JPS62248737A - Ceiling panel applied to curved surface - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A1.Object of the invention [Field of industrial application] The present invention relates to a non-combustible, sound-absorbing, flat, inorganic-filled 11 board formed mainly of an inorganic material and an inorganic binder. , a flat plate that is easy to bend and deform, especially suitable for construction on curved surfaces) 1 plate in 1! ? The porpose is to do.

(Conventional technology)? The main ingredients are inorganic fibers such as cotton, rock wool, and glass fiber, and inorganic binders such as gypsum, silicic acid, and cement, and if necessary, starch, phenolic resin, etc. ! An inorganic ceiling board formed into a flat plate by adding and mixing a monolithic binder and other modifiers is widely used to form a non-combustible and sound-absorbing flat ceiling. Due to its low flexibility, it is extremely difficult to curve it to form a curved ceiling surface.In the case of construction on such a curved surface, a large number of narrow strip-shaped plates of 11] are lined up. A curved surface is formed or a predetermined curved surface manufactured in advance is
Measures such as the use of special molded plates have been adopted.

[Problems to be Solved by the Invention] For conventional flat inorganic ceiling panels, rectangular roots with a thickness of 6-25 mm and a culm of 30 x 60 cm are generally used due to the characteristics of strength, ease of handling, etc. However, the radius of curvature that can be bent is 300.~2 even for a thin plate with a thickness of 61I1m.
50 cm, and if the ceiling board itself is bent with a radius of curvature smaller than that, there is a risk that the ceiling board itself will crack and break. The internal stress caused by the curvature concentrates on the fixed part of the needle 1 and may cause cracks in that part, requiring more fixings than in the case of flat construction. There are many problems in the construction of curved surfaces, and it is only rarely implemented in the case of forming gently curved surfaces.

On the other hand, in order to improve the decorativeness of the interior seating surface, the radius of curvature is 300ffll'i! It is necessary to form a steeply curved surface that is concave or convex to a degree! However, it is impossible to apply the conventional flat inorganic large lunar plate, and it is impossible to stop it! J: We have no choice but to deal with this by parallel construction of eel strip-shaped plates or by preparing specific curved plates in advance! There was no I.

However, such methods do not require complicated preparation processes or
There are problems such as the troublesome administration, and improvements have been desired.

[10 Structure of the Invention (Means for Solving the Problems) The present invention provides a flat plate having sufficient curvature and a strong strength that can withstand removal, which can solve the problems in forming a curved surface using an inorganic ceiling board. This is what happens when you get the first board.

That is, the present invention provides a surface or a large surface of a deck-shaped inorganic ceiling board, by recessing straight grooves on the flat surface (1. Otsuki temporary for curved surface construction, which is characterized by having a rough tl /li, tape-like paper cloth or other flexible reinforcing sheet affixed partially orthogonally to the full direction. be.

The above-mentioned person's seat [iI'i recessed on the front or back side of the board]
The linear groove is formed by cutting from one side of the moon plate to the other side, leaving a connecting part of 1 to 2+ am on the inside of the pond, and the middle of the cut is formed by cutting a gap of 1 to 2 mm. Depth with a rectangular or wedge-shaped cross section! There is i/+P. These kerfs are arranged at appropriate intervals according to the radius of curvature of the constructed curved surface.
The recesses are parallel to each other.

The flexible sheet affixed to the back of the ceiling board compensates for the reduction in strength of the ceiling board due to the recessed grooves, prevents damage during handling, and stably and easily prevents curved deformation. And,
For coarse cloth and am attachment, stretchable sheet material such as kraft paper is preferable, and this flexible reinforcing sheet has i! ! It is attached to the entire surface of the π plane of the ceiling board or to a part thereof perpendicular to the direction of the groove so that a square is formed.

[Effect]

Due to the above-described structure, the curved surface construction worker 1F board of the present invention has a small angle bend in the same direction at each slight connecting part of a plurality of parallel linear kerf positions, so that the entire surface of the ceiling board is concave to one side. It can be curved or convexly curved to adapt to the desired curved ceiling formation, and the flexible reinforcing sheet attached to the back side has the effect of stabilizing and facilitating the curve deformation operation without inhibiting the curve formation. .

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 are a plan view of blood loss in which a cut groove and a flexible reinforcing sheet are provided on the back side of an inorganic ceiling board in an example, and a sectional view taken along the arrow AAla of the figure.

The inorganic ceiling board 1 is a rectangular board with an rp of 30 cm and a length of 60 cm, and has four stripes 5. A plurality of raised stripes 6 are formed alternately to form a striped pattern.
The part of the board with a thickness of 11 o + m corresponding to the groove 5: (ii
Width 1.5mm, depth 101Il in the longitudinal direction of the plate from the 2nd side
Four rectangular and linear kerf grooves 3 are recessed in four horizontal parallel lines so as to divide the plate 1+J into five sections.

Two reinforcing sheets 4 made of paper tape are pasted on the back surface 2 with the cut grooves 3 spaced perpendicularly to the direction of the cut grooves. The paper hoop of the reinforcing sheet 4 is preferably kraft paper with fine wrinkles and high paper strength, but it can be replaced with other flexible film Dave or coarse cloth such as cheesecloth. It may be attached to the surface.

