JP7117618B2 - Screws for fixing the decorative ceiling plate and mounting structure of the decorative ceiling plate - Google Patents

Description

The present invention relates to a ceiling decorative plate fixing screw for fixing a ceiling decorative plate to a ceiling foundation, and a ceiling decorative plate fixing structure for fixing the ceiling decorative plate to the ceiling foundation with the ceiling decorative plate fixing screw.

2. Description of the Related Art Conventionally, in the technique of fixing a ceiling decorative plate using screws for fixing the ceiling decorative plate, there has been a problem that the head of the screw, particularly the driver groove, is exposed to the indoor side, thereby spoiling the design of the ceiling decorative plate. Even in ceiling decorative panels with irregular pattern elements, such as a travertine pattern, the cross holes in the driver grooves are conspicuous and extremely unnatural.

Various methods have been adopted to solve such problems. For example, Patent Document 1 proposes a blindfold cap that covers the surface of a screw head.

JP 2009-191979 A

However, in the case of the above document, the cap can be attached only after the cap has been screwed once. Therefore, the installation work of the decorative ceiling panel is extremely troublesome and time-consuming, and the installation cost increases. Also, the cost of the cap member is high. Furthermore, since this method completely hides the surface of the head of the screw, there is a possibility that the surrounding pattern does not exist only in that portion, which is rather unnatural.

Conventionally, the surface of the screw head, including the screwdriver groove, is painted in the same color as the background of the ceiling (e.g., white), but the screwdriver groove is painted when the screw is inserted into the screw. Painting the inside of the driver groove has little effect because it is scraped off at the tip. In the first place, since the driver groove is a concave portion, even if the inside of the groove is painted white, the inside of the groove becomes a shadow, and the shape is exposed almost clearly.

SUMMARY OF THE INVENTION The present invention has been proposed in consideration of such circumstances, and its object is to minimize the conspicuousness of screws for fixing ceiling decorative panels without increasing the cost due to the troublesome installation of ceiling decorative panels. To provide a screw for fixing a decorative ceiling plate and a mounting structure of the decorative ceiling plate.

In order to achieve the above object, the ceiling decorative plate fixing screw of the present invention is a ceiling decorative plate fixing screw for fixing a ceiling decorative plate to a ceiling foundation, wherein the ceiling decorative plate is provided with a blackish dark A surface pattern is formed by interspersing irregularly colored pattern elements on a background lighter in color than the pattern elements, a screw head is formed with a driver groove, and the surface of the screw head is , a light-colored portion having substantially the same color as the background color of the ceiling decorative panel and a dark-colored portion having substantially the same color as the pattern element , wherein the dark-colored is formed so as to overlap the driver groove .

Further, the ceiling decorative board mounting structure of the present invention is a ceiling decorative board fixing structure in which the ceiling decorative board is fixed to the ceiling base with screws for fixing the ceiling decorative board, and the ceiling decorative board has a blackish dark color. are scattered on a background lighter in color than the pattern elements, and the ceiling decorative plate fixing screw has a screw head formed with a driver groove, The surface of the screw head is composed of a light-colored portion having substantially the same shade as the background color of the ceiling decorative plate and a dark-colored portion having substantially the same color as the pattern element. It is characterized in that it is formed in a color arrangement, and the dark color portion is formed so as to overlap with the driver groove .

Since the mounting structure of the decorative ceiling panel of the present invention is configured as described above, the construction of the decorative ceiling panel is not troublesome and costly, and conspicuousness of screws for fixing the ceiling decorative panel can be suppressed as much as possible.

In addition, since the mounting structure of the ceiling decorative plate of the present invention is configured as described above, similarly, the installation of the decorative ceiling plate is not troublesome and costly, and the conspicuousness of the screws for fixing the ceiling decorative plate is suppressed as much as possible. be able to.

(a) is a front view of a ceiling surface using a ceiling decorative plate fixing screw according to an embodiment of the present invention, and (b) is an enlarged view of the surface of the screw head of the same screw. (a) and (b) are partial vertical cross-sectional views of a ceiling decorative panel mounting structure showing two examples of fixing modes of the screw, and (c) is an enlarged longitudinal sectional view showing an example of the ceiling decorative panel. (a) to (d) are diagrams showing four examples of the surface pattern of the screw head.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings. First, a schematic basic configuration of one embodiment of the ceiling decorative plate fixing screw of the present invention will be described.

