JPH11172884A - Board material for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board material for building wherein construction efficiencies can be improved so that the fitting work at the time of construction can be easily performed and a sliding operation can be easily carried out while the fitting strength is being maintained. SOLUTION: A siding material 10 is prepared by providing filling materials 14 in a nearly inverted trough-shaped surface material 11 and covering the materials 14 with a rear surface material 15. A male connection part 12 on one edge of the material 10 in the width direction thereof is formed from a wedge-shaped projection 121 comprising a horizontal projection 12b and an inclined projection 12c which are formed at the center of the material 10 in the thickness direction thereof and a piece 12e for nail driving at the lower end of the material 10. And a female connection part 13 is formed from a horizontal upper holding part 13b connected by a nearly circular guide recess 13c and a lower holding part 13d inclined downward so as to be opened. Thus, for connecting the materials 10, connection can be made by inclining the materials 10 utilizing the part 13d and the projection 121 having the part 12c, and thereafter a fine adjustment can be easily made since the contact area can be reduced by the parts 13b, 13d, and the parts 13b, 13d are connected by the guide recess 13c to provide a large holding force due to the spring effect of the recess 13c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building plate material, which is suitable for building a wall surface as a vertical or horizontal material as an interior / exterior material of a building, and particularly easy to fit at the time of construction. Yes, it is intended to improve the workability of a slide or the like for alignment while maintaining the fitting strength.

[0002]

2. Description of the Related Art A siding material called a siding material is used for the interior and exterior of a building. Is constructed.

[0003] Such a siding material, which is a plate material for building, is disclosed in, for example, JP-A-61-609 shown in FIGS.
As shown in Japanese Unexamined Patent Publication No. 60-260, both left and right edges of a surface material 1 such as a thin metal plate are bent to form a substantially reverse gutter shape, and male and female shapes fitted and connected to both left and right ends. While the connecting parts 2 and 3 are formed, a substantially trough-shaped part with the surface of the surface material 1 facing down is filled with a synthetic resin foam such as polyurethane as a filler 4 so as to cover the filler 4. It is configured by attaching a backing material 5 such as paper or aluminum foil.

As shown in FIG. 1 (b), the male and female connecting portions 2 and 3 for connecting the siding materials are connected in the thickness direction of the siding material. An intermediate portion is provided with a plate-shaped projecting piece 2a which is formed by projecting and folding the surface material 1, and a nailing piece 2b projecting further outward is formed at the lower end in the thickness direction via a U-shaped connecting portion 2c. On the other hand, the female connecting portion 3 is formed by forming a U-shaped fitting groove 3b which is continuously opened to the side at an upper end surface 3a obtained by bending the surface material 1 vertically.

Therefore, when the siding material is to be made, for example, horizontal, the male connecting portion 2 is disposed above, and the nailing piece 2b is fixed to the base material on the wall surface with a nail. The connection is performed by repeatedly connecting the flat projecting piece 2a of the portion 2 so as to cover the U-shaped fitting groove 3b of the female connection portion 3 of the siding material of the next stage.

[0006]

However, when connecting the siding material to form a wall surface, the fitting groove 3b of the female connecting portion 3 should be straightened down with respect to the projecting piece 2a of the male connecting portion 2. Therefore, there is a problem that it is difficult to perform the construction because it easily interferes with the base material for the wall.

When a wall surface is constructed using such a siding material, the male connecting portion 2 is connected to the female connecting portion 3 of the next stage so as to cover the male connecting portion 2 and then the siding is performed for positioning. It is necessary to fine-adjust the material by moving it to the left and right, but the protruding piece 2a of the male connecting portion 2 and the fitting groove 3b of the female connecting portion 3 are in close contact, making it difficult to make fine adjustments. , Normal siding material length (left and right length) is 4
There is also a problem that fine adjustment is more difficult because the length is as long as about m.

Further, in the state where the wall surface is constructed by using the siding material, when wind pressure or the like acts on the siding material, if the siding material is horizontal, the upper portion is fixed by nails driven into the nailing pieces 2b. , The lower part is supported by the fitting groove 3 b of the female connecting portion 3.
b is formed in a U-shape.
There is a problem that a force is applied with the top of the character portion as a fulcrum, and a large holding force cannot be obtained.

