JP2020016121A - Building board and construction structure - Google Patents

Abstract

To provide a building board in which joint of the board is less visible and has an excellent cut-off performance when constructed in a vertical direction and a construction structure of the board.SOLUTION: A building board is provided that has a first side surface on one side and a second side surface on the other side and has a design surface on a front surface as well. The building board comprises a joint bond surface and an inclined bond surface. The joint bond surface is formed on the design surface extending from a first end side which is a boundary of the design surface and the first side surface to a second end side which is a boundary of the design surface and the second side surface and intersecting with the first side surface as well. The inclined bond surface is formed on the design surface extending from the second end side to the first end side and intersecting with the second side surface with a larger angle than an angle at which the joint bond surface intersects with the first side surface as well. The first end side is lateralized toward the front surface side relative to the second end side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a building board constituting an outer wall of a building and a construction structure of the building board in which the building boards are vertically adjacent to each other.

  A ceramic siding board, a metal siding board, or the like is used as a building board constituting an outer wall of a building. In order to improve the design, the surface of the building board may be provided with a design surface having joints and projections. Is configured.

  In general, building boards are designed so that the lower end of the design surface of the upper building board and the upper end of the design surface of the lower building board coincide with each other so that the seams of the boards do not stand out when constructed vertically.

  However, the lower end of the design surface of the upper architectural board and the upper end of the design surface of the lower architectural board may be shifted due to unevenness of the ground surface or the like, and the seam between the upper and lower architectural boards may be conspicuous. When the lower end of the design surface of the upper building board projects outside, a shadow is formed, which is particularly conspicuous.

  Therefore, Patent Documents 1 and 2 disclose that the thickness dimension of the lower end of the design surface of the upper architectural board (distance to the back surface) and the thickness dimension of the upper end of the design surface of the lower architectural board differ from each other. It describes that the upper end of the design surface of the lower building board is shifted back and forth.

JP 2006-265555 A JP 2008-133701 A

  When the lower end of the design surface of the upper building board is shifted to the outdoor side, a shadow due to the protruding portion of the upper building board is formed on the lower building board, and the seam between the upper and lower building boards is conspicuous.

  If the upper design surface of the lower building board is shifted to the outdoor side, water accumulates on the upper surface extending from the upper design surface of the lower building board to the back side, making it easier for water to enter the seam of the building board, so that water is stopped. Gets worse.

  The present invention has been conceived under such circumstances, and an object thereof is to provide a construction board that is hardly conspicuous when it is constructed up and down, and that is excellent in waterproofness, and construction of a board. It is to provide a structure.

  According to a first aspect of the present invention, there is provided a building board having a first side surface on one side and a second side surface on the other side, and having a design surface on a front surface side. The building board includes a joint ground and an inclined ground. The joint ground extends from a first edge, which is a boundary between the design surface and the first side, toward a second edge, which is a boundary between the design surface and the second side, and intersects the first side. , Formed on the design surface. The inclined joint surface extends from the second end to the first end, and is formed on the design surface by intersecting with the second side at an angle larger than an angle at which the joint surface intersects with the first side. ing. Then, the first end side is deviated to the front side with respect to the second end side.

  When the building board of the first aspect is constructed up and down such that the other side is the upper side and the other side is the lower side, the first side surface of the upper side building board and the second side surface of the lower side building board face each other. Since the first edge is deviated to the surface side with respect to the second edge, the first edge of the building board constructed on the upper side is the same as the second edge of the building board constructed on the lower side. Without contact, the first edge of the upper building board is offset to the outdoor side. However, at the joint between the upper building board and the lower building board, the jointed ground of the upper building board and the sloped ground of the lower building board make the jointed ground of the upper building board the joint bottom. A joined joint is formed. For this reason, the first edge of the upper building board biased to the outdoor side becomes the lower edge of the joint bottom surface of the joint joint, and is less noticeable. In addition, the first edge of the upper building board biased to the outdoor side faces the inclined joint surface of the lower building board, and thus is formed by the first edge of the upper building board biased to the outdoor side. Shadows are smaller and less noticeable.

  Further, after the construction, the rainwater flowing down the upper building board flows along the joint ground of the upper building board and the inclined ground of the lower building board. Here, the jointed ground of the upper building board and the sloped ground of the lower building board are spaced apart from each other, and the seam of the upper and lower boards is formed closer to the indoor side than the first end of the upper building board. As a result, it is difficult for rainwater to enter the joint between the upper and lower plates, and it is excellent in waterproofness.

  As described above, the building board according to the first aspect of the present invention is suitable for realizing a building board that is less noticeable in the seam between the upper and lower boards when it is constructed up and down, and is excellent in waterproofness.

  In the building board according to the second aspect of the present invention, in addition to the first aspect, the design surface is such that the joint surface is in contact with the first side surface from the end on the second end side of the joint surface. It has a rising slope that extends across the seam ground at an angle greater than the angle of intersection.

  It is preferable to have a rising inclined surface because the design surface is rich in irregularities and the seam between the upper and lower plates is less noticeable. Also, there is no problem with rainwater flowing from the rising slope to the joint ground. Further, the joint is preferably shaped so as to have inclined surfaces at the top and bottom, and the appearance of the wall after construction is improved.

  In the building board according to the third aspect of the present invention, in addition to the first aspect, the joint ground has a chamfer on the first edge side. Examples of the chamfered shape include an inclined shape, an arc shape, and a polygonal shape.

  If the joint ground has a chamfer on the first edge side, the upper edge of the first edge of the upper architectural board has a chamfered shape when the architectural board is constructed up and down, so that the lower architectural board is inclined. This is preferable because the shadow formed on the ground surface becomes thinner and less noticeable.

  In the building board according to the fourth aspect of the present invention, in addition to the first aspect, the inclination angle of the second end side and the inclination angle of the first end side are different on the inclined joint surface. On the inclined joint surface, the inclination angle of the second end side with respect to the joint joint surface is larger than the inclination angle of the first end side with respect to the joint joint surface.

  When the construction board is constructed up and down when the inclination angle with respect to the joint seam on the second end side is larger than the inclination angle with respect to the joint seam on the first end side, In addition, the gap formed by the first side surface of the upper building board and the sloped ground surface on the second end side of the lower building board becomes smaller, and the gap becomes less noticeable, which is preferable. On the inclined joint surface, when the inclination angle of the first end side with respect to the joint joint surface is similar to the inclination angle of the rising inclined surface with reference to the joint joint surface, the upper and lower inclined surfaces of the joint joint are similar, It is preferable because of good balance.

  In the building board according to a fifth aspect of the present invention, in addition to the first aspect, the design surface has an inner joint inside the design surface. The inner joint is an inner bottom surface extending at a predetermined distance from the first end side to the second end side, and is located on the first end side with respect to the inner bottom surface, and faces toward the first end side. A first inclined surface extending at a predetermined distance, and a second inclined surface extending from the end on the second side of the inner bottom surface to the front surface side and intersecting with the inner bottom surface is provided.

