JP2844426B2 - Ceiling structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling structure, and more particularly to a ceiling structure having a sound absorbing property.

[0002]

2. Description of the Related Art FIG.
There are the following. This ceiling structure, public hall, hall,
The present invention is applied to a building having a relatively high ceiling, such as a gymnasium, a pool, and a meeting hall.

[0003] This ceiling structure is composed of a ceiling slab 31 and an insert 40 attached to the ceiling slab 31.
2 is hung, and a hanger 35 is held by two nuts 33 and 34 at the tip of the hanging bolt 32.
Attach the four-sided frame main grid 36 to the tip of FIG.
As shown in the figure, a ceiling frame is provided in a grid shape with a main bar 37 and a cross bar 38, and a square plate-shaped heat insulating material 39 made of glass wool is arranged in each frame of the grid.

[0004]

According to the above-mentioned conventional ceiling structure, while having a certain heat insulating effect,
Although the glass wool has a sound absorbing effect, it cannot sufficiently absorb the reverberation sounds of pools, gymnasiums and the like.

[0005] Further, as shown in FIG. 5, related equipment such as an air-conditioning duct 45 and a lighting device is disposed between the ceiling and the ceiling slab, and is generated from a disinfectant in the pool. Corrosive gas such as chlorine gas enters under the ceiling,
There is a problem that the related equipment is corroded and the life of the related equipment is shortened.

Accordingly, an object of the present invention is to provide a ceiling structure capable of sufficiently absorbing sound in a building and preventing corrosive gas from entering the space above the ceiling.

[0007]

In the present invention, the first means for solving the above-mentioned problems is, as shown in FIG. 1, suspended by hanging bolts 2 suspended from a ceiling slab 1, An upper ceiling 5 in which a heat insulating material 4 is laid between ceiling frame members 3 arranged in a lattice, and a lower ceiling which is suspended from the frame member 3 of the first ceiling via suspension bolts 6 and assembled in a lattice. A lower ceiling 9 provided with a porous sound absorbing material 8 between frame members 7, and an air space 1 between the upper ceiling 5 and the lower ceiling 9.
It is a ceiling structure with 0 interposed.

A second means of the present invention is a ceiling structure in which the lower ceiling 9 has a curved surface with respect to the upper ceiling 5.

[0009]

According to the present invention, the porous sound absorbing material 8 is disposed on the lower ceiling, and an air layer is provided between the lower ceiling and the upper ceiling. Therefore, the sound waves in the room propagate through the pores of the porous sound absorbing plate, and a part of the sound energy is consumed as heat energy by friction with the peripheral wall, viscous resistance, and vibration of the material. This sound absorption characteristic is particularly good in a high sound range.

In addition, the air layer acts as a resonator, and the air vibrates violently near the resonance frequency to absorb sound energy as frictional heat at that time. This sound absorbing property is good at medium and low temperatures, but can be adjusted by changing the thickness of the air layer, and it is generally advantageous to make the air layer large. Therefore, the upper and lower ceilings and the air layer absorb sound well in low, medium and high frequencies, and effectively absorb the sound in the building.

Also, by changing the length of the suspension bolts on the lower ceiling, the angle of the lower sound absorbing plate can be changed, thereby enhancing the indoor sound absorbing effect and realizing ceilings of various shapes. it can.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a ceiling structure according to the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a ceiling structure according to the present invention.

In this embodiment, as shown in FIG. 1, the ceiling structure is suspended between four-sided frame main grids 3, which are ceiling frame members that are suspended by hanging bolts 2 hanging from a ceiling slab 1 and assembled in a lattice shape. A porous material is provided between an upper ceiling 5 on which a heat insulating material 4 is laid and a T-bar 7 as a lower ceiling frame material which is suspended from the frame material 3 of the first ceiling via suspension bolts 6 and assembled in a lattice shape. It comprises a lower ceiling 9 provided with a sound absorbing material 8, and an air layer 10 is interposed between the upper ceiling 5 and the lower ceiling 9.

The upper ceiling 5 has a hanger 12 attached to the tip of a suspension bolt 2 suspended from an insert 11 embedded in the ceiling slab 1 with two nuts 13 and 14, and a four-sided frame main grid 3 is provided on the hanger 12. The ceiling frame is formed by the main bar and the cross bar, and the heat insulating material 4 made of glass wool is arranged via the sealant 16.

