JP6848322B2 - How to install the veneer - Google Patents

Description

The present invention relates to a method of constructing a decorative board.

Conventionally, as an interior material for a wall or ceiling of a building, a construction method of attaching a decorative board to the surface of the base material so as to cover the surface of the base material has been implemented (see, for example, Patent Document 1). By constructing a decorative board on the base material in this way, the design and fire resistance of the interior of the building are ensured.

Japanese Unexamined Patent Publication No. 4-312671

Here, fixtures such as fluorescent lamps, switchboards, and switch boxes may be attached to the ceilings and walls of buildings. At this time, an opening or a notch is formed in the decorative board, and the instrument is attached at the position of the opening or the notch. In such a case, when a load that causes deformation is applied to the decorative board, cracks may occur in the decorative board from the corners of the openings and notches.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a method for constructing a decorative board, which can suppress the generation of cracks from the corners of the decorative board. ..

The method of constructing a decorative board according to the present invention is a method of constructing a decorative board on a base material, in which a sticking step of attaching the decorative board to the base material, a first cutting line, and the first cutting line intersect. The corner forming step of forming the corners on the decorative board by cutting the decorative board at the second cutting line, and the reinforcing member for reinforcing the corners of the decorative board are arranged on the back surface side of the decorative board. , A reinforcing member arranging process, and the like.

In the method for constructing a decorative board according to the present invention, the decorative board is cut at the first cutting line and the second cutting line where the first cutting line intersects in the corner forming step. Corners are formed in. In the reinforcing member arranging step, the reinforcing member is arranged on the back surface side of the decorative plate with respect to such a corner portion. The reinforcing member reinforces the corners of the decorative board. Therefore, even when a large load that accompanies the deformation of the decorative board acts on the decorative board, the reinforcing member on the back surface side of the decorative board reinforces the corners, so that the decorative board is deformed at the corners. Can be suppressed. As described above, it is possible to suppress the generation of cracks from the corners of the decorative board.

In addition, each step is executed in the order of the pasting step, the corner forming step, and the reinforcing member arranging step. By inserting, the reinforcing member may be arranged on the back surface side of the decorative plate. For example, when the corner forming step is executed before the sticking step, the mounting position of the instrument must be accurately determined in advance. However, if the sticking step is executed first and the corner forming step is executed, the decorative board can be cut according to the mounting position of the instrument. At that time, when the reinforcing member is inserted from the plane direction, the corner portion can be reinforced even after the decorative plate is cut according to the mounting position of the instrument. As a result, the mounting position of the instrument can be determined after the decorative board is attached to the base material, so that the degree of freedom in processing the decorative board can be ensured.

Further, in the reinforcing member arranging step, the reinforcing member is joined to the decorative board via an adhesive, and the adhesive may have a cohesive force of 1 to ^{200 N / mm 2.} As a result, the reinforcing member can be reinforced more reliably with the decorative board.

According to the present invention, it is possible to suppress the generation of cracks from the corners of the decorative board.

FIG. 1 is a perspective view showing a structure constructed by the construction method according to the embodiment of the present invention. FIG. 2A is an enlarged view of the structure shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line IIb-IIb of FIG. 2A. FIG. 3 is a perspective view showing the shape of the reinforcing member according to the modified example. FIG. 4A is a diagram for explaining a method of constructing a decorative board according to an embodiment of the present invention, and FIG. 4B is a diagram for explaining a method of constructing a decorative board according to a modified example. Is. 5 (a) and 5 (b) are schematic views showing the configuration of the local load test apparatus used in the test 1. FIG. 6A is a table showing the results of Test 1, and FIG. 6B is a table showing the results of Test 2. FIG. 7A is a diagram showing a test piece according to Comparative Example 2, and FIG. 7B is a diagram showing a test piece according to Example 2.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or equivalent elements will be designated by the same reference numerals, and duplicate description will be omitted.

FIG. 1 is a perspective view showing a structure constructed by the construction method according to the present embodiment. FIG. 2A is an enlarged view of the structure shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line IIb-IIb of FIG. 2A. However, in FIG. 2, the instrument D shown in FIG. 1 is omitted. As shown in FIG. 1, the structure 100 is configured by providing a decorative plate 2 so as to cover the surface of the base material 1. Further, an appliance D such as a fluorescent lamp, a switchboard, and a switch box is attached to the structure 100. Such an instrument D is fitted into an opening W (or a notch portion) of the decorative plate 2 (and the base material 1) as shown in FIG. 2A. The construction method according to the present embodiment relates to a construction method when constructing the vicinity of the corner 8 of the opening W of the decorative board 2. Although the wall portion is illustrated as the structure 100 in FIG. 1, the structure 100 may be a ceiling portion. As shown in FIG. 2, the structure 100 includes a base material 1, a decorative plate 2 that covers the base material 1, and a reinforcing member 3 that is arranged between the base material 1 and the decorative plate 2.