  It is preferable to have an inner joint on the inner side of the design surface because the design surface is rich in irregularities and the seam between the upper and lower plates is less noticeable. Further, it is preferable because the appearance of the wall after the construction is improved.

  The building board according to a sixth aspect of the present invention, in addition to the fifth aspect, wherein the inner joint extends in a direction opposite to the surface side from an end of the inner bottom surface on the first edge side, and the inner joint surface and the second joint surface extend in the opposite direction. It further includes an inner side surface intersecting with the one inclined surface. The third edge, which is the boundary between the inner bottom surface and the inner surface, is biased toward the front surface with respect to the fourth edge, which is the boundary between the first inclined surface and the inner surface. In addition, the inner side surface and the first inclined surface form a void that is open on the surface side.

  Even at the inner joint, a shadow is formed because the third end side is shifted to the outdoor side. Since the shadow of the joint is also formed by the first edge of the upper building board being biased to the outside, the shadow formed on the inner joint is similar to the shadow formed on the joint. Therefore, the seam between the upper and lower plates becomes less noticeable, which is preferable.

  When the sectional view shape of the joint ground and the inner bottom surface is the same, and the sectional view shape of the inclined joint ground and the first inclined surface are the same, the shadow of the joint joint and the shadow of the inner joint become the same, Seams are preferred because they are less noticeable. It is more preferable that the joint ground and the inner bottom surface have a chamfer on the first end side, because the shadow formed on the joint joint and the inner joint becomes thin.

  According to a seventh aspect of the present invention, there is provided a construction structure of a building board in which two building boards are installed on a structural body such that the two building boards are vertically adjacent to each other.

  The building board has a first side surface located below, a second side surface located above, and a design surface, a joint surface, and a sloped surface on the front side when the building boards are vertically adjacent to each other.

  The joint ground extends from a first edge, which is a boundary between the design surface and the first side, toward a second edge, which is a boundary between the design surface and the second side, and intersects the first side. , Formed on the design surface. The inclined joint surface extends from the second end to the first end, and is formed on the design surface by intersecting with the second side at an angle larger than an angle at which the joint surface intersects with the first side. ing.

  At the joint between the upper building board and the lower building board, a joint is formed by the joint ground of the upper building board and the sloped ground of the lower building board. Then, at the joint, the first edge of the upper building board is biased toward the front side with respect to the second edge of the lower building board. Further, at the joint, the first side of the upper building board and the second side of the lower building board are opposed to each other, and the first side of the upper building board and the sloped ground of the lower building board. An open space is formed on the surface side.

  In this construction structure, the first end of the upper building board is offset toward the front side with respect to the second end of the lower building board. However, the first edge of the upper building board is the lower edge of the joint bottom surface of the joint and is not easily noticeable. In addition, since the first side of the upper building board is opposed to the sloped ground surface of the lower building board, the shadow formed by the first side of the upper building board biased to the outdoor side is small, and Less noticeable.

  Further, the first side of the upper building board and the second side of the lower building board are opposed to each other, and are opened to the front side by the first side of the upper building board and the sloped ground of the lower building board. Voids are formed. Therefore, the joint between the upper and lower plates is formed closer to the indoor side than the first end of the upper building plate. Therefore, the rainwater that flows down the upper building board flows from the joint ground of the upper building board to the sloped ground of the lower building board, and the upper and lower boards that are more outdoor than the joint ground of the upper building board. It is difficult to flow at the seam and has excellent water stoppage.

  As described above, in the construction structure for building boards according to the seventh aspect of the present invention, the seam between the upper and lower plates is hardly conspicuous and excellent in waterproofness.

  In the construction structure of a building board according to the eighth aspect of the present invention, in addition to the seventh aspect, the building board is provided with an inner joint inside a design surface. The inner joint is an inner bottom surface extending at a predetermined distance from the first end side to the second end side, and is located on the first end side with respect to the inner bottom surface, and faces toward the first end side. A first inclined surface extending at a predetermined distance, a second inclined surface extending from the end on the second end side of the inner bottom surface toward the surface side, and intersecting the inner bottom surface; An inner side surface extending from the end on the side of the end side in a direction opposite to the surface side, and intersecting the inner bottom surface and the first inclined surface. The third edge, which is the boundary between the inner bottom surface and the inner surface, is biased toward the front side with respect to the fourth edge, which is the boundary between the first inclined surface and the inner surface, and the inner surface and the first inclined surface. Thus, an open space is formed on the surface side.

  In this construction structure, even at the inner joint, a shadow is formed by the third end side deviating to the outdoor side. Since the shadow of the joint is also formed by the first edge of the upper building board being biased to the outside, the shadow formed on the inner joint is similar to the shadow formed on the joint. Therefore, the seam between the upper and lower plates becomes less noticeable, which is preferable.

  In the construction structure of a building board according to the ninth aspect of the present invention, in addition to the eighth aspect, the gap formed at the joint joint and the gap formed at the inner joint have the same cross-sectional shape. Therefore, the shadow of the joint joint and the shadow of the inner joint become the same, and the seam between the upper and lower plates becomes less noticeable, which is preferable. It is more preferable that the joint ground and the inner bottom surface have a chamfer on the first end side, because the shadow formed on the joint joint and the inner joint becomes thin.

  ADVANTAGE OF THE INVENTION According to this invention, when constructed up and down, the seam of a board is not conspicuous, and the building board excellent in water stoppage, and the construction structure of a board can be provided.

It is an enlarged front view of the left end part of the outer wall board which concerns on Embodiment 1 of this invention. It is an up-down sectional view of the outer wall board which concerns on Embodiment 1 of this invention. It is a figure which shows the joining structure which constructed the outer wall board which concerns on Embodiment 1 of this invention up and down. FIG. 4 is a diagram illustrating a situation where intrusion of water is prevented in the joint structure illustrated in FIG. 3. It is an enlarged front view of the left end part of the outer wall board which concerns on Embodiment 2 of this invention. It is a top-down sectional view of the outer wall board which concerns on Embodiment 2 of this invention. It is a figure which shows the joining structure which constructed the outer wall board which concerns on Embodiment 2 of this invention up and down. It is an up-down sectional view of the outer wall board which concerns on Embodiment 3 of this invention. It is a figure which shows the joining structure which constructed the outer wall board which concerns on Embodiment 3 of this invention up and down. It is an up-down sectional view of the outer wall board which concerns on Embodiment 4 of this invention. It is a figure which shows the joining structure which constructed the outer wall board which concerns on Embodiment 4 of this invention up and down.

  Hereinafter, first to fourth embodiments of the present invention will be described with reference to the drawings. In FIG. 1, a vertically upward direction is indicated as up, a vertically downward direction is indicated as down, a horizontal right direction is indicated as right, and a horizontal left direction is indicated as left. Also, in FIG. 1, the front side of the drawing is the front side, and the back side of the drawing is the rear side. The directions shown in FIGS. 2 and subsequent figures are displayed in correspondence with FIG.

