JPH0634986Y2 - Core material for building materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a building material core member for forming a curved surface made of natural wood.

[Prior Art] As a conventional core member for building materials, there is, for example, a honeycomb body.
As is well known, this honeycomb body has a structure in which hexagonal columnar cylinders are connected innumerably, and the honeycomb body is sandwiched between two plywood to improve the strength and reduce the weight of the building material.

[Problems to be solved by the invention] However, in the conventional honeycomb body using the core member, since the hollow portion of the honeycomb body is continuous in the thickness direction, the air inside the honeycomb body is used as an intermediate body. Heat is easily transmitted. Therefore, there was a problem that the heat insulating property of the building material was poor.

In addition, since the constituents of the honeycomb body are intimately connected to each other, the honeycomb body can be used only for a flat building material without being subjected to processing such as bending the entire honeycomb body.

On the other hand, the ceiling material for forming the curved ceiling disclosed in Japanese Utility Model Laid-Open No. 62-173404 is a plate material having a certain thickness, in which a plurality of concave grooves are formed in parallel on both sides. Since the concave groove was not formed symmetrically on both sides and the groove width and pitch were different, there was a problem that when an external force was applied to bend the groove, it partially bent and a smooth curved surface could not be obtained. is there.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a large number of depths from one surface of a plate made of natural wood cut into a certain thickness to the middle of the thickness of the plate. A plurality of concave grooves are provided in parallel along the grain at a constant pitch, and a large number of grooves having the same width are provided at a position symmetrical to the concave groove from the other surface of the plate material and leaving a partition between the concave groove. The present invention provides a core member for a building material, wherein the concave grooves are engraved in parallel at the same pitch.

[Operation] Since a large number of concave grooves are engraved at symmetrical positions on both sides with the same width and the same pitch, the thickness of the partition is evenly and evenly arranged.
For this reason, it is possible to make a core member for a building material that can be uniformly curved and has a gently curved surface with a required curvature.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The building material core member A of the present invention has a large number of depths from one surface of a natural wood plate material 1 cut into a certain thickness as shown in FIG. 1 to the middle of the thickness of the plate material 1. The concave grooves 2a, 2a ... Of the plate are provided in parallel along the grain at a constant pitch, and
A plurality of recessed grooves 2b, 2b ... Having the same width and having the same position as the recessed grooves 2a, 2a ... And a partition portion 3 between the recessed grooves 2a, 2a. It is engraved in parallel with. In addition, such concave grooves 2a and 2b use a cutting device formed by arranging circular saw blades for woodwork in parallel at a constant interval on a rotary shaft, and rotate the circular saw blades to cut the plate material 1. It can be easily formed.

Next, an example of use of the building material core material A will be described with reference to FIGS. 2 to 4.

FIG. 2 shows the building material core member A between flat plywoods 4a and 4b.
It is a partition that has a required thickness.
The building material core member A is adhered to the inner surfaces of the plywoods 4a and 4b.

Further, FIG. 3 is an example of use in the case of forming a curved ceiling, curved wall, and the like. That is, by pressing the concave grooves 2b, 2b ... On one surface of the building material core member A in a direction of narrowing the distance between adjacent ones, the distance between the other concave grooves 2a, 2a. Curved in an arc. In this state, since it has a plane fan shape, the sheet 5 is stuck and fixed by adhesion on the surfaces of the recessed grooves 2b, 2b ... The degree of bending can be adjusted by the position where the partition 3 is provided. A plywood may be attached to the surface of the building material core member A curved in this way to a desired curved surface, or if it is attached to the corner of the building as it is, a decorative effect on the wall surface by the concave grooves 2a, 2a ...

By forming the groove along the grain like this,
Since the wood grain is not interrupted by the groove, there is an advantage that the strength of the plate material is not reduced.

[Effects of the Invention] As described above, the core member for building materials of the present invention uses a plate material made of natural wood and having a constant thickness, and concave grooves of equal width are symmetrically formed on both sides of the plate material and are parallel to each other along the grain. Therefore, the partition portions are formed evenly between the both concave grooves, and the whole can be curved uniformly. Therefore, there is an advantage that a gently curved surface having a desired curvature can be provided according to the place of use and a building material having strength can be provided.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view of a building material core member, FIG. 2 is a cross-sectional plan view showing a state of use, and FIG. 3 is a perspective view of a building material core member curved. 4 and 5 are cross-sectional plan views. 1 ... Plate material, 2a, 2b ... Recessed groove, 3 ... Partition, A ... Core member for building material.

Claims (1)

[Scope of utility model registration request] 1. A plurality of recessed grooves having a depth from one surface of a plate made of natural wood cut into a certain thickness to a middle of the thickness of the plate are provided in parallel along a grain at a constant pitch. With
A plurality of concave grooves of the same width are carved in parallel at the same pitch from the other surface of the plate material at positions symmetrical to the concave grooves and leaving a partition between the concave grooves. A core member for building materials.