The decorative board 2 is a board member that covers the surface of the base material 1 as an interior material of a building in order to secure design and fire resistance. The decorative board 2 is a plate-shaped member formed by painting the surface of a base material of a predetermined material. As the material of the base material, an inorganic base material such as a calcium silicate board, a cement board, or a magnesium oxide board can be used. Such a material is a member used for the interior of a building as a relatively inexpensive material while having good noncombustible performance and surface performance. The thickness of the decorative board 2 may be set to 3 to 12 mm. The base material 1 may be composed of gypsum board, concrete, mortar, tile, and plywood. A double-sided tape, an elastic adhesive, or the like may be arranged between the base material 1 and the decorative plate 2, whereby the decorative plate 2 is fixed to the base material 1. A gap SP corresponding to the thickness of the double-sided tape or the elastic adhesive is formed between the decorative board 2 and the base material 1 (particularly, see FIG. 2B).

The decorative board 2 has a corner portion 8 in which an edge portion 6 cut along the first cutting line L1 and an edge portion 7 cut along the second cutting line L2 intersect. In the present embodiment, the angle of the corner portion 8 is set to 90 °, but the angle is not particularly limited and may be smaller or larger than 90 °. The corner portion 8 may be formed with an R (rounding) having a predetermined diameter. As a result, cracks in the decorative plate 2 starting from the corner portion 8 can be suppressed. However, the corner portion 8 does not have to have an R formed, and may have a pin angle configuration. The base material 1 may also have an opening W similar to that of the decorative plate 2 and a similar corner portion.

The reinforcing member 3 is a member arranged on the back surface 2a side of the decorative plate 2. That is, the reinforcing member 3 is arranged in the gap SP between the decorative plate 2 and the base material 1. The reinforcing member 3 reinforces the corner portion 8 of the decorative plate 2. Here, "reinforcing the corner portion 8" means not only a configuration in which the reinforcing member 3 is arranged at the position of the corner portion 8 to directly support and reinforce the corner portion 8, but also a configuration in which the reinforcing member 3 is separated from the corner portion 8. It is assumed that the structure is arranged at a position where the load related to the corner portion 8 can be transmitted to the reinforcing member 3 to the extent that the occurrence of cracks at the corner portion 8 can be prevented even at the position where the corner portion 8 is formed. That is, the installation position of the reinforcing member 3 is not particularly limited as long as it is a position where the corner portion 8 of the decorative plate 2 can be reinforced. For example, as shown in FIG. 2 (a), the reinforcing member 3 may be provided at a position in contact with the corner portion 8 in a plan view, but as shown in FIG. 7 (b), the reinforcing member 3 is separated from the corner portion 8. It may be arranged at the desired position. However, when the reinforcing member 3 is arranged apart from the corner portion 8, it is preferable that the reinforcing member 3 is arranged at a position within 50 mm from the corner portion 8. In a plan view, a part of the reinforcing member 3 may protrude from the edges 6 and 7 and the corners (that is, may protrude into the opening W), but the protruding portion is installed in the opening W. It is limited to a size that does not interfere with.

The material of the reinforcing member 3 is not particularly limited, but may be a metal such as an aluminum plate, a stainless steel plate or a galvanized steel plate, or a resin such as a melamine plate or a phenol plate. Further, the thickness of the reinforcing member 3 may be about the same as the size of the gap SP between the decorative plate 2 and the base material 1, or may be smaller than the size of the gap SP, for example, 0.2 mm to 1. It may be set to 2 mm. The optimum value of the thickness of the reinforcing member 3 is the gap SP of “−0.2 mm”. For example, since the size of the gap SP is usually 1.0 to 1.2 mm, the optimum thickness of the reinforcing member 3 is 0.8 to 1.0 mm. The shape of the reinforcing member 3 in a plan view is not particularly limited. For example, the reinforcing member 3 shown in FIG. 2A has a rectangular shape. Here, a reference line SL that passes through the corner portion 8 and forms 135 ° with the edge portions 6 and 7 is set. In this case, the shape of the reinforcing member 3 in a plan view is line-symmetric with respect to the reference line SL. Further, the rectangular short side direction of the reinforcing member 3 may coincide with the extending direction of the reference line SL. However, the rectangular longitudinal direction of the reinforcing member 3 may coincide with the extending direction of the reference line SL. Alternatively, the reinforcing member 3 may have a square shape, a square shape other than a quadrangular shape, a circular shape or an elliptical shape, and a part thereof is cut out in accordance with the corner portion 8. Such a shape (for example, see FIG. 3 described later) may be used, and the shape is not particularly limited. Further, the shape of the reinforcing member 3 does not have to be line-symmetrical with respect to the reference line SL.