(Embodiment 1)
The building board of the first embodiment is an outer wall board 1A made of a ceramic material including cement. The outer wall plate 1A has a substantially rectangular shape that is long in the left-right direction, and has, for example, a vertical dimension of 455 to 1000 mm and a horizontal dimension of 1800 to 3030 mm.

  The outer wall plate 1A has, for example, an upper-lower joint structure. As shown in FIGS. 1 and 2, the upper edge has a lower solid portion 7A protruding upward on the rear surface side as a joining portion to be overlapped with the adjacent outer wall plate 1A. The lower edge has a solid portion 6A having a concave back surface side as a joining portion to be overlapped with the adjacent outer wall plate 1A.

  As shown in FIG. 3, the upper solid portion 6A of the upper outer wall plate 1A is superimposed on the lower solid portion 7A of the lower outer wall plate 1A, so that the upper and lower outer wall plates 1A are joined. I have. The lower solid portion 7A is formed with a bead-shaped coking C in the left-right direction. When the upper solid portion 6A is superimposed on the lower solid portion 7A, the coking C is crushed, and the outer wall plate 1A is joined. The part is made watertight.

  As shown in FIG. 2, the outer wall plate 1A has a lower surface 3A on one lower side and an upper surface 4A on the other upper side in the vertical direction. In the first embodiment, the lower side 3A is the first side, and the upper side 4A is the second side. As shown in FIG. 3, when the outer wall boards 1A, 1A are vertically overlapped, the lower side 3A of the upper building board 1A and the upper side 4A of the lower building board 1A face each other, and a seam of the upper and lower boards is formed. It has become.

  The outer wall plate 1A also has left and right sides on both sides in the left-right direction. In FIG. 1, only the left side surface 5A on the left side is shown, and the right side surface is not shown. In the case of the first embodiment, the left and right side surfaces do not have upper and lower real parts as joints like the lower side surface 3A and the upper side surface 4A, but are the same as the lower side surface 3A and the upper side surface 4A. May have a real part extending in the left-right direction.

  Further, the outer wall plate 1A has a design surface 2A on the front side. The design surface 2A is a surface on the outdoor side of the outer wall when the outer wall plate 1A is constructed, and is a portion constituting a pattern or a pattern of the outer wall plate 1A. In the first embodiment, the design surface 2A occupies a region from the front end of the lower surface 3A to the front end of the upper surface 4A in the vertical direction, and the surface of the left side 5A in the horizontal direction. Occupies the area from the side end to the front side end of the right side surface.

  The boundary between the design surface 2A and the lower side surface 3A is a lower end side 31a which is an end on the front surface side of a plane formed by the lower side surface 3A. The boundary between the design surface 2A and the upper side surface 4A is an upper end side 41a, which is the front end of the plane formed by the upper side surface 4A. In the first embodiment, the lower edge 31a is the first edge, and the upper edge 41a is the second edge.

  Similarly, the boundary between the design surface 2A and the left side surface 5A is the left side 51a which is the front end of the plane formed by the left side surface 5A, and although not shown, the boundary between the design surface 2A and the right side surface is not shown. , The right side, which is the front end of the plane formed by the right side.

The design surface 2A has a joint surface 21A on the lower surface 3A side and an inclined joint surface 27A on the upper surface 4A side.
The joint ground 21A is formed from the left end 51a to the right end on the outer wall plate 1A left and right along the lower end 31a. In the case of the first embodiment, the joint ground 21A is orthogonal to the lower side surface 3A.
The inclined joint surface 27A is formed along the upper edge 41a from the left edge 51a to the right edge of the outer wall plate 1A left and right.

The design surface 2A has a plurality of groove-like horizontal joints 12A in the left-right direction and a plurality of groove-like vertical joints 13A in the vertical direction. The side joint 12A is an inner joint, and traverses the outer wall board 1A from left to right on the left side 51a, and is formed in the outer wall board 1A up and down three in parallel with the jointed ground 21A and the inclined ground 27A. ing.
The vertical joints 13A are formed at regular intervals between the three horizontal joints 12A, the joint grounds 21A, and the inclined joints 27A.

  A region defined by the joint ground 21A, the inclined joint ground 27A, the horizontal joint 12A, and the vertical joint 13A is a projection 11A. The protrusions 11A have a substantially rectangular shape that is long in the left-right direction, and as shown in FIG.

  The joint ground 21A has a predetermined width in the vertical direction. The vertical dimension and surface shape of the joint ground 21A are the same as an inner bottom surface 25A described later.

On the upper end side of the joint ground 21A, a rising inclined surface 22A serving as a wall surface of the convex portion 11A located at the lowermost side of the design surface 2A is located.
The rising inclined surface 22A extends from the end on the upper end side 41a side of the joint ground 21A toward the front surface side. The angle at which the rising inclined surface 22A intersects the joint ground 21A, that is, the angle 2X formed by the rising inclined surface 22A and the joint ground 21A outside the outer wall plate 1A, is such that the joint ground 21A is lower than the lower surface 3A. Is set to be larger than the angle 1X formed between the joint wall 21A and the lower surface 3A inside the outer wall plate 1A.
In the case of the first embodiment, an angle 1X at which the joint ground 21A intersects with the lower side surface 3A is 90 °, and an angle 2X at which the rising slope 22A intersects with the joint ground 21A is 130 °. The vertical dimension and surface shape of the rising inclined surface 22A are the same as a second inclined surface 26A described later.

  The inclined joint surface 27A is a surface having a width of a predetermined length in the vertical direction and inclined with respect to the vertical direction. In the case of the first embodiment, the inclined ground surface 27A includes an upper inclined ground surface 271A formed on the upper end side and a lower inclined ground surface 272A formed on the lower end side.

The upper inclined ground surface 271A extends from the upper end side 41a toward the lower oblique surface side. An end on the lower end side of the upper inclined ground 271A, that is, an end on the surface side is located on the same plane as the joint ground 21A.
The angle at which the upper inclined joint surface 271A intersects the upper side surface 4A, that is, the angle 4X formed by the upper inclined joint surface 271A and the upper surface 4A inside the outer wall plate 1A is defined by the joint joint surface 21A and the lower surface 3A. The angle is set to be larger than 1X.
In the case of the first embodiment, the angle 4X at which the upper inclined ground surface 271A intersects with the upper side surface 4A is 165 °.

The lower inclined joint surface 272A is a surface that forms the wall surface of the convex portion 11A located on the uppermost side of the design surface 2A, and extends from the lower end side end of the upper inclined joint surface 271A toward the lower oblique surface side. ing. With reference to a vertical surface, that is, a surface parallel to the joint ground 21A, the inclination angle of the lower inclined ground 272A is set to be different from the inclination angle of the upper inclined ground 271A.
In the case of the first embodiment, the inclination angle 6Y of the upper inclined joint surface 271A with respect to the plane parallel to the joint joint surface 21A is 75 °, and the inclination angle 5Y of the lower inclined joint surface 272A is 50 °. .

