JPS6142830Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a long front plate 1 and a back plate 2 facing each other at an appropriate interval, curves both side edges of the front plate 1 toward the back side over the entire length, and curves one curved portion. The end edge of the curved part 1a extends outward to form a male part 3, and the female part 4 is formed between the end edge of the other curved part 1b and the back plate 2. This relates to a decorative board formed by filling both longitudinal ends of a hollow part 5 formed between the face plate 2 and the face plate 2 with thermoplastic synthetic resin except for the vicinity of the female part 4, and the decorative boards are actually fitted together. To provide a decorative board which can prevent a gap from occurring at a joining part when joining at a time.

Conventionally, as shown in FIG. 1a, both side edges of the surface plate 1 are curved toward the back side, the edge of one curved part 1a is extended outward to form a male part 3, and the edge of the other curved part 1a is bent outward. 1b
Since the curved part 1b is not fixed in the decorative board in which the female part 4 is formed between the edge of the board and the back plate 2, it tries to return to its original shape as shown by the dotted line in Figure b. As the curvature of the curved portion 1b changes over time, the opening width of the female portion 4 becomes larger and the actual fit becomes looser, which weakens the bonding strength between the decorative plates and also causes the actual fit to become looser. There was an inconvenience that a gap occurred at the joint. In order to solve this problem, as shown in FIG. 2, a curved part 1b made of wood or plywood is inserted at the longitudinal end of the hollow part 5 formed between the front plate 1 and the back plate 2. There was one with a stop 11. however,
In such a conventional example, although it is possible to prevent the curvature of the curved portion 1b from changing over time, if the dimensional accuracy between the thickness of the male part 3 and the opening width of the female part 4 is poor, As shown in Figure 3, there is a gap 1 at the actual mating part.
There was a problem that 2 occurred. The present invention has been made in view of the above points.

Examples will be described below using figures. Fourth
The figure shows one embodiment of the present invention, in which numeral 1 is a long surface plate made of plywood made of a plurality of laminated veneers, and both side edges of the surface plate 1 are curved toward the back side over the entire length. A male part 3 is formed by extending the edge of one curved part 1a outward, and the edge of the other curved part 1b is connected to the back plate 2 facing the front plate 1 at an appropriate interval. A female fruit part 4 is formed in between. Reference numeral 6 indicates a filling part of thermoplastic synthetic resin, and the synthetic resin is filled in the longitudinal end of the hollow part 5 formed between the front plate 1 and the back plate 2, and is not filled in the vicinity of the female part 4. Therefore, the thickness of the synthetic resin layer on the back surface of the curved portion 1b is reduced.

Now, since thermoplastic synthetic resin does not deform unless heat is applied, the front plate 1 and the back plate 2
is fixed with adhesive at the filling part 6, and the effect of preventing the curved part 1b from returning is obtained as in the conventional example shown in FIG. become. In addition, even if a gap occurs in the actual mating part due to poor dimensional accuracy between the male part 3 and the female part 4, the curved part 1b is heated to soften the synthetic resin on the back side of the curved part 1b. By slightly modifying the curvature of 1b, the opening size of the female part 4 can be adjusted, and it is possible to prevent a gap from occurring in the actual fitting part.

Figures 5 and 6 show other embodiments, including a surface plate 7 made of a semi-transparent sheet with a thickness of 0.2 to 0.35 mm, and a core material made of a lauan veneer with a thickness of 0.6 to 2.0 mm. A surface plate 1 is formed by interposing an intermediate sheet 9 of paper, resin-impregnated paper, resin film, hot melt sheet, etc. between the intermediate sheet 8 and the intermediate sheet 9, and a coating 10 is applied to the edge of the intermediate sheet 9. The paint 10 is visible through the surface plate 7, and only the male part 3 is colored, and the male part 3 has the same pattern as the other parts, but has a slightly different natural (unnatural) appearance. (No) It creates a three-dimensional effect of the actual mating part that becomes groove-shaped when colored, and can give a high-class image to ceilings, walls, etc. formed by joining decorative boards.
In addition, since the intermediate sheet 9 has elasticity, the surface plate 1
It is difficult for cracks to occur on the surface plate 1.
It also becomes easier to bend.

As described above, the present invention has a long front plate and a back plate facing each other at an appropriate interval, curves both side edges of the front plate toward the back side over the entire length, and curves the edge of one curved part outward. A male part is formed by extending toward the rear plate, and a female part is formed between the edge of the other curved part and the back plate, and a hollow part formed between the front plate and the back plate is formed. Both longitudinal ends are filled with thermoplastic synthetic resin except for the vicinity of the female part, and the back plate and top plate are adhesively fixed by the thermoplastic resin, and the curvature of the curved part of the top plate changes over time. Therefore, there is no gap in the actual mating part, and if the dimensional accuracy of the male and female parts is poor, the curved part can be heated to remove the synthetic resin on the back side of the curved part. By softening and correcting the curvature of the curved part, there is an advantage that the opening size of the female part can be adjusted to prevent a gap from occurring in the actual fitting part.

[Brief explanation of the drawing]

Fig. 1a is a perspective view of a conventional example, Fig. 1b is a view showing the same problem as above, Fig. 2 is a perspective view of another conventional example,
Fig. 3 is a diagram showing the same problem as above, Fig. 4 is a perspective view of one embodiment of the present invention, Fig. 5 is an exploded perspective view of main parts of another embodiment, and Fig. 6 is a sectional view of the same. . 1 is a front plate, 1a and 1b are curved parts, 2 is a back plate, 3 is a male part, 4 is a female part, 5 is a hollow part, and 6 is a part filled with thermoplastic synthetic resin.

Claims (1)

[Scope of utility model registration request] A long front plate and a back plate are placed opposite to each other at an appropriate interval, and both edges of the front plate are curved toward the back side over the entire length, and the edge of one curved portion is extended outward to form a male A male part is formed between the edge of the other curved part and the back plate, and heat is applied to both longitudinal ends of the hollow part formed between the front plate and the back plate. A decorative board made of plastic synthetic resin filled except for the vicinity of the female part.