The present invention has been made in view of the problems of the prior art, and facilitates fitting at the time of construction, and improves the workability of a slide or the like for positioning while maintaining the fitting strength. It is an object of the present invention to provide an architectural plate material capable of achieving the following.

[0010]

According to a first aspect of the present invention, there is provided a building plate material for solving the problems of the prior art.
It is composed of a surface material, a filler and a back material, and is formed by bending the surface material into a substantially back gutter-like shape having a flat portion and male and female connecting portions at both ends in the width direction thereof. Is filled with the backing material, and the male connecting portion of the male and female connecting portions is provided at the middle in the thickness direction at one end in the width direction of the building plate material, and the surface material is A projection consisting of a horizontal projection projecting outward by bending and an inclined projection inclined inward from the tip of the horizontal projection is provided, and at the lower end in the thickness direction of one end, the projection is continuous with the inclined projection. It comprises a nailing piece that is folded back and protrudes further outward from the tip of the projection, while the female connecting portion is
At the middle in the thickness direction of the other end in the width direction of the architectural plate material, an upper clamping portion in which the surface material is bent inward, and the tip is inclined downward more than the inclination of the inclined protruding portion, and the tip is The lower surface is formed in a substantially keyhole shape with a lower holding portion having a length protruding outward in the width direction of the plate material and an arc-shaped guide concave portion larger than a semicircle connecting the upper and lower holding portions. While one end of the material is positioned so as to be wound inside the female connecting portion, when the male connecting portion and the female connecting portion are connected, the tip of the projection of the male connecting portion and the female The structure is such that a gap is formed between the connecting portion and the guide recess.

[0011] According to this building plate, the horizontal projecting portion that projects the male connecting portion outwardly from the male and female connecting portions at both ends in the width direction of the building plate consisting of the front surface material, the filler, and the back surface material. A wedge-shaped projection is formed with the inclined protruding portion that is inclined toward the other side, and a nailing piece that is continuously folded back to the inclined protruding portion and protrudes further outward from the tip of the projection is formed, and one female shape is formed. The connecting part is an upper holding part obtained by bending the surface material inward, a lower holding part inclined downward and protruding outward from the upper holding part, and a substantially circular semi-circle connecting these upper and lower holding parts. A larger arc-shaped guide concave portion is formed in a substantially key shape in which the female concave portions are connected to each other. At the time of connection, the lower holding portion of the female connecting portion projects outward and is inclined and the male connecting portion is formed. The connection can be easily made by using the inclination of the projection. After the is to facilitate fine adjustment such as positioning by reducing the contact area by the upper and lower clamping portion,
These upper and lower clamping parts are connected by a substantially circular guide recess so that a large holding force is obtained by a ring-shaped spring effect, so that the influence of thermal expansion after construction can be absorbed by the gap between the tip of the projection and the guide recess. is there.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the surface material is provided above the horizontal projecting portion of the male connecting portion. Forming an upper inclined surface which is bent by being inclined in the thickness direction and forming a lower inclined surface which is continuous with the upper inclined surface at a base end of the inclined protruding portion and forms the male connecting portion. It is characterized by being formed in a substantially inverted shape.

According to this construction plate, an upper inclined surface and a lower inclined surface are formed above and below the wedge-shaped projection of the male connecting portion, respectively. Adhesion of dust and the like can be prevented, and the connection operation can be easily performed by fitting the tip of the lower holding portion at the time of fitting connection on the lower inclined surface.

Further, according to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the filling material is obtained by injecting a foaming undiluted solution and foaming and solidifying the filler. The inside of the projection of the connecting portion is also filled.

According to this construction plate material, in addition to the strength improvement due to the shape of the male connecting portion having a wedge-shaped projection, the strength is further increased by filling the inside of the projection with a foam.
The heat insulation performance of the fitting connection can be improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 relate to an embodiment of a building plate according to the present invention. FIG. 1 is a plan view and a cross-sectional view taken along the line AA, and FIG. 2 is an explanatory view showing a connecting step when constructing a wall surface.