  Note that the inclination angle 1Y of the rising inclined surface 22A based on the joint ground surface 21A is the same as the inclination angle 5Y of the lower inclined joint surface 272A, and is 50 °.

  The vertical dimensions and surface shape of the upper inclined ground 271A are the same as the upper first inclined surface 231A described later. The vertical dimensions and surface shape of the lower inclined ground 272A are the same as a lower first inclined surface 232A described later.

  As shown in FIG. 2, the dimension t1 from the lower edge 31a to the rear surface is larger than the dimension t2 from the upper edge 41a to the rear surface. Therefore, the lower end side 31a is more deviated to the surface side than the upper end side 41a.

  As shown in FIG. 3, the cross joint 12A has a shape substantially similar to the appearance of a joint formed when the outer wall plate 1A of the first embodiment is joined in the up-down direction. That is, the side joint 12A corresponds to the inner bottom surface 25A corresponding to the joint surface 21A, the inner surface 24A corresponding to the lower surface 3A, the first inclined surface 23A corresponding to the inclined joint surface 27A, and the rising inclined surface 22A. 26A.

  The inner bottom surface 25A has a vertical dimension equal to the width of the joint ground 21A.

  The inner side surface 24A extends from the joint front end side 61a, which is the end on the lower end side 31a side of the inner bottom surface 25A, to the back side in parallel with the lower side surface 3A. The inner side surface 24A is orthogonal to the inner bottom surface 25A. In the first embodiment, the joint front edge 61a is the third edge.

  The first inclined surface 23A is closer to the lower side 31a than the inner bottom surface 25A, and extends with a predetermined distance toward the lower side 31a. In the first embodiment, the first inclined surface 23A is constituted by the upper first inclined surface 231A and the lower first inclined surface 232A, and each of the first inclined surface 231A and the lower inclined surface 271A of the inclined ground 27A. It corresponds to the ground 272A. That is, the upper first inclined surface 231A is formed on the upper side 41a, and the lower first inclined surface 232A is formed on the lower side 31a.

The upper first inclined surface 231A extends toward the lower oblique surface side from the joint rear end 71a which is the rearmost side of the inner side surface 24A. The angle at which the upper first inclined surface 231A intersects with the inner side surface 24A is, for example, 15 °. This angle is substantially the same as the angle formed by the upper inclined joint surface 271A and the lower side surface 3A when the outer wall plate 1A is vertically joined.
In the first embodiment, the joint rear end side 71a is the fourth end side.

The lower first inclined surface 232A is a surface that forms the upper wall surface of the convex portion 11A, and extends from the lower end side end of the upper first inclined surface 231A toward the lower oblique surface side. The inclination angle of the lower first inclined surface 232A is different from the inclination angle of the upper first inclined surface 231A.
In the case of the first embodiment, the inclination angle 3Y of the upper first inclined surface 231A with reference to the joint ground 21A is 75 °, and the inclination angle 2Y of the lower first inclined surface 232A with reference to the joint ground 21A is It is 50 °.

The second inclined surface 26A is a surface that forms the lower wall surface of the convex portion 11A, and extends from the upper end side end of the inner bottom surface 25A toward the upper oblique surface side.
In the case of the first embodiment, the angle at which the second inclined surface 26A intersects the inner bottom surface 25A, that is, the angle 3X formed by the second inclined surface 26A and the inner bottom surface 25A outside the outer wall plate 1A is 130 °. There is an angle 2X formed between the rising slope 22A and the joint surface 21A outside the outer wall plate 1A.
In the case of the first embodiment, the inclination angle 4Y of the second inclined surface 26A with respect to the joint ground 21A is 50 °, and the inclination of the lower first inclined surface 232A with respect to the joint ground 21A. It is the same as the angle 2Y.

  As shown in FIG. 2, the dimension t3 from the joint front edge 61a, which is the boundary between the inner bottom surface 25A and the inner surface 24A, to the back surface is from the joint rear edge 71a, which is the boundary between the first inclined surface 23A and the inner surface 24A. It is larger than the dimension t4 up to the back surface. For this reason, the joint front end side 61a is more deviated to the surface side than the joint rear end side 71a.

  In the case of the first embodiment, the dimension t3 from the joint front end side 61a to the back surface is the same as the dimension t1 from the lower end side 31a to the back surface. The dimension t4 from the joint rear end side 71a to the back surface is the same as the dimension t2 from the upper end side 41a to the back surface.

  In the side joint 12A, a gap 121a opened to the front side is formed by the inner side surface 24A and the first inclined surface 23A. Therefore, the joint front end side 61a and the first inclined surface 23A face each other but do not abut.

The vertical joint 13A is a vertical bottom surface 28A extending vertically and a surface forming a right wall surface of the convex portion 11A, and a left inclined surface 29A extending from the left end of the vertical bottom surface 28A toward the left oblique surface side, It is a surface forming the left wall surface of the convex portion 11A, and includes a right inclined surface 30A extending toward the right oblique surface side from the right end of the vertical joint bottom surface 28A.
Note that, in the outer wall plate 1A, the vertical joint 13A does not cross the outer wall plate 1A up and down from the upper end side 41a to the lower end side 31a, and is separated by the convex portion 11A.

In the case of the first embodiment, the outer wall plate 1A can be applied to the structural body, for example, as follows.
First, the outer wall plate 1A is attached to the structural body such that the lower surface 3A is on the lower side and the upper surface 4A is on the upper side.

  Next, another outer wall plate 1A is attached above the outer wall plate 1A attached to the structural body. At this time, as shown in FIG. 3, the lower wall 7A of the outer wall plate 1A attached to the structural frame is attached so that the upper wall 6A of another outer wall plate 1A overlaps. Caulking C is crushed by the solid portion 6A.

  Here, the inclined ground 27A extends from the upper end 41a of the outer wall plate 1A, and the joint ground 21A extends from the lower end 31a. For this reason, a joint joint 14A is formed at the upper and lower connecting portions of the outer wall plates 1A, 1A by the inclined joint surface 27A of the lower outer wall plate 1A and the joint joint surface 21A of the upper outer wall plate 1A. . At the joint 14A, the joint surface 21A of the upper outer wall plate 1A becomes the joint bottom surface, and the lower surface 3A of the upper building plate 1A and the upper surface 4A of the lower building plate 1A face each other and come into contact with each other. I have.

  The lower edge 31a, which is the boundary between the design surface 2A and the lower surface 3A, is offset more toward the surface than the upper edge 41a, which is the boundary between the design surface 2A and the upper surface 4A. Therefore, a void 141a opened to the surface side is formed in the joint 14A by the lower side surface 3A of the upper building board 1A and the inclined joint 27A of the lower building board 1A. Also, the lower edge 31a of the upper building board 1A does not come into contact with the inclined ground 27A of the lower building board 1A, and the seam between the upper building board 1A and the lower building board 1A is the upper building board. It is configured to be formed on the back surface side of the lower end side 31a of 1A.

  Thereafter, by repeating the same operation, the construction structure of the building board in which the outer wall plate 1A is constructed on the structural skeleton with the upper and lower sides being adjacent to each other is constructed. In this construction, a connection joint 14A is formed at a connection portion between the upper and lower outer wall plates 1A and 1A.

