JPH0140896Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a construction board used as an interior wall material or ceiling board of a bathroom.

[Background technology]

In the case of the conventional construction board A', as shown in Fig. 1, a fitting recess 3' is provided on one side of the surface material 1, and a fitting protrusion 7' protrudes from the other side. Therefore, when a force is applied to the surface material 1 in the direction of concavely bending it forward as shown by the arrow, the filled foamed resin 8 will peel off from the surface material 1 on the fitting protrusion 7 side. There was a problem that the strength decreased. In addition, when joining, the fitting protrusion 7' of the building board A' is inserted into the fitting recess 4' of the adjacent building board A', but the fitting protrusion 7' and the fitting recess 4' that are in close contact with each other There was a problem with water such as hot water entering the room due to capillary action and leaking to the back.

[Purpose of invention]

The purpose of this invention is to ensure the strength of the filled foamed resin so that it will not peel off even if a force that causes it to be bent forward is applied, and that even when joined, the To provide a construction board that prevents water such as hot water droplets from leaking backwards due to capillary action.

[Disclosure of invention]

In the construction board of the present invention, the rear end of one side piece 2 of the surface material 1 having a U-shaped cross section and opening at the back is bent inward in a U-shape to form a fitting recess 3 which opens outward. form,
A recess 5 which is bent inward in a U-shape and opens outward is provided at the rear end of the other side piece 4 of the surface material 1.
The fitting protrusion 7 extends outward from the tip of the rear side piece 6, and the surface material 1 is filled with foamed resin 8. With this configuration, the above object can be achieved.

The present invention will be described below based on embodiments shown in the accompanying drawings. Reference numeral 1 denotes an aluminum surface material having a U-shaped cross section that opens to the back, and one side piece 2 has a fitting recess 3 that bends the rear end inward in a U-shape and opens outward. is forming. Rear side piece 9 of fitting recess 3
The nailing piece 10 is made to protrude further outward. The other side piece 4 of the surface material 1 has a rear end portion bent inward in a U-shape to form a concave portion 5 opening outward. The tip of the rear piece 6 of this recess 5 is bent forward at a substantially right angle, and a fitting protrusion 7 extends outward from the tip. Further, at the front end of the other side piece 4 from which the fitting protrusion 7 of the surface material 1 extends, an elastic piece 11 that protrudes outward is provided over the entire length. This surface material 1 is filled with foamed resin 8 made of urethane resin or phenol resin. In this case, since the foamed resin 8 is filled in the gap formed between the front piece 14 of the surface material 1 and the fitting recesses 3 and 5, it is assumed that a force that causes the surface material 1 to be concavely bent forward is applied. Also, the foamed resin 8 will not peel off. 1
5 is a back sheet. To join these architectural boards A, one of the architectural boards A should be joined as shown in Figure 3.
The nailing piece 10 of is nailed to a base material (not shown), and the fitting protrusion 7 of the other adjacent building board A is inserted into the fitting recess 5 to remove the front side piece of the fitting recess 7. 12, and the joint portion 13 is closed by the elastic piece 12. In this case, since the space B is formed by the recess 5, it is possible to prevent water such as hot water droplets from passing through the joint 13 and leaking backward due to capillary action.

[Effect of idea]

In the present invention, the rear end of one side piece of the surface material having a U-shaped cross section that opens rearward is bent inward in a U-shape to form a fitting recess that opens outward; Since the rear end of the other side of the surface material is bent inward into a U-shape and a recess is provided that opens outward, the foamed resin filled in the surface material fits into the front surface material. Since it also fills the gaps formed between the mating recesses and the recesses, the foamed resin will not peel off and its strength will be ensured even if a force that causes the surface material to bend forward is applied. Moreover, since the fitting protrusion extends outward from the tip of the rear side piece of the recess, the fitting protrusion can be inserted into the fitting recess of the adjacent architectural board during installation work. In this case, a space is formed at the joint by the recess, and water such as hot water droplets can be prevented from leaking backward from the joint due to capillary action.

[Brief explanation of drawings]

FIG. 1 is a partially broken perspective view showing a conventional example, FIG. 2 is a sectional view showing an embodiment of the present invention, and FIG. 3 is a sectional view showing the same in a joined state. A... Architectural board, 1... Surface material, 2... One side piece of the surface material, 3... Fitting recess, 4... Other side piece of the surface material, 5... Recess, 6... Recessed portion Rear side piece, 7...
Fitting protrusion, 8...foamed resin.

Claims (1)

[Scope of utility model registration request] The rear end of one side of the surface material having a U-shaped cross section that opens to the back is bent inward in a U-shape to form a fitting recess that opens outward. A recess is formed by bending the rear end inward in a U-shape and opening outward, and a fitting protrusion extends outward from the tip of the rear side piece of this recess, and foam is formed in the surface material. Architectural board filled with resin.