The siding material 10 which is a building plate material
Is a long surface material 1 as shown in FIG.
1 Both ends in the longitudinal direction are bent with a forming roll or the like to form a substantially gutter-like shape with the surface facing down (a substantially inverted gutter-like shape when the surface is facing up), and are fitted to both ends. While the male and female connecting portions 12 and 13 to be connected are formed, a filler 14 such as a polyurethane foam is provided in a substantially trough-shaped interior of the surface material 11, and a back material 15 such as paper or aluminum foil is provided. The siding material 10 is cut into a siding material 10 by being attached to cover the filler material 14 such that one end edge thereof is located inside the female connecting portion 13 so as to cover the filler material 14.

As the surface material 11 of the siding material 10, a metal plate such as iron, aluminum, stainless steel, or copper or a synthetic resin plate is used, and a surface-treated steel plate, a steel plate plated with a zinc-nickel alloy, an aluminum-zinc alloy Steel plate, stainless steel clad steel plate, aluminum plate, aluminum alloy plate, steel plate, rubber and synthetic resin film clad vibration damping plate, etc. May be applied.

Further, as the filler 14 which is bonded or foamed and integrated into the concave portion on the back side of the surface member 11 formed in a substantially reverse gutter shape with the surface thereof facing upward, heat insulation, raising the bulk, reinforcement, fire prevention, Those having functions such as are selected as necessary, but usually, synthetic resin foam, glass wool, sizing insulation board, foamed gypsum, gypsum, rock wool, cement, calcium carbonate, calcium silicate and the like are used. .

In particular, as the synthetic resin foam, polyurethane foam, polyethylene foam, polystyrene foam and the like are used. Among them, hard polyurethane foam, polyisocyanurate foam, and phenol foam which are adhered and integrated with the surface material 11 during foam solidification are used. It is preferably used.

Further, the backing material 15 includes a filler 14.
It improves fire protection, productivity, packing, etc., for example, paper such as kraft paper and calcium carbonate mixed paper, asphalt felt, metal foil such as aluminum and iron, or copper, synthetic resin A film, a sheet, a rubber sheet, a cloth sheet, a laminate thereof, or the like can be used.

The back material 15 is formed in a substantially trough-like shape in the manufacturing process of the siding material 10. Then, in the case where a foaming stock solution of a synthetic resin foam is injected into the recess with the opening facing upward and solidified by foaming to form the filler 14, one end edge of the back material 15 is connected to the male-female connecting portion 12, By being located inside so as to be sandwiched (entangled) by 13, the synthetic resin foam can be prevented from leaking out.

In the siding material 10 made of such a material, the male and female connecting portions 12 and 13 are used to improve workability, increase holding power in a connected state, and improve waterproofness. Both the male connecting portion 12 formed at one end of the material 10 and the female connecting portion 13 formed at the other end are formed by continuously bending the surface material 11.

The male connecting portion 12 formed at one end of the siding material 10 is formed by bending the surface material 11 so that the upper inclined surface 12a has the thickness of the siding material 10 as shown in the right end of FIG. The horizontal protruding portion 12 is formed to extend outwardly (rightward in the drawing) from the upper inclined surface 12a in parallel with the flat portion 11a of the surface material 11 and bent.
b and an inclined protruding portion 1 whose tip is turned further inward.
2c, a wedge-shaped projection 121 is formed.
The lower end surface 12d is formed by bending the base end portion of the inclined protruding portion 12c, which is formed as follows. A nail driving piece 12e protruding longer than the projection 121 is formed.

In the siding material 10 of this embodiment, the upper inclined surface 12a is constituted by a front inclined surface, and the inclined projecting portion 12c and the lower inclined surface 12d at the base end of the nailing piece 12e. Are formed as front inclined surfaces which are flush with the upper inclined surface 12a.
The horizontal protruding portion 12b and the inclined protruding portion 12c protruding from a and 12d have a substantially inverted shape.

