JP7331192B2 - Decorative panel, structure of decorative panel, and mounting structure of decorative panel - Google Patents

Description

The present invention relates to a decorative panel, a decorative panel structure, and a decorative panel mounting structure.

Conventionally, thin decorative materials such as thermosetting resin veneers are adhered to horizontal surfaces such as desks, tables and counters, and vertical surfaces such as wall surfaces and door panels using adhesives or adhesive tapes. Widely used as interior and exterior materials.

Utility Model Registration No. 3117950 JP 2012-228331 A

The thin decorative material is very thin because it has a thickness of less than 1 cm, and is characterized by excellent hardness and strength. There was a high possibility that it would crack and break when a screw or the like was driven into it. Moreover, since the heads of nails and screws are exposed on the surface of the thin decorative material, there is a problem that the appearance is very poor. Therefore, although construction methods using adhesives and adhesive tapes are widely used, when adhesives are used, they cannot be applied to places where there is no curing period for the adhesive to harden. However, there is a problem that workability is very poor. Moreover, when an adhesive tape is used, its strength is insufficient, so that it is difficult to bond it to the wall surface or the ceiling surface.

The present invention is an invention that has been studied in view of such circumstances, and has a first opening, a bent piece at the tip of the first opening, and the second opening at the bottom of the first opening. A fastening frame having a convex portion in the direction of one opening and a second opening in the direction opposite to the first opening is provided in the convex portion. The above problem can be solved by fastening with a fastener that can be drilled.

By using a diameter-expandable fastener and an adhesive together, it becomes possible to fasten the decorative material to the structural frame, and it can be attached more firmly and easily than an adhesive or an adhesive tape. In addition, since fixing is possible by using a diameter-expandable fastener, workability is good, and sufficient fixing strength can be exhibited until the adhesive is cured. Furthermore, since no nails or screws are used, the possibility of cracks or cracks occurring in the thin decorative material can be remarkably suppressed. be. Moreover, if a noncombustible veneer is used as the decorative material, the structure will be excellent in fire resistance. In addition, by using decorative paper provided for decorative boards, various finishes and designs can be obtained. Furthermore, the decorative panel of the present invention can be applied to interior and exterior wall surfaces and ceiling surfaces by appropriately selecting fasteners, decorative materials, and frames. Hereinafter, the present invention will be described in detail based on the drawings.

Top view of the frame. FIG. 2 is a cross-sectional view taken along the line AA′ in FIG. 1; A perspective view of the frame. A see-through front view of a rivet. Bottom view of the rivet. Top view of the rivet. Front view of the pin. The perspective front view which shows the state before use of a fastener. The perspective front view which shows the state at the time of use of a fastener. The top view of a makeup panel. FIG. 10 is an enlarged cross-sectional view taken along the line CC' of the BB' portion in FIG. FIG. 12 is an enlarged cross-sectional view of a main part of FIG. 11; FIG. 4 is an enlarged perspective view of a main part showing a method of manufacturing a decorative panel; Sectional drawing which shows the fastening state of a decorative panel. Fig. 10 is a front view of another fastener pin; Fig. 4 is a perspective front view of a rivet of another fastener; The see-through|perspective front view which shows the state before use of another fastener. The perspective front view which shows the state at the time of use of another fastener. Fig. 10 is a front view of another fastener pin; The front view which shows the state before a pull-out strength test. The front view which shows a pull-out strength test.

A detailed description will be given below with reference to the drawings. FIG. 1 is a plan view of a frame 10 according to the present invention, continuous in the vertical direction. The through-hole may be provided at the actual work site or may be provided in advance. FIG. 2 is a cross-sectional view taken along line AA' in FIG. FIG. 3 is a perspective view.

As shown in the cross-sectional view of FIG. 2, the frame 10 has a first opening 11, and at the tip of the first opening, a bent piece 12 extending outward from the opening 11, A bottom portion 14 of the first opening portion 11 is provided with a convex portion 15 having a width narrower than that of the first opening portion 11 . The bent piece 12 serves as a mounting surface on which the steel material is placed.