The ceiling decorative board fixing screw 10 (hereinafter abbreviated as “the screw 10”) is a fixture for fixing the ceiling decorative board 20 to the ceiling foundation 30 . That is, the fixing structure of the present ceiling decorative board is a structure in which the ceiling decorative board 20 is fixed to the ceiling foundation 30 with the screws 10 .

In this embodiment, as shown in FIG. 1(a), the ceiling decorative panel 20 is provided with irregular pattern elements 26 of dark black color scattered on a background 27 of a color lighter than the pattern elements 26. A surface pattern 25 is formed. In addition, a driver groove 12 is formed in the screw head 11, and the surface of the screw head 11 has a light-colored portion 15 in which the color of the background 27 of the ceiling decorative plate 20 and the degree of shading are substantially the same, The pattern elements 26 and the dark-colored portions 16 having substantially the same color are arranged.

In short, as shown in FIG. 1(a), the light-colored portion 15 of the screw head 11 is substantially the same color as the base 27 of the ceiling decorative panel 20, and the dark-colored portion 16 of the screw head 11 is similar to the color of the ceiling decorative panel 20. is approximately the same as the color of the pattern element 26 of .

Here, the color of the background 27 of the ceiling decorative panel 20 is a light color such as white, and the color of the pattern element 26 is a dark color such as black. , and the dark color may be a darker gray. Moreover, the color other than black may be added.

Next, this embodiment will be described in detail.

Specifically, the surface pattern 25 of the decorative ceiling panel 20 may be, for example, a travertine pattern or a similar pattern. The pattern elements 26 are not limited to those having a blackish dark color due to the shadows of recesses and holes, and may be formed by painting or printing. In short, the entire surface pattern 25 in which the pattern elements 26 are scattered on the ground 27 may be printed, or the material surface of the ceiling decorative panel 20 may be the ground 27 and the pattern elements 26 are scattered thereon. It may be printed as it should be.

The pattern elements 26 illustrated in FIG. 1(a) have irregular shapes and various sizes, and are scattered irregularly. A combination of a plurality of pattern elements 26 may appear like a repeating pattern.

On the other hand, the surface of the screw head 11 has a dark color portion 16 roughly matching the color of the pattern element 26 of the ceiling decorative plate 20 and a light color portion 15 roughly matching the color of the base 27 of the ceiling decorative plate 20. It is configured.

The color matching between the surface pattern 25 and the surface of the screw head 11 may be a rough match. In particular, since a large number of pattern elements 26 are scattered and a difference in densities is likely to occur, the dark-colored portion 16 may be colored in a blackish dark color having an average density of the large number of pattern elements 26 . Further, since the dark-colored portion 16 is added to make the driver groove 12 inconspicuous, it may be adjusted to the degree of shade of the shadow of the driver groove 12 . The light-colored portion 15 may be colored by painting to match the color of the base 27 of the ceiling decorative panel 20 .

In FIGS. 1(a) and 1(b), the pattern elements 26 of the ceiling decorative panel 20, and the driver grooves 12 and the dark-colored portions 16 of the screws 10 are colored black with a uniform density. As mentioned, it is of course not limited to this.

Alternatively, the screw head 11 may be colored by first painting the entire surface of the screw head 11 with the color of the light-colored portion 15 and then partially overcoating the dark-colored portion 16, A color scheme may be formed by printing a pattern that matches the entirety of the screw head 11 in accordance with the circular shape of the screw head 11 .

If the ceiling decorative plate 20 is fixed using such a screw 10, the screw head 11 and the driver groove 12 are not very conspicuous as shown in FIG. Unlikely. In FIG. 1(a), the circular outline (peripheral edge 13) of the screw head 11 is shown for convenience in order to distinguish the screw head 11 from the surroundings. By matching the color of the base 27 of the decorative plate 20, the peripheral edge 13 is actually difficult to see, and there is almost no possibility that the contour of the screw head 11 will degrade the design.