Further, the reinforcing member 3 may have a positioning portion for positioning with the decorative plate 2 and preventing the reinforcing member 3 from falling off when arranged in the gap SP. Specifically, the reinforcing member 3 shown in FIGS. 3A to 3F has a notch 20 formed in a shape corresponding to the edges 6 and 7 and the corner 8 of the decorative plate 2. The notch 20 is formed by edges 21 and 22 that intersect (orthogonally) each other. Of these, the reinforcing member 3 shown in FIG. 3A has positioning portions 31 and 32 at the edges 21 and 22 of the cutout portion 20, respectively. The positioning portions 31 and 32 are configured by being folded back so as to rise from the edge portions 21 and 22 in the thickness direction. The positioning portions 31 and 32 are brought into contact with the edge portions 6 and 7 of the decorative plate 2 to perform positioning and prevention of falling off. The reinforcing member 3 shown in FIG. 3C has a positioning portion 35 only on the edge portion 21 side. The reinforcing member 3 shown in FIG. 3 (c) has a flat plate portion that is vertically longer than that in FIG. 3 (b). The reinforcing member 3 shown in FIG. 3D has positioning portions 33 and 34 further provided with a folded portion from the upper end. As a result, it is possible to more reliably prevent the decorative plate 2 from falling off. The reinforcing member 3 shown in FIG. 3 (e) has a flat plate portion about twice as large as that of FIG. 3 (b). In the reinforcing member 3 shown in FIG. 3 (f), the positioning portion 34 in FIG. 3 (d) is formed only on one edge portion 22.

The reinforcing member 3 is joined to the decorative plate 2 via an adhesive. The adhesive used is not particularly limited, but for example, a two-component epoxy adhesive, an instant adhesive, a rubber glue adhesive, or the like may be used. The adhesive preferably has a cohesive force of 1 to 200 N / mm ^2. Further, the position where the adhesive is applied to the reinforcing member 3 is not particularly limited. For example, the adhesive may be applied over the entire surface of the reinforcing member 3, or the adhesive may be applied only to a part of the reinforcing member 3. For example, the adhesive may be applied only to the vicinity of any edge of the reinforcing member 3.

Next, the construction method of the decorative board 2 according to the present embodiment will be described. The construction method of the decorative board 2 according to the present embodiment includes a sticking step, a corner forming step, and a reinforcing member arranging step. In addition, each step is executed in the order of the pasting step, the corner forming step, and the reinforcing member arranging step.

The sticking step is a step of sticking the decorative board 2 to the base material 1. In this step, the decorative board 2 before cutting is attached to the surface of the base material 1. A tape, an adhesive or the like is placed on the back surface 2a of the decorative board 2 and attached to the base material 1. At this time, the tape, the adhesive, or the like should not be placed at the place where the opening W is to be provided.

The corner forming step is a step of forming the corner 8 on the decorative plate 2 by cutting the decorative plate 2 at the first cutting line L1 and the second cutting line L2. In this step, first, a through hole is formed in the decorative plate 2 before cutting at a position where the corner portion 8 is to be formed by a drill or the like. At this time, when R is attached to the corner portion 8, the size of R can be adjusted by adjusting the diameter of the drill. The first cutting line L1 and the second cutting line L2 intersect at a through hole at the corner 8. Next, using a cutting tool, the decorative plate 2 is cut along the first cutting line L1 and the decorative plate 2 is cut along the second cutting line L2. As a result, the opening W is formed, and the edges 6, 7 and the corners 8 are formed.

The reinforcing member arranging step is a step of arranging the reinforcing member 3 in the gap SP between the base material 1 and the decorative plate 2. As shown in FIG. 4A, in the reinforcing member arranging step, the reinforcing member 3 is inserted into the gap SP between the base material 1 and the decorative plate 2 from the plane direction to insert the reinforcing member 3 into the gap SP. Place it in the SP.