  In the case of the first embodiment, when the outer wall plate 1A is attached to the structural body such that the lower side surface 3A is on the lower side and the upper side surface 4A is on the upper side, the connection portion between the upper outer wall plate 1A and the lower outer wall plate 1A is formed. The joint 21A of the upper outer panel 1A and the inclined joint 27A of the lower outer panel 1A form a joint 14A with the joint 21A of the upper outer panel 1A as a joint bottom. It has become.

  The lower edge 31a of the upper outer wall plate 1A is shifted more toward the front side than the upper edge 41a of the lower outer wall plate 1A, but the lower edge 31a of the upper outer wall plate 1A becomes the lower edge of the bottom surface of the joint 14A. So it is less noticeable.

  Further, since the lower end side 31a of the upper outer wall plate 1A biased toward the front side is opposed to the inclined joint surface 27A of the lower outer wall plate 1A, it is formed by the lower end side 31a of the upper outer wall plate 1A. The shadows are smaller and less noticeable.

  Further, as shown in FIG. 4, water droplets W such as rainwater flow along the joint surface 21A of the upper outer wall plate 1A and the inclined ground surface 27A of the lower outer wall plate 1A. Here, the joint surface 21A of the upper outer wall plate 1A is separated from the inclined joint surface 27A of the lower outer wall plate 1A with a gap 141a therebetween, and the joint between the upper and lower plates is the upper outer wall plate 1A. Is formed on the back surface side of the lower end side 31a, so that rainwater does not easily enter the joint between the upper and lower plates, and is excellent in water stoppage.

  In addition, since the inclination angle 6Y of the upper inclined joint surface 271A constituting the gap 141a is larger than the inclination angle 5Y of the lower inclined joint surface 272A, the distance between the upper inclined joint surface 271A and the joint joint surface 21A is It becomes closer, and the space 141a is less noticeable.

  Also, since the inclination angle 5Y of the lower inclined joint surface 272A is the same as the inclination angle 1Y of the rising inclined surface 22A, the upper and lower inclined surfaces of the joint joint 14A are the same, and the design is excellent.

  Further, in the case of the first embodiment, the outer wall plate 1A includes a horizontal joint 12A having an inner bottom surface 25A and a first inclined surface 23A inside the design surface 2A. The vertical dimension and surface shape of the inner bottom surface 25A are the same as the joint ground 21A, and the vertical dimension and surface shape of the first inclined surface 23A are the same as the inclined ground 27A. The dimension t3 from the joint front end side 61a to the back side is the same as the dimension t1 from the lower end side 31a to the back side, and the dimension t4 from the joint back end side 71a to the back side is the dimension t4 from the upper end side 41a to the back side. It is the same as the dimension t2. Therefore, the space 121a and the space 141a have the same shape, and the horizontal joint 12A and the joint 14A have the same shape. Therefore, the shadow formed on the horizontal joint 12A and the shadow formed on the joint 14A are the same, and the seam of the board is the same. Is less noticeable.

  As described above, the outer wall plate 1 </ b> A is suitable for realizing high waterproofness with less noticeable seams of the plate in the use state.

(Embodiment 2)
The outer wall plate according to the second embodiment is the outer wall plate 1B shown in FIGS. The outer wall plate 1B is different from the outer wall plate 1A in the shape of the joint ground 21B and the inner bottom surface 25B. In addition, the dimension in the thickness direction of the first side surface 3B and the inner side surface 24B is smaller than the lower side surface 3A and the inner side surface 24A due to the shape change of the joint ground 21B and the inner bottom surface 25B. Other configurations are the same as the outer wall plate 1A, and are denoted by the same reference numerals as the outer wall plate 1A.

Also in the case of the second embodiment, the joint ground 21B is formed along the lower end side 31b from the left end side 51a to the right end side of the outer wall plate 1B to the left and right, and has a predetermined length in the vertical direction. .
However, the difference from the first embodiment is that the joint ground 21B has a chamfer 211B on the lower end side 31b side. In the case of the second embodiment, the joint ground 21B includes an upper joint ground 212B formed on the upper side and a chamfer 211B formed on the lower side.

The upper joint ground 212B extends vertically downward from an end of the rising slope 22A on the lower end side 31b side.
In the case of the second embodiment, the inclination angle 5X of the upper joint ground 212B with respect to the plane parallel to the lower side surface 3B is 90 °, and the upper joint ground 212B and the rising inclined surface 22A are outside the outer wall plate 1B. The formed angle 2X is 130 °.

  The chamfer 211B is located on the lowermost side of the design surface 2B, and extends from the lower end side end of the upper joint ground 212B toward the lower end side 31b on the front side of the lower side surface 3B on the lower oblique back side. , Inclined shape. In the second embodiment, the left and right positions and left and right dimensions of the chamfer 211B are the same as the inclined ground 27A.

  As shown in FIG. 6, a dimension t5 from the lower end side 31b of the outer wall plate 1B to the back surface is larger than a dimension t6 from the upper end side 41a of the outer wall plate 1B to the back surface. Therefore, the lower end side 31b is deviated to the surface side more than the upper end side 41a.

The inner bottom surface 25B is formed along the joint front end side 61b from the left end side 51a to the right end side on the outer wall plate 1B left and right, and has a width of a predetermined length in the up-down direction as in the first embodiment. is there.
However, the difference from the first embodiment is that the inner bottom surface 25B has a chamfer 251B on the joint front end side 61b side. In the case of the second embodiment, the inner bottom surface 25B includes an upper inner bottom surface 252B formed on the upper side and a chamfer 251B formed on the lower side.

The upper inner bottom surface 252B extends vertically downward from an end of the second inclined surface 26A on the lower end side 31b side, and is located on the same plane as the upper joint ground 212B.
In the case of the second embodiment, the angle 3X formed between the upper inner bottom surface 252B and the second inclined surface 26A outside the outer wall plate 1B is such that the upper joint ground 212B and the rising inclined surface 22A are formed outside the outer wall plate 1B. The angle is 2X, which is 130 °.

  The chamfer 251B extends from the lower end side end of the upper inner bottom surface 252B toward the joint front edge 61b on the front side of the inner side surface 24B on the lower oblique back side, and has an inclined shape. In the second embodiment, the angle of inclination of the chamfer 251B with respect to the upper inner bottom surface 252B is the same as the angle of inclination of the chamfer 211B with respect to the upper joint ground 212B. Further, the left and right positions and the left and right dimensions of the chamfer 251B are the same as the first inclined surface 23A facing in the horizontal joint.

  Further, as shown in FIG. 6, the dimension t7 from the joint front end side 61b to the back surface is the same as the dimension t5 from the lower end side 31b to the back surface. The dimension t8 from the joint rear end side 71a to the back surface is the same as the dimension t6 from the upper end side 41a to the back surface.

