JPH0321385Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention uses low-density materials such as glass wool and rock wool (that is, open-cell materials and porous materials) that have excellent sound-absorbing and heat-insulating properties to create a thin wall. The present invention relates to an interior material substrate in which a reinforcing material is fixed to an end of a constructed interior material substrate main body, and a tongue-and-groove recess for connection with an adjacent end of another substrate main body is formed in the reinforcing material.

[Conventional technology]

As shown in FIG. 2, a conventional interior material board of this type has a connection tongue recess 2 at the end of the board main body 1.
At the same time, the end portion of the substrate body 1 forming the tongue recess 2 was impregnated with resin to reinforce the substrate body 1.

[Problem that the invention attempts to solve]

However, when using the conventional interior material substrate, the impregnated resin often shrinks, so the dimensional accuracy of the substrate is low. Furthermore, from the aspect of reinforcement, since a hard resin is used as the impregnated resin, when the resin-impregnated reinforced portion is nailed and fixed to the base, the resin-impregnated reinforced portion is likely to break due to the nailing. However, even if a nail is driven into an unreinforced part, the nail cannot actually be attached to the base because the nailed part does not have the strength to hold the nail. In short, it lacks ease of installation.

An object of the present invention is to eliminate such inconveniences.

[Means to solve the problem]

The characteristic structure of the interior material substrate according to the present invention is that a nailing part is formed on one of the opposed pieces for forming a tongue recess in the reinforcing material, and the nailing part has a structure in which a hard layer and a soft layer are superposed. The effects of this are as follows.

(Function) In other words, by fixing the reinforcing material to the edge of the board, the main body of the board and the tongue recess are reinforced.
Shrinkage and deformation of the board body due to reinforcement can be prevented. Furthermore, by effectively utilizing the fact that the reinforcing material is separate from the board body and has a high degree of freedom in design and manufacturing, one of the facing pieces for forming the tongue recess in the reinforcing material is provided with a nailing part for fixing it to the base. the nailing portion is formed, and the nailing portion is
Since it has a structure in which a hard layer and a soft layer are polymerized, even when a nail is driven into the nailing part, the soft layer prevents cracks and cracks in the hard layer, making it difficult for cracks to occur in the nailing part. After nailing, the nailing portion can be hidden from the outside by fitting the connection portion of another adjacent board main body into the tongue recess.

[Effect of idea]

Therefore, according to the present invention, cracking of the nailed part due to nail driving can be prevented, so that it can be securely and strongly attached to the base by nailing.
In addition, it has been possible to provide an interior material substrate that has excellent dimensional accuracy and can improve the appearance even after construction because the nailed portions are not visible from the outside.

〔Example〕

This is an interior material board that has sound absorption and heat insulation properties and is fixed to the base A (ceiling base or wall base) by nailing. An interior material substrate main body ¹ is provided, which is made of a thin wall (about 25 mm) of glass wool, rock wool, etc.
It is constructed by fitting and adhering reinforcing materials 3, 3' made of hard synthetic resin (vinyl chloride, acrylic, etc.) on both ends of the board, respectively, to form connection parts 2, 2' with the adjacent board main body 1. There is.

The connecting portion 2 on the one end side is a tongue-and-groove recess, and
One of the opposing pieces 3A and 3B forming the tongue recess 2 has a thickness of approximately 0.5 to 5 mm, and a nailing portion is formed in the one 3A. This nailing part has a two-layer structure in which a hard synthetic resin layer 3a and a soft synthetic resin layer 3b are polymerized, that is, it is configured in a state that allows nailing for fixing to the base A without causing cracks. ing. Both the synthetic resin layers 3a and 3b are integrally molded at the same time, and
The soft synthetic resin layer 3b is configured to have a thickness of 30 to 70% of the total thickness to ensure prevention of cracking due to nailing.

4 is a skin material (glass cloth, acrylic fiber, vinyl chloride film, sprayed ceramic sheet, etc.).

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment. FIG. 2 is a cross-sectional view showing a conventional example. 1... Board main body, 2... Connecting tongue recess, 3...
...Reinforcing material, 3A, 3B... Opposing piece, A... Base.

Claims (1)

[Claims for Utility Model Registration] 1. A reinforcing material 3 is fixed to the end of an interior material board main body 1 made of a low-density material in a thin state, and another adjacent board main body 1 is fixed to the reinforcing material 3. In the interior material substrate in which the tongue recess 2 for connection with the end portion is formed, a nailing portion is formed on one 3A of the facing pieces 3A and 3B for forming the tongue recess in the reinforcing material 3, and the nailing portion An interior material substrate having a structure in which a hard layer and a soft layer are polymerized. 2. The interior material substrate according to claim 1, wherein the nailing portion has a two-layer overlapping structure of a hard layer and a soft layer, and the hard layer is disposed on the base A side. 3. Utility model registration claim 1 or 2, in which the reinforcing material 3 is an integrally molded product of hard synthetic resin.
The interior material substrate described in section. 4. The interior material substrate according to any one of claims 1 to 3, wherein the low-density material is glass wool.