In the reinforcing member arranging step, the reinforcing member 3 may be joined to the decorative plate 2 via an adhesive. The method of joining the reinforcing member 3 and the decorative plate 2 with an adhesive is not particularly limited, and examples thereof include the following methods. For example, a hot melt adhesive is applied to the reinforcing member 3 before insertion, inserted into the gap SP, the hot melt adhesive is activated at a high frequency, and the reinforcing member 3 is fixed to the back surface of the decorative plate 2. Good. Alternatively, double-sided tape for temporary fixing may be attached to both ends of the reinforcing member 3, and rubber glue, an epoxy adhesive or the like may be applied to the central region of the reinforcing member 3. After that, the reinforcing member 3 is inserted into the gap SP, and the reinforcing member 3 is temporarily fixed to the decorative plate 2 with double-sided tape. After that, as time passes, the adhesive solidifies and the reinforcing member 3 is fixed to the decorative plate 2. Alternatively, a groove for flowing an adhesive is formed in advance on the joint surface of the reinforcing member 3, the reinforcing member 3 is inserted into the gap SP, and then an adhesive such as epoxy is injected into the groove from the outside of the gap SP. It's okay. As a result, the adhesive circulates in the groove and spreads over the entire joint surface of the reinforcing member 3.

Next, the action / effect of the construction method of the decorative board 2 according to the present embodiment will be described.

For example, when the structure 100 is constructed by the conventional construction method, cracks may occur in the decorative plate 2 starting from the corner 8 when a large load accompanied by deformation of the decorative plate 2 is applied. .. For example, in a building such as a clean room, when the air pressure in the room is adjusted, the decorative board 2 may be deformed together with the base material 1. In addition, the decorative plate 2 may be deformed when vibration of an external factor such as an earthquake is applied. Further, when the instrument D is attached to the decorative plate 2, the decorative plate 2 may be deformed by rubbing the screws.

In the method of constructing the decorative board 2 according to the present embodiment, the decorative board 2 is cut at the first cutting line L1 and the second cutting line L2 where the first cutting line L1 intersects in the corner forming step. By doing so, the corner portion 8 is formed on the decorative plate 2. In the reinforcing member arranging step with respect to such a corner portion 8, the reinforcing member 3 is arranged on the back surface 2a side of the decorative plate 2. The reinforcing member 3 reinforces the corner portion 8 of the decorative plate 2. Therefore, even when a large load that accompanies the deformation of the decorative plate 2 acts on the decorative plate 2, the reinforcing member 3 between the base material 1 and the decorative plate 2 reinforces the corner portion 8. , Deformation of the decorative plate 2 at the corner portion 8 can be suppressed. As described above, it is possible to prevent cracks from being generated from the corners 8 of the decorative plate 2.

Further, each step is executed in the order of the sticking step, the corner forming step, and the reinforcing member arranging step. In the reinforcing member arranging step, the reinforcing member 3 is provided with respect to the gap SP between the base material 1 and the decorative plate 2. Is inserted from the plane direction to arrange the reinforcing member 3 on the back surface 2a side of the decorative plate 2. For example, when the corner forming step is executed before the pasting step is executed, the mounting position of the instrument D must be accurately determined in advance. However, if the sticking step is executed first and the corner forming step is executed, the decorative plate 2 can be cut according to the mounting position of the instrument D. At that time, the corner portion 8 can be reinforced by inserting the reinforcing member 3 from the plane direction into the gap SP between the base material 1 and the decorative plate 2. As a result, the mounting position of the instrument D can be determined after the decorative plate 2 is attached to the base material, so that the degree of freedom in processing the decorative plate 2 can be ensured.

Further, in the reinforcing member arranging step, the reinforcing member 3 is joined to the decorative board via an adhesive, and the adhesive has a cohesive force of 1 to ^{200 N / mm 2.} For the cohesive force, after solidifying the adhesive between two iron attachments with a test surface of 20 mm square, a peeling test was conducted at a speed of 2 mm / min in the 180 degree direction, and the adhesive adhered to both iron attachments. It is defined as the adhesive strength (N / mm ^{2) when it is broken in this state.} As a result, the reinforcing member 3 can be more reliably reinforced with the decorative plate 2.

The present invention is not limited to the above-described embodiment.