  Therefore, the dimension t7 from the joint front end side 61b to the back surface is larger than the dimension t8 from the joint rear end side 71a to the back surface. For this reason, the joint front end side 61b is more deviated to the surface side than the joint rear end side 71a. In addition, a gap 121b opened to the front side is formed in the horizontal joint 12B by the inner side surface 24B and the first inclined surface 23A. Therefore, the joint front end side 61b faces the first inclined surface 23A but does not abut.

  Also in the case of the second embodiment, as shown in FIG. 7, when the outer wall plate 1B is attached to the structural body such that the lower surface 3B is on the lower side and the upper surface 4A is on the upper side, the upper outer wall plate 1B and the lower At the joint of the outer wall plate 1B, the joint joint 21B of the upper outer wall plate 1B and the inclined joint surface 27A of the lower outer wall plate 1B form a joint joint having the joint joint surface 21B of the upper outer wall plate 1B as the joint bottom surface. 14B are formed.

  The lower edge 31b of the upper outer wall plate 1B deviates more toward the surface than the upper edge 41a of the lower outer wall plate 1B, but the lower edge 31b of the upper outer wall plate 1B becomes the lower edge of the bottom surface of the joint 14B. So it is less noticeable.

  In addition, since the lower end side 31b of the upper outer wall plate 1B biased toward the front side faces the inclined ground 27A of the lower outer wall plate 1B, the lower side edge 31b of the upper outer wall plate 1B biased toward the front surface side. The shadow formed by the lower edge 31b is smaller and less noticeable.

  In Embodiment 2, since the chamfer 211B is provided on the lower end side 31b side of the joint ground 21B, the shadow formed by the lower end side 31b is the shadow formed by the lower end side 31a of the outer wall plate 1A. Less noticeable than.

  Further, a void 141b opened to the surface side is formed in the joint joint 14B by the lower side surface 3B of the upper building board 1B and the inclined joint surface 27A of the lower building board 1B. The joint surface 21B of the upper outer wall plate 1B is separated from the inclined joint surface 27A of the lower outer wall plate 1B with a space 141b therebetween, and the joint between the upper and lower plates is smaller than the lower end side 31b of the upper outer wall plate 1B. Since it is formed on the back side, it is difficult for rainwater to enter the joint between the upper and lower plates, and it is excellent in waterproofness.

  Further, also in the case of the second embodiment, the outer wall plate 1B includes an inner bottom surface 25B and a horizontal joint 12B having a first inclined surface 23A inside the design surface 2B. The inner bottom surface 25B has the same vertical dimension and surface shape as the joint ground 21B, and the first inclined surface 23A has the same vertical size and surface shape as the inclined ground 27A. The dimension t7 from the joint front end side 61b to the back side is the same as the dimension t5 from the lower end side 31b to the back side, and the dimension t8 from the joint back end side 71a to the back side is the dimension t8 from the upper end side 41a to the back side. It is the same as the dimension t6. Therefore, the gap 121b and the gap 141b have the same shape, and the horizontal joint 12B and the joint joint 14B have the same shape. Therefore, the shadow formed on the horizontal joint 12B and the shadow formed on the joint joint 14B are the same, and the seam of the plate is formed. Is less noticeable.

  Since the joint front edge 61b of the inner bottom surface 25B is also chamfered 251B, the shadow formed by the joint front edge 61b is less noticeable than the shadow formed by the joint front edge 61a of the outer wall plate 1A.

  Further, the inclination angle 6Y of the upper inclined joint ground 271A with respect to the plane parallel to the upper joint joint ground 212B is determined by the inclination angle 5Y of the lower inclined joint ground 272A with respect to the plane parallel to the upper joint joint ground 212B. Is also large, the distance between the upper inclined joint ground 271A and the joint joint ground 21B is short, and the gap 141b is less noticeable.

  Further, the inclination angle 5Y of the lower inclined joint surface 272A with respect to the plane parallel to the upper joint joint surface 212B is the same as the inclination angle 1Y of the rising inclined surface 22A with respect to the surface parallel to the upper joint joint surface 212B. Therefore, the upper and lower inclined surfaces of the joint 14B are the same, and the design is excellent.

  As described above, the outer wall plate 1B is also suitable for realizing a high water-stopping property in which the seam of the plate is less conspicuous in the use state.

(Embodiment 3)
The outer wall plate according to the third embodiment is an outer wall plate 1C shown in FIG. The outer wall plate 1C is different from the outer wall plate 1A in the shape of the joint ground 21C. In addition, the dimension of the lower side surface 3C in the thickness direction is smaller than the joint ground 21A due to the shape change of the joint ground 21C. Other configurations are the same as the outer wall plate 1A, and are denoted by the same reference numerals as the outer wall plate 1A.

Also in the case of the third embodiment, the joint seam 21C is formed along the lower edge 31c from the left edge to the right edge of the outer wall plate 1B to the left and right, and has a predetermined length in the vertical direction.
However, it differs from the first embodiment in that the joint ground 21C has a chamfer 211C on the lower end side 31c side. In the case of the third embodiment, the joint ground 21C includes an upper joint ground 212C formed on the upper end side and a chamfer 211C formed on the lower end side.

The upper joint ground 212C extends vertically downward from the lower end 31c side end of the rising inclined surface 22A.
In the case of the third embodiment, the inclination angle 6X of the upper joint ground 212C with respect to the plane parallel to the lower surface 3C is 90 °, and the upper joint ground 212C and the rising inclined surface 22A are outside the outer wall plate 1C. The formed angle 2X is 130 °.

  The chamfer 211C is located at the lowermost side of the design surface 2C, and extends from the lower end side end of the upper joint ground 212C toward the lower end side 31c of the lower side surface 3C on the lower oblique back side. , In a cross-sectional view. In the third embodiment, the left and right positions and left and right dimensions of the chamfer 211C are the same as those of the inclined ground 27A.

  As shown in FIG. 8, a dimension t9 from the lower edge 31c of the outer wall plate 1C to the rear surface is larger than a dimension t10 from the upper edge 41a of the outer wall plate 1C to the rear surface. Therefore, the lower end side 31c is deviated to the surface side more than the upper end side 41a.

  As shown in FIG. 8, the dimension t11 from the joint front end side 61a to the back surface is the same as the dimension t9 from the lower end side 31c to the back surface. The dimension t12 from the joint rear end side 71a to the back surface is the same as the dimension t10 from the upper end side 41a to the back surface.

  Also in the case of the third embodiment, as shown in FIG. 9, when the outer wall plate 1C is attached to the structural body such that the lower side surface 3C is on the lower side and the upper side surface 4A is on the upper side, the upper outer wall plate 1C and the lower side At the connection portion of the outer wall plate 1C, a joint joint having the joint surface 21C of the upper outer wall plate 1C as the joint bottom surface is formed by the joint joint surface 21C of the upper outer wall plate 1C and the inclined joint surface 27A of the lower outer wall plate 1C. 14C are formed.

