JP7518626B2 - Building board - Google Patents

Description

The present invention relates to a building board, and more specifically, to a building board having multiple protrusions.

Patent Document 1 describes an exterior wall construction structure. This exterior wall construction structure is composed of a metal base assembly with metal furring strips fixed to an existing wall capable of holding the exterior wall panels, and multiple exterior wall panels fastened to the metal base assembly. Since multiple exterior wall panels are arranged side by side in the horizontal direction, joints are formed between adjacent exterior wall panels in the horizontal direction. Furthermore, a sealant is poured into these joints to improve waterproofing.

JP 2005-248533 A

However, in the case of exterior wall panels like the above, the edges on the joint side are often cut, and the cut surface is noticeable when installed, and the joints between the exterior wall panels can be noticeable. In other words, the cut surface is flatter than a surface that has not been cut (a non-cut surface), and so the appearance, such as the gloss, differs from that of a non-cut surface, and the joints can be noticeable.

The present invention has been made in consideration of the above-mentioned reasons, and aims to provide a building board in which the joints formed between adjacent building boards are less noticeable.

A building board according to one embodiment of the present invention is formed in a quadrangle when viewed from the front, and includes a plurality of convex portions aligned along its edge. The plurality of convex portions include a first convex portion having a cut portion on its end face, a second convex portion having an end face with a smaller cut portion than the first convex portion, and a third convex portion having an end face without a cut portion. The end face of the first convex portion, the end face of the second convex portion, and the end face of the third convex portion are aligned along the same edge. The cut portion of the end face of the second convex portion is smaller than the cut portion of the end face of the first convex portion.

The present invention has the advantage that the joints formed between adjacent building boards are less noticeable, and the appearance is less likely to be marred.

FIG. 1 is a partial perspective view showing one embodiment of a building board according to the present invention. 2A, 2B and 2C are bottom views showing a first convex portion, a second convex portion and a third convex portion of the same. FIG. 3 is a front view showing the state in which the above building boards are installed adjacent to each other in the horizontal direction. FIG. 4 is a partial front view showing an original board used in manufacturing the building board of the same.

(Embodiment)
The building board 1 according to the present embodiment is formed as an exterior wall board for forming an exterior wall of a building. The building board 1 is formed of, for example, a ceramic siding. The ceramic siding is an inorganic board containing a hardened cement.

The building board 1 according to this embodiment is formed in a quadrangle shape when viewed from the front. Here, the front view refers to the case where the building board 1 in the installed state is viewed from the outdoor side. The surface of the building board 1 is formed as an uneven surface. Here, the surface refers to the surface of the building board 1 in the installed state that faces the outdoors. The building board 1 has a plurality of protrusions 9, so that the surface is formed as an uneven surface. That is, as shown in FIG. 1, the building board 1 is formed with a plurality of protrusions 9 protruding from the surface 80 of the flat substrate 8. The spaces between adjacent protrusions 9 are formed as recesses that are recessed deeper than the protrusions 9.

The building board 1 has multiple protrusions 9 aligned along an edge 83. The edge 83 of the building board 1 is formed by the edge of the horizontal end 81 of the base plate 8. Here, the horizontal direction refers to the left-right direction when the building board 1 is viewed from the front in an installed state. The building board 1 has an edge 83 at each of its right end and left end. The edge 83 extends in a direction perpendicular to the horizontal direction (vertical direction).

The multiple protrusions 9 are formed in a line along the edge 83. That is, the multiple protrusions 9 are lined up in the vertical direction. The interval between adjacent protrusions 9 in the vertical direction may be a constant pitch or may not be a constant pitch. The interval between adjacent protrusions 9 in the horizontal direction may be a constant pitch or may not be a constant pitch. Furthermore, the multiple protrusions 9 may have a constant vertical dimension or may not be a constant pitch. The multiple protrusions 9 are formed to extend in the horizontal direction, but the horizontal dimension may be constant or may not be a constant pitch. The cross-sectional shape of the multiple protrusions 9 (cross-section perpendicular to the horizontal direction) may be constant or may be different. The surface of each protrusion 9 is formed with an uneven pattern. The uneven pattern is formed with fine unevenness such as a matte, grained, stone, or rock-like shape.