The order of each step is not limited to the above-described embodiment. For example, each step may be executed in the order of the corner forming step, the reinforcing member arranging step, and the sticking step. In this case, as shown in FIG. 4B, in the reinforcing member arranging step, the reinforcing member 3 is attached to the back surface 2a of the cut decorative plate 2. In the sticking step, the decorative board 2 with the reinforcing member 3 attached is stuck to the base material 1. This saves the trouble of inserting the reinforcing member 3 into the gap SP later.

Further, the above-described embodiment is only an example, and the shape, position, quantity, etc. of the reinforcing member are not particularly limited, and can be appropriately changed without departing from the gist of the present invention.

[Example]
Next, examples of the present invention will be described. However, the present invention is not limited to the following examples.

(Test 1)
A local load test was performed using the local load test device shown in FIG. In this test apparatus, a metal piece 51 and a decorative plate test piece 52 are installed on a pedestal 50, and a jig 53 is brought into contact with each corner of the test piece 52 to apply a load. The corner portion 52a of the test piece 52 was placed on the aluminum metal piece 51 having a thickness of 1.6 mm. The load of the jig 53 was set to 1.5 kg per jig 53. As the test piece 52 of the decorative board, a piece cut into a shape that draws a substantially L shape was prepared. The test piece 52 is obtained by forming a notch of 150 mm × 150 mm on a coated calcium silicate plate having a specific gravity of 1.0 of 300 mm × 300 mm. Further, as the corner portion 52a of the test piece 52, one in which R is not substantially formed (pin angle) was used. As Example 1, two metal plates having a thickness of 1 mm and a thickness of 30 mm × 60 mm were prepared as reinforcing members 3 in the vicinity of the corner portion 52a with an epoxy adhesive. As Comparative Example 1, two pieces without a metal plate were prepared. A load was applied under the above conditions, and the crack condition after 20 minutes was observed. The test results are shown in FIG. 6 (a). As shown in the test results, no cracks were generated in Example 1. On the other hand, in the comparative example, cracks having a length of 3 mm and 4 mm occurred. From this, it was understood that the use of the reinforcing member 3 makes it difficult for cracks to occur.

(Test 2)
As Comparative Example 2, a test piece 61 as shown in FIG. 7A was prepared. The test piece 61 has a V-shaped notch having a depth of 20 mm formed at the center of the long side of a 70 mm × 200 mm coated calcium silicate plate. As Example 2, a test piece 61 prepared by fixing a steel plate having a thickness of 0.8 mm and having a thickness of 30 mm × 50 mm as a reinforcing member 3 with an epoxy adhesive. The reinforcing member 3 is arranged so that the long side of the reinforcing member 3 extends at a position 10 mm away from the top of the V-shaped notch. Hold both ends of the test piece 61 in the longitudinal direction from below with a jig, push the center position of the surface with a jig from top to bottom, and apply the load and deflection when cracks occur from the corner 61a. It was measured. The test was carried out by preparing five test pieces of Example 2 and Comparative Example 2. The test results are shown in FIG. 6 (b). As can be understood from the results, the load at the time of crack occurrence was larger in Example 2 than in Comparative Example 2. From this, it is understood that by using the reinforcing member 3, the load that the decorative plate 2 can withstand before cracks occur can be increased.

1 ... Base material, 2 ... Decorative board, 3 ... Reinforcing member, 8 ... Corner, L1 ... First cutting line, L2 ... Second cutting line.

Claims (3)

It is a method of constructing a decorative board on the base material.
The sticking step of sticking the decorative board to the base material and
A corner forming step of forming a corner portion on the decorative plate by cutting the decorative plate at a first cutting line and a second cutting line where the first cutting line intersects.
A method for constructing a decorative board, comprising a reinforcing member arranging step of arranging a reinforcing member which is a plate material for reinforcing only one corner of the decorative board on the back surface side of the decorative board. Each step is executed in the order of the pasting step, the corner forming step, and the reinforcing member arranging step.
In the reinforcing member arranging step, the reinforcing member is inserted from the plane direction into the gap between the base material and the decorative board by the thickness of the base material and the joining material that joins the decorative boards to each other. The method for constructing a decorative board according to claim 1, wherein the reinforcing member is arranged on the back surface side of the decorative board. In the reinforcing member arranging step, the reinforcing member is joined to the decorative board via an adhesive.
The method for applying a decorative board according to claim 1 or 2, wherein the adhesive has a cohesive force of 1 to 200 N / mm ^2.

Images