The upper inclined surface 12a and the lower inclined surface 1
The shape of 2d is not limited to the front inclined surface, and may be another shape such as a vertical surface. However, the shape of the joint portion is determined by the relationship between the upper inclined surface 12a and the female connecting portion 13, and In this case, the front surface is inclined downward, so that rainwater or the like can be prevented from accumulating on the front surface and dirt can be prevented. On the other hand, by making the shape of the lower inclined surface 12d a front inclined surface, the lower inclined surface 12d can be used to guide the fitting by following the distal end of the female connecting portion 13.

Further, the siding material 1 of this embodiment
In the case of No. 0, a rigid polyurethane foam is used as the filler 14, and a foaming undiluted solution is injected into the surface material 11, covered with the back material 15, and sandwiched between the upper and lower conveyors. It is laminated and integrated. When a rigid polyurethane foam or the like that foams and solidifies between the front surface material 11 and the back surface material 15 is used as the filler 14,
It is preferable to fill the inside of the protrusion 121 because the strength of the male connection portion 12 is increased, but it is not necessary to completely fill the tip of the protrusion 121. Note that one end edge of the back material 15 provided so as to cover the filler 14 may be positioned so as to be wound inside the male connecting portion 12 or may be provided so as to cover the nailing piece 12e. In the drawing, it is located at the same position as the tip of the projection 121.

The tip of the nailing piece 12e is bent upward or downward to form an arcuate bent portion 12f so that it can be safely handled when the siding material 10 is transported or constructed. .

The female connecting portion 13 formed at the other end of the siding material 10 is formed by bending the surface material 11 to form an upper end surface portion 13a, as shown as a left end portion in FIG. From the end face portion 13a to the flat portion 11 of the surface material 11
An upper holding portion 13b is formed by being bent inward (rearward) in parallel with the upper holding portion 13b. A guide recess 13 formed by bending an inner end of the upper holding portion 13b into a substantially circular shape.
c so as to be continuous with the upper end of the opening.
A lower holding portion 13d inclined downward is formed at the lower end of the opening 3c so as to extend the opening continuously.

The back material 15 of the female connecting portion 13 is positioned so that one end edge thereof is wound inward so as to prevent problems such as turning up during fitting connection.

The tip of the lower holding portion 13d has a length protruding outward from the upper end surface portion 13a, so that the connecting operation can be performed while watching the protruding portion at the time of fitting connection. The tip of the lower holding portion 13d is bent upward or downward to form an arc so that it can be safely handled when transporting or constructing the device 10. In the female connecting portion 13, the arc-shaped bent portion is connected to the guide portion 13.
e, and the siding material 10 is inclined toward the operator in front of the worker by fitting the nailing piece 12e and the lower end face 12c at the time of fitting connection with the male connection portion 12, thereby facilitating the connection operation. It is like that.

The female connecting portion 13 has a shape in which a horizontal upper holding portion 13b and a downwardly inclined lower holding portion 13d are connected by a substantially C-shaped guide recess 13c. The distance between the portion 13b and the lower holding portion 13d is such that the front end of the opening is wide and gradually narrows, and the lower holding portion 13d is gradually narrowed.
It is formed in a substantially keyhole shape in a state where it becomes the narrowest at the connecting portion between the guide recess 13c and the guide recess 13c and expands again in the guide recess 13c.

Then, the horizontal projection 12b and the inclined projection 12c of the male coupling part 12 are sandwiched by the narrowest part between the upper clamping part 13b and the lower clamping part 13d of the female coupling part 13. Because of the connection, the lower holding portion 13d on the insertion side is formed along the inclined surface of the fixed-side inclined projection 12c.
Is inserted, the insertion work becomes easy, and since there are few contact portions in the fitted state, it is easy to slide in the length direction, and the alignment becomes easy.