The multiple convex portions 9 aligned along the edge 83 include a first convex portion 10 having a cut portion 4 on the end face 11. The multiple convex portions 9 also include at least one of a second convex portion 20 having a cut portion 4 on the end face 21 and a third convex portion 30 not having a cut portion 4 on the end face 31. That is, the multiple convex portions 9 aligned along the edge 83 include a first convex portion 10 and one or both of a second convex portion 20 and a third convex portion 30. Therefore, the building board 1 according to this embodiment includes a form in which the first convex portion 10 and the second convex portion 20 are aligned along the edge 83. The building board 1 according to this embodiment also includes a form in which the first convex portion 10 and the third convex portion 30 are aligned along the edge 83. The building board 1 according to this embodiment also includes a form in which the first convex portion 10, the second convex portion 20, and the third convex portion 30 are aligned along the edge 83.

The order in which the first convex portion 10, the second convex portion 20, and the third convex portion 30 are arranged along the edge 83 is not particularly limited and is random. That is, the first convex portion 10 and the second convex portion 20 may be adjacent to each other, the first convex portion 10 and the third convex portion 30 may be adjacent to each other, or the second convex portion 20 and the third convex portion 30 may be adjacent to each other. Also, convex portions 9 of the same type may be arranged consecutively. That is, the first convex portion 10 and the first convex portion 10 may be adjacent to each other, the second convex portion 20 and the second convex portion 20 may be adjacent to each other, or the third convex portion 30 and the third convex portion 30 may be adjacent to each other.

The first convex portion 10 has a cut portion 4 on the end surface 11. The second convex portion 20 has a cut portion on the end surface 21. The cut portion 4 means a portion that has been cut or shaved with a cutter or grinder, and is hereinafter also referred to as the "cut portion 4". On the other hand, the non-cut portion 5 means a portion that has not been cut or shaved with a cutter or grinder, and is hereinafter also referred to as the "non-cut portion 5". The cut portion 4 has different properties from the non-cut portion 5. Since the cut portion 4 has been cut, it has a greater degree of flatness than the non-cut portion 5. Therefore, the cut portion 4 has a higher gloss than the non-cut portion 5, and reflects more light, making it more noticeable than the non-cut portion 5. Conversely, the non-cut portion 5 has a lower degree of flatness and reflects less light than the cut portion 4, making it less noticeable. In particular, when an uneven pattern is formed on the surface of the convex portion 9, the non-cut portion 5 has an uneven pattern formed thereon, so the difference in flatness between the cut portion 4 and the non-cut portion 5 becomes larger, making the cut portion 4 even more noticeable. In addition, the building board 1 does not have any cut parts 4 formed other than the end faces 11 and 21, and most of the surface other than the end faces 11 and 21 is a non-cut part 5.

The cut portion (cut portion) 4 on the end face 21 of the second convex portion 20 is smaller than the cut portion (cut portion) 4 on the end face 11 of the first convex portion 10. In other words, the cut portion 4 on the end face 11 of the first convex portion 10 is larger than the cut portion 4 on the end face 21 of the second convex portion 20. Here, "small" means that the area of the cut portion 4 on the end face 21 is smaller than the area of the cut portion 4 on the end face 11. In other words, the area of the cut portion 4 on the end face 11 is larger than the area of the cut portion 4 on the end face 21. As a result, the cut portion 4 on the end face 21 has a smaller area than the cut portion 4 on the end face 11 and is less noticeable.

The cutting portion 4 is formed over the entire end face 11 of the first convex portion 10. That is, the entire end face 11 of the first convex portion 10 is formed as a cutting surface 14, and the end face 11 does not have a non-cut portion 5. On the other hand, the cutting portion 4 is formed only in a portion of the end face 21 of the second convex portion 20. That is, the cutting portion 4 is not formed over the entire end face 21, and only a portion of the end face 21 is formed as a cutting surface 24. Therefore, when the end face 11 and the end face 21 have the same area, the cutting portion 4 (cutting surface 24) formed on the end face 21 is smaller than the cutting portion 4 (cutting surface 14) formed on the end face 11.

The end surface 21 of the second convex portion 20 has a non-cut portion 5 in a portion other than the cut portion 4. That is, the end surface 21 has both a cut surface 24 on which the cut portion 4 is formed and a non-cut surface 25 on which the non-cut portion 5 is formed. The cut surface 24 and the non-cut surface 25 may be mixed on the end surface 21, but it is preferable that the cut surface 24 is closer to the surface 80 of the substrate 8 than the non-cut surface 25. That is, it is preferable that the non-cut surface 25 is closer to the surface 200 of the second convex portion 20 than the cut surface 24. As a result, when the building board 1 in the installed state is viewed from the front, the cut surface 24 is located farther (farther back) than the non-cut surface 25, making the cut surface 24 less noticeable.

