JP2006161312A - Decorative plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative plate formed in such a structure that decorative plates can be easily connected to each other and are hard to be removed without rather requiring skill when they are laid down on installation surfaces such as a floor surface, wall surfaces, and a ceiling surface by connection and assembled and fixed. <P>SOLUTION: This decorative plate comprises a front surface recessed groove part 2 linearly on the surface of a decorative plate base material 1 at one end part along both end parts thereof, facing each other, formed of a resin molded body of roughly square in outline shape and a rear surface recessed groove part 3 linearly on the rear surface of the base material at the other end part. The front surface recessed groove part 2 in one sheet of decorative plate is combined with the rear surface recessed groove part 3 in the other one sheet of decorative plate to assemble a plurality of decorative plates in a surface shape by connecting them to each other. A pyramid shaped engagement projection 4 is formed at the outer tip of the front surface recessed groove part 2, a projected part 5 engaged with the engagement projection is formed on the inner surface of the rear surface recessed groove part 3, and the projected widths of the engagement projection 4 and the projected part 5 are 0.3 to 1.0 mm, respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a decorative board made of a wooden base material used for a surface material of a building interior material such as a flooring material, a wall material, and a ceiling material, and more particularly to a decorative board having a shape structure that is easy to construct. .

  Conventionally, as a decorative board for various uses, a natural veneer, a decorative paper or a decorative sheet that has been designed by printing on a paper or a synthetic resin sheet, and the like are bonded to a wooden substrate such as plywood or fiberboard. Many things are used.

  When using these decorative panels as surface materials for building interior materials such as floor materials, wall materials, and ceiling materials, floor surfaces (floor structure material surfaces), wall surfaces (wall structure material surfaces), and ceiling surfaces (ceiling structures) A plurality of decorative plates are arranged flat one by one so as to be in contact with the material surface), and the end portions of the decorative plates are sequentially fitted, connected and fixed, and spread.

  As shown in FIG. 3, in the conventional laying method of the decorative board, as shown in FIG. 3, the decorative board is provided with a concave portion at one end, and can be fitted into the concave portion at the other end opposite to the concave portion. Each having a convex portion, and the concave portion at the one end of the decorative plate and the convex portion at the other end of the decorative plate are sequentially abutted laterally from each other in the direction of the arrow. And the convex portion are fitted and fixed to fit and spread.

  Therefore, when connecting multiple decorative plates by fitting, the decorative plates are mutually abutted in the arrow direction from the lateral direction, and the convex portions are sequentially inserted into the concave portions and fitted. Since there is no locking mechanism at the mating part, the convex part and the concave part are generally made to fit closely together. There were many things that had to be done, and labor and time were required for the construction. In addition, it is necessary to nail and fix the fitting part to fix it so that it does not push up or loosen due to dimensional changes due to moisture absorption or temperature change after construction, and it is necessary to fix it by nailing the fitting part and generating noise in the surroundings due to the impact sound Then, it sometimes caused complaints.

  In addition, if the decorative plate or the structural material of the laying surface is damaged or dirty due to the passage of time after construction, it is necessary to remove and replace part of the decorative plate. Since the concavity and convexity of the connecting fitting part is arranged horizontally with respect to the laying structure surface such as the floor surface, it is difficult to remove, and the fitting part cannot be lifted up and removed, and the fitting part is cut with a saw or the like Without it, it was not possible to remove and replace only some of the decorative panels. Similarly, if the decorative plate to be replaced is not cut in the same manner, the decorative plate cannot be fitted and laid on the part from which the decorative plate is removed, and the nail is removed from the place where the decorative plate is fixed by nailing. Work was necessary.

  The present invention has been made to solve such problems, and the problem is that a decorative board (or decorative board) is connected to a construction surface such as a floor surface, a wall surface, or a ceiling surface. An object of the present invention is to provide a decorative board having a structure that is easy to connect and hard to come off without requiring a relatively high degree of skill when laying and installing and installing by construction.

  The present invention has been made in order to solve such a problem. That is, the invention according to claim 1 is provided along both opposing end portions of a decorative board substrate made of a resin molded body having a substantially rectangular outer shape. The surface of the base material at one end thereof is linearly provided with a groove on the back surface, and the back surface of the base material at the other end is provided with a linear groove on the back surface. A decorative plate that can be connected by combining a plurality of decorative plates in a planar shape by combining the back surface concave groove portion of the single decorative plate, and has a truncated pyramid shape at the outer tip of the front concave groove portion. And a protrusion that engages with the engagement protrusion on the inner surface of the back-side groove, and the protrusion width of the engagement protrusion and the protrusion is 0.3 to 1.0 mm. This is a decorative board.

  With the decorative board according to the first aspect of the present invention, the plurality of decorative boards can be easily fitted and locked together by the truncated pyramid-shaped engaging projections and projections. Further, by setting the protrusion width to 0.3 to 1.0 mm, it is possible to suppress the occurrence of push-up and eyelashes even if a dimensional change due to room temperature or humidity change occurs. Further, by having the width, it becomes possible to insert a spatula or the like into the gap due to the width of the protrusion during recycling to lift and remove the end of the decorative plate, or to insert the cutter edge to cut the connecting portion. Is possible.

  The cross-sectional structure of an embodiment of the decorative board of the present invention is shown in FIG. (A) shows the structure of one decorative board, and (b) shows a state in which a plurality of decorative boards are connected. FIG. 2 shows the structure of the connecting portion. The decorative sheet substrate 1, the front surface groove portion 2, the back surface groove portion 3, the engagement protrusion 4, and the protrusion portion 5 may be provided, and a decorative sheet 6 may be provided on the surface.

