JP3387903B2 - Building materials - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a building material. 2. Description of the Related Art Conventionally, as a method of manufacturing various building materials such as stairs of a stair, a rising frame, a mounting frame, a mounting column, a fitting and the like, a V-cut surface covering plate is attached to a core material surface. Integration is taking place. FIG. 7 shows a manufacturing process of a building material according to an example of the prior art, in which a core material 1 is preliminarily chamfered, and V-cuts are formed at two places at intervals according to the core material chamfered portion 2. The processed surface covering plate 3 is bent at the V-cut portions 4 and 4 and adhered on the core material 1. According to this manufacturing example, a chamfered portion 7 corresponding to the core material chamfered portion 2 is formed in the obtained building material. The surface covering plate 3 is formed by attaching a decorative material 6 on a substrate 5, and
Is provided so as to leave at least the decorative material 6 from the back surface side. FIG. 8 shows a process of manufacturing a building material according to another example of the prior art. In this manufacturing example, the core material 1 is not chamfered, and a W-shaped cut 8 is made on the back surface side of the substrate 5 of the surface coating plate 3, and the surface coating plate 3 is bent at the cut 8, whereby the back surface is formed. The side is formed at a right angle so as to match the corner of the core material, and a chamfered portion 7 'is formed on the front side. As described above, a building material having a chamfered portion can be obtained by any of the manufacturing examples shown in FIGS. 7 and 8, but in the case of FIG. It is necessary to perform processing, and not only the process becomes complicated, but also the chamfered portion 2 of the core material and the back surface side portion of the surface coating material 3 (the back surface portion sandwiched between the V cut portions 4, 4) in contact therewith. If the dimensions deviate from each other, the surface coating material cannot be stuck to the core material well, so that high dimensional accuracy is required for these, and a skilled technique is required. In the case of FIG. 8, it is not necessary to perform chamfering on the core material 1, but it is difficult to provide a large chamfered portion 7 as shown in FIG. 5, and it is not possible to satisfy the design requirement as a building material. In some cases, the thickness of the surface coating plate 3 must be increased in order to increase the size of the chamfered portion, which inevitably increases the cost. Further, in this building material, the portion of the surface covering material 3 forming the chamfered portion 7 'is formed in a triangular cross section. When an impact or load is applied to the chamfered portion 7', this becomes a vertex of the triangle. And the corners of the substrate of the surface covering material 3 and the corners of the core material 1 collide and break,
As a result of the formation of a gap between them, a crack may be generated on the surface of the chamfered portion 7 '. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art. More specifically, the present invention is easy to manufacture and can use a relatively thin surface coating plate. It is an object of the present invention to provide a building material having a novel configuration that can form a wide chamfered portion and does not cause damage or the like even when subjected to an impact or a load. In order to achieve this object, the present invention according to claim 1 is to provide a surface covering plate having a decorative material adhered to the surface of a substrate so that at least the decorative material remains from the back side of the substrate. Fold it at the V-shaped cutout,
In the building material obtained by sticking and integrating on the surface of the core material, a core material receiving portion is provided on the back surface side of the substrate at a location to be a chamfered portion of the surface covering plate, and a corner of the core material is provided on the back surface of the core material receiving portion. The core material is formed in such a manner that the surface covering plate is bent at the substantially V-shaped cut-out portions formed on both sides of the core material receiving portion, and the corners of the core material are fitted into the insertion portions. And a surface covering material. Embodiments of the present invention will be described below with reference to the accompanying drawings. The building material of the present invention
It can be applied irrespective of its use, as long as it is obtained by sticking and integrating a cut surface coating material on a core material and forming a chamfer on its surface. Specifically, it can be applied to various building materials such as treads of stairs, rising stairs, attached stairs, attached pillars, fittings, doors of storages such as furniture, and other wide areas. The surface covering plate 10 is composed of a decorative material 11 and a substrate 12, which are obtained by laminating and integrating them with an adhesive. As the decorative material 11, veneer, decorative synthetic resin sheet, decorative paper and other various decorative sheet materials can be used. A backing material can be attached to the back surface of the decorative material 11. Further, a surface protection layer can be formed on the surface of the decorative material 11. A plywood, a wood fiber board, a particle board or other various wood boards, a synthetic resin board, or the like can be arbitrarily selected and used as the substrate 12. V-cuts are formed on the surface covering plate 10 from the back side of the substrate 12 over the entire width to form cutouts 13, 13 at predetermined intervals, and the core material receiving portion 1 is located between them.
4 are formed. Cutting parts 13 and 13 and core material receiving part 14
In consideration of the relationship between the shape (particularly the angle of the corner portion 16) of the core material 15 covered by the surface covering plate 10 and the size (width) of the chamfered portion 17 to be formed in the building material to be obtained. , Determine its angle and shape. For example, in the embodiment shown in FIG.
