JP2019178480A - Screw for fixing decorative ceiling board and fitting structure of decorative ceiling board - Google Patents

Abstract

To provide a screw for fixing a decorative ceiling board and a fitting structure of a decorative ceiling board, which enables controlling standout of screws from the decorative ceiling board as much as possible without making installation complicated and increasing installation costs.SOLUTION: A screw 10 for fixing a decorative ceiling board 20 to a ceiling substrate 30 includes a screwdriver groove 12 formed at a screw head 11, and the surface of the screw head 11 is colored with a combination of a light-colored part 15, almost same degree of depth of color with the color of a base 27 of the decorative ceiling board 20, and deep colored parts 16, almost same color with pattern elements 25 of the decorative ceiling board 20.SELECTED DRAWING: Figure 1

Description

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

  Conventionally, in the technique of fixing a ceiling decorative plate using a ceiling decorative plate fixing screw, there has been a problem that the design of the ceiling decorative plate is impaired by exposing the screw head, particularly the driver groove, to the indoor side. Even in a ceiling decorative board with a travertine pattern, for example, where irregular pattern elements are scattered, the cross holes in the driver groove are conspicuous, making it extremely unnatural.

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

JP 2009-191979 A

  However, in the above-mentioned document, since the cap can be attached only after screwing once, the construction work of the ceiling decorative board is very troublesome and requires time, and the construction cost increases. Moreover, the cost of a cap member also starts. Furthermore, since the surface of the screw head is completely hidden by this method, there is a possibility that the surrounding pattern does not exist only in that portion, which may become unnatural.

  Conventionally, the screw head surface including the driver groove has been painted to the same color as the ceiling ground color (for example, white). Since it is scraped off at the tip, there is almost no effect of painting in the driver groove. In the first place, the driver groove is a recess, so 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.

  The present invention has been proposed in consideration of such circumstances, and its purpose is to suppress the conspicuousness of the ceiling decorative plate fixing screw as much as possible without making the ceiling decorative plate troublesome and costly. An object of the present invention is to provide a ceiling decorative plate fixing screw and a ceiling decorative plate mounting structure.

  In order to achieve the above object, the ceiling decorative board fixing screw of the present invention is a ceiling decorative board fixing screw for fixing the ceiling decorative board to a ceiling base, A surface pattern is formed by interspersing irregularly colored pattern elements on a lighter-colored background than the pattern element, a screw groove is formed on the screw head, and the surface of the screw head is The color of the ceiling decorative board is composed of a light-colored portion with the same color as the background color and a dark-colored portion with substantially the same color as the pattern element. Features.

  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 a ceiling decorative board fixing screw, and the ceiling decorative board has a dark black color. A surface pattern formed by interspersing irregular pattern elements in a lighter color ground than the pattern elements is formed, and the ceiling decorative board fixing screw has a driver groove formed on a screw head, The surface of the screw head is a color scheme of a light color portion to which the color of the ceiling decorative board is substantially the same as the color of the ceiling and a dark color portion to which the pattern element is substantially the same color. It is configured.

  Since the ceiling decorative board mounting structure of the present invention has the above-described configuration, the construction of the ceiling decorative board is not cumbersome and costly, and the conspicuousness by the ceiling decorative board fixing screw can be suppressed as much as possible.

  Also, since the ceiling decorative board mounting structure of the present invention has the above-described structure, similarly, the construction of the ceiling decorative board does not become cumbersome and costly, and the conspicuousness due to the ceiling decorative board fixing screw is minimized. be able to.

(A) is a front view of the ceiling surface using the ceiling decorative board fixing screw which concerns on one Embodiment of this invention, (b) is an enlarged view of the surface of the screw head of the screw. (A) and (b) are the partial longitudinal cross-sectional views of the attachment structure of a ceiling decorative board which shows the fixation aspect of 2 examples of the same screw, (c) is an expanded longitudinal cross-sectional view which shows the example of a ceiling decorative board. (A)-(d) is a figure which shows four examples of the surface pattern of the screw head.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. First, a schematic basic configuration of an embodiment of the ceiling decorative board fixing screw of the present invention will be described.