The end face 31 of the third convex portion 30 has a non-cut portion 5 formed over the entire surface. That is, the entire end face 31 of the third convex portion 30 is formed as a non-cut surface 35, and the end face 31 does not have a cut portion 4. Therefore, the end face 31 of the third convex portion 30 has an appearance equivalent to the surface 300 of the third convex portion 30. That is, when an uneven pattern is formed on the surface 300 of the third convex portion 30, a similar uneven pattern is also formed on the end face 31. The end face 31 of the third convex portion 30 is formed with a space 82 between it and the edge 83 to make it difficult to cut.

In this manner, in the building board 1 according to the present embodiment, the first convex portion 10, the second convex portion 20, and the third convex portion 30, whose end faces 11, 21, and 31 have different appearances, are lined up along the edge 83. The end face 11 is entirely formed with the cutting surface 14, but the end face 21 has only a part of the cutting surface 24 formed thereon, and the end face 31 has no cutting surface formed thereon. Therefore, compared to the case where the entire end faces of all the convex portions 9 lined up along the edge 83 are cut, the cut portion 4 can be made less noticeable. Therefore, even if the cutting portion 4 is formed on the lateral end 81 of the building board 1, it can be made inconspicuous. For this reason, even if multiple building boards 1 are arranged so that the edges 83 are adjacent to each other as shown in FIG. 3, the joints 2 formed between the adjacent multiple building boards 1 are less noticeable. The joints 2 are gaps formed between the ends 81 (including the edges 83) of each building board 1 when the building boards 1 are arranged side by side in the lateral direction, and are formed to extend along the vertical direction. Sealing may be provided in this joint 2 to improve waterproofing.

As shown in FIG. 3, the building board 1 preferably has a pseudo joint 3 extending in the vertical direction. This pseudo joint 3 is a portion that looks like a joint 2 formed between adjacent building boards 1. The pseudo joint 3 is formed by a groove formed between adjacent convex parts 9 in the horizontal direction. In order to make it difficult to distinguish between the joint 2 and the pseudo joint 3, it is preferable to form the shape of the joint width and joint depth of the joint 2 and the shape of the pseudo joint 3 such as the joint width and joint depth to be approximately the same. The pseudo joint 3 is formed by press molding and does not have a cut portion 4. In addition, in the building board 1 according to this embodiment, the cut portion 4 is reduced on the end faces 11, 21, and 31 that constitute the joint 2. Therefore, in the building board 1, the difference in appearance between the joint 2 and the pseudo joint 3 is smaller, and the joint 2 formed between adjacent building boards 1 is even less noticeable.

As shown in FIG. 2A, the height H11 of the cut portion 4 of the first convex portion 10 is preferably the same as the height H10 of the first convex portion 10. Also, as shown in FIG. 2B, the height H21 of the cut portion 4 of the second convex portion 20 is preferably lower than the height H20 of the second convex portion 20. In this way, when the height H11 of the first convex portion 10 and the height H21 of the second convex portion 20 are the same, the cut surface 24 of the second convex portion 20 can be formed closer to the surface 80 side than the non-cut surface 25. In other words, the non-cut surface 25 of the second convex portion 20 can be formed closer to the surface 200, making the cut surface 24 less noticeable. Therefore, by arranging multiple building boards 1 so that the edges 83 are adjacent to each other, the joints 2 formed between the adjacent building boards 1 become even less noticeable.

Height H11 is the protruding dimension from surface 80 of cutting surface 14 in the thickness direction (front-back direction) of building board 1. Height H10 is the protruding dimension from surface 80 of first convex portion 10 in the thickness direction of building board 1. Similarly, height H20 is the protruding dimension from surface 80 of cutting surface 24 in the thickness direction of building board 1. Height H21 is the protruding dimension from surface 80 of second convex portion 20 in the thickness direction of building board 1.