The convex portion 15 is convex toward the opening direction of the first opening portion and has a second opening portion 17 in the opposite direction. The second opening 17 serves as a space for securing and storing the length of the fastener to be inserted. Through-holes are provided in places of the convex portion 15, and fasteners are inserted therethrough.

4 is a see-through front view of the rivet 40, FIG. 5 is a bottom view, and FIG. 6 is a plan view. The rivet 40 has a head portion 40a, a hollow portion 40b with a narrow lower end, a slit 40d, and a fixing portion 40c formed on the outer peripheral surface of the lower portion. Although not shown, the fixed portion may have a knurled shape or the like. The diameter of the lower portion of the rivet 40 can be expanded to increase the area of contact with the peripheral surface 25 of the bottomed hole 24 .

Although four slits 40d are provided, two or six slits may be provided, and the number of slits is not particularly limited. FIG. 7 is a front view of the pin 30, the bottom of which is provided with a conical portion 30c.

FIG. 8 is a see-through front view of the fastener 50 before use. As shown in FIG. 8, the pin 30 is inserted through the hollow portion 40b of the rivet 40. As shown in FIG. Materials for pins and rivets include aluminum, brass, iron, and steel. Aluminum is easy to process, for example, forming irregularities. Brass, iron, steel, etc. require high melting temperatures, excellent heat resistance, and non-combustibility. It is suitable for buildings where The material is appropriately selected and used in consideration of the application location, usage conditions, and the like.

FIG. 9 is a see-through front view of the fastener 50 in use. As shown in FIG. 9, the pin 30 is inserted through the hollow portion 40b of the rivet 40 and press-fitted. When press-fitted, the diameter below the rivet is expanded. The press-fitting may be performed by using, for example, a hammer, an air device, a hydraulic device, an electric device, and the like, and there are no particular restrictions.

FIG. 10 is a plan view of the decorative panel 2, and the frame 10 is attached to the periphery of the back surface of the decorative material 20 with fasteners. The frame 10 is fastened to a ceiling joist, a wall base, or the like, which will be described later.

FIG. 11 is an enlarged cross-sectional view taken along the line CC' of the BB' portion in FIG. Although the adhesive 60 is not particularly limited, it is preferably an elastic adhesive that can follow the expansion and contraction of the decorative material 20, such as a modified silicone adhesive.

FIG. 12 is an enlarged view of the essential part of FIG. 11. The projection of the fixing portion 40c of the rivet 40, which has been expanded in diameter by the press-fitting of the pin 30, presses the peripheral surface 25 of the bottomed hole 24. As a result, the frame 10 The decorative material 20 is firmly fixed by the fastener 50 by improving the pull-out strength of the rivet. In the present invention, by using the adhesive and the diameter-expandable fastener in combination, the fastening between the frame and the decorative material becomes stronger. In addition, sufficient fixing strength can be exhibited until the adhesive is cured.

The diameter of the bottomed hole 24 is, for example, 2.0-8.0 mm, more preferably 4.1-5.5 mm. Within this range, the rivet tends to be firmly fastened.

When the thickness of the decorative material 20 is less than 1 cm, especially about 3 to 6 mm, the depth d of the bottomed hole 24 is preferably within the range shown by the following formula (1) where T is the thickness of the decorative material. Within this range, there is a tendency that the fastening of the rivet is strong and damage to the decorative material 20 can be suppressed.

0.25T≤d≤0.85T (1)

FIG. 13 is an exploded perspective view of the essential parts showing the method of manufacturing the decorative panel 2. As shown in FIG. An adhesive 60 is applied to the peripheral edge of the decorative material 2 , the fasteners 50 are inserted through the through holes 16 provided at various places in the frame 10 , and part of the lower portion of the fastener 50 is attached to the peripheral edge of the back surface of the decorative material 20 . It is embedded in the hole 24 and fastened.