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

  In the present embodiment, as shown in FIG. 1A, the black decorative dark-colored pattern element 26 is scattered on the ceiling decorative board 20 on a ground 27 that is lighter than the pattern element 26. A surface pattern 25 is formed. Further, a screw groove 12 is formed in the screw head 11, and the surface of the screw head 11 has a light color portion 15 to which the color of the ground 27 of the ceiling decorative board 20 is substantially the same as the color, The pattern element 26 and the dark color portion 16 with substantially the same color are used for color arrangement.

  Thus, as shown in FIG. 1A, the light colored portion 15 of the screw head 11 is substantially the same as the color of the ground 27 of the ceiling decorative plate 20, and the dark colored portion 16 of the screw head 11 is the ceiling decorative plate 20. The color of the pattern element 26 is almost the same.

  Here, the color of the ground 27 of the ceiling decorative board 20 is a light color such as white, and the color of the pattern element 26 is a dark color such as black, but their relationship is relative, and the light color is gray. Then, the relationship that the dark color is darker than that may be used. Further, a color other than black may be added.

  Next, this embodiment will be described in detail.

  Specifically, as the surface pattern 25 of the ceiling decorative board 20, for example, a travertine pattern or the like can be cited. The pattern element 26 is not limited to a dark black color due to the shadow of the dent or hole, and may be formed by painting or printing. Thus, 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 board 20 is the ground 27, and the pattern elements 26 are scattered there. It may be printed as described.

  The pattern elements 26 illustrated in FIG. 1A are irregular and have various sizes, and they are irregularly scattered, but the surface pattern 25 has different shapes and sizes. A combination of a plurality of pattern elements 26 may appear as a repetitive pattern.

  On the other hand, the surface of the screw head 11 is composed of a dark color portion 16 that roughly matches the color of the pattern element 26 of the ceiling decorative board 20 and a light color portion 15 that roughly matches the color of the ground 27 of the ceiling decorative board 20. It is configured.

  The color matching between the surface pattern 25 and the surface of the screw head 11 may be almost the same. In particular, since many pattern elements 26 are scattered and a difference in density is likely to occur, the dark color portion 16 may be colored with a dark black color having an average density of the many pattern elements 26. Further, since the dark color portion 16 is added to make the driver groove 12 inconspicuous, the dark color portion 16 may be adjusted to the shade density of the driver groove 12. The light color portion 15 may be painted and colored in accordance with the color of the ground 27 of the ceiling decorative board 20.

  In FIGS. 1A and 1B, the pattern element 26 of the ceiling decorative board 20 and the driver groove 12 and dark portion 16 of the screw 10 are given black with a uniform density. Of course, this is not a limitation.

  Further, the screw head 11 may first be painted with the color as the light colored portion 15 on the entire surface of the screw head 11 and then partially overcoated with the dark colored portion 16 to form a color scheme, According to the circular shape of the screw head 11, a color scheme may be formed by printing a pattern that matches the whole.

  If the ceiling decorative board 20 is fixed using such a screw 10, the screw head 11 and the driver groove 12 are not so conspicuous as shown in FIG. 1A, and the design of the ceiling decorative board 20 is impaired. Unlikely. In FIG. 1A, 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. According to the color of the base 27 of the decorative board 20, the peripheral edge 13 is actually difficult to see, and the design of the screw head 11 is unlikely to deteriorate.

  Moreover, what is necessary is just to color the screw head 11 with the above-mentioned color scheme in a factory etc. before construction. Therefore, it is not necessary to perform a special work in addition to the fixing work with the screw 10 at the construction site, and the same work as the conventional work can be performed. Therefore, the construction work is not troublesome and there is almost no fear that the construction cost will increase. Further, it is not necessary to use a member that hides the screw head 11.