As shown in FIG. 2A, the angle D10 of the ridge portion 111 of the cut portion 4 of the first convex portion 10 is preferably 45 degrees or more and 80 degrees or less, more preferably 60 degrees or more and 70 degrees or less. Also, as shown in FIG. 2B, the angle D20 of the ridge portion 222 of the cut portion 4 of the second convex portion 20 is preferably 45 degrees or more and 80 degrees or less, more preferably 60 degrees or more and 70 degrees or less. Here, the ridge portion 111 refers to the boundary portion between the end face 11 and the bottom face 12 in the first convex portion 10 as shown in FIG. 1. The bottom face 12 is the surface facing downward of the first convex portion 10 in the building board 1 in the installed state. The angle D10 of the ridge portion 111 is the angle between the ridge portion 111 and the surface 80. Similarly, the ridge portion 222 refers to the boundary portion between the end face 21 and the bottom face 22 in the second convex portion 20 as shown in FIG. The bottom surface 22 is the surface facing downward of the second convex portion 20 in the building board 1 after construction. The angle D20 of the ridge portion 222 is the angle between the ridge portion 222 and the surface 80. The angles D10 and D20 may be the same or different. When the angles D10 and D20 are the same, the cutting work can be performed with a cutting tool such as a grinder at a constant angle, making the cutting work easier.

By setting the angles D10 and D20 within the above-mentioned specified range, the cutting surface 24 of the second convex portion 20 can be formed closer to the surface 80 than the non-cut surface 25. In other words, the non-cut surface 25 of the second convex portion 20 can be formed closer to the surface 200, making the cutting surface 24 less noticeable. Therefore, by arranging multiple building boards 1 so that the edges 83 are adjacent to each other, the joints 2 formed between adjacent multiple building boards 1 become even less noticeable.

As shown in FIG. 2A, the surface 101 following the cut portion 4 of the first convex portion 10 is preferably flat. Here, flat means that the surface 101 is parallel to a direction perpendicular to the thickness direction of the building board 1, or that the surface 101 is not inclined or curved relative to the surface 100, and an uneven pattern may be formed on the surface 101. In other words, the surface 101 means a part of the surface 100 adjacent to the cut surface 14. Also, as shown in FIG. 2B, the surface following the cut portion 4 of the second convex portion 20 is preferably an inclined or curved surface. Here, the surface following the cut portion 4 of the second convex portion 20 means the non-cut surface 25, and an uneven pattern is formed. The non-cut surface 25 is an inclined or curved surface that changes gradually from the surface 200 to the cut surface 24.

By forming the first convex portion 10 and the second convex portion 20 in this manner, the boundary between the surface 200 of the second convex portion 20 and the cutting surface 24 becomes less clearly visible than the boundary between the surface 100 of the first convex portion 10 and the cutting surface 14. Therefore, by arranging multiple building boards 1 so that the edges 83 are adjacent to each other, the joints 2 formed between multiple adjacent building boards 1 become even less noticeable. In addition, as shown in FIG. 2C, it is preferable that the non-cut surface 35 of the third convex portion 30 is also a smoothly inclined or curved surface that continues to the surface 300.

The building board 1 according to this embodiment can be formed by cutting the original board 1A. The original board 1A is an inorganic board containing a hardened cement, similar to the building board 1. As shown in FIG. 4, the original board 1A has a plurality of lateral extending protrusions B arranged vertically. The building board 1 is formed by cutting the original board 1A at a cutting position C. The cutting position C is set along the vertical direction of the original board 1A and is set to cross the plurality of protrusions B. The cut portion of the original board 1A becomes the edge 83 of the building board 1. The cut end faces of the protrusions B form the surfaces that are to become the end faces 11 and 21 of the first protrusion 10 and the second protrusion 20. The cut end faces of the protrusions B are then cut to form the cutting surface 14 of the first protrusion 10 and the cutting surface 24 of the second protrusion 20. The protrusions B that are to become the third protrusion 30 are interrupted at the cutting position C so as not to be cut.

By forming the building board 1 in this manner, the original board 1A is cut to form the building board 1, and at the same time, the multiple protrusions B can be cut to form either or both of the first protrusion 10 and the second protrusion 20, making manufacturing easy.

(Modification)
The embodiment is merely one of various embodiments of the present disclosure. The embodiment can be modified in various ways depending on the design and the like as long as the object of the present disclosure can be achieved.

In the embodiment, the building board 1 is described as being a ceramic siding containing hardened cement, but the present invention is not limited to this, and the building board 1 may be a wood-based siding, a resin-based siding, or a metal-based siding.

In the embodiment, the building board 1 is an exterior wall board, but this is not limited, and the building board 1 may be an interior wall board, a roof board, a ceiling board, etc.

In the embodiment, the construction boards 1 are described as being arranged horizontally in multiple layers for construction, but this is not limited thereto, and the construction boards 1 may be arranged vertically in multiple layers for construction.