In order to cover the core material corner 16 which is ゜, the core material receiving portion 14
Are formed as vertical surfaces, and the cut portions 13 and 13 are formed by obliquely V-cutting the vertical surfaces at an angle of 45 °. In the center of the back surface of the core receiving portion 14, a fitting portion 18 for fitting the core material corner 16 is formed. In the embodiment shown in FIG. 1, the fitting portion 18 is also formed as a concave groove having an angle of 90 ° in order to fit the core material corner 16 of 90 °. When the thus obtained surface covering plate 10 is bent at the cutouts 13 and 13 and the inner surfaces of the cutouts 13 and 13 are adhered to each other with an adhesive, these cutouts are both at an angle of 45 ° and V. Since it is cut, core corner 1
It will be folded at an angle of 90 ° equal to 6.
Then, the bent surface covering plate 10 is inserted into the fitting portion 18.
By attaching and integrating the core material corner 16 with the surface of the core material 15 via an adhesive so that the corner material 16 is inserted into the core material, the building material 20 having the chamfered portion 17 is obtained. The above-described configuration for forming the chamfered portion 17 may be employed for each of the corner portions 16 and 16 of the core material 15 as shown in FIG. 2, or as shown in FIG. Only the corner 16 is used, and the other corners 16 '
With respect to the above, the chamfered portion 17 may not be formed only by performing the V-cut according to the related art. As the core material 15, a plywood, a laminated veneer, a laminated wood, a wood fiber board, a particle board and other various wood boards, a synthetic resin board, an inorganic board, a metal board and the like are optionally used. The shape is also arbitrary, and may be plate-like, rod-like, column-like, or the like. As described above, the cut portions 13, 13 and the core material receiving portion 14 are determined by the relationship between the angle of the core material corner portion 16 covered by the surface covering plate 10 and the width of the chamfered portion 17. For example, when the core material corner portion 16 has an angle of 120 °, the angle of the fitting portion 18 is also set to 120 °, and the cutout portions 13 are formed by V-cut each at an angle of 30 °. (FIG. 4). The depth of the fitting portion 18 formed in the core material receiving portion 14 is also relatively shallow in the embodiment of FIG. 1, but may be formed as a deeper groove. 5), the maximum depth of the groove is a depth reaching the decorative material 11 (FIG. 6). As is apparent from FIG. 6, when the angle of the core material corner 16 is 90 degrees, which is a general angle, according to the present invention, the thickness of the substrate 12 of the surface covering plate 10 is about 2.times.
The chamfered portion 17 having a width of eight times (2 × √2) can be formed. According to the present invention as described above,
Even if a relatively thin surface covering plate is used, by adjusting the depth of the fitting portion formed in the core material receiving portion,
A chamfer having a wide range of widths from narrow to wide can be provided, and design requirements according to the application can be satisfied. Since the corners of the core material are fitted into the fitting portions formed in the core material receiving portion, positioning at the time of covering the surface of the core material with the bent surface covering plate is easy, and the production at the factory is easy. And on-site construction becomes easier. Further, in the case of a step board or a rising staircase of a stair, a foot is likely to hit a chamfered portion and an impact is likely to be applied. However, according to the building material of the present invention, an impact is received by the entire core material receiving portion and the corner of the core material is received. Since it is possible to escape to the periphery of the part, the impact does not concentrate on the corner of the core material, so that the damage is prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a manufacturing process of a building material according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of a building material obtained according to FIG. FIG. 3 is a view showing another example of a building material obtained according to FIG. 1; FIG. 4 is a view showing a building material according to another embodiment of the present invention. FIG. 5 is a view showing a building material according to still another embodiment of the present invention. FIG. 6 is a view showing a building material according to still another embodiment of the present invention. FIG. 7 is a view showing a manufacturing process of a building material according to an example of the prior art. FIG. 8 is a view showing a manufacturing process of a building material according to another example of the prior art. [Description of Signs] 10 Surface covering plate 11 Decorative material 12 Base material 13 Cutting part 14 Core material receiving part 15 Core material 16 Core material corner 17 Chamfering part 18 Insertion part 20 Building material

Claims (1)

(57) [Claims 1] A surface covering plate having a decorative material adhered to the surface of a substrate is cut into a substantially V shape so that at least the decorative material remains from the back side of the substrate. Bend at the resection,
In the building material obtained by sticking and integrating on the surface of the core material, a core material receiving portion is provided on the back surface side of the substrate at a location to be a chamfered portion of the surface covering plate, and a corner of the core material is provided on the back surface of the core material receiving portion. The core material is formed in such a manner that the surface covering plate is bent at the substantially V-shaped cut-out portions formed on both sides of the core material receiving portion, and the corners of the core material are fitted into the insertion portions. And a surface coating material.