The decorative material is an organic wood base material such as MDF, particle board, and plywood, or an inorganic base material such as a gypsum board, a calcium silicate board, and a cement board, or a plastic foam material, and a decorative layer is provided as the base material. Examples include decorative boards and decorative boards such as thermosetting resin decorative boards. Among the decorative materials, if fire resistance is required, flame-retardant and non-combustible decorative boards, thermosetting resin decorative boards, calcium silicate, etc. A board, a decorative material having a plastic foam material as a base material, or the like can be appropriately selected and used.

Among the above-mentioned thermosetting resin decorative boards, nonflammable decorative boards are preferable because they are excellent in the effect of pressing the peripheral surface of the bottomed hole by expanding the diameter of the rivet. The reason for this is that the noncombustible decorative board consists of a decorative layer mainly made of thermosetting resin-impregnated pattern paper, and a core layer containing an organic resin component and an inorganic and/or organic flame retardant material on an inorganic fibrous base material. is essential, and the organic resin content of the core layer, which occupies most of the thickness of the noncombustible decorative board, is as small as 10% by weight or less.

As a noncombustible decorative board, for example, a noncombustible melamine decorative board includes a core layer containing an organic resin component and a flame retardant material, using a melamine resin-impregnated pattern paper as a decorative layer, using a glass fiber nonwoven fabric as an inorganic fiber base material. mentioned. In addition to noncombustible decorative boards, inorganic noncombustible decorative materials with a specific gravity in the range of 0.8 to 1.0, such as decorative materials based on calcium silicate boards, so-called decorative calcium silicates, can also be fastened to frames with fasteners. Therefore, it can be preferably used.

The thickness of the noncombustible melamine decorative board or inorganic noncombustible decorative material is preferably less than 1 cm, and more preferably 2.5 mm to 6.0 mm. It tends to be easy to work on without being damaged inside.

In addition, the noncombustible decorative board has a heat generation test of 20 minutes with a cone calorimeter in accordance with ISO 5660, and the total heat generation amount is 8 MJ / m ² or less, and the maximum heat generation rate exceeds 200 kW / m ² continuously for 10 seconds or more. It is a decorative panel that satisfies the condition that there are no cracks or cracks penetrating to the back surface of the specimen after the test.

FIG. 14 is a cross-sectional view showing the mounting structure of the decorative panel 2. The bottom 71 of the joist 70 is placed in contact with the bent pieces 12 of the adjacent frames, straddled and fastened with screws 75. It is In the case of the noncombustible decorative board, since it is an organic system, it is preferable to separate adjacent noncombustible decorative boards in consideration of expansion and contraction. The width of the gap is preferably 15 to 30 mm, for example, and the mounting position and shape of the frame are appropriately considered.

15 is a front view of another pin 31, FIG. 16 is a perspective front view of another rivet 41, FIG. 17 is a perspective front view of the fastener 51 before use, and FIG. 18 is a fastener 51 in use. 1 is a transparent front view showing a state of . A head portion 31a having a diameter larger than that of the body 31b is formed on the upper portion of the pin 31 so as to increase the contact area when it is press-fitted with a hammer or the like. As shown in FIG. 16, the rivet 41 is not formed with projections and recesses as a fixing portion, and the contact area with the peripheral surface of the bottomed hole is large because there is no recess. As shown in FIG. 16, when the pin 31 is not press-fitted, it has a cylindrical shape with a constant diameter.

19 is a front view of yet another pin 32. FIG. The upper portion of the pin 32 is provided with an unevenness 32e as a hooking portion for the rivet 40 or 41, so that when the rivet 40 or 41 is press-fitted, the pin 32 is difficult to come off.
The present invention will be described in detail below with reference to examples.