On the lower ceiling 9, a suspension bolt 6 is attached to a hole formed in the four-sided frame main grid 3 of the upper ceiling with two nuts 16 and 17, and two hangers 20 are provided below the suspension bolt 6. The T-bar 7 having a T-shaped cross section is attached to the hanger 20. A cross bar 22 is attached to the T-bar 21 in the orthogonal direction to form a lattice, and an aluminum sintered plate 8 is attached as a porous sound absorbing material.

Therefore, according to this embodiment, the sound in the building is favorably absorbed by the upper and lower ceilings and the air layer over low, medium and high sounds. Also, by changing the length of the suspension bolts on the lower ceiling, the angle of the lower sound absorbing plate can be changed, thereby enhancing the indoor sound absorbing effect and realizing ceilings of various shapes.

Further, since glass wool is used as the heat insulating material, the heat insulating effect is improved, and the sound is absorbed by this glass wool, and the sound absorbing effect is further improved. The sintered aluminum plate is used as the porous sound-absorbing material. Since the appearance of the surface of the aluminum sintered plate is good, it is not necessary to perform a finishing treatment particularly on the indoor side of the ceiling.

Further, since the ceiling is a double ceiling consisting of a lower ceiling and an upper ceiling, corrosion due to equipment-related corrosive gas can be prevented, internal dew condensation can be prevented, and equipment-related life can be extended.

Further, since the ceiling structure is doubled, the heat insulating effect is good, and the cost for heating and cooling can be reduced.

FIG. 2 shows a second embodiment of the ceiling structure according to the present invention. In this embodiment, an aluminum sintered plate is adhered to the T bar from below the T bar with an epoxy-based adhesive and fixed with rivets 25. This embodiment is the same as the structure according to the first embodiment except for the method of mounting the aluminum sintered plate described above. .

According to the present embodiment, in addition to the same operation and effect as the first embodiment, the ceiling frame material is covered with the aluminum sintered plate, so that the ceiling frame material cannot be seen from the room and the appearance is good. Become.

[0022]

As described above, according to the present invention, low, medium, and high sounds are favorably absorbed by the upper and lower ceilings and the air layer, and the sound in the building is effectively absorbed. Also, by changing the length of the suspension bolts on the lower ceiling, the angle of the lower sound absorbing plate can be changed, thereby enhancing the indoor sound absorbing effect and realizing ceilings of various shapes.

Further, since the ceiling is a double ceiling of a lower ceiling and an upper ceiling, corrosion due to equipment-related corrosive gas can be prevented, internal dew condensation can be prevented, and equipment-related life can be extended. In addition, the heat insulation effect is improved, and the cost of heating and cooling can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a ceiling showing a first embodiment of a ceiling structure according to the present invention.

FIG. 2 is a sectional view of a ceiling showing a second embodiment of the ceiling structure according to the present invention.

FIG. 3 is a sectional view of a ceiling showing a conventional ceiling structure.

4 is a plan view of the ceiling showing the ceiling structure shown in FIG.

FIG. 5 is a sectional view of a ceiling showing an arrangement of ducts in a conventional ceiling structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling slab 2 Hanging bolt 3 Ceiling frame material 4 Insulation material 5 Upper ceiling 6 Hanging bolt 7 Lower ceiling frame material 8 Porous sound absorbing material 9 Lower ceiling

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁶ , DB name) E04B 9/00 E04B 1/76 E04B 1/82 E04H 3/14

Claims (2)

(57) [Claims] 1. An upper ceiling (5) suspended by hanging bolts (2) hanging from a ceiling slab (1) and having a heat insulating material (4) laid between ceiling frame members (3) assembled in a lattice shape. ) And the lower ceiling frame material (7) suspended from the first ceiling frame material (3) via a height-adjustable suspension bolt (6) and assembled in a grid pattern. A ceiling structure comprising a lower ceiling (9) provided with a perforated sound absorbing material (8), wherein an air layer (10) is interposed between the upper ceiling (5) and the lower ceiling (9). 2. The ceiling structure according to claim 1, wherein the lower ceiling (9) forms a curved surface with respect to the upper ceiling (5).