  The lower edge 31c of the upper outer wall plate 1C is shifted more toward the surface side than the upper edge 41a of the lower outer wall plate 1C, but the lower edge 31c of the upper outer wall plate 1C is the lower edge of the bottom surface of the joint 14C. So it is not noticeable.

  In addition, since the lower end side 31c of the upper outer wall plate 1C biased toward the front side faces the inclined ground 27A of the lower outer wall plate 1C, the lower side edge 31c of the upper outer wall plate 1C biased toward the front surface side. The shadow formed by the lower edge 31c is smaller and less noticeable.

  Since the outer wall plate 1C is provided with the chamfer 211C on the lower end side 31c side of the joint ground 21C, the shadow formed by the lower end side 31c is smaller than the shadow formed by the lower end side 31a of the outer wall plate 1A. Less noticeable.

  Further, a void 141c opened on the surface side is formed in the joint joint 14C by the lower side surface 3C of the upper building board 1C and the inclined joint surface 27A of the lower building board 1C. The joint surface 21C of the upper outer wall plate 1C and the inclined joint surface 27A of the lower outer wall plate 1C are separated from each other with a gap 141c interposed therebetween, and the joint between the upper and lower plates is the lower edge of the upper outer wall plate 1C. Since it is formed on the back side than 31c, it is difficult for rainwater to enter the joint between the upper and lower plates, and it is excellent in waterproofness.

  Further, the outer wall plate 1C has a horizontal joint 12A inside the design surface 2C, and a shadow is formed on the horizontal joint 12A. Since the shadow formed on the horizontal joint 12A is more prominent than the shadow formed on the joint 14C, the seam between the upper and lower plates is less prominent.

  In addition, the inclination angle 6Y of the upper inclined joint ground 271A based on the plane parallel to the upper joint joint ground 212C is determined by the inclination angle 5Y of the lower inclined joint ground 272A with respect to the plane parallel to the upper joint joint ground 212C. Also, the distance between the upper inclined joint surface 271A of the lower outer wall plate and the joint joint surface 21C of the upper outer wall plate is short, and the gap 141c is less noticeable.

  The inclination angle 5Y of the lower inclined joint surface 272A with respect to a plane parallel to the upper joint joint ground 212C is the same as the inclination angle 1Y of the rising inclined surface 22A with respect to a plane parallel to the upper joint joint ground 212C. Therefore, the upper and lower inclined surfaces of the joint 14C are the same, and the design is excellent.

  As described above, the outer wall plate 1C is also suitable for realizing a high water-stopping property in which the seam of the plate is less noticeable in the use state.

(Embodiment 4)
The outer wall plate according to the fourth embodiment is an outer wall plate 1D shown in FIG. The outer wall plate 1D is different from the outer wall plate 1A in the shapes of the inclined ground surface 27B and the first inclined surface 23B. The dimension of the upper side surface 4B in the thickness direction is larger than that of the upper side surface 4A due to the shape change of the inclined joint surface 27B. The dimension of the inner side surface 24C in the thickness direction is smaller than the inner side surface 24A due to the shape change of the first inclined surface 23B. Other configurations are the same as the outer wall plate 1A, and are denoted by the same reference numerals as the outer wall plate 1A.

Also in the case of the fourth embodiment, the inclined ground surface 27B is a surface having a width of a predetermined length in the vertical direction and inclined with respect to the vertical direction.
However, unlike the first embodiment, the inclined joint surface 27B extends from the upper end side 41b toward the lower oblique surface without changing the inclination angle. In the case of the fourth embodiment, the angle 7X formed between the inclined ground 27B and the upper side 4B inside the outer wall plate 1D is set to be larger than the angle 1X formed between the joint ground 21A and the lower side 3A.
In the case of the fourth embodiment, the angle 7X at which the inclined ground 27B intersects with the upper side 4B is 140 °, and the angle 1X formed by the joint ground 21A with the lower side 3A is 90 °.

  The inclination angle 8Y of the inclined joint surface 27B with respect to the plane parallel to the joint ground 21A is the same as the inclination angle 1Y of the rising inclined surface 22A with respect to the plane parallel to the joint joint ground 21A. Is 50 °.

  As shown in FIG. 10, a dimension t13 from the lower edge 31a of the outer wall plate 1D to the rear surface is larger than a dimension t14 from the upper edge 41b of the outer wall plate 1D to the rear surface. Therefore, the lower end side 31a is deviated to the surface side more than the upper end side 41b.

Also in the case of the fourth embodiment, the first inclined surface 23B is a surface having a width of a predetermined length in the vertical direction and inclined with respect to the vertical direction. The vertical dimension and surface shape of the first inclined surface 23B are the same as the inclined joint surface 27B.
However, the first inclined surface 23B is different from the first embodiment in that the first inclined surface 23B extends from the rear end 71b of the inner surface 24C toward the lower oblique surface without any change in the inclination angle.
In the case of the fourth embodiment, the angle at which the first inclined surface 23B intersects with the inner side surface 24C is 40 °, and the inclination angle 7Y of the first inclined surface 23B with respect to a surface parallel to the joint ground 21A is 50 °. Has become.

  Further, as shown in FIG. 10, the dimension t15 from the joint front end side 61a to the back surface is the same as the dimension t13 from the lower end side 31a to the back surface. The dimension t16 from the joint rear end side 71b to the back surface is the same as the dimension t14 from the upper end side 41b to the back surface.

  Therefore, the dimension t15 from the joint front end side 61a to the back surface is larger than the dimension t16 from the joint rear end side 71b to the back surface. For this reason, the joint front end side 61a is shifted more toward the surface side than the joint rear end side 71b. Further, in the side joint 12C, a gap 121c opened to the front side is formed by the inner side surface 24C and the first inclined surface 23B. Therefore, the joint front end side 61a and the first inclined surface 23B face each other but do not abut.

  Also in the case of the fourth embodiment, as shown in FIG. 11, when the outer wall plate 1D is attached to the structural body such that the lower side surface 3A is on the lower side and the upper side surface 4B is on the upper side, the upper outer wall plate 1D and the lower side At the connection portion of the outer wall plate 1D, a joint joint having the joint surface 21A of the upper outer wall plate 1D as the joint bottom surface is formed by the joint surface 21A of the upper outer wall plate 1D and the inclined joint surface 27B of the lower outer wall plate 1D. 14D is formed.

  The lower edge 31a of the upper outer wall plate 1D is shifted more toward the surface side than the upper edge 41b of the lower outer wall plate 1D, but the lower edge 31a of the upper outer wall plate 1D becomes the lower edge of the bottom surface of the joint 14D. So it is less noticeable.

  Further, the lower end side 31a of the upper outer wall plate 1D biased toward the front surface side is opposed to the inclined joint surface 27B of the lower outer wall plate 1D. The shadow formed by the lower edge 31a is smaller and less noticeable.

  Further, a void 141d opened to the surface side is formed in the joint 14D by the lower surface 3A of the upper building board 1D and the inclined joint surface 27B of the lower building board 1D. The joint surface 21A of the upper outer wall plate 1D and the inclined joint surface 27B of the lower outer wall plate 1D are separated by a gap 141d, and the joint between the upper and lower plates is smaller than the lower edge 31a of the upper outer wall plate 1D. Since it is formed on the back side, it is difficult for rainwater to enter the joint between the upper and lower plates, and it is excellent in waterproofness.

