JP2000170349A - Building panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a building panel which prevents rainwater from running round toward the reverse side thereof. SOLUTION: For a square building panel 40N having shiplap joints at its periphery, a sheet member 70 desirably made of non-water-absorbent material is stuck at least to a position close to the lower end of its vertical joint butting surface 46B. Thereby, rainwater running through a vertical gap formed between exterior wall panels on the right and left is made to flow toward the surface side because the gap is filled up with the sheet member 70. Then, the rainwater is prevented from running round toward the reverse side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a square building board used for forming an outer wall of a building.

[0002]

2. Description of the Related Art Conventionally, this type of building board has a square shape, and is provided with joints on four sides, and a number of building boards are assembled and pasted together in the vertical and horizontal directions. Can be FIG. 5 shows an example of such a building board 40. The lower side portion and the left side portion have a horizontal upper solid pattern forming portion 41A and a vertical upper solid pattern forming portion 41B which constitute a confluent fruit. Are formed on the upper side and the right side, a horizontal lower mounting portion 44A and a vertical lower mounting portion 44B which form a consolidation solid are formed. Usually, caulking agents 45A and 45B are cast on the front side of the lower solid mounting portions 44A and 44B at a predetermined distance from the inner corner. Also, left and right end surfaces 46A, 4A, 4B on the front side of the building board 40
6B are surfaces that come into contact with each other when the building board 40 is assembled in the left-right direction, and are usually referred to as vertical joining butted surfaces.

FIG. 6 is a partial perspective view for explaining a state in which the building boards 40 shown in FIG. 5 are joined in the vertical direction. 4
1A) and the lower part of the building board 40B (the lower part mounting part 44A in the horizontal direction) are combined and joined. At this time, as shown in FIG. Due to the presence of 45A, a horizontal space S1 is formed. Since the upper and lower building boards 40 do not come into close contact with each other, a slight gap Sa is formed in the horizontal contact portion.
1 is formed, and the space S1 communicates with the outside air via the gap Sa1.

[0004] Further, as shown in FIG.
0A (and the lower building board 40B) is further connected to the outer wall board 40C in the horizontal direction (left and right direction). 41B) and the building board 40A (and the lower building board 40B).
7A, a vertical space S2 is formed in the joint portion due to the presence of the caulking agent 45B, as shown in FIG. 7A. The space S2 is a space that is continuous with the horizontal space S1 described above. At the time of assembling, the vertical joining butting surfaces 46A and 46B come to abut each other. However, since the left and right building boards 40 do not usually come into close contact with each other, a vertical gap Sa2 is formed at the joining portion. The space S2 is also in a state of communicating with the outside air via the gap Sa2.

[0005] Rainwater enters such spaces S1 and S2 through the gaps Sa1 and Sa2. However, the caulking agent 45A driven into the front side of the lower solid mounting portion 44A on the upper side of the lower building board 40B abuts against the back surface of the upper solid pattern forming portion 41A on the lower side of the upper building board 40A to seal. Since the portion is formed, the rainwater that has entered the horizontal space S <b> 1 does not circumvent the vertical direction and reach the back surface of the building board 40. Similarly, the rainwater that has entered the space S2 in the vertical direction does not detour in the lateral direction and go around to the back surface of the building board 40 due to the presence of the caulking agent 45B.

On the other hand, the rainwater that has entered the space S1 is discharged to the outer surface of the building board, and the rainwater that has entered the space S2 flows downward. By the way, as shown in FIG. 8, the fastener 30 is arranged at the joint of the building board 40,
The inner surface of the upward locking piece 33A of the fastener 30 is almost in close contact with the inclined surface of the actual mounting portion 42 of the upper building board 40A, and rainwater flowing down the vertical gap S2 is fitted on the upper side. It does not enter the inside of the joint 50A (there is a very small amount, if any), flows over the upper side of the upward locking piece 33A and flows further downward, and the surface side of the upward locking piece 33A and the downward locking piece 33B. And the back surface side of the upper solid pattern forming portion 41A of the upper building board 40A enter a space Sa having a substantially triangular cross section.

