 1 to 6. A third graben leading to one of the pair of first edge portions and a third graben leading to the other of the pair of first edge portions are misaligned in the first direction, according to any one of claims 1 to 7. Architectural board. The building board according to any one of claims 1 to 8 , wherein the first graben and the second graben are deeper than the third graben and the fourth graben . The building board according to any one of claims 1 to 9, wherein the designed surface has a shallow graben and a deeper deep graben as the third graben in at least one second section. . The building board according to any one of claims 1 to 10, wherein the designed surface has a shallow graben and a deeper deep graben as the fourth graben in at least one second section. . The building board according to claim 10 or 11, wherein the shallow graben has a groove width larger than that of the deep graben .