  The decorative board substrate 1 of the present invention is made of a resin molded body, specifically a thermoplastic resin, and particularly a polyolefin-based material such as polypropylene and polyethylene in order to obtain appropriate bending stress and resilience described later. Resins are preferred.

  Moreover, it is good also as a wood type resin molding by mixing a wood type filler. As the wood-based filler, wood powder having an average particle diameter of 1 to 200 μm is preferable. A mixing ratio of 10 to 500 parts by weight of wood flour is appropriate for 100 parts by weight of the thermoplastic resin. By adjusting the mixture quantitatively or positionally, the strength physical properties can be adjusted. For example, the bending stress can be increased by increasing the content of wood flour.

  In the case of further foaming, other additives such as a foaming agent can be appropriately mixed and used. By adopting a resin / foam (void) composite structure, bending stress can be reduced while maintaining appropriate strength properties.

  As a molding method of the resin molded body of the decorative board substrate 1 of the present invention, it can be molded by an injection molding method, a hot press molding method, a mold extrusion molding method, a cutting molding method, a mold casting method, or the like. Further, the whole or part of the decorative board base material may be foamed. As the expansion ratio, considering the appropriate cushioning property of the decorative board, about 1.1 to 10.0 times is appropriate.

  The surface concave groove portion 2 formed along one end portion of the decorative board substrate 1 of the present invention is configured by forming a truncated pyramid-shaped engagement protrusion 4 at the outer end thereof. Further, the back groove 3 formed along the other edge of the plate-like substrate 1 has a protrusion 5 that engages with the engagement protrusion 4 on the inner surface at the edge of the other end. It is comprised by forming.

  Then, by combining the front groove portion 2 of one decorative plate and the back groove portion 3 of the other decorative plate, two or more decorative plates are sequentially assembled into a plane and connected. To do.

  The decorative board of the present invention can be easily fitted at the time of construction, cannot be easily removed after daily use after construction, and can be easily removed at the time of replacement at the time of repair. A decorative board substrate made of a resin molded body has moderate bending stress and resilience. That is, it has a so-called hinge property that when a certain external force is applied during fitting and removal, the fitting portion opens and closes again when the external force is released.

  Therefore, the present invention is characterized in that the engaging projection and the protruding portion are provided, and the protruding width is set to 0.3 to 1.0 mm. This is a shape derived by the present inventors after intensive studies, and the interval between the decorative plates is taken by this shape and the protruding width. By being in this shape, it is in a state of being fitted with a gap between the decorative plates when it is constructed without being particularly conscious. By this interval, it is possible to suppress the occurrence of push-ups and eyes even if dimensional changes occur due to room temperature or humidity changes. In addition, by having the interval, it becomes possible to insert a spatula or the like into the interval at the time of recycling to lift and remove the edge of the decorative board, or to insert the cutter blade and cut the connecting portion Become.

  Moreover, you may provide the decorative sheet 6 in the surface of the decorative board base material 1 of this invention. Although not shown, the decorative sheet 6 includes a decorative sheet base material, a pattern layer, and a surface protective layer. When the same or similar resin as the decorative board base material 1 is used as the decorative sheet base material, the base material and the decorative material are used. Recycling is possible without the need for separation from the sheet. In particular, those that use polyolefin resin as the thermoplastic resin are inexpensive, have excellent processability, and are suitable for recycling depending on the application mode. Waste materials that are not present can be incinerated. The decorative sheet base material is usually colored, but may be transparent as long as the color of the decorative board base material is utilized, and is not particularly limited. On the other hand, since the surface protective layer is provided on the pattern layer, it is usually transparent, and various additives are added to a conventionally known resin for a surface protective layer having good physical properties in order to improve the physical properties of the surface. Further, embossed irregularities may be provided on the surface.

  The decorative sheet 6 is provided by bonding a decorative plate base material to the surface of the decorative plate substrate with an adhesive or the like. The decorative sheet 6 extends to the plate side of the concave portion of the front surface concave groove portion 2 and the front end side of the concave surface groove portion of the back surface. It is preferable to install and stick. As a result, the tension and flatness of the entire substrate can be adjusted, and the “hinge property” can be enhanced. In this way, when the decorative sheet 6 is extended to the inner surface of the gap and laminated, the protrusion width of the present invention is set in consideration of the thickness of the decorative sheet 6.

It is explanatory drawing which shows the structure of the cross section of one Example of the decorative board of this invention. It is explanatory drawing which shows the structure of the connection part of one Example of the decorative board of this invention. It is explanatory drawing which shows the structure of the cross section of an example of the conventional decorative board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Decorative plate base material 2 ... Front groove part 3 ... Back surface groove part 4 ... Engagement protrusion 5 ... Protrusion part 6 ... Cosmetic sheet

Claims (1)

  A decorative plate substrate made of a resin molded body having a substantially rectangular outer shape is provided with a surface groove in a linear form on the surface of the substrate at one end thereof along the opposite ends, and the substrate at the other end. The back surface is provided with a back surface groove portion in a linear form, and a plurality of decorative plates are assembled and connected in a plane by combining the front surface groove portion of one decorative plate and the back surface groove portion of another decorative plate. It is a decorative plate that enables construction, and has a frustoconical engagement protrusion at the outer front end of the front groove portion, and a protrusion portion that engages with the engagement protrusion on the inner surface of the back groove portion. And the decorative projection board and the protrusion width | variety of a protrusion part are 0.3-1.0 mm, The decorative board characterized by the above-mentioned.

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