JPH044096Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a stair tread that constitutes a staircase.

[Background technology]

Conventionally, materials such as wood, aluminum, and metals such as steel have been used for stairs installed in houses. In particular, the stairs are made of relatively heavy laminated plywood, making them heavy, difficult to transport, and difficult to construct.

[Purpose of invention]

The purpose of this invention is to provide a stair tread with reduced weight.

[Disclosure of invention]

The stair tread of this invention is made of a plate-shaped lightweight core material,
The present invention includes reinforcing materials disposed on both sides of the lightweight core material, and decorative plywood covering at least the surface and one side of a plate made of the lightweight core material and the reinforcing materials.

In this way, according to this invention, the weight of the stairs can be reduced because the constituent materials of the stair treads are plate-shaped lightweight core materials instead of laminated plywood. As a result, transportation becomes easier and workability is improved.

In addition, it can be produced at a lower cost than conventional laminated plywood.

Embodiment An embodiment of this invention will be described based on FIG. That is, as shown in FIG. 1, this stair tread includes a plate-shaped lightweight core material 1 (honeycomb core), reinforcing materials 2 and 3 arranged on both sides of the lightweight core material 1, and the lightweight core material 1. and a decorative plywood 4 that covers at least the surface and one side of the plate made of the reinforcing materials 2 and 3.

The reinforcing material 2 is a reinforcing crosspiece provided along the longitudinal direction of the lightweight core material 1 on one side of the plate-shaped lightweight core material 1 (corresponding to the back of the treadle);
The reinforcing material 3 is a reinforcing crosspiece that also serves as a riser board, and constitutes a front riser part in a state where stairs are formed. This reinforcing material 3 is installed along the longitudinal direction of the lightweight core material 1 on the other side (corresponding to the front part of the tread) of the lightweight core material 1, and its lower part is suspended below the thickness of the lightweight core material 1, and the inner surface Stepped portion 3a formed in
It is formed by receiving the side edge of the lightweight core material 1. For this reason, the treadle can withstand heavy loads and shocks. Further, the front corner portions 6 and 7 of the reinforcing member 3 are chamfered. The height of the conventional reinforcing material 3 is shown by a dashed line a in FIG. 1, but as shown in FIG. The strength of the riser part can be increased compared to the above.

Furthermore, with the reinforcing materials 2 and 3 installed on both sides of the lightweight core material 1, the reinforcing material 3 is inserted from the upper surface of the plate made of the lightweight core material 1 and the reinforcing materials 2 and 3 through the front surface of the reinforcing material 3. The lower surface is integrally covered with a decorative plywood 4 made of vinyl chloride resin film.
In addition, the lower surface of the lightweight core material 1 is made of raw plywood 5 that is not decorated.
to increase the strength of the lightweight core material 1.

In this way, instead of the laminated plywood conventionally used as a component material for stair treads, we have developed a lightweight core material 1 in the form of a plate.
By using the above steps, it is possible to reduce the weight of the stairs, which makes the stairs easier to transport and improves construction efficiency.

Note that, as the lightweight core material 1, for example, a honeycomb core, a corrugated core, a roll core, etc. can be used.

[Effect of idea]

According to this invention, a plate-shaped lightweight core material is used instead of laminated plywood as the constituent material of the stair treads, making it possible to reduce the weight of the stairs and, as a result, making them easier to transport. It also improves workability.

It also has the effect of being able to be produced at a lower cost than conventional laminated plywood.

[Brief explanation of drawings]

FIG. 1 is a sectional view of one embodiment of this invention. 1...Lightweight core material, 2, 3...Reinforcement material, 4...Decorative plywood.

Claims (1)

[Scope of utility model registration request] A staircase comprising a plate-shaped lightweight core material, reinforcing materials placed on both sides of the lightweight core material, and decorative plywood covering at least the surface and one side of the plate body made of the lightweight core material and the reinforcing material. Treadboard.