  Further, also in the case of the fourth embodiment, the outer wall plate 1D includes an inner bottom surface 25A and a horizontal joint 12C having a first inclined surface 23B inside the design surface 2D. The inner bottom surface 25A has the same vertical dimension and surface shape as the joint ground 21A, and the first inclined surface 23B has the same vertical dimension and surface shape as the inclined ground 27B. The dimension t15 from the joint front end side 61a to the back side is the same as the dimension t13 from the lower end side 31a to the back side, and the dimension t16 from the joint back end side 71b to the back side is the dimension t16 from the upper end side 41b to the back side. It is the same as the dimension t14. Therefore, the gap 121c and the gap 141d have the same shape, and the horizontal joint 12C and the joint joint 14D have the same shape. Therefore, the shadow formed on the horizontal joint 12C and the shadow formed on the joint joint 14D are the same, and the seam of the plate is the same. Is less noticeable.

  The inclination angle 8Y of the inclined ground 27B with respect to the plane parallel to the joint ground 21A is the same as the inclination angle 1Y of the rising inclined plane 22A with respect to the plane parallel to the joint ground 21A. Therefore, the upper and lower inclined surfaces of the joint 14D are the same, and the design is excellent.

  As described above, the outer wall plate 1D is also suitable for realizing a high water-stopping property with less noticeable seams of the plate in the use state.

  The present invention is not limited to the above-described first to fourth embodiments, and can be appropriately modified and applied without departing from the spirit thereof.

  For example, the chamfer may be polygonal. Further, the chamfer of the joint ground may be provided so as to cross the outer wall material right and left. Further, the convex portion may have a shape crossing the outer wall material to the left and right, or may have a configuration having no vertical joint. Further, the design surface may have a shape that does not include a horizontal joint.

1A-1D: outer wall plate 2A-2D: design surface 3A-3C: lower surface 4A-4B: upper surface 5A: left side surface 6A: upper solid part 7A: lower solid part 11A: convex part 12A-12C ... side joint 13A ... Vertical joints 14A to 14D ... joint joints 21A to 21C ... joint joint grounds 211B to 211C ... chamfers 212B to 212C ... upper joint joint grounds 22A ... rising inclined surfaces 23A to 23B ... first inclined surfaces 231A ... upper first inclined surfaces 232A ... Lower first inclined surface 24A to 24C ... inner surface 25A to 25B ... inner bottom surface 251B ... chamfer 252B ... upper inner bottom surface 26A ... second inclined surface 27A to 27B ... inclined joint surface 271A ... upper inclined joint surface 272A ... lower inclined surface Ground surface 28A Vertical bottom surface 29A Left inclined surface 30A Right inclined surface 31a-31c Lower edge 41a-41b Upper edge 51a-51b Left edge 1A～61b ... joint front sides 71A～71b ... joint posterior end 121a-121c ... of the space 141a to 141d ... bonding joints horizontal joint gap C ... coking W ... water drops

Claims (9)

A building board having a first side on one side and a second side on the other side, and having a design surface on the front side,
While extending from a first edge, which is a boundary between the design surface and the first side surface, to a second edge, which is a boundary between the design surface and the second side surface, intersecting with the first side surface , A joint ground formed on the design surface,
The joint surface extends from the second end side to the first end side and intersects with the second side surface at an angle larger than an angle at which the joint ground intersects with the first side surface. And a sloped ground surface,
The building board according to claim 1, wherein the first end is offset toward the front side with respect to the second end.   The design surface is formed at an angle larger than an angle at which the joint ground intersects the first side surface from the end of the second end side of the joint ground toward the front surface, and The building board according to claim 1, wherein the building board has a rising slope that extends in an intersecting manner.   The building board according to claim 1, wherein the joint ground has a chamfer on the first end side. On the inclined joint surface, the inclination angle on the second end side and the inclination angle on the first end side are different,
The inclination angle of the inclined joint ground on the second end side with respect to the joint joint ground is larger than the inclination angle of the inclined joint ground on the first end side with respect to the joint joint ground. The building board according to claim 1, wherein: The design surface includes an inner joint joint inside the design surface,
An inner bottom surface extending at a predetermined distance from the first end side toward the second end side;
A first inclined surface located on the first end side with respect to the inner bottom surface and extending with a predetermined distance toward the first end side;
2. The building board according to claim 1, further comprising a second inclined surface that extends from an end of the inner bottom surface on the second end side and crosses the inner bottom surface. 3. The inner joint extends from an end of the inner bottom surface on the first end side in a direction opposite to a surface side, and further includes an inner side surface intersecting with the inner bottom surface and the first inclined surface,
A third edge, which is a boundary between the inner bottom surface and the inner surface, is biased toward the front side with respect to the fourth edge, which is a boundary between the first inclined surface and the inner surface,
The building board according to claim 5, wherein the inner side surface and the first inclined surface form a void that is open to the front side. It is a construction structure of a building board in which two building boards are built on a structural frame side by side,
The building board has a first side surface located on the lower side and a second side surface located on the upper side when side by side vertically, and has a design surface on the surface side,
Further, the building board extends from a first edge, which is a boundary between the design surface and the first side surface, to a second edge, which is a boundary between the design surface and the second side surface, and Intersecting with one side surface, a joint ground formed on the design surface;
From the second end side, extending toward the first end side, the joint surface intersects the second side surface at an angle larger than the angle at which the joint side intersects the first side surface. And a sloped ground formed,
At the joint between the upper building board and the lower building board, a joint is formed by the joint ground of the upper building board and the sloping ground of the lower building board,
At the joint, the first edge of the upper building board is offset toward the front side with respect to the second edge of the lower building board;
The first side surface of the upper building board and the second side surface of the lower building board are opposed to each other,
The construction structure of a building board, wherein an open space is formed on a surface side by the first side surface of the upper building board and the sloped ground surface of the lower building board. The building board has an inner joint inside the design surface,
An inner bottom surface extending at a predetermined distance from the first end side toward the second end side;
A first inclined surface located on the first end side with respect to the inner bottom surface and extending with a predetermined distance toward the first end side;
A second inclined surface extending from the end on the second end side of the inner bottom surface toward the surface side and intersecting with the inner bottom surface;
An inner side surface extending from an end of the inner bottom surface on the first end side in a direction opposite to a surface side, and intersecting the inner bottom surface and the first inclined surface;
A third edge, which is a boundary between the inner bottom surface and the inner surface, is biased toward the front side with respect to the fourth edge, which is a boundary between the first inclined surface and the inner surface,
The construction structure of a building board according to claim 7, wherein a void that is open on the front surface side is formed by the inner side surface and the first inclined surface.   The construction structure according to claim 8, wherein the gap formed in the joint joint and the gap formed in the inner joint have the same cross-sectional shape.

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