The construction state of the concave curve J3 and the convex curved ceiling It by this ceiling board will be explained with reference to FIGS. 3 and 4 showing cross sections of the main parts thereof.

6 Boards, plywood, etc. are attached to the top frame 1 using nails 12.
The ceiling base 11 formed with a fixed value of 0 has a curvature of half PIR.
It forms a concave or convex curved surface according to the locus obtained by translating the straight line a (generating line) along the curve.

The large moon plate 1 is pressed along the curved surface of the large moon plate 1 by aligning its kerf 3 direction with the 10 line direction of the curved surface of the large moon base material 11 (direction perpendicular to the plane of the figure), and pressing the back side 2 against the top material 11. Then bend it and go up to the nail 17 and fix it.

The kerf 3 of the lunar plate 1 is bent at the connecting portion 7 so that the kerf widens in the case of a concave curve as shown in Fig. 3, and narrows in the case of a convex curve as shown in Fig. 4. Ru.

The bending angle of the connecting portion 7 increases as the radius of curvature of the curved surface decreases, but if the angle exceeds 15°, the deformation pressing force must be increased and cracks may occur in the connecting portion 7. Therefore, it is preferable to apply the method to forming a curved surface with a bending angle of 10° or less, and in the case of the ceiling board 1 of this embodiment, it is appropriate to construct a curved surface with a radius of curvature of 40 CIl1 or more.

Note that it is possible to form a curved surface with a smaller radius of curvature by increasing the number of kerfs 3 provided on the ceiling plate 1;
If the distance between the two is less than 3 cm, the strength of the board itself will decrease dramatically, and it will be difficult to maintain a strong RTL that can withstand handling even when pasting reinforcing sheets.
(The diameter of the knife is 30cm or more.

Joints 15.1 on the top and bottom of the large Jt board 1 constructed with a curved surface
To install 6, connect 10 other large moon plates 1' and 1'', and install 6 other ceiling #1 temporary in the longitudinal direction.) Do the same construction as above to make the ceiling. Complete the surface.

Figures 5 and 6 are back plan views of other embodiments in which straight grooves are formed on the surface of the inorganic ceiling board 1 and a flexible reinforcing sheet is attached to the surface, and [ There is a sectional view taken along the line 311.

The inorganic ceiling board 1 has four stripes 5' in the longitudinal direction on its surface.

A striped pattern in which the protrusions 6' are arranged in alternating Hz rows is formed, and a blowing groove 3' that is perpendicular to the striped pattern and connects a straight line from 1 to 2+n on the back surface. The recess is deep enough to leave a portion 7', and two reinforcing sheets 4.4 are adhered to the longitudinal direction of the back surface.

It is preferable that the wedge-shaped cut angle 1α of the cut groove 3' is 10 degrees or less for the reason explained in the previous embodiment, and the cut groove interval is also such that when the ceiling plate 1 is concavely curved with a predetermined radius of curvature, It is determined by the condition that the opposing wall surfaces of the cut groove 3' are in close contact and the cut [1] is stopped.

In this embodiment, the wedge-shaped cutting angle of the kerf 3' was 6 degrees, the longitudinal direction of the top plate 1 was 10 minutes X'lJ, and the groove interval 1'J was 6 cm.

When this ceiling board 1 was fixed to a concave ceiling base 11 with a radius of curvature R of 60 cm as shown in the sectional view of the main part of the construction part in Fig. 7 in the same manner as described above, it was fixed by crimping and concavely. The kerf 3' was completely tightly closed, and one side had a good striped pattern concave curved surface with almost no damage to the appearance.

C. Effects of the Invention As explained above, according to the present invention, it is possible to give a flat inorganic ceiling panel good bending deformability while maintaining strength to withstand handling. This method eliminates the need for complicated preparation processes and multiple construction steps for curved ceiling construction using curved ceiling panels or special curved ceiling panels.
A good curved ceiling can be obtained through efficient construction.

[Brief explanation of drawings]

The drawings show an embodiment of the ceiling board for curved surface construction according to the present invention, and FIG. 1 is a back plan view, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIGS. 3 and 4 are views of the ceiling. 5 is a cross-sectional view of the main parts showing a concave ceiling construction state and a convex curved ceiling construction state using boards, FIG. 5 is a back plan view of another embodiment, and FIG. A cross-sectional view, FIG. 7 is a cross-sectional view of a main part showing a concave ceiling construction state using the ceiling board. 1... Inorganic ceiling board 2... Back surface 3... Cut groove 4
...Reinforcement sheet 5...Concave strip 6...Convex strip 7...
・Connection part

Claims (1)

[Claims] A plurality of straight grooves are recessed in parallel at appropriate intervals on the front or back surface of a flat inorganic ceiling board, and coarse grooves are formed on the entire back surface or in parts perpendicular to the direction of the grooves. A ceiling board for construction on curved surfaces, characterized by having a flexible reinforcing sheet such as cloth or tape-like paper cloth attached.