Also, the screw head 11 may be colored with the above color scheme at a factory or the like before construction. Therefore, at the construction site, there is no need to perform any special work other than the fixing work with the screws 10, and the same work as before can be performed. Therefore, the construction work does not become troublesome, and there is almost no possibility that the construction cost will increase. Also, there is no need to use a member that hides the screw head 11 .

As the screw 10, as shown in FIG. 1(b), from the viewpoint of inconspicuousness of the driver groove 12, one formed with a cross hole is preferably used. Further, as in the example of FIG. 1(b), the lengths of the lateral groove 12a and the longitudinal groove 12b forming the cross hole are substantially the same, and the length L1 is 1/2 or less of the diameter L2 of the screw head 11. From the standpoint of inconspicuousness, it is desirable to use the one with

Further, the diameter L2 of the screw head 11 can be varied in consideration of the dimensional relationship between the pattern element 26 and the driver groove 12 and the dimensional relationship between the pattern element 26 and the contour (periphery 13) of the screw head 11. It should be decided. Considering a general travertine pattern, the diameter L2 of the screw head 11 is desirably 5-15 mm, more desirably 6-12 mm.

2(a) and 2(b) are partial longitudinal sectional views showing two examples of fixing modes of the screw 10. FIG. In this figure, the ceiling base 30 is made of metal and is formed in a grooved or cylindrical shape, and the screw 10 has a fixed structure in which the threaded portion 18 is fixed to a substrate portion 31 such as a grooved member. . As the ceiling base 30 for fixing the screws 10, a steel ceiling base or a so-called light ceiling base using a light iron material can be adopted as a metal one. Of course, the ceiling base 30 may be a wooden ceiling base.

In the example shown in FIG. 2, the decorative ceiling panel 20 is made of foamed resin as a base material. That is, as shown in FIG. 2(c), the decorative ceiling panel 20 of this example has glass cloth layers 23 and 22 formed of glass fibers above and below a foamed resin layer 21, and the glass on the indoor surface side. It has a layer structure in which a decorative paper layer 24 is arranged as a lower layer of the cloth layer 22 .

Glass paper is preferably used as the decorative paper layer 24, and a surface pattern 25 (see FIG. 1(a)) is printed with paint on the surface of the glass paper (the surface facing the room). As a printing paint, a black pigment containing a binder in calcium carbonate or titanium oxide is preferably used.

The screws 10 pass through the ceiling decorative plate 20 and are secured and fixed to the base plate portion 31 of the ceiling foundation 30 on the upper side thereof.

When using the ceiling decorative plate 20 and the ceiling foundation 30 as shown in this figure, the screw head 11 has a flat shape (see FIG. 2(a)) or a dish shape (see FIG. 2(b)). should be used.

When the flat-shaped screw head 11 is used, a shadow protrudes below the surface of the ceiling decorative plate 20, but if the thickness is about 1 to 1.5 mm, the shadow caused by the screw head 11 is small. Inconspicuous and almost no problem. In particular, if there is a dark-colored portion 16 in contact with the peripheral edge 13 as shown in FIG. 1B, the conspicuous shadow can be reduced. When the dish-shaped screw head 11 is used, since most of the screw head 11 is embedded in the ceiling decorative panel 20, there is of course no problem.

Since the fastening structure is as described above, in order to hold the threaded portion 18 on the ceiling base plate 30, in FIG. A slightly shorter screw 10 is preferably used. Also, in FIG. 2(b) , screws 10 whose plate height and neck portion 17 length are substantially equal to or slightly shorter than the thickness of the ceiling decorative plate 20 are preferably used.

In addition, the diameter of the neck portion 17 is desirably 4 to 14 mm (preferably 5 to 8 mm) in the case of a metal groove-shaped base as shown in this figure. Moreover, it is preferable to use the screw 10 in which the threaded portion 18 is composed of a double thread, and the length of the threaded portion 18 is preferably 3 to 13 mm.