(Example 1)
(1) The frame has a first opening, a bent piece at the tip of the first opening, and a convex part at the bottom of the first opening in the direction of the first opening. A frame provided with a second opening on the opposite side of the first opening is provided in the convex portion, and through holes are provided in places in the convex portion.
(2) Fastener An aluminum rivet with an aluminum pin, a diameter of 4.0 mm, four slits with a width of 0.2 mm, and a mountain-shaped unevenness as a fixing part on the outer peripheral surface below. A fastener 50 consisting of
(3) Manufacture of decorative panel Conforms to ISO5660-1, has a thickness of 3.0 mm, a specific gravity of 1.7, and an organic resin content of the core layer of 10% by weight. Prepare the following nonflammable melamine decorative board (trade name: Cerarl, Cerarl is a registered trademark, manufactured by Aica Kogyo Co., Ltd.), and make bottomed holes with a depth of 2.5 mm and a diameter of 4.1 mm in places on the periphery of the back surface. was provided, and a modified silicone-based adhesive was applied as an elastic adhesive to the periphery. Next, the fastener was inserted through the through-hole of the frame, and the lower part of the rivet was embedded in the bottomed hole of the nonflammable melamine decorative board.
After that, a pin was press-fitted into the rivet to expand the diameter of the rivet, and the frame and the nonflammable melamine decorative board were fastened to obtain the decorative panel according to Example 1, and the pull-out strength was measured.

(Examples 2-6)
<Manufacturing of decorative panels>
Decorative panels according to Examples 2 to 6 were obtained in the same manner as in Example 1 except that they were performed under the conditions shown in Table 1, and the pull-out strength was measured.

<Installation of decorative panels and joists>
Next, the two decorative panels 2, 2' of Example 2 are placed next to each other with a gap of 15 mm as shown in FIG. By tightening with screws 75, a mounting structure for the decorative panel consisting of the decorative panel and the ceiling joist was obtained. When this mounting structure for the decorative panel was mounted on the ceiling surface, workability was good, the mounting was very strong, and there was no problem with the finish.

(Examples 7-12)
<Manufacturing of decorative panels>
In Example 1, fasteners 51 were prepared which consisted of steel pins 31 shown in FIGS. Next, the decorative panels of Examples 7 to 12 were obtained in the same manner except that they were carried out under the conditions shown in Table 1, and their pull-out strengths were measured.

(Installation of decorative panels and joists)
Two decorative panels obtained in Example 8 were placed next to each other with a gap of 15 mm in the same manner as in Example 2, and fastened to the ceiling joist, thereby obtaining a decorative panel mounting structure consisting of the decorative panel and the ceiling joist. . When this mounting structure for the decorative panel was mounted on the ceiling surface, workability was good, the mounting was very strong, and there was no problem with the finish.

(Examples 13-20)
<Manufacturing of decorative panels>
An inorganic noncombustible decorative board having a decorative layer of acrylic resin coating on the outermost layer of a calcium silicate board having a thickness of 6 mm and a specific gravity of 0.8 was prepared. Next, in Example 1, the above inorganic noncombustible decorative material was used in place of the noncombustible melamine decorative board, and the decorative panel according to Examples 13 to 20 was performed in the same manner except that the conditions shown in Table 1 were used. was obtained and the pull-out strength was measured.

<Installation of decorative panels and joists>
The decorative panels obtained in Example 14 were placed next to each other with a gap of 15 mm in the same manner as in Example 2, and were fastened to the ceiling joist to obtain a decorative panel mounting structure consisting of the decorative panel and the ceiling joist. When this mounting structure for the decorative panel was mounted on the ceiling surface, workability was good, the mounting was very strong, and there was no problem with the finish.

(Examples 21-28)
<Manufacturing of decorative panels>
In Example 13, the fastener 51 used in Example 7 was used, and the decorative panels according to Examples 21 to 28 were obtained in the same manner except that they were performed under the conditions shown in Table 1, and the pull-out strength was measured. was measured.

<Installation of decorative panels and joists>
The decorative panels obtained in Example 22 were placed next to each other with a gap of 15 mm in the same manner as in Example 2, and were fastened to the ceiling joist to obtain a decorative panel mounting structure consisting of the decorative panel and the ceiling joist. When this mounting structure for the decorative panel was mounted on the ceiling surface, workability was good, the mounting was very strong, and there was no problem with the finish.