Also, as described above, the upper building board 40A
The back surface of the upper solid pattern forming portion 41A and the lower building board 40 on the lower side
The sealing portion is formed by the caulking agent 45A with the surface of the lower actual mounting portion 44A on the upper side of B,
The rainwater that has entered the space Sa having a substantially triangular cross section as described above does not flow downstream as it is, but temporarily stays in the space Sa. The retained rainwater moves in the space Sa in the left-right direction, leaks from the side edges of the locking pieces 33A, 33B, and the lower building board 40.
B flows out into the space S3 above the horizontal caulking agent 45A cast on the surface side of the lower mounting portion 44 on the upper side of B. As shown in FIG. 7B, the space S3 is a space that communicates with the back side of the building board 40 via the gap Sa3, and the rainwater that has entered there goes around to the back side of the building board 40, Damage.

[0008] An object of the present invention is to produce rainwater on the back surface of a building board as described above, which is generated when a building board having a conventional rectangular shape and having a joint on four sides is attached to a wall surface or the like. An object of the present invention is to provide an improved building board capable of avoiding wraparound.

[0009]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problem is a building plate having a square shape and having a jointed joint on four sides. A thin plate member preferably made of a non-water-absorbing material is attached to at least one of the lower ends.

According to the building board of the present invention, at least the vicinity of the lower end of the gap Sa2 formed in the vertical joining portion of the left and right building boards is preferably made of a non-water-absorbing material attached to the vertical joining projecting surface. It is practically closed by the thin plate member. Therefore, the gap Sa2 and the vertical space S
The rainwater flowing down from the upper part of 2 is positively discharged to the surface side immediately above due to the presence of the thin plate-shaped member. Therefore, the rainwater does not enter the space Sa formed by the fastener, and as a result, the rainwater that has entered through the gap is prevented from flowing around to the back side of the building board.

[0011] The thin plate member is optional, but has weather resistance,
Considering non-corrosiveness and the like, a resin material is preferable, and vinyl chloride is particularly preferable. If the material is not non-absorbent, it is desired to make it non-absorbent by painting. Also, if the building board is made from ceramic materials,
Instead of the thin plate-shaped member, it is also possible to simultaneously form the convex portion having the same shape as the thin plate-shaped member when forming the real part by cutting or the like.

It is desirable that the thickness of the thin plate member is equal to or slightly smaller than the vertical gap on the front surface formed when the building boards are assembled and joined together. Both the securing and the ease of assembling the building boards can be achieved at the same time. Further, the thin plate-like member is preferably a material that can be deformed by pressing or a material having elasticity, so that it is possible to adapt to an assembling error of the building board and the like, and the assembling work on the wall of the building board and the like is further improved. Facilitated.

The thin plate-like member may be attached over the entire length of the vertical joint abutting surface, but in order to achieve the intended purpose, at least near the lower end thereof, preferably,
What is necessary is just to mount it about 40 mm from the lower end of a vertical joining abutting surface, and it is recommended from a cost viewpoint.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a building board according to the present invention will be described below with reference to the drawings. The construction board according to the present invention may have the same configuration as a conventional construction board except for the presence or absence of a thin plate-shaped member. Therefore, in the following description, the building board 40N according to the present invention configured based on the building board 40 described based on FIG. 5 will be described, and the same members of the building board 40 shown in FIG. 5 will be described. The same reference numerals are given and detailed description is omitted.

FIG. 1 is a perspective view showing an entire construction board 40N according to the present invention, FIG. 2 is a perspective view showing a main part of the construction board 40N, FIG. 3 is a side view thereof, and FIG. 4 is a front view thereof. . As shown in the figure, the building board 40N starts from the lower end of the right vertical joining butted surface 46B, which becomes a vertical abutting surface when the building board 40N is assembled in the left-right direction, from the lower end of the upper solid pattern forming portion in the horizontal direction. A rectangular thin plate-like member 70 having a length L and a width W is attached over a portion slightly above the portion 41A. As shown in the drawing, it is a preferable embodiment that the upper end edge of the thin plate member 70 is formed as an inclined surface facing downward, and by doing so, as described later, the rainwater is discharged toward the surface side of the flowing rainwater. Becomes smoother.