After the siding material 10 is connected to form a wall surface, if a typhoon or the like is subjected to strong wind and rain, a negative pressure is generated on the wall surface and the siding material 10 tends to peel off. The spring effect (substantially C-shaped shape effect) due to the shape of the lower holding portion 13d, and the tip of the lower holding portion 13d has a nailing piece 12e or a lower inclined surface 12
d, and the connecting portion between the lower holding portion 13d and the guide recess 13c contacts the horizontal protruding portion 12b and the inclined protruding portion 12c so as to maintain a firm fit. Further, when the joint portion in the fitted state is exposed to wind and rain, rainwater tends to enter inside due to a capillary phenomenon in a gap between the horizontal protruding portion 12b and the upper holding portion 13b. Recess 13c
The capillary action can be cut off in the space formed by, and even if the rainwater gets over the tip of the projection 121 due to the wind pressure, it stops in this space and does not reach the backing material on the back side. If the rainwater gets over the tip of the protrusion 121, and if one edge of the back material 15 is located near the tip of the lower holding portion 13d, the rainwater may penetrate into the back material 15 or the filler 14; Is located inside the female connecting portion 13, there is no such fear.

The downward inclination angle of the lower holding portion 13d of the female connection portion 13 is preferably 5 to 45 degrees with respect to the flat portion 11a. If the angle is less than 5 degrees, the upper end surface 13a of the female connecting portion 13 will be horizontally projected when the connecting portion is tilted forward.
2b, the upper end surface 13a may be scratched.
d becomes nearly horizontal, and the connecting operation may be difficult depending on the length relationship of the lower holding portion 13d. Lower clamp 1
When the inclination of 3d is extremely large, for example, 90 degrees (vertical), the strength of itself is increased, but the fitting holding force against the negative pressure is exclusively caused by the effect of the guide recess 13c.
On the other hand, the same applies to 0 degree (horizontal).
5-4, in order to exhibit a spring effect by the shapes of the guide recess 3c, the guide recess 13c and the lower holding portion 13d to enhance the connection workability.
Five degrees is preferred.

On the other hand, the inclined projecting portion 12c of the male connecting portion 12
The inclination angle is slightly smaller than the lower holding portion 13d of the female connecting portion 13 to form a gap, thereby enabling sliding for alignment. The angle of the inclined protrusion 12c may be about 2 degrees.

In the siding material 10, the contact points of the two in the connected state are the corner between the base end of the nailing piece 12e and the lower inclined surface 12d, and the tip of the lower holding portion 13d. The effective width of the siding material 10 is determined. In the siding material 10, as shown in the connection process diagram of FIG. 2, from the bottom of the guide recess 13 c of the female connection portion 13 to the tip of the lower holding portion 13 d. L13 is the length L from the lower inclined surface 12d which is one of the base end surfaces of the male connecting portion 12 to the tip of the horizontal protruding portion 12b.
12 and longer than the horizontal projection 12b in the connected state.
A gap is formed between the groove and the guide recess 13c.

The horizontal protrusion 12b and the guide recess 13c
By forming a gap between them, when external force such as wind pressure is applied, it prevents deformation around the contact point,
Thermal expansion such as solar radiation can be absorbed.

Further, in this siding material 10, as shown in FIG.
Since the female connecting portion 13 is connected and fitted on the upper portion e, a step portion 14a is formed in the filler 14 of the siding material 10 of the female connecting portion 13 so that the thickness is reduced. Piece 1
2e so as not to interfere.

Further, in the siding material 10, a concave groove 16 equivalent to the joint formed at the connecting portion is formed at the center in the width direction, and the depth thereof is equal to the upper inclined surface 1 of the male connecting portion 12.
2a, the side surface 16a on the female connecting portion 13 side is formed in parallel with the upper inclined surface 12a of the male connecting portion 12, while the side surface 16b on the male connecting portion is formed on the female connecting portion 1.
3 is formed in parallel with the upper end surface portion 13a.

As a result, the concave groove 16 has the same shape as the joint formed by the connection between the male connecting portion 12 and the female connecting portion 13, and the wall formed by connecting the siding members 10 having a half width is formed. It can be finished to the same appearance.

It is to be noted that the provision of the concave groove 16 is optional, and that the siding members 10 of different widths may be connected to each other to provide an eccentric position, or a plurality of siding members 10 may be provided at the eccentric position. A concave groove different from the joint shape may not be provided as in the case of the siding material 10 shown in FIG.