  As the screw 10, as shown in FIG. 1 (b), a driver groove 12 formed with a cross hole is preferably used from the viewpoint of difficulty in conspicuousness. Further, as in the example of FIG. 1B, the length of the horizontal groove 12a and the vertical groove 12b constituting the cross hole is substantially the same, and the length L1 thereof is ½ or less of the diameter L2 of the screw head 11. It is desirable from the viewpoint of difficulty in conspicuous use.

  Further, the diameter L2 of the screw head 11 has various dimensions 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 outline (periphery 13) of the screw head 11. It only has to be decided. Considering a general travertine pattern, the diameter L2 of the screw head 11 is preferably 5 to 15 mm, and more preferably 6 to 12 mm.

  FIGS. 2A and 2B are partial longitudinal sectional views showing two examples of fixing modes of the screw 10. In this example, the ceiling base 30 is made of metal and has a groove shape or a cylindrical shape, and the screw 10 has a fixing structure in which a screw portion 18 is fixed to a substrate portion 31 such as a groove shape material. . The ceiling base 30 for fixing the screw 10 may be a steel ceiling base or a so-called light ceiling base using a light iron material. The ceiling base 30 may of course be a wooden ceiling base.

  In the example of FIG. 2, a ceiling decorative board 20 that includes a foamed resin as a base material is used. That is, as shown in FIG. 2 (c), the ceiling decorative board 20 in this example includes glass cloth layers 23 and 22 formed of glass fibers on the top and bottom of the foamed resin layer 21, and glass on the indoor side. The decorative paper layer 24 is provided 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. 1A) is printed with a paint on the surface (surface facing the room) of the glass paper. As a printing paint, a black pigment containing a binder in calcium carbonate or titanium oxide is preferably used.

  The screw 10 penetrates the ceiling decorative board 20 and is fixed and fixed on the substrate portion 31 of the ceiling base 30 on the upper side.

  When the ceiling decorative board 20 and the ceiling base 30 as shown in this figure are used, the screw head 11 has a flat shape (see FIG. 2 (a)) or a dish 10 (see FIG. 2 (b)). It is desirable to use

  When the flat screw head 11 is used, the shadow protrudes below the surface of the ceiling decorative board 20 and a shadow is formed. However, if the thickness is about 1 to 1.5 mm, the shadow by the screw head 11 is small. It doesn't stand out and there is almost no problem. In particular, if there is a dark color portion 16 in contact with the peripheral edge 13 as shown in FIG. When the dish-shaped screw head 11 is used, since most of the screw portion 11 is embedded in the ceiling decorative plate 20, there is no problem.

  Since the fastening structure is as described above, in order to hold the threaded portion 18 with the ceiling base 30, in FIG. 2A, the length of the neck lower portion 17 is substantially the same as the thickness of the ceiling decorative plate 20, Slightly short screws 10 are preferably used. In FIG. 2 (b). A screw 10 in which the dish height and the length of the neck lower part 17 are substantially the same as or slightly shorter than the thickness of the ceiling decorative board 20 is preferably used.

  Further, the diameter of the neck lower 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 example. Moreover, the screw | thread 10 in which the screw part 18 was comprised by the double thread screw is used suitably, and it is desirable for the length of the screw part 18 to be 3-13 mm.

  FIG. 2 illustrates the ceiling decorative board 20 using a foamed resin as a base material. However, the present invention is not limited to this, and it goes without saying that various types such as a plaster board may be used. Further, the surface pattern 25 is not limited to printing, and the pattern element 26 may be formed by a shadow of a dent or a hole.

  Next, an example of the color arrangement configuration of the screw head 11 will be described with reference to FIGS. In these drawings, in order to distinguish the dark color portion 16 from the driver groove 12, the dark color portion 16 is provided with a cross-hatched pattern for convenience.

