JPH0352325Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a curved ceiling board that is concavely curved and attached to a ceiling base such as a circular ceiling.

[Background Art] Ceiling panels are sometimes attached to circular ceilings such as entrances. As shown in FIG. 5, this curved ceiling board A is formed by providing a plurality of parallel grooves 2 on the back side of a ceiling board 1 made of rock wool or the like.
By widening the gap between each groove 2, the surface side of the ceiling plate 1 is deformed so as to be curved concavely.
When installing on the ceiling base 4, as shown in Fig. 6, the curved ceiling board A is pressed against the lower surface of the concavely curved ceiling base 4, and the curved ceiling board A is curved and adhered with adhesive. Alternatively, a fixing tool such as a tassel is driven into the ceiling base 4 from the underside of the curved ceiling board A to fix it.
However, when this curved ceiling board A is installed on the ceiling base 4, cracks tend to occur at the concave grooves 2, and when the curved ceiling board A is transported to the construction site or handled, the dents in the curved ceiling board A are likely to occur. This had the disadvantage that cracks were likely to occur in the groove 2 portion.

[Purpose of the invention] The present invention was made in view of the above points, and the purpose is to provide a curved ceiling board that can prevent cracking during construction, transportation, etc. It is.

[Disclosure of the invention] That is, the curved ceiling board of the present invention has a plurality of parallel grooves 2 on the back side of the ceiling plate 1, and the gaps between the grooves 2 are widened, thereby making the ceiling plate 1 concave on the front side. A reinforcing tool 8 is formed by providing a plurality of locking protrusions 10 extending in the longitudinal direction on the inner surface of an elongated substrate 9 which is formed to be bendable and concavely curved. The above-mentioned ceiling plate 1 is disposed on the inner surface of the reinforcing device 8, and the ceiling plate 1 is curved concavely along the concave curved surface of the reinforcing device 8, and a locking protrusion 10 is inserted into the ceiling plate 1. Reinforcing tool 8 on the back side of plate 1
By attaching and reinforcing the ceiling board 1, the above object is achieved by preventing the curved ceiling board A from cracking at the groove 2 during transportation or construction.

The present invention will be described in detail below based on illustrated embodiments. As shown in FIGS. 1 to 3, the ceiling board 1 is formed of a fiberboard such as a rock wool board, and the back side of the ceiling board 1 has a plurality of parallel grooves 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 5, 4, 5, 4, 5, 4, 5, 4, 4, 5, 4, 5, 4, 5 parallel grooves are formed on the back side of the ceiling plate 1.
...is recessed over the entire length. The ceiling plate 1 can be curved concavely toward the surface side by widening the gap between the grooves 2.
As shown in FIG. 4, the board 9 is formed of a metal plate or the like in a concave curve, and a plurality of locking protrusions 10 formed by cutting and bending are formed on the inner surface of the board 9 in the longitudinal direction of the board 9. has been done. The locking protrusion 10 is formed in a triangular shape, and the tip of the locking protrusion 10 is sharply formed. Reinforcement device 8 formed in this way
The ceiling plate 1 is arranged along the concave curved surface of the reinforcing tool 8 on the inner surface of the ceiling plate 1, and as shown in FIG. Piece 10 is inserted. This locking protrusion 10 is inserted into the ceiling plate 1 between the grooves 2.

Therefore, the curved ceiling board A having the above structure is manufactured in a factory and transported to the construction site in a concavely curved state, and at that time, a reinforcing tool 8 is attached to the back side of the ceiling board 1 to provide reinforcement This prevents cracking at the groove 2 portion. When attaching this curved ceiling board 1 to a concavely curved ceiling base 4 such as an entrance, the curved ceiling board A may be placed on the lower surface of the ceiling base 4 and an adhesive may be used, or the curved ceiling board A The curved ceiling board A is fixed to the ceiling base 4 by driving a fixing tool such as a tassel into the ceiling base 4 from the lower surface.

[Effects of the invention] As described above, the present invention provides a plurality of parallel grooves on the back side of the ceiling board, and by widening the gap between the grooves, the ceiling board can be bent so that the front side is concavely curved. A ceiling board was placed on the inner surface of the reinforcing tool, the ceiling board was curved concavely along the concave curved surface of the reinforcing tool, and a locking protrusion was inserted into the ceiling board. It is possible to maintain the shape of the ceiling board in a concave curved state, and the curved ceiling board can be attached to the ceiling base as it is, making it easy to install. The board will not break, and the curved ceiling board will not be damaged during construction or transportation.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a curved ceiling board according to an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is an enlarged sectional view of the main parts of the same, and Fig. 4 a, b, and c are reinforcements of the same. A front view, a plan view, and a front view of the reinforcing device in a curved state, FIG. 5 is a perspective view of a conventional curved ceiling panel, and FIG. 6 is a schematic explanatory diagram showing the construction state of the same curved ceiling panel as above. It is. 1 is a ceiling board, 2 is a groove, 3 is a reinforcing tool, 9 is a substrate, 10 is a locking protrusion, and A is a curved ceiling board.

Claims (1)

[Scope of utility model registration request] By providing a plurality of parallel grooves on the back side of the ceiling plate and widening the gap between the grooves, the ceiling plate can be bent so that the front side is concavely curved. A reinforcing tool is formed by protruding a plurality of locking protrusions from the inner surface in the longitudinal direction, and the above-mentioned ceiling plate is disposed on the inner surface of the reinforcing tool, and the ceiling plate is arranged along the concave curved surface of the reinforcing tool. A curved ceiling board made of a concave curve and a locking protrusion inserted into the ceiling board.