Further, in the connected state, the female connecting portion 1
3 and the upper inclined surface 12a of the male connecting portion 12 may be connected so as to be in contact with each other without joints.

Next, when, for example, a laterally outer wall surface is constructed using the siding material 10 configured as described above, the lowermost siding material 10 is connected as shown in FIG. After fitting with the female connection portion 13 down using a start metal (not shown) or the like, the nailing piece 12e of the upper male connection portion 12 is fixed to the base material on the wall surface with a nail.

Thereafter, as shown in FIG. 2 (a), with the female connecting portion 13 of the siding material 10 of the next stage turned downward, the tip of the lower holding portion 13d is turned into the inclined projecting portion 12 of the male connecting portion 12.
Insert it inclining forward to enter between c and the nailing piece 12e.

Then, while the siding material 10 is tilted, the guide portion 13e at the tip of the lower holding portion 13d is inserted into the nail driving piece 1.
Push down until it contacts the inner surface of 2e (see FIG. 2 (b)).

When the siding material 10 is further erected, the guide portion 13e at the tip of the lower holding portion 13d follows the inner surface of the nailing piece 12d while following the same, and the lower holding portion 13d becomes narrower. The part that goes is along the inclined surface of the inclined protruding portion 12c and comes into contact with the outer surface of the lower inclined surface 12d of the male connecting portion 12 (FIG. 2).
(C)).

When the guide 13e at the end of the lower holding portion 13d is further raised, the male connecting portion 12e
When the siding material 10 is in a vertical state, it is completely connected (see FIG. 2 (d)).

After the female connecting portion 13 of the siding material 10 is fitted and connected to the fixed male connecting portion 12 in this way, the lateral position of the siding material 10 is adjusted, and the nailing of the upper male connecting portion 12 is performed. The wall 12 is constructed by repeatedly fixing the piece 12e to the base material of the wall with a nail and similarly fixing the siding material 10 of the next stage.

As described above, when the siding material 10 of the next stage is fitted and connected, the conventional siding material shown in FIG. In this way, the upper end face 3a of the female connecting portion comes into contact with the protruding piece 2a, and it is difficult to fit the protruding piece 2a. One end of the lower holding portion 13d in the longitudinal direction is easily engaged with the projection 121 even in the case of human work, and the insertion of the lower holding portion 13d is facilitated. The connection can be easily performed simply by standing up along the inclined surface, and the connection can be easily performed as compared with the related art.

In the state where the female connecting portion 13 below the siding material 10 in the next stage is fitted and connected to the male connecting portion 12 in the fixed state in the preceding stage, the wedge-shaped projections 121 are provided.
Is sandwiched between the upper and lower holding portions 13b and 13d.
The inclination protruding portion 12c is smaller than the inclination angle of the lower holding portion 13d.
The angle of is reduced so that a gap is formed,
Since the contact area is smaller than in the case where the projection is brought into contact with the entire periphery of the conventional U-shaped fitting groove and connected, the siding material 10 of the next stage can be easily moved in the lateral direction. Length adjustment is possible.

Further, the siding material 1 in the connected and fixed state
In the case of 0, the upper part is fixed with nails, but the lower part is supported by the male and female connecting parts 12 and 13. However, when wind pressure or the like acts, the upper and lower holding parts 13b and 13d are substantially circular guides. Since they are connected via the recess 13c, a spring force acts on the upper and lower holding portions 13b and 13d so as to narrow each other by the guide recess 13c.
Since a gap is formed between the groove 2b and the guide recess 13c, a larger holding force can be obtained compared to a conventional U-shaped vertex which is bent to be a fulcrum. As a result, the connection strength is high and a thin surface material can be used.