  The screw head 11 in FIG. 3A is configured so that a plurality of irregularly colored dark portions 16 having substantially the same dimensions as the pattern element 26 of the ceiling decorative board 20 do not come into contact with either the driver groove 12 or the peripheral edge 13. The pattern is formed so as to be scattered on the surface ground (light color portion 15).

  In the screw head 11 of FIG. 3B, a plurality of irregularly colored dark portions 16 having substantially the same dimensions as the pattern elements 26 of the ceiling decorative board 20 are not in contact with the driver groove 12 and are in contact with the peripheral edge 13. It is assumed that the pattern is formed.

  In the screw head 11 in FIG. 3C, one irregularly colored dark portion 16 having substantially the same size as the pattern element 26 of the ceiling decorative board 20 does not contact the peripheral edge 13 and is a part of the driver groove 12. It is assumed that the pattern is formed so as to overlap.

  In the screw head 11 in FIG. 3D, one dark colored portion 16 having an indefinite shape having substantially the same dimensions as the pattern element 26 of the ceiling decorative board 20 overlaps the entire driver groove 12 and touches the peripheral edge 13. It is assumed that the pattern is formed.

  According to the pattern (see FIGS. 3B and 3D) in which the dark color portion 16 is in contact with the peripheral edge 13, the circular peripheral edge 13 can be made less noticeable. Further, according to the pattern in which the dark color portion 16 overlaps the driver groove 12 (see FIGS. 3C and 3D), the driver groove 12 can be made inconspicuous, and unnaturalness due to the exposure of the cross hole is eliminated. be able to. Thus, according to these examples, the surface of the screw head 11 can be melted into the surface pattern 25 of the ceiling decorative board 20.

  Needless to say, the color arrangement configuration and the pattern on the surface of the screw head 11 are not limited to the four examples in FIG. 3, and various combinations of the light color portion 15 and the dark color portion 16 may be employed. .

DESCRIPTION OF SYMBOLS 10 Ceiling decorative board fixing screw 11 Screw head 12 Driver groove 13 Perimeter 15 Light color part 16 Dark color part 20 Ceiling decorative board 25 Surface pattern 26 Pattern element 27 Ground 30 Ceiling base

Claims (6)

It is a screw for fixing the ceiling decorative panel for fixing the ceiling decorative panel to the ceiling base,
The ceiling decorative board has a surface pattern formed by interspersing an irregular black-colored pattern element with a lighter background than the pattern element,
A screw groove is formed in the screw head, and the surface of the screw head is substantially the same as the pattern element, and a light-colored portion having a color that is substantially the same as the background color of the ceiling decorative board. A ceiling decorative board fixing screw, characterized in that it is composed of a dark color portion and a color scheme. In claim 1,
The ceiling decorative board fixing screw, wherein the dark portion is formed so as to contact a peripheral edge of the screw head. In claim 1 or 2,
The ceiling decorative board fixing screw, wherein the dark color portion is formed to overlap the driver groove. In any one of Claims 1-3,
The ceiling decorative board fixing screw, wherein the dark portion is formed so as to overlap the entire driver groove. In any one of Claims 1-4,
A screw for fixing a ceiling decorative board, wherein the screw head has a diameter of 5 to 15 mm, and the length of the driver groove is ½ or less of the diameter of the screw head. A ceiling decorative board fixing structure for fixing a ceiling decorative board to a ceiling base with a ceiling decorative board fixing screw,
The ceiling decorative board has a surface pattern formed by interspersing an irregular black-colored pattern element with a lighter background than the pattern element,
The ceiling decorative plate fixing screw has a driver groove formed in the screw head, and the surface of the screw head is lightly colored with the same color as the background color of the ceiling decorative plate. And a decorative structure for the ceiling decorative board, characterized in that it is composed of a dark color portion having substantially the same color as the pattern element.

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