(summary)
As described above, the building board 1 according to the first embodiment has a plurality of convex portions 9 aligned along the edge 83. The plurality of convex portions 9 includes a first convex portion 10 having a machined portion 4 on an end face 11. The plurality of convex portions 9 also includes at least one of a second convex portion 20 having a machined portion 4 on an end face 21, and a third convex portion 30 having no machined portion 4 on an end face 31. The machined portion 4 on the end face 21 of the second convex portion 20 is smaller than the machined portion 4 on the end face 11 of the first convex portion 10.

The first aspect has the advantage that the cut-out portion can be reduced compared to cutting the entire end faces of all the protrusions 9, and when multiple building boards 1 are arranged so that the edges 83 are adjacent to each other, the joints 2 formed between adjacent building boards 1 are less noticeable.

In the building board 1 according to the second aspect, in the first aspect, the height H11 of the cut portion 4 of the first convex portion 10 is the same as the height H10 of the first convex portion 10. The height H21 of the cut portion 4 of the second convex portion 20 is lower than the height H20 of the second convex portion 20.

The second aspect has the advantage that when multiple building boards 1 are arranged so that their edges 83 are adjacent to each other, the joints 2 formed between adjacent multiple building boards 1 become even less noticeable.

In the building board 1 according to the third aspect, in the first or second aspect, the angle D10 of the ridge 111 of the cut portion 4 of the first convex portion 10 is 45 degrees or more and 80 degrees or less. The angle D20 of the ridge 222 of the cut portion 4 of the second convex portion 20 is 45 degrees or more and 80 degrees or less.

The third aspect has the advantage that when multiple building boards 1 are arranged so that their edges 83 are adjacent to each other, the joints 2 formed between adjacent building boards 1 become even less noticeable.

In the building board 1 according to the fourth aspect, in any one of the first to third aspects, the surface 101 continuing from the cut portion 4 of the first convex portion 10 is flat. The surface continuing from the cut portion 4 of the second convex portion 20 is an inclined surface or a curved surface.

The fourth aspect has the advantage that when multiple building boards 1 are arranged so that their edges 83 are adjacent to each other, the joints 2 formed between adjacent multiple building boards 1 become even less noticeable.

The building board 1 according to the fifth aspect is any one of the first to fourth aspects, in which the edge 83 of the building board 1 is formed by cutting the original board 1A. The original board 1A has a plurality of protrusions B that cross the cutting position C. The plurality of protrusions B cut at the cutting position C are formed as at least one of the first protrusions 10 or the second protrusions 20.

According to the fifth aspect, at the same time as cutting the base board 1A to form the building board 1, at least one of the first convex portion 10 or the second convex portion 20 can be formed by cutting the multiple protrusions B, which has the advantage of making manufacturing easier.

1 Building board 4 Cut part (cut part)
5. Non-cut portion
9 Convex portion 10 First convex portion 101 Surface 11 End face 111 Ridge portion 20 Second convex portion 21 End face 222 Ridge portion 30 Third convex portion 31 End face 83 Edge 1A Original plate B Protruding portion C Cutting position H10 Height H11 Height H20 Height H21 Height D10 Angle D20 Angle

Claims (5)

The plate is formed in a rectangular shape when viewed from the front and has a plurality of protruding portions arranged along its edges,
the plurality of protruding portions include a first protruding portion having a cut portion on an end surface, a second protruding portion having a cut portion on an end surface, and a third protruding portion having no cut portion on an end surface,
the end surface of the first convex portion, the end surface of the second convex portion, and the end surface of the third convex portion are aligned along the same edge,
the cut portion of the end surface of the second protrusion is smaller than the cut portion of the end surface of the first protrusion;
Building board. In claim 1,
a height of the cut portion of the first convex portion is the same as a height of the first convex portion,
The height of the cut portion of the second protrusion is lower than the height of the second protrusion.
Building board. In claim 1 or 2,
the angle of the edge of the cut portion of the first convex portion is equal to or greater than 45 degrees and equal to or less than 80 degrees,
The angle of the edge of the cut portion of the second protrusion is equal to or greater than 45 degrees and equal to or less than 80 degrees.
Building board. In any one of claims 1 to 3,
a surface of the first protrusion that is continuous with the cut portion is flat;
The surface of the second protrusion continuing from the cut portion is an inclined surface or a curved surface.
Building board. In any one of claims 1 to 4,
The edge of the building board is formed by cutting an original board,
The original plate has a plurality of protrusions extending across the cutting position;
The plurality of protrusions cut at the cutting positions are formed as at least one of the first protrusion or the second protrusion.
Building board.

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