[0053]

As described above, according to the embodiment, the width of the architectural plate made of the surface material, the filler and the back surface material can be improved. A wedge-shaped projection is formed by a horizontal projection protruding outward and an inclined projection inclined inward, of the male coupling section of the male and female coupling sections at both ends in the direction, and is continuously folded back to the inclined projection. The female connecting part is formed from an upper holding part in which the surface material is bent inward, and a female part is bent downward from the upper holding part. The lower holding portion protruding outward and the substantially circular arc-shaped guide concave portion larger than the semicircle connecting the upper and lower holding portions are formed in a substantially key shape in which the connecting portions are connected. Occasionally, the lower holding part of the female connection part projects outward and is inclined It can be easily connected by utilizing the inclination of the male and female connecting parts. After connection, fine adjustments such as positioning can be made easier by reducing the contact area by the upper and lower holding parts. Are connected to each other by a substantially circular guide recess, so that a large holding force due to a ring-shaped spring effect can be obtained, and the influence of thermal expansion or the like after construction can be absorbed by the gap between the tip of the projection and the guide recess.

According to the constructional plate material of the second aspect of the present invention, the upper inclined surface and the lower inclined surface are formed above and below the wedge-shaped projection of the male connecting portion, respectively. In this case, it is possible to prevent rainwater and dust from adhering in the case of being laid horizontally, and to easily perform the connecting operation by fitting the lower holding portion when fitting and connecting the lower inclined surface.

Further, according to the third aspect of the present invention, in addition to the strength improvement by the wedge-shaped projection of the male connecting portion, the strength is further enhanced by filling the inside of the projection with a foam. And the heat insulating performance of the fitting connection portion can be improved.

[Brief description of the drawings]

FIG. 1 is a lateral plan view and an AA cross-sectional view according to an embodiment of a building plate material of the present invention.

FIG. 2 is an explanatory view showing a connecting step when constructing a wall surface according to an embodiment of the building plate material of the present invention.

FIG. 3 is an explanatory diagram of a manufacturing process according to an embodiment of the building plate material of the present invention.

FIG. 4 is a cross-sectional view of a conventional siding material and an enlarged cross-sectional view of a connecting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Siding material (building board material) 11 Surface material 11a Flat part 12 Male connection part 12a Upper inclined surface 121 Projection 12b Horizontal projection part 12c Inclined projection part 12d Lower inclined surface 12e Nail driving piece 12f Bent part 13 Female connection Part 13a Upper end face part 13b Upper holding part 13c Guide concave part 13d Lower holding part 13e Guide part 14 Filler 14a Step part 15 Back material 16 Concave groove (intermediate joint) 16a Side face on female connecting part side 16b Male connecting part side Side of

Claims (3)

[Claims] 1. A surface material, a filler, and a back material, which are bent to form a substantially back gutter having a flat portion and male and female connecting portions at both ends in the width direction. An architectural plate that is filled with the filler and covered with the back material, wherein the male connecting portion of the male and female connecting portions is located at a middle portion in the thickness direction at one end in the width direction of the building plate. A projection consisting of a horizontal projection projecting outward by bending the surface material and an inclined projection inclined inward from the tip of the horizontal projection. And a nailing piece that is continuously folded back to the portion and protrudes further outward from the tip of the protrusion. On the other hand, the female connecting portion is a middle portion in the thickness direction of the other end of the building plate width direction. The upper holding portion formed by bending the surface material inward, and the inclination of the inclined protruding portion. A lower holding portion having a length that is more downwardly inclined and whose tip protrudes outward in the width direction of the architectural plate, and an arc-shaped guide recess larger than a semicircle connecting the upper and lower holding portions. When the male connector and the female connector are connected to each other while the one end of the back material is positioned so as to be wound inside the female connector, the male connector is connected to the female connector. An architectural plate material having a structure in which a gap is formed between the tip of the projection of the male connection portion and the guide recess of the female connection portion. 2. An upper inclined surface is formed above the horizontal projecting portion of the male connecting portion by bending the surface material in a thickness direction of the building plate material to be inclined. The architectural plate material according to claim 1, wherein a lower inclined surface that forms one plane with the upper inclined surface is formed continuously from the base end, and the male connecting portion is formed in a substantially inverted shape. 3. The filler according to claim 1, wherein the filler is formed by injecting an undiluted foam solution and solidified by foaming, and is also filled inside the projection of the male connecting portion. Building boards.