The sheet member 70 is made of a non-water-absorbing material, and in this example, a vinyl chloride sheet is used. However, the present invention is not limited to this, and instead of the thin plate-like member, it is also possible to simultaneously form the convex portion having the same shape as the thin plate-like member when forming the real portion by cutting or the like. Also,
2 to 4, the width W of the thin plate member 70 preferably exceeds the height of the caulking agent 45B cast on the surface side of the lower solid mounting portion 44A.
Thickness is the vertical gap Sa2 (normally 0.8 mm or more) formed when a normal building board is assembled in the horizontal direction.
1.3 mm) or slightly narrower,
It may be about 0.5 mm to 1.3 mm.

Thus, the rectangular thin plate member 70
In the case where the building board 40N to which is attached is assembled, at least the vicinity of the lower end of the gap Sa2 formed at the vertical joining portion of the left and right building boards 40N, 40N is substantially formed by the thin plate member 70. Closed. Therefore, the rainwater flowing down from the upper portion of the gap Sa2 and the vertical space S2 is positively discharged directly above the thin plate member 70 toward the surface side of the building board 40N, as in the related art. ,
Rainwater does not enter into the space Sa defined by the fastener 30. As a result, it is possible to prevent rainwater that has entered from the gap from flowing around the back of the building board.

Although not shown, the right vertical joining butted surface 46B is provided.
A similar thin plate member 70 may be stuck to the left vertical joining abutting surface 46A at a position opposed to the thin plate member 70 stuck to the left side. In that case, it is desirable to use a thin plate member having a thickness of about half. The intended purpose can be achieved even if the upper edge of the thin plate member 70 is a horizontal plane.

Further, the thin plate-shaped member 70 may be manufactured as previously attached in a building plate manufacturing plant.
The building board may be attached at the construction site by using an adhesive or a double-sided tape. In the latter case, a construction method in which the thin plate member 70 is attached only to a building board to be attached particularly to a place where rainwater is expected to enter can be considered, which leads to cost reduction.

[0020]

According to the construction board of the present invention, the joining can be performed by simply attaching the thin plate-like member to the vertical joining protruding surface in the joint joint around the circumference without changing the shape of the conventional construction board at all. It is possible to reliably prevent rainwater that enters through the gap between the parts from flowing around the back surface of the outer wall plate. Further, since the conventional fastener can be used as it is, there is no increase in construction cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire construction board according to the present invention.

FIG. 2 is a perspective view showing a main part of the building board shown in FIG.

FIG. 3 is a side view of a main part of the building board shown in FIG. 1;

FIG. 4 is a front view of a main part of the building board shown in FIG. 1;

FIG. 5 is a perspective view showing an example of a conventional building board.

FIG. 6 is a partial perspective view illustrating a state in which the building boards shown in FIG. 5 are joined in a vertical direction.

7A is a cross-sectional view of a horizontal joint in the building board joint state shown in FIG. 6, and FIG. 7B is a cross-sectional view of a vertical joint.

FIG. 8 is a cross-sectional view illustrating a relationship between a building board and a fastening member.

[Explanation of symbols]

40N, 40 ... Building board with joints on four sides, Sa
2: gap formed in the vertical joint, S2: space formed in the vertical joint, 41A, 41B: upper solid pattern forming part, 44A, 44B: lower actual mounting part, 45A, 45B ... coking Agents, 46A, 46B: Left and right ends of vertical joining projection surfaces, 70: Thin plate member

Claims (5)

[Claims] An architectural board having a square shape and provided with joints on four sides, a thin plate-shaped member attached to at least a lower end of at least one of vertical joining abutting surfaces at both right and left ends. An architectural board characterized by the fact that there is. 2. The building board according to claim 1, wherein said thin plate member is made of a non-water-absorbing material. 3. The building board according to claim 2, wherein said thin plate member is made of a resin material. 4. The thin plate-shaped member having a thickness equal to or slightly smaller than a vertical gap on the front surface formed when the building boards are assembled and joined together. A building board according to any of the above. 5. The building board according to claim 1, wherein the thin plate-shaped member has a length of 40 mm or more from a lower end of the vertical joint abutting surface.