(Example 29)
<Manufacturing of decorative panels>
A decorative panel according to Example 29 was obtained in the same manner as in Example 9 except that the pins 32 shown in FIG. 19 were used, and the pull-out strength was measured.

<Installation of decorative panels and joists>
The decorative panels obtained in Example 29 were placed next to each other with a gap of 15 mm in the same manner as in Example 9, and fastened to the ceiling joists to obtain a decorative panel mounting structure consisting of the decorative panels and the ceiling joists. When this mounting structure for the decorative panel was mounted on the ceiling surface, workability was good, the mounting was very strong, and there was no problem with the finish.

(Examples 30-38)
<Manufacturing of decorative panels>
Examples 30 to 38 were carried out in the same manner as in Example 8, except that the adhesive shown in Table 1 was applied to the inside of the bottomed holes provided in places on the periphery of the back surface of the nonflammable melamine decorative board. A decorative panel was obtained and the pull-out strength was measured.

<Measurement of pull-out strength>
Test piece: A square having a side of 50 mm was inserted with a pin into the rivet as shown in FIG. In FIG. 20, φ is the diameter of the rivet, W is the diameter of the bottomed hole of the test piece, d is the depth of the bottomed hole, and T is the thickness of the decorative material.
Test method: Based on the Japanese Agricultural Standards for Structural Panels (November 28, 2013 Ministry of Agriculture, Forestry and Fisheries Notification No. 2904 “Normal Peeling Test”), it was carried out at an upward crosshead speed of 2 mm / min. Fig. 2 shows a front view of the test method;

2 Decorative panel 10 Fastening frame 11 First opening 12 Folded piece 13 Bottom surface 14 Bottom 15 Convex portion 16 Through hole 17 Second opening 20 Decorative material 22 Peripheral edge 24 Bottomed hole 25 Peripheral surface 30 Pin 30c Conical shape Part 31 Pin 31a Head 31b Body 31c Conical part 32 Pin 32a Head 32b Body 32c Conical part 32e Hooking part 40 Rivet 40a Head 40b Hollow part 40c Fixing part 40d Slit 41 Rivet 41a Head 41b Hollow part 41d Slit 50 Fastener 51 Fastener 60 Adhesive 70 Ceiling 71 Bottom 75 Screw

Claims (7)

A decorative panel comprising a frame on the periphery of the back surface of the decorative material,
The frame has a first opening, a bent piece at the tip of the first opening, and a convex portion in the direction of the first opening at the bottom of the first opening. , the convex portion has a second opening in the direction opposite to the first opening,
The decorative material and the frame are fastened with a fastener that can be expanded in diameter,
A decorative panel, wherein the decorative material is a thermosetting resin decorative board (excluding those laminated with metal sheets) . 2. The decorative panel according to claim 1, wherein the fastener includes a pin and a rivet, and the bottom of the rivet is embedded in a bottomed hole provided on the back surface of the decorative material. 3. The decorative panel according to claim 2, wherein said pin is inserted through and press-fitted into a hollow portion of said rivet so as to be integrated therewith. 4. The decorative panel according to claim 2, wherein the lower portion of said rivet presses the periphery of said bottomed hole. 4. The decorative panel according to claim 2, wherein the depth d of the bottomed hole is within the range represented by the following formula (1) where T is the thickness of the decorative material.
0.25T≤d≤0.85T (1) 4. The decorative panel according to claim 2 or 3, which has a pull-out strength of 7.2 to 18.4 kgf according to the following test method.
Test method: Based on Japanese Agricultural Standards for Structural Panels (November 28, 2013 Ministry of Agriculture, Forestry and Fisheries Notification No. 2904 "Normal Peeling Test", upward crosshead speed of 2 mm / min. 4. The decorative panel according to claim 2, wherein an adhesive is applied to the interior of said bottomed hole.

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