FIG. 2 exemplifies the decorative ceiling board 20 that uses a foamed resin as a base material, but it is needless to say that the ceiling decorative board 20 is not limited to this, and various materials such as a gypsum board may be used. Further, the surface pattern 25 is not limited to being printed, and may be pattern elements 26 formed by shadows of recesses or holes.

Next, an example of the coloration configuration of the screw head 11 will be described with reference to FIGS. 3(a) to 3(d). In these figures, in order to distinguish between the dark colored portion 16 and the driver groove 12, the dark colored portion 16 is given a cross hatching pattern for convenience.

The screw head 11 shown in FIG. 3( a ) is arranged so that the plurality of irregular dark-colored portions 16 having approximately the same dimensions as the pattern elements 26 of the ceiling decorative plate 20 do not come into contact with either the driver groove 12 or the peripheral edge 13 . , are formed so as to be scattered on the ground (light-colored portion 15) of the surface.

The screw head 11 shown in FIG. 3B is configured such that a plurality of irregular dark-colored portions 16 having approximately the same dimensions as the pattern elements 26 of the ceiling decorative plate 20 do not contact the driver groove 12 and are in contact with the peripheral edge 13 . It is considered to be a pattern formed in

In the screw head 11 shown in FIG. 3(c), one dark-colored part 16 of irregular shape having approximately the same dimensions as the pattern element 26 of the ceiling decorative plate 20 does not contact the peripheral edge 13 and is part of the driver groove 12. It is considered to be a pattern formed so as to overlap with.

The screw head 11 shown in FIG. It is considered to be a pattern formed in

According to the pattern (see FIGS. 3B and 3D) in which the dark-colored portion 16 is in contact with the peripheral edge 13, the circular peripheral edge 13 can be made less conspicuous. In addition, according to the pattern in which the dark-colored portion 16 overlaps the driver groove 12 (see FIGS. 3(c) and 3(d)), the driver groove 12 can be made inconspicuous, and the unnaturalness caused by the exposure of the cross recess can be eliminated. be able to. In short, according to these illustrated examples, the surface of the screw head 11 can be blended with the surface pattern 25 of the ceiling decorative panel 20 .

Needless to say, the color scheme and pattern on the surface of the screw head 11 are not limited to the four examples shown in FIG. .

REFERENCE SIGNS LIST 10 screw for fixing ceiling decorative plate 11 screw head 12 driver groove 13 peripheral edge 15 light-colored portion 16 dark-colored portion 20 ceiling decorative plate 25 surface pattern 26 pattern element 27 ground 30 ceiling foundation

Claims (5)

A ceiling decorative plate fixing screw for fixing the ceiling decorative plate to the ceiling base,
The ceiling decorative panel has a surface pattern formed by interspersing dark black irregular pattern elements on a background of a lighter color than the pattern elements,
A driver groove is formed in the head of the screw, and the surface of the head of the screw includes a light-colored portion having a color substantially the same as the background color of the ceiling decorative plate and a light-colored portion substantially the same as the pattern element. The color scheme is composed of a dark color part with the color of
A ceiling decorative plate fixing screw , wherein the dark-colored portion is formed so as to overlap the driver groove . In claim 1,
A ceiling decorative plate fixing screw, wherein the dark-colored portion is formed so as to be in contact with the peripheral edge of the screw head. In claim 1 or 2,
A ceiling decorative plate fixing screw, wherein the dark-colored portion is formed so as to overlap the entire driver groove. In any one of claims 1 to 3,
The diameter of the screw head is 5 to 15 mm, and the length of the driver groove is 1/2 or less of the diameter of the screw head. A ceiling veneer fixing screw characterized by: A ceiling decorative board fixing structure for fixing the ceiling decorative board to the ceiling base with a ceiling decorative board fixing screw,
The ceiling decorative panel has a surface pattern formed by interspersing dark black irregular pattern elements on a background of a lighter color than the pattern elements,
The ceiling decorative plate fixing screw has a screw head formed with a driver groove, and the surface of the screw head is a light-colored portion having a color substantially the same as the background color of the ceiling decorative plate. and a dark color portion having substantially the same color as the pattern element,
A mounting structure for a decorative ceiling panel, wherein the dark-colored portion is